Quick clamping tool for special-shaped parts

Abstract

A quick-clamping fixture for irregularly shaped parts belongs to the field of mechanical manufacturing technology. An externally threaded cylinder is fixedly connected to the upper surface of a mother disc, an internally threaded cylinder is threadedly connected to the surface of the externally threaded cylinder, a hollow plate is fixedly connected to the upper surface of the internally threaded cylinder, a pull stud is fitted to the inner wall of the hollow plate, and a daughter disc is fixedly connected to the upper surface of the pull stud. This quick-clamping fixture for irregularly shaped parts, through the cooperation of a circular plate, a first rectangular hole, a locking bracket, a return spring, and a connecting block, allows the pull stud to directly position and fix the machined part on the daughter disc after insertion into the hollow plate, thus effectively shortening the time required for positioning and fixing the machined part. Furthermore, after the part is machined, the daughter disc and the part can be removed from the CNC machine tool together by turning on the air pump.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically a quick clamping fixture for irregularly shaped parts. Background Technology

[0002] CNC machine tools are numerically controlled machine tools, which are automated machine tools equipped with a program control system. This control system can logically process programs with control codes or other symbolic instructions, decode them and represent them with coded numbers, input them to the CNC device through an information carrier, and after calculation and processing, the CNC device sends out various control signals to control the machine tool's movements, automatically machining parts according to the shape and size required by the drawings.

[0003] Currently, when using CNC machine tools to process irregularly shaped parts, the parts to be processed need to be manually positioned and fixed by the operator, and the operation is quite cumbersome, resulting in long auxiliary time and extremely low efficiency. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a quick clamping fixture for irregularly shaped parts, so as to solve the problem that the operation of processing irregularly shaped parts is relatively cumbersome, resulting in long auxiliary time and low efficiency.

[0005] To achieve the above-mentioned objectives, this utility model provides a quick-clamping fixture for irregularly shaped parts, comprising a mother disc, an externally threaded cylinder fixedly connected to the upper surface of the mother disc, an internally threaded cylinder threadedly connected to the surface of the externally threaded cylinder, a hollow plate fixedly connected to the upper surface of the internally threaded cylinder, a pull stud fitted to the inner wall of the hollow plate, a daughter disc fixedly connected to the upper surface of the pull stud, slots on both sides of the pull stud, a circular plate fixedly connected to the inner wall of the internally threaded cylinder, a first rectangular hole formed inside the circular plate, locking brackets fitted to the inner walls of the slots, the first rectangular hole, and the upper and lower sides of the circular plate, and a return spring fixedly connected to the inner wall of the locking bracket, the surface of the return spring... Connecting blocks are fixedly connected to the upper surface of both the circular plate and the internal threaded cylinder. Conical sliders are fitted to the inner wall of the external threaded cylinder and the bottom of the locking bracket. A support ring is fitted to the bottom of the conical slider. The surface of the support ring is fixedly connected to the inner wall of the external threaded cylinder. Air holes are opened on the surface of the internal threaded cylinder. Circular holes are opened on both the left and right sides of the external threaded cylinder. A three-way pipe is fixedly connected to the inner wall of the circular hole. A solenoid valve is fixedly connected to the left end of the three-way pipe. An air distribution box is fixedly connected to the upper surface of the mother plate. An air pump is fixedly connected to the upper surface of the air distribution box. An air outlet pipe is fixedly connected to the air outlet end of the air pump and the upper surface of the air distribution box. A connecting pipe is fixedly connected to the surface of the air distribution box and the right end of the three-way pipe.

[0006] The present invention is further configured such that the locking bracket includes a rectangular slider, a retaining ring, a trapezoidal block, a column, and a circular ring. The surface of the rectangular slider is in contact with the inner wall of the first rectangular hole. The upper and lower sides of the circular plate are in contact with the surface of the retaining ring. The inner wall of the retaining ring is fixedly connected to the surface of the rectangular slider. The upper surface of the rectangular slider is fixedly connected to the bottom of the trapezoidal block. The surface of the trapezoidal block is in contact with the inner wall of the slot. The bottom of the rectangular slider is fixedly connected to the upper surface of the column. The bottom of the column is in contact with the surface of the conical slider. The side of the rectangular slider is fixedly connected to the side of the circular ring. The inner wall of the circular ring is fixedly connected to the surface of the return spring.

[0007] The present invention is further configured such that the top surface diameter of the conical slider is smaller than the bottom surface diameter of the conical slider, and a rectangular block is fixedly connected to the upper surface of the conical slider.

[0008] The present invention is further configured such that the air hole is located above the circular plate.

[0009] The present invention is further configured such that the top end of the tee pipe is located inside the externally threaded cylinder, and a protective net is fixedly connected to the top end of the tee pipe.

[0010] The present invention is further configured such that a T-shaped groove is formed on the upper surface of the sub-disc.

[0011] The present invention is further configured such that an annular groove is formed on the surface of the tapered slider, and a sealing ring is fitted on the inner wall of the annular groove, the surface of the sealing ring being in contact with the inner wall of the external threaded cylinder.

[0012] The present invention is further configured such that a second rectangular hole is provided inside the mother disc, a rectangular tube is fixedly connected to the inner wall of the second rectangular hole, an installation block is fitted to the inner wall of the rectangular tube, an installation hole is provided inside the installation block, limit blocks are fixedly connected to both the front and rear sides of the installation block, a limit groove is provided on the upper surface of the rectangular tube, and the inner wall of the limit groove is fixedly connected to the surface of the limit block.

[0013] The technical effects achieved by this utility model are as follows: This utility model discloses a quick-clamping fixture for irregularly shaped parts. Through the cooperation of a circular plate, a first rectangular hole, a locking bracket, a return spring, and a connecting block, the trapezoidal block on the locking bracket can automatically insert into the slot after the pull pin is inserted into the hollow plate. At this time, through the cooperation of the trapezoidal block, the slot, the pull pin, and the hollow plate, the machined parts on the sub-plate can be directly positioned and fixed, thereby effectively shortening the time required for positioning and fixing the machined parts. At the same time, when the air pump is turned on and the solenoid valve is closed, the conical slider can be moved upward by the air pump, and through the cooperation of the conical slider and the column, the trapezoidal block can be automatically separated from the slot. After the part is processed, the sub-plate and the part can be removed from the CNC machine tool by turning on the air pump.

[0014] This utility model discloses a quick-clamping fixture for irregularly shaped parts. By inserting a limiting block into a limiting groove, the mounting block can be prevented from moving horizontally within a rectangular tube. Furthermore, the rectangular tube is provided with multiple limiting grooves. By inserting the limiting block into different limiting grooves on the mounting block, the position of the mounting block on the master plate can be changed. This allows the position of the mounting holes on the quick-clamping fixture to be adjusted according to the hole positions on the mounting brackets of different data machines, thus enabling the quick-clamping fixture to be installed on various data machines. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 yes Figure 1 Sectional view at point BB.

[0018] Figure 4 yes Figure 1 Top view of the master disk.

[0019] Figure 5 yes Figure 1 Left view of the internally threaded cylinder.

[0020] Figure 6 yes Figure 1 Left view of a cylindrical internally threaded cylinder.

[0021] Figure 7 yes Figure 1 Front view of the pull stud.

[0022] Figure 8 yes Figure 1A top view of the neutron disk.

[0023] Figure 9 yes Figure 1 A bottom view of the neutron disk.

[0024] Figure 10 yes Figure 1 Top view of the middle circular plate.

[0025] Figure 11 yes Figure 1 Front view of the locking bracket.

[0026] Figure 12 yes Figure 1 Side view of the locking bracket.

[0027] Figure 13 yes Figure 1 Top view of the conical slider.

[0028] Figure 14 yes Figure 1 Front view of the conical slider.

[0029] Figure 15 yes Figure 1 The front view of the rectangular tube.

[0030] Figure 16 yes Figure 1 Left view of the installation block.

[0031] The attached diagram lists the components represented by each number as follows: 1. Mother plate; 2. External threaded cylinder; 3. Internal threaded cylinder; 4. Hollow plate; 5. Tie nail; 6. Daughter plate; 7. Slot; 8. Circular plate; 9. First rectangular hole; 10. Locking bracket; 101. Rectangular slider; 102. Retaining ring; 103. Trapezoidal block; 104. Column; 105. Circular ring; 11. Return spring; 12. Connecting block; 13. Conical slider; 14. Support ring; 15. Air hole; 16. Circular hole; 17. T-shaped pipe; 18. Solenoid valve; 19. Air distribution box; 20. Air pump; 21. Air outlet pipe; 22. Connecting pipe; 23. Rectangular block; 24. Protective net; 25. T-slot; 26. Annular groove; 27. Sealing ring; 28. Second rectangular hole; 29. ​​Rectangular cylinder; 30. Mounting block; 31. Mounting hole; 32. Limiting block; 33. Limiting groove. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 Figure 14 , Figure 15 , Figure 16 As shown, in this utility model, a quick-clamping fixture for irregularly shaped parts has an externally threaded cylinder 2 fixedly connected to the upper surface of a mother disc 1. An internally threaded cylinder 3 is threadedly connected to the surface of the externally threaded cylinder 2. A hollow plate 4 is fixedly connected to the upper surface of the internally threaded cylinder 3. A pull stud 5 is fitted to the inner wall of the hollow plate 4. A daughter disc 6 is fixedly connected to the upper surface of the pull stud 5. Slots 7 are provided on both the left and right sides of the pull stud 5. A circular plate 8 is fixedly connected to the inner wall of the internally threaded cylinder 3. A first rectangular hole 9 is provided inside the circular plate 8. Locking brackets 10 are fitted to the inner walls of the slots 7, the first rectangular hole 9, and the upper and lower sides of the circular plate 8. A return spring 11 is fixedly connected to the inner wall of the locking bracket 10. A connecting spring 11 is fixedly connected to the surface of the return spring 11 and the upper surface of the circular plate 8. A tapered slider 13 is fitted to the inner wall of the external threaded cylinder 2 and the bottom of the locking bracket 10. A support ring 14 is fitted to the bottom of the tapered slider 13. The surface of the support ring 14 is fixedly connected to the inner wall of the external threaded cylinder 2. An air hole 15 is opened on the surface of the internal threaded cylinder 3. A round hole 16 is opened on both the left and right sides of the external threaded cylinder 2. A three-way pipe 17 is fixedly connected to the inner wall of the round hole 16. A solenoid valve 18 is fixedly connected to the left end of the three-way pipe 17. An air distribution box 19 is fixedly connected to the upper surface of the mother plate 1. An air pump 20 is fixedly connected to the upper surface of the air distribution box 19. An air outlet pipe 21 is fixedly connected to the air outlet end of the air pump 20 and the upper surface of the air distribution box 19. A connecting pipe 22 is fixedly connected to the surface of the air distribution box 19 and the right end of the three-way pipe 17.

[0035] The locking bracket 10 includes a rectangular slider 101, a retaining ring 102, a trapezoidal block 103, a column 104, and a circular ring 105. The surface of the rectangular slider 101 is in contact with the inner wall of the first rectangular hole 9. The upper and lower sides of the circular plate 8 are in contact with the surface of the retaining ring 102. The inner wall of the retaining ring 102 is fixedly connected to the surface of the rectangular slider 101. The upper surface of the rectangular slider 101 is fixedly connected to the bottom of the trapezoidal block 103. The surface of the trapezoidal block 103 is in contact with the inner wall of the slot 7. The bottom of the rectangular slider 101 is fixedly connected to the upper surface of the column 104. The bottom of the column 104 is in contact with the surface of the conical slider 13. The side of the rectangular slider 101 is fixedly connected to the side of the circular ring 105. The inner wall of the circular ring 105 is fixedly connected to the surface of the return spring 11.

[0036] Among them, the top diameter of the conical slider 13 is smaller than the bottom diameter of the conical slider 13. A rectangular block 23 is fixedly connected to the upper surface of the conical slider 13. The air hole 15 is located above the circular plate 8. The top end of the three-way pipe 17 is located inside the external threaded cylinder 2. A protective net 24 is fixedly connected to the top end of the three-way pipe 17. A T-shaped groove 25 is opened on the upper surface of the sub-disc 6. An annular groove 26 is opened on the surface of the conical slider 13. A sealing ring 27 is fitted on the inner wall of the annular groove 26. The surface of the sealing ring 27 is in contact with the inner wall of the external threaded cylinder 2.

[0037] It should be noted that the return spring 11 is made of high-strength spring steel (65Mn), and the preload is designed to be 0.6N-1.2N to ensure that the trapezoidal block 103 is reliably clamped (vibration resistance ≥5G). When the pull pin 5 is inserted into the hollow plate 4, the bottom surface of the pull pin 5 first contacts the inclined surface of the trapezoidal block 103. Then, through the pressure of the pull pin 5 on the inclined surface of the trapezoidal block 103, the distance between the two trapezoidal blocks 103 on the left and right sides can be increased, and the return spring 11 can be stretched. When the trapezoidal block 103 is aligned with the slot 7, through the pulling force of the return spring 11 on the ring 105, the trapezoidal block 103 can be automatically inserted into the slot 7, and the trapezoidal block 103 and the slot 7 can be tightly fitted. At this time, through the cooperation of the trapezoidal block 103, the slot 7, the pull pin 5 and the hollow plate 4, the processed parts on the sub-plate 6 can be directly positioned and fixed. The T-slot 25 is used to install the parts to be processed or blanks.

[0038] The conical slider 13 is supported by the support ring 14, and the inner and outer threads of the internal threaded cylinder 3 are connected through the air hole 15. At this time, the air pressure above the conical slider 13 is always the same as the outside air pressure when the conical slider 13 moves up or down through the air hole 15, so that the conical slider 13 can move smoothly. The connection between the conical slider 13 and the external threaded cylinder 2 is sealed by the sealing ring 27. After the internal threaded cylinder 3 is unscrewed from the external threaded cylinder 2, the conical slider 13 can be removed from the external threaded cylinder 2 by clamping the rectangular block 23 with pliers, so that the user can easily replace the conical slider 13 or the sealing ring 27. After the internal threaded cylinder 3 is separated from the external threaded cylinder 2, the protective net 24 can prevent foreign objects from entering the tee pipe 17. The protective net 24 is a stainless steel mesh with a hole diameter of 1mm.

[0039] When the air pump 20 is turned on and the solenoid valve 18 is turned off, the air pressure below the conical slider 13 is increased by the air pump 20. After the air pump 20 is turned on for 5 seconds, the thrust generated by the air pressure difference between the upper and lower parts of the conical slider 13 is greater than the pulling force of the return spring 11 on the ring 105. At this time, the conical slider 13 can be moved upward. Through the design of the slope angle (α=15°) of the conical slider 13 and the displacement ratio (1:0.8) of the column 104, the trapezoidal block 103 can automatically separate from the slot 7 when the conical slider 13 moves upward. After the trapezoidal block 103 separates from the slot 7, the daughter plate 6 can be directly taken away from the mother plate 1.

[0040] The mother plate 1 has a second rectangular hole 28 inside. A rectangular tube 29 is fixedly connected to the inner wall of the second rectangular hole 28. An installation block 30 is fitted to the inner wall of the rectangular tube 29. An installation hole 31 is opened inside the installation block 30. Limiting blocks 32 are fixedly connected to both the front and rear sides of the installation block 30. A limiting groove 33 is opened on the upper surface of the rectangular tube 29. The inner wall of the limiting groove 33 is fixedly connected to the surface of the limiting block 32.

[0041] The bottom surface of the mounting block 30 is flush with the bottom surface of the mother plate 1.

[0042] It should be noted that when the limiting block 32 is inserted into the limiting groove 33, the cooperation between the limiting block 32 and the limiting groove 33 prevents the mounting block 30 from moving horizontally within the rectangular tube 29. At the same time, the rectangular tube 29 is provided with multiple limiting grooves 33. Furthermore, by inserting the limiting block 32 into the limiting grooves 33 at different positions, the position of the mounting block 30 on the mother plate 1 can be changed. This allows the position of the mounting hole 31 on the quick clamping fixture to be adjusted according to the hole position on the mounting bracket of different data machine tools, thereby enabling the quick clamping fixture to be installed on various data machine tools.

[0043] The working principle of this utility model is as follows: First, the mounting block 30 is inserted into the rectangular tube 29, and the limiting block 32 is inserted into the limiting groove 33. At this time, through the cooperation of the limiting block 32 and the limiting groove 33, the mounting block 30 cannot move horizontally within the rectangular tube 29. Then, the bolt is inserted into the mounting hole 31, and the sub-disc 6 is fixed to the CNC machine tool installation by the bolt.

[0044] Then, insert the bolt into the fixing hole of the part to be processed, and screw the nut onto the bolt. Then, insert the nut into the T-slot 25 and tighten the bolt. At this time, the part to be processed is fixed on the sub-disc 6 by the cooperation of the bolt, nut and T-slot 25.

[0045] When fixing the workpiece to be processed on the CNC machine tool, the pull stud 5 is inserted into the hollow plate 4. The bottom surface of the pull stud 5 first contacts the inclined surface of the trapezoidal block 103. Then, through the pressure of the pull stud 5 on the inclined surface of the trapezoidal block 103, the distance between the two trapezoidal blocks 103 on the left and right sides can be increased, and the return spring 11 is stretched. When the trapezoidal block 103 is aligned with the slot 7, through the pulling force of the return spring 11 on the ring 105, the trapezoidal block 103 can be automatically inserted into the slot 7, and the trapezoidal block 103 and the slot 7 can be tightly fitted. At this time, through the cooperation of the trapezoidal block 103, the slot 7, the pull stud 5 and the hollow plate 4, the workpiece on the sub-plate 6 can be directly positioned and fixed.

[0046] After the workpiece is processed, the air pump 20 is turned on and the solenoid valve 18 is turned off. At this time, the air pump 20 increases the air pressure below the conical slider 13, and the increased air pressure causes the conical slider 13 to move upward. Then, through the inclined surface of the conical slider 13 and the column 104, the trapezoidal block 103 can automatically separate from the slot 7. After the trapezoidal block 103 separates from the slot 7, the daughter plate 6 can be directly taken away from the mother plate 1.

[0047] After the daughter plate 6 is removed from the mother plate 1, the air pump 20 is turned off and the solenoid valve 18 is opened. At this time, the air under the conical slider 13 can be discharged through the solenoid valve 18, and the conical slider 13 can automatically move down to the initial position by its own gravity.

[0048] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A quick-clamping fixture for irregularly shaped parts, characterized in that: Includes a mother disc (1), an external threaded cylinder (2) fixedly connected to the upper surface of the mother disc (1), an internal threaded cylinder (3) threadedly connected to the surface of the external threaded cylinder (2), a hollow plate (4) fixedly connected to the upper surface of the internal threaded cylinder (3), a pull stud (5) fitted to the inner wall of the hollow plate (4), a daughter disc (6) fixedly connected to the upper surface of the pull stud (5), slots (7) provided on both the left and right sides of the pull stud (5), a circular plate (8) fixedly connected to the inner wall of the internal threaded cylinder (3), a first rectangular hole (9) provided inside the circular plate (8), locking brackets (10) fitted to the inner wall of the slots (7), the inner wall of the first rectangular hole (9) and the upper and lower sides of the circular plate (8), a return spring (11) fixedly connected to the inner wall of the locking bracket (10), a connecting block (12) fixedly connected to the surface of the return spring (11) and the upper surface of the circular plate (8), the external threaded cylinder (2) being fixedly connected to the mother disc (1), the internal ... A conical slider (13) is fitted to the inner wall of the threaded cylinder (2) and the bottom of the locking bracket (10). A support ring (14) is fitted to the bottom of the conical slider (13). The surface of the support ring (14) is fixedly connected to the inner wall of the external threaded cylinder (2). An air hole (15) is opened on the surface of the internal threaded cylinder (3). A round hole (16) is opened on both the left and right sides of the external threaded cylinder (2). A tee is fixedly connected to the inner wall of the round hole (16). The left end of the three-way pipe (17) is fixedly connected to a solenoid valve (18), the upper surface of the mother plate (1) is fixedly connected to a gas distribution box (19), the upper surface of the gas distribution box (19) is fixedly connected to an air pump (20), the outlet end of the air pump (20) and the upper surface of the gas distribution box (19) are both fixedly connected to an outlet pipe (21), and the surface of the gas distribution box (19) and the right end of the three-way pipe (17) are both fixedly connected to a connecting pipe (22).

2. The quick clamping tool for a profiled part of claim 1, wherein: The locking bracket (10) includes a rectangular slider (101), a retaining ring (102), a trapezoidal block (103), a column (104), and a circular ring (105). The surface of the rectangular slider (101) is in contact with the inner wall of the first rectangular hole (9). The upper and lower sides of the circular plate (8) are in contact with the surface of the retaining ring (102). The inner wall of the retaining ring (102) is fixedly connected to the surface of the rectangular slider (101). The upper surface of the rectangular slider (101) is in contact with the inner wall of the retaining ring (105). The bottom of the trapezoidal block (103) is fixedly connected, the surface of the trapezoidal block (103) is in contact with the inner wall of the slot (7), the bottom of the rectangular slider (101) is fixedly connected with the upper surface of the column (104), the bottom of the column (104) is in contact with the surface of the conical slider (13), the side of the rectangular slider (101) is fixedly connected with the side of the ring (105), and the inner wall of the ring (105) is fixedly connected with the surface of the return spring (11).

3. The quick clamping tool for a profiled part of claim 1, wherein: The top diameter of the conical slider (13) is smaller than the bottom diameter of the conical slider (13), and a rectangular block (23) is fixedly connected to the upper surface of the conical slider (13).

4. The quick clamping tool for a profiled part of claim 1, wherein: The vent (15) is located above the circular plate (8).

5. The quick clamping tool for profiled parts of claim 1, wherein: The top end of the tee tube (17) is located inside the external threaded cylinder (2), and a protective net (24) is fixedly connected to the top end of the tee tube (17).

6. The quick clamping tool of a profiled part according to claim 1, characterized in that: The upper surface of the sub-disk (6) is provided with a T-shaped groove (25).

7. The quick clamping tool of profiled parts as claimed in claim 1 wherein: The surface of the tapered slider (13) is provided with an annular groove (26), and the inner wall of the annular groove (26) is fitted with a sealing ring (27), the surface of the sealing ring (27) is in contact with the inner wall of the external threaded cylinder (2).

8. The quick clamping tool of a profiled part according to claim 1, characterized in that: The mother plate (1) has a second rectangular hole (28) inside. A rectangular tube (29) is fixedly connected to the inner wall of the second rectangular hole (28). An installation block (30) is attached to the inner wall of the rectangular tube (29). An installation hole (31) is opened inside the installation block (30). Limiting blocks (32) are fixedly connected to both the front and rear sides of the installation block (30). A limiting groove (33) is opened on the upper surface of the rectangular tube (29). The inner wall of the limiting groove (33) is fixedly connected to the surface of the limiting block (32).

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