Press fitting clamp for guaranteeing mounting direction of joint part bushing

Abstract

The invention discloses a press fitting clamp for guaranteeing the mounting direction of a bushing of a joint part, which comprises a bottom plate, an upper plate is arranged above the bottom plate, the joint part is arranged on the bottom plate, the axis of a hole site of the bushing to be pressed on the joint part is in the vertical direction, and a positioning square bushing is fixed on the upper plate. An inner hole of the positioning square bushing corresponds to a hole position of a bushing to be pressed on a joint part in position and is the same as the hole position of the bushing to be pressed on the joint part in shape, the pressing rod penetrates through the inner hole of the positioning square bushing, the bushing to be assembled is arranged on the lower portion of the pressing rod, and when the pressing rod moves downwards, the bushing to be assembled can be pressed on the joint part. According to the press-fitting clamp, through a double-lining guiding mode, the positioning of the press-fitting linings in the X direction and the Y direction is guaranteed, the position requirement of the Z-axis rotating direction is also guaranteed, and the product is convenient to install and operate.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne suspension launch, and in particular relates to a signal switching mechanism. Background Art

[0002] The installation of bushings generally requires the use of press-fitting fixtures for positioning, and press-fitting is achieved through a press machine. Traditional press-fitting fixtures are generally positioned by a positioning plate through a non-bushing press-fitting hole with a round pin to ensure the installation accuracy of the bushing in the X and Y directions. When the joint parts are connected to the upper-level products, the important connectors to ensure the horizontal or vertical accuracy are often required to ensure the installation accuracy of the joint parts through press-fitting bushings. Press-fitting bushings is a mature technology, but this type of joint parts sometimes need to be pressed with some special-shaped bushings to ensure installation requirements. In addition to the X and Y directions, the rotation direction of the Z axis also needs to be positioned so that the bushing meets the technical requirements for connection with the upper-level product. This type of bushing is widely used in the automotive, aerospace and other industries. Special-shaped bushings will have problems with difficult to control horizontal or vertical accuracy when press-fitting. Summary of the invention

[0003] Purpose of the Invention

[0004] In order to solve the problem that the horizontal or vertical precision of a special-shaped bushing is difficult to control during press-fitting, the present invention provides a press-fitting fixture for ensuring the installation direction of the bushing of a joint part.

[0005] Inventing technical solutions

[0006] A press-fitting fixture for ensuring the installation direction of a bushing of a joint part comprises a base plate, an upper plate is arranged above the base plate, the joint part is arranged on the base plate and the axis of the bushing hole to be press-fitted on the joint part is along the vertical direction, a positioning square bushing is fixed on the upper plate, the inner hole of the positioning square bushing corresponds to the position and has the same shape as the bushing hole to be press-fitted on the joint part, a press rod passes through the inner hole of the positioning square bushing, the bushing to be assembled is arranged at the lower part of the press rod, and the bushing to be assembled can be press-fitted on the joint part when the press rod moves downward.

[0007] Preferably, the bottom plate and the upper plate are connected by a connecting plate, and both the bottom plate and the upper plate are arranged horizontally.

[0008] Preferably, holes are provided at positions corresponding to the holes of the bushings to be pressed into the bottom plate and the joint parts.

[0009] Preferably, a positioning bushing is fixed in the hole on the bottom plate.

[0010] Preferably, both ends of the joint part have holes for bushings to be press-fitted.

[0011] Preferably, it also includes a positioning pin, which passes through the inner hole of the positioning square bushing corresponding to the hole of the bushing to be pressed at one end of the joint part and the hole of the bushing to be pressed, and then extends into the inner hole of the corresponding positioning bushing; when the bushing to be pressed at the other end of the joint part is pressed, the positioning pin is removed.

[0012] Preferably, a boss is provided on the bottom plate where the positioning bushing is provided, and the positioning bushing is provided in a hole on the boss to position the bushing.

[0013] Preferably, a boss is provided at a position corresponding to the top surface of the bottom plate and the groove in the middle of the joint part, and the boss is clearance-matched with the groove in the middle of the joint part.

[0014] Preferably, the positioning square bushing is interference fit with the upper plate.

[0015] Preferably, the positioning pin is clearance-matched with the inner hole of the positioning square bushing and the positioning bushing.

[0016] The advantages of the present invention are as follows: the press-fitting fixture ensures the positioning of the press-fitted bushing in the X and Y directions and the position requirement in the Z-axis rotation direction by means of double bushing guidance. The product is easy to install and operate. The positioning parts all use bushings, which is convenient for later maintenance and the fixture can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural diagram of a press-fitting fixture for ensuring the installation direction of a bushing of a joint part.

[0018] Figure 2 yes Figure 1 Top view of the .

[0019] Figure 3 yes Figure 1 Right view of .

[0020] Figure 4 It is a stereoscopic diagram of a press-fitting fixture for ensuring the installation direction of a bushing of a joint part according to the present invention.

[0021] Figure 5 This is a diagram of the positioning pin structure.

[0022] Figure 6 It is a diagram of the compression rod structure.

[0023] Figure 7 yes Figure 6 Bottom view of .

[0024] In the figure, 1-base plate, 2-connecting plate, 3-upper plate, 4-positioning square bushing, 5-pressure rod, 6-positioning pin, 7-positioning bushing, 8-connector part, 9-bushing to be assembled, 10-screw, 11-cylindrical pin one, 12-screw, 13-cylindrical pin two. DETAILED DESCRIPTION

[0025] The present invention is achieved through the following technical solutions.

[0026] A press-fitting fixture for ensuring the installation direction of the bushing of a joint part comprises a bottom plate 1, a connecting plate 2, an upper plate 3, a positioning square bushing 4, a pressure rod 5, a positioning pin 6, a positioning bushing 7, a screw 10, a cylindrical pin 11, a screw 12, and a cylindrical pin 2 13. The two ends of the upper plate 3 are connected to the upper part of the two connecting plates 2 by screws 10 and a cylindrical pin 11, and the bottom plate 1 is connected to the bottom surface of the two connecting plates 2 by screws 12 and a cylindrical pin 2 13. The two positioning square bushings 4 are interference-fitted in the installation holes on the upper plate 3, the positioning bushing 7 is interference-fitted with the bottom plate 1, and the top surface of the bottom plate 1 has a plurality of bosses, the middle boss is clearance-fitted with the groove in the middle of the joint part 8, and the bosses at both ends keep the two ends of the joint part 8 horizontal, so that the axes of the two bushing installation holes on the joint part 8 are along the vertical direction, and the positioning bushings 7 are press-fitted on the bosses at both ends to keep consistent with the hole size of the joint part 8. The positioning pin 6 passes through the inner hole of the positioning square bushing 4 and the bushing mounting hole at one end of the joint part 8 in sequence, and then is inserted into the inner hole of the positioning bushing 7. The pressure rod 5 passes through the inner hole of the positioning square bushing 4 and the inner hole of the bushing 9 to be assembled to complete the positioning. The press machine applies force to the pressure rod 5 to complete the assembly of the bushing 9 to be installed and the joint part 8 to ensure the accuracy of the installation direction.

[0027] The positioning square bushing 7 is square all around and has an interference fit with the upper plate 3. The shape of the through hole in the middle is consistent with the shape and position of the bushing mounting hole on the joint part.

[0028] The positioning pin 6 is a stepped shaft, the upper outer shape of which is adapted to the through hole profile of the positioning square bushing, and has a clearance fit with the positioning square bushing 4 on the upper plate 3, and a clearance fit with the positioning bushing 7 on the bottom plate at the lower part.

[0029] The pressure rod 5 is a stepped shaft, the upper part of which is matched with the through hole of the positioning square bushing 4 on the upper plate 3, and the lower part of which is matched with the inner hole of the bushing 9 to be assembled on the joint part 8, so as to ensure the installation direction and installation accuracy of the bushing 9 to be assembled and the joint part 8. The upper part of the pressure rod 5 can limit the axial position of the bushing 9 to be assembled.

[0030] When pressing the bushing 9 to be assembled on the other side, two pressing rods 5 are required to be used in cooperation, the positioning pin 6 is removed, one pressing rod 5 is inserted into the inner hole of the bushing installed on the joint part 8, and the other pressing rod 5 is used to press the bushing 9 to be assembled.

[0031] After use, the positioning square bushing 4 and the positioning bushing 7 of the press-fitting fixture need to be protected to prevent rust during repeated use.

[0032] The edges and corners of the fixture need to be blunted to improve safety.

[0033] Example

[0034] Prepare one joint part 8 and two bushings 9 to be assembled. Place the joint part 8 flat on the bottom plate 1, and match the clearance with its boss. Align the bushing hole of the joint part 8 to be pressed with the positioning bushing 7 of the bottom plate 1. Use the positioning pin 6 to penetrate the positioning square bushing 4 of the upper plate 3, and insert it into the positioning bushing 7 of the bottom plate 1 through the bushing hole of the joint part 8 to be pressed, so as to complete the positioning of the joint part 8 by the fixture. The pressure rod 5 passes through the positioning square bushing 4 and the bushing 9 to be assembled, so as to complete the positioning of the bushing 9 to be assembled by the fixture. The press machine applies force to the pressure rod 5 to complete the assembly of the bushing to be installed with the joint part, so as to ensure the requirements of its installation direction. The pressing method on the other side is similar. One pressure rod 5 is required to replace the positioning pin 6 to complete the positioning of the joint part 8, and the other pressure rod 5 completes the assembly of the bushing 9 to be assembled with the joint part 8, so as to ensure the requirements of its installation direction accuracy.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians familiar with the technical field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be included in the protection scope of the present invention. The technology, shape, and structure parts not described in detail in the present invention are all well-known technologies.

Claims

1. A press-fitting fixture for ensuring the installation direction of a bushing of a joint part, characterized in that: The invention comprises a bottom plate (1), an upper plate (3) is arranged above the bottom plate (1), a joint part (8) is arranged on the bottom plate (1) and the axis of the bushing hole to be pressed on the joint part (8) is along the vertical direction, a positioning square bushing (4) is fixed on the upper plate (3), the inner hole of the positioning square bushing (4) corresponds to the position and has the same shape as the bushing hole to be pressed on the joint part (8), a pressing rod (5) passes through the inner hole of the positioning square bushing (4), a bushing to be assembled (9) is arranged at the lower part of the pressing rod (5), and when the pressing rod (5) moves downward, the bushing to be assembled (9) can be pressed onto the joint part (8).

2. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part according to claim 1, characterized in that: The bottom plate (1) and the upper plate (3) are connected via a connecting plate (2), and the bottom plate (1) and the upper plate (3) are both arranged horizontally.

3. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part according to claim 2, characterized in that: Holes are provided at positions corresponding to the holes of the bushings to be pressed on the bottom plate (1) and the joint part (8).

4. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part as claimed in claim 3, characterized in that: A positioning bushing (7) is fixed in the hole on the bottom plate (1).

5. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part as claimed in claim 4, characterized in that: Both ends of the joint part (8) are provided with bushing holes to be pressed.

6. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part as claimed in claim 5, characterized in that: It also includes a positioning pin (6), which sequentially passes through the inner hole of the positioning square bushing (4) corresponding to the bushing hole to be pressed at one end of the joint part (8), and then extends into the inner hole of the corresponding positioning bushing (7); when the bushing (9) to be pressed at the other end of the joint part (8) is pressed, the positioning pin (6) is removed.

7. A press-fitting fixture for ensuring the installation direction of the bushing of a joint part as claimed in claim 5, characterized in that: A boss is provided at a location on the bottom plate (1) where the positioning bushing (7) is provided. The positioning bushing (7) is provided in a hole on the boss to position the bushing (7).

8. A press-fitting fixture for ensuring the installation direction of a bushing of a joint part as claimed in claim 1, characterized in that: A boss is provided at a position corresponding to the top surface of the bottom plate (1) and the middle groove of the joint part (8), and the boss is clearance-matched with the middle groove of the joint part (8).

9. A press-fitting fixture for ensuring the installation direction of a bushing of a joint part as claimed in claim 1, characterized in that: The positioning square bushing (4) is interference fit with the upper plate (3).

10. A press-fitting fixture for ensuring the installation direction of a bushing of a joint part according to claim 6, characterized in that: The positioning pin (6) is clearance-matched with the inner hole of the positioning square bushing (4) and the positioning bushing (7).

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