A tool structure for sizing a shift fork opening

Abstract

The utility model belongs to the technical field of automobile gearbox part size correction, specifically relates to a tool structure for shift fork opening size correction, the utility model discloses the reasonable structure setting of shift fork opening size correction big tool and shift fork opening size correction small tool can be carried out to the opening correction of the shift fork of opening size partial big or partial small simultaneously, and through the cooperation of both, can carry out reverse correction to the overcorrected shift fork, and the part is convenient to replace, and size adjustment is simple, the correction efficiency of shift fork product is improved greatly, and the product quality is guaranteed, the utility model discloses compact overall structure, and stable and reliable are used, and convenient, quick, through the interval of adjusting front and back clamps and replacing the size of guiding recess inner pad, can adapt to the batch correction of a plurality of different size shift forks, effectively reduce production cost, and the application prospect is broad, and it is easy to promote.

Description

Technical Field

[0001] This utility model belongs to the field of automotive transmission parts size calibration technology, specifically relating to a tooling structure for calibrating the opening size of a shift fork. Background Technology

[0002] In automotive transmission parts, shift forks are crucial transmission components, and their post-weld shaping significantly impacts production quality and efficiency. Generally, shift forks deform after welding due to heat, and the direction and amount of deformation are not entirely consistent. This leads to out-of-tolerance dimensions in the shift fork opening, requiring shaping using molds or manual tapping. Traditional manual tapping relies heavily on the operator's experience and feel, making it difficult to meet the tolerance requirements of high-precision products. Furthermore, during the shaping process, precise control of tapping force and angle often results in surface dents due to excessive tapping, and localized deformation due to directional tapping errors. These damages severely affect the product's appearance and performance; in extreme cases, parts subjected to excessive force may even crack, rendering them unusable. While existing mold calibration techniques utilize standardized equipment, they still suffer from significant drawbacks. Due to substantial variations in deformation after welding between different batches of shift forks, frequent adjustments to mold parameters are necessary during production. Furthermore, when switching product models, the mold changeover process involves multiple steps, including mold disassembly, cleaning, installation, and debugging, with each changeover taking several hours, drastically reducing production efficiency. Moreover, because mold parameters cannot be accurately matched to the complex and ever-changing deformation conditions in real time, the standard deviation for product dimensional consistency is large, leading to significant fluctuations in batch product quality and making it difficult to guarantee product quality stability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a tooling structure for adjusting the opening size of shift forks. The structure is compact, reliable, and can simultaneously adjust the opening size of shift forks that are too large or too small. It is also simple to operate and easy to replace parts, which can greatly improve the adjustment efficiency of shift fork products.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A tooling structure for adjusting the opening size of a shift fork mainly includes: a tooling 100 for adjusting the opening size of a shift fork to be enlarged and a tooling 200 for adjusting the opening size of a shift fork to be reduced. The tooling 100 for adjusting the opening size of a shift fork to be enlarged is used to widen and adjust the opening size of a shift fork 300 to be adjusted when the opening size is smaller than the standard value. The tooling 200 for adjusting the opening size of a shift fork to be adjusted when the opening size is larger than the standard value is used to narrow and adjust the opening size of a shift fork 400 to be adjusted when the opening size is larger than the standard value. The fork opening size calibration fixture 100 includes a calibration fixture base 110 fixedly installed on the press worktable. The upper surface of the calibration fixture base 110 is movably provided with a front clamping plate 105 and a rear clamping plate 106 for clamping the fork feet of the fork to be calibrated 300. The front clamping plate 105 and the rear clamping plate 106 are connected by adjusting bolts 108. An arc-shaped calibration block 107 is provided between the front clamping plate 105 and the rear clamping plate 106. The two fork feet at the bottom of the fork to be calibrated 300 are respectively in close contact with the expanded arc surfaces on both sides of the arc-shaped calibration block 107. A contouring pressure block 104 is pressed on the top of the fork to be calibrated 300. The fork opening size adjustment fixture 200 includes a adjustment fixture base 207 fixedly installed on the press worktable. A column adjustment block 203 is fixedly installed on the upper surface of the adjustment fixture base 207. The column adjustment block 203 has a guide groove 204 for inserting the fork feet of the second adjustment fork 400 to be adjusted along the longitudinal direction on its side. The bottom of the guide groove 204 is provided with an adjustable pad 205 with replaceable size. Both fork feet of the second adjustment fork 400 are inserted into the guide groove 204, and one fork foot abuts against the upper surface of the adjusting pad 205. The top of the other fork foot is pressed with a flat pressing block 202. The contouring block 104 and the flat block 202 are respectively connected to the corresponding pressure application end on the press via connecting pin 101 and connecting pin 201.

[0005] Preferably, the bottom shape of the contouring block 104 is adapted to the top shape of the fork to be shaped 300, and the top of the contouring block 104 is fixedly installed with a connecting block 103 by a connecting bolt 102, and the connecting pin 101 is inserted into the connecting block 103 and fixedly connected to the contouring block 104.

[0006] Preferably, the adjusting bolt 108 is connected between the front clamping plate 105 and the rear clamping plate 106, and is used to adjust the distance between the front clamping plate 105 and the rear clamping plate 106 to clamp fork feet of various thicknesses.

[0007] Preferably, the large tooling base 110 is installed on one side of the press worktable by a plurality of fixing bolts 109.

[0008] Preferably, the top of the fork to be calibrated 300 with an opening size smaller than the standard value is pressed with a contouring block 104, and the two fork feet at the bottom end are respectively in close contact with the expanded arc surfaces on both sides of the arc-shaped calibrating block 107. The contouring block 104 is pressed by a press to expand and calibrate the opening of the fork feet of the fork to be calibrated 300.

[0009] Preferably, the side of the column shaping block 203 is provided with a plurality of guide grooves 204 parallel to the longitudinal direction, and each guide groove 204 is provided with an adjustment pad 205 of different size at the bottom.

[0010] Preferably, the small tooling base 207 is installed on the other side of the press worktable by a plurality of fixing bolts 206.

[0011] Preferably, the two forks of the second fork 400 to be calibrated, whose opening size is larger than the standard value, are both inserted into the same guide groove 204, and one fork abuts against the upper surface of the adjusting pad 205 at the bottom of the guide groove 204, while the top of the other fork is pressed with a flat pressing block 202. Pressure is applied to the flat pressing block 202 by a press to narrow and calibrate the opening of the fork of the second fork 400 to be calibrated.

[0012] Compared with the prior art, the present invention has the following main advantages: 1. This utility model, through the reasonable structural design of the tooling for adjusting the opening size of the shift fork and the tooling for adjusting the opening size of the shift fork, can simultaneously adjust the opening size of shift forks that are too large or too small. Furthermore, through the combined use of the two, shift forks that have been over-adjusted can be reversed. The parts are easy to replace and the size adjustment is simple, which greatly improves the adjustment efficiency of shift fork products and ensures product quality. 2. This utility model has a compact overall structure, is stable and reliable in use, and is convenient and quick to operate. By adjusting the distance between the front and rear clamping plates and replacing the size of the pads in the guide groove, it can adapt to the batch calibration of various sizes of shift forks, effectively reducing production costs. It has broad application prospects and is easy to promote. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall tooling structure in an embodiment of this utility model; Figure 2 This is the front view of the tooling for adjusting the opening size of the shift fork in this embodiment of the present invention; Figure 3 This is a left view of the tooling for adjusting the opening size of the shift fork in this embodiment of the present invention; Figure 4 This is the front view of the tooling for adjusting the opening size of the shift fork in this embodiment of the present invention; Figure 5 This is a left view of the tooling for adjusting the opening size of the shift fork in an embodiment of this utility model.

[0014] In the diagram: 100 - Fixture for calibrating the opening size of the shift fork; 200 - Fixture for calibrating the opening size of the shift fork; 300 - Shift fork to be calibrated (opening size smaller than standard value, first); 400 - Shift fork to be calibrated (opening size larger than standard value, second); 101 - Connecting pin one; 102 - Connecting bolt one; 103 - Connecting block; 104 - Contouring pressure block; 105 - Front clamping plate; 106 - Rear clamping plate; 107 - Arc-shaped calibration block; 108 - Adjusting bolt; 109 - Fixing bolt one; 110 - Base of the calibration fixture; 201 - Connecting pin two; 202 - Flat pressure block; 203 - Column calibration block; 204 - Guide groove; 205 - Adjusting pad; 206 - Fixing bolt two; 207 - Base of the calibration fixture. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0020] This embodiment provides a tooling structure for adjusting the opening size of a shift fork, such as... Figure 1As shown, the device includes a fork opening size calibration fixture 100 and a fork opening size calibration fixture 200 arranged side by side on the press worktable. The fork opening size calibration fixture 100 is used to widen and calibrate the fork 300 to be calibrated whose opening size is smaller than the standard value. The fork opening size calibration fixture 200 is used to narrow and calibrate the fork 400 to be calibrated whose opening size is larger than the standard value. like Figures 2-3 As shown, the fork opening size calibration fixture 100 includes a calibration fixture base 110 fixedly installed on the press worktable. The upper surface of the calibration fixture base 110 is movably provided with a front clamping plate 105 and a rear clamping plate 106 for clamping the fork feet of the fork to be calibrated 300. The front clamping plate 105 and the rear clamping plate 106 are connected by adjusting bolts 108, and an arc-shaped calibration block 107 is provided between the front clamping plate 105 and the rear clamping plate 106. The two fork feet at the bottom of the fork to be calibrated 300 are respectively in close contact with the expanded arc surfaces on both sides of the arc-shaped calibration block 107, and a contouring pressure block 104 is pressed on the top of the fork to be calibrated 300. like Figures 4-5 As shown, the fork opening size reduction fixture 200 includes a reduction fixture base 207 fixedly installed on the press worktable. A column correction block 203 is fixedly installed on the upper surface of the reduction fixture base 207. The column correction block 203 has a guide groove 204 for inserting the fork feet of the second fork 400 to be corrected along the longitudinal direction on its side. The bottom of the guide groove 204 is provided with an adjustable pad 205 with replaceable size. Both fork feet of the second fork 400 are inserted into the guide groove 204, and one fork foot abuts against the upper surface of the adjusting pad 205. The top of the other fork foot is pressed with a flat pressing block 202. The contouring block 104 and the flat block 202 are respectively connected to the corresponding pressure application end on the press via connecting pin 101 and connecting pin 201.

[0021] Furthermore, the bottom shape of the contouring block 104 is adapted to the top shape of the fork to be calibrated 300, and the top of the contouring block 104 is fixedly mounted with a connecting block 103 by a connecting bolt 102. The connecting pin 101 passes through the connecting block 103 and is fixedly connected to the contouring block 104.

[0022] Furthermore, the adjusting bolt 108 is connected between the front clamping plate 105 and the rear clamping plate 106, and is used to adjust the distance between the front clamping plate 105 and the rear clamping plate 106 to clamp fork feet of various thicknesses, thereby preventing the fork to be calibrated from swinging back and forth during the calibration process.

[0023] Furthermore, the large tooling base 110 is installed on one side of the press worktable by multiple fixing bolts 109.

[0024] Furthermore, the top of the shift fork 300 to be calibrated, which has an opening size smaller than the standard value, is pressed with a contouring block 104, and the two fork feet at the bottom end are respectively pressed against the expanded arc surfaces on both sides of the arc-shaped calibrating block 107. The contouring block 104 is pressed by a press to expand and calibrate the opening of the fork feet of the shift fork 300 to be calibrated.

[0025] Furthermore, the side of the column shaping block 203 is provided with a plurality of guide grooves 204 parallel to the longitudinal direction, and each guide groove 204 is provided with an adjustment pad 205 of different size at the bottom. Furthermore, the adjusting pad 205 and the corresponding guide groove 204 are fitted with a small interference fit. It is pressed into the bottom of the groove, which can prevent other parts of the shift fork from interfering with the base, and can also be adapted to shift fork with different opening sizes by changing its height dimension.

[0026] Furthermore, the small tooling base 207 is installed on the other side of the press worktable by multiple fixing bolts 206.

[0027] Furthermore, the two forks of the second shift fork 400 to be calibrated, whose opening size is larger than the standard value, are both inserted into the same guide groove 204, and one of the forks abuts against the upper surface of the adjusting pad 205 at the bottom of the guide groove 204, while the top of the other fork is pressed with a flat pressure block 202. Pressure is applied to the flat pressure block 202 by a press to reduce the opening of the fork of the second shift fork 400 to be calibrated.

[0028] In practical use: 1) When the opening size of the shift fork to be calibrated is too small (the opening size is smaller than the standard value), press the shift fork to be calibrated according to... Figures 2-3 The fixture shown is clamped in the shift fork opening size calibration fixture 100. The end limit on the press is adjusted, and pressure is applied to the conforming pressure block through the corresponding pressure application end, so that the opening of the shift fork to be calibrated is expanded from small to large along the expanding arc surface on both sides of the arc surface calibration block. When the pressure application end reaches the limit position, the entire calibration process is completed. Then, with the help of inspection tools such as go and no-go gauges, the current calibrated shift fork opening size is quickly checked to see if it is qualified. After adjusting the limit to a reasonable position according to the inspection results after calibration, batch calibration can be carried out.

[0029] 2) When the opening size of the shift fork to be calibrated is too large (the opening size is greater than the standard value), adjust the shift fork to be calibrated according to... Figures 4-5The fixture shown is clamped in the fork opening size reduction tool 200. The end limit on the press is adjusted, and pressure is applied to the flat pressure block through the corresponding pressure application end, so that the opening of the fork to be shaped is pressed from large to small along the guide groove of the column shaping block. When the pressure application end reaches the limit, the entire shaping process is completed. Then, with the help of inspection tools such as go and no-go gauges, the current reduced fork opening size is quickly checked to see if it is qualified. After adjusting the limit to a reasonable position according to the inspection results after shaping, batch reduction shaping can be carried out.

[0030] In addition, if the large-calibration fixture makes the opening size of the shift fork to be calibrated too large, a small-calibration fixture can be used to calibrate it in reverse. If the small-calibration fixture makes the opening size of the shift fork to be calibrated too small, a large-calibration fixture can be used to calibrate it in reverse until the opening size of the shift fork to be calibrated is qualified.

[0031] Furthermore, all parts of this application that are not described in detail are the same as or implemented using existing technology.

[0032] In summary: 1. This utility model, through the reasonable structural design of the tooling for adjusting the opening size of the shift fork and the tooling for adjusting the opening size of the shift fork, can simultaneously adjust the opening size of shift forks that are too large or too small. Furthermore, through the combined use of the two, shift forks that have been over-adjusted can be reversed. The parts are easy to replace and the size adjustment is simple, which greatly improves the adjustment efficiency of shift fork products and ensures product quality. 2. This utility model has a compact overall structure, is stable and reliable in use, and is convenient and quick to operate. By adjusting the distance between the front and rear clamping plates and replacing the size of the pads in the guide groove, it can adapt to the batch calibration of various sizes of shift forks, effectively reducing production costs. It has broad application prospects and is easy to promote.

[0033] The above embodiments are only used to illustrate the design concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The protection scope of this utility model is not limited to the above embodiments. Therefore, all equivalent changes or modifications made based on the principles and design ideas disclosed in this utility model are within the protection scope of this utility model.

Claims

1. A tooling structure for adjusting the opening size of a shift fork, characterized in that: The fixture includes a tooling for increasing the opening size of the shift fork (100) and a tooling for decreasing the opening size of the shift fork (200). The tooling for increasing the opening size of the shift fork (100) includes a tooling base (110) fixedly installed on the worktable of the press. The upper surface of the tooling base (110) is movably provided with a front clamping plate (105) and a rear clamping plate (106) for clamping the fork feet of the shift fork (300) to be calibrated. The front clamping plate (105) and the rear clamping plate (106) are connected by adjusting bolts (108). An arc-shaped calibrating block (107) is provided between the front clamping plate (105) and the rear clamping plate (106). The two fork feet at the bottom of the shift fork (300) to be calibrated are respectively close to the expanded arc surfaces on both sides of the arc-shaped calibrating block (107). A contouring block (104) is pressed on the top of the shift fork (300) to be calibrated. The tooling (200) for adjusting the opening size of the shift fork includes a tooling base (207) fixedly installed on the press worktable. A column adjustment block (203) is fixedly installed on the upper surface of the tooling base (207). The column adjustment block (203) has a guide groove (204) for inserting the fork feet of the shift fork two (400) to be adjusted along the longitudinal direction on its side. The bottom of the guide groove (204) is provided with an adjustable pad (205) with replaceable size. Both fork feet of the shift fork two (400) are inserted into the guide groove (204). One fork foot abuts against the upper surface of the adjusting pad (205), and the top of the other fork foot is pressed with a flat pressure block (202). The contoured pressure block (104) and the flat pressure block (202) are respectively connected to the corresponding pressure application end on the press via connecting pin one (101) and connecting pin two (201).

2. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The bottom shape of the contouring block (104) is adapted to the top shape of the fork to be shaped (300), and the top of the contouring block (104) is fixedly installed with a connecting block (103) by a connecting bolt (102). The connecting pin (101) passes through the connecting block (103) and is fixedly connected to the contouring block (104).

3. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The adjusting bolt (108) is connected between the front clamping plate (105) and the rear clamping plate (106), and is used to adjust the distance between the front clamping plate (105) and the rear clamping plate (106) to clamp fork feet of various thicknesses.

4. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The base of the large tooling (110) is installed on one side of the press worktable by multiple fixing bolts (109).

5. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The top of the fork to be calibrated (300) with an opening size smaller than the standard value is pressed with a contouring block (104), and the two fork feet at the bottom end are respectively pressed against the expanded arc surface on both sides of the arc surface calibrating block (107). The contouring block (104) is pressed by a press to expand and calibrate the fork feet opening of the fork to be calibrated (300).

6. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The upright straightening block (203) has multiple guide grooves (204) parallel to the longitudinal direction on its side, and each guide groove (204) has an adjustment pad (205) of different size at its bottom.

7. The tooling structure for adjusting the opening size of a shift fork according to claim 4, characterized in that: The small tool base (207) is installed on the other side of the press worktable by multiple fixing bolts (206).

8. The tooling structure for adjusting the opening size of a shift fork according to claim 1, characterized in that: The two forks of the second fork to be calibrated (400) with an opening size greater than the standard value are both inserted into the same guide groove (204), and one fork abuts against the upper surface of the adjusting pad (205) at the bottom of the guide groove (204), while the top of the other fork is pressed with a flat pressure block (202). Pressure is applied to the flat pressure block (202) by a press to reduce the opening of the fork of the second fork to be calibrated (400).

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