Tool clamp for clamping workpiece with slotted hole in end face

Abstract

The utility model discloses a work fixture for clamping a workpiece with a slotted hole in the end face, which comprises a tensioning shaft, a top ring, a pressing ring and a handle, and the tensioning shaft is sequentially provided with a first mounting shaft, a threaded shaft, a second mounting shaft, a tensioning ring and a third mounting shaft from left to right; the first mounting shaft is mounted on a chuck of a machine tool; a conical groove is formed in the left end face of the tensioning ring, and a cross-shaped groove is formed in the right end face of the third installation shaft. The left end of the hold-down ring is a circular base, the right end of the hold-down ring is a circular frustum, and a center hole is formed in the end face of the hold-down ring. The second mounting shaft is sleeved with the pressing ring, and the right front end of the pressing ring is located in the conical groove; a threaded hole is formed in the center of the top ring, and a plurality of mounting grooves are uniformly distributed in the outer side wall of the top ring; the top ring is mounted on the threaded shaft; the clamp is simple in structure, convenient to install and wide in application range; by changing the diameter of the mounting shaft at the front end, clamping of various slotted holes with different specifications can be met.

Description

Technical Field

[0001] This utility model belongs to the field of tooling fixtures, specifically relating to a tooling fixture for clamping workpieces with slotted end faces. Background Technology

[0002] In machining, some workpieces have slots on their end faces, with the bottom surface of the slots being a flat surface. When the diameter of the slot is small, the common method is to use pins, that is, to first drill a hole, then use a reamer to enlarge the hole, and then use a fixture to clamp the workpiece from the top. However, when the diameter of the slot is large, if pins are used to clamp the slot, the machining of the slot is more difficult due to the high precision requirements of the slot. There is an urgent need for a method that can solve this problem. Utility Model Content

[0003] To address the problems existing in the background art, this utility model provides a tooling fixture for clamping workpieces with slotted end faces.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a tooling fixture for clamping workpieces with slotted end faces, comprising a tensioning shaft, a top ring, a clamping ring, and a handle. The tensioning shaft is provided with a first mounting shaft, a threaded shaft, a second mounting shaft, a tensioning ring, and a third mounting shaft from left to right. The first mounting shaft is mounted on the chuck of a machine tool. The left end face of the tensioning ring is provided with a tapered groove. The third mounting shaft is adapted to the workpiece slot, and the right end face of the third mounting shaft is provided with a cross groove.

[0005] The left end of the clamping ring is a circular base, and the right end of the clamping ring is a circular truncated cone. The end face of the clamping ring is provided with a central hole. The outer wall of the truncated cone is adapted to the conical groove of the tensioning ring. The clamping ring is sleeved on the second mounting shaft, and the right front end of the clamping ring is located in the conical groove. The outer wall of the truncated cone is in contact with the inner wall of the conical groove.

[0006] The top ring is a circular ring with a threaded hole at its center. Multiple mounting grooves for mounting handles are evenly distributed on the outer side wall of the top ring. The top ring is mounted on a threaded shaft, and the right end face of the top ring is in contact with the left end face of the clamping ring.

[0007] The small end diameter of the frustum is smaller than the opening end diameter of the conical groove, and the large end diameter of the frustum is larger than the opening end diameter of the conical groove.

[0008] The diameter of the center hole of the clamping ring is 3-4 mm larger than the outer diameter of the second mounting shaft.

[0009] The width of the cross groove is 0.2-1mm, and the depth of the cross groove is greater than the distance between the right end face of the top ring and the left end face of the second mounting shaft.

[0010] The outer diameter of the first mounting shaft is smaller than the outer diameter of the threaded shaft, and the outer diameter of the threaded shaft is smaller than the outer diameter of the second mounting shaft.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a tooling fixture for clamping workpieces with slotted end faces. The fixture has a simple structure, is easy to install, and has a wide range of applications. By changing the diameter of the front mounting shaft, it can meet the clamping requirements of slots of various specifications. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention.

[0013] Figure 2 This is a schematic diagram of the tensioning shaft.

[0014] Figure 3 This is a schematic diagram of the tensioning shaft.

[0015] Figure 4 This is a schematic diagram of the top ring.

[0016] Figure 5 This is a schematic diagram of the clamping ring.

[0017] In the diagram: 1. Tensioning shaft, 2. Top ring, 3. Pressure ring, 4. Workpiece slot, 5. Handle, 11. First mounting shaft, 12. Threaded shaft, 13. Second mounting shaft, 14. Tensioning ring, 15. Third mounting shaft, 16. Cross groove, 17. Tapered groove, 21. Threaded hole, 22. Mounting groove, 31. Center hole, 32. Frustum, 33. Base. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] The following detailed description of the specific embodiments of this utility model, in conjunction with the accompanying drawings, further illustrates the following: A tooling fixture for clamping workpieces with slotted end faces includes a tensioning shaft 1, a top ring 2, a clamping ring 3, and a handle 5. The tensioning shaft 1, from left to right, is provided with a first mounting shaft 11, a threaded shaft 12, a second mounting shaft 13, a tensioning ring 14, and a third mounting shaft 15. The outer diameter of the first mounting shaft 11 is smaller than the outer diameter of the threaded shaft 12, and the outer diameter of the threaded shaft 12 is smaller than the outer diameter of the second mounting shaft 13, to facilitate the installation of the top ring 2 and the clamping ring 3. The first mounting shaft 11 is mounted on the chuck of a machine tool. The left end face of the tensioning ring 14 is provided with a tapered groove 17. The third mounting shaft 15... The third mounting shaft 15 is adapted to the workpiece slot 4 of the workpiece. A cross groove 16 is provided on the right end face of the third mounting shaft 15. The width of the cross groove 16 is 0.2-1mm, and the depth of the cross groove 16 is greater than the distance between the right end face of the top ring 2 and the left end face of the second mounting shaft 13. In actual use and processing, for ease of processing, the cross groove 16 is generally machined by wire cutting. The depth of the cross groove 16 should be sufficiently deep while maintaining the structural stability of the top ring 2. The left end of the clamping ring 3 is a circular base 33, and the right end of the clamping ring 3 is a circular truncated cone 32. A central hole 31 is provided on the end face of the clamping ring 3. The diameter of the central hole 31 of the clamping ring 3 is greater than... The outer diameter of the second mounting shaft 13 is 3-4 mm. During use, as the clamping ring 3 moves to the right, the truncated cone 32 enters the conical groove 17, and the truncated cone 32 expands the right end of the tensioning shaft 1. At this time, the outer diameter of the second mounting shaft 13 will also increase. The center hole 31 of the clamping ring 3 is larger than the outer diameter of the second mounting shaft 13 to avoid interference between the center hole 31 and the second mounting shaft 13. The outer wall of the truncated cone 32 is adapted to the conical groove 17 of the tensioning ring 14. The clamping ring 3 is sleeved on the second mounting shaft 13, and the right front end of the clamping ring 3 is located in the conical groove 17. The outer wall of the truncated cone 32 is in contact with the inner wall of the conical groove 17. The small end diameter of the truncated cone 32 is smaller than that of the conical groove 17. The diameter of the opening end of the cone 32 is larger than the diameter of the opening end of the conical groove 17. In actual use, the diameter of the small end of the cone 32 is generally 1-2 mm smaller than the diameter of the opening end of the conical groove 17, so that the front end of the cone 32 can extend into the conical groove 17 and prevent the cone 32 from sliding out of the conical groove 17. The top ring 2 is a circular ring with a threaded hole 21 at its center. Multiple mounting slots 22 for mounting the handle 5 are evenly distributed on the outer side wall of the top ring 2. In actual use, the mounting slots 22 are usually threaded holes to facilitate the installation of the handle 5. The top ring 2 is mounted on the threaded shaft 12, and the right end face of the top ring 2 is in contact with the left end face of the clamping ring 3.

[0020] The usage process of this utility model is as follows: First, the clamping ring 3 is fitted onto the second mounting shaft 13, with the right front end of the clamping ring 3 located inside the conical groove 17, and the outer wall of the cone 32 in contact with the inner wall of the conical groove 17; the small end diameter of the cone 32 is generally 1-2 mm smaller than the opening end diameter of the conical groove 17, so that the front end of the cone 32 can extend into the conical groove 17, preventing the cone 32 from sliding out of the conical groove 17; then, the top ring 2 is installed on the threaded shaft 12, with the right end face of the top ring 2 in contact with the left end face of the clamping ring 3; then, the handle 5 is installed in the mounting groove 22; finally, the first mounting shaft 11 is installed on the chuck of the machine tool, and the third mounting shaft 15 is inserted into the workpiece slot 4; at this time, a gap of about 1 mm should be maintained between the third mounting shaft 15 and the workpiece slot 4; installation After completion, rotate handle 5 to move clamping ring 3 to the right, and the cone 32 enters the conical groove 17. The cone 32 opens the third mounting shaft 15 at the right end of the tensioning shaft 1, so that the outer wall of the third mounting shaft 15 fits tightly with the inner wall of the workpiece slot 4, achieving the effect of fixing the workpiece and completing the clamping. After clamping, start the machine tool to process the workpiece. After the workpiece is processed, rotate handle 5 to move clamping ring 3 to the left, and the cone 32 exits from the conical groove 17. The right end of the tensioning shaft 1 merges with the center, and the outer diameter of the third mounting shaft 15 decreases, so that the outer wall of the third mounting shaft 15 forms a certain gap with the inner wall of the workpiece slot 4. At this time, the processed workpiece can be unloaded. If further processing is required, repeat the above steps. If processing is completed, the machine tool chuck can be loosened, and the entire fixture can be removed for the next use.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0022] The parts of this utility model not described in detail are existing technologies.

Claims

1. A tooling fixture for clamping workpieces with slotted end faces, comprising a tensioning shaft (1), a top ring (2), a clamping ring (3), and a handle (5), characterized in that: The tensioning shaft (1) is provided with a first mounting shaft (11), a threaded shaft (12), a second mounting shaft (13), a tensioning ring (14), and a third mounting shaft (15) from left to right; the first mounting shaft (11) is mounted on the chuck of the machine tool; the tensioning ring (14) has a tapered groove (17) on its left end face; the third mounting shaft (15) is adapted to the workpiece slot (4) of the workpiece; and the third mounting shaft (15) has a cross groove (16) on its right end face. The left end of the clamping ring (3) is a circular base (33), and the right end of the clamping ring (3) is a circular truncated cone (32). The end face of the clamping ring (3) is provided with a central hole (31). The outer wall of the truncated cone (32) is adapted to the conical groove (17) of the tensioning ring (14). The clamping ring (3) is sleeved on the second mounting shaft (13), and the right front end of the clamping ring (3) is located in the conical groove (17). The outer wall of the truncated cone (32) is in contact with the inner wall of the conical groove (17). The top ring (2) is a circular ring with a threaded hole (21) at its center. Multiple mounting grooves (22) for mounting handles (5) are evenly distributed on the outer side wall of the top ring (2). The top ring (2) is mounted on the threaded shaft (12), and the right end face of the top ring (2) is in contact with the left end face of the clamping ring (3).

2. The tooling fixture for clamping workpieces with slotted end faces according to claim 1, characterized in that: The small end diameter of the frustum (32) is smaller than the opening end diameter of the conical groove (17), and the large end diameter of the frustum (32) is larger than the opening end diameter of the conical groove (17).

3. The tooling fixture for clamping workpieces with slotted end faces according to claim 1, characterized in that: The diameter of the center hole (31) of the clamping ring (3) is 3-4 mm larger than the outer diameter of the second mounting shaft (13).

4. The tooling fixture for clamping workpieces with slotted end faces according to claim 1, characterized in that: The width of the cross groove (16) is 0.2-1mm, and the depth of the cross groove (16) is greater than the distance between the right end face of the top ring (2) and the left end face of the second mounting shaft (13).

5. The tooling fixture for clamping workpieces with slotted end faces according to claim 1, characterized in that: The outer diameter of the first mounting shaft (11) is smaller than the outer diameter of the threaded shaft (12), and the outer diameter of the threaded shaft (12) is smaller than the outer diameter of the second mounting shaft (13).

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