A trident shaft product indexing processing tool

Abstract

The application discloses a kind of index processing frock of trifid axle product, including frock seat, lower pressing mechanism and index mechanism, frock seat is opened with processing cavity in front, lower pressing mechanism includes rotatably installed pressing column, index mechanism includes rotatably installed support column, pressing column and support column are all located in processing cavity, pressing column can move towards support column direction, to hold fixed trifid axle product between pressing column and support column, index mechanism further includes index disc and index drive assembly, index disc is fixedly connected with support column, index disc and index drive assembly are drivingly connected, this frock can effectively hold trifid axle product, the fixed-angle rotation of trifid axle product can be realized by operating index mechanism, this frock has the advantages of low modification cost, simple operation, can well satisfy the lathe processing needs of trifid axle product.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for machining parts, and more specifically, to an indexing tooling for a three-pronged shaft product. Background Technology

[0002] like Figure 7 The image shows an irregularly shaped automotive part, characterized by a central shaft core 41 around which three forks 42 are evenly distributed. Given this shape, the part is named a three-fork shaft. The die-cast three-fork shaft is only a blank; the three forks 42 require precision machining on a lathe. Since each of the three forks 42 needs to be machined individually, the machining process involves the product's rotation at a fixed angle. Currently, companies use hydraulic indexing chucks on traditional machine tools to address this issue. However, hydraulic chucks have drawbacks, including high modification costs, occasional oil leaks, and difficult maintenance. Therefore, designing a user-friendly, low-cost mechanical tooling is a pressing need for the company, leading to this project. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an indexing machining fixture for three-pronged shaft products. This fixture can effectively clamp the three-pronged shaft products, and the fixed-angle rotation of the three-pronged shaft products can be achieved by controlling the indexing mechanism. This fixture has the advantages of low modification cost and simple operation, and can well meet the machining needs of three-pronged shaft products.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A three-pronged shaft product indexing fixture includes a fixture base, a pressing mechanism, and an indexing mechanism. The fixture base has a machining cavity on its front side. The pressing mechanism includes a rotatably mounted pressing column, and the indexing mechanism includes a rotatably mounted support column. Both the pressing column and the support column are located within the machining cavity. The pressing column can move towards the support column to clamp and fix the three-pronged shaft product between the pressing column and the support column. The indexing mechanism also includes an indexing plate and an indexing drive assembly. The indexing plate is fixedly connected to the support column, and the indexing plate and the indexing drive assembly are kinetically connected. The indexing drive assembly can drive the indexing plate and the support column to rotate, and can also maintain the existing angle state of the indexing plate and the support column.

[0006] Furthermore, the pressing mechanism also includes a clamping bolt and a first spring. The tooling base has a bolt hole that is connected to the machining cavity. The clamping bolt is threaded into the bolt hole. One end of the clamping bolt extends into the machining cavity and is rotatably connected to a pressing column. The first spring is installed in the bolt hole, and the clamping bolt presses against the first spring.

[0007] Furthermore, the tooling base is provided with an indexer mounting slot, and the indexing mechanism also includes an indexing box, which is fixedly installed in the indexer mounting slot. One end of the support column extends through into the indexing box and is connected to an indexing plate. The indexing drive assembly includes a sector disk and a rotating shaft. The sector disk is rotatably installed in the indexing box. The indexing plate has three evenly distributed drive slots, one side of which is open. A linkage rod is fixedly connected to the sector disk, and a drive column is vertically installed on the linkage rod. The rotating shaft has a splined section and is splinedly connected to the sector disk. By driving the rotating shaft, the sector disk and the drive column can be driven to rotate. During rotation, the drive column can enter the drive slot of the indexing plate to drive the indexing plate to rotate.

[0008] Furthermore, the sector-shaped disk is provided with a sector-shaped arc, and the indexing disk is provided with three evenly distributed positioning arcs. Each positioning arc is located between two adjacent drive slots. The size of the sector-shaped arc matches the positioning arc. During the rotation of the sector-shaped disk, the sector-shaped arc can come into contact with one of the positioning arcs. When the sector-shaped arc comes into contact with the positioning arc, the indexing disk remains stationary. During the rotation of the indexing disk by the drive column, the sector-shaped arc does not come into contact with any of the positioning arcs.

[0009] Furthermore, one end of the rotating shaft extends to the outside of the tooling base and is fixedly connected to a screw head. A pointer is connected to the outer wall of the screw head, and a rotation indicator is engraved on the outer wall of the tooling base. The rotation indicator is engraved on the outside of the pointer's movement trajectory line.

[0010] Furthermore, the indexing mechanism also includes a locking assembly, which includes a spring box and a locking sleeve. The spring box is fixedly installed inside the machining cavity, and a second spring is installed inside the spring box. The locking sleeve is fixedly installed inside the indexing box. One end of the rotating shaft passes through the locking sleeve and extends into the spring box, and is connected to a spring pressure plate. The spring pressure plate presses against the second spring. The locking sleeve has a splined inner hole. When the rotating shaft is only subjected to the elastic force of the second spring, the splined section of the rotating shaft can be inserted into the splined inner hole. When the rotating shaft is subjected to a pulling force in the direction of the tooling seat outward, the splined section of the rotating shaft can disengage from the splined inner hole.

[0011] Furthermore, a docking seat is connected to the back of the tooling base.

[0012] The beneficial effects of this invention are:

[0013] 1. This invention achieves clamping and fixing of the three-pronged shaft product by pressing the column and supporting column, and achieves fixed-angle rotation of the three-pronged shaft product by controlling the indexing mechanism. At the same time, the indexing mechanism can also maintain the existing angle state after angle adjustment to meet the machining requirements of the three-pronged shaft product.

[0014] 2. This invention adopts a mechanical structure design, which has a low modification cost. The clamping and fixing and indexing mechanism of the three-pronged shaft product is also relatively simple to operate, which has the advantage of being easy to operate. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the indexing tooling for a three-pronged shaft product in this embodiment;

[0016] Figure 2 This is a side view of the indexing tooling for a three-pronged shaft product in this embodiment.

[0017] Figure 3 This is a cross-sectional view of the mounting structure of the pressing mechanism and the indexing mechanism on the tooling base in this embodiment;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0019] Figure 5 This is a top view of the transmission state of the indexing drive assembly and the indexing plate in this embodiment;

[0020] Figure 6 for Figure 3 View B in the middle;

[0021] Figure 7 This is a structural diagram of the three-pronged shaft product.

[0022] Reference numerals: Tooling base 1, Machining cavity 11, Indexer mounting slot 12, Bolt hole 13, Rotation indicator 14, Connecting seat 15, Pressing mechanism 2, Pressing column 21, Clamping bolt 22, First spring 23, Indexing mechanism 3, Support column 31, Indexing box 32, Indexing plate 33, Drive groove 331, Positioning arc 332, Indexing drive assembly 34, Sector plate 341, Sector arc 3411, Linkage rod 342, Drive column 343, Rotating shaft 344, Spline section 3441, Spring pressure plate 3442, Twisting head 345, Pointer 3451, Locking assembly 35, Spring box 351, Second spring 352, Locking sleeve 353, Spline inner hole 3531, Shaft core 41, Fork head 42. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-6 The illustrated indexing fixture for a three-pronged shaft product is used in the machining of three-pronged shaft products, such as... Figure 7 As shown, this three-fork shaft product has three evenly distributed fork heads 42. Each of the three evenly distributed fork heads 42 needs to be machined individually. A three-fork shaft product indexing tooling includes a tooling base 1, a pressing mechanism 2, and an indexing mechanism 3. The tooling base 1 has a machining cavity 11 on its front side. The pressing mechanism 2 includes a rotatably mounted pressing column 21, and the indexing mechanism 3 includes a rotatably mounted support column 31. Both the pressing column 21 and the support column 31 are located within the machining cavity 11. The pressing column 21 can move towards the support column 31 to clamp and fix the three-fork shaft product between the pressing column 21 and the support column 31. Figure 7 As shown, the three-pronged shaft product has a shaft core 41 in the middle. The pressing column 21 and the support column 31 can abut against the shaft core 41 to form a clamping effect (the contact ends of the pressing column 21 and the support column 31 match the size of the shaft core 41). After the three-pronged shaft product is clamped and fixed, this tooling is driven to rotate at high speed. The lathe tool extends into the machining cavity 11 to perform machining operations on one of the forks 42 of the three-pronged shaft product. The indexing mechanism 3 also includes an indexing plate 33 and an indexing drive assembly 34. The indexing plate 33 is fixedly connected to the support column 31. The indexing plate 33 can drive the support column 31 to rotate, thereby realizing the reversing operation of the three-pronged shaft product. The indexing plate 33 and the indexing drive assembly 34 are connected by a transmission. The indexing drive assembly 34 can drive the support column 31 to rotate. The indexing plate 33 and the support column 31 are driven to rotate. Since the pressing column 21 rotates, it only forms a clamping effect. Therefore, when the support column 31 rotates, the three-pronged shaft product can change its angle to achieve the purpose of reversing direction. The drive of the indexing plate 33 needs to be carried out after the previous fork 42 has been machined. The indexing plate 33 rotates 120 degrees each time it is driven, so that the next fork 42 can be directly facing the tool after it rotates. After the fork 42 is rotated into place, it is necessary to maintain the existing angle position of the fork 42 so that the machining operation can be carried out. This angle maintenance requires the indexing plate 33 to stop rotating. The indexing drive assembly 34 can also maintain the existing angle state of the indexing plate 33 and the support column 31 to meet the machining requirements.

[0025] like Figure 3As shown, the pressing mechanism 2 also includes a clamping bolt 22 and a first spring 23. A bolt hole 13 is provided on the tooling base 1, which is connected to the machining cavity 11. The clamping bolt 22 is threaded into the bolt hole 13, with one end extending into the machining cavity 11 and rotatably connected to a pressing column 21. The first spring 23 is installed in the bolt hole 13, and the clamping bolt 22 presses against the first spring 23. The clamping bolt 22 is an internal hex bolt, tightened using a special tool. When the clamping bolt 22 is tightened towards the machining cavity 11, it drives the pressing column 21 to move towards the support column 31, thus forming a clamp. The effect of holding the three-pronged shaft product is that the first spring 23 is compressed at this time. Due to the rotation of the pressing column 21, the clamping state does not affect the reversing rotation operation of the three-pronged shaft product. Affected by the restoring force of the first spring 23, when the clamping bolt 22 is turned outward towards the outside of the tooling seat 1, the pressing column 21 can be quickly lifted to achieve the quick release of the clamping effect. Under the above design of the pressing mechanism 2, the clamping and disassembly operation of the three-pronged shaft product is very convenient. Before clamping each three-pronged shaft product, it is necessary to set the tool once and then clamp it. After clamping, all three forks 42 need to be machined before the clamping is released.

[0026] like Figure 3 As shown, the tooling base 1 has an indexer mounting slot 12. The indexing mechanism 3 also includes an indexing box 32, which is fixedly installed in the indexer mounting slot 12. The front of the indexing box 32 is designed to be openable for easy assembly and maintenance of parts. One end of the support column 31 extends through into the indexing box 32 and is connected to the indexing plate 33. The indexing drive assembly 34 includes a sector disk 341 and a rotating shaft 344. The sector disk 341 is rotatably installed in the indexing box 32. The indexing plate 33 has three evenly distributed drive grooves 331, one side of which is open to facilitate the entry of the drive components. A linkage rod 342 is fixedly connected to the sector disk 341. A drive column 343 is vertically installed on the linkage rod 342. The rotating shaft 344 has a spline section 3441. Shaft 344 is splinedly connected to sector disk 341. Drive shaft 344 to drive sector disk 341 to rotate. Since linkage rod 342 is fixedly connected to sector disk 341, drive column 343 also rotates. During rotation, drive column 343 can enter drive groove 331 of indexing disk 33. With the planar rotation of drive column 343, drive column 343 can enter and exit drive groove 331 once, and at the same time drive indexing disk 33 to rotate by an angle. Since the three drive grooves 331 are evenly distributed at 120 degrees, this angle is exactly 120 degrees. In the case of three-fork shaft products, this means changing the direction from one fork 42 facing the tool to the next fork 42 facing the tool, which can meet the interchange operation requirements of fork 42.

[0027] like Figure 5As shown, the sector-shaped disk 341 has a sector-shaped arc 3411, and the indexing disk 33 has three evenly distributed positioning arcs 332. Each positioning arc 332 is located between two adjacent drive slots 331. The size of the sector-shaped arc 3411 matches that of the positioning arc 332. During the rotation of the sector-shaped disk 341, the sector-shaped arc 3411 can come into contact with one of the positioning arcs 332. When the sector-shaped arc 3411 and the positioning arc 332 are in contact, the indexing disk 33 is not driven, and because the sector-shaped arc 3411 and the positioning arc 332 are in close contact, the indexing disk 33 cannot rotate. Therefore, the indexing disk 33 and the support column 31 can maintain their positions. When the fork head 42 is stationary, machining operations can be performed (the fork head 42 must remain stationary during machining to prevent machining accidents). However, when the three-pronged shaft product changes direction, the indexing plate 33 and the support column 31 need to rotate. Therefore, the sector arc 3411 is only a section of arc surface. As the sector plate 341 rotates, the sector arc 3411 will disengage from the positioning arc 332. When the drive column 343 enters the drive groove 331 and the indexing plate 33 rotates, the sector arc 3411 will not contact any of the positioning arcs 332 to prevent motion interference and motion failure.

[0028] like Figure 3 and Figure 6 As shown, one end of the rotating shaft 344 extends to the outside of the tooling base 1 and is fixedly connected to a screw head 345. The screw head 345 acts as an assist, and turning the screw head 345 can drive the rotating shaft 344 to rotate. A pointer 3451 is connected to the outer wall of the screw head 345. A rotation indicator 14 is engraved on the outer wall of the tooling base 1. The rotation indicator 14 is engraved on the outside of the movement trajectory line of the pointer 3451. In the initial state of the indexing mechanism 3, the pointer 3451 is directly facing the rotation indicator 14, and the fan-shaped arc 3411 is in contact with the positioning arc 332. The indexing plate 33 and the support column 31 remain stationary, and the initial assembly of the three-pronged shaft product can be performed. After the machining of the first fork 42 is completed, the turning head 345 is turned so that the pointer 3451 is aligned with the rotating indicator 14 again. This completes one full rotation of the rotating shaft 344, and the indexing plate 33 and the support column 31 rotate 120 degrees, aligning the next fork 42 with the cutting tool. At this time, the indexing plate 33 and the support column 31 remain stationary, which meets the machining requirements of the fork 42. In this invention, each indexing adjustment only requires one full rotation of the turning head 345, and the adjusted angle can be automatically maintained, which has the advantages of simple and convenient operation.

[0029] In this invention, the rotating shaft 344 is rotatably mounted. If not restrained, accidental rotation may occur. Accidental rotation of the rotating shaft 344 would cause the sector disc 341 to rotate, potentially affecting the holding of the fork 42. Therefore, this invention also includes a locking component 35 on the indexing mechanism 3. Figure 3and Figure 4 As shown, the locking assembly 35 includes a spring box 351 and a locking sleeve 353. The spring box 351 is fixedly installed inside the machining cavity 11, and a second spring 352 is installed inside the spring box 351. The locking sleeve 353 is fixedly installed inside the indexing box 32. One end of the rotating shaft 344 passes through the locking sleeve 353 and extends into the spring box 351, where it is connected to a spring pressure plate 3442. The spring pressure plate 3442 only presses against the second spring 352 and is not connected to it, thus not affecting the rotation of the rotating shaft 344. Under the elastic force of the second spring 352, the rotating shaft 344 is pulled towards the machining cavity 11. The locking sleeve 353 has a splined inner hole 3531, which allows the rotating shaft 344 to be pulled only by the second spring 352. When the second spring 352 is in force, the splined section 3441 of the rotating shaft 344 can be inserted into the splined inner hole 3531. Since the locking sleeve 353 is fixed, the rotating shaft 344 is also fixed at this time and cannot rotate, forming a position locking effect between the sector disk 341 and the fork head 42. When it is necessary to operate and replace the fork head 42, the rotating shaft 344 is pulled outward. When the rotating shaft 344 is subjected to a pulling force in the direction of the tooling seat 1, the splined section 3441 of the rotating shaft 344 can disengage from the splined inner hole 3531. At this time, the rotating shaft 344 can be unlocked and can rotate freely, which can meet the needs of driving the sector disk 341. The above design of the present invention can reduce the failure phenomenon in practical applications.

[0030] like Figure 2 As shown, a docking seat 15 is connected to the back of the tooling seat 1. The docking seat 15 is used to dock with the main spindle of the existing machine tool. The present invention adopts a mechanical structure design, which has the advantages of low modification cost, convenient modification and low failure rate.

[0031] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A type of indexing tooling for a three-pronged shaft product, characterized in that, The device includes a tooling base (1), a pressing mechanism (2), and an indexing mechanism (3). The tooling base (1) has a machining cavity (11) on its front side. The pressing mechanism (2) includes a rotatably mounted pressing column (21). The indexing mechanism (3) includes a rotatably mounted support column (31). Both the pressing column (21) and the support column (31) are located inside the machining cavity (11). The pressing column (21) can move towards the support column (31) to clamp and fix the three-pronged shaft product between the pressing column (21) and the support column (31). The indexing mechanism (3) also includes an indexing plate (33) and an indexing drive assembly (34). The indexing plate (33) is fixedly connected to the support column (31). The transmission connection allows the indexing disk (33) and support column (31) to rotate via the indexing drive assembly (34). The indexing drive assembly (34) also maintains the existing angle state of the indexing disk (33) and support column (31). The tooling base (1) has an indexer mounting slot (12). The indexing mechanism (3) also includes an indexing box (32), which is fixedly installed in the indexer mounting slot (12). One end of the support column (31) extends through into the indexing box (32) and is connected to the indexing disk (33). The indexing drive assembly (34) includes a sector disk (341) and a rotating shaft (344). The sector disk (341) is rotatably installed in the indexing box (32). The indexing disk (33)... The disk has three evenly distributed drive grooves (331), each open on one side. A linkage rod (342) is fixedly connected to the sector disk (341), and a drive column (343) is vertically mounted on the linkage rod (342). The rotating shaft (344) has a spline section (3441) and is splinedly connected to the sector disk (341). By driving the rotating shaft (344), the sector disk (341) and the drive column (343) can be rotated. During rotation, the drive column (343) can enter the drive groove (331) of the indexing disk (33) to drive the indexing disk (33) to rotate. The sector disk (341) has a sector arc (3411), and the indexing disk (33) has three evenly distributed drive grooves (3311). A number of evenly distributed positioning arcs (332) are provided, each of which is located between two adjacent drive slots (331). The size of the fan-shaped arc (3411) matches that of the positioning arc (332). During the rotation of the fan-shaped disk (341), the fan-shaped arc (3411) can come into contact with one of the positioning arcs (332). When the fan-shaped arc (3411) comes into contact with the positioning arc (332), the indexing disk (33) remains stationary. During the rotation of the indexing disk (33) by the drive column (343), the fan-shaped arc (3411) does not come into contact with any of the positioning arcs (332). One end of the rotating shaft (344) extends to the outside of the tooling seat (1) and is fixedly connected to a screw head (345).A pointer (3451) is connected to the outer wall of the screw head (345), and a rotation indicator (14) is engraved on the outer wall of the tooling base (1). The rotation indicator (14) is engraved on the outer side of the movement trajectory line of the pointer (3451). The indexing mechanism (3) also includes a locking assembly (35), which includes a spring box (351) and a locking sleeve (353). The spring box (351) is fixedly installed in the machining cavity (11), and a second spring (352) is installed in the spring box (351). The locking sleeve (353) is fixedly installed in the indexing box (32). The rotating shaft (344) One end extends through the locking sleeve (353) and into the spring box (351), where it is connected to a spring pressure plate (3442). The spring pressure plate (3442) presses against the second spring (352). The locking sleeve (353) has a splined inner hole (3531). When the shaft (344) is only subjected to the elastic force of the second spring (352), the splined section (3441) of the shaft (344) can be inserted into the splined inner hole (3531). When the shaft (344) is subjected to a pulling force in the direction outward from the tooling seat (1), the splined section (3441) of the shaft (344) can disengage from the splined inner hole (3531).

2. The indexing tooling for a three-pronged shaft product according to claim 1, characterized in that, The pressing mechanism (2) further includes a clamping bolt (22) and a first spring (23). The tooling base (1) has a bolt hole (13) connected to the processing cavity (11). The clamping bolt (22) is threaded in the bolt hole (13). One end of the clamping bolt (22) extends into the processing cavity (11) and is rotatably connected to a pressing column (21). The first spring (23) is installed in the bolt hole (13). The clamping bolt (22) presses against the first spring (23).

3. The indexing tooling for a three-pronged shaft product according to claim 1, characterized in that, The back of the tooling base (1) is connected to a docking seat (15).

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