Tool for rapidly clamping thin-wall sleeve part

Abstract

The invention discloses a tool for rapid clamping of thin-wall sleeve parts, mainly relates to the technical field of thin-wall sleeve part clamping, and comprises a fixed base, a housing is arranged at the upper end of the fixed base, a rotating cam is rotatably mounted in the fixed base, clamping plates are slidably mounted on the periphery of the rotating cam, and a rotating rod is connected to the rotating cam. A limiting cone sliding plate is arranged in the rotating rod, and an eccentric handle is arranged on the limiting cone sliding plate; rapid clamping of the thin-wall part can be achieved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of clamping thin-walled sleeve parts, and in particular to a tooling for fast clamping thin-walled sleeve parts. Background Art

[0002] Thin-walled sleeve parts need to be fixed and clamped during processing. The general clamping of thin-walled sleeve parts takes a lot of processing time, and the accuracy of the processed parts is difficult to guarantee. The dimensional accuracy and geometric tolerance accuracy are difficult to meet the requirements of the drawings, and even quality problems often occur, resulting in the scrapping of parts, thereby affecting the product quality and product delivery of the entire project, and bringing uncontrollable risks to the quality of product parts. In order to ensure the production and processing accuracy and clamping efficiency of thin-walled sleeve parts, reduce the operating time of part clamping, reduce the deformation of thin-walled sleeve parts during clamping, ensure the dimensional stability of parts, improve processing efficiency and reduce the total processing cost, especially the processing accuracy and clamping efficiency of thin-walled sleeve parts after clamping, a tooling that can be clamped quickly is needed. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the above-mentioned problems, the present invention needs to provide a tool for quick clamping of thin-walled sleeve parts, which can achieve quick clamping and reduce damage to the parts.

[0004] (II) Technical solution In view of the above technical problems, the present invention provides a tool for quickly clamping thin-walled sleeve parts, including a fixed base, a cover shell detachably installed on the top of the fixed base, a bottom cover plate is provided on the bottom of the fixed base, a boss is provided on the top of the fixed base, the diameter of the cover shell is smaller than the diameter of the boss of the fixed base, a rotating cam is rotatably installed in the fixed base, a clamping plate is slidably installed around the rotating cam, a rotating rod is fixedly connected to the bottom of the rotating cam, a limiting cone slide is slidably installed in the rotating rod, an eccentric handle is rotatably installed on the limiting cone slide, the rotating rod will drive the rotating cam to rotate, so that the clamping plate expands outward or shrinks inward, and the limiting cone slide is used to fix the rotating rod or enable the rotating rod to rotate.

[0005] Furthermore, the clamping plate includes three clamping plates evenly arranged around the circumference, and each group of clamping plates has the same structure. The clamping plates include a sliding top block, which is fixedly connected to a stop plate seat. The stop plate seat is slidably installed on a fixed base, and a contraction spring is also provided between the stop plate seat and the fixed base. The end of the sliding top block away from the center of the fixed base is arc-shaped, and the annular diameter formed by each group of sliding top blocks after contraction is the same as the diameter of the cover shell. Each group of sliding top blocks is driven by a rotating cam.

[0006] Furthermore, the bottom of the rotating cam is a round shaft, and the rotating rod is divided into two sections, the first section is a hollow rod, and the second section is a solid rod. The solid rod and the round shaft of the rotating cam are connected by a positioning pin, and the rotating rod drives the rotating cam to rotate, and the outer side of the rotating cam contacts the sliding top block. When the rotating cam rotates, it drives the sliding top block to expand outward or retract inward; the end of the hollow rod is fixedly connected to the end shaft cover, and the limit cone slide plate is slidably installed in the hollow rod; the rotating rod rotates in the limit stop mouth.

[0007] Furthermore, the front end of the limiting cone slide is an inclined surface, a pressure spring is provided between the limiting cone slide and the end shaft cover, the eccentric handle is divided into two sections, the first section is a round rod, and the second section is a U-shaped frame. The two ends of the U-shape are round cakes, and the round cakes are eccentrically rotated and installed on the limiting cone slide by using a pin bolt.

[0008] Furthermore, the limit stop opening includes two parts, the first part is an arc-shaped opening on the side of the fixed base, and the second part is a toothed structure arranged above and below the arc-shaped opening.

[0009] Furthermore, when the pancake-shaped part of the eccentric handle close to the center contacts the end shaft cover, the inclined surface at the front end of the limiting cone slide engages with the toothed structure, and the rotating rod remains stationary; when the pancake-shaped part of the eccentric handle away from the center contacts the end shaft cover, the limiting cone slide disengages from the toothed structure, and the rotating rod will be able to rotate.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a rotating rod, a rotating cam and a sliding top block. The rotating rod is pushed clockwise to rotate with the rotating cam, so that the sliding top block can be quickly displaced outward to clamp the thin-walled sleeve parts, thereby reducing the auxiliary clamping time. The arc shape of the outer side of the sliding top block and the ring shape formed by the expansion can reduce the deformation of the thin-walled sleeve parts during clamping. By replacing the conventional clamping method in this way, the quality risk caused by the clamping deformation of the thin-walled sleeve parts is greatly reduced, the processing accuracy of the parts is improved, and the quality and processing efficiency are guaranteed; 2. The present invention is provided with a limiting cone slide plate, a pressure spring, a limiting stopper, and an eccentric handle, which can make the rotating rod have two states, namely, keeping fixed and being able to rotate. When the rotating rod rotates, the parts can be quickly disassembled or clamped, the operation is simple, and the quality risks such as shape and position tolerance deviation caused by clamping deformation are avoided, the precision quality of the parts is effectively guaranteed, and the processing time is reduced, which greatly improves the processing production efficiency and reduces the manufacturing processing cost; 3. The tooling structure is simple, economical and feasible, and can also be used as a separate product tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a top view of the present invention.

[0013] Figure 3 for Figure 2 Section view at AA in the middle.

[0014] Figure 4 for Figure 2 Cross-sectional view at BB in the middle.

[0015] Figure 5 Back view with the bottom cover hidden.

[0016] Figure 6 It is a schematic diagram from another angle of the present invention.

[0017] Figure numbers: 1-fixed base; 2-sliding top block; 3-cover; 4-rotating cam; 5-fastening screw; 6-bearing; 7-locking nut; 8-bearing end cover; 9-stop plate seat; 10-contraction spring; 11-rotating rod; 12-pressure spring; 13-limiting cone slide plate; 14-end shaft cover; 15-eccentric handle; 16-pin bolt; 17-pin nut; 18-bottom cover plate; 19-locating pin; 20-limiting card stop. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with specific embodiments. The present invention is explained by means of the illustrative embodiments and descriptions of the present invention, but is not intended to be a limitation of the present invention.

[0019] Example: Figure 1-Figure 6 The tooling shown is used for quick clamping of thin-walled sleeve parts, comprising a fixed base 1, a cover shell 3 is detachably mounted on the top of the fixed base 1 by means of fastening screws 5, and a bottom cover plate 18 is detachably mounted on the bottom of the fixed base 1 by means of fastening screws 5.

[0020] A boss is provided on the top of the fixed base 1. The diameter of the cover 3 is smaller than the diameter of the boss of the fixed base 1. The boss is used to support and place thin-walled sleeve parts.

[0021] A rotating cam 4 is rotatably installed in the fixed base 1, and a clamping plate is slidably installed around the rotating cam 4. The bottom of the rotating cam 4 is a round shaft, and the top is a cam. A bearing 6, a locking nut 7, and a bearing end cover 8 are also provided between the rotating cam 4 and the fixed base 1. The bearing end cover 8 is fixed to the fixed base 1 by the locking nut 7. The bearing 6, the locking nut 7, and the bearing end cover 8 are arranged to allow the rotating cam 4 to rotate better on the fixed base 1.

[0022] The clamping plate includes three clamping plates evenly arranged around the circumference, and each group of clamping plates has the same structure. The clamping plate includes a sliding top block 2, which is fixedly connected to a stop plate seat 9. The stop plate seat 9 is slidably installed on a fixed base 1. A sliding groove of fixed length is provided on the fixed base 1, and the stop plate seat 9 slides in the sliding groove. A contraction spring 10 is also provided between the stop plate seat 9 and the fixed base 1. One end of the contraction spring 10 is provided on the stop plate seat 9, and the other end is provided on the bearing end cover 8 to ensure the position of the stop plate seat 9 and enable the stop plate seat 9 to slide and reset.

[0023] The end of the sliding top block 2 away from the center of the fixed base 1 is in an arc shape, and the movement of the sliding top block 2 on the fixed base 1 is a centripetal contraction or an outward expansion movement. The diameter of the ring formed by the centripetal contraction of each group of sliding top blocks 2 is the same as the diameter of the cover shell 3. The diameter of the ring formed by the sliding top block 2 after the outward expansion can be the same as the boss of the fixed base 1, or it can be smaller or larger than the boss diameter of the fixed base 1, and it is set according to the specific situation.

[0024] A rotating rod 11 is fixedly connected to the bottom of the rotating cam 4. The rotating rod 11 is divided into two sections. The first section is a hollow rod and the second section is a solid rod. The solid rod and the circular axis of the rotating cam 4 are connected and fastened by a positioning pin 19 to achieve precise contact friction rotation; the end of the hollow rod is fixedly connected to the end shaft cover 14, and the limiting cone slide plate 13 is slidably installed in the hollow rod; the rotating rod 11 rotates in the limiting stop opening 20.

[0025] The front end of the limiting cone slide 13 is an inclined surface, and a pressure spring 12 is provided between the limiting cone slide 13 and the end shaft cover 14. One end of the pressure spring 12 is fixedly connected to the limiting cone slide 13, and the other end is fixedly connected to the end shaft cover 14, so that the limiting cone slide 13 can slide and reset in the rotating rod 11.

[0026] The eccentric handle 15 is divided into two sections, the first section is a round rod, and the second section is a U-shaped frame. The two ends of the U-shape are in the shape of a disc. The disc is eccentrically rotated and installed on the limiting cone slide 13 by means of a pin bolt 16. A pin nut 17 is provided on the outer side of the pin bolt 16 for fastening. A part of the disc is close to the center of the circle, and a part is away from the center of the circle. When the eccentric handle 15 is rotated, when the part close to the center of the circle contacts the end shaft cover 14, the limiting cone slide 13 engages with the toothed structure on the limiting stop port 20. When the part away from the center of the circle contacts the end shaft cover 14, the limiting cone slide 13 retreats.

[0027] The limit stop opening 20 includes two parts, the first part is an arc-shaped opening on the side of the fixed base 1, and the second part is a tooth-shaped structure arranged above and below the arc-shaped opening.

[0028] When the inclined surface at the front end of the limiting cone slide plate 13 is engaged with the toothed structure, the rotating rod 11 remains stationary; when the limiting cone slide plate 13 is disengaged from the toothed structure, the rotating rod 11 will rotate.

[0029] The working principle of the invention is: through the application of a quick clamping tooling for thin-walled sleeve parts suitable for batch production on machine tools, the traditional clamping operation mode of thin-walled sleeve parts is successfully replaced, and a low-cost and high-efficiency precision clamping operation process of thin-walled sleeve parts is realized.

[0030] Specifically, place the thin-walled sleeve part on the boss of the fixed base 1, rotate the rotating rod 11 clockwise, the rotating rod 11 drives the rotating cam 4 to rotate, and the rotating cam 4 pushes the sliding top block 2 to expand and move outward. At this time, the stop plate seat 9 follows the movement, and the contraction spring 10 is stretched, and the three sliding top blocks 2 evenly arranged on the circumference are used to expand into a ring, so as to quickly tighten the thin-walled sleeve part and keep the thin-walled sleeve part stationary.

[0031] At this time, the eccentric handle 15 is rotated, and then the rotating rod 11, under the action of the pressure spring 12, the limiting cone slide plate 13 will fall into the toothed structure on the limiting stop opening 20, so that the rotating rod 11 remains fixed, and the thin-walled sleeve parts can be quickly clamped.

[0032] When the operation is completed, the eccentric handle 15 is rotated again to drive the limit cone slide plate 13 to retreat, so that the limit cone slide plate 13 is disengaged from the toothed structure on the limit stop opening 20, and then the rotating rod 11 is rotated counterclockwise, and the rotating rod 11 drives the rotating cam 4 to rotate. Under the action of the contraction spring 10, the stop plate seat 9 and the sliding top block 2 will be reset, and the sliding top block 2 will shrink centripetally, realizing the automatic loosening of the thin-walled sleeve parts, and then realizing the disassembly operation of the parts; the thin-walled sleeve parts quick clamping tooling is easy to use and simple to operate.

[0033] Any matters not described in the present invention are applicable to the prior art.

Claims

1. A tool for quickly clamping thin-walled sleeve parts, comprising a fixed base (1), a cover shell (3) being detachably mounted on the top of the fixed base (1), and a bottom cover plate (18) being provided on the bottom of the fixed base (1), characterized in that: A boss is arranged on the top of the fixed base (1), the diameter of the cover shell (3) is smaller than the diameter of the boss of the fixed base (1), a rotating cam (4) is rotatably installed in the fixed base (1), a clamping plate is slidably installed around the rotating cam (4), a rotating rod (11) is fixedly connected to the bottom of the rotating cam (4), a limiting cone slide (13) is slidably installed in the rotating rod (11), an eccentric handle (15) is rotatably installed on the limiting cone slide (13), the rotating rod (11) drives the rotating cam (4) to rotate, so that the clamping plate expands outward or retracts inward, and the limiting cone slide (13) is used to fix the rotating rod (11) or enable the rotating rod (11) to rotate.

2. A tool for quick clamping of thin-walled sleeve parts according to claim 1, characterized in that: The clamping plate comprises three clamping plates evenly arranged on a circumference, each group of clamping plates has the same structure, the clamping plates comprise a sliding top block (2), the sliding top block (2) is fixedly connected to a stop plate seat (9), the stop plate seat (9) is slidably mounted on a fixed base (1), and a contraction spring (10) is further provided between the stop plate seat (9) and the fixed base (1); the end of the sliding top block (2) away from the center of the fixed base (1) is in an arc shape, and the annular diameter formed by each group of sliding top blocks (2) after contraction is the same as the diameter of the cover shell (3); each group of sliding top blocks (2) is driven by a rotating cam (4).

3. A tool for quick clamping of thin-walled sleeve parts according to claim 2, characterized in that: The bottom of the rotating cam (4) is a round shaft, and the rotating rod (11) is divided into two sections, the first section is a hollow rod, and the second section is a solid rod. The solid rod and the round shaft of the rotating cam (4) are connected by a positioning pin (19). The rotating rod (11) drives the rotating cam (4) to rotate, and the outer side of the rotating cam (4) contacts the sliding top block (2). When the rotating cam (4) rotates, the sliding top block (2) is driven to expand outward or retract inward; the end of the hollow rod is fixedly connected to the end shaft cover (14), and the limiting cone slide plate (13) is slidably installed in the hollow rod; the rotating rod (11) rotates in the limiting stop opening (20).

4. A tool for quick clamping of thin-walled sleeve parts according to claim 3, characterized in that: The front end of the limiting cone slide plate (13) is an inclined surface, and a pressure spring (12) is provided between the limiting cone slide plate (13) and the end shaft cover (14). The eccentric handle (15) is divided into two sections, the first section is a round rod, and the second section is a U-shaped frame. The two ends of the U-shaped frame are in the shape of round cakes, and the round cakes are eccentrically rotatably mounted on the limiting cone slide plate (13) by using a pin bolt (16).

5. A tool for quick clamping of thin-walled sleeve parts according to claim 3, characterized in that: The position-limiting locking opening (20) comprises two parts, the first part being an arc-shaped opening on the side of the fixed base (1), and the second part being a toothed structure arranged above and below the arc-shaped opening.

6. A tool for quick clamping of thin-walled sleeve parts according to claim 4, characterized in that: When the pancake-shaped portion of the eccentric handle (15) close to the center of the circle contacts the end shaft cover (14), the inclined surface at the front end of the limiting cone slide plate (13) engages with the toothed structure, and the rotating rod (11) remains stationary; when the pancake-shaped portion of the eccentric handle (15) away from the center of the circle contacts the end shaft cover (14), the limiting cone slide plate (13) disengages from the toothed structure, and the rotating rod (11) is able to rotate.

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