Positioning clamp for sleeve outer circle chamfering machining

Abstract

A sleeve outer circle chamfering positioning fixture, including sleeve, sleeve is equipped with cover, cover is equipped with perforation, perforation is equipped with end shaft, end shaft is equipped with middle shaft, end shaft is equipped with outer nut, outer nut's inside end is tightly on the outer wall of cover, middle shaft is equipped with conical table, conical table is small end, middle shaft's other end is equipped with end connecting shaft, end connecting shaft is connected with inner top nut, inner top nut acts on the outside end of conical table. Sleeve is equipped with limit slot, limit slot is equipped with ejector block, the outside end of ejector block is installed with positioning block, the outside end of positioning block is equipped with anti-skid tooth, the inside end of ejector block is shaped with inclined plane, sleeve is equipped with limit ring. Can move to the inside through the rotation of inner top nut with conical table, thereby through the outside of conical table acts on ejector block, thereby through the positioning block of ejector block or through the screw fixed in the outside end of ejector block to the ring piece of different size is positioned, limit ring can lock the position of ring piece.

Description

Technical Field

[0001] This utility model relates to the field of cemented carbide processing technology, and in particular to a positioning fixture for chamfering the outer circle of a sleeve. Background Technology

[0002] like Figure 4 The image shows an existing positioning fixture, which includes a positioning sleeve 1 with multiple notches and a limiting protrusion 13 formed thereon. One end of the positioning sleeve 1 has an end cap 11, and a core rod 15 passes through the end cap 11. One end of the core rod 15 has a first end rod 16, which is threadedly connected to a clamping nut 17. The inner end of the clamping nut 17 acts on the end cap 11. The other end of the core rod 15 has a second end rod 18. An inner top nut 20 is threaded onto rod 18. An inner top ring 19 is located on the inner end of the inner top nut 20. A movable column 14 is sleeved on the core rod 15. The inner end of the inner top ring 19 acts on the outer end of the movable column 14. The inner wall of the positioning sleeve 1 is formed with a conical wall 10, with the inner end of the conical wall 10 being the smaller end. The outer periphery of the movable column 14 has a conical structure, which matches the conical wall 10. A limiting ring 13 is formed on the outer periphery of the positioning sleeve 1. The method of chamfering the end of the ring by positioning it using the elastic positioning sleeve 1 has several drawbacks. First, the positioning sleeve 1 has a short service life; it easily deforms with increased use, affecting the positioning effect. Second, the size of the ring that can be positioned is relatively fixed; if it is too large, positioning will fail. Furthermore, because the position of the limiting ring 13 is fixed, it cannot accommodate the processing of rings of other sizes. Utility Model Content

[0003] This utility model provides a positioning fixture for chamfering the outer circle of a sleeve, which solves the shortcomings of the prior art, addresses the problems of short service life and limited applicability of existing positioning fixtures, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A positioning fixture for chamfering the outer diameter of a sleeve includes a sleeve. One end of the sleeve has a cap with a through hole. An end shaft passes through the through hole, and a central shaft is located on the inner end of the end shaft. An outer nut is mounted on the end shaft, and its inner end is pressed against the outer wall of the cap. A truncated cone is fitted on the central shaft, with its inner end being the smaller end. The other end of the central shaft has an end connecting shaft, on which an inner top nut is threaded. The inner end of the inner top nut acts on the outer end of the truncated cone. One end of the sleeve has multiple limiting grooves, and an ejector block passes through each limiting groove. A positioning block is installed on the outer end of the ejector block, and its outer end has anti-slip teeth. The inner end of the ejector block has a beveled surface that acts on the conical wall of the truncated cone. A limiting ring is fitted on the sleeve. The cone can be moved inward by rotating the inner top nut, thereby acting on the ejector block through the outer circumference of the cone. The rings of different sizes can be positioned by the ejector block or by a positioning block fixed to the outer end of the ejector block with screws. The position-adjustable limit ring can lock the position of the ring.

[0006] Furthermore, the inner wall of the perforation is provided with multiple slots, and one end of the central shaft is provided with multiple retaining plates. The retaining plates are inserted into the slots. Through the arrangement of the slots and retaining plates, the central shaft can be prevented from rotating when the tightening nut is rotated.

[0007] Furthermore, in order to guide the movement of the truncated cone, multiple limiting teeth are provided on the inner circumference of the truncated cone, and guide grooves are provided on the outer circumference of the central shaft, with the limiting teeth passing through the guide grooves.

[0008] Furthermore, to prevent the ejector block from falling off, a waist-shaped hole is provided on the ejector block, and a limiting screw is inserted into the waist-shaped hole and installed on the sleeve.

[0009] Furthermore, in order to adjust the position of the limiting ring to process rings of different lengths, an outer flange is provided at the end where the sleeve cap is located. A pair of lead screws are provided on the outer flange. One end of the lead screw is provided with an end cap and a limiting nut is provided on the lead screw. The limiting nut is located inside the outer flange, and the end cap is located outside the outer flange. The other end of the lead screw is connected to a moving post by a thread, and the other end of the moving post is located on the limiting ring.

[0010] Furthermore, when adjusting the position of the limiting ring, in order to guide the movement of the limiting ring, an inner extension sleeve is provided on the inner wall of the limiting ring, and a limiting strip is inserted inside the inner extension sleeve and is located on the sleeve.

[0011] The advantages of the above technical solution are:

[0012] This utility model expands its scope of application to handle the processing of rings of different lengths and inner diameters, thereby broadening its applicability. Attached Figure Description

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0014] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0015] Figure 2 An internal three-dimensional structural diagram of one embodiment is shown.

[0016] Figure 3 An external three-dimensional structural diagram of one embodiment is shown.

[0017] Figure 4 A three-dimensional structural diagram of an existing positioning fixture for machining the outer circle chamfer of a sleeve is shown. Detailed Implementation

[0018] like Figures 1-3 As shown, a positioning fixture for chamfering the outer circle of a sleeve includes a sleeve 3. One end of the sleeve 3 is provided with a cap 31, and a through hole 32 is provided on the cap 31. An end shaft 46 passes through the through hole 32. Multiple slots 33 are provided on the inner wall of the through hole 32. A multiple retaining plates 47 are provided at one end of a central shaft 45, and the retaining plates 47 pass through the slots 33. The inner end of the end shaft 46 is provided with the central shaft 45, and an outer nut 48 is provided on the end shaft 46. The inner side of the outer nut 48... The end is pressed against the outer wall of the cover 31. A truncated cone 50 is sleeved on the central shaft 45. The inner end of the truncated cone 50 is the small end. The other end of the central shaft 45 is provided with an end connecting shaft 7. An inner top nut 53 is threadedly connected to the end connecting shaft 7. The inner end of the inner top nut 53 acts on the outer end of the truncated cone 50. Multiple limiting teeth 52 are provided on the inner circumference of the truncated cone 50. A guide groove 49 is opened on the outer circumference of the central shaft 45. The limiting teeth 52 pass through the guide groove 49.

[0019] Multiple limiting grooves 30 are provided at one end of the sleeve 3. An ejector block 42 is inserted into the limiting groove 30. A positioning block is installed on the outer end of the ejector block 42. The outer end of the positioning block is provided with anti-slip teeth. An inclined surface is formed on the inner end of the ejector block 42. The inclined surface acts on the conical wall of the truncated cone 50. An oblong hole 43 is provided on the ejector block 42. A limiting screw 44 is inserted into the oblong hole 43. The limiting screw 44 is installed on the sleeve 3.

[0020] A limiting ring 40 is fitted onto the sleeve 3. The inner wall of the limiting ring 40 is provided with an inner recess 41. A limiting strip 35 passes through the inner recess 41 and is located on the sleeve 3. The end of the sleeve 3 where the cap 31 is located is provided with an outer protruding edge 34. A pair of lead screws 36 are provided on the outer protruding edge 34. One end of the lead screw 36 is provided with an end cap 38. A limiting nut 37 is provided on the lead screw 36. The limiting nut 37 is located inside the outer protruding edge 34, and the end cap 38 is located outside the outer protruding edge 34. The other end of the lead screw 36 is connected to a moving post 39 by a thread. The other end of the moving post 39 is located on the limiting ring 40.

[0021] In this embodiment, when adjusting the position of the limiting ring 40, the operator simultaneously rotates the two lead screws 36. The rotation of the lead screws 36 will drive the limiting ring 40 to move along the limiting strip 35 until the limiting ring 40 is located at the designated position.

[0022] If the ring cannot be positioned when the ejector block 42 moves outward the maximum distance, a positioning block of appropriate length can be installed on its outer end by screws.

[0023] When positioning and clamping the ring, the operator rotates the inner top nut 53 with a wrench. The rotation of the inner top nut 53 causes the cone 50 to move inward. When the cone 50 moves inward, its circumference acts on the ejector block 42, causing it to move outward. Finally, the outer end of the positioning block or ejector block 42 acts on the inner shaft of the ring, thus completing the positioning of the ring.

[0024] Next, the end shaft 46 and the end connecting shaft 7 are clamped by the clamping jaws on the machining tool, and then the chamfering operation of the end of the ring is performed.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A positioning fixture for chamfering the outer diameter of a sleeve, characterized in that, Includes a sleeve (3), one end of which is provided with a cap (31), a through hole (32) is provided on the cap (31), an end shaft (46) is provided in the through hole (32), a central shaft (45) is provided on the inner end of the end shaft (46), an outer nut (48) is provided on the end shaft (46), the inner end of the outer nut (48) is pressed against the outer wall of the cap (31), a truncated cone (50) is sleeved on the central shaft (45), the inner end of the truncated cone (50) is the small end, the other end of the central shaft (45) is provided with an end connecting shaft (7), an inner top nut (53) is threadedly connected to the end connecting shaft (7), the inner end of the inner top nut (53) acts on the outer end of the truncated cone (50); Multiple limiting grooves (30) are provided at one end of the sleeve (3). An ejector block (42) is inserted in the limiting groove (30). A positioning block is installed on the outer end of the ejector block (42). Anti-slip teeth are provided on the outer end of the positioning block. An inclined surface is formed on the inner end of the ejector block (42). The inclined surface acts on the conical wall of the truncated cone (50). A limiting ring (40) is fitted on the sleeve (3).

2. The positioning fixture for chamfering the outer circle of a sleeve according to claim 1, characterized in that, The inner wall of the perforation (32) is provided with multiple slots (33), and one end of the central shaft (45) is provided with multiple plates (47), which are inserted into the slots (33).

3. The positioning fixture for chamfering the outer circle of a sleeve according to claim 1, characterized in that, The inner circumference of the truncated cone (50) is provided with multiple limiting teeth (52), and the outer circumference of the central shaft (45) is provided with a guide groove (49), with the limiting teeth (52) passing through the guide groove (49).

4. The positioning fixture for chamfering the outer circle of a sleeve according to claim 1, characterized in that, The ejector block (42) has a waist-shaped hole (43), and a limit screw (44) is inserted into the waist-shaped hole (43). The limit screw (44) is installed on the sleeve (3).

5. The positioning fixture for chamfering the outer circle of a sleeve according to claim 1, characterized in that, The sleeve (3) has an outer flange (34) at the end where the cover (31) is located. A pair of screw rods (36) are provided on the outer flange (34). One end of the screw rod (36) is provided with an end cap (38). A limit nut (37) is provided on the screw rod (36). The limit nut (37) is located inside the outer flange (34), and the end cap (38) is located outside the outer flange (34). The other end of the screw rod (36) is connected to a moving post (39) by a thread. The other end of the moving post (39) is located on the limit ring (40).

6. The positioning fixture for chamfering the outer circle of a sleeve according to claim 5, characterized in that, The inner wall of the limiting ring (40) is provided with an inner extension sleeve (41), and a limiting strip (35) is provided inside the inner extension sleeve (41). The limiting strip (35) is provided on the sleeve (3).

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