Clamping and positioning fixture

Abstract

The utility model relates to the field of machining technology, and relates to a clamping and positioning fixture. The clamping assembly of the utility model clamps and positions the workpiece in the positioning groove and the limit groove, the positioning assembly positions the positioning block on the base, and the two pressing components respectively clamp the two ends of the positioning block to position it on the clamping station, which can realize the synchronous positioning of multiple workpieces, so that the workpieces are more stably arranged on the base, and the processing stability of the positioning fixture is increased; each processing surface of the workpiece is leaked through the processing opening, and multiple surfaces of the workpiece can be milled at one time without changing the processing fixture back and forth, making the processing of the workpiece faster and improving production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, and particularly to a clamping and positioning fixture. Background Art

[0002] Machining refers to the process of changing the size or performance of a workpiece through a mechanical device. According to the difference in processing methods, it can be divided into cutting processing and pressure processing. With the rapid development of modern mechanical processing, mechanical processing technology has developed rapidly, and many advanced mechanical processing technologies and methods have gradually emerged, such as micro-machining technology, rapid prototyping technology, precision and ultra-precision processing technology, etc. The increasing development of mechanical processing has made the processing efficiency and precision higher.

[0003] At present, for small batches that require turning of multiple sides of a workpiece, in order to ensure the accuracy of the processing, the workpiece is completely fixed in the fixture and can only be processed on one side. When additional working surfaces need to be processed, repositioning is required, which not only reduces work efficiency, but also the secondary positioning is likely to reduce the processing accuracy, thereby failing to guarantee the qualified rate of the product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a clamping and positioning fixture which increases the processing stability of the positioning fixture and can complete the milling of multiple surfaces of a workpiece at one time, making the processing of the workpiece faster and improving the production efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A clamping and positioning fixture, comprising:

[0007] A frame, on which a base is arranged, and a clamping station is arranged on the base;

[0008] A positioning block is arranged on the clamping station, and a plurality of positioning grooves for positioning the workpiece are provided on the positioning block;

[0009] A clamping assembly, disposed on the positioning block, and used to clamp and position the workpiece in the positioning groove;

[0010] A material pressing assembly is arranged on the frame, and the material pressing assembly includes two material pressing parts, which are respectively arranged on both sides of the clamping station, and the two material pressing parts are used to press and position the positioning block on the clamping station;

[0011] A positioning assembly, disposed on the base, and used for positioning the positioning block;

[0012] Among them, a processing block is arranged on the positioning block, and a limiting groove for placing a workpiece is arranged on the processing block, and the limiting groove is connected with the positioning groove. A plurality of processing openings are opened on the side wall of the processing block, and the processing openings are used to expose all processing surfaces of the workpiece.

[0013] In one embodiment of the utility model, the positioning assembly includes a support block, the base is provided with a plurality of avoidance grooves matching the clamping assembly, the support block is arranged between two adjacent avoidance grooves, the support block is provided with a positioning pin, the positioning block is provided with a positioning hole, the positioning pin is passed through the positioning hole, and the diameter of the positioning hole is larger than the diameter of the positioning pin.

[0014] In one embodiment of the utility model, a first opening is provided on the support block, a first magnet is provided in the first opening, a second opening is provided on the positioning block, a second magnet is provided on the second opening, and the second magnet is magnetically connected to the first magnet.

[0015] In one embodiment of the utility model, a support spring is disposed in the first opening, the first magnet is disposed on the free end of the support spring, the first magnet is slidably disposed in the first opening, and the magnetic end of the first magnet extends out of the first opening.

[0016] In one embodiment of the utility model, the positioning assembly includes a mounting block, the mounting block is arranged on one side of the base, a slot is provided on the mounting block, a clamping block is provided on the positioning block, the clamping block is clamped on the slot, and a clamping component is provided at the other end of the base, and the clamping component is used to clamp the positioning block against the mounting block.

[0017] In one embodiment of the utility model, a fixing block is provided on the base, a fixing hole is provided on the fixing block, a spring plunger is provided on the fixing hole, and a fixing groove matching the ball head end of the spring plunger is provided on the positioning block.

[0018] In one embodiment of the utility model, the clamping assembly includes a clamping plate, clamping blocks are provided at both ends of the clamping plate, the clamping block is provided with a clamping end matching the end face of the workpiece, the clamping plate is provided with a fixing bolt, and the clamping plate is fixedly connected to the positioning block via the fixing bolt.

[0019] In one embodiment of the utility model, a support frame is arranged in the limiting groove, a support cylinder matching the workpiece is arranged on the support frame, the support cylinder is connected to the inner wall of the workpiece, and the support frame is connected to the processing block by screws.

[0020] In one embodiment of the utility model, the pressing component includes a pressing frame, which is arranged on the base. A pressing cylinder is arranged on the pressing frame, and the pressing cylinder is drivingly connected to a pressing plate. The pressing cylinder drives the pressing plate to press the positioning block onto the base.

[0021] In one embodiment of the utility model, a pressing block is provided on the free end of the pressing plate, a positioning protrusion is provided on the pressing block, a positioning groove matching the positioning protrusion is provided on the positioning block, and the pressing cylinder drives the positioning protrusion on the pressing block to be inserted into the positioning groove.

[0022] Beneficial effects of the utility model:

[0023] The clamping assembly of the utility model presses and positions the workpiece in the positioning groove and the limit groove, the positioning assembly positions the positioning block on the base, and the two pressing components respectively press the two ends of the positioning block to position it on the clamping station, which can realize the synchronous positioning of multiple workpieces, so that the workpieces are more stably arranged on the base, and the processing stability of the positioning fixture is increased; each processing surface of the workpiece leaks out through the processing opening, and there is no need to replace the processing fixture back and forth, and the milling of multiple surfaces of the workpiece can be completed at one time, which makes the processing of the workpiece faster and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a clamping and positioning fixture of the utility model.

[0025] Figure 2 It is a schematic diagram of the clamping assembly of the utility model.

[0026] Figure 3 It is a schematic diagram of a processing block of the utility model.

[0027] Figure 4 It is a schematic diagram of the processing opening of the utility model.

[0028] Figure 5 It is a schematic diagram of the positioning component of the utility model.

[0029] Figure 6 It is a schematic diagram of the tightening component of the utility model.

[0030] Explanation of the numbers in the figure: 1. Frame; 11. Base; 12. Avoidance groove; 13. Support block; 2. Clamping assembly; 21. Clamping plate; 22. Clamping block; 23. Fixing bolt; 24. Clamping end; 3. Positioning block; 31. Positioning hole; 32. Second magnet; 33. First opening; 34. First magnet; 35. Support spring; 36. Positioning pin; 37. Mounting block; 38. Slot; 39. Block; 391. Spring plunger; 4. Processing block; 41. Processing opening; 5. Workpiece; 51. Processing surface; 6. Pressing component; 61. Pressing frame; 62. Pressing cylinder; 63. Pressing plate; 64. Pressing block; 65. Positioning groove; 66. Positioning protrusion; 7. Support cylinder; 71. Support frame. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Reference Figure 1-6 As shown, a clamping and positioning fixture comprises:

[0033] A frame 1, on which a base 11 is arranged, and a clamping station is arranged on the base 11;

[0034] A positioning block 3 is arranged on the clamping station, and a plurality of positioning grooves for positioning the workpiece 5 are provided on the positioning block 3;

[0035] A clamping assembly 2 is arranged on the positioning block 3, and the clamping assembly 2 is used to clamp and position the workpiece 5 in the positioning groove;

[0036] A material pressing assembly is arranged on the frame 1, and the material pressing assembly includes two material pressing parts 6, which are respectively arranged on both sides of the clamping station, and the two material pressing parts 6 are used to press and position the positioning block 3 on the clamping station;

[0037] A positioning component is disposed on the base 11 and is used to position the positioning block 3;

[0038] Among them, a processing block 4 is arranged on the positioning block 3, and a limiting groove for placing the workpiece 5 is arranged on the processing block 4, and the limiting groove is connected with the positioning groove. A plurality of processing openings 41 are opened on the side wall of the processing block 4, and the processing openings 41 are used to expose all processing surfaces 51 of the workpiece 5.

[0039] The clamping assembly 2 of the utility model presses and positions the workpiece 5 in the positioning groove and the limit groove, the positioning assembly positions the positioning block 3 on the base 11, and the two pressing components 6 respectively press the two ends of the positioning block 3 to position it on the clamping station, which can realize the synchronous positioning of multiple workpieces 5, so that the workpiece 5 is more stably set on the base 11, and the processing stability of the positioning fixture is increased; each processing surface 51 of the workpiece 5 leaks out through the processing opening 41, and there is no need to replace the processing fixture back and forth, and the milling of multiple surfaces of the workpiece 5 can be completed at one time, making the processing of the workpiece 5 faster, improving production efficiency, high molding accuracy, good part accuracy stability, and improved part quality and technology.

[0040] In one embodiment of the utility model, the positioning assembly includes a support block 13, the base 11 is provided with a plurality of avoidance grooves 12 matching the clamping assembly 2, the support block 13 is arranged between two adjacent avoidance grooves 12, a positioning pin 36 is arranged on the support block 13, a positioning hole 31 is arranged on the positioning block 3, the positioning pin 36 is penetrated through the positioning hole 31, and the diameter of the positioning hole 31 is larger than the diameter of the positioning pin 36.

[0041] Specifically, the positioning block 3 is placed on the support block 13, and the positioning pin 36 is passed through the positioning hole 31. Since the diameter of the positioning hole 31 is larger than the diameter of the positioning pin 36, the positioning block 3 can be roughly positioned, which is convenient for the subsequent clamping and positioning of the positioning block 3, thereby ensuring the clamping accuracy of the positioning block 3.

[0042] In one embodiment of the utility model, a first opening 33 is provided on the support block 13, a first magnet 34 is provided in the first opening 33, a second opening is provided on the positioning block 3, a second magnet 32 ​​is provided on the second opening, and the second magnet 32 ​​is magnetically connected to the first magnet 34.

[0043] In one embodiment of the utility model, a support spring 35 is disposed in the first opening 33 , the first magnet 34 is disposed on the free end of the support spring 35 , the first magnet 34 is slidably disposed in the first opening 33 , and the magnetic end of the first magnet 34 extends out of the first opening 33 .

[0044] Specifically, when the positioning block 3 is in close contact with the support block 13, the magnetic end of the first magnet 34 extends out of the first opening 33 and is magnetically connected to the second magnet 32. Under the action of the positioning block 3's own weight, the first magnet 34 is magnetically pressed and retracted into the first opening 33, which can make the alignment accuracy of the positioning block 3 and the support block 13 more accurate, ensure the connection effect between the positioning block 3 and the support block 13, prepare for the operation process of the next workstation, and ensure the subsequent machining effect; the first magnet 34 is slidably arranged in the first opening 33, which plays a certain guiding role in the positioning block 3, avoiding position displacement of the positioning block 3 when the positioning block 3 is blanked.

[0045] The utility model can be provided with any one of the positioning components in the two embodiments at the same time, and can also adopt the positioning components in the two embodiments at the same time according to actual conditions to achieve a better positioning effect.

[0046] In one embodiment of the utility model, the positioning assembly includes a mounting block 37, the mounting block 37 is arranged on one side of the base 11, a slot 38 is provided on the mounting block 37, a clamping block 39 is provided on the positioning block 3, the clamping block 39 is clamped on the slot 38, and a tightening component is provided at the other end of the base 11, and the tightening component is used to tighten the positioning block 3 to the mounting block 37.

[0047] Specifically, one end of the positioning block 3 having the clamping block 39 is clamped in the clamping groove 38, and the clamping component presses the positioning block 3 against the mounting block 37, thereby completing the positioning of the positioning block 3, facilitating the subsequent clamping and positioning of the positioning block 3, and ensuring the processing accuracy of the workpiece 5.

[0048] In one embodiment of the utility model, a fixing block is provided on the base 11, a fixing hole is provided on the fixing block, a spring plunger 391 is provided on the fixing hole, and a fixing groove matching the ball head end of the spring plunger 391 is provided on the positioning block 3.

[0049] Specifically, the fixing groove at one end of the positioning block 3 is connected to the ball head end of the spring plunger 391. The positioning block 3 compresses the spring plunger 391 to prevent the positioning block 3 from being offset, skewed or misaligned, and can quickly and accurately reach the ideal positioning position, saving positioning time.

[0050] In one embodiment of the utility model, the clamping assembly 2 includes a clamping plate 21, clamping blocks 22 are provided at both ends of the clamping plate 21, and a clamping end 24 matching the end face of the workpiece 5 is provided on the clamping block 22. A fixing bolt 23 is provided on the clamping plate 21, and the clamping plate 21 is fixedly connected to the positioning block 3 via the fixing bolt 23.

[0051] Specifically, the clamping plate 21 is fixedly connected to the positioning block 3 by the fixing bolts 23, and two workpieces 5 are positioned in the positioning grooves at one time, which can realize rapid clamping of the workpieces 5, prepare for the operation process of the next station, and ensure the subsequent machining effect.

[0052] In one embodiment of the utility model, a support frame 71 is arranged in the limiting groove, and a support cylinder 7 matching the workpiece 5 is arranged on the support frame 71, the support cylinder 7 is connected to the inner wall of the workpiece 5, and the support frame 71 is connected to the processing block 4 by screws.

[0053] Specifically, a suitable support frame 71 is selected according to the specifications of the workpiece 5, the support frame 71 is connected to the processing block 4 by screws, the workpiece 5 is placed in the processing groove through the positioning groove, and the support cylinder 7 is connected to the inner wall of the workpiece 5. During the machining process, the side wall of the workpiece 5 can be supported to improve the machining accuracy. At the same time, the setting of the support frame 71 can also avoid the problem of shaking of the workpiece 5 and reduce the dimensional defects caused by shaking.

[0054] In one embodiment of the utility model, the pressing component 6 includes a pressing frame 61, and the pressing frame 61 is arranged on the base 11. A pressing cylinder 62 is arranged on the pressing frame 61. The pressing cylinder 62 is drivingly connected to a pressing plate 63. The pressing cylinder 62 drives the pressing plate 63 to press the positioning block 3 onto the base 11.

[0055] Specifically, the pressing cylinder 62 drives the pressing plate 63 to press the positioning block 3 onto the base 11. After the positioning and pressing operation, it is convenient to carry out machining operations, which is beneficial to improving the milling quality, so that the size of the product after milling is within the specification control, and the dimensional defects caused by shaking are reduced.

[0056] In one embodiment of the utility model, a pressing block 64 is provided on the free end of the pressing plate 63, a positioning protrusion 66 is provided on the pressing block 64, a positioning groove 65 matching the positioning protrusion 66 is provided on the positioning block 3, and the pressing cylinder 62 drives the positioning protrusion 66 on the pressing block 64 to be inserted into the positioning groove 65.

[0057] Specifically, the pressing cylinder 62 drives the positioning protrusion 66 on the pressing block 64 to be inserted into the positioning groove 65, so as to facilitate the rapid pressing of the positioning block, further avoid the problem of the positioning block 3 shaking during processing, and thus increase the stability of the pressing block 64.

[0058] Usage Process

[0059] Select a suitable support frame 71 according to the specifications of the workpiece 5, connect the support frame 71 to the processing block 4 through screws, place the workpiece 5 in the processing groove through the positioning groove, fix the clamping plate 21 with the positioning block 3 through the fixing bolts 23, and clamp the workpiece 5 on the positioning block 3 through the clamping blocks 22 on both sides of the clamping plate 21. Clamp one end of the positioning block 3 with the clamping block 39 in the clamping groove 38, and connect the fixing groove at the other end to the ball end of the spring plunger 391. At the same time, the positioning hole 31 on the positioning block 3 is penetrated on the positioning pin 36. When the positioning block 3 is tightly attached to the support block 13, The magnetic end of the first magnet 34 extends out of the first opening 33 and is magnetically connected to the second magnet 32. Under the deadweight of the positioning block 3, the first magnet 34 is magnetically pressed and retracted into the first opening 33, thereby completing the positioning of the positioning block 3. The pressing cylinder 62 drives the positioning protrusion 66 on the pressing block 64 to be inserted into the positioning groove 65, thereby pressing the positioning block 3 on the base 11, completing the rapid clamping of the workpiece 5, and the processing opening 41 leaks all the processing surfaces 51 of the workpiece 5, so that the workpiece 5 can be milled at one time, with high processing efficiency, saving time and effort.

[0060] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A clamping and positioning fixture, characterized in that: include: A frame, on which a base is arranged, and a clamping station is arranged on the base; A positioning block is arranged on the clamping station, and a plurality of positioning grooves for positioning the workpiece are provided on the positioning block; A clamping assembly, disposed on the positioning block, and used to clamp and position the workpiece in the positioning groove; A material pressing assembly is arranged on the frame, and the material pressing assembly includes two material pressing parts, which are respectively arranged on both sides of the clamping station, and the two material pressing parts are used to press and position the positioning block on the clamping station; A positioning assembly, disposed on the base, and used for positioning the positioning block; Among them, a processing block is arranged on the positioning block, and a limiting groove for placing a workpiece is arranged on the processing block, and the limiting groove is connected with the positioning groove. A plurality of processing openings are opened on the side wall of the processing block, and the processing openings are used to expose all processing surfaces of the workpiece.

2. The clamping and positioning fixture according to claim 1, characterized in that: The positioning assembly includes a support block, a plurality of avoidance grooves matching the clamping assembly are formed on the base, the support block is arranged between two adjacent avoidance grooves, a positioning pin is arranged on the support block, a positioning hole is arranged on the positioning block, the positioning pin is passed through the positioning hole, and the diameter of the positioning hole is larger than the diameter of the positioning pin.

3. The clamping and positioning fixture according to claim 2, characterized in that: The support block is provided with a first opening, a first magnet is provided in the first opening, the positioning block is provided with a second opening, a second magnet is provided on the second opening, and the second magnet is magnetically connected to the first magnet.

4. The clamping and positioning fixture according to claim 3, characterized in that: A support spring is disposed in the first opening, the first magnet is disposed on the free end of the support spring, the first magnet is slidably disposed in the first opening, and the magnetic end of the first magnet extends out of the first opening.

5. The clamping and positioning fixture according to claim 1, characterized in that: The positioning assembly includes a mounting block, which is arranged on one side of the base. A slot is provided on the mounting block, and a clamping block is provided on the positioning block. The clamping block is clamped on the slot. A tightening component is provided at the other end of the base, and the tightening component is used to tighten the positioning block against the mounting block.

6. The clamping and positioning fixture according to claim 5, characterized in that: The base is provided with a fixing block, the fixing block is provided with a fixing hole, the fixing hole is provided with a spring plunger, and the positioning block is provided with a fixing groove matching the ball head end of the spring plunger.

7. The clamping and positioning fixture according to claim 1, characterized in that: The clamping assembly includes a clamping plate, clamping blocks are arranged at both ends of the clamping plate, the clamping block is provided with a clamping end matching the end surface of the workpiece, the clamping plate is provided with fixing bolts, and the clamping plate is fixedly connected to the positioning block through the fixing bolts.

8. The clamping and positioning fixture according to claim 1, characterized in that: A support frame is arranged in the limiting groove, a support cylinder matching the workpiece is arranged on the support frame, the support cylinder is connected to the inner side wall of the workpiece, and the support frame is connected to the processing block through screws.

9. The clamping and positioning fixture according to claim 1, characterized in that: The pressing component comprises a pressing frame, which is arranged on the base. A pressing cylinder is arranged on the pressing frame, and the pressing cylinder is drivingly connected to a pressing plate. The pressing cylinder drives the pressing plate to press the positioning block onto the base.

10. The clamping and positioning fixture according to claim 9, characterized in that: A pressing block is provided on the free end of the pressing plate, a positioning protrusion is provided on the pressing block, a positioning groove matching the positioning protrusion is provided on the positioning block, and the pressing cylinder drives the positioning protrusion on the pressing block to be inserted into the positioning groove.

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