A kind of hole depth cubingTechnical field
The present invention relates to a kind of hole depth cubing, a kind of cubing that can measure two hole depths with different depth deviation.
Background technology
In field of machining, due to different functional requirements, the degree of depth in hole can there be is certain control.When the tolerance range of hole depth is the biggest, conventional metering system is directly to measure with common slide calliper rule or depth indicator, but when the tolerance range of hole depth is the least, can not meet measurement requirement by general measure mode, can cause the biggest error.It addition, at auto parts and components manufacture field, a product often occurs two have identical degree of depth basic value A; identical diameter D, identical lower deviation value, but the measured hole that tolerance range is different; for case above, the most still there is no a kind of cubing that can respectively its degree of depth be measured.
Summary of the invention
The invention aims to provide a kind of hole depth cubing, it is possible to measuring two has an identical degree of depth basic value A, identical diameter D, identical lower deviation value, but the degree of depth of the different measured hole of tolerance range is the most qualified.
To achieve these goals, the technical scheme is that and be made up of measuring unit, location screw, slide post, measuring unit and slide post matched in clearance, location screw is arranged on the relevant position on measuring unit, and its top coordinates with the left open slot on slide post.
Measuring unit is made up of left end face, right end face, window bottom surface, locating surface, and left end face, the inner port edge of right end face are tip-angled shape；Locating surface and the perpendicular shape of slide post；Left end face and right end face form difference in height C, and C is the depth tolerances value of a measured hole.
Slide post is made up of lower measurement column, upper guide post, left open slot, right open slot, upper end face and bottom surface, and lower measurement column is positioned at the lower section of upper guide post, the lower surface of lower measurement column and the edge, upper surface of upper guide post all in tip-angled shape；Upper guide post has right open slot；Right open slot forms end face and bottom surface, its difference in height be B, B be the depth tolerances value of another measured hole.
The lower deviation that diameter D is measured hole diameter of lower measurement column.
Time actually used, lower measurement column is inserted in measured hole, and locating surface develops with measured hole plane；If the edge of the upper surface of upper guide post is between the difference in height of left end face and right end face, then the degree of depth of this measured hole is qualified；If window bottom surface is between end face and bottom surface, then the degree of depth of another one measured hole is qualified.
The present invention in use can measure two an identical degree of depth basic value A, identical diameter D, identical lower deviation value, but the degree of depth of the different measured hole of tolerance range is the most qualified；There is the features such as certainty of measurement is high, easy to use, simple in construction, cost of manufacture are low simultaneously.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention a kind of hole depth cubing.
Fig. 2 is the front view during measurement of the present invention a kind of hole depth cubing.
In figure, measurement column, 32-upper guide post, the left open slot of 321-, the right open slot of 322-, the upper end face of 33-, 34-bottom surface under 1-measuring unit, 2-location screw, 3-slide post, the left end face of 11-, the right end face of 12-, 13-window bottom surface, 14-locating surface, 31-.
Detailed description of the invention
The details of the concrete device that the present invention of explanation foundation below in conjunction with the accompanying drawings proposes and working condition.
This device is made up of measuring unit 1, location screw 2, slide post 3, measuring unit 1 and slide post 3 matched in clearance, and location screw 2 is arranged on the relevant position on measuring unit 1, and its top coordinates with the left open slot 321 on slide post 3.
Measuring unit 1 is made up of left end face 11, right end face 12, window bottom surface 13, locating surface 14, and left end face 11, the inner port edge of right end face 12 are tip-angled shape；Locating surface 14 and the perpendicular shape of slide post 3；Left end face 11 and right end face 12 form difference in height C, and C is the depth tolerances value of a measured hole.
Slide post 3 is made up of lower measurement column 31, upper guide post 32, left open slot 321, right open slot 322, upper end face 33 and bottom surface 34, lower measurement column 31 is positioned at the lower section of upper guide post 32, the lower surface of lower measurement column 31 and the edge, upper surface of upper guide post 32 all in tip-angled shape；Upper guide post 32 has right open slot 322；Right open slot 322 forms upper end face 33 and bottom surface 34, its difference in height be B, B be the depth tolerances value of another measured hole.
The lower deviation that diameter D is measured hole diameter of lower measurement column 31.
In the course of the work, lower measurement column 31 is inserted in measured hole, and locating surface 14 develops with measured hole plane；If the edge of the upper surface of upper guide post 32 is between left end face 11 and the difference in height of right end face 12, then the degree of depth of this measured hole is qualified；If window bottom surface 13 is between end face 33 and bottom surface 34, then the degree of depth of another one measured hole is qualified.