A tooling fixture for disc-like ring-like workpieces

Abstract

The application relates to a tool clamp for disc and ring workpieces and relates to the technical field of tool clamps. The tool clamp comprises a working platform, a driving disc rotatably arranged in the working platform, a supporting and clamping assembly arranged on the surface of the driving disc, a rotating shaft rotatably arranged on the side wall of the working platform, and an inner supporting assembly arranged at the end of the rotating shaft. The inner supporting assembly and the supporting and clamping assembly are arranged, the rotating shaft is used as a unified power source, the workpiece is subjected to more uniform stress through the limiting mode of first inner supporting and then outer clamping, the clamping and extrusion deformation problem caused by simple outer clamping is avoided, the workpiece form is maintained, the roundness of the inner and outer circles of the workpiece is ensured, the overall stability of the ring workpiece in the machining process is enhanced, the bottom of the workpiece is supported by the supporting column, a stable supporting foundation is built for the workpiece, unnecessary deformation of the workpiece during machining is prevented, and the clamping steps are simplified and the operation preparation time is shortened.

Description

Technical Field

[0001] This invention relates to the field of tooling and fixture technology, specifically to a tooling and fixture for disc-shaped and ring-shaped workpieces. Background Technology

[0002] In the system of machine tool accessories and functional attachments, fixtures are core auxiliary components widely used in the metal processing field. They are also important supporting devices to ensure the stable operation of various machine tools and the completion of processing procedures. During the machining process, fixtures are mainly responsible for the precise positioning and stable clamping of workpieces, which can effectively prevent workpiece displacement and misalignment during cutting, grinding and other operations, and provide a basic guarantee for machining accuracy. At present, there are a wide variety of fixtures on the market, which can be divided into many types according to the processing technology, machine tool specifications and workpiece shape characteristics. General-purpose fixtures can be adapted to most conventional parts, but their adaptability is insufficient when facing typical rotating workpieces such as discs and rings. These types of workpieces are mostly hollow structures with large radial dimensions, making them prone to slippage and eccentricity during clamping. They also tend to deform under external forces, requiring high standards for positioning methods and clamping force. Ordinary fixtures are difficult to meet their precision machining requirements. Based on this situation, tooling fixtures specifically designed for disc and ring-shaped workpieces have gradually become more widespread. These tooling fixtures optimize the positioning reference and clamping mechanism in combination with the workpiece structure, and can be adapted to multiple processes such as turning, grinding, and boring, becoming a crucial special equipment in the machining of such workpieces.

[0003] However, existing conventional tooling fixtures suitable for disc and ring-shaped workpieces often suffer from limitations in practical applications. Due to the thin walls and relatively weak rigidity of thin-walled ring-shaped workpieces, most existing fixtures focus primarily on external positioning, completing positioning and clamping from the outside. The inner wall area of ​​the workpiece often lacks corresponding support structures. During dynamic machining processes such as cutting and boring, the workpiece is prone to slight deformation due to cutting forces and mechanical disturbances. Varying degrees of vibration may also occur during machining, which over time affects the dimensional accuracy and surface finish of the workpiece. Furthermore, when machining large thin-walled disc-shaped workpieces, their wide surface area and insufficient rigidity generally require manual installation of auxiliary supports to strengthen the limiting mechanism, increasing the clamping process, slowing down the machining pace, and impacting the machining stability and overall operational efficiency.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling fixture for disc-shaped and ring-shaped workpieces, so as to solve the problems mentioned in the background art of ring-shaped workpieces lacking internal support and disc-shaped workpieces requiring manual auxiliary support. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling fixture for disc-shaped and ring-shaped workpieces, comprising a working platform, a drive disk rotatably mounted inside the working platform, a support and clamping assembly provided on the surface of the drive disk, a rotating shaft rotatably mounted on the side wall of the working platform, and an inner support assembly provided at the end of the rotating shaft; The support and clamping assembly includes a second rotating gear fixed to the lower surface of the drive disk and a drive groove formed on the upper surface of the drive disk. A plurality of second sliding blocks are slidably mounted on the surface of the work platform. A moving block is fixed to the bottom of the second sliding block. A second drive gear is rotatably mounted inside the work platform. The assembly also includes a plurality of support columns that are limited and slidably mounted on the surface of the work platform. A fixing groove is formed on the surface of the support columns. A rotating ring is rotatably mounted inside the work platform. A rubber limiting block is fixed to the inner wall of the rotating ring. A limiting handle is rotatably mounted on the side wall of the rotating ring. The assembly also includes a limiting groove formed on the surface of the work platform.

[0007] Preferably, the second rotating gear meshes with the second driving gear, the position of the moving block corresponds to the driving groove, and the driving groove has a spiral design.

[0008] Preferably, the fixing groove is inclined, and a return spring is provided at the bottom of the support column, and the support column is connected to the working platform through the return spring.

[0009] Preferably, the sidewall of the rubber limiting block is inclined, the position of the rubber limiting block corresponds to the fixing groove, and the position of the limiting handle corresponds to the limiting groove.

[0010] Preferably, the inner support assembly includes a first connecting wheel slidably mounted on the end of a rotating shaft, with a transmission gear fixed to the side wall of the first connecting wheel; a second connecting wheel rotatably mounted inside a support column, with a first drive gear fixed to the end of the second connecting wheel; and a rotating disk rotatably mounted inside a work platform, with a first rotating gear fixed to the bottom of the rotating disk; multiple guide grooves formed on the surface of the rotating disk; a fixed seat fixed inside the work platform; multiple sliding grooves formed on the surface of the fixed seat; a first sliding block slidably mounted in the sliding groove; a guide block rotatably mounted at the bottom of the first sliding block; and a telescopic sleeve elastically slidably mounted at the top of the first sliding block.

[0011] Preferably, the first connecting wheel meshes with the second connecting wheel, and the first driving gear meshes with the first rotating gear.

[0012] Preferably, the position of the transmission gear corresponds to that of the second drive gear, the surface of the rotating shaft is provided with a clutch spring, and the first connecting wheel is connected to the rotating shaft through the clutch spring.

[0013] Preferably, the guide groove is designed to be inclined, and the guide block is located inside the guide groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of an inner support component and a support clamping component, uses a rotating shaft as a unified power source. First, the inner support component is driven to expand outward, completing uniform inner support positioning from the inner wall of the ring-shaped workpiece. Then, the support clamping component is triggered to clamp and fix the outer wall of the workpiece. By limiting the position by first supporting the inner wall and then clamping the outer wall, the overall force on the workpiece is more uniform, avoiding the clamping and squeezing deformation problems that are easily caused by simply clamping the outer wall. This maintains the shape of the workpiece, ensures the roundness of the inner and outer circles of the workpiece, and enhances the overall stability during the processing of the ring-shaped workpiece.

[0015] 2. In this invention, the working platform, rotating shaft, and support clamping assembly are configured so that the support column is locked during operation, and the bottom of the workpiece is supported by the support column, thus providing a stable support foundation for the workpiece. At the same time, the rotating shaft outputs power to drive the support clamping assembly, which in turn drives the second sliding block to clamp and position the workpiece from the side wall. The bottom support combined with the side wall clamping constraint limit method offsets the cutting force and equipment vibration during the processing, prevents unnecessary deformation of the workpiece during processing, simplifies the clamping steps, and shortens the operation preparation time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the working platform of the present invention. Figure 3 This is a schematic diagram of the internal structure of the working platform of the present invention; Figure 4 This is a schematic diagram of the structure of the support column, rotating ring, limiting handle, drive disk, second sliding block and second drive gear of the present invention. Figure 5 This is a schematic diagram of the structure of the support column of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the internal support component of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the internal support component from another perspective of the present invention; Figure 8 This is a schematic diagram of the structure of the rotating shaft of the present invention; Figure 9 This is a schematic diagram of the split structure of the second connecting wheel and the rotating shaft of the present invention.

[0017] In the diagram: 1. Working platform; 101. Limiting groove; 2. Support column; 201. Fixing groove; 202. Rotating ring; 203. Limiting handle; 204. Rubber limiting block; 3. Rotating shaft; 301. First connecting wheel; 302. Transmission gear; 303. Clutch spring; 4. Second connecting wheel; 401. First drive gear; 5. Rotating disk; 501. First rotating gear; 502. Guide groove; 503. Fixing seat; 504. Sliding groove; 6. First sliding block; 601. Guide block; 602. Telescopic sleeve; 7. Second drive gear; 8. Drive disk; 801. Second rotating gear; 802. Drive groove; 803. Second sliding block; 804. Moving block. Detailed Implementation

[0018] Please see Figures 1-9 The present invention provides a technical solution: a tooling fixture for disc-shaped and ring-shaped workpieces, including a working platform 1, a drive disk 8 rotatably mounted inside the working platform 1, a support and clamping assembly provided on the surface of the drive disk 8, a rotating shaft 3 rotatably mounted on the side wall of the working platform 1, and an inner support assembly provided at the end of the rotating shaft 3; The support and clamping assembly includes a second rotating gear 801 fixed to the lower surface of the drive disk 8 and a drive groove 802 opened on the upper surface of the drive disk 8. Multiple second sliding blocks 803 are slidably installed on the surface of the work platform 1. A moving block 804 is fixed to the bottom of the second sliding block 803. A second drive gear 7 is rotatably installed inside the work platform 1. The assembly also includes multiple support columns 2 that are limited and slidably mounted on the surface of the work platform 1. A fixing groove 201 is opened on the surface of the support column 2. A rotating ring 202 is rotatably installed inside the work platform 1. A rubber limiting block 204 is fixed to the inner wall of the rotating ring 202. Flexible locking is achieved by utilizing the elastic deformation of the rubber. The clamping force is moderate and does not damage the workpiece. A limiting handle 203 is rotatably installed on the side wall of the rotating ring 202. The assembly also includes a limiting groove 101 opened on the surface of the work platform 1. The locking and limiting structure formed by the limiting handle 203 and the limiting groove 101 locks the position of the support column 2 by fixing the rotating ring 202.

[0019] In one embodiment of the present invention, the second rotating gear 801 meshes with the second driving gear 7. Through the meshing and cooperation of the second driving gear 7 and the second rotating gear 801, the power is transmitted, so that the driving disk 8 can be driven to rotate at a uniform speed. The position of the moving block 804 corresponds to the driving groove 802. The driving groove 802 has a spiral design, which converts the rotation of the driving disk 8 into the radial sliding of the second sliding block 803. The spiral design of the driving groove 802 ensures that multiple second sliding blocks 803 can move synchronously, uniformly, and at equal distances, so as to achieve multi-point uniform clamping of the outer wall of the workpiece.

[0020] In one embodiment of the present invention, the fixing groove 201 is designed with an inclination, which can form an inclined locking fit with the rubber limiting block 204. This can guide the rubber limiting block 204 to enter smoothly and generate compression, avoiding problems such as loosening or displacement of the support column 2 caused by processing vibration. A return spring is provided at the bottom of the support column 2. The support column 2 is connected to the work platform 1 through the return spring. When placing the workpiece, the weight of the workpiece can compress the support column 2 to adaptively press down, completing the leveling of the workpiece posture. After processing, the return spring drives the support column 2 to complete the reset. The return spring only provides the reset force and does not provide the support force. The support for the workpiece is provided by the locked support column 2.

[0021] In one embodiment of the present invention, the sidewall of the rubber limiting block 204 is inclined, and the position of the rubber limiting block 204 corresponds to the fixing groove 201. When the rotating ring 202 drives the rubber limiting block 204 to rotate, the inclined sidewall of the rubber limiting block 204 can smoothly enter the fixing groove 201, and a continuous and uniform extrusion force is generated with the rotation. Utilizing the good elasticity of the rubber material, the support column 2 is fixed by flexible extrusion. The position of the limiting handle 203 corresponds to the limiting groove 101. When the limiting handle 203 slides along the horizontal section of the limiting groove 101, it drives the rotating ring 202 to complete the locking action. When the limiting handle 203 rotates to the vertical section of the limiting groove 101, it locks the position of the rotating ring 202 and maintains the positioning state of the support column 2.

[0022] In one embodiment of the present invention, the inner support assembly includes a first connecting wheel 301 slidably mounted on the end of the rotating shaft 3, a transmission gear 302 fixed on the side wall of the first connecting wheel 301, a second connecting wheel 4 rotatably mounted in the support column 2, a first driving gear 401 fixed at the end of the second connecting wheel 4, and a rotating disk 5 rotatably mounted in the working platform 1. A first rotating gear 501 is fixed at the bottom of the rotating disk 5, and a plurality of guide grooves 502 are formed on the surface of the rotating disk 5. A fixed seat 503 is fixed in the working platform 1, and a plurality of sliding grooves 504 are formed on the surface of the fixed seat 503. A first sliding block 6 is slidably mounted in the sliding groove 504. A guide block 601 is rotatably mounted at the bottom of the first sliding block 6, and a telescopic sleeve 602 is elastically slidably mounted at the top of the first sliding block 6. The telescopic sleeve 602 has an adaptive avoidance capability. When placing a disc-shaped workpiece, the bottom of the workpiece can directly squeeze the telescopic sleeve 602 to move it down into the working platform 1, avoiding spatial interference.

[0023] In one embodiment of the present invention, the first connecting wheel 301 meshes with the second connecting wheel 4 to smoothly transmit the power output from the rotating shaft 3. The first driving gear 401 meshes with the first rotating gear 501 to further complete the power transmission, drive the rotating disk 5 to rotate synchronously, and realize the synchronous and equal radial movement of multiple first sliding blocks 6, so that the inner wall of the ring-shaped workpiece is subjected to balanced force and avoids single-point force.

[0024] In one embodiment of the present invention, the transmission gear 302 is positioned corresponding to the second drive gear 7. A clutch spring 303 is provided on the surface of the rotating shaft 3. The first connecting wheel 301 is connected to the rotating shaft 3 through the clutch spring 303. When the fixture performs internal support clamping, the clutch spring 303 is in a tight state, ensuring stable meshing between the first connecting wheel 301 and the second connecting wheel 4, transmitting power to complete the internal support clamping. When the first sliding block 6 is in the internal support position and the workpiece is in the limit position, the first connecting wheel 301 compresses the clutch spring 303 and slides outward, disengaging from the meshing with the second connecting wheel 4. The transmission gear 302 and the second drive gear 7 complete meshing and docking. The power of the rotating shaft 3 is transmitted to the second drive gear 7 through the transmission gear 302 to facilitate subsequent external clamping operations.

[0025] In one embodiment of the present invention, the guide groove 502 is inclined, and the guide block 601 is located inside the guide groove 502. When the rotating disk 5 rotates, it drives multiple sets of first sliding blocks 6 to move synchronously and uniformly with the cooperation of the inclined guide groove 502.

[0026] Working Principle: When using this fixture for disc-shaped and ring-shaped workpieces, the operator first places the ring-shaped workpiece on the surface of the work platform 1. The telescopic sleeve 602 can smoothly pass through the hollow area in the center of the workpiece without obstructing its placement. As the workpiece naturally falls into place, its bottom gradually contacts and presses against the end of the support column 2. The support column 2 adaptively moves downward according to the workpiece's state to maintain its balance. After the workpiece is in place, first rotate the limit handle 203 to adjust it to be parallel to the upper surface of the work platform 1, and then push the limit handle. 203, so that it slides along the horizontal section of the limiting groove 101. At this time, the limiting handle 203 drives the rotating ring 202 to rotate synchronously. The rubber limiting block 204, which is installed on the inner wall of the rotating ring 202 and has an inclined structure, rotates along with it and gradually squeezes into the fixing groove 201 opened on the surface of the support column 2. Relying on the elastic deformation ability of the rubber limiting block 204 itself, it tightly squeezes the fixing groove 201 to fix the position of the support column 2. Then, the limiting handle 203 is rotated again to lock it into the vertical section of the limiting groove 101 to lock the rotating ring 202 and ensure the support stability of the support column 2. Subsequently, the operator uses tools such as a wrench to rotate the rotating shaft 3. The rotating shaft 3 drives the first connecting wheel 301, which is slidably mounted at its end, to rotate synchronously. Through the meshing transmission between the first connecting wheel 301 and the second connecting wheel 4, the first driving gear 401 is driven to rotate synchronously. The first driving gear 401 meshes with the first rotating gear 501, thereby driving the rotating disk 5 to rotate. The guide block 601, which is rotatably mounted at the bottom of the first sliding block 6, is set in the guide groove 502 opened on the surface of the rotating disk 5. At the same time, the first sliding block 6 is slidably mounted in the sliding groove 504 opened on the surface of the fixed seat 503 fixed inside the work platform 1. While the rotating disk 5 rotates, under the guidance of the guide groove 502, the first sliding block 6 moves radially along the sliding groove 504, gradually expanding outward and pressing against the inner wall of the ring-shaped workpiece, so as to internally support and fix the inner wall of the ring-shaped workpiece with a uniform supporting force. After the first sliding block 6 moves into place, the rotating shaft 3 continues to rotate. At this time, the first drive gear 401 and the second connecting wheel 4 cannot rotate due to the workpiece limit. The first connecting wheel 301 will compress the clutch spring 303, move outward and disengage from the second connecting wheel 4, and release the engagement with the second connecting wheel 4. The transmission gear 302 fixed on the side wall of the first connecting wheel 301 engages with the second drive gear 7 as the first connecting wheel 301 moves. The rotation of the rotating shaft 3 drives the second drive gear 7 to rotate synchronously through the transmission gear 302. The second drive gear 7 also engages with the second rotating gear 801 fixed at the bottom of the drive disk 8. As the drive disk 8 rotates, the moving block 804 fixed at the bottom of the second sliding block 803 is set in the drive groove 802 opened on the upper surface of the drive disk 8. Through the spirally designed drive groove 802, the second sliding block 803 is driven to move radially along the surface of the work platform 1 to complete the clamping of the outer wall of the ring-shaped workpiece. The bidirectional positioning inside and outside reduces processing vibration and workpiece deformation. When using this tooling fixture for disc-shaped and ring-shaped workpieces to clamp the disc-shaped workpiece, first place the disc-shaped workpiece on the surface of the work platform 1. The bottom of the workpiece will contact and press against the telescopic sleeve 602, causing it to move down into the work platform 1, avoiding spatial interference and not affecting the placement of the disc-shaped workpiece. Furthermore, the subsequent rotation of the rotating shaft 3, which drives the first sliding block 6 to move the telescopic sleeve 602, will not affect the installation of the disc-shaped workpiece. During the continuous descent of the workpiece, the bottom will also contact and press against the end of the support column 2, causing the support column 2 to adaptively descend and support the workpiece. After the disc-shaped workpiece is placed, adjust according to the same operating procedure. The limit handle 203, relying on the elastic deformation of the rubber limit block 204, compresses and fixes the support column 2, thus solidifying the foundation for the bottom support of the workpiece. After the bottom positioning is completed, the rotating shaft 3 continues to rotate. After the first sliding block 6 moves to the limit position inside the work platform 1, the power of the rotating shaft 3 is automatically switched to the second drive gear 7, driving the second sliding block 803 to move radially toward the outer edge of the workpiece, completing the clamping and fixing from the side wall. The bottom support cooperates with the side wall clamping to constrain the large thin disc, reduce the probability of workpiece deformation, eliminate the step of manually adding auxiliary support, simplify the clamping process of disc workpieces, and improve processing stability.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A tooling fixture for disc-shaped and ring-shaped workpieces, comprising a working platform (1), characterized in that: The working platform (1) is rotatably mounted with a drive disk (8), and the surface of the drive disk (8) is provided with a support and clamping assembly. The side wall of the working platform (1) is rotatably mounted with a rotating shaft (3), and the end of the rotating shaft (3) is provided with an inner support assembly. The support clamping assembly includes a second rotating gear (801) fixed on the lower surface of the drive disk (8) and a drive groove (802) opened on the upper surface of the drive disk (8). A plurality of second sliding blocks (803) are slidably installed on the surface of the work platform (1). A moving block (804) is fixed at the bottom of the second sliding block (803). A second drive gear (7) is rotatably installed inside the work platform (1). It also includes a plurality of support columns (2) that are limited to slide on the surface of the work platform (1). A fixing groove (201) is opened on the surface of the support column (2). A rotating ring (202) is rotatably installed inside the work platform (1). A rubber limiting block (204) is fixed on the inner wall of the rotating ring (202). A limiting handle (203) is rotatably installed on the side wall of the rotating ring (202). It also includes a limiting groove (101) opened on the surface of the work platform (1). The sidewall of the rubber limiting block (204) is inclined, the position of the rubber limiting block (204) corresponds to the fixed groove (201), and the position of the limiting handle (203) corresponds to the limiting groove (101); The inner support assembly includes a first connecting wheel (301) slidably mounted on the end of the rotating shaft (3), a transmission gear (302) fixed on the side wall of the first connecting wheel (301), a second connecting wheel (4) rotatably mounted in the support column (2), a first drive gear (401) fixed on the end of the second connecting wheel (4), and a rotating disk (5) rotatably mounted in the working platform (1), a first rotating gear (501) fixed on the bottom of the rotating disk (5), a plurality of guide grooves (502) opened on the surface of the rotating disk (5), a fixed seat (503) fixed in the working platform (1), a plurality of sliding grooves (504) opened on the surface of the fixed seat (503), a first sliding block (6) slidably mounted in the sliding groove (504), a guide block (601) rotatably mounted on the bottom end of the first sliding block (6), and a telescopic sleeve (602) elastically slidably mounted on the top end of the first sliding block (6). With the inner support component and the support clamping component set, the rotating shaft (3) is used as a unified power source. First, the inner support component is driven to expand outward, and uniform inner support positioning is completed from the inner wall of the ring-shaped workpiece. Then, the support clamping component is triggered to clamp and fix the outer wall of the workpiece.

2. The tooling fixture for disc-shaped and ring-shaped workpieces according to claim 1, characterized in that: The second rotating gear (801) meshes with the second driving gear (7), and the position of the moving block (804) corresponds to the driving groove (802), which is spirally designed.

3. A tooling fixture for disc-shaped and ring-shaped workpieces according to claim 1, characterized in that: The fixing groove (201) is inclined, and the bottom of the support column (2) is provided with a reset spring. The support column (2) is connected to the working platform (1) through the reset spring.

4. A tooling fixture for disc-shaped and ring-shaped workpieces according to claim 1, characterized in that: The first connecting wheel (301) meshes with the second connecting wheel (4), and the first driving gear (401) meshes with the first rotating gear (501).

5. A tooling fixture for disc-shaped and ring-shaped workpieces according to claim 4, characterized in that: The position of the transmission gear (302) corresponds to the position of the second drive gear (7). The surface of the rotating shaft (3) is provided with a clutch spring (303). The first connecting wheel (301) is connected to the rotating shaft (3) through the clutch spring (303).

6. A tooling fixture for disc-shaped and ring-shaped workpieces according to claim 5, characterized in that: The guide groove (502) is designed to be inclined, and the guide block (601) is located inside the guide groove (502).

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