Tool structure for machining chamfer of shift guide block

Abstract

The utility model discloses a tool structure of machining chamfer of gear shift guide block, including main part base, be equipped with and be arranged in parallel locating pin and pressing plate on the main part base, be equipped with support screw between the pressing plate and main part base, still be equipped with the compression assembly for fixed product between the pressing plate and main part base, and the compression assembly includes compression screw and nut body, still be equipped with support limiting piece between the pressing plate and main part base, and be equipped with the first fastener for fixing both between support limiting piece and main part base. The utility model discloses to the product single time clamping, can realize the processing to the product multiple positions, and the versatility is good.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, specifically relating to a tooling structure for chamfering a shift guide block. Background Technology

[0002] The shift guide block is a third- and fourth-gear guide block used in heavy-duty trucks, which requires machining processes in a machining center to obtain the product. During machining, the shift guide block often needs to be fixed; this fixing process requires corresponding tooling, and the design of the tooling often affects the final machining result. Existing patent CN119144808B discloses a tooling for surface heat treatment of the shift guide block, including an adaptive clamping and release mechanism, a bidirectional pressure relief mechanism, an automatic locking mechanism, and an external frame assembly. The existing tooling has a relatively simple fixing method, often requiring two clamping operations when machining different positions on the product, resulting in poor versatility. Therefore, a tooling structure for chamfering the shift guide block needs to be designed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a tooling structure for chamfering the shift guide block. This invention allows for the processing of multiple positions on a product in a single clamping, and has good versatility.

[0004] The objective of this invention is achieved through the following technical solution: a tooling structure for chamfering a shift guide block, comprising a main base, on which a positioning pin and a pressure plate are arranged side by side; a supporting screw is provided between the pressure plate and the main base, and a clamping assembly for fixing the product is also provided between the pressure plate and the main base, the clamping assembly including a clamping screw and a nut body; a supporting limiting member is also provided between the pressure plate and the main base, and a first fastener for fixing the two is provided between the supporting limiting member and the main base.

[0005] Preferably, the clamping screw and the nut body are threaded together, the pressure plate is provided with a waist-shaped groove for installing the clamping screw, and an inner recessed groove for installing the support screw is provided directly below the waist-shaped groove; both the clamping screw and the support screw extend into the main body base.

[0006] Preferably, the waist-shaped groove extends through the pressure plate, and the depth of the inner sinking groove is less than the thickness of the pressure plate; the radial width of the waist-shaped groove is the same as the radial width of the inner sinking groove, and the axial length of the inner sinking groove is greater than the axial length of the waist-shaped groove.

[0007] Preferably, the pressure plate has a pair of square protrusions on its end face facing the main base; when the pressure plate and the main base clamp and fix the product, one end face of the product is attached to the square protrusion, and the other end face of the product is attached to the support limiting member.

[0008] Preferably, both the support screw and the clamping screw are provided with a cylindrical portion, a retraction protrusion, and a first threaded portion; the cylindrical portion, the retraction protrusion, and the first threaded portion are arranged axially adjacent to each other in sequence, and the outer wall of the cylindrical portion is also provided with a rotating portion; the end of the support screw away from the first threaded portion is fitted into the inner recess, and the end of the clamping screw away from the first threaded portion passes through the waist-shaped groove; the end of the clamping screw away from the first threaded portion is provided with a second threaded portion, and the second threaded portion is provided with a nut body that is threadedly connected to it.

[0009] Preferably, both the support screw and the clamping screw extend and are mounted on the main body base; the main body base is provided with a first threaded hole for mounting the first threaded part, and the opening end of the first threaded hole is provided with a tool retraction part for mounting the tool retraction protrusion.

[0010] The internal recessed groove facilitates the limiting of the support screw; the oblong groove facilitates the installation of the clamping screw and also limits its movement. The square protrusion facilitates clamping and positioning of the product in conjunction with the support limiting component, ensuring product machining accuracy. Since the first threaded portion on both the support and clamping screws often cannot be machined to the root of the screw, a retraction protrusion is provided. When both the support and clamping screws are installed on the main body base, the first threaded portion is installed in the first threaded hole, and the retraction protrusion is located on the retraction part. The support screw allows for easy adjustment of the distance between the main body base and the pressure plate, and provides support for the pressure plate, resulting in better product fixation. The pressure plate is locked by the clamping screw and nut body, thus clamping the product between the pressure plate, the support limiting component, and the main body base.

[0011] Preferably, the support limiting member is disposed adjacent to the product between the main body base and the pressure plate, and the support limiting member has a convex structure; the support limiting member has a second threaded hole for installing a first fastener; the main body base has a first countersunk hole for installing the first fastener; the first fastener is a standard cylindrical head screw, which passes through the first countersunk hole and extends into the second threaded hole; the side of the support limiting member has an axially arranged mounting positioning part, which is disposed opposite to the pressure plate.

[0012] The installation positioning part facilitates positioning when installing the support limiting component; the support limiting component can be fixed to the main body base by the first fastener. When the product needs to be clamped, one end face of the product is in contact with the support limiting component, and the other end face of the product is in contact with the pressure plate, so that the clamping is more stable.

[0013] Preferably, the main body base is provided with a plurality of second fasteners that are threadedly connected thereto, and the second fasteners extend to be installed on an external machine tool; the main body base is provided with a third threaded hole for installing the second fasteners.

[0014] By setting a second fastener and a third threaded hole, the main body base can be easily fixed and installed on an external machine tool.

[0015] Preferably, the main body base is provided with a positioning hole for installing a positioning pin; the positioning pin includes a cylindrical connecting part, which is installed into the positioning hole; the positioning pin is also provided with a positioning protrusion for positioning the product, and an annular limiting step is provided between the positioning protrusion and the cylindrical connecting part.

[0016] The product has holes for interlocking positioning protrusions, and the end of the product with the holes is horizontal, so that the product can be placed horizontally on the main base; the product is positioned by setting an annular limiting step to prevent the product from falling downwards when it is assembled with the positioning pin.

[0017] Compared with existing technologies, this utility model has the following advantages: 1. The product's angle is positioned by a positioning pin, and then the upper and lower end faces of the product are positioned in conjunction with the supporting limiting component, pressure plate, and clamping assembly, ensuring that the orientation of the grooves on both sides of the product is consistent, thus providing better consistency when chamfering the grooves. 2. The pressure plate is connected to the main base through the clamping assembly. When disassembling parts, the pressure plate can automatically fall away from the product, which facilitates the installation of new products and improves the efficiency of the product assembly line operation. 3. The product is fixed by multiple positioning points, making the product more stable and reliable during processing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the processed product of this invention; Figure 2 This is a schematic diagram showing another perspective on the processed product of this novel invention; Figure 3 This is a bottom view of the pressure plate; Figure 4 This is a schematic diagram of the internal structure of the pressure plate; Figure 5 A schematic diagram of the structure supporting the screw; Figure 6 This is a schematic diagram of the clamping screw structure; Figure 7 A schematic diagram of the structure supporting the limiting component; Figure 8 A structural diagram of the supporting limiting component from another perspective; Figure 9 This is a structural diagram of the main base; Figure 10 A schematic diagram of the internal structure of the main base; Figure 11 This is a structural diagram of a locating pin; Figure 12A 3D view of the product to be processed; The markings in the diagram are: 1. Main base; 2. Positioning pin; 21. Columnar connecting part; 22. Positioning protrusion; 23. Annular limiting step; 3. Pressure plate; 31. Waist-shaped groove; 32. Inner countersunk groove; 33. Square protrusion; 4. Support screw; 5. Clamping assembly; 51. Clamping screw; 52. Nut body; 6. Support limiting part; 61. Second threaded hole; 62. Mounting positioning part; 7. First fastener; 8. Cylindrical part; 9. Retraction protrusion; 10. First threaded part; 11. Rotating part; 12. Second threaded part; 13. First threaded hole; 14. Retraction part; 15. First countersunk hole; 16. Second fastener; 17. Third threaded hole; 18. Positioning hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 12 As shown, this embodiment discloses a tooling structure for chamfering a shift guide block, including a main base 1, on which a positioning pin 2 and a pressure plate 3 are arranged side by side; a support screw 4 is provided between the pressure plate 3 and the main base 1, and a clamping assembly 5 for fixing the product is also provided between the pressure plate 3 and the main base 1, the clamping assembly 5 including a clamping screw 51 and a nut body 52; a support limiting member 6 is also provided between the pressure plate 3 and the main base 1, and a first fastener 7 for fixing the two is provided between the support limiting member 6 and the main base 1.

[0020] The clamping screw 51 and the nut body 52 are threadedly connected. The pressure plate 3 is provided with a waist-shaped groove 31 for installing the clamping screw 51, and an inner recessed groove 32 for installing the support screw 4 is provided directly below the waist-shaped groove 31. Both the clamping screw 51 and the support screw 4 extend into the main body base 1. The waist-shaped groove 31 penetrates the pressure plate 3, and the depth of the inner recessed groove 32 is less than the thickness of the pressure plate 3. The radial width of the waist-shaped groove 31 is the same as the radial width of the inner recessed groove 32, and the axial length of the inner recessed groove 32 is greater than the axial length of the waist-shaped groove 31. The end face of the pressure plate 3 facing the main body base 1 is provided with a pair of square protrusions 33. When the pressure plate 3 and the main body base 1 clamp and fix the product, one end face of the product is attached to the square protrusions 33, and the other end face of the product is attached to the support limiting member 6. Both the support screw 4 and the clamping screw 51 are provided with a cylindrical portion 8, a tool retraction protrusion 9, and a first threaded portion 10. The cylindrical portion 8, the tool retraction protrusion 9, and the first threaded portion 10 are arranged axially adjacent to each other in sequence. The outer wall of the cylindrical portion 8 is also provided with a rotating portion 11. The end of the support screw 4 away from the first threaded portion 10 is fitted into the inner recess 32. The end of the clamping screw 51 away from the first threaded portion 10 passes through the waist-shaped groove 31. The end of the clamping screw 51 away from the first threaded portion 10 is provided with a second threaded portion 12, and the second threaded portion 12 is provided with a nut body 52 that is threadedly connected to it. Both the support screw 4 and the clamping screw 51 extend and are installed on the main body base 1. The main body base 1 is provided with a first threaded hole 13 for installing the first threaded portion 10, and the opening end of the first threaded hole 13 is provided with a tool retraction portion 14 for installing the tool retraction protrusion 9.

[0021] The supporting limiting member 6 is disposed adjacent to the product between the main body base 1 and the pressure plate 3, and the supporting limiting member 6 has a convex structure. The supporting limiting member 6 has a second threaded hole 61 for installing a first fastener 7. The main body base 1 has a first countersunk hole 15 for installing the first fastener 7. The first fastener 7 is a standard cylindrical head screw, which passes through the first countersunk hole 15 and extends into the second threaded hole 61. The side of the supporting limiting member 6 has an axially oriented mounting positioning part 62, which is positioned opposite to the pressure plate 3. The main body base 1 has several second fasteners 16 threadedly connected to it, and the second fasteners 16 extend to an external machine tool. The main body base 1 has a third threaded hole 17 for installing the second fasteners 16. The main base 1 is provided with a positioning hole 18 for installing a positioning pin 2; the positioning pin 2 includes a cylindrical connecting part 21, which is installed into the positioning hole 18; the positioning pin 2 is also provided with a positioning protrusion 22 for positioning the product, and an annular limiting step 23 is provided between the positioning protrusion 22 and the cylindrical connecting part 21.

[0022] The specific operation process of this embodiment is as follows: the main body base 1 is fixed to the external machine tool by the second fastener 16; first, the positioning pin 2 is aligned with the positioning hole 18, and then the positioning pin 2 is tightly installed on the main body base 1; the support limiting member 6 is fixed to the main body base 1 by the first fastener 7, and then the product to be processed is placed on the positioning pin 2 and the support limiting member 6; when the product is placed, the groove on the product is aligned with the side of the support limiting member 6; then the height of the support screw 4 is adjusted accordingly, and then the pressure plate 3 is fixed to the main body base 1 by the clamping assembly 5; when installing the clamping screw 51, the position of the clamping screw 51 in the waist-shaped groove 31 is adjusted so that the outer wall of the clamping screw 51 is in contact with the side of the product; at the same time, the front side wall of the product is in contact with the mounting positioning part 62, thus limiting the front and rear of the product and preventing the product from rotating during the processing.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A tooling structure for chamfering a shift guide block, comprising a main base (1), characterized in that, The main base (1) is provided with a positioning pin (2) and a pressure plate (3) arranged side by side; a support screw (4) is provided between the pressure plate (3) and the main base (1), and a clamping assembly (5) for fixing the product is also provided between the pressure plate (3) and the main base (1). The clamping assembly (5) includes a clamping screw (51) and a nut body (52); a support limiting member (6) is also provided between the pressure plate (3) and the main base (1), and a first fastener (7) for fixing the two is provided between the support limiting member (6) and the main base (1).

2. The tooling structure for chamfering the shift guide block according to claim 1, characterized in that, The clamping screw (51) and the nut body (52) are threaded together. The pressure plate (3) is provided with a waist-shaped groove (31) for installing the clamping screw (51). The inner recess (32) for installing the support screw (4) is provided directly below the waist-shaped groove (31). The clamping screw (51) and the support screw (4) are both extended and installed into the main body base (1).

3. The tooling structure for chamfering the shift guide block according to claim 2, characterized in that, The waist-shaped groove (31) is set through the pressure plate (3), and the depth of the inner sinking groove (32) is less than the thickness of the pressure plate (3). The radial width of the waist-shaped groove (31) is the same as the radial width of the inner sinking groove (32), and the axial length of the inner sinking groove (32) is greater than the axial length of the waist-shaped groove (31).

4. The tooling structure for chamfering the shift guide block according to claim 2, characterized in that, The pressure plate (3) has a pair of square protrusions (33) on the end face facing the main body base (1); when the pressure plate (3) and the main body base (1) clamp and fix the product, one end face of the product is attached to the square protrusion (33), and the other end face of the product is attached to the support limiting member (6).

5. The tooling structure for chamfering the shift guide block according to claim 2, characterized in that, Both the support screw (4) and the clamping screw (51) are provided with a cylindrical part (8), a retraction protrusion (9) and a first threaded part (10); the cylindrical part (8), the retraction protrusion (9) and the first threaded part (10) are arranged axially adjacent to each other in sequence, and a rotating part (11) is also provided on the outer wall of the cylindrical part (8); the end of the support screw (4) away from the first threaded part (10) is fitted into the inner recess (32), and the end of the clamping screw (51) away from the first threaded part (10) passes through the waist-shaped groove (31); the end of the clamping screw (51) away from the first threaded part (10) is provided with a second threaded part (12), and a nut body (52) is provided on the second threaded part (12) and threadedly connected thereto.

6. The tooling structure for chamfering the shift guide block according to claim 5, characterized in that, The support screw (4) and the clamping screw (51) are both extended and installed on the main body base (1); the main body base (1) is provided with a first threaded hole (13) for installing the first threaded part (10), and the opening end of the first threaded hole (13) is provided with a retraction part (14) for installing the retraction protrusion (9).

7. The tooling structure for chamfering the shift guide block according to claim 1, characterized in that, The support limiting member (6) is disposed adjacent to the product between the main body base (1) and the pressure plate (3). The support limiting member (6) has a convex structure. The support limiting member (6) is provided with a second threaded hole (61) for installing the first fastener (7). The main body base (1) is provided with a first countersunk hole (15) for installing the first fastener (7). The first fastener (7) is a standard cylindrical head screw. The first fastener (7) passes through the first countersunk hole (15) and extends into the second threaded hole (61). The side of the support limiting member (6) is provided with an installation positioning part (62) arranged along its axial direction. The installation positioning part (62) is disposed opposite to the pressure plate (3).

8. The tooling structure for chamfering the shift guide block according to claim 1, characterized in that, The main body base (1) is provided with a plurality of second fasteners (16) that are threadedly connected thereto, and the second fasteners (16) extend to be installed on an external machine tool; the main body base (1) is provided with a third threaded hole (17) for installing the second fasteners (16).

9. The tooling structure for chamfering the shift guide block according to claim 1, characterized in that, The main base (1) is provided with a positioning hole (18) for installing a positioning pin (2); the positioning pin (2) includes a cylindrical connecting part (21), which is installed into the positioning hole (18); the positioning pin (2) is also provided with a positioning protrusion (22) for positioning the product, and an annular limiting step (23) is provided between the positioning protrusion (22) and the cylindrical connecting part (21).

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