Disclosure of Invention
The present inventors have conducted diligent studies and have found that the drawbacks of the prior art shavers are caused by their structure and parameter settings, and in particular, they have focused attention on the operation of the inner tube at high rotational speeds and low reciprocation frequencies to meet the required cutting efficiency, and it is this limitation of conventional wisdom that causes the above-mentioned problems with shavers. In order to solve the above technical problems, an embodiment of the present invention provides a planer and a planer system.
According to a first aspect of the present invention, there is provided a planer.
A planing device comprises a shell, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;
The outer tube is provided with a proximal end part and a distal end part, the proximal end part of the outer tube is arranged at the distal end part of the outer shell, and the side wall of the distal end part of the outer tube is provided with a window;
The transmission shaft comprises a translation transmission shaft, a driving gear, an inner pipe, a gear shaft, a driving gear and a gear shaft, wherein the translation transmission shaft is provided with a bidirectional spiral structure, the bidirectional spiral structure comprises a forward thread groove and a backward thread groove, the translation module is engaged with the bidirectional spiral structure, and can reciprocate along the bidirectional spiral structure when the translation transmission shaft rotates;
the bidirectional spiral structure is characterized in that the pitches of the forward thread groove and the backward thread groove are the same, and the ratio of the effective thread length to the pitch is 2:1-6:1.
Further, the ratio of the effective thread length to the thread pitch is 3:1.
Further, the bidirectional screw structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used for connecting the forward thread groove and the backward thread groove at the proximal end of the bidirectional screw structure, and the distal transition groove is used for connecting the forward thread groove and the backward thread groove at the distal end of the bidirectional screw structure.
Further, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and smaller than the pitch of the backward thread groove.
Further, the proximal transition groove and/or the distal transition groove are configured such that when the drive shaft is rotated 180 °, the translation module completes switching between the forward thread groove and the rearward thread groove.
According to a second aspect of the invention, the invention also proposes another planing machine.
A planing device comprises a shell, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;
The outer tube is provided with a proximal end part and a distal end part, the proximal end part of the outer tube is arranged at the distal end part of the outer shell, and the side wall of the distal end part of the outer tube is provided with a window;
The transmission shaft comprises a translation transmission shaft, a driving gear, an inner pipe, a gear shaft, a driving gear and a gear shaft, wherein the translation transmission shaft is provided with a bidirectional spiral structure, the bidirectional spiral structure comprises a forward thread groove and a backward thread groove, the translation module is engaged with the bidirectional spiral structure, and can reciprocate along the bidirectional spiral structure when the translation transmission shaft rotates;
The bidirectional spiral structure is characterized in that the pitches of the forward thread groove and the backward thread groove are different, and the pitch of the backward thread groove is smaller than that of the forward thread groove.
Further, the bidirectional screw structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used for connecting the forward thread groove and the backward thread groove at the proximal end of the bidirectional screw structure, and the distal transition groove is used for connecting the forward thread groove and the backward thread groove at the distal end of the bidirectional screw structure.
Further, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and smaller than the pitch of the backward thread groove.
Further, the proximal transition groove and/or the distal transition groove are configured such that when the drive shaft is rotated 180 °, the translation module completes switching between the forward thread groove and the rearward thread groove.
Further, the ratio of the pitch of the back thread groove to the pitch of the front thread groove is 1:4-3:4.
Further, the ratio of the pitch of the back thread groove to the pitch of the front thread groove is 2:3.
Further, the ratio of the pitch of the back thread groove to the pitch of the front thread groove is 3:4.
Further, the ratio of the effective thread length of the bidirectional spiral structure to the pitch of the forward thread groove is 2:1-6:1, and the ratio of the effective thread length of the bidirectional spiral structure to the pitch of the backward thread groove is 4:1-6:1.
Further, the ratio of the effective thread length of the bidirectional screw structure to the pitch of the forward thread groove is 2.6:1, and the ratio of the effective thread length of the bidirectional screw structure to the pitch of the backward thread groove is 3.5:1.
Further, the effective thread length of the bidirectional spiral structure ranges from 19.2mm to 10.8mm, the pitch range of the forward thread groove ranges from 6.4mm to 3.2mm, and the pitch range of the backward thread groove ranges from 4.8mm to 0.8mm.
Further, the effective thread length of the bidirectional spiral structure is 15.2mm, the pitch range of the forward thread groove is 5.79mm, and the pitch of the backward thread groove is 4.34mm.
Further, the bidirectional spiral structure is arranged such that the frequency of the reciprocating movement of the inner tube is greater than 4 times/second when the rotational speed of the transmission shaft is 1000-3000 rpm.
Further, the bidirectional screw structure is arranged such that the frequency of the reciprocating movement of the inner tube is greater than 4 times/second at a rotational speed of the transmission shaft of 1500rpm-2000 rpm.
Further, the bi-directional spiral structure is configured such that the frequency of the reciprocating movement of the inner tube is greater than 4 times/second at a transmission shaft speed of 1750 rpm.
According to a third aspect of the invention, the invention also proposes another planing machine.
A planing device comprises a shell, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;
The outer tube is provided with a proximal end part and a distal end part, the proximal end part of the outer tube is arranged at the distal end part of the outer shell, and the side wall of the distal end part of the outer tube is provided with a window;
The transmission shaft comprises a translation transmission shaft, a driving gear, an inner pipe, a gear shaft, a driving gear and a gear shaft, wherein the translation transmission shaft is provided with a bidirectional spiral structure, the bidirectional spiral structure comprises a forward thread groove and a backward thread groove, the translation module is engaged with the bidirectional spiral structure, and can reciprocate along the bidirectional spiral structure when the translation transmission shaft rotates;
The bidirectional spiral structure is characterized in that the pitches of the forward thread groove and the backward thread groove are the same, and when the rotating speed of the transmission shaft is 1000-3000 rpm, the reciprocating frequency of the inner tube is more than 4 times/second.
Further, the inner tube reciprocates at a frequency greater than 4 times per second at a drive shaft rotational speed of 1500-2000 revolutions per minute.
Further, at a drive shaft speed of 1750 rpm, the inner tube reciprocates at a frequency greater than 4 times/second.
Further, the bidirectional screw structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used for connecting the forward thread groove and the backward thread groove at the proximal end of the bidirectional screw structure, and the distal transition groove is used for connecting the forward thread groove and the backward thread groove at the distal end of the bidirectional screw structure.
Further, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and smaller than the pitch of the backward thread groove.
Further, the proximal transition groove and/or the distal transition groove are configured such that when the drive shaft is rotated 180 °, the translation module completes switching between the forward thread groove and the rearward thread groove.
Further, the effective thread length is in the range of 19.2mm to 10.8mm and the pitch is in the range of 6.4mm to 3.2mm.
Further, the effective thread length is 15.2mm and the pitch is 5.07mm.
Further, the ratio of the effective thread length to the thread pitch is from 2:1 to 6:1.
Further, the ratio of the effective thread length to the thread pitch is 3:1.
Further, the transmission ratio of the driving gear to the gear part of the gear shaft ranges from 1.5 to 5.
Further, the transmission ratio of the driving gear to the gear portion of the gear shaft is 2.73.
Furthermore, the two ends of the inner tube are open and can be communicated with the air extractor, the gear shaft is of a hollow structure, and the inner tube penetrates through the gear shaft.
The translation module comprises a mounting frame and a threaded groove joint piece, wherein the mounting frame is provided with a first through hole, a translation transmission shaft penetrates through the first through hole and can rotate freely in the first through hole, the threaded groove joint piece is fixed on the mounting frame and is jointed with a forward threaded groove and a backward threaded groove, and when the translation transmission shaft rotates in one direction, the threaded groove joint piece moves back and forth along the threaded groove within the effective threaded length range of the bidirectional spiral structure, so that the mounting frame is driven to reciprocate.
Further, the threaded groove engagement member includes an interconnected base fixedly connected to the mounting bracket and a pawl engaged with either the forward threaded groove or the rearward threaded groove of the translating drive shaft.
Further, the pawl is of a Y-shaped structure.
According to a fourth aspect of the present invention, the present invention also proposes a planer system.
A planer system comprising any one of the foregoing planers and a drive means;
The driving device is provided with a driver, and the driver can drive the transmission shaft to rotate;
The drive means and the shaver are arranged to rotate the inner tube at a cutting factor of more than 0.15, which is the ratio of the rate of reciprocation of the inner tube to the magnitude of the linear velocity of the outer surface of the tip of the inner tube blade when the inner tube is rotated, at a rotational speed of less than 5000 revolutions per minute, and at a frequency of reciprocation of more than 4 times per second.
Further, the output rotating speed of the driving device is 1000-3000 rpm.
Further, the output rotating speed of the driving device is 1500-2000 rpm.
Further, the output rotation speed of the driving device is 1750 revolutions per minute.
The planing device has the advantages that the reciprocating frequency of the inner pipe is improved, the cutting efficiency is greatly improved by changing the structure of the bidirectional threads, the shaking risk is reduced by reducing the rotating speed of the inner pipe, the safety is improved, and the inner pipe is formed by adopting a single material, is formed at one time, does not need welding, and is improved. Other technical effects of embodiments of the present invention will be described in further detail in the specification.