Hydraulic torque converter pressure plate machining fixture

Abstract

The hydraulic torque converter pressure plate machining clamp disclosed by the embodiment comprises a clamp body and a tailstock assembly. In the case that the outer circle of the hydraulic torque converter pressure plate does not need to be machined, the present application can guarantee reliable centering and effective clamping of the part, and can also guarantee smaller clamping deformation. The present application can greatly improve the clamping efficiency while improving the machining precision of the part.

Description

Technical Field

[0001] This invention belongs to the field of automotive hydraulic torque converter parts processing and manufacturing, specifically relating to a hydraulic torque converter pressure plate processing fixture. Background Technology

[0002] The pressure plate is a key component of the lock-up clutch assembly in a torque converter, and the friction plates of the lock-up clutch assembly are bonded to the pressure plate. The lock-up clutch assembly is the main component of the torque converter that transmits power, playing a role in disengagement and engagement. When the torque converter is locked, torque is transmitted by hydraulic pressure pushing the pressure plate and the cover assembly to lock together.

[0003] The pressure plate is a thin-walled disc-shaped part. Due to its poor structural strength, it is easy to deform during processing. The bonding surface of the friction plate has high processing accuracy requirements, and the processing quality directly affects the bonding strength of the friction plate and the torque during locking.

[0004] Currently, the flat surface of the pressure plate is machined using turning technology. There are two common types of fixtures. The first type uses an auxiliary support cylinder to support the end face of the pressure plate, increasing the axial rigidity of the part while simultaneously using axial clamping to reduce machining deformation. This method requires an additional hydraulic circuit to power the auxiliary support cylinder, resulting in a more complex tooling and equipment structure. Furthermore, cutting fluid can easily seep into the auxiliary support cylinder during use, causing unstable support force. Controlling the speed of the auxiliary support cylinder also requires a longer clamping time, impacting production efficiency; multiple machines are needed for mass production. The second type uses a chuck to hold the outer diameter of the pressure plate. This method requires an additional machining step on the outer diameter to ensure the part remains centered during clamping, increasing the process route and production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic torque converter pressure plate machining fixture, comprising: a fixture body and a tailstock assembly.

[0006] The clamping device includes a base, a pull sleeve, several hinge supports, several clamping levers, a pin, a spring assembly, a pressure block, a support ring, a mounting base, and an anti-rotation pin.

[0007] The base is fixedly connected to the machine tool spindle.

[0008] The base is provided with a pull sleeve, one end of which can slide relative to the base, and the other end of which is threaded to a pull rod in the machine tool spindle.

[0009] The base is fixedly connected to a mounting seat and 6 to 12 hinge supports.

[0010] The hinge support is connected to the corresponding clamping lever via a pin.

[0011] The clamping lever can rotate around the pin.

[0012] One end of the clamping lever is connected to the spring assembly, and the other end is fixed to the pressure block.

[0013] The spring assembly is installed in the mounting base.

[0014] The mounting base is connected to a support ring and an anti-rotation pin.

[0015] The tailstock assembly includes a centering shaft, a centering disc, a clamping pin, a centering spring element, a clamping spring element, a spring cover plate, a tapered seat, and a flat key.

[0016] The centering shaft is fixed to one end of the tapered seat.

[0017] The centering shaft connects the flat key and the centering disc.

[0018] The centering disk is evenly distributed with 3 to 6 sets of centering spring elements.

[0019] The other end of the centering spring element is connected to the tapered seat.

[0020] The spring cover plate contains 3 to 6 sets of compression spring elements. One end of each compression spring element is connected to a corresponding compression pin, and the other end can slide into a hole on the tapered seat.

[0021] The spring cover is fixed to the tapered seat.

[0022] The tapered seat is fixedly connected to the tailstock of the machine tool.

[0023] Furthermore, when the hydraulic torque converter pressure plate machining fixture is in operation, the hydraulic torque converter pressure plate is mounted on the support ring of the fixture body.

[0024] The holes on the hydraulic torque converter pressure plate are inserted into the corresponding anti-rotation pins. The machine tool drives the tailstock assembly to move. The centering shaft on the tailstock assembly cooperates with the center hole of the mounting base. The centering plate presses against the center hole of the hydraulic torque converter pressure plate to achieve centering of the pressure plate. The clamping pin presses against the plane of the pressure plate, so that the pressure plate is in contact with the support ring. The machine tool drives the pull sleeve on the fixture to move backward. The spring assembly pushes the clamping lever to clamp the outer circle of the part, completing the clamping of the part.

[0025] Furthermore, the connection between the centering disk, the centering shaft, and the parallel key is a sliding connection.

[0026] Furthermore, the part where the centering plate mates with the center hole of the pressure plate is a conical structure with a conical angle of 10° to 20°.

[0027] Furthermore, the axial force of the centering disc clamping parts is 50N to 100N, and the axial force of all the clamping pins clamping parts of the tailstock assembly is 100N to 150N.

[0028] Furthermore, the clamping force of each set of spring assemblies in the clamping body pushing the clamping lever is 100N to 200N.

[0029] The technical effects of this invention are undeniable. Without machining the outer diameter of the hydraulic torque converter pressure plate, this invention can ensure reliable centering and effective clamping of the parts, while also ensuring minimal clamping deformation. This invention improves the machining accuracy of the parts and greatly enhances clamping efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a hydraulic torque converter pressure plate machining fixture structure according to the present invention;

[0031] Figure 2 For the clamping body;

[0032] Figure 3 For tailstock assembly;

[0033] In the diagram: clamp body 1, base 11, pull sleeve 12, hinge support 13, clamping lever 14, pin 15, spring assembly 16, pressure block 17, support ring 18, mounting base 19, anti-rotation pin 110, pressure plate 2, tailstock assembly 3, centering shaft 31, centering plate 32, clamping pin 33, centering spring element 34, clamping spring element 35, spring cover plate 36, tapered seat 37, flat key 38. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments, but it should not be construed that the scope of the present invention is limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention should be included within the scope of protection of the present invention.

[0035] Example 1:

[0036] See Figures 1 to 3 This embodiment discloses a hydraulic torque converter pressure plate machining fixture, including: a fixture body 1 and a tailstock assembly 3.

[0037] The clamping device includes a base 11, a pull sleeve 12, several hinge supports 13, several clamping levers 14, a pin 15, a spring assembly 16, a pressure block 17, a support ring 18, a mounting base 19, and an anti-rotation pin 110.

[0038] The base 11 is fixedly connected to the machine tool spindle.

[0039] The base 11 is provided with a pull sleeve 12. One end of the pull sleeve 12 can slide relative to the base 11, and the thread of the other end is connected to the pull rod in the machine tool spindle.

[0040] The base 11 is fixedly connected to a mounting seat 19 and 6 to 12 hinge supports 13.

[0041] The hinge support 13 is connected to the corresponding clamping lever 14 via a pin 15.

[0042] The clamping lever 14 can rotate around the pin 15.

[0043] One end of the clamping lever 14 is connected to the spring assembly 16, and the other end is fixedly connected to the pressure block 17.

[0044] The spring assembly 16 is mounted in the mounting base 19.

[0045] The mounting base 19 is connected to the support ring 18 and the anti-rotation pin 110.

[0046] When clamping the part, the machine tool drives the pull sleeve 12 to retract, the spring assembly 16 pushes the clamping lever 14, and drives the pressure block 17 to clamp the outer circle of the part.

[0047] The tailstock assembly 3 includes a centering shaft 31, a centering disc 32, a clamping pin 33, a centering spring element 34, a clamping spring element 35, a spring cover plate 36, a tapered seat 37, and a flat key 38.

[0048] The centering shaft 31 is fixed to one end of the tapered seat 37.

[0049] The centering shaft 31 connects the flat key 38 and the centering plate 32.

[0050] The centering disk 32 is evenly distributed with 3 to 6 sets of centering spring elements 34.

[0051] The other end of the centering spring element 34 is connected to the tapered seat 37.

[0052] The centering spring element 34 pushes the centering disk 32 to center the part.

[0053] The spring cover plate 36 has 3 to 6 sets of compression spring elements 35 evenly distributed. One end of each compression spring element 35 is connected to a corresponding compression pin 33, and the other end can slide into a hole on the tapered seat 37.

[0054] The spring cover plate 36 is fixedly connected to the tapered seat 37.

[0055] The tapered seat 37 is fixedly connected to the tailstock of the machine tool.

[0056] The flat key 38 enables the angular positioning of the centering disk 32.

[0057] When the hydraulic torque converter pressure plate machining fixture is in operation, the hydraulic torque converter pressure plate 2 is installed on the support ring 18 of the fixture body 1.

[0058] The hole on the hydraulic torque converter pressure plate 2 is inserted into the corresponding anti-rotation pin 110. The machine tool drives the tailstock assembly 3 to move. The centering shaft 31 on the tailstock assembly 3 cooperates with the center hole of the mounting base 19. The centering plate 32 presses against the center hole of the hydraulic torque converter pressure plate 2 to achieve centering of the pressure plate 2. The clamping pin 33 presses against the plane of the pressure plate 2, so that the pressure plate 2 is in contact with the support ring 18. The machine tool drives the pull sleeve 12 on the fixture body 1 to move backward. The spring assembly 16 pushes the clamping lever 14 to clamp the outer circle of the part, completing the clamping of the part.

[0059] The connection between the centering disk 32, the centering shaft 31, and the key 38 is a sliding connection.

[0060] The part where the centering plate 32 mates with the center hole of the pressure plate 2 is a conical structure with a conical angle of 10° to 20°.

[0061] The axial force of the centering disc 32 clamping parts is 50N to 100N, and the axial force of all the clamping pins 33 of the tailstock assembly 3 clamping parts is 100N to 150N.

[0062] The clamping force of each set of spring assemblies 16 in the clamping body 1 pushing the clamping lever 14 is 100N to 200N.

[0063] Example 2:

[0064] See Figures 1 to 3 This embodiment discloses a hydraulic torque converter pressure plate machining fixture, including: a fixture body 1 and a tailstock assembly 3.

[0065] The clamping device includes a base 11, a pull sleeve 12, several hinge supports 13, several clamping levers 14, a pin 15, a spring assembly 16, a pressure block 17, a support ring 18, a mounting base 19, and an anti-rotation pin 110.

[0066] The base 11 is fixedly connected to the machine tool spindle.

[0067] The base 11 is provided with a pull sleeve 12. One end of the pull sleeve 12 can slide relative to the base 11, and the thread of the other end is connected to the pull rod in the machine tool spindle.

[0068] The base 11 is fixedly connected to a mounting seat 19 and 6 to 12 hinge supports 13.

[0069] The hinge support 13 is connected to the corresponding clamping lever 14 via a pin 15.

[0070] The clamping lever 14 can rotate around the pin 15.

[0071] One end of the clamping lever 14 is connected to the spring assembly 16, and the other end is fixedly connected to the pressure block 17.

[0072] The spring assembly 16 is mounted in the mounting base 19.

[0073] The mounting base 19 is connected to the support ring 18 and the anti-rotation pin 110.

[0074] When clamping the part, the machine tool drives the pull sleeve 12 to retract, the spring assembly 16 pushes the clamping lever 14, and drives the pressure block 17 to clamp the outer circle of the part.

[0075] The tailstock assembly 3 includes a centering shaft 31, a centering disc 32, a clamping pin 33, a centering spring element 34, a clamping spring element 35, a spring cover plate 36, a tapered seat 37, and a flat key 38.

[0076] The centering shaft 31 is fixed to one end of the tapered seat 37.

[0077] The centering shaft 31 connects the flat key 38 and the centering plate 32.

[0078] The centering disk 32 is evenly distributed with 3 to 6 sets of centering spring elements 34.

[0079] The other end of the centering spring element 34 is connected to the tapered seat 37.

[0080] The centering spring element 34 pushes the centering disk 32 to center the part.

[0081] The spring cover plate 36 has 3 to 6 sets of compression spring elements 35 evenly distributed. One end of each compression spring element 35 is connected to a corresponding compression pin 33, and the other end can slide into a hole on the tapered seat 37.

[0082] The spring cover plate 36 is fixedly connected to the tapered seat 37.

[0083] The tapered seat 37 is fixedly connected to the tailstock of the machine tool.

[0084] The flat key 38 enables the angular positioning of the centering disk 32.

[0085] Example 3:

[0086] The main structure of this embodiment is the same as that of embodiment 2. When the hydraulic torque converter pressure plate processing fixture is working, the hydraulic torque converter pressure plate 2 is installed on the support ring 18 of the fixture body 1.

[0087] The hole on the hydraulic torque converter pressure plate 2 is inserted into the corresponding anti-rotation pin 110. The machine tool drives the tailstock assembly 3 to move. The centering shaft 31 on the tailstock assembly 3 cooperates with the center hole of the mounting base 19. The centering plate 32 presses against the center hole of the hydraulic torque converter pressure plate 2 to achieve centering of the pressure plate 2. The clamping pin 33 presses against the plane of the pressure plate 2, so that the pressure plate 2 is in contact with the support ring 18. The machine tool drives the pull sleeve 12 on the fixture body 1 to move backward. The spring assembly 16 pushes the clamping lever 14 to clamp the outer circle of the part, completing the clamping of the part.

[0088] Example 4:

[0089] The main structure of this embodiment is the same as that of embodiment 2. The connection between the centering disk 32, the centering shaft 31, and the key 38 is a sliding connection.

[0090] Example 5:

[0091] The main structure of this embodiment is the same as that of embodiment 3. The part where the centering plate 32 and the center hole of the pressure plate 2 are fitted is a conical structure with a conical angle of 10° to 20°.

[0092] Example 6:

[0093] The main structure of this embodiment is the same as that of embodiment 3. The axial force of the centering disc 32 pressing the parts is 50N to 100N, and the axial force of all the pressing pins 33 of the tailstock assembly 3 pressing the parts is 100N to 150N.

[0094] Example 7:

[0095] The main structure of this embodiment is the same as that of embodiment 3. The clamping force of each set of spring assemblies 16 in the clamp body 1 pushing the clamping lever 14 is 100N to 200N.

[0096] Example 8:

[0097] See Figures 1 to 3 The purpose of this invention is to provide a pressure plate processing fixture that is simple in structure, reasonable in design, and reliable in operation in order to solve the above problems.

[0098] This invention patent achieves the above objectives through the following solutions:

[0099] A hydraulic torque converter pressure plate machining fixture includes a fixture body and a tailstock assembly. The fixture body includes a base, which is fixedly connected to a machine tool spindle. A pull sleeve is installed inside the base, one end of which can slide relative to the base, and the other end of which is threaded to a pull rod inside the machine tool spindle. Six to twelve hinge supports and a mounting base are fixedly connected to the base. Each hinge support is connected to a corresponding clamping lever via a pin, allowing the clamping lever to rotate. One end of each clamping lever is connected to a set of spring assemblies, and the other end of each clamping lever is fixedly connected to a pressure block. The spring assemblies are installed inside the mounting base. A support ring and an anti-rotation pin are fixedly connected to the mounting base. The support ring supports the end face of the part, and the anti-rotation pin prevents the part from rotating during machining. When clamping the part, the machine tool moves the pull sleeve backward, the spring assemblies push the clamping levers, and the pressure blocks clamp the outer diameter of the part.

[0100] The tailstock assembly includes a tapered seat, which is fixedly connected to the machine tool tailstock. A spring cover plate is fixedly attached to the tapered seat, and 3-6 sets of clamping spring elements are evenly distributed in the spring cover plate. Each set of clamping spring elements has a corresponding clamping pin connected to its other end. The other end of the clamping pin slides into a hole on the tapered seat, and the clamping spring elements push the clamping pin to clamp the part. A centering shaft is fixedly attached to one end of the tapered seat, and a flat key and a centering disc are connected to the centering shaft. The centering disc is slidably connected to both the centering shaft and the flat key, and the flat key provides angular positioning for the centering disc. 3-6 sets of centering spring elements are evenly distributed on the centering disc, and the other end of each centering spring element is connected to the tapered seat. The centering spring elements push the centering disc to center the part.

[0101] The torque converter pressure plate is installed on the support ring of the fixture body, and the hole on the torque converter pressure plate is inserted into the anti-rotation pin. The machine tool drives the tailstock assembly to move towards the part. The centering shaft on the tailstock assembly mates with the center hole of the mounting seat on the fixture body. The centering plate presses against the center hole of the torque converter pressure plate to center the part. The clamping pin presses against the pressure plate plane to make the pressure plate fit against the support ring. The machine tool drives the pull sleeve on the fixture body to retract, and the spring assembly pushes the clamping lever to clamp the outer circle of the part, completing the part clamping.

[0102] Furthermore, the portion where the centering disc mates with the center hole of the pressure plate is a conical structure with a conical angle of 10° to 20°. The axial force of the centering disc clamping parts is 50N to 100N, and the axial force of all the clamping pin clamping parts is 100N to 150N.

[0103] Furthermore, the clamping force of each set of spring assemblies in the clamping body pushing the clamping lever is 100N to 200N.

[0104] The technical effects of this invention are undeniable. By using this fixture, the outer diameter of the hydraulic torque converter pressure plate can be reliably centered and effectively clamped without machining, while ensuring minimal clamping deformation, improving the machining accuracy of the parts, and greatly enhancing clamping efficiency.

Claims

1. A machining fixture for a hydraulic torque converter pressure plate, characterized in that, include: Clamp body (1) and tailstock assembly (3); The clamping device includes a base (11), a pull sleeve (12), several hinge supports (13), several clamping levers (14), a pin (15), a spring assembly (16), a pressure block (17), a support ring (18), a mounting base (19), and an anti-rotation pin (110); The base (11) is fixedly connected to the machine tool spindle; The base (11) is provided with a pull sleeve (12), one end of which can slide relative to the base (11), and the thread of the other end is connected to the pull rod in the machine tool spindle; The base (11) is fixedly connected to a mounting seat (19) and 6 to 12 hinge supports (13); The hinge support (13) is connected to the corresponding clamping lever (14) via a pin (15); The clamping lever (14) can rotate around the pin (15); One end of the clamping lever (14) is connected to the spring assembly (16), and the other end is fixedly connected to the pressure block (17); The spring assembly (16) is installed in the mounting base (19); The mounting base (19) is connected to a support ring (18) and an anti-rotation pin (110); The tailstock assembly (3) includes a centering shaft (31), a centering disc (32), a clamping pin (33), a centering spring element (34), a clamping spring element (35), a spring cover plate (36), a tapered seat (37), and a flat key (38); The centering shaft (31) is fixed to one end of the tapered seat (37); The centering shaft (31) connects the flat key (38) and the centering plate (32); The centering disk (32) is evenly distributed with 3 to 6 sets of centering spring elements (34); The other end of the centering spring element (34) is connected to the tapered seat (37); The spring cover plate (36) has 3 to 6 sets of compression spring elements (35) evenly distributed in it. One end of the compression spring element (35) is connected to the corresponding compression pin (33), and the other end can slide with the hole on the tapered seat (37). The spring cover plate (36) is fixed to the tapered seat (37); The tapered seat (37) is fixedly connected to the tailstock of the machine tool.

2. The hydraulic torque converter pressure plate machining fixture according to claim 1, characterized in that, When the hydraulic torque converter pressure plate machining fixture is working, the hydraulic torque converter pressure plate (2) is installed on the support ring (18) of the fixture body (1); The hole on the hydraulic torque converter pressure plate (2) is inserted into the corresponding anti-rotation pin (110). The machine tool drives the tailstock assembly (3) to move. The centering shaft (31) on the tailstock assembly (3) is engaged with the center hole of the mounting base (19). The centering plate (32) presses the center hole of the hydraulic torque converter pressure plate (2) to achieve centering of the pressure plate (2). The clamping pin (33) presses the plane of the pressure plate (2) so that the pressure plate (2) is in contact with the support ring (18). The machine tool drives the pull sleeve (12) on the clamping body (1) to move backward. The spring assembly (16) pushes the clamping lever (14) to clamp the outer circle of the part, completing the clamping of the part.

3. The hydraulic torque converter pressure plate machining fixture according to claim 1, characterized in that, The connection between the centering disk (32), the centering shaft (31), and the key (38) is a sliding connection.

4. A hydraulic torque converter pressure plate machining fixture according to claim 2, characterized in that, The part where the centering plate (32) and the pressure plate (2) meet is a conical structure with a conical angle of 10° to 20°.

5. A hydraulic torque converter pressure plate machining fixture according to claim 2, characterized in that, The axial force of the centering disc (32) clamping parts is 50N to 100N, and the axial force of all the clamping pins (33) of the tailstock assembly (3) clamping parts is 100N to 150N.

6. A hydraulic torque converter pressure plate machining fixture according to claim 2, characterized in that, Each set of spring assemblies (16) in the clamping body (1) pushes the clamping lever (14) with a clamping force of 100N to 200N.

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