Center frame

Abstract

The utility model discloses a center frame which comprises a frame body, a fastening piece and a reinforcing piece. A cavity is formed in the frame body and is used for sleeving a workpiece; the fasteners are distributed in the circumferential direction of the frame body, are in threaded connection with the frame body and can move in the axis direction of the frame body; the reinforcing piece comprises a first fastening bolt and an arc-shaped block, the first fastening bolt is arranged on the frame body and used for limiting displacement of the fastening piece, and the arc-shaped block is detachably connected to the end, close to the axis of the frame body, of the fastening piece and used for abutting against the outer wall of a workpiece. According to the utility model, more contact surfaces and corresponding supports are provided for the workpiece by arranging the reinforcing piece, so that the possible tiny vibration of the workpiece is reduced, and the fastening effect of the fastening piece is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe steady rests, and particularly relates to a steady rest. Background Art

[0002] As a kind of tooling, steady rests are widely used in various machine tools, especially for auxiliary positioning and supporting of workpieces on lathes. The utility model patent with the publication number of CN220029368U discloses and authorizes a lathe auxiliary steady rest, which constructs a positioning structure of the auxiliary steady rest by setting an installation plate, a fixed steady rest, a movable steady rest, a rotating rod and a top block, etc. Specifically, the workpiece is preliminarily positioned by the fixed steady rest and the movable steady rest, and then the top block is driven to abut against the workpiece by the rotation of the rotating rod, so as to achieve the limitation.

[0003] However, when the above-mentioned auxiliary steady rest is actually used, since the workpiece will generate tiny vibrations, which will further generate acting forces on the rotating rod, long-term use will cause looseness between the rotating rod and the rotating block as well as the movable block, thus affecting the fastening effect. In addition, the fixing structure of the installation plate is too simple, which makes the fixing of the above-mentioned auxiliary steady rest can only be realized by fastening bolts in a single direction, and also affects the stable use of the auxiliary steady rest. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and propose a steady rest to solve the technical problem that looseness will occur during long-term use in the prior art, thus affecting the fastening effect.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a steady rest, which includes a frame body, fasteners and reinforcement members. A cavity is arranged inside the frame body, and the cavity is used for sleeving a workpiece. The fasteners are distributed along the circumferential direction of the frame body, and the fasteners are threadedly connected with the frame body and can move along the axial direction of the frame body. The reinforcement member includes a first fastening bolt and an arc-shaped block. The first fastening bolt is arranged on the frame body and is used to limit the displacement of the fasteners, and the arc-shaped block is detachably connected to one end of the fastener close to the axis of the frame body and is used to abut against the outer wall of the workpiece.

[0007] In some embodiments, a chute is opened on the outer wall of the frame body, one side of the chute is communicated with the outer wall of the fastener, one end of the first fastening bolt extends into the chute and is used to abut against the fastener, and the first fastening bolt corresponds to the fastener one by one.

[0008] In some embodiments, the fastener includes a second fastening bolt and a fastening block. The second fastening bolt passes through the frame body, and one end of the second fastening bolt is fixedly connected to the fastening block. One end of the fastening block points to the axis of the frame body.

[0009] In some embodiments, a clamping groove is formed on one side of the fastening block facing away from the second fastening bolt, and the convex side of the arc-shaped block is clamped with the clamping groove.

[0010] In some embodiments, a taper is provided at one end of the fastening block close to the axis of the frame body.

[0011] In some embodiments, at least three fasteners are provided, and the arc-shaped blocks correspond to the fasteners one by one.

[0012] In some embodiments, the radian corresponding to each arc-shaped block is the same and corresponds to the same axis.

[0013] In some embodiments, an auxiliary mounting bracket is further included. The auxiliary mounting bracket is fixedly connected to the bottom end of the frame body. The auxiliary mounting bracket is L-shaped, and an auxiliary positioning hole is formed on the auxiliary mounting bracket, and a fastening screw is passed through the auxiliary positioning hole.

[0014] In some embodiments, mounting holes are provided at the bottom end of the frame body, and the mounting holes correspond to the auxiliary positioning holes one by one.

[0015] In some embodiments, at least three mounting holes are provided, and the centers of the mounting holes are not on the same straight line.

[0016] Compared with the prior art, a center frame provided by the present utility model constructs a reinforcement structure by setting a first fastening bolt and an arc-shaped block. Specifically, the first fastening bolt is arranged on the frame body and used to limit the displacement of the fastener, so that after the fastener fastens the workpiece, the fastener can be prevented from loosening due to the acting force generated by the vibration of the workpiece through the first fastening bolt. Further, the arc-shaped block is arranged at one end of the fastener close to the axis of the frame body and used to abut against the outer wall of the workpiece, so that the arc-shaped block can provide more contact surfaces and corresponding supports for the workpiece, thereby reducing the possible micro-vibration of the workpiece, and further improving the fastening effect of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a center frame provided by an embodiment of the present utility model;

[0018] Description of the reference numerals:

[0019] 100, Frame; 110, Cavity; 120, Slide groove; 130, Mounting hole; 200, Fastener; 210, Second fastening bolt; 220, Fastening block; 221, Card slot; 222, Taper; 300, Reinforcement; 310, First fastening bolt; 320, Arc-shaped block; 400, Auxiliary mounting bracket; 410, Auxiliary positioning hole; 420, Fastening screw. Detailed implementation mode

[0020] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] In order to solve the technical problem that loosening will occur during long-term use, which will affect the fastening effect, the present utility model provides a center frame that can improve and stabilize the fastening effect.

[0022] It should be noted that the center frame described in the present utility model is used for but not limited to lathe workpieces, etc. For the convenience of description, in the present utility model, only a center frame applied to a lathe device is taken as an example for description, and the principle of a center frame applied to other types of devices is substantially the same as that applied to a lathe device, and will not be elaborated one by one here.

[0023] Please refer to Figure 1 , Figure 1 is a schematic structural diagram of a center frame in an embodiment of the present utility model. A center frame includes a frame 100, a fastener 200 and a reinforcement 300; a cavity 110 is provided in the frame 100 for sleeving a workpiece; the fasteners 200 are distributed along the circumference of the frame 100, and the fasteners 200 are threadedly connected to the frame 100 and can move along the axial direction of the frame 100; the reinforcement 300 includes a first fastening bolt 310 and an arc-shaped block 320. The first fastening bolt 310 is provided on the frame 100 and is used to limit the displacement of the fastener 200, and the arc-shaped block 320 is detachably connected to one end of the fastener 200 close to the axis of the frame 100 and is used to abut against the outer wall of the workpiece.

[0024] In this embodiment, a reinforcement structure is constructed by providing a first fastening bolt 310 and an arc block 320; specifically, the first fastening bolt 310 is provided on the frame 100 and is used to limit the displacement of the fastener 200, so that after the fastener 200 is fastened to the workpiece, the first fastening bolt 310 can be used to prevent the fastener 200 from loosening due to the force generated by the vibration of the workpiece; further, the arc block 320 is provided at one end of the fastener 200 close to the axis of the frame 100 and is used to abut the outer wall of the workpiece, so that the arc block 320 can provide the workpiece with more contact surface and corresponding support, thereby reducing the possible slight vibration of the workpiece, thereby improving the fastening effect of the fastener 200.

[0025] In one embodiment, see Figure 1 A slide groove 120 is formed on the outer wall of the frame 100 , one side of the slide groove 120 is connected to the outer wall of the fastener 200 , one end of the first fastening bolt 310 extends into the slide groove 120 and is used to abut the fastener 200 , and the first fastening bolt 310 corresponds to the fastener 200 one by one.

[0026] In this embodiment, the first fastening bolts 310 correspond to the fasteners 200 one by one, so that each fastener 200 can be restricted by the first fastening bolts 310 to avoid possible loosening of the fasteners 200.

[0027] In one embodiment, see Figure 1 The fastener 200 includes a second fastening bolt 210 and a fastening block 220 . The second fastening bolt 210 is inserted into the frame 100 . One end of the second fastening bolt 210 is fixedly connected to the fastening block 220 . One end of the fastening block 220 points to the axis of the frame 100 .

[0028] In this embodiment, one end of the fastening block 220 points to the axis of the frame 100, so that the fastening block 220 can be pushed to position and limit the workpiece by rotating the second fastening bolt 210. It should be pointed out that positioning also requires a meter to detect concentricity, which can be done manually.

[0029] In one embodiment, see Figure 1 A slot 221 is formed on the side of the fastening block 220 away from the second fastening bolt 210 , and a convex side of the arc block 320 is engaged with the slot 221 .

[0030] In this embodiment, the protruding side of the arc block 320 is engaged with the slot 221 to facilitate replacement of arc blocks 320 with different curvatures, thereby adapting to the positioning and support of workpieces with different pipe diameters.

[0031] In one embodiment, see Figure 1 The fastening block 220 has a taper 222 at one end close to the axis of the frame 100 .

[0032] In one embodiment, please refer to Figure 1 , at least three fasteners 200 are provided, and the arc-shaped blocks 320 correspond to the fasteners 200 one by one.

[0033] In one embodiment, please refer to Figure 1 , the radian corresponding to each arc-shaped block 320 is the same and corresponds to the same axis center.

[0034] In this embodiment, the radian corresponding to each arc-shaped block 320 is the same and corresponds to the same axis center, so that the limit obtained by the workpiece from different directions is the same.

[0035] In one embodiment, please refer to Figure 1 , further includes an auxiliary mounting bracket 400. The auxiliary mounting bracket 400 is fixedly connected to the bottom end of the frame body 100. The auxiliary mounting bracket 400 is in an L shape. An auxiliary positioning hole 410 is provided on the auxiliary mounting bracket 400, and a fastening screw 420 is inserted through the auxiliary positioning hole 410.

[0036] In this embodiment, a fastening screw 420 is inserted through the auxiliary positioning hole 410, which can facilitate the operator to sleeved the auxiliary mounting bracket 400 on the workbench of the lathe and pass the fastening screw 420 through the auxiliary positioning hole 410 and the frame body 100, so as to realize the support and fixation of more contact surfaces.

[0037] In one embodiment, please refer to Figure 1 , the bottom end of the frame body 100 is provided with a mounting hole 130, and the mounting hole 130 corresponds to the auxiliary positioning hole 410 one by one.

[0038] In this embodiment, the fastening screw 420 can also be positioned through one side of the mounting hole 130, so as to enhance the positioning effect and prevent loosening.

[0039] In one embodiment, please refer to Figure 1 , at least three mounting holes 130 are provided, and the centers of the mounting holes 130 are not on the same straight line.

[0040] In this embodiment, at least three mounting holes 130 are provided, and the centers of the mounting holes 130 are not on the same straight line, which makes the force more uniform and thus enhances the positioning effect.

[0041] For a better understanding of the present utility model, the following will Figure 1 describe the technical solution of the present utility model in detail:

[0042] First, sleeved the frame body 100 on the workbench of the lathe, and respectively passed through the auxiliary positioning holes 410 and the mounting holes 130 with fastening screws 420 to fix the frame body 100 itself more firmly, effectively preventing loosening; then, sleeved the workpiece into the frame body 100 through the cavity 110, and rotated the second fastening bolt 210 so that the arc-shaped block 320 abutted and made more sufficient contact with the outer wall of the workpiece, improving its stability. At this time, the concentricity of the workpiece can be adjusted by dial indicator and then positioned; then, rotate the first fastening bolt 310 to fix the fastening block 220 to prevent the loosening of the fastening block 220, so as to ensure the overall positioning and support effect; because the above structure can support and limit the workpiece more fully, and can limit and reinforce the second fastening bolt 210, it can effectively prevent the phenomenon of loosening during long-term use.

[0043] The above specific implementation manners of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A steady rest, characterized in that, include: A frame body, wherein a cavity is provided in the frame body, and the cavity is used for sleeve mounting a workpiece; Fasteners, the fasteners are distributed along the circumference of the frame, the fasteners are threadedly connected to the frame and can move along the axial direction of the frame; as well as The reinforcement comprises a first fastening bolt and an arc block, wherein the first fastening bolt is arranged on the frame and is used to limit the displacement of the fastener, and the arc block is detachably connected to one end of the fastener close to the axis of the frame and is used to abut against the outer wall of the workpiece.

2. The steady rest according to claim 1, wherein, The outer wall of the frame is provided with a slide groove, one side of which is communicated with the outer wall of the fastener, one end of the first fastening bolt extends into the slide groove and is used to abut against the fastener, and the first fastening bolt corresponds to the fastener one by one.

3. The steady rest according to claim 1, wherein, The fastener comprises a second fastening bolt and a fastening block, wherein the second fastening bolt is passed through the frame, one end of the second fastening bolt is fixedly connected to the fastening block, and one end of the fastening block points to the axis of the frame.

4. The steady rest according to claim 3, characterized in that, A clamping groove is provided on a side of the fastening block facing away from the second fastening bolt, and a convex side of the arc-shaped block is clamped with the clamping groove.

5. The steady rest according to claim 3, characterized in that, One end of the fastening block close to the axis of the frame is provided with a taper.

6. The steady rest according to claim 1, characterized in that, At least three fasteners are provided, and the arc blocks correspond to the fasteners one by one.

7. The steady rest according to claim 1, wherein The arcs corresponding to the arc blocks are the same and correspond to the same axis.

8. A steady rest according to claim 1, characterized in that, It also includes an auxiliary mounting frame, which is fixedly connected to the bottom end of the frame body, and is L-shaped. An auxiliary positioning hole is opened on the auxiliary mounting frame, and a fastening screw is inserted into the auxiliary positioning hole.

9. The steady rest according to claim 8, characterized in that, The bottom end of the frame is provided with a mounting hole, and the mounting hole corresponds to the auxiliary positioning hole one by one.

10. The center rest according to claim 9, characterized in that, At least three mounting holes are provided, and the centers of the mounting holes are not on the same straight line.

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