A clamping device for lathe machining

Abstract

A clamping device for lathe machining addresses the technical problem mentioned in the background art: in existing clamping devices, after milling bearing holes, operators need to loosen the mold's fixation on the bearing seat using bolts before the bearing seat can be removed from the mold. When large-scale machining of bearing seats is required, frequent disassembly leads to increased production time and reduced production efficiency. The device includes a placement table with a first clamping mold and a second clamping mold. The first clamping mold is fixed to a dovetail groove for clamping the bearing seat. The second clamping mold is slidably disposed on the placement table, opposite to the first clamping mold. A clamping drive assembly is provided on the placement table to drive the second clamping mold to move towards the first clamping mold to clamp the bearing seat. A clamping block is provided on the placement table. The first clamping mold has a clearance groove. A clamping drive assembly is provided on the placement table to drive the clamping block to pass through the clearance groove and press down on the bearing seat.

Description

Technical Field

[0001] This utility model relates to the field of workpiece clamping technology, specifically to a clamping device for lathe machining. Background Technology

[0002] As a core positioning component in mechanical assembly, bearing housing bores require specific assembly processes to match different bearing types. When assembling sliding bearings, integral, split, and inner column outer tapered bearing housing bores require interference fits, scraping adjustments, and clearance control, respectively. Rolling bearing assembly requires ensuring the positioning accuracy of the inner and outer rings and adapting to structural differences such as non-separable and thrust ball bearings. In shaft assembly, the machining accuracy of the bearing housing bores directly affects the selection of the fixing method and the rotational stability of the spindle.

[0003] like Figure 4 As shown in the diagram, when the bearing hole 22 needs to be precision machined, the existing technology generally places the bearing housing 21 on the lathe base using a mold, and then fixes the mold to the lathe base with bolts. After milling the bearing hole 22, the operator needs to remove the mold from the bearing housing 21 before the bearing housing 21 can be removed from the mold. When large-scale machining of the bearing housing 21 is required, frequent disassembly will increase production time and reduce production efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamping device for lathe machining. This device solves the technical problem mentioned in the background art: after milling the bearing hole, the operator needs to use bolts to release the mold from the bearing seat before the bearing seat can be removed from the mold. When large-scale machining of bearing seats is required, frequent disassembly leads to increased production time and reduced production efficiency.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A clamping device for lathe machining includes a placement table with a plurality of dovetail grooves on its surface. A first clamping mold and a second clamping mold are provided on the placement table. The first clamping mold is fixedly mounted on the dovetail grooves for clamping a bearing seat. The second clamping mold is slidably mounted on the placement table and is arranged opposite to the first clamping mold. A clamping drive assembly is provided on the placement table for driving the second clamping mold to move toward the first clamping mold to clamp the bearing seat. A clamping block is provided on the placement table. An clearance groove is formed on the first clamping mold. A clamping drive assembly is provided on the placement table for driving the clamping block to pass through the clearance groove and press down on the bearing seat.

[0007] Working principle:

[0008] The operator places the bearing housing in the first clamping mold fixed on the dovetail groove. Then, the operator activates the clamping drive assembly, which drives the second clamping mold to slide towards the first clamping mold. Thus, the second clamping mold and the first clamping mold together clamp the side wall of the bearing housing. Subsequently, the operator activates the clamping drive assembly, which drives the clamping block to rotate and slide into the clearance groove of the first clamping mold. The end of the clamping block contacts the top of the bearing housing and applies vertical downward pressure. After the bearing hole of the bearing housing is machined, the operator activates the clamping drive assembly and the clamping drive assembly in sequence. Finally, the operator removes the bearing housing from between the first clamping mold and the second clamping mold.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] First, a clamping drive assembly is provided, which can drive the second clamping mold to move toward the first clamping mold, so that the second clamping mold and the first clamping mold together clamp the side wall of the bearing seat, simplifying the operation process of clamping the bearing seat.

[0011] Secondly, a clamping drive assembly is provided, which can drive the clamping block to pass through the clearance groove and directly apply pressure to the top of the bearing seat. Thus, through the synchronous action of the vertical downward pressure of the clamping block and the clamping force of the lateral second clamping mold, the vibration generated during the turning of the bearing seat is suppressed, and the milling accuracy of the bearing hole is improved. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 2 for Figure 1 Enlarged cross-sectional view of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the assembly structure of the second cylinder and the clamping block;

[0015] Figure 4 This is a schematic diagram of the bearing housing.

[0016] Explanation of reference numerals in the attached drawings: 1. Placement platform; 2. Dovetail groove; 3. First clamping mold; 4. Second clamping mold; 5. Pressing block; 6. Clearance groove; 7. Mounting block; 8. Slide groove; 9. Guide rod; 10. Sliding block; 11. First rotating rod; 12. Fixed block; 13. Second rotating rod; 14. Connecting block; 15. Connecting rod; 16. First cylinder; 17. Second cylinder; 18. Fixed seat; 19. Linkage block; 20. Buffer block; 21. Bearing seat; 22. Bearing hole. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example:

[0019] like Figure 1 and Figure 2 and Figure 4 As shown, a clamping device for lathe machining includes a placement table 1 with a plurality of dovetail grooves 2 on its surface. A first clamping mold 3 and a second clamping mold 4 are mounted on the placement table 1. The first clamping mold 3 is fixedly mounted on the dovetail grooves 2 for clamping a bearing seat 21. The second clamping mold 4 is slidably mounted on the placement table 1, opposite to the first clamping mold 3. Two symmetrically placed mounting blocks 7 are fixedly mounted on the placement table 1. Each mounting block 7 has a sliding groove 8 and a guide rod 9 penetrating the sliding groove 8. Both ends of the second clamping mold 4 are fixedly mounted with… There is a sliding block 10, and two sliding blocks 10 are respectively slidably sleeved on two guide rods 9 and slidably connected to two corresponding sliding grooves 8. The bearing seat 21 is placed on the fixed first clamping mold 3. The second clamping mold 4 slides along the placement platform 1 through the cooperation of the sliding block 10 and the guide rod 9, and moves to the clamping position of the first clamping mold 3. The dovetail groove 2 provides a rigid fixing reference for the first clamping mold 3. The setting of the guide rod 9 and the sliding groove 8 ensures that the sliding trajectory of the second clamping mold 4 is straight, avoiding uneven clamping caused by skewing.

[0020] like Figure 1 As shown, the placement platform 1 is equipped with a clamping drive assembly for driving the second clamping mold 4 to move towards the first clamping mold 3 to clamp the bearing seat 21. The clamping drive assembly includes a first rotating rod 11, a fixed block 12, a second rotating rod 13, a connecting block 14, a connecting rod 15, and a first cylinder 16. The first rotating rod 11 is rotatably mounted on the end of the second clamping mold 4, the fixed block 12 is fixedly mounted on the placement platform 1, the second rotating rod 13 is rotatably mounted on the fixed block 12, the connecting block 14 is fixedly mounted on the telescopic end of the first cylinder 16, and the connecting rod 15 is slidably disposed through the connecting block 14, the first rotating rod 11, and the second rotating rod 13. Between them, the first cylinder 16 extends, pushing the connecting block 14 forward and driving the connecting rod 15 to move. The moving connecting rod 15 pushes the first rotating rod 11 to rotate. The first rotating rod 11 drives the second clamping mold 4 to slide, thereby moving along the guide rod 9 through the sliding block 10 until it clamps the bearing seat 21. The second rotating rod 13 assists the connecting rod 15 in maintaining the horizontal thrust direction, eliminating the need for traditional bolt locking and reducing operation time. The first rotating rod 11 and the second rotating rod 13 convert the linear thrust of the cylinder into a horizontal clamping force, reducing mechanical loss. The sliding design of the connecting rod 15 adapts to changes in the angle of the rotating rod, preventing the mechanism from jamming.

[0021] like Figure 1 and Figure 4As shown, a clamping block 5 is provided on the placement platform 1, and a clearance groove 6 is provided on the first clamping mold 3. A clamping drive assembly is provided on the placement platform 1 for driving the clamping block 5 to pass through the clearance groove 6 and press down on the bearing seat 21. The clamping drive assembly includes a second cylinder 17 and a linkage assembly. The second cylinder 17 is fixed on the placement platform 1, and the linkage assembly is used to connect the second cylinder 17 and the clamping block 5. When the second cylinder 17 extends or retracts, it drives the clamping block 5 to rotate and pass through the clearance groove 6 through the linkage assembly. The linkage assembly includes a fixed base 18 and a connecting rod. The moving block 19 and the fixed seat 18 are fixed on the cylinder body of the second cylinder 17. One end of the linkage block 19 is rotatably connected to the fixed seat 18. The pressing block 5 is rotatably located on the telescopic end of the second cylinder 17 and is rotatably connected to the end of the linkage block 19 away from the fixed seat 18. The second cylinder 17 extends and pushes the pressing block 5. The linkage block 19 rotates with the fixed seat 18 as the fulcrum, forcing the pressing block 5 to tilt downward. The pressing block 5 passes into the relief groove 6. The buffer block 20 contacts the top of the bearing seat 21 and applies vertical downward pressure to the bearing seat 21 in the first clamping mold 3.

[0022] like Figure 4 As shown, the end face of the clamping block 5 that abuts against the bearing seat 21 is provided with a buffer block 20. The buffer block 20 is made of polyurethane material to prevent damage to the surface of the bearing seat 21. The buffer block 20 automatically compensates for the unevenness of the top surface of the bearing seat 21 to ensure uniform distribution of downward pressure.

[0023] Working principle:

[0024] The operator places the bearing housing 21 on the first clamping mold 3 fixed to the dovetail groove 2, and the second clamping mold 4 is in the initial position away from the bearing housing 21. The clamping block 5 is located outside the clearance groove 6. Then, the first cylinder 16 is activated. The telescopic end of the first cylinder 16 extends and pushes the connecting block 14 to move. The connecting block 14 drives the connecting rod 15 to move synchronously. The connecting rod 15 pushes the first rotating rod 11 to rotate. The second rotating rod 13 assists in constraining the movement trajectory of the connecting rod 15 on the fixed block 12. The first rotating rod 11 drives the second clamping mold 4 to move towards the bearing housing 21. The sliding blocks 10 at both ends of the second clamping mold 4 slide along the guide rod 9. The sliding blocks 10 are linearly displaced in the sliding groove 8 of the mounting block 7. The second clamping mold 4 and the first clamping mold 3 work together to clamp the bearing housing 21.

[0025] Then the operator starts the second cylinder 17. The telescopic end of the second cylinder 17 extends and pushes the clamping block 5 to move. The linkage block 19 rotates with the fixed seat 18 as the fulcrum. The other end of the linkage block 19 pulls the clamping block 5 to tilt it downward. The clamping block 5 slides into the relief groove 6 of the first clamping mold 3 along the tilting trajectory. The buffer block 20 contacts the top of the bearing seat 21 and applies vertical downward pressure.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A clamping device for lathe machining, characterized in that, The device includes a placement platform (1) with several dovetail grooves (2) on its surface. The placement platform (1) is provided with a first clamping mold (3) and a second clamping mold (4). The first clamping mold (3) is fixed on the dovetail grooves (2) and is used to clamp the bearing seat (21). The second clamping mold (4) is slidably disposed on the placement platform (1) and is disposed opposite to the first clamping mold (3). The placement platform (1) is provided with a clamping drive assembly for driving the second clamping mold (4) to move toward the first clamping mold (3) to clamp the bearing seat (21). The placement platform (1) is provided with a pressing block (5). The first clamping mold (3) is provided with a clearance groove (6). The placement platform (1) is provided with a pressing drive assembly for driving the pressing block (5) to pass through the clearance groove (6) and press down on the bearing seat (21).

2. A chucking device for lathe machining according to claim 1, characterized in that: Two symmetrically placed mounting blocks (7) are fixed on the placement platform (1). Each of the two mounting blocks (7) has a sliding groove (8) and a guide rod (9) passing through the sliding groove (8). Both ends of the second clamping mold (4) are fixed with sliding blocks (10), and the two sliding blocks (10) are respectively slidably sleeved on the two guide rods (9) and slidably connected to the two corresponding sliding grooves (8).

3. A chucking device for lathe machining according to claim 2, characterized in that: The clamping drive assembly includes a first rotating rod (11), a fixed block (12), a second rotating rod (13), a connecting block (14), a connecting rod (15), and a first cylinder (16). The first rotating rod (11) is rotatably mounted on the end of the second clamping mold (4). The fixed block (12) is fixed on the placement platform (1). The second rotating rod (13) is rotatably mounted on the fixed block (12). The connecting block (14) is fixed on the telescopic end of the first cylinder (16). The connecting rod (15) is slidably disposed between the connecting block (14), the first rotating rod (11), and the second rotating rod (13).

4. The clamping device for lathe machining according to claim 1, characterized in that: The pressing drive assembly includes a second cylinder (17) and a linkage assembly. The second cylinder (17) is fixed on the placement platform (1). The linkage assembly is used to connect the second cylinder (17) and the pressing block (5). When the second cylinder (17) extends or retracts, the linkage assembly drives the pressing block (5) to rotate and pass through the clearance groove (6).

5. A clamping device for lathe machining according to claim 4, characterized in that: The linkage assembly includes a fixed seat (18) and a linkage block (19). The fixed seat (18) is fixed on the cylinder body of the second cylinder (17). One end of the linkage block (19) is rotatably connected to the fixed seat (18). The clamping block (5) is rotatably disposed on the telescopic end of the second cylinder (17) and is rotatably connected to the end of the linkage block (19) away from the fixed seat (18).

6. A clamping device for lathe machining according to claim 5, characterized in that: The end face of the clamping block (5) that abuts against the bearing seat (21) is provided with a buffer block (20).

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