A support and compression device

Abstract

The utility model belongs to tool frock technical field discloses a kind of supporting and pressing device, comprising: base (1), locating block (2), big bearing (3), bottom plate (4), nut (7), pressing plate (8), stud (9), small bearing (11), support block (13);Base (1) includes bottom plate and riser, riser is vertically fixed at bottom plate top, the outer ring of big bearing (3) is supported in the round hole of riser, locating block (2) is supported in the inner ring of big bearing (3);Bottom plate (4) is fixedly connected with the right end surface of locating block (2), and both coaxial arrangement;Right locating pin is set in bottom plate (4) right end surface, for positioning installation to the left end of thin-walled cylindrical cylindrical part.The utility model is simple in structure, low in cost, easy to operate, can process all required size and form tolerance under the condition of positioning once, reduces the part processing cost.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, and in particular relates to a support and clamping device. Background Technology

[0002] A thin-walled cylindrical part has three evenly distributed arc shapes on its circumference that need to be machined. Since the center of each arc shape coincides with the center of the part, machining this shape requires five-axis simultaneous machining. However, five-axis simultaneous machining is inefficient and costly, and cannot meet the cycle time requirements for mass production. Therefore, there is an urgent need for a supporting and clamping device to solve the problems of part machining efficiency and cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to efficiently process arcs on thin-walled cylindrical parts.

[0004] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0005] A support and clamping device includes: a base 1, a positioning block 2, a large bearing 3, a base plate 4, a nut 7, a pressure plate 8, a stud 9, a small bearing 11, and a support block 13.

[0006] The base 1 includes a base plate and an upright plate. The upright plate is vertically fixed to the top of the base plate. The outer ring of the large bearing 3 is supported in the circular hole of the upright plate, and the positioning block 2 is supported in the inner ring of the large bearing 3. The base plate 4 is fixedly connected to the right end face of the positioning block 2, and the two are coaxially arranged.

[0007] A right locating pin is provided on the right end face of the base plate 4 for positioning and installing the left end of the thin-walled cylindrical part;

[0008] The base plate 4 has a threaded hole in the center, and the left end of the stud 9 is screwed into the threaded hole in the center of the base plate 4; the pressure plate 8 is disc-shaped, and its center hole is fitted onto the right end of the stud 9; the nut 7 is screwed onto the external thread on the right end of the stud 9, and is used to press the pressure plate 8 onto the end face of the thin-walled cylindrical part.

[0009] Two support blocks 13 are fixed side by side on the top of the base plate, below the stud 9; the top of each support block 13 is set as an arc shape, with two grooves symmetrically arranged on it, and four small bearings 11 are respectively set in the grooves on the top of the two support blocks 13 to support the bottom of the thin-walled cylindrical part.

[0010] The base plate 4 and the right end face of the positioning block 2 are positioned by two cylindrical pins, and the base plate 4 and the right end face of the positioning block 2 are fixedly connected by screws.

[0011] The base plate 4 is a circular thin plate with a stepped through hole in the center. One hole is a light hole that connects to the right end of the positioning block 2, and the other is a threaded hole that connects to the stud 9.

[0012] Among them, the large bearing 3 is a deep groove ball bearing.

[0013] Among them, the small bearing 11 is a deep groove ball bearing, and the four small bearings 11 are installed to the corresponding positions of the support block 13 through small cylindrical pins 12.

[0014] During processing, thin-walled cylindrical parts are clamped between the base plate and the pressure plate.

[0015] This invention has the following advantages: simple structure, low cost, easy operation, and can process all required dimensions and geometric tolerances in one positioning, thereby reducing the cost of parts processing and improving the efficiency of parts processing. Attached Figure Description

[0016] Figure 1 This is a front view of the support and clamping device of this utility model;

[0017] Figure 2 for Figure 1 Top view;

[0018] Figure 3 for Figure 1 The right view;

[0019] Figure 4 for Figure 1 Rotate view in direction B. Detailed Implementation

[0020] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, this embodiment provides a support and clamping device, including: a base 1, a positioning block 2, a large bearing 3, a base plate 4, a type A fixed positioning pin 5, a cylindrical pin 6, a nut 7, a pressure plate 8, a stud 9, a small screw 10, a small bearing 11, a small cylindrical pin 12, a support block 13, a large screw 14, and a type B fixed positioning pin 15.

[0022] The base 1 has an L-shaped structure, which is composed of two welded plates. There are 6 threaded holes and 2 pin holes on the top of the horizontal rectangular plate; the center of the vertical rectangular plate has a round hole for installing the large bearing 3; and 4 through holes are evenly distributed on the two longest sides of the vertical rectangular plate for installing the base plate 4.

[0023] Positioning block 2 is a stepped cylindrical end cap. There is a blind hole in the center of the large cylindrical surface of positioning block 2, which is connected to the main shaft of the equipment. The small cylindrical end face has 4 threaded holes and 2 pin holes evenly distributed for installing cylindrical pin 6 and small screw 10.

[0024] The large bearing 3 is a deep groove ball bearing, which is installed in the through hole of the base 1. The outer diameter of the large bearing 3 is interference-fitted with the inner diameter of the through hole of the base 1. The inner diameter of the large bearing 3 is matched with the outer diameter of the small cylinder of the positioning block 2 to achieve rotation.

[0025] The base plate 4 is a thin circular plate. A stepped through hole is designed in the center of the base plate 4. One hole is a light hole that connects to the small cylindrical end of the positioning block 2, and the other is a threaded hole that connects to the stud 9.

[0026] The type A fixed positioning pin 5 is a stepped cylindrical shape. The fixed positioning pin 5 consists of three cylinders of different sizes. The size of one end cylinder is the same as the size of the universal pin hole on the fixture. The size of the middle cylinder is 1 to 1.5 times larger than the two ends, which serves as a transition and strengthens the strength. The size of the other end cylinder is the same as the size of the hole in the part being machined.

[0027] The cylindrical pin 6 is cylindrical in shape, and there are two cylindrical pins 6. They are used to connect the positioning block 2 and the base plate 4 to fix the position.

[0028] Nut 7 is a shouldered hexagonal nut with a hexagonal shape and an internal threaded through hole. Nut 7 is installed on the external thread of stud 9. By engaging the thread, the pressure plate 8 moves axially, thereby pressing the workpiece.

[0029] The pressure plate 8 is cylindrical. One end of the pressure plate 8 is cylindrical, and the outer diameter of the cylinder is clearance-fitted with the inner diameter of the workpiece. The other end is tapered, which can reduce the weight of the pressure plate 8 and avoid protruding positions inside the workpiece.

[0030] The stud 9 is a slender cylindrical shape with external threads at both ends. One end has a longer thread, and the nut 7 is installed on the longer thread. The other end has a shorter thread, which is screwed into the threaded hole of the base plate 4. The stud 9 combines the pressure plate 8, the nut 7, and the base plate 4 together.

[0031] The small screw 10 is an external hexagonal cylindrical shape. The small screw 10 is installed in the four threaded holes of the base plate 4, and the base plate 4 is installed on the positioning block 2.

[0032] Small bearing 11 is a deep groove ball bearing. Four small bearings 11 are installed at corresponding positions on the support block 13 through small cylindrical pins 12, which serve to support and rotate the workpiece.

[0033] The small cylindrical pin 12 is cylindrical. The outer diameter of the small cylindrical pin 12 is interference-fitted with the inner diameter of the small bearing 11 and the inner diameter of the four small holes of the support block 13. The small bearing 11 is installed into the four holes of the support block 13 through the small cylindrical pin 12.

[0034] The support block 13 is a rectangular thin plate. There are two support blocks 13. A large arc-shaped notch is designed in the center. The size of the notch is determined by the outer diameter of the part being processed to ensure that there will be no interference after the part is installed. The two ends of the support block 13 have grooves in the middle. Through holes are designed in the normal direction of the grooves. The small bearing 11 is installed into the two grooves of the support block 13 through the small cylindrical pin 12.

[0035] The large screw 14 is a hexagonal cylindrical screw. The large screw 14 is screwed into the threaded hole of the base 1 to connect the support block 13 to the base 1.

[0036] The B-type fixed positioning pin 15 is a stepped cylindrical shape. It consists of two cylinders of different sizes and a rhomboid cylinder. The cylinder size at one end is the same as the common pin hole size on the fixture. The cylinder size in the middle part is 1 to 1.5 times larger than the two ends, which serves as a transition and strengthens the strength. The other end is a rhomboid cylinder shape, which can play a role in fine adjustment when the workpiece is installed, so that the workpiece can be smoothly installed on the tooling.

[0037] Connection Relationship: Base 1 is the main body supporting the clamping device. The large bearing 3 is installed in the circular hole of the vertical plate of base 1. The small end of the positioning block 2 is installed into the inner diameter of the large bearing 3, with the large end of the positioning block 2 facing the vertical plate of base 1. Base plate 4 is installed onto the vertical plate of base 1. Two cylindrical pins 6 position the small diameter end faces of base plate 4 and positioning block 2. Four small screws 10 are installed in the holes of base plate 4 and screwed into the threaded holes of the small diameter end faces of positioning block 2, thus fixing base plate 4 and positioning block 2 together. Type A fixed positioning pins 5 and Type B fixed positioning pins 15 are installed in the two pin holes of base plate 4. One short threaded end of the stud 9 is screwed into… Inside the threaded hole at the center of the base plate 4, the center hole of the pressure plate 8 is installed onto the stud 9 from one end of the long thread. The nut 7 is screwed onto one end of the long thread of the stud 9. Four small bearings 11 are installed into the four grooves of the support block 13. Small cylindrical pins 12 are installed into the holes of the four grooves of the support block 13 and the inner holes of the four small bearings 11 to connect them. Cylindrical pins 6 are installed from the bottom plane of the horizontal plate of the base 1 and connected to the cut hole on the lower end face of the support block 13 to position the support block 13 above the base 1. Large screws 14 are inserted from the small hole on the bottom plane of the horizontal plate of the base 1 and connected to the internal thread of the support block 13 to fix the support block 13 above the base 1.

[0038] The method of using the support and clamping device is as follows: Before processing the workpiece, first remove the nut 7 and the pressure plate 8 from the stud 9. The workpiece passes through the stud 9 and is placed on the four small bearings 11 of the support block 13 to facilitate the rotation of the workpiece. Install the pressure plate 8 and the nut 7 onto the stud 9 respectively. The workpiece is rotated to find the positions of the two positioning pins, A-type fixed positioning pin 5 and B-type fixed positioning pin 15. The A-type fixed positioning pin 15 is a diamond-shaped pin, and the position of the workpiece can be finely adjusted so that the workpiece can be smoothly fixed in the corresponding position. After the workpiece is fixed in the corresponding position, tighten the nut to make the pressure plate 8 move axially, thereby clamping the workpiece. After the workpiece is processed, loosen the nut 7 and remove the pressure plate 8. The workpiece can be removed from the device after slightly shaking up and down along the X-axis a few times.

[0039] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the protection scope of the present invention.

Claims

1. A support and clamping device, characterized in that, include: Base (1), positioning block (2), large bearing (3), base plate (4), nut (7), pressure plate (8), stud (9), small bearing (11), support block (13); The base (1) includes a base plate and a vertical plate. The vertical plate is fixed vertically on the top of the base plate. The outer ring of the large bearing (3) is supported in the round hole of the vertical plate. The positioning block (2) is supported in the inner ring of the large bearing (3). The base plate (4) is fixedly connected to the right end face of the positioning block (2). The two are coaxially arranged. A right positioning pin is provided on the right end face of the base plate (4) for positioning and installing the left end of the thin-walled cylindrical part; The base plate (4) has a threaded hole in the center, and the left end of the stud (9) is screwed into the threaded hole in the center of the base plate (4); the pressure plate (8) is disc-shaped, and its center hole is fitted on the right end of the stud (9); the nut (7) is screwed on the external thread on the right end of the stud (9) and is used to press the pressure plate (8) onto the end face of the thin-walled cylindrical part. Two support blocks (13) are fixed side by side on the top of the base plate, below the stud (9); the top of each support block (13) is set as an arc shape, with two grooves symmetrically arranged on it, and four small bearings (11) are respectively set in the grooves on the top of the two support blocks (13) to support the bottom of the thin-walled cylindrical part.

2. The supporting and clamping device according to claim 1, characterized in that, The right end face of the base plate (4) and the positioning block (2) is positioned by two cylindrical pins, and the right end face of the base plate (4) and the positioning block (2) are fixedly connected by screws.

3. The supporting and clamping device according to claim 1, characterized in that, The base plate (4) is a circular thin plate. A stepped through hole is designed in the center of the base plate (4). One hole is a light hole that connects to the right end of the positioning block (2), and the other is a threaded hole that connects to the stud (9).

4. The supporting and clamping device according to claim 1, characterized in that, The large bearing (3) is a deep groove ball bearing.

5. The supporting and clamping device according to claim 1, characterized in that, The small bearings (11) are deep groove ball bearings, and the four small bearings (11) are installed on the corresponding positions of the support block (13) by small cylindrical pins (12).

6. The supporting and clamping device according to claim 1, characterized in that, During processing, thin-walled cylindrical parts are clamped between the base plate and the pressure plate.

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