Lathe center frame clamp suitable for special-shaped shaft head

Abstract

The utility model relates to the technical field of special-shaped shaft head machining, in particular to a lathe center frame clamp suitable for a special-shaped shaft head, which comprises a center frame, a barrel is arranged at the center of the center frame, a clamping device for fixing the barrel is arranged on the center frame, the clamping device comprises a clamping rod, a rotating button is arranged at the top end of the clamping rod, and the rotating button is arranged on the clamping rod. A fixing piece is arranged in the top end of the clamping rod, and an elastic spring is arranged at one end of the fixing piece. The clamp is placed on the center frame, secondary fastening and clamping are conducted on the special-shaped shaft head through the clamp, rapid concentricity alignment of the large-diameter roller body and the special-shaped shaft head is achieved, the center frame of a machine tool is not damaged, the service life of the fastening contact face of the center frame is greatly prolonged, production efficiency is improved, and the clamp is simple in structure, easy to machine and low in cost. The equipment investment is low.

Description

Technical Field

[0001] The utility model relates to the technical field of special-shaped shaft head processing, in particular to a lathe steady rest fixture suitable for special-shaped shaft heads. Background Technique

[0002] After the large-diameter long roller shaft head is welded and repaired, the shaft table needs to be reprocessed. However, some manufacturers do not reserve a reference surface for processing the shaft table. Some long rollers are even wrapped with rubber, etc., and cannot be supported by a steady rest, resulting in the inability to align the concentricity of the roller body and the shaft head. Using the steady rest to fix the shaft table with pits and special shapes on the surface after welding and repair in the prior art will cause serious wear and even scrapping of the fixed part of the steady rest. And outsourcing the processing takes a long time and is costly. Therefore, the utility model aims to provide a lathe steady rest fixture suitable for special-shaped shaft heads. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a lathe steady rest fixture suitable for special-shaped shaft heads, so as to solve the problems in the related art that using the steady rest to fix the shaft table with pits and special shapes on the surface after welding and repair in the prior art will cause serious wear and even scrapping of the fixed part of the steady rest. And outsourcing the processing takes a long time and is costly.

[0004] To achieve the above purpose, according to one aspect of the utility model, a lathe steady rest fixture suitable for special-shaped shaft heads is provided, which includes a steady rest. A cylinder body is arranged at the center of the steady rest. A clamping device for fixing the cylinder body is arranged on the steady rest. The clamping device includes a clamping rod. A rotating knob is arranged at the top end of the clamping rod. A fixing piece is arranged inside the top end of the clamping rod. One end of the fixing piece is provided with a elastic spring.

[0005] Further, the steady rest includes an assembly seat. A lower frame body is fixedly installed at the center of the upper surface of the assembly seat. An upper frame body is fixedly installed at the top of the lower frame body.

[0006] Further, fixing plates are fixedly installed at the center of the top of the upper frame body and on both sides near the top of the lower frame body respectively. The clamping rods are slidably installed inside the three fixing plates respectively.

[0007] Further, the rotating knob is fixedly installed at the top of the clamping rod.

[0008] Further, the cylinder body is arranged at the center between the upper frame body and the lower frame body.

[0009] Further, the inner diameter of the cylinder body is 1200 mm, the wall thickness of the cylinder body is 10 mm, and the length of the cylinder body is 20 mm.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. By placing the fixture on the steady rest and using the fixture to tightly clamp the special-shaped shaft head for the second time, the concentricity between the large-diameter roller body and the special-shaped shaft head is quickly aligned, and the steady rest is not damaged, greatly improving the service life of the fastening contact surface of the steady rest, improving production efficiency. The fixture has a simple structure, is easy to process, and requires less equipment investment.

[0012] 2. By providing a fixing member and a resilient spring on the clamping rod, it is convenient to replace and install the turning knob when it is severely worn, thus reducing the loss of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the whole of the present utility model;

[0014] Figure 2 is a schematic diagram of the section of the steady rest of the present utility model;

[0015] Figure 3 is a schematic diagram of the section of the clamping device of the present utility model;

[0016] Illustration:

[0017] 1. Steady rest; 11. Upper frame body; 111. Insertion plate; 112. First bolt; 113. Fixed plate; 114. Convex ring; 12. Lower frame body; 121. Slot; 13. Assembly seat; 131. Second bolt; 2. Cylinder; 21. Threaded rod; 3. Clamping device; 31. Clamping rod; 311. Fixing member; 312. Resilient spring; 313. Chute; 32. Turning knob; 321. Groove; 33. Positioning rod; 331. Mounting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and effects of the present utility model as follows.

[0019] Please refer to Figures 1 to 3 , this embodiment provides a lathe steady rest fixture suitable for a special-shaped shaft head, including a steady rest 1. A cylinder 2 is provided at the center of the steady rest 1. A clamping device 3 for fixing the cylinder 2 is provided on the steady rest 1. The clamping device 3 includes a clamping rod 31. A turning knob 32 is provided at the top of the clamping rod 31. A fixing member 311 is provided inside the top of the clamping rod 31. One end of the fixing member 311 is provided with a resilient spring 312.

[0020] The center rest 1 includes an assembly seat 13. At the center of the upper surface of the assembly seat 13, a lower frame body 12 is fixedly installed, and at the top of the lower frame body 12, an upper frame body 11 is fixedly installed. It should be added that a mounting hole is penetrated and opened at the center of the bottom of the lower frame body 12. A second bolt 131 is fixedly installed at the center of the upper surface of the assembly seat 13, and the mounting hole is fixedly installed on the second bolt 131. At the centers of both ends of the bottom of the upper frame body 11, insertion plates 111 are fixedly installed. At the centers of both ends of the top of the lower frame body 12, slots 121 are opened, which have the same shape and size as the insertion plates 111 and are inserted into each other. The insertion plates 111 are slidably installed in the slots 121. An installation part is fixedly installed in the slot 121 at one end of the lower frame body 12, and the insertion plate 111 at one end of the upper frame body 11 is rotatably installed on the installation part. A first bolt 112 is threadedly installed in the slot 121 at the other end of the lower frame body 12, and the insertion plate 111 at the other end of the upper frame body 11 is fixedly installed on the first bolt 112.

[0021] The setting of the first bolt 112 facilitates the removal of the insertion plate 111 at the other end of the upper frame body 11 from the slot 121 at the other end of the lower frame body 12.

[0022] At the center of the top of the upper frame body 11 and on both sides near the top of the lower frame body 12, fixing plates 113 are respectively fixedly installed, and the clamping rods 31 are respectively slidably installed in the three fixing plates 113. It should be added that at the center of the upper frame body 11 and on both sides near the top of the lower frame body 12, convex rings 114 are respectively fixedly installed. Through holes are respectively penetrated and opened at the centers of the surfaces of the three fixing plates 113, and the diameter of the through holes is the same as the inner diameter of the convex rings 114. The bottoms of the clamping rods 31 slide in the through holes and the convex rings 114. First threaded holes communicating with the through holes are respectively penetrated and opened at the center of the surface of the upper frame body 11 and on both sides near the top of the surface of the lower frame body 12. Positioning rods 33 are threadedly installed in the first threaded holes, and mounting rods 331 are fixedly installed on both sides of the top ends of the positioning rods 33.

[0023] The clamping rod 31 has a size of M16*6. The positioning rod 33 is provided to resist the clamping rod 31, thereby fixing the position of the clamping rod 31. The mounting rod 331 is provided to facilitate placing the hand at the mounting rod 331, thereby rotating the positioning rod 33.

[0024] A turning knob 32 is fixedly installed at the top of the clamping rod 31. It should be added that a groove is opened at the center of the bottom of the turning knob 32, and the top of the clamping rod 31 is slidably installed in the groove. Grooves 321 are opened at both ends on both sides in the groove, and chutes 313 are opened at both ends on both sides of the top of the clamping rod 31. Fixing pieces 311 are slidably installed in the chutes 313, and a tension spring 312 is fixedly installed at the center of the bottom of the chute 313 and the center of one end of the fixing piece 311.

[0025] The rotation knob 32 is provided to facilitate the operation of the clamping rod 31. The movement of the clamping rod 31 can be easily controlled through the rotation knob 32. The fixing member 311 and the elastic spring 312 are provided to facilitate the replacement and installation of the rotation knob 32 on the clamping rod 31 when the rotation knob 32 is severely worn. The fixing member 311 is triangular to facilitate the installation and replacement of the rotation knob 32.

[0026] The cylinder body 2 is arranged at the center between the upper frame body 11 and the lower frame body 12. It should be added that: through holes are formed at both ends on both sides of one end of the cylinder body 2, and threaded rods 21 are threadedly installed in the through holes.

[0027] The cylinder body 2 is arranged at the center of the central frame 1 to accommodate and support the special-shaped shaft head, ensuring the stability and positioning accuracy of the shaft head during the processing.

[0028] The inner diameter of the cylinder body 2 is 1200 mm, the wall thickness of the cylinder body 2 is 10 mm, and the length of the cylinder body 2 is 20 mm. It should be added that: the outer wall of the cylinder body 2 is smooth and free of burrs.

[0029] Setting these parameters ensures that the cylinder body 2 has sufficient strength and accuracy, while avoiding damage to the special-shaped shaft head.

[0030] For the specific use of the present utility model, first, place the cylinder body 2 at the center between the upper frame body 11 and the lower frame body 12, ensure that both ends of the cylinder body 2 are in contact with the corresponding positions of the upper frame body 11 and the lower frame body 12 respectively, place the special-shaped shaft head in the cylinder body 2, ensure that the shaft head is aligned with the central axis of the cylinder body 2, then through the threaded rod 21 on the cylinder body 2, use the threaded rod 21 to fix the shaft head in the cylinder body 2 to ensure the stability of the shaft head. Operate the rotation knob 32 to rotate the clamping rod 31, so that it moves towards the cylinder body 2 until it abuts against the outer wall of the cylinder body 2. Then fix the clamping rod 31 by rotating the positioning rod 33. Screw the positioning rod 33 into the first threaded hole so that its top abuts against the clamping rod 31, thereby fixing its position to ensure that the clamping rod 31 will not loosen or move during the processing, and thus machining can be carried out. After the machining is completed, first loosen the positioning rod 33 to release the fixation of the clamping rod 31, operate the rotation knob 32 to loosen the clamping of the cylinder body 2 by the clamping rod 31, and then take out the machined special-shaped shaft head. When the rotation knob 32 is severely worn, by moving the rotation knob 32 up or down, the fixing member 311 is compressed, and the fixing member 311 compresses the elastic spring 312, so as to facilitate the replacement and installation of the rotation knob 32 on the clamping rod 31.

[0031] The above are only the preferred embodiments of the present utility model and do not impose any formal restrictions on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the technical content disclosed above. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A lathe center frame fixture suitable for special-shaped shaft heads, comprising a center frame (1), characterized in that: A cylinder (2) is provided at the center of the center frame (1), and a clamping device (3) for fixing the cylinder (2) is provided on the center frame (1). The clamping device (3) comprises a clamping rod (31), a rotating button (32) is provided at the top end of the clamping rod (31), a fixing piece (311) is provided inside the top end of the clamping rod (31), and an elastic spring (312) is provided at one end of the fixing piece (311).

2. The lathe center frame fixture suitable for special-shaped shaft heads according to claim 1, characterized in that: The central frame (1) comprises an assembly seat (13), a lower frame body (12) is fixedly mounted at the center of the upper surface of the assembly seat (13), and an upper frame body (11) is fixedly mounted on the top of the lower frame body (12).

3. The lathe center frame fixture suitable for special-shaped shaft heads according to claim 2, characterized in that: Fixed plates (113) are respectively fixedly installed at the top center of the upper frame (11) and on both sides close to the top of the lower frame (12), and the clamping rods (31) are respectively slidably installed in the three fixed plates (113).

4. The lathe center frame fixture suitable for special-shaped shaft heads according to claim 3, characterized in that: The rotating knob (32) is fixedly mounted on the top of the clamping rod (31).

5. The lathe center frame fixture suitable for special-shaped shaft heads according to claim 4, characterized in that: The cylinder (2) is arranged at the center between the upper frame (11) and the lower frame (12).

6. The lathe center frame fixture suitable for special-shaped shaft heads according to claim 5, characterized in that: The inner diameter of the cylinder (2) is 1200 mm, the wall thickness of the cylinder (2) is 10 mm, and the length of the cylinder (2) is 20 mm.

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