Gear machining fixture

Abstract

The application relates to the technical field of mechanical tooling, and a gear machining clamp which comprises a rack, a horizontal positioning assembly and a vertical positioning assembly. The upper end of the rack is used for placing a gear, the horizontal positioning assembly is connected to the rack, the horizontal positioning assembly is used for embedding into a tooth groove in the outer periphery of the gear, the vertical positioning assembly is connected to the rack, and the vertical positioning assembly is used for abutting against one side of the gear away from the rack. The rack is used for placing the gear, the vertical positioning assembly abutting against one side of the gear away from the rack realizes the relative fixation of the gear and the rack in the vertical direction, the horizontal positioning assembly embedding into the tooth groove in the outer periphery of the gear realizes the relative fixation of the gear and the rack in the horizontal direction, the possibility of gear movement relative to the rack in the gear machining process is reduced, and the reliability of the clamp is improved.

Description

Technical Field

[0001] This application relates to the technical field of mechanical tooling, and in particular to a gear machining fixture. Background Technology

[0002] A gear is a mechanical component with teeth on its rim that can continuously mesh to transmit motion and power. In the late 19th century, with the emergence of the principle of generating gear cutting and specialized machine tools and cutting tools using this principle, the smoothness of gear operation became increasingly important as production developed.

[0003] When grinding gears, positioning fixtures are often used to fix them in place to facilitate grinding the teeth. In existing technologies, the following conventional methods are usually used to achieve stable clamping of gears: First, bolt clamping is used by setting pressure plates on both sides of the gear and fixing them with bolts; second, positioning pins are inserted into the gear holes, combined with auxiliary support structures to achieve fixation; third, positioning blocks with embedded tooth grooves are designed to achieve initial positioning by cooperating with the outer tooth grooves of the gear, and then additional clamping devices are used to complete the final fixation.

[0004] However, the above-mentioned conventional methods generally have certain drawbacks, especially when they are not good at simultaneously achieving horizontal and vertical positioning of gears. Utility Model Content

[0005] In order to simultaneously position the gear in both the horizontal and vertical directions and improve the reliability of the fixture, this application provides a gear machining fixture.

[0006] The gear machining fixture provided in this application adopts the following technical solution:

[0007] A gear machining fixture includes a frame, a horizontal positioning component, and a vertical positioning component. The upper end of the frame is used for placing a gear. The horizontal positioning component is connected to the frame and is used to embed into the tooth groove on the outer periphery of the gear. The vertical positioning component is connected to the frame and is used to abut against the side of the gear away from the frame.

[0008] By adopting the above technical solution, the frame is used to place the gear. The vertical positioning component abuts against the side of the gear away from the frame to achieve relative fixation of the gear and the frame in the vertical direction. The horizontal positioning component is embedded in the tooth groove on the outer circumference of the gear to achieve relative fixation of the gear and the frame in the horizontal direction. This reduces the possibility of the gear moving relative to the frame during gear processing and improves the reliability of the fixture.

[0009] Preferably, the frame includes a base, a boss, and a support base. The boss is connected to the upper end of the base, and the upper end of the boss is used for placing gears. The base has a first fixing hole, and the boss has a first mounting hole. The first mounting hole is used for a bolt to pass through and be threaded into the first fixing hole. The support base is connected to the base, and the horizontal positioning component is connected to the support base. The base has a second fixing hole, and the support base has a second mounting hole. The second mounting hole is used for a bolt to pass through and be threaded into the second fixing hole.

[0010] By adopting the above technical solution, the frame consists of a base, a boss, and a support seat. The boss and support seat can be disassembled and assembled as needed, which facilitates the replacement or maintenance of the boss and support seat, and improves the applicability and service life of the fixture.

[0011] Preferably, the end of the boss away from the frame is connected to a positioning post, the side wall of the positioning post is in contact with the wall of the gear through hole, the vertical positioning assembly includes an abutment plate and a fixing bolt, the abutment plate is slidably connected to the positioning post, the abutment plate is used to press against the side of the gear away from the boss, the abutment plate is provided with a connecting hole, and the shank of the fixing bolt passes through the connecting hole and is threadedly connected to the positioning post.

[0012] By adopting the above technical solution, the side wall of the positioning column fits into the wall of the gear through hole, thereby achieving relative fixation of the gear and the boss in the horizontal direction. After the fixing bolt passes through the connecting hole, it is threadedly connected to the positioning column, so that the abutment plate presses against the side of the gear away from the boss, thereby achieving relative fixation of the gear and the boss in the vertical direction. This makes it easy to tighten the fixing bolt, realize the placement and removal of the gear, and improve the convenience of the fixture.

[0013] Preferably, a connecting groove is provided at the wall of the connecting hole, the connecting groove penetrates the abutment plate in a direction perpendicular to the axis of the connecting hole, and the distance between the two sides of the groove wall is not less than the outer diameter of the fixing bolt rod.

[0014] By adopting the above technical solution, it is not necessary to completely detach the fixing bolt from the positioning post. When the distance between the head of the fixing bolt and the side surface of the gear away from the boss is greater than the thickness of the abutment plate, the shank of the fixing bolt can slide out of the connecting hole along the connecting groove to realize the loading and unloading of the gear and improve the convenience of the fixture.

[0015] Preferably, the horizontal positioning component includes a limiting post, and the support base has a guide groove on the side near the boss. One end of the limiting post is coaxially slidably embedded in the guide groove, and the side wall of the limiting post is in contact with the groove wall of the guide groove. The other end of the limiting post is used to embed into the tooth groove on the outer circumference of the gear. The bottom of the guide groove has a connecting hole, and the end of the limiting post away from the boss is connected to a connecting post. The connecting post extends out of the support base after passing through the connecting hole.

[0016] By adopting the above technical solution, the guide groove wall fits into the side wall of the limiting post, and the guide groove guides the sliding of the limiting post. One end of the connecting post extends out of the support seat after passing through the connecting hole, which facilitates the sliding of the limiting post through the connecting post. One end of the limiting post is embedded in the tooth groove on the outer circumference of the gear, realizing the circumferential fixation of the gear and the boss, reducing the possibility of the gear rotating relative to the boss during the processing, and improving the reliability of the fixture.

[0017] Preferably, the horizontal positioning assembly further includes a handle, a lifting ring is connected to the outer periphery of one end of the handle along the handle axis, and a mounting groove is provided at the other end of the handle. The connecting post is embedded in the mounting groove, and the outer periphery of the connecting post is provided with an external thread, which is threadedly connected to the wall of the mounting groove.

[0018] By adopting the above technical solution, the handle is threadedly connected to the connecting column, and the outer periphery of the handle is equipped with a lifting ring, which allows the operator to slide the handle by lifting the ring, thereby causing the limiting column to slide, realizing the circumferential fixing or releasing of the gear and boss, and improving the convenience of clamp operation.

[0019] Preferably, the horizontal positioning component further includes a reset member, and a groove is provided on the hole wall near one end of the guide groove of the connecting hole. The reset member is embedded in the groove and is connected between the support base and the limiting post. The reset member causes the limiting post to tend to approach the boss.

[0020] By adopting the above technical solution, when no external force pulls the limiting post, the limiting post slides close to the boss under the action of the elastic force of the reset part, reducing the possibility that the limiting post will disengage from the tooth groove on the outer circumference of the gear due to vibration during processing, and improving the reliability of the fixture.

[0021] Preferably, there are a plurality of protrusions, which are distributed at intervals along the horizontal direction, and the number of the support base, the horizontal positioning component and the vertical positioning component is the same as the number of protrusions and corresponds one-to-one.

[0022] By adopting the above technical solution, multiple gears can be clamped simultaneously, so that gears on other bosses can be loaded and unloaded while other gears are being processed, thereby improving work efficiency.

[0023] Preferably, a first groove is provided on the wall of the first mounting hole at the end away from the base, the first groove being used for the head of the bolt to be inserted, and a convex ring is connected to the end of the boss away from the base, the convex ring being used to abut against the side of the gear near the boss.

[0024] By adopting the above technical solution and setting the first groove, the head of the bolt is embedded in the first groove, which helps to keep the surface of the boss away from the base level, reduce interference with the placement of the gear, and the convex ring abuts against the gear, reducing the contact area between the boss and the gear, reducing the possibility of uneven gear end face leading to unstable connection between the gear and the boss, and improving the reliability of the fixture.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The frame is used to place the gear. The vertical positioning component abuts against the side of the gear away from the frame to fix the gear and the frame relatively in the vertical direction. The horizontal positioning component is embedded in the tooth groove on the outer circumference of the gear to fix the gear and the frame relatively in the horizontal direction. This reduces the possibility of the gear moving relative to the frame during gear processing and improves the reliability of the fixture.

[0027] 2. The side wall of the positioning post fits against the wall of the gear through hole, so that the gear and the boss are relatively fixed in the horizontal direction. After the fixing bolt passes through the connecting hole, it is threaded to the positioning post, so that the abutment plate presses against the side of the gear away from the boss, so that the gear and the boss are relatively fixed in the vertical direction. This makes it easy to tighten the fixing bolt, so as to place and remove the gear and improve the convenience of the fixture.

[0028] 3. The guide groove wall fits snugly against the side wall of the limiting post. The guide groove guides the sliding of the limiting post. One end of the connecting post passes through the connecting hole and extends out of the support seat, facilitating the sliding of the limiting post through the connecting post. One end of the limiting post is embedded in the tooth groove on the outer circumference of the gear, achieving circumferential fixation of the gear and the boss, reducing the possibility of the gear rotating relative to the boss during processing. When no external force pulls the limiting post, the limiting post slides close to the boss under the action of the elastic force of the reset part, reducing the possibility of the limiting post disengaging from the tooth groove on the outer circumference of the gear due to vibration during processing, and improving the reliability of the fixture. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a gear machining fixture.

[0030] Figure 2 This is a partial sectional view of the gear machining fixture, mainly showing the third mounting hole, the third groove, and the third fixing hole.

[0031] Figure 3 This is a partial sectional view of a gear machining fixture, mainly showing the first mounting hole, the first groove, the first fixing hole, the second mounting hole, and the second fixing hole.

[0032] Figure 4 This is an exploded structural diagram of the boss and vertical positioning components.

[0033] Figure 5This is a sectional view of a gear machining fixture.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Frame; 11. Base; 111. Vertical plate; 1111. Third fixing hole; 112. Mounting plate; 1121. First fixing hole; 1122. Second fixing hole; 1123. Third mounting hole; 1124. Third groove; 12. Boss; 121. First mounting hole; 122. Positioning post; 123. First groove; 124. Protruding ring; 13. Support base; 131. Base body; 1311. Guide groove; 132. Connecting block; 1321. Second mounting hole; 133. Protrusion; 1331. Connecting hole; 1332. Groove;

[0036] 2. Horizontal positioning assembly; 21. Limiting post; 211. Connecting post; 212. External thread; 22. Handle; 221. Lifting ring; 222. Mounting groove; 23. Reset component;

[0037] 3. Vertical positioning component; 31. Abutment plate; 311. Connecting hole; 312. Connecting groove; 32. Fixing bolt. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] Reference Figure 1 This application discloses a gear processing fixture including a frame 1, the frame 1 including a base 11, the base 11 including a mounting plate 112 and upright plates 111, one end of the upright plate 111 abutting against one side surface of the mounting plate 112 along the thickness direction of the mounting plate 112. Two upright plates 111 are provided, symmetrically distributed along the length direction of the mounting plate 112. The side surface of the upright plate 111 away from the other upright plate 111 is flush with one end of the mounting plate 112 along the length direction of the mounting plate 112, and the two side surfaces of the upright plates along the width direction of the mounting plate 112 are flush with both ends of the mounting plate 112 along the width direction of the mounting plate 112.

[0040] Reference Figure 2The upright plate 111 has a third fixing hole 1111 at one end near the mounting plate 112. Several third fixing holes 1111 are provided, spaced apart along the width direction of the mounting plate 112. In this embodiment, four third fixing holes 1111 are provided, evenly distributed along the width direction of the mounting plate 112. The mounting plate 112 has third mounting holes 1123 that penetrate the mounting plate 112 along its thickness direction. The number of third mounting holes 1123 is the same as the number of third fixing holes 1111, and they correspond one-to-one. The third mounting holes 1123 are used for bolts to pass through and be threaded into the third fixing holes 1111. A third groove 1124 is provided on the wall of the third mounting hole 1123 at the end away from the upright, for the head of the bolt to be inserted.

[0041] Reference Figure 1 and Figure 3 The frame 1 also includes a boss 12, one end of which abuts against the side surface of the mounting plate 112 away from the vertical plate 111, and the other end of the boss 12 away from the mounting plate 112 is used for gear placement. Several bosses 12 are provided, spaced apart along the length of the mounting plate 112. In this embodiment, three bosses 12 are provided, evenly distributed along the length of the mounting plate 112. Several first fixing holes 1121 are provided on the side surface of the mounting plate 112 away from the vertical plate 111, divided into three groups, each group corresponding to one of the three bosses 12. In this embodiment, nine first fixing holes 1121 are provided, with three first fixing holes 1121 in the same group evenly distributed circumferentially around the axis of the boss 12. The boss 12 is provided with a first mounting hole 121, which penetrates the boss 12 along the axis of the boss 12. The number of first mounting holes 121 is the same as the number of first fixing holes 1121 and they correspond one-to-one. The first mounting hole 121 is used for bolts to pass through and be threaded into the first fixing hole 1121. A first groove 123 is provided on the hole wall of the first mounting hole 121 at the end away from the mounting plate 112. The first groove 123 is used for the head of the bolt to be inserted.

[0042] Reference Figure 1 and Figure 4 A gear processing fixture also includes a vertical positioning component 3, the number of which is the same as the number of bosses 12 and corresponds one-to-one.

[0043] Reference Figure 4 and Figure 5A protruding ring 124 is coaxially fixedly connected to the end of the boss 12 away from the mounting plate 112. The protruding ring 124 is used to abut against the side surface of the boss 12 placed above the mounting plate 112. A positioning post 122 is coaxially fixedly connected to the end of the boss 12 away from the mounting plate 112. The outer wall of the positioning post 122 is used to fit against the wall of the through hole of the gear placed above the boss 12. The vertical positioning assembly 3 includes an abutting plate 31 and a fixing bolt 32. The abutting plate 31 is connected to the end of the positioning post 122 away from the mounting plate 112, and the side surface of the abutting plate 31 near the mounting plate 112 abuts against the side surface of the gear away from the protruding ring 124. The abutment plate 31 is coaxially provided with a connecting hole 311, which penetrates the abutment plate 31 along its axis. The shank of the fixing bolt 32 passes through the connecting hole 311 and is threadedly connected to the end of the positioning post 122 away from the mounting plate 112. The head of the fixing bolt 32 abuts against the surface of the abutment plate 31 away from the mounting plate 112. A connecting groove 312 is provided in the wall of the connecting hole 311, which penetrates the abutment plate 31 along a direction perpendicular to the axis of the abutment plate 31. The two sides of the groove are parallel to each other, and the distance between the two sides of the groove is not less than the outer diameter of the shank of the fixing bolt 32. In this embodiment, the distance between the two sides of the groove is equal to the outer diameter of the shank of the fixing bolt 32.

[0044] Reference Figure 1 and Figure 3 The frame 1 also includes support bases 13, the number of which is the same as the number of bosses 12 and corresponds one-to-one. Each support base 13 includes a base body 131, a connecting block 132, and a boss 133. One end of the base body 131 abuts against the side surface of the mounting plate 112 near the boss 12. One end of the connecting block 132 is fixedly connected to the side surface of the base body 131 along the length of the mounting plate 112. The side surface of the connecting block 132 near the mounting plate 112 is in contact with the side surface of the mounting plate 112 near the boss 12. There are two connecting blocks 132, symmetrically distributed along the length of the mounting plate 112. Each connecting block 132 has a second mounting hole 1321. The side surface of the mounting plate 112 near the boss 12 has a second fixing hole 1122, the number of which is the same as the number of the second mounting holes 1321 and corresponds one-to-one. The second mounting holes 1321 are used for bolts to pass through and be threaded into the second fixing holes 1122. One end of the protrusion 133 is fixedly connected to the side surface of the seat 131 away from the protrusion 12.

[0045] Reference Figure 3 and Figure 5 The protrusion 133 is cylindrical, and the axis of the protrusion 133 is coplanar with the axis of the corresponding boss 12.

[0046] Reference Figure 1 and Figure 5A gear machining fixture further includes horizontal positioning components 2, the number of which is the same as the number of support seats 13 and corresponds one-to-one. The horizontal positioning components 2 include limiting posts 21 and resetting members 23. The seat body 131 is provided with a guide groove 1311, which passes through the seat body 131 along the axis of the protrusion 133, and the axis of the guide groove 1311 is collinear with the axis of the protrusion 12. The end of the limiting post 21 away from the protrusion 12 is coaxially slidably embedded in the guide groove 1311, and the side wall of the limiting post 21 is in contact with the groove wall of the guide groove 1311. The other end of the limiting post 21 is tapered, and the end of the limiting post 21 near the protrusion 12 is used to embed into the tooth groove on the outer circumference of the gear. The end of the protrusion 133 near the seat body 131 is coaxially provided with a groove 1332, the diameter of which is smaller than the diameter of the guide groove 1311. The reset member 23 is connected between the protrusion 133 and the limiting post 21, and the reset member 23 causes the limiting post 21 to tend to move closer to the protrusion 12. In this embodiment, the reset member 23 is a spring, one end of the reset member 23 is connected to the end of the limiting post 21 away from the protrusion 12, and the other end of the reset member 23 is connected to the bottom of the groove 1332.

[0047] Reference Figure 5 The groove 1332 has a coaxially connected connecting hole 1331 at its bottom, which passes through the protrusion 133 along its axis. A connecting post 211 is coaxially fixedly connected to the end of the limiting post 21 away from the boss 12. The end of the connecting post 211 away from the limiting post 21 passes through the connecting hole 1331 and extends out of the protrusion 133. The horizontal positioning assembly 2 also includes a handle 22, one end of which has a mounting groove 222. The end of the connecting post 211 away from the limiting post 21 is embedded in the mounting groove 222. The diameter of the handle 22 near the protrusion 133 is larger than the diameter of the connecting hole 1331. The connecting post 211 has an external thread 212 on its outer periphery, which is threadedly connected to the wall of the mounting groove 222. A lifting ring 221 is coaxially fixedly connected to the outer periphery of the handle 22 away from the protrusion 133.

[0048] The implementation principle of a gear processing fixture according to an embodiment of this application is as follows: A corresponding boss 12 is selected as needed and placed on a mounting plate 112. The first mounting hole 121 and the first fixing hole 1121 are aligned. A bolt passes through the first mounting hole 121 and is threaded into the first fixing hole 1121, with the bolt head abutting against the bottom of the first groove 123. The gear is then fitted onto the outer circumference of the positioning post 122. A fixing bolt 32 is passed through and threaded into the positioning post 122, causing the abutment plate 31 to abut against the side of the gear away from the boss 12.

[0049] When the gear needs to be rotated, pull the lever 22 to drive the connecting post 211 to slide, which in turn causes the limiting post 21 to overcome the elastic force of the reset piece 23 and disengage from the tooth groove on the outer circumference of the gear. After rotating the gear by a certain angle, release the lever 22. Under the action of the elastic force of the reset piece 23, the limiting post 21 is re-embedded into the tooth groove on the outer circumference of the gear, thus achieving circumferential fixation of the gear and the boss 12.

[0050] When the gear needs to be removed, rotate the fixing bolt 32 to create a gap between the head of the fixing bolt 32 and the abutment plate 31. Move the abutment plate 31 horizontally so that the rod of the fixing bolt 32 slides out of the connecting hole 311 along the connecting groove 312, thereby releasing the relative fixation between the gear and the boss 12 in the vertical direction.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gear machining fixture, characterized in that: It includes a frame (1), a horizontal positioning component (2) and a vertical positioning component (3); the upper end of the frame (1) is used for placing the gear; the horizontal positioning component (2) is connected to the frame (1); the horizontal positioning component (2) is used to be embedded in the tooth groove on the outer periphery of the gear; the vertical positioning component (3) is connected to the frame (1); the vertical positioning component (3) is used to abut against the side of the gear away from the frame (1).

2. The gear machining fixture according to claim 1, characterized in that: The frame (1) includes a base (11), a boss (12), and a support (13); the boss (12) is connected to the upper end of the base (11); the upper end of the boss (12) is used for placing gears; the base (11) is provided with a first fixing hole (1121); the boss (12) is provided with a first mounting hole (121); the first mounting hole (121) is used for bolts to pass through and be threadedly connected to the first fixing hole (1121); the support (13) is connected to the base (11); the horizontal positioning component (2) is connected to the support (13); the base (11) is provided with a second fixing hole (1122); the support (13) is provided with a second mounting hole (1321); the second mounting hole (1321) is used for bolts to pass through and be threadedly connected to the second fixing hole (1122).

3. The gear machining fixture according to claim 2, characterized in that: The boss (12) is connected to a positioning post (122) at one end away from the frame (1); the side wall of the positioning post (122) is in contact with the wall of the gear through hole; the vertical positioning assembly (3) includes an abutment plate (31) and a fixing bolt (32); the abutment plate (31) is slidably connected to the positioning post (122); the abutment plate (31) is used to abut against the side of the gear away from the boss (12); the abutment plate (31) is provided with a connecting hole (311); the rod of the fixing bolt (32) passes through the connecting hole (311) and is threadedly connected to the positioning post (122).

4. The gear machining fixture according to claim 3, characterized in that: The connecting hole (311) has a connecting groove (312) on its wall; the connecting groove (312) passes through the abutment plate (31) in a direction perpendicular to the axis of the connecting hole (311); the distance between the two sides of the groove wall of the connecting groove (312) is not less than the outer diameter of the rod of the fixing bolt (32).

5. The gear machining fixture according to claim 2, characterized in that: The horizontal positioning component (2) includes a limiting post (21); the support base (13) has a guide groove (1311) on the side near the boss (12); one end of the limiting post (21) is coaxially slidably embedded in the guide groove (1311); the side wall of the limiting post (21) is in contact with the groove wall of the guide groove (1311); the other end of the limiting post (21) is used to be embedded in the tooth groove on the outer circumference of the gear; the bottom of the guide groove (1311) is provided with a connecting hole (1331); the end of the limiting post (21) away from the boss (12) is connected to a connecting post (211); the connecting post (211) extends out of the support base (13) after passing through the connecting hole (1331).

6. The gear machining fixture according to claim 5, characterized in that: The horizontal positioning component (2) also includes a handle (22); a lifting ring (221) is connected to the outer periphery of one end of the handle (22) along the axial direction of the handle (22); the other end of the handle (22) is provided with a mounting groove (222); the connecting post (211) is embedded in the mounting groove (222); the outer periphery of the connecting post (211) is provided with an external thread (212); the external thread (212) is threadedly connected to the groove wall of the mounting groove (222).

7. The gear machining fixture according to claim 5, characterized in that: The horizontal positioning component (2) also includes a reset component (23); the connecting hole (1331) has a groove (1332) on the hole wall near the guide groove (1311); the reset component (23) is embedded in the groove (1332); the reset component (23) is connected between the support base (13) and the limiting post (21); the reset component (23) makes the limiting post (21) tend to approach the boss (12).

8. The gear machining fixture according to claim 2, characterized in that: The boss (12) is provided in a plurality of manner; the plurality of bosses (12) are distributed at intervals along the horizontal direction; the number of the support base (13), the horizontal positioning component (2) and the vertical positioning component (3) is the same as the number of bosses (12) and they correspond one to one.

9. The gear machining fixture according to claim 2, characterized in that: The first mounting hole (121) has a first groove (123) on the hole wall at the end away from the base (11); the first groove (123) is used for the head of the bolt to be inserted; the boss (12) is connected to a protruding ring (124) at the end away from the base (11); the protruding ring (124) is used to abut against the side of the gear near the boss (12).

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