Disclosure of Invention
The invention provides an electric batch with a pressure torsion sensor, which solves the problem that the electric batch in the prior art has insufficient structural design, and the torque and the down-pressure data are monitored and fed back in real time.
In order to solve the technical problems, the technical scheme of the invention is that the electric batch with the pressure torsion sensor comprises:
A housing;
The rotating motor is arranged in the shell, a rotating part is arranged at the bottom end of the rotating motor, and a driving shaft is arranged at the rotating part;
a main shaft arranged in the shell, one end of the main shaft is connected with the driving shaft, the other end is provided with a screwdriver head, and
The first sensor body is sleeved on the main shaft outer ring, the top end of the first sensor body is connected with the rotating part, the outer side of the bottom end of the first sensor body is connected with the shell, a first strain device is arranged in the middle of the first sensor body and used for collecting radial torsion data, and
The second sensor body is of a ring structure, the second sensor body is sleeved on the outer ring of the main shaft, the second sensor body is connected with the shell, the second sensor body is connected with the main shaft, the second sensor is provided with a second strain device, and the second strain device is used for collecting pushing-down and radial torsion data.
In the invention, the electric batch with the pressure torsion sensor further comprises:
the motor flange is sleeved on the outer ring of the driving shaft, and the top end of the motor flange is connected with the rotating part;
The first sensor flange is connected with the motor flange, the first sensor flange inner ring is clamped with the first sensor body outer ring, and
And the anti-collision isolation ring is positioned between the shell and the first sensor flange, and is sleeved on the outer ring of the first sensor flange.
In the invention, the electric batch with the pressure torsion sensor further comprises:
the elastic piece is arranged between the driving shaft and the main shaft, and the elastic piece elastically extrudes the main shaft away from the driving shaft.
In the invention, a first limiting piece is arranged on the outer side of the main shaft, and the electric batch with the pressure torsion sensor further comprises:
A second sensor flange, the top end of the inner ring of the second sensor flange is connected with the bottom end of the first sensor body, the outer side of the bottom end of the second sensor is connected with the shell, the second sensor body is positioned in the second sensor flange, and
The plane bearing is sleeved on the outer side of the main shaft, and the plane bearing is arranged between the first limiting piece and the second sensor body.
In the present invention, the first sensor body includes:
The first connecting part is positioned at the top end of the first sensor body and is connected with the first sensor flange;
a second connecting part positioned at the bottom end of the first sensor body and connected with a second sensor flange, and
The deformation part is positioned in the middle of the first sensor body, the section diameter of the deformation part is smaller than that of the first connecting part and that of the second connecting part, and the outer side of the deformation part is connected with the first strain device.
In the invention, the electric batch with the pressure torsion sensor further comprises a second limiting piece, wherein the second limiting piece is arranged in the second sensor flange, the second limiting piece is positioned between the first sensor body and the second sensor body, and the second limiting piece limits the position of the second sensor body.
In the present invention, the housing includes:
a main housing having a hollow cylindrical structure, an opening provided at a bottom end of the main housing, the rotary motor being located in the main housing, and
A front cover under the main housing for closing the opening, the second sensor body connected to the front cover, and
And the connecting piece is used for connecting the main shell with the front cover.
In the invention, the top end of the main shaft is provided with the slot, the driving shaft is inserted into the slot, and the elastic piece is arranged in the slot.
In the invention, the cross section polygonal structure of the outer ring of the first connecting part is matched with the cross section structure of the outer ring at the top end of the first sensor flange.
In the invention, the electric batch with the pressure torsion sensor further comprises:
A deep groove ball bearing sleeved on the main shaft, an inner ring of the deep groove ball bearing connected with the bottom end of the first limiting piece, an outer side of the deep groove ball bearing connected with the second sensor flange, and
And the clamping ring is arranged in the second sensor flange and is positioned at the bottom end of the outer ring of the deep groove ball bearing, and the clamping ring is used for limiting the position of the deep groove ball bearing.
In the invention, the electric batch with the pressure torsion sensor further comprises:
a mounting plate in flanged connection with the second sensor, and
And the static brush is arranged on the mounting plate and positioned at the side edge of the main shaft and is used for eliminating static electricity of the main shaft.
Compared with the prior art, the electric batch of the torque sensor with pressure has the beneficial effects that the electric batch is provided with the shell, the rotating motor, the main shaft and other parts, normal use of the electric batch can be met, and the electric batch of the torque sensor with pressure can collect radial torsion data and downward pressure data simultaneously by integrating the first sensor body and the second sensor body. The comprehensive data acquisition capability enables the electric batch to control torque and vertical acting force more accurately in the operation process, so that the assembly accuracy and controllability are improved. The first sensor body and the second sensor body are reasonable in design, are respectively sleeved on the outer ring of the main shaft and are connected with the shell. The structural design ensures the stability and durability of the sensor, avoids the direct connection of the sensor with a main shaft or a rotating motor, and reduces the risk of damage of the sensor. Compared with the traditional electric batch, the electric batch with the torque sensor has the advantage that the function is remarkably improved. In addition to the basic rotation function, torque and hold-down data can be monitored and fed back in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present invention.
Fig. 1 is a perspective view showing the overall structure of a torque sensor with pressure according to a preferred embodiment of the present invention.
Fig. 2 is a cross-sectional view of the whole structure of the electric batch with the torque sensor according to the preferred embodiment of the invention.
Fig. 3 is a schematic diagram of a connection structure between the first sensor body and the main shaft and between the second sensor body and the main shaft according to a preferred embodiment of the present invention.
Fig. 4 is an exploded view of the overall structure of the torque sensor with pressure in accordance with the preferred embodiment of the present invention.
Reference numerals 11, housing, 111, main casing, 112, front cover, 113, connector, 12, rotary motor, 121, rotary part, 122, drive shaft, 123, motor flange, 13, main shaft, 131, first limit piece, 132, slot, 14, first sensor body, 141, first connector, 142, deformation part, 143, second connector, 15, second sensor body, 16, batch head, 17, first sensor flange, 171, first receiving groove, 172, first fixing groove, 18, anti-collision isolation ring, 19, elastic part, 20, second sensor flange, 201, second receiving groove, 202, first through hole, 203, second fixing groove, 21, plane bearing, 22, second limit piece, 23, deep groove ball bearing, 24, snap ring, 25, mounting plate, 26, electrostatic brush.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms of directions used in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present invention only with reference to the orientation of the drawings, and are not intended to limit the present invention.
The words "first," "second," and the like in the terminology of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The following is a preferred embodiment of the electric batch with torque sensor, which can solve the above technical problems.
Referring to fig. 1,2 and 3, fig. 1 is a perspective view showing an overall structure of a torsion sensor with pressure according to a preferred embodiment of the present invention, and fig. 2 is a sectional view showing an overall structure of a torsion sensor with pressure according to a preferred embodiment of the present invention.
In the drawings, like structural elements are denoted by like reference numerals.
The invention provides a pressure torsion sensor electric batch which comprises a shell 11, a rotating motor 12, a main shaft 13, a first sensor body 14 and a second sensor body 15, wherein the rotating motor 12 is arranged in the shell 11, a rotating part 121 is arranged at the bottom end of the rotating motor 12, a driving shaft 122 is arranged at the rotating part 121, the main shaft 13 is arranged in the shell 11, one end of the main shaft 13 is connected with the driving shaft 122, the other end of the main shaft 13 is provided with a batch head 16, the batch head 16 penetrates through the bottom end of the shell 11 and extends, the batch head 16 is used for being in contact with a screw, the first sensor body 14 is of a hollow cylindrical structure, the first sensor body 14 is sleeved on the outer ring of the main shaft 13, the top end of the first sensor body 14 is connected with the rotating part 121, the outer side of the bottom end of the first sensor body 14 is connected with the shell 11, a first strain device is arranged in the middle of the first sensor body 14, the first strain device is used for collecting radial torsion data, the second sensor body 15 is of a circular ring structure, the second sensor body 15 is sleeved on the outer ring of the main shaft 13, the second sensor body 15 is connected with the shell 11, and the second sensor body 15 is connected with the second strain device is used for collecting the second strain device.
The electric screwdriver is provided with the shell 11, the rotating motor 12, the main shaft 13 and other key components, can meet the normal use requirement of the electric screwdriver, and respectively collects radial torsion and downward pressure data through two sensors (the first sensor body 14 and the second sensor body 15), so that the control precision of the electric screwdriver in screwing operation and the accuracy of torque feedback are improved. The first sensor body 14 is sleeved on the outer ring of the main shaft 13, the rotary motor 12 and the main shaft 13 are connected and driven in the first sensor body 14, under the condition that the main shaft 13 drives the screwdriver bit 16 to stably rotate, the top end of the first sensor body 14 is connected with the rotating part 121, the bottom end of the first sensor body is connected with the shell 11 and is in tight structural connection, torsion is generated between the upper part and the lower part of the first sensor body 14 so as to facilitate detection, and the first sensor body 14 can effectively transmit torque force to avoid energy loss and sensor displacement. The second sensor body 15 is sleeved on the outer ring of the main shaft 13, and is firmly connected with the shell 11 and the main shaft 13. In the screwing operation, when the screwdriver bit 16 contacts with the screw and applies pressure, the main shaft 13 receives a reaction force from the screw, the reaction force comprises downward pressure data in the vertical direction, and a second strain device on the second sensor body 15 can detect the downward pressure data, so that the error starting of the electric screwdriver when the screw is not screwed is avoided, and the safety of the electric screwdriver in the use process is improved.
The connection structure of the first sensor body 14 in the present embodiment is explained as follows:
Referring to fig. 2 and 3, in this embodiment, the electric screwdriver with the torque sensor further includes a motor flange 123, a first sensor flange 17 and an anti-collision isolation ring 18, the motor flange 123 is sleeved on an outer ring of the driving shaft 122, a top end of the motor flange 123 is connected with the rotating portion 121, the first sensor flange 17 is connected with the motor flange 123, an inner ring of the first sensor flange 17 is clamped with an outer ring of the first sensor body 14, the anti-collision isolation ring 18 is located between the housing 11 and the first sensor flange 17, and the anti-collision isolation ring 18 is sleeved on an outer ring of the first sensor flange 17. The design of the motor flange 123, the first sensor flange 17 and the anti-collision isolation ring 18 enhances the stability and safety of the internal structure of the electric batch. The anti-collision spacer 18 effectively prevents direct collision between the housing 11 and the first sensor flange 17, improving durability of the product. When the first sensor body 14 receives horizontal force, the force acts on the first sensor flange 17 through the anti-collision isolation ring 18, so that the deformation plane of the first sensor body 14 can be protected from being affected by the horizontal force, and the accuracy of the detection of the first sensor body 14 is ensured. The first sensor flange 17 is used in combination with a crash barrier 18 to fill the gap between the first sensor flange 17 and the housing 11. When the electric batch is toppled over, the first sensor body 14 cannot collide with the shell 11. This structural design serves to isolate the torsion forces between the housing 11 and the first sensor body 14.
In this embodiment, a first receiving groove 171 is provided on the outer side of the first sensor flange 17, and the crash barrier 18 is fitted into the first receiving groove 171. The design of the first receiving groove 171 enables the anti-collision spacer 18 to be more firmly embedded outside the first sensor flange 17, further enhancing the stability of the structure.
In this embodiment, the cross section of the outer ring at the top end of the first sensor body 14 is of a polygonal structure, and the cross section of the inner ring of the first sensor flange 17 is matched with the cross section of the outer ring at the top end of the first sensor body 14. The design of the polygonal structure increases the contact area and friction between the first sensor flange 17 and the connecting part, improving the stability of the connection.
Referring to fig. 3 and 4, the first sensor body 14 in this embodiment includes a first connection portion 141, a second connection portion 143, and a deformation portion 142, where the first connection portion 141 is located at a top end of the first sensor body 14 and is connected to the first sensor flange 17, the second connection portion 143 is located at a bottom end of the first sensor body 14 and is connected to the housing 11, the deformation portion 142 is located in a middle portion of the sensor body, a cross-sectional diameter of the deformation portion 142 is smaller than a cross-sectional diameter of the first connection portion 141 and a cross-sectional diameter of the second connection portion 143, and an outer side of the deformation portion 142 is connected to the first strain device. The upper part of the first sensor body 14 is connected with the motor flange 123 through the first sensor flange 17, the lower part of the first sensor body 14 is connected with the housing 11, and the first strain device installed at the deformation part 142 can detect the torque difference between the upper part and the lower part of the first sensor body 14.
The connection of the first sensor body 14 to the first sensor flange 17 will be explained:
referring to fig. 2 and 3, the first sensor flange 17 includes a first fixing portion and a second fixing portion, the top end of the first fixing portion is connected with the motor flange 123 through a screw, a first fixing groove 172 is provided in the first fixing portion, the first fixing groove 172 is inserted into the first connecting portion 141, the first fixing portion is connected with the first fixing groove 172 in a clamping manner, the first connecting portion 141 is of a polygonal structure, and the inner wall structure of the first fixing groove 172 is matched with the structure of the first connecting portion 141.
The second fixed part is located first fixed part bottom, and the second fixed part downwardly extending. In this embodiment, the second fixing portion is located at the outer side of the deformation portion 142, and a space for installing the first strain device is formed between the inner side of the second fixing portion and the deformation portion 142, so as to improve the compactness of the electric batch structure.
The connection structure of the spindle 13 and the rotary motor 12 in this embodiment is explained as follows:
referring to fig. 3 and 4, the electric screwdriver with the torque sensor in this embodiment further includes an elastic member 19, where the elastic member 19 is disposed between the driving shaft 122 and the main shaft 13, and the elastic member 19 elastically presses the main shaft 13 away from the driving shaft 122, so that the connection between the main shaft 13 and the screwdriver head 16 driven by the main shaft 13 and the screw is tighter in the use process of the electric screwdriver.
Further, the top end of the main shaft 13 is provided with a slot 132, the driving shaft 122 is inserted into the slot 132, the elastic piece 19 is arranged in the slot 132, the structural design is compact, and the installation and the use are convenient.
In this embodiment, the cross section of the slot 132 may be a polygonal structure such as triangle, quadrangle, etc., and the cross section of the driving shaft 122 is matched with the cross section of the slot 132, so that the stability of the connection between the main shaft 13 and the driving shaft 122 is improved, and the abrasion error between the main shaft 13 and the driving shaft 122 is avoided.
The cross section of the main shaft 13 in this embodiment is circular, the main shaft 13 is provided with a positioning protrusion, the positioning protrusion is located in the slot 132, a positioning groove is formed on the side edge of the driving shaft 122, the positioning protrusion is clamped with the positioning groove, and the connection stability of the main shaft 13 and the rotating motor 12 is improved.
The connection structure of the second sensor in this embodiment is explained as follows:
Referring to fig. 2 and 3, in this embodiment, a first limiting piece 131 is disposed on the outer side of the spindle 13, and the electric batch with torque sensor further includes a second sensor flange 20 and a plane bearing 21. The top end of the inner ring of the second sensor flange 20 is connected with the bottom end of the first sensor body 14, the outer side of the bottom end of the second sensor is connected with the shell 11, the second sensor body 15 is positioned in the second sensor flange 20, the plane bearing 21 is sleeved on the outer side of the main shaft 13, and the plane bearing 21 is arranged between the first limiting piece 131 and the second sensor body 15. Through the design of first spacing piece 131, second sensor flange 20 and plain bearing 21, carried out effectual support and location to second sensor body 15, improved its accuracy and the stability of gathering data.
Referring to fig. 4, in this embodiment, the inner ring at the top end of the second sensor flange 20 is connected to the bottom end of the first sensor body 14, and the outer ring at the top end of the second sensor flange 20 is connected to the housing 11. And the cross section of the outer ring at the bottom end of the first sensor flange 17 is of a polygonal structure, and the cross section of the inner ring of the second sensor flange 20 is matched with the cross section of the outer ring at the bottom end of the first sensor flange 17. That is, the second connecting portion 143 is of a polygonal structure, the top end of the second sensor flange 20 is provided with a second fixing groove 203 for clamping the second connecting portion 143, the structure of the second fixing groove 203 is matched with that of the second connecting portion 143, the connection stability between the second sensor flange 20 and the housing 11 is enhanced due to the polygonal structure, and the overall structural strength of the product is improved.
Further, the sensor electric batch with the torque and pressure further comprises a second limiting piece 22, the second limiting piece 22 is arranged in the second sensor flange 20, the second limiting piece 22 is located between the first sensor body 14 and the second sensor body 15, and the second limiting piece 22 limits the position of the second sensor body 15. The second limiting piece 22 further limits the position of the second sensor body 15, so that the second sensor body 15 is prevented from moving upwards to press the first sensor body 14, and accuracy and stability of data acquisition are improved.
Referring to fig. 3 and 4, in this embodiment, the electric screwdriver with the torque sensor further includes a deep groove ball bearing 23 and a snap ring 24, the deep groove ball bearing 23 is sleeved on the spindle 13, an inner ring of the deep groove ball bearing 23 is connected with a bottom end of the first limiting piece 131, an outer side of the deep groove ball bearing 23 is connected with the second sensor flange 20, the snap ring 24 is disposed in the second sensor flange 20, the snap ring 24 is located at a bottom end of an outer ring of the deep groove ball bearing 23, and the snap ring 24 is used for limiting a position of the deep groove ball bearing 23. The design of the deep groove ball bearing 23 and the clamping ring 24 improves the connection stability between the main shaft 13 and the second sensor flange 20, reduces the shaking and friction of the main shaft 13 in the rotating process, and improves the service life of the electric batch.
In this embodiment, the electric batch with the torque sensor further includes a mounting plate 25 and an electrostatic brush 26, wherein the mounting plate 25 is connected with the second sensor flange 20, the electrostatic brush 26 is disposed on the mounting plate 25, the electrostatic brush 26 is located at a side of the spindle 13, and the electrostatic brush 26 is used for eliminating static electricity of the spindle 13. The static brush 26 is designed to effectively eliminate static electricity generated in the rotation process of the main shaft 13, and potential safety hazards and performance degradation caused by static electricity accumulation are avoided.
Further, the mounting plate 25 is connected to the outer side of the second sensor flange 20, the second sensor flange 20 is provided with a second accommodating groove 201 and a first through hole 202, the second accommodating groove 201 is communicated with the first through hole 202, wherein the mounting plate 25 is located in the second accommodating groove 201, the outer side of the mounting plate 25 is matched with the outer side structure of the second sensor flange 20, and the electrostatic brush 26 penetrates through the first through hole 202 and extends towards the inner side of the second sensor flange 20. The design of the second accommodating groove 201 and the first through hole 202 enables the mounting plate 25 and the electrostatic brush 26 to be more firmly mounted on the second sensor flange 20, and does not occupy additional use space of the electric batch, so that the overall structural safety and compactness of the product are improved.
The structure of the housing 11 in this embodiment is explained as follows:
Referring to fig. 1 and 2, in the present embodiment, the housing 11 includes a main housing 111, a front cover 112 and a connecting member 113, the main housing 111 is of a hollow cylindrical structure, an opening is provided at a bottom end of the main housing 111, the rotary motor 12 is located in the main housing 111, the front cover 112 is located below the main housing 111, the front cover 112 is used for closing the opening, the second sensor body 15 is connected to the front cover 112, and the connecting member 113 connects the main housing 111 to the front cover 112. The design of the housing 11 provides robust protection and support for the electrical batch while facilitating installation and maintenance of the internal components. The design of the main housing 111, the front cover 112 and the connection member 113 enables the outer case 11 to fix the internal components more firmly, improving the overall structural strength and durability of the product.
The working principle of the invention is as follows:
1. The user starts the electric screwdriver, the rotary motor 12 starts to work, and the rotary part 121 at the bottom end of the rotary motor 12 drives the driving shaft 122 to rotate.
Drive shaft 122 is coupled to spindle 13 via slot 132 to drive spindle 13 in rotation. The bit 16 at the other end of the spindle 13 rotates in preparation for a tightening or loosening operation.
2. Torque and hold down monitoring.
When the head 16 comes into contact with the screw and exerts a force, the first sensor body 14 and the second sensor body 15 start to operate.
The first sensor body 14 is provided with a first strain device in the middle thereof, and the first sensor body 14 monitors radial torsion data generated in the rotation process of the spindle 13 through the first strain device thereon.
The second sensor body 15 is provided with a second strain device that monitors the force to which the spindle 13 is subjected in the vertical direction (depression).
3. The design of the motor flange 123, the first sensor flange 17, the anti-collision isolation ring 18 and other components enhances the stability and safety of the internal structure of the electric batch.
The anti-collision isolation ring 18 effectively prevents direct collision between the shell 11 and the first sensor flange 17, and protects the deformation plane of the sensor from horizontal force.
4. The elastic piece 19 and the second sensor body 15 are arranged, so that the electric batch has the effect of preventing false touch when not in use, and the safety in the use process of the electric batch is improved.
5. And (5) eliminating static electricity.
The provision of the electrostatic brush 26 helps to eliminate static electricity on the spindle 13, preventing operational problems due to static electricity interference.
Thus, the working process of the electric batch with the torque sensor of the preferred embodiment is completed.
In summary, although the present invention has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is defined by the appended claims.