Multi-station machining tool for shafts
By designing multi-station processing tooling for shafts and utilizing the coordination of limit slots and limit pressure blocks, multi-station rapid clamping and automatic resetting can be achieved, solving the problem of frequent adjustment of traditional fixtures and improving production efficiency and clamping stability.
Patent Information
- Application Number
- CN202422833494.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In traditional shaft parts processing, fixtures need to be fixed and adjusted one by one, resulting in low production efficiency.
A multi-station machining fixture for shafts is designed, which adopts a limit seat and a limit pressure block. Through the cooperation of the limit slot and the limit short shaft, multi-station rapid clamping and automatic reset are achieved, reducing the need for fixture adjustment.
The stability and production efficiency of the clamping and fixing of shaft parts are improved, the clamp adjustment steps when replacing workpieces are reduced, and the processing efficiency is improved.
Smart Images
Figure CN223394864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft processing fixtures, in particular to a multi-station shaft processing fixture. Background Art
[0002] Shaft parts are one of the most common parts in mechanical processing. After forming, shaft parts often need to be processed by grinding, drilling and other processing operations, which requires transferring the shaft parts to the processing fixture. In traditional processes, they rely on fixing parts one by one through a single fixture. When processing multiple shaft parts continuously, the fixture needs to be readjusted every time the workpiece is changed, which greatly reduces production efficiency. Utility Model Content
[0003] 1. Technical Problems to be Solved
[0004] The purpose of the utility model is to provide a multi-station processing tool for shafts, which can quickly install and stably clamp multiple shaft parts, and does not require frequent adjustment of the fixture when replacing the workpiece to be processed, thereby improving production efficiency.
[0005] 2. Technical Solution
[0006] The present invention is achieved through the following technical solutions:
[0007] The utility model proposes a multi-station processing tool for shafts, including a limit seat and a limit pressure block, wherein a plurality of columns are fixed on the surface of the limit seat, and a plurality of placement grooves for placing shafts are opened on its surface near the columns; two sections of limit grooves are symmetrically opened on the surface of the column, and the limit grooves at least include a spiral groove section located in the middle and opened around a quarter of the circle of the column surface, and an upper groove section and a lower groove section respectively connected to the upper and lower ends of the spiral groove section, and the length directions of the upper groove section and the lower groove section are parallel to the central axis direction of the column; a through hole is opened in the middle of the limit pressure block to allow the column to pass through, and two limit short shafts are relatively fixedly connected to the inner wall of the through hole, and the limit short shafts extend into the limit groove and are slidably connected to the limit groove.
[0008] Furthermore, a thread is provided on the surface of the column and a nut is threadedly engaged with the thread. When the nut moves downward, it pushes the limiting pressure block to move and rotate along the limiting groove.
[0009] Furthermore, the pitch length of the spiral groove segment is at least four times the diameter of the column.
[0010] Furthermore, a spring is provided on the outer sleeve of the column, and the upper and lower ends of the spring are respectively in contact with the limiting pressure block and the surface of the limiting seat.
[0011] Furthermore, a placement groove is provided on both sides of each limiting pressure block. When the limiting pressure block moves to the bottom along the limiting groove, the length direction of the limiting pressure block is perpendicular to the axial direction of the limiting groove, and the two ends of the limiting pressure block are respectively located above the placement grooves on both sides.
[0012] Furthermore, the two pairs of side walls of the limiting pressure blocks are relatively parallel and inclined, and the adjacent side surfaces of the two adjacent limiting pressure blocks can fit tightly together when they move to the same height in the lower groove section.
[0013] 3. Beneficial Effects
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. The utility model provides a limiting groove on the surface of the column, and the limiting short shaft is slidably connected to the limiting groove. When the limiting pressure block moves up and down, it can move and rotate along the limiting groove. When the limiting short shaft is located in the upper groove section, the length direction of the limiting pressure block is parallel to the axial direction of the limiting groove, so that the limiting pressure block will not interfere with and affect the placement of shaft parts in the placement groove; when the limiting pressure block moves to the point where its limiting short shaft is located in the lower groove section, the limiting pressure block rotates 90 degrees and is placed horizontally above the shaft part. After tightening the nut, the shaft part can be quickly fixed; and After loosening the nut and taking out the part, under the action of the spring force, the limiting pressure block can automatically move along the limiting groove to the upper groove section and automatically reset, thereby clamping and fixing multiple shaft parts, facilitating the continuous fixed shaft part processing; in addition, the utility model limits the rotation angle of the limiting pressure block at different height positions on the column, so that the limiting pressure block can accurately move to a fixed position during the up and down movement, thereby improving the stability of clamping and fixing, and there is no need to adjust the position of the limiting pressure block when replacing shaft parts, thereby improving production efficiency.
[0016] 2. When fixing multi-axis parts, fix each limit block in turn. When two adjacent limit blocks move to the same height in the lower groove section, the adjacent side surfaces between them fit tightly together, so that all the limit blocks in the same row are locked with each other and are simultaneously tightened by the nuts above, thereby preventing the limit blocks from loosening and improving the stability of the clamping and fixing of the shaft parts during processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the exploded structure of the column, the limiting pressure block and the nut;
[0019] 1. Limit seat; 2. Limit pressure block; 201. Through hole; 3. Column; 4. Mounting groove; 5. Limit groove; 501. Spiral groove section; 502. Upper groove section; 503. Lower groove section; 6. Limit short shaft; 7. Nut; 8. Spring. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 invention and are not intended to limit the present invention.
[0021] A multi-station machining tool for shafts, please refer to Figure 1-2 , including a limit seat 1 and a limit pressure block 2, a number of columns 3 are fixed on the surface of the limit seat 1, and a number of placement grooves 4 for placing shafts are opened on the surface of the limit seat 1 near the columns 3. The placement grooves 4 are arc-shaped to be embedded and fixed with the surface of shaft parts.
[0022] Among them, two sections of limiting grooves 5 are symmetrically opened on the surface of the column 3 about its central axis. The limiting groove 5 at least includes a spiral groove section 501, and an upper groove section 502 and a lower groove section 503 respectively connected to the upper and lower ends of the spiral groove section 501. The spiral groove section 501 is located in the middle of the column 3 and is opened around a quarter of the circle of the surface of the column 3. The length directions of the upper groove section 502 and the lower groove section 503 are parallel to the central axis direction of the column 3; a through hole 201 is opened in the middle of the limiting pressure block 2, and the column 3 passes through the through hole 201. Two limiting short shafts 6 are relatively fixed on the inner wall of the through hole 201. The limiting short shafts 6 extend into the limiting groove 5 and are slidably connected to the limiting groove 5.
[0023] The surface of the column 3 is provided with a thread and is threadedly fitted with a nut 7 . When the nut 7 moves downward, it pushes the limiting pressing block 2 to move and rotate along the limiting groove 5 .
[0024] During the up and down movement of the limiting pressure block 2, the limiting short shaft 6 slides in the limiting groove. When in use, the shaft part is placed in the placement groove 4, and the nut 7 is screwed downward, and the nut 7 pushes the limiting pressure block 2 downward. When the limiting short shaft 6 connected to the limiting pressure block 2 is located in the upper groove section 502, the limiting pressure block 2 is in a position where its length direction is parallel to the axial direction of the limiting groove. When the limiting short shaft 6 moves into the spiral groove section 501, the limiting short shaft 6 drives the limiting pressure block 2 to rotate. When the limiting short shaft 6 moves into the lower groove section 503, the limiting pressure block 2 rotates 90°. At this time, the limiting pressure block 2 is in a position where its length direction is perpendicular to the axial direction of the limiting groove, that is, the limiting pressure block 2 is in a horizontal position above the shaft part and is not easy to move, which has the best clamping effect. Continuing to screw and tighten the nut 7 can compress and fix the shaft for processing. In the present invention, the rotation angle of the limiting pressure block 2 at different height positions on the column is limited, so that the limiting pressure block 2 can be accurately moved to a fixed position during the up and down movement, thereby improving the stability of clamping and fixing, and there is no need to adjust the position of the limiting pressure block 2, thereby improving production efficiency.
[0025] In this embodiment, in order to enable the limiting short shaft 6 to move smoothly in the spiral groove section 501 , the pitch length of the spiral groove section 501 is at least four times the diameter of the column 3 .
[0026] As an embodiment of the present invention, a spring 8 is provided on the outer sleeve of the column 3, and the upper and lower ends of the spring 8 are respectively connected with the surface of the limit pressure block 2 and the limit seat 1. The limit short shaft 6 and the limit groove are matched with a large gap. When the shaft is placed on the placement groove 4, under the action of gravity, the limit pressure block 2 automatically moves and rotates along the limit groove until it contacts the top of the shaft, and the shaft is fixed after tightening the nut 7; after the processing is completed, the nut 7 is loosened, and under the elastic force of the spring 8, the limit pressure block 2 is lifted up and away from the limit seat 1 until the limit short shaft 6 moves into the upper groove section 502, which is convenient for placing shaft parts for processing next time.
[0027] Among them, a placement groove 4 is respectively set on both sides of each limiting pressure block 2. When the limiting pressure block 2 moves to the bottom along the limiting groove 5, the length direction of the limiting pressure block 2 is perpendicular to the axial direction of the limiting groove 5, and the two ends of the limiting pressure block 2 are respectively located above the placement grooves 4 on both sides thereof. A single limiting pressure block 2 can simultaneously press two shaft parts, thereby improving processing efficiency.
[0028] The two side walls of the two pairs of limiting pressure blocks 2 are relatively parallel and inclined. When fixing multi-axial parts, each limiting pressure block 2 is fixed in turn. When two adjacent limiting pressure blocks 2 move to the same height in the lower groove section 503, the adjacent side surfaces between the two are tightly fitted with each other, so that all the limiting pressure blocks 2 in the same row are locked with each other and are simultaneously tightened by the nuts 7 above, thereby preventing the limiting pressure blocks 2 from loosening and improving the stability of the tightening and fixing of the axial parts during processing.
[0029] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content sought to be protected by the present invention is fully set forth in the claims.
Claims
1. A multi-station processing tool for shafts, characterized in that: The invention comprises a limiting seat (1) and a limiting pressure block (2); a plurality of columns (3) are fixed on the surface of the limiting seat (1); and a plurality of placement grooves (4) for placing shafts are opened on the surface of the limiting seat (1) near the columns (3); two sections of limiting grooves (5) are symmetrically opened on the surface of the columns (3); the limiting grooves (5) at least comprise a spiral groove section (501) opened around a quarter of the surface of the column (3) and connected to the upper and lower parts of the spiral groove section (501). The upper groove section (502) and the lower groove section (503) at both ends are parallel to the central axis direction of the column (3); a through hole (201) is provided in the middle of the limiting pressure block (2) so that the column (3) can pass through; two limiting short shafts (6) are relatively fixedly connected to the inner wall of the through hole (201); the limiting short shafts (6) extend into the limiting groove (5) and are slidably connected to the limiting groove (5).
2. The multi-station processing tool for shafts according to claim 1, characterized in that: The surface of the column (3) is provided with a thread and is threadedly matched with a nut (7). When the nut (7) moves downward, it pushes the limiting pressure block (2) to move and rotate along the limiting groove (5).
3. The multi-station processing tool for shafts according to claim 1, characterized in that: The pitch length of the spiral groove section (501) is at least four times the diameter of the column (3).
4. The multi-station processing tool for shafts according to claim 2, characterized in that: The outer sleeve of the column (3) is provided with a spring (8), and the upper and lower ends of the spring (8) are respectively in contact with the surfaces of the limiting pressure block (2) and the limiting seat (1).
5. The multi-station processing tool for shafts according to claim 4, characterized in that: A placement groove (4) is respectively provided on both sides of each of the limiting pressure blocks (2); when the limiting pressure block (2) moves to the bottom along the limiting groove (5), the length direction of the limiting pressure block (2) is perpendicular to the axial direction of the limiting groove (5), and the two ends of the limiting pressure block (2) are respectively located above the placement grooves (4) on both sides thereof.
6. The multi-station processing tool for shafts according to claim 5, characterized in that: The two pairs of side walls of the limiting pressure blocks (2) are relatively parallel and inclined, and the adjacent side surfaces of the two adjacent limiting pressure blocks (2) can fit tightly together when they move to the same height in the lower groove section (503).