A washing machine accessory machining fixture

Abstract

The present application relates to the technical field of washing machine processing, specifically is a kind of washing machine accessory machine processing fixture, including workbench, workbench includes intermittent rotation's rotating table, rotating table is equipped with the clamping seat of multiple circumferential uniform arrangement, clamping seat middle part is equipped with clamping hole, the positive unit and pre-clamping unit are sequentially installed on the clamping seat from top to bottom;The present application can adopt the mode of front and back straightening pulley mounting shaft to the axial positive of pulley before processing, simultaneously, the contact force is applied to the both sides of the shaft shoulder of pulley, the shaft shoulder of pulley is towards directly above, realize the circumferential positive of pulley, to realize the accurate calibration of pulley position, increase the processing accuracy of pulley, simultaneously, the present application can also be quickly clamped to the pulley of different size specifications, ensure the processing efficiency of pulley.

Description

Technical Field

[0001] This invention relates to the field of washing machine processing technology, specifically a machining fixture for washing machine parts. Background Technology

[0002] In the manufacturing process of washing machines, the machining precision of various mechanical parts directly affects the overall operating performance and service life of the washing machine. Among them, the pulley, as the core component of the washing machine's transmission system, plays a crucial role in transmitting power and coordinating the operation of key components such as the motor and drum. Figure 8 As shown, the pulley includes a mounting shaft for assembly with the drive shaft or driven shaft, a shoulder for axial positioning and limiting, a hub for meshing with the belt for transmission, and a disc for structural support and torque transmission. When machining the pulley, drilling and tapping operations are required at specific positions on the shoulder. The machined holes are mainly used for subsequent assembly of locating pins or fastening bolts to ensure that the pulley is firmly installed and accurately positioned in the washing machine transmission system.

[0003] Currently, when drilling and tapping pulleys, a special fixture is often used to fix the pulley on a rotary table. The specific operation is as follows: the operator inserts the mounting shaft of the pulley into the clamping hole of the fixture, and makes the shoulder of the pulley face upward to correctly position and expose the shoulder area to be processed. Through the continuous rotation of the worktable, the fixture with the pulley is moved sequentially to the drilling station and the tapping station. The drilling station and the tapping station are also equipped with clamping plates. By driving the clamping plates to move closer to the fixture, the clamping plates and the fixture cooperate to clamp and fix the pulley, thereby increasing the processing stability when drilling or tapping the pulley. After completing the corresponding processing steps, it is finally transferred to the unloading station for unloading, realizing the drilling and tapping of the pulley.

[0004] Existing fixtures have the following problems when drilling and tapping pulleys: When the mounting shaft of the pulley is inserted into the clamping hole, the pulley may have an initial positional deviation, the mounting shaft is prone to axial angular deviation, and the shoulder may also have circumferential angular deviation. Existing fixtures rely solely on manual calibration of the pulley position by the operator, which cannot ensure accurate calibration of the pulley position. This makes it easy for the machined hole to have circumferential or axial deviation, which in turn reduces the machining accuracy of subsequent drilling and tapping. In addition, the clamping structure of existing fixtures is mostly designed with fixed dimensions, which can only be adapted to pulleys of specific specifications. When machining pulleys of different sizes and specifications, the fixture needs to be changed, thereby reducing the machining efficiency of pulleys. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a machining fixture for washing machine parts, comprising a worktable, the worktable including an intermittently rotating rotary table, a plurality of circumferentially evenly arranged clamping seats mounted on the rotary table, each clamping seat having a clamping hole in the center, and a positioning unit and a pre-clamping unit sequentially mounted on the clamping seat from top to bottom; the pre-clamping unit includes two symmetrically arranged arc-shaped clamping plates concentrically distributed within the clamping hole, the arc-shaped clamping plates being connected to the clamping seats via a clamping assembly, the clamping assembly being able to drive the arc-shaped clamping plates to elastically clamp the mounting shaft of the pulley, and a reciprocating rod being mounted on the clamping assembly; the positioning unit includes two symmetrically arranged positioning plates distributed within the clamping hole, the positioning plates being pressurized... The pressure assembly is connected to the clamping seat. The pressure assembly can drive the positioning plate to elastically abut against both sides of the pulley's shaft shoulder. A U-shaped pressure plate is installed on both pressure assemblies. The pressure plate is connected to the clamping seat through a locking plate. The locking plate is slidably installed on the upper end of the clamping seat near the middle of the rotary table. A matching rod is fixedly installed at the rear end of the locking plate. A matching plate and a matching block are installed on the worktable through a connecting assembly. When the rotary table rotates, the matching block and the reciprocating rod cooperate to drive the arc-shaped clamping plate to straighten the installation shaft of the pulley. The matching plate can cooperate with the matching rod to increase the clamping force of the positioning plate on the pulley shaft shoulder, thereby achieving circumferential alignment of the pulley. Then, the locking plate locks the position of the positioning plate, so that the positioning plate clamps and fixes the shaft shoulder of the pulley.

[0006] Preferably, a plurality of circumferentially arranged clamping blocks are radially slidably mounted on one end of the clamping seat away from the center of the rotary table via a top extension spring. Triangular blocks are fixedly mounted on opposite sides of the plurality of clamping blocks, and the triangular blocks can clamp the hub of the pulley onto the clamping seat.

[0007] Preferably, the clamping seat has a mounting hole corresponding to the arc-shaped clamping plate. The clamping assembly includes a reciprocating plate slidably installed in the mounting hole. The reciprocating plate is slidably connected to its corresponding arc-shaped clamping plate through an elastic clamping rod. The two arc-shaped clamping plates have inclined surfaces on opposite sides, and a number of balls are installed on opposite sides of the two arc-shaped clamping plates.

[0008] Preferably, the reciprocating rod is fixedly installed at one end of the reciprocating plate near the center of the rotary table, and a return spring is connected between the reciprocating plate and the mounting hole.

[0009] Preferably, the clamping seat has two mounting holes that correspond one-to-one with the positioning plate. The pressure assembly includes a sliding plate that is slidably installed in the two mounting holes. The sliding plate is slidably connected to the corresponding positioning plate through an elastic pressure rod. Both positioning plates have inclined surfaces on opposite sides.

[0010] Preferably, the pressure plate has two symmetrically arranged guide grooves, and a synchronizing rod is slidably installed in the guide groove. The lower end of the synchronizing rod slides through the clamping seat and is fixedly connected to the upper end of the corresponding slide plate. When the pressure plate moves to the end away from the center of the rotary table, the guide groove and the synchronizing rod cooperate to drive the two slide plates to move to the opposite side.

[0011] Preferably, the two guide grooves are arranged at an angle away from the center of the rotary table, and at the end of the two guide grooves near the center of the rotary table, they are arranged along the length of the clamping seat.

[0012] Preferably, the lower end of the locking plate is provided with multiple evenly arranged locking slots corresponding to the position of the positioning plate, and the upper end of the positioning plate is fixedly installed with an insert plate. When the positioning plate moves forward, the insert plate can be inserted into the corresponding locking slot to lock the position of the positioning plate.

[0013] Preferably, the front end of each locking groove is configured with a flared structure. When the pulley is still circumferentially misaligned, the insert plate can cooperate with the flared structure of the locking groove to achieve precise circumferential alignment of the pulley.

[0014] Preferably, the connecting group includes connecting rings concentrically distributed above the rotary table. The connecting rings are connected to the worktable through U-shaped connecting rods. The mating plate has an arc-shaped structure and is fixedly installed on the outside of the connecting ring. The front end of the mating plate has an inclined surface that mates with the mating rod. The mating block is fixedly installed on the front end of the outside of the connecting ring. Multiple mating blocks are provided, and their outer sides are set to arc shape.

[0015] The beneficial effects of this invention are as follows: First, this invention can axially align the pulley by straightening the pulley mounting shaft back and forth before processing, and simultaneously apply a resisting force to both sides of the pulley's shaft shoulder so that the pulley's shaft shoulder faces directly upward, thereby achieving circumferential alignment of the pulley, thus achieving precise calibration of the pulley's position and increasing the processing accuracy of the pulley. In addition, this invention can also quickly clamp pulleys of different sizes and specifications, ensuring the processing efficiency of the pulley.

[0016] Second, the arc-shaped clamping plate of the present invention can quickly clamp pulley mounting shafts of different sizes and specifications under the action of the clamping group. At the same time, the reciprocating rod can cooperate with the mating block to drive the arc-shaped clamping plate to straighten the pulley mounting shaft back and forth through the clamping group, thereby achieving axial alignment of the mounting shaft.

[0017] Third, the positioning plate of the present invention can apply a resisting force to both sides of the pulley shaft shoulder under the action of the pressure group, ensuring that the shaft shoulder of the pulley faces directly upward, thereby achieving circumferential positioning of the pulley. At the same time, the mating rod of the present invention can cooperate with the mating plate to gradually increase the resisting force applied by the positioning plate to the pulley shaft shoulder through the pressure group, ensuring accurate calibration of the circumferential position of the pulley.

[0018] Fourth, the locking plate of the present invention can lock the position of the positioning plate, so that the positioning plate fixes the pulley shoulder after the position is accurately calibrated, thereby increasing the stability during the processing of the pulley. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a top view of the connecting ring, mating plate, mating block, reciprocating rod, and mating rod of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the clamping base, the positioning unit, and the pre-clamping unit of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the positioning unit and pre-clamping unit after the clamping seat has been partially cut out according to the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the positioning plate, sliding plate, pressure plate, and synchronizing rod after the clamping seat has been partially cut out according to the present invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the positioning plate, insertion plate, and locking plate of the present invention.

[0026] Figure 7 This is a top view of the insert plate and locking plate of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of a pulley.

[0028] Reference numerals: 1. Worktable; 11. Rotary table; 12. Connecting assembly; 121. Connecting ring; 13. Mating plate; 14. Mating block; 2. Clamping seat; 21. Top extension spring; 22. Clamping block; 23. Triangular block; 24. Mounting hole one; 25. Mounting hole two; 3. Positioning unit; 31. Positioning plate; 311. Insert plate; 32. Pressurizing assembly; 321. Slide plate; 322. Elastic pressure rod; 33. Pressure plate; 331. Synchronizing rod; 34. Locking plate; 35. Mating rod; 4. Pre-clamping unit; 41. Arc-shaped clamping plate; 42. Abutting assembly; 421. Reciprocating plate; 422. Elastic abutting rod; 423. Return spring; 43. Reciprocating rod. Detailed Implementation

[0029] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0030] See Figure 1 A machining fixture for washing machine parts includes a worktable 1, which includes an intermittently rotating rotary table 11. Multiple circumferentially evenly arranged clamping seats 2 are mounted on the rotary table 11. A clamping hole is opened in the middle of the clamping seat 2. A positioning unit 3 and a pre-clamping unit 4 are installed on the clamping seat 2 from top to bottom. The intermittent rotation of the rotary table 11 is driven by a motor built into the worktable 1, which in turn drives the pulley on the clamping seat 2 to rotate sequentially to the drilling station and the tapping station. The upper end of the clamping hole passes through the clamping seat 2, so that the shoulder area of ​​the pulley to be processed is not blocked.

[0031] See Figure 3 and Figure 4 The pre-clamping unit 4 includes two symmetrically arranged arc-shaped clamping plates 41 concentrically distributed within the clamping hole. The arc-shaped clamping plates 41 are connected to the clamping seat 2 via a clamping assembly 42. The clamping assembly 42 can drive the arc-shaped clamping plates 41 to elastically clamp the mounting shaft of the pulley. A reciprocating rod 43 is installed on the clamping assembly 42. The pre-clamping unit 4 can quickly pre-clamp pulleys of different sizes and specifications, thereby increasing the applicability of the present invention and ensuring the processing efficiency of pulleys of different sizes and specifications. In addition, the pre-clamping unit 4 can also straighten the mounting shaft of the pulley back and forth to achieve axial alignment of the pulley and ensure the processing accuracy of the pulley.

[0032] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The positioning unit 3 includes two symmetrically arranged positioning plates 31 distributed in the clamping holes. The positioning plates 31 are connected to the clamping seat 2 through a pressure assembly 32. The pressure assembly 32 can drive the positioning plates 31 to elastically abut against both sides of the shaft shoulder of the pulley. A U-shaped pressure plate 33 is installed on both pressure assemblies 32. The pressure plate 33 is connected to the clamping seat 2 through a locking plate 34. The locking plate 34 is slidably installed on the side of the upper end of the clamping seat 2 near the middle of the rotary table 11. A mating rod 35 is fixedly installed at the rear end of the locking plate 34. A mating plate 13 and a mating block 14 are installed on the worktable 1 through a connecting assembly 12. The positioning unit 3 can position the shaft shoulder of the pulley so that the shaft shoulder of the pulley faces directly upward, further ensuring the machining accuracy of the pulley. In addition, the positioning unit 3 can also clamp and fix the shaft shoulder of the pulley, thereby increasing the stability during the machining of the pulley.

[0033] Specifically, when drilling and tapping are required on the pulley, the operator first inserts the pulley's mounting shaft (with the shoulder facing upwards) into the clamping hole of the clamping seat 2 located on the front side, and makes the pulley hub fit against the front end of the clamping seat 2. The arc-shaped clamping plate 41 is elastically clamped on the outside of the pulley's mounting shaft under the action of the clamping group 42. At the same time, the aligning plate 31 abuts against the left and right sides of the pulley's shoulder under the action of the pressure group 32. Then, the rotary table 11 is controlled to start driving the clamping seat 2 to rotate intermittently. During this process, the reciprocating rod 43 and the mating block 14 cooperate to drive the corresponding arc-shaped clamping plate 41 to move back and forth through the clamping group 42, so that the arc-shaped clamping plate 41 can straighten the pulley's mounting shaft back and forth. At the same time, the mating plate 13 and the mating rod 35 cooperate to drive the locking plate 34 to move away from the center of the rotary table 11.

[0034] As the locking plate 34 moves the pressure plate 33, the pressure plate 33 gradually increases the contact force between the aligning plate 31 and the pulley shoulder through the pressure assembly 32. When the pulley is circumferentially misaligned, the aligning plate 31 on the misaligned side of the pulley shoulder applies a larger contact force to the pulley shoulder, while the aligning plate 31 on the other side applies a smaller contact force to the pulley shoulder. Under the contact force of the two aligning plates 31, the pulley shoulder is driven to rotate, thereby achieving circumferential alignment of the pulley. Then, the locking plate 34 locks the position of the aligning plate 31, so that the two aligning plates 31 clamp and fix the pulley shoulder.

[0035] Next, the clamping seat 2 drives the pulley to rotate intermittently to the left, rear and right sides in sequence, and starts the external drilling device, tapping device and feeding device to drill, tap and feed the pulley in sequence. Finally, the rotary table 11 is controlled to drive the clamping seat 2 to rotate intermittently to the front side and repeat the above steps.

[0036] To further increase the machining accuracy of the pulley, the present invention adopts the following structure: (See reference) Figure 3At one end of the clamping seat 2 away from the center of the rotary table 11, a plurality of circumferentially arranged clamping blocks 22 are radially slidably mounted via a top extension spring 21. Triangular blocks 23 are fixedly mounted on opposite sides of each clamping block 22, and the triangular blocks 23 can clamp the hub of the pulley onto the clamping seat 2. When the pulley mounting shaft is inserted into the clamping hole of the clamping seat 2, the hub of the pulley can cooperate with the front inclined surface of the triangular block 23 to push the plurality of clamping blocks 22 to move towards opposite sides. When the hub of the pulley abuts against the clamping block 2, the clamping blocks 22 move towards opposite sides. When the front end of the holding seat 2 is in place, the hub of the pulley moves to the corresponding position on the rear inclined surface of the triangular block 23. Under the action of the clamping block 22 and the extension spring 21, the triangular block 23 can be driven to press against the outside of the pulley hub of different sizes and specifications. Under the action of the rear inclined surface of the triangular block 23, it is ensured that the hub of the pulley always contacts the clamping seat 2. When it is necessary to unload the processed pulley, the pulley is moved away from the clamping seat 2 so that the mounting shaft of the pulley can be moved out of the clamping hole.

[0037] To enable the arc-shaped clamping plate 41 to quickly clamp pulleys of different sizes and specifications, the present invention employs the following structure: (See reference) Figure 3 , Figure 4 and Figure 5 The clamping seat 2 has mounting holes 24 corresponding to the arc-shaped clamping plates 41. The clamping assembly 42 includes a reciprocating plate 421 slidably installed in the mounting holes 24. The reciprocating plate 421 is slidably connected to the corresponding arc-shaped clamping plate 41 through an elastic clamping rod 422. The two arc-shaped clamping plates 41 have inclined surfaces on opposite sides. Several balls are installed on opposite sides of the two arc-shaped clamping plates 41. The clamping seat 2 has mounting holes 25 corresponding to the positioning plates 31. The pressure assembly 32 includes a sliding plate 321 slidably installed in the mounting holes 25. The sliding plate 321 is slidably connected to the corresponding positioning plates 31 through an elastic pressure rod 322. The two positioning plates 31 have inclined surfaces on opposite sides.

[0038] Specifically, when the pulley mounting shaft is inserted into the clamping hole of the clamping seat 2, the pulley mounting shaft can push the two arc-shaped clamping plates 41 to move towards opposite sides through the inclined surface of the arc-shaped clamping plate 41. Under the action of the elastic clamping rod 422, the arc-shaped clamping plate 41 can elastically clamp the pulley mounting shaft. The pulley shaft shoulder can push the two positioning plates 31 to move towards opposite sides through the inclined surface of the positioning plate 31. Under the action of the elastic pressure rod 322, the positioning plate 31 can elastically abut against the left and right sides of the pulley shaft shoulder. Under the action of the balls, the friction between the pulley mounting shaft and the arc-shaped clamping plate 41 can be reduced to ensure smooth movement of the pulley mounting shaft. When the arc-shaped clamping plate 41 moves back and forth, under the action of the balls, it prevents the friction between the arc-shaped clamping plate 41 and the pulley mounting shaft from being too large, which would aggravate the axial angle deviation of the pulley mounting shaft.

[0039] See Figure 2 and Figure 4 The reciprocating rod 43 is fixedly installed at one end of the reciprocating plate 421 near the middle of the rotary table 11. A return spring 423 is connected between the reciprocating plate 421 and the mounting hole 24. The connecting assembly 12 includes connecting rings 121 concentrically distributed above the rotary table 11. The connecting rings 121 are connected to the worktable 1 through a U-shaped connecting rod. The mating block 14 is fixedly installed on the outer front end of the connecting ring 121. Multiple mating blocks 14 are provided, and their outer sides are arc-shaped. When the clamping seat 2 drives the reciprocating rod 43 to rotate... When the mating block 14 comes into contact and continues to rotate, the arc-shaped structure of the mating block 14 pushes the reciprocating rod 43 to move away from the center of the rotary table 11. The reciprocating rod 43 drives the corresponding arc-shaped clamping plate 41 to move through the reciprocating plate 421 and stretches the return spring 423. When the reciprocating rod 43 and the mating block 14 separate, the reciprocating plate 421 returns to its initial position under the action of the return spring 423. There are multiple mating blocks 14, so that the arc-shaped clamping plate 41 straightens the pulley mounting shaft back and forth multiple times.

[0040] To ensure precise circumferential alignment of the shoulders of the pulleys on the alignment plate 31, this invention employs the following structure: (See attached diagram) Figure 2 , Figure 4 and Figure 5 The pressure plate 33 has two symmetrically arranged guide grooves, and a synchronizing rod 331 is slidably installed in the guide grooves. The lower end of the synchronizing rod 331 slides through the clamping seat 2 and is fixedly connected to the upper end of the corresponding slide plate 321. When the pressure plate 33 moves away from the middle of the rotary table 11, the guide grooves and the synchronizing rod 331 cooperate to drive the two slide plates 321 to move to the opposite side. The ends of the two guide grooves away from the middle of the rotary table 11 are arranged in an inclined direction away from each other, and the ends of the two guide grooves close to the middle of the rotary table 11 are arranged along the length of the clamping seat 2. The mating plate 13 has an arc-shaped structure and is fixedly installed on the outside of the connecting ring 121. The front end of the mating plate 13 has an inclined surface that cooperates with the mating rod 35.

[0041] Specifically, when the clamping seat 2 drives the mating rod 35 to rotate until it contacts the inclined surface of the mating plate 13 and continues to rotate, the inclined surface of the mating plate 13 pushes the mating rod 35 to move away from the center of the rotary table 11. The mating rod 35 drives the pressure plate 33 to move through the locking plate 34. The inclined structure of the guide groove and the synchronous rod 331 work together to drive the two slide plates 321 to move to opposite sides, reducing the distance between the slide plates 321 and the positioning plate 31, thereby increasing the compression of the elastic pressure rod 322, and continuously increasing the contact force applied by the positioning plate 31 to the pulley shoulder. Then, the synchronous rod 331 moves into the structure of the guide groove arranged along the length direction of the clamping seat 2, so that the two positioning plates 31 continuously apply a large contact force to the pulley shoulder.

[0042] To further ensure the precise circumferential alignment of the alignment plate 31 with the pulley shoulder and to fix the alignment plate 31 to the aligned pulley shoulder, the present invention adopts the following structure: (See attached diagram) Figure 5 , Figure 6 and Figure 7 Multiple evenly arranged locking slots are provided at the lower end of the locking plate 34 corresponding to the position of the positioning plate 31. The front end of each locking slot is set as a flared structure. An insert plate 311 is fixedly installed at the upper end of the positioning plate 31. When the positioning plate 31 moves forward, the insert plate 311 can be inserted into the corresponding locking slot to lock the position of the positioning plate 31. When the synchronizing rod 331 starts to move into the structure arranged along the length of the guide groove along the clamping seat 2, the locking plate 34 starts to move to the position corresponding to the insert plate 311. As the locking plate 32 continues to move away from the middle of the rotary table 11, the insert plate 311 starts to be inserted into the corresponding locking slot. When the pulley still has a slight circumferential deviation, the insert plate 311 can cooperate with the flared structure of the locking slot to achieve precise circumferential alignment of the pulley. After the insert plate 311 is inserted into the corresponding locking slot, the insert plate 311 and the locking slot cooperate to lock the position of the positioning plate 31, so that the positioning plate 31 fixes the shoulder of the aligned pulley shaft.

[0043] In this invention, the elastic clamping and axial alignment of the pulley mounting shaft by the clamping assembly 421 and the arc-shaped clamping plate 4, and the elastic contact and circumferential alignment of the two sides of the pulley shaft shoulder by the pressure assembly 32 and the alignment plate 31, enable the pulley to be accurately calibrated in both axial and circumferential positions after two alignments. This eliminates the need for manual calibration of the pulley position and effectively avoids the problem of skewing during hole machining. At the same time, this fixture can be adapted to pulleys of different sizes and specifications, enabling rapid clamping and machining, and significantly improving production efficiency.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A machining fixture for washing machine parts, comprising a worktable, the worktable including an intermittently rotating rotary table, and a plurality of circumferentially evenly arranged clamping seats mounted on the rotary table, each clamping seat having a clamping hole in its center, characterized in that, The clamping base is equipped with a positioning unit and a pre-clamping unit from top to bottom; The pre-clamping unit includes two symmetrically arranged arc-shaped clamping plates concentrically distributed in the clamping hole. The arc-shaped clamping plates are connected to the clamping seat through a clamping assembly. The clamping assembly can drive the arc-shaped clamping plates to elastically clamp the mounting shaft of the pulley. A reciprocating rod is installed on the clamping assembly. The positioning unit includes two symmetrically arranged positioning plates distributed in the clamping hole. The positioning plates are connected to the clamping seat through a pressure assembly. The pressure assembly can drive the positioning plates to elastically abut against both sides of the shaft shoulder of the pulley. A U-shaped pressure plate is installed on both pressure assemblies. The pressure plate is connected to the clamping seat through a locking plate. The locking plate is slidably installed on the side of the upper end of the clamping seat near the middle of the rotary table. A matching rod is fixedly installed at the rear end of the locking plate. The worktable is equipped with a mating plate and a mating block via a connecting assembly. When the rotary table rotates, the mating block and the reciprocating rod work together to drive the arc-shaped clamping plate to straighten the mounting shaft of the pulley. The mating plate can work with the mating rod to increase the clamping force of the positioning plate on the pulley shaft shoulder, thereby achieving circumferential alignment of the pulley. Subsequently, the locking plate locks the position of the positioning plate, so that the positioning plate clamps and fixes the shaft shoulder of the pulley.

2. The machining fixture for washing machine parts according to claim 1, characterized in that, The clamping seat has multiple circumferentially arranged clamping blocks that are radially slidably installed at one end away from the center of the rotary table via a top extension spring. Triangular blocks are fixedly installed on opposite sides of the multiple clamping blocks, and the triangular blocks can clamp the hub of the pulley onto the clamping seat.

3. A machining fixture for washing machine parts according to claim 1, characterized in that, The clamping seat has mounting holes corresponding to the arc-shaped clamping plates. The clamping assembly includes a reciprocating plate that is slidably installed in the mounting hole. The reciprocating plate is slidably connected to its corresponding arc-shaped clamping plate through an elastic clamping rod. The two arc-shaped clamping plates have inclined surfaces on opposite sides, and several balls are installed on opposite sides of the two arc-shaped clamping plates.

4. A machining fixture for washing machine parts according to claim 3, characterized in that, The reciprocating rod is fixedly installed at one end of the reciprocating plate near the center of the rotary table, and a return spring is connected between the reciprocating plate and the mounting hole.

5. A machining fixture for washing machine parts according to claim 1, characterized in that, The clamping seat has two mounting holes that correspond one-to-one with the positioning plate. The pressure assembly includes a sliding plate that is slidably installed in the two mounting holes. The sliding plate is slidably connected to the corresponding positioning plate through an elastic pressure rod. Both positioning plates have inclined surfaces on opposite sides.

6. A machining fixture for washing machine parts according to claim 5, characterized in that, The pressure plate has two symmetrically arranged guide grooves. A synchronizing rod is slidably installed in the guide groove. The lower end of the synchronizing rod slides through the clamping seat and is fixedly connected to the upper end of the corresponding slide plate. When the pressure plate moves away from the center of the rotary table, the guide groove and the synchronizing rod work together to drive the two slide plates to move to the opposite side.

7. A machining fixture for washing machine parts according to claim 6, characterized in that, The two guide grooves are arranged at an angle away from the center of the rotary table, and at the end of the two guide grooves near the center of the rotary table, they are arranged along the length of the clamping seat.

8. A machining fixture for washing machine parts according to claim 1, characterized in that, The lower end of the locking plate is provided with multiple evenly arranged locking slots corresponding to the position of the positioning plate. An insert plate is fixedly installed on the upper end of the positioning plate. When the positioning plate moves forward, the insert plate can be inserted into the corresponding locking slot to lock the position of the positioning plate.

9. A machining fixture for washing machine parts according to claim 8, characterized in that, The front end of each locking groove is configured with a flared structure. When the pulley is still circumferentially misaligned, the insert plate can cooperate with the flared structure of the locking groove to achieve precise circumferential alignment of the pulley.

10. A machining fixture for washing machine parts according to claim 1, characterized in that, The connecting group includes connecting rings concentrically distributed above the rotary table. The connecting rings are connected to the worktable through U-shaped connecting rods. The mating plate has an arc-shaped structure and is fixedly installed on the outside of the connecting ring. The front end of the mating plate has an inclined surface that mates with the mating rod. The mating block is fixedly installed on the front end of the outside of the connecting ring. Multiple mating blocks are provided, and their outer sides are set to be arc-shaped.

Images