CN219656781U - Shifting fork detection device - Google Patents
Shifting fork detection device Download PDFInfo
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- CN219656781U CN219656781U CN202321043481.5U CN202321043481U CN219656781U CN 219656781 U CN219656781 U CN 219656781U CN 202321043481 U CN202321043481 U CN 202321043481U CN 219656781 U CN219656781 U CN 219656781U
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- positioning
- sleeve
- detection rod
- shifting fork
- bolt
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- 238000001514 detection method Methods 0.000 title claims abstract description 79
- 238000003754 machining Methods 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model provides a shifting fork detection device which is used for detecting the height difference between the axis of a lateral positioning groove on a shifting fork sleeve and fork feet, wherein a positioning disc is fixedly arranged in the middle of a bottom plate; the device has the advantages of simple structure, low manufacturing cost, high detection precision, simple and convenient use and high stability.
Description
Technical Field
The utility model belongs to the field of automobile part detection devices, and relates to a shifting fork detection device.
Background
The automobile gearbox shifting fork is an indispensable part in automobile manufacturing, and the shifting fork structure comprises a body, and two fork feet, lateral positioning grooves and the like which are arranged on the body, and the shifting fork needs certain precision to the positions of the fork feet and the lateral positioning grooves, and the lateral positioning grooves of the shifting fork are up end face position sizes of the fork feet, so that the processing size precision can directly influence the using effect and the service life of the shifting fork, or the problem that the shifting fork cannot be installed because the distance from the fork feet to the lateral positioning grooves is too large in assembly time gap is caused.
The existing detection method for three-coordinate sampling points is inaccurate in result, low in detection efficiency, and is affected by small cylindrical surface of the lateral positioning groove, uneven operation of operators and uneven distribution of sampling points in the three-coordinate sampling point process, so that the measurement result of the central line of the lateral positioning groove is inconsistent, and the measured data is large in error and low in efficiency.
Disclosure of Invention
The utility model provides a shifting fork detection device for overcoming the problems in the prior art.
The utility model is realized by adopting the following technical scheme:
a shifting fork detection device is used for detecting the height difference between the central line of a circular arc-shaped lateral positioning groove on a shifting fork sleeve at the rear part of a shifting fork and the fork foot at the front end of the shifting fork, and comprises a bottom plate, wherein a positioning disc is fixedly arranged in the middle of the bottom plate, a cylindrical positioning shaft seat which is vertical upwards is fixedly arranged on the positioning disc, the shifting fork sleeve on the shifting fork to be detected is sleeved on the positioning shaft seat during detection, a positioning sleeve which is provided with a sleeve structure with a light hole and is positioned at the rear part of the positioning disc is fixedly arranged at the rear part of the bottom plate, a positioning pin of an optical axis structure is in small clearance fit with the light hole of the positioning sleeve, so that the positioning pin can be adjusted in the positioning sleeve and is fixedly positioned, a sliding detection rod extending to the lateral positioning groove is connected above the positioning pin through a locking mechanism, the sliding detection rod can be inserted into and pulled out of the locking mechanism and is fixedly arranged on the first half section of the sliding detection rod, and the diameter of the cylindrical part of the sliding detection rod is the same as the diameter of the circular arc-shaped cylindrical surface of the lateral positioning groove on the shifting fork to be detected, and further the outer circle of the sliding detection rod can be inserted into the lateral positioning groove and can be completely placed on the concave surface of the side positioning groove and can be completely and can be placed at any position.
The further technical scheme comprises the following steps:
the machining precision of the outer cylindrical surface of the cylindrical part of the sliding detection rod is more than one third of the tolerance zone of the concave surface of the lateral positioning groove.
The locking mechanism comprises a hollow cylindrical locking sleeve arranged in the horizontal direction, the rear end of the locking sleeve is fixedly connected with the top of the locating pin through a rectangular connecting block, a through groove is formed in the wall of the locking sleeve along the axial direction of the locking sleeve, a section of axial hole is formed in the locking sleeve along the axial direction, a bolt capable of being inserted into the through groove and the axial hole of the locking sleeve is arranged on the second half section of the sliding detection rod, a locking bolt capable of being screwed in and screwed out and locked at a fixed position is arranged at the front end of the locking sleeve, and the bolt of the sliding detection rod is inserted into the through groove and the axial hole of the locking sleeve and is fixed by screwing the locking bolt after the position is adjusted.
The front part of the axial hole of the locking sleeve is provided with a section of internal thread, the front end surface of the locking sleeve is provided with a through hole which is communicated with the axial hole and is coaxial with the axial hole, the locking bolt is provided with external threads, the locking bolt is in threaded connection with the locking sleeve, and after the bolt of the sliding detection rod is inserted into the through groove and the axial hole of the locking sleeve, the locking bolt is screwed to tightly push the bolt of the sliding detection rod in the axial hole of the locking sleeve so as to fix the sliding detection rod
The bottom plate is a rectangular plate structure formed by fine machining of cast iron.
The flatness of both the upper and lower surfaces of the base plate is less than 0.005mm.
The bottom plate is provided with a positioning pin hole for installing the positioning disc and the positioning sleeve, and the positioning disc and the positioning sleeve are respectively and fixedly installed in the positioning pin hole of the corresponding bottom plate.
The positioning sleeve is in threaded connection with a jacking bolt for jacking the positioning pin to fix the height.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a shifting fork detection device, which can avoid uncertainty caused by three-coordinate detection, simplify a detection method from a shifting fork lateral positioning groove to a fork foot, and can realize the rapid completion of a measurement task from the shifting fork lateral positioning groove to the position of the end face of the fork foot.
Drawings
The utility model is further described below with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a fork detecting device provided by the utility model.
Fig. 2 is a schematic view showing a partial structure of the positioning pin, the locking mechanism and the slide detecting rod after assembly.
Fig. 3 is a sectional view of the assembled locking mechanism and slide detecting rod.
Fig. 4 is a partial schematic view of a lateral detent on the fork pocket at the rear of the fork to be tested.
Fig. 5 is a schematic diagram of measuring the height between a sliding measuring rod and a bottom plate when the shifting fork detecting device provided by the utility model is used for detecting.
Fig. 6 is a schematic diagram of measuring the height between a fork leg and a bottom plate at the front end of a fork when the fork detection device provided by the utility model is used for detection.
In the figure: 1. the device comprises a bottom plate, a positioning disc, a positioning sleeve, a locking mechanism, a positioning shaft seat, a digital display height gauge, a locking bolt, a locking sleeve, a sliding detection rod, a positioning pin, a shifting fork, a lateral positioning groove, a fork foot and a jacking bolt.
Detailed Description
The utility model is described in detail below with reference to the attached drawing figures:
the utility model provides a shifting fork detection device, which is used for detecting the height difference between the central line of a circular arc-shaped lateral positioning groove 12 on a shifting fork sleeve at the rear part of a shifting fork 11 and a fork foot 13 at the front end of the shifting fork 11, and as shown in figure 1, the shifting fork detection device comprises a bottom plate 1, wherein the bottom plate 1 is of a rectangular plate structure formed by fine machining cast iron, the planeness of the upper surface and the lower surface of the bottom plate 1 is smaller than 0.005mm, a positioning disc 2 is fixedly arranged in the middle part of the bottom plate 1, a positioning pin hole for installing the positioning disc 2 is arranged on the bottom plate 1, the positioning disc 2 is fixedly arranged in the positioning pin hole of the bottom plate 1, a vertical columnar positioning shaft seat 5 is fixedly arranged on the positioning disc 2, and during detection, the shifting fork sleeve on the shifting fork 11 to be detected is sleeved and fixed on the positioning shaft seat 5, the rear part of the bottom plate 1 is fixedly provided with a positioning sleeve 3 with a unthreaded sleeve structure positioned behind the positioning disc 2, the bottom plate 1 is provided with a positioning pin hole for installing the positioning sleeve 3, the positioning sleeve 3 is fixedly installed in the corresponding positioning pin hole of the bottom plate 1, the positioning pin 10 with an optical axis structure is in small clearance fit with the unthreaded hole of the positioning sleeve 3 so that the positioning pin 10 can be adjusted in the threaded positioning sleeve 3 and the height is fixed, the side wall of the positioning sleeve 3 is provided with a threaded through hole, and a jacking bolt 14 is installed on the side wall of the positioning sleeve 3 through the threaded connection to jack the positioning pin 10 to be fixed in height. The upper part of the locating pin 10 is connected with a sliding detection rod 9 extending to a lateral locating groove 12 through a locking mechanism 4, the sliding detection rod 9 can be inserted into and pulled out of the locking mechanism 4 and fixed, the front half section of the sliding detection rod 9 is cylindrical, the diameter of the cylindrical part of the sliding detection rod 9 is the same as the diameter of the circular arc of the lateral locating groove 12 on a shifting fork 11 to be detected, the machining precision of the outer cylindrical surface of the cylindrical part of the sliding detection rod 9 is more than one third of the tolerance zone of the concave surface of the lateral locating groove 12, the outer cylindrical surface of the sliding detection rod 9 can be completely attached to the concave surface of the circular arc of the lateral locating groove 12, the cylindrical part of the sliding detection rod 9 can be inserted into the lateral locating groove 12, the axis of the sliding detection rod 9 and the central line of the lateral locating groove 12 are on the same horizontal plane, and the digital display height ruler 6 capable of being randomly moved and placed on the bottom plate 1 is further included.
In this embodiment, as shown in fig. 2, the locking mechanism 4 includes a hollow cylindrical locking sleeve 8 disposed in a horizontal direction, the rear end of the locking sleeve 8 is fixedly connected with the top of the positioning pin 10 through a rectangular connecting block, a through groove is formed in the wall of the locking sleeve 8 along the axial direction of the locking sleeve 8, a section of axial hole is formed in the interior of the locking sleeve 8 along the axial direction, a bolt capable of being inserted into the through groove and the axial hole of the locking sleeve 8 is arranged in the rear half section of the sliding detection rod 9, a locking bolt 7 capable of being screwed in and screwed out and locked at a fixed position is arranged at the front end of the locking sleeve 8, and after the bolt of the sliding detection rod 9 is inserted into the through groove and the axial hole of the locking sleeve 8 and the position is adjusted, the locking bolt 7 is screwed to fix the sliding detection rod 9.
In this embodiment, as shown in fig. 3, a section of internal thread is formed at the front part of the axial hole of the locking sleeve 8, a through hole which is communicated with the axial hole and coaxial with the axial hole is formed at the front end surface of the locking sleeve 8, the locking bolt 7 is provided with external threads, the locking bolt 7 is in threaded connection with the locking sleeve 8, and after the bolt of the sliding detection rod 9 is inserted into the through groove and the axial hole of the locking sleeve 8, the bolt of the sliding detection rod 9 is tightly pressed in the axial hole of the locking sleeve 8 by screwing the locking bolt 7 so as to fix the sliding detection rod 9.
The general process of detection by using the shifting fork detection device provided by the utility model is as follows:
firstly, placing a sliding detection rod 9 in a locking sleeve 8, screwing a locking knob 7 into the locking sleeve 8 for use, and finally placing a locking mechanism 4 into a positioning sleeve 3 through a positioning pin 10; and then the positioning shaft seat 5 is placed on the positioning disc 2.
The shifting fork 11 is sleeved on the positioning shaft seat 5 through a shifting fork sleeve of the shifting fork 11 to position the shifting fork, the central lines of the sliding detection rod 9 and the lateral positioning groove 12 are as flat as possible by adjusting the height of the positioning pin 10 in the positioning sleeve 3, and the sliding detection rod 9 is close to the lateral positioning groove 12 through rotating the locking bolt 7 until the sliding detection rod 9 is completely attached to the lateral positioning groove 12, and at the moment, the sliding detection rod 9 is locked by screwing the locking bolt 7;
pressing one end (vernier) of the digital display height gauge 6 above the sliding detection rod 9 (the highest point of the cylindrical surface at the front end of the cylindrical part), and at the moment, adjusting the indicating value of the height gauge to zero; and then pressing one end (vernier) of the digital display height gauge 6 above the sliding detection rod 9 (the highest point of the cylindrical surface at the front end of the cylindrical part), finally pressing one end (vernier) of the digital display height gauge 6 above the sliding detection rod 9 (the highest point of the cylindrical surface at the rear end of the cylindrical part), observing whether the displayed value of the height gauge is zero, if not, loosening the locking knob 7, and repeatedly adjusting the height of the positioning pin 10 in the positioning sleeve 3 to enable the sliding detection rod 9 until the displayed value is zero. And (3) moving the digital display height ruler 6 on the bottom plate 1 to the upper end face of the fork leg 13 to obtain a numerical value, subtracting the diameter of the cylindrical part of the sliding detection rod 9 from the numerical value to obtain the distance from the lateral positioning groove 12 to the upper end face of the fork leg 13, and if the distance is judged to be qualified within a tolerance, otherwise, the distance is not qualified.
Claims (8)
1. A shifting fork detection device is used for detecting the height difference between the central line of a circular arc-shaped lateral positioning groove (12) on a shifting fork sleeve at the rear part of a shifting fork (11) and a fork foot (13) at the front end of the shifting fork (11), and is characterized by comprising a bottom plate (1), wherein a positioning disc (2) is fixedly arranged in the middle of the bottom plate (1), a vertical columnar positioning shaft seat (5) is fixedly arranged on the positioning disc (2), during detection, the shifting fork sleeve on the shifting fork (11) to be detected is sleeved and fixed on the positioning shaft seat (5), a positioning sleeve (3) with a light hole is fixedly arranged at the rear part of the bottom plate (1), a positioning pin (10) with a light hole of the positioning sleeve (3) with a light axis structure is in small clearance fit, so that the positioning pin (10) can be adjusted in the positioning sleeve (3) in height and the fixed position, a sliding detection rod (9) extending to the lateral positioning groove (12) is fixedly arranged above the positioning pin (10) through a locking mechanism (4), the sliding detection rod (9) can be inserted into the cylindrical positioning sleeve (12) with the same diameter as the diameter of the sliding detection rod (9) at the front part to be detected, and the diameter of the sliding detection rod (9 can be detected to be the same, the outer cylindrical surface of the sliding detection rod (9) can be inserted into the lateral positioning groove (12) and is completely attached to the arc-shaped concave surface of the lateral positioning groove (12), and the sliding detection rod further comprises a digital display height gauge (6) which can be moved at any position and is placed on the bottom plate (1).
2. A fork detection device according to claim 1, characterized in that the machining precision of the outer cylindrical surface of the cylindrical part of the slide detection bar (9) is greater than one third of the tolerance zone of the concavity of the lateral positioning groove (12).
3. The shifting fork detection device according to claim 1, wherein the locking mechanism (4) comprises a hollow cylindrical locking sleeve (8) arranged in the horizontal direction, the rear end of the locking sleeve (8) is fixedly connected with the top of the positioning pin (10) through a rectangular connecting block, a through groove is formed in the cylinder wall of the locking sleeve (8) along the axial direction of the locking sleeve (8), a section of axial hole is formed in the inner part of the locking sleeve (8) along the axial direction, a bolt capable of being inserted into the through groove and the axial hole of the locking sleeve (8) is arranged in the rear half section of the sliding detection rod (9), a locking bolt (7) capable of being screwed in and screwed out and locked at a fixed position is arranged at the front end of the locking sleeve (8), and after the bolt of the sliding detection rod (9) is inserted into the through groove and the axial hole of the locking sleeve (8) and is adjusted, the locking bolt (7) is screwed to fix the sliding detection rod (9).
4. A fork detection device according to claim 3, characterized in that the front part of the axial hole of the lock sleeve (8) is provided with an internal thread, the front end surface of the lock sleeve (8) is provided with a through hole which is communicated with the axial hole and is coaxial with the axial hole, the lock bolt (7) is provided with an external thread, the lock bolt (7) is in threaded connection with the lock sleeve (8), and after the bolt of the sliding detection rod (9) is inserted into the through groove and the axial hole of the lock sleeve (8), the lock bolt (7) is screwed to tightly press the bolt of the sliding detection rod (9) in the axial hole of the lock sleeve (8) so as to fix the sliding detection rod (9).
5. A fork detection device according to claim 1, characterized in that the bottom plate (1) is a rectangular plate structure finished from cast iron.
6. A fork detection device according to claim 1, characterized in that the flatness of both the upper and lower surfaces of the bottom plate (1) is less than 0.005mm.
7. The shifting fork detection device according to claim 1, wherein the bottom plate (1) is provided with positioning pin holes for installing the positioning disc (2) and the positioning sleeve (3), and the positioning disc (2) and the positioning sleeve (3) are respectively fixedly installed in the positioning pin holes of the corresponding bottom plate (1).
8. A fork detection device according to claim 1, characterized in that the positioning sleeve (3) is screwed with a tightening bolt (14) for tightening the positioning pin (10) to a fixed height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043481.5U CN219656781U (en) | 2023-05-05 | 2023-05-05 | Shifting fork detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043481.5U CN219656781U (en) | 2023-05-05 | 2023-05-05 | Shifting fork detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219656781U true CN219656781U (en) | 2023-09-08 |
Family
ID=87854264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321043481.5U Active CN219656781U (en) | 2023-05-05 | 2023-05-05 | Shifting fork detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219656781U (en) |
-
2023
- 2023-05-05 CN CN202321043481.5U patent/CN219656781U/en active Active
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