Multi-angle accurate positioning tool for workpiece in finish-milling and finish-grinding machining

Abstract

The utility model belongs to the technical field of finish-milling and finish-grinding of workpieces, and particularly relates to a multi-angle precise positioning tool for workpieces in finish-milling and finish-grinding processing, which comprises a bottom plate. The top of the bottom plate is rotationally connected with a rotating shaft; the top of the rotating shaft is fixedly connected with a table plate; a plurality of positioning holes are formed in the middle of the platen; the positioning holes are distributed in a circumferential array state; the middle part of the bottom plate is fixedly connected with two L-shaped plates; the two L-shaped plates are symmetrically arranged; the side wall of the L-shaped plate is in threaded connection with a screw rod; the screw rod is arranged at a position corresponding to the positioning hole; the end part of the screw rod is fixedly connected with a handle; the top of the table plate is fixedly connected with a fixing assembly; by means of the structure, the angle of the workpiece can be effectively adjusted, the different surfaces of the workpiece can be sequentially located at the machining position, the machining precision and efficiency are effectively improved, the situation that tools are frequently replaced is reduced, a large amount of time is saved, and the utilization rate of the tools is also improved.

Description

Technical Field

[0001] This utility model belongs to the field of workpiece precision milling and grinding technology, specifically a multi-angle precise positioning fixture for workpieces in precision milling and grinding. Background Technology

[0002] Fine milling and fine grinding are two important processes in machining. Fine milling is a type of milling that uses smaller cutting parameters and feed rates to achieve higher machining accuracy and surface quality, based on rough milling. Fine grinding is a method of precision grinding of the workpiece surface using abrasive tools. Through the relative movement between the abrasive tool, such as a grinding wheel, and the workpiece surface, small excess material is removed to achieve high dimensional accuracy, shape accuracy, and surface quality.

[0003] In modern manufacturing, especially in high-end fields such as aerospace, automobile manufacturing, and precision instruments, increasingly higher requirements are placed on the machining accuracy and surface quality of parts. Precision milling and grinding, as key precision machining processes, play an irreplaceable role in the manufacturing of complex parts. Positioning fixtures are usually used when precision milling and grinding parts.

[0004] Existing workpiece positioning fixtures for precision milling and grinding can mostly only achieve positioning at a single angle or a limited angle, making it difficult to meet the requirements of multi-angle machining. When multi-angle machining of a workpiece is required, multiple clamping operations are often necessary, which consumes a lot of time and reduces machining efficiency.

[0005] Therefore, this utility model provides a multi-angle precision positioning fixture for workpieces in precision milling and grinding. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A multi-angle precision positioning fixture for workpieces in precision milling and grinding, comprising a base plate; a rotating shaft rotatably connected to the top of the base plate; a platform fixedly connected to the top of the rotating shaft; multiple positioning holes opened in the middle of the platform; the positioning holes are distributed in a circumferential array; two L-shaped plates fixedly connected to the middle of the base plate; the two L-shaped plates are symmetrically arranged; a screw is threadedly connected to the side wall of the L-shaped plate; the screw is positioned at a position corresponding to the positioning hole; a handle is fixedly connected to the end of the screw; a fixing component is fixedly connected to the top of the platform. Through the above structure, the angle of the workpiece can be effectively adjusted, allowing different surfaces of the workpiece to be sequentially positioned in the processing position, effectively improving the processing accuracy and efficiency.

[0008] Preferably, the fixing assembly includes a placement platform; a bracket is fixedly connected to the top of the placement platform; a cylinder is fixedly connected to the top of the bracket; a fixing plate is fixedly connected to the output end of the cylinder; two guide rods are slidably connected to the top of the bracket; the two guide rods are symmetrically arranged; the guide rods are fixedly connected to the top of the fixing plate; a positioning block is fixedly connected to the top of the guide rods; through the above structure, the workpiece can be effectively fixed, reducing the workpiece position displacement during processing, thereby improving the processing accuracy.

[0009] Preferably, a track is fixed to the top of the base plate; multiple sliders are slidably connected inside the track; the sliders are distributed in a circular array; a connecting rod is fixed to the middle of the slider; the connecting rod is fixed to the bottom of the platform; through the above structure, the platform can be effectively supported and guided, improving the stability of the overall tooling structure.

[0010] Preferably, a plurality of support rods are fixedly connected to the middle of the placement platform; the support rods are distributed in a circumferential array; and handrails are fixedly connected to the ends of the support rods. Through the above structure, an application point of force can be provided to the operator, making it easier to rotate the platform.

[0011] Preferably, two sets of electric push rods are fixedly connected to the bottom of the base plate; the two sets of electric push rods are arranged symmetrically; through the above structure, the position and height of the workpiece can be effectively adjusted, thereby changing the operator's viewing angle of the workpiece.

[0012] Preferably, a protective pad is adhered to the bottom of the fixing plate; the protective pad is made of rubber; through the above structure, the wear of the fixing plate on the workpiece can be effectively reduced, and the surface of the workpiece can be protected.

[0013] Preferably, an anti-slip pad is adhered to the bottom of the electric push rod; the anti-slip pad is made of rubber; through the above structure, the anti-slip pad can effectively absorb the vibration and noise generated during the lifting and lowering of the electric push rod, making the operation quieter.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The present invention relates to a multi-angle precision positioning fixture for workpieces in precision milling and grinding. By rotating the table, the workpiece on top is rotated and adjusted to a suitable angle. Then, by rotating the handle, the screw is rotated and moved into the positioning hole to fix the table. This structure can effectively adjust the angle of the workpiece and allow different surfaces of the workpiece to be in the processing position in sequence, effectively improving the processing accuracy and efficiency.

[0016] 2. The multi-angle precision positioning fixture for workpieces in precision milling and grinding described in this utility model uses a starting cylinder to drive a fixed plate to move downwards. The fixed plate contacts and fixes the workpiece. While the fixed plate moves, it drives a guide rod to slide on the bracket. The positioning block limits the guide rod, which can effectively fix the workpiece and reduce the workpiece position deviation during processing. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the platform plate of this utility model;

[0020] Figure 3 This is a cross-sectional view of the track in this utility model;

[0021] Figure 4 This is a schematic diagram of the placement platform in this utility model.

[0022] In the diagram: 1. Base plate; 11. Rotating shaft; 12. Platform; 13. Positioning hole; 14. L-shaped plate; 15. Screw; 16. Handle; 17. Fixing component; 2. Placement platform; 21. Bracket; 22. Cylinder; 23. Fixing plate; 24. Guide rod; 25. Positioning block; 3. Track; 31. Slider; 32. Connecting rod; 4. Support rod; 41. Handrail; 5. Electric push rod; 6. Protective pad; 7. Anti-slip pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 4As shown in the embodiment of this utility model, a multi-angle precision positioning fixture for workpieces in precision milling and grinding includes a base plate 1; a rotating shaft 11 is rotatably connected to the top of the base plate 1; a platform 12 is fixedly connected to the top of the rotating shaft 11; multiple positioning holes 13 are opened in the middle of the platform 12; the positioning holes 13 are distributed in a circumferential array; two L-shaped plates 14 are fixedly connected to the middle of the base plate 1; the two L-shaped plates 14 are symmetrically arranged; screws 15 are threadedly connected to the side walls of the L-shaped plates 14; the screws 15 are located at positions corresponding to the positioning holes 13; a handle 16 is fixedly connected to the end of the screw 15; a fixing component 17 is fixedly connected to the top of the platform 12; During operation, the workpiece is placed on the fixing component 17 for fixation. The table 12 is rotated, which in turn drives the workpiece on top to rotate, adjusting the workpiece to a suitable angle. Then, the handle 16 is rotated, which drives the screw 15 to rotate. The screw 15 moves as it rotates, inserting itself into the positioning hole 13. Through the above structure, the angle of the workpiece can be effectively adjusted, allowing different surfaces of the workpiece to be in the processing position in sequence. This effectively improves the processing accuracy and efficiency, reduces the need for frequent tooling changes, saves a lot of time, and increases the utilization rate of the tooling.

[0026] like Figure 1 and Figure 4 As shown, the fixing assembly 17 includes a placement platform 2; a bracket 21 is fixedly connected to the top of the placement platform 2; a cylinder 22 is fixedly connected to the top of the bracket 21; a fixing plate 23 is fixedly connected to the output end of the cylinder 22; two guide rods 24 are slidably connected to the top of the bracket 21; the two guide rods 24 are symmetrically arranged; the guide rods 24 are fixedly connected to the top of the fixing plate 23; a positioning block 25 is fixedly connected to the top of the guide rods 24; during operation, the workpiece is placed on the top of the placement platform 2, the cylinder 22 is activated, the cylinder 22 drives the fixing plate 23 to move downward, the fixing plate 23 contacts the workpiece and fixes it, and while the fixing plate 23 moves, it drives the guide rods 24 to slide on the bracket 21, and the positioning block 25 limits the guide rods 24. Through the above structure, the workpiece can be effectively fixed, reducing the workpiece position deviation during processing, thereby improving the processing accuracy. The setting of the guide rods 24 and the positioning block 25 makes the fixing plate 23 more stable when moving, indirectly improving the fixing effect of the fixing plate 23.

[0027] like Figure 3As shown, a track 3 is fixedly connected to the top of the base plate 1; multiple sliders 31 are slidably connected inside the track 3; the sliders 31 are distributed in a circular array; a connecting rod 32 is fixedly connected to the middle of the sliders 31; the connecting rod 32 is fixedly connected to the bottom of the platform 12; during operation, when the platform 12 rotates, the platform 12 drives the sliders 31 at the end of the connecting rod 32 to slide inside the track 3. Through the above structure, the platform 12 can be effectively supported and guided, reducing the shaking that occurs during the rotation of the platform 12 and improving the overall stability of the tooling structure.

[0028] like Figure 1 and Figure 4 As shown, multiple support rods 4 are fixedly connected to the middle of the placement platform 2; the support rods 4 are distributed in a circular array; and handrails 41 are fixedly connected to the ends of the support rods 4. During operation, the support rods 4 and handrails 41 are set on the placement platform 2. When it is necessary to adjust the angle of the workpiece, the operator can rotate the workpiece by holding the handrail 41. Through the above structure, the operator can be provided with a point of force application, making it easier to rotate the platform 12 and adjust the position of the workpiece, thus improving the convenience of use.

[0029] like Figure 1 As shown, two sets of electric push rods 5 are fixed to the bottom of the base plate 1; the two sets of electric push rods 5 are arranged symmetrically; when working, the electric push rods 5 are activated, and the electric push rods 5 drive the base plate 1 to move up and down. The movement of the base plate 1 adjusts the position height of the workpiece on the top of the placement table 2. Through the above structure, the position height of the workpiece can be effectively adjusted, thereby changing the operator's viewing angle of the workpiece and allowing the operator to see the processing part more clearly.

[0030] like Figure 4 As shown, a protective pad 6 is bonded to the bottom of the fixing plate 23; the protective pad 6 is made of rubber; during operation, the protective pad 6 is set at the bottom of the fixing plate 23. The protective pad 6 is made of rubber and has a relatively soft texture. Through the above structure, the wear of the fixing plate 23 on the workpiece can be effectively reduced, the surface of the workpiece can be protected, and the protective pad 6 can increase the friction between the fixing plate 23 and the workpiece, so that the fixing plate 23 can better fix the workpiece.

[0031] like Figure 1 As shown, an anti-slip pad 7 is attached to the bottom of the electric push rod 5; the anti-slip pad 7 is made of rubber; during operation, the anti-slip pad 7 is placed at the bottom of the electric push rod 5. The anti-slip pad 7 is made of rubber and has good elasticity. Through the above structure, the anti-slip pad 7 can effectively absorb the vibration and noise generated during the lifting and lowering of the electric push rod 5, making the operation quieter.

[0032] During operation, the workpiece is placed on the fixing component 17 for fixation. The table 12 is rotated, causing the workpiece on top to rotate as well. The workpiece is adjusted to a suitable angle. Then, the handle 16 is rotated, causing the screw 15 to rotate. The screw 15 moves as it rotates, inserting itself into the positioning hole 13. This structure effectively adjusts the angle of the workpiece, allowing different surfaces to be sequentially processed, thus improving processing accuracy and efficiency, reducing frequent tooling changes, saving considerable time, and increasing tooling utilization. The workpiece is placed on top of the placement table 2, and the process is started. Cylinder 22 drives the fixed plate 23 to move downwards, and the fixed plate 23 contacts the workpiece to fix it. As the fixed plate 23 moves, it drives the guide rod 24 to slide on the bracket 21. The positioning block 25 limits the guide rod 24. This structure effectively fixes the workpiece, reducing workpiece position deviation during processing and improving processing accuracy. The guide rod 24 and positioning block 25 make the fixed plate 23 more stable during movement, indirectly improving its fixing effect. When the platform 12 rotates, it drives the slider 31 at the end of the connecting rod 32 to slide inside the track 3. Through this structure… The system effectively supports and guides the platform 12, reducing wobbling during rotation and improving the overall stability of the fixture. Support rods 4 and handles 41 are installed on the placement platform 2. When adjusting the workpiece angle, the operator grips the handle 41 and rotates the workpiece. This structure provides the operator with a point of leverage, making it easier to rotate the platform 12 and adjust the workpiece position, thus improving ease of use. Activating the electric push rod 5 drives the base plate 1 to move up and down, thereby adjusting the height of the workpiece on top of the placement platform 2. This structure effectively adjusts the workpiece's height, thereby changing its position. The operator's viewing angle for the workpiece allows for a clearer view of the processing area. A protective pad 6, made of soft rubber, is installed at the bottom of the fixed plate 23. This structure effectively reduces wear on the workpiece caused by the fixed plate 23, protecting the workpiece surface. Furthermore, the protective pad 6 increases the friction between the fixed plate 23 and the workpiece, resulting in better fixation of the workpiece by the fixed plate 23. An anti-slip pad 7, also made of rubber with good elasticity, is installed at the bottom of the electric push rod 5. This structure effectively absorbs vibrations and noise generated during the lifting and lowering of the electric push rod 5, making the operation quieter.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-angle precision positioning fixture for workpieces in precision milling and grinding, characterized in that: The system includes a base plate (1); a rotating shaft (11) is rotatably connected to the top of the base plate (1); a platform plate (12) is fixedly connected to the top of the rotating shaft (11); a plurality of positioning holes (13) are provided in the middle of the platform plate (12); the positioning holes (13) are distributed in a circular array; two L-shaped plates (14) are fixedly connected to the middle of the base plate (1); the two L-shaped plates (14) are symmetrically arranged; a screw (15) is threadedly connected to the side wall of the L-shaped plate (14); the screw (15) is located at a position corresponding to the positioning hole (13); a handle (16) is fixedly connected to the end of the screw (15); and a fixing component (17) is fixedly connected to the top of the platform plate (12).

2. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 1, characterized in that: The fixing assembly (17) includes a placement platform (2); a bracket (21) is fixedly connected to the top of the placement platform (2); a cylinder (22) is fixedly connected to the top of the bracket (21); a fixing plate (23) is fixedly connected to the output end of the cylinder (22); two guide rods (24) are slidably connected to the top of the bracket (21); the two guide rods (24) are symmetrically arranged; the guide rods (24) are fixedly connected to the top of the fixing plate (23); a positioning block (25) is fixedly connected to the top of the guide rods (24).

3. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to a track (3); multiple sliders (31) are slidably connected inside the track (3); the sliders (31) are distributed in a circular array; a connecting rod (32) is fixedly connected to the middle of the sliders (31); the connecting rod (32) is fixedly connected to the bottom of the platform (12).

4. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 2, characterized in that: The middle part of the placement platform (2) is fixed with multiple support rods (4); the support rods (4) are distributed in a circular array; the ends of the support rods (4) are fixed with handrails (41).

5. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 1, characterized in that: Two sets of electric push rods (5) are fixed to the bottom of the base plate (1); the two sets of electric push rods (5) are arranged symmetrically.

6. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 2, characterized in that: The bottom of the fixing plate (23) is bonded with a protective pad (6); the protective pad (6) is made of rubber.

7. The multi-angle precision positioning fixture for workpieces in precision milling and grinding according to claim 5, characterized in that: The bottom of the electric push rod (5) is bonded with an anti-slip pad (7); the anti-slip pad (7) is made of rubber.

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