Press fitting tool and press fitting equipment

Abstract

The utility model discloses a press fitting tool and press fitting equipment. The press fitting tool comprises a supporting seat plate, a supporting cushion assembly is arranged on the supporting seat plate, a supporting shaft is arranged on the supporting seat plate, a rotating seat plate rotating along the vertical axis is arranged on the supporting shaft through a rotating assembly, and a first lining positioning assembly, a second lining positioning assembly and a knuckle bearing positioning assembly which move up and down are arranged on the rotating seat plate. The rotating paths of the first lining positioning assembly, the second lining positioning assembly and the knuckle bearing positioning assembly are all located above the supporting cushion assembly. The press-fitting equipment comprises a machine body and a pressing head capable of moving up and down, and further comprises the press-fitting tool, the supporting seat plate is fixed to the machine body, and the pressing head is located above the supporting cushion assembly. The bushing press-fitting tool has the beneficial effects that on-site actual operation verifies that the bushing press-fitting tool achieves a very good effect, the bushing assembly efficiency of products is improved, the qualified rate of the products is guaranteed, the purposes of saving time and labor and being safe are achieved, and the on-site small-batch production requirement is met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical press-fitting, and particularly relates to a press-fitting tool and a press-fitting device. BACKGROUND

[0002] The rotating lever is a component of a unit brake device, which is independently suspended and designed in a triangular shape. One hole is connected with a main beam, one hole is connected with a unit brake cylinder, and the other hole is connected with a push rod. A bushing or a joint bearing is usually installed at the connection position. Figure 1 As shown in the structure diagram of the rotating lever 01, three holes are provided with a joint bearing 02, a first bushing 03 (28X38X20mm) and a second bushing 04 (34X42X20mm).

[0003] The bushing reduces the wear of a transmission component in a round hole. In addition, the bushing and the round hole are in interference fit to avoid the bushing from falling off. The previous installation method usually uses a flat pad to press on the end face of the bushing, and then the bushing is pressed into the round hole by a press. This method is time-consuming and labor-intensive, and reduces the assembly efficiency of the bushing. In addition, the bushing is easy to move under external force, which causes the bushing and the round hole to be out of axis, the centering is poor, and the bushing is easy to deform or even damaged, which reduces the assembly quality of the bushing and affects the service life of the product.

[0004] The technical requirements for the press-fitting of the joint bearing 02 and the rotating lever 01 are as follows: the interference fit amount is 0.04mm-0.1mm, and the inner ball sleeve of the joint bearing can rotate flexibly after press-fitting. In the press-fitting process, misalignment occurs, and uneven press-fitting force causes local deformation of the joint bearing, which causes the inner ball sleeve to be stuck and unable to rotate. In addition, due to the manufacturing errors of the joint bearing and the rotating lever, it is difficult to ensure the quality of the press-fitting. The existing press-fitting equipment is used to press-fit the bushing. Because the product itself weighs 5.8Kg, two people are usually used to press-fit the bushing at one time. One person holds the workpiece, and the other person places the bushing and starts the pneumatic pressure equipment to complete the press-fitting. This process needs to carry and turn the rotating lever body back and forth, which is labor-intensive, low in efficiency, and has safety risks. CONTENT OF THE UTILITY MODEL

[0005] The application aims to successfully assemble the bushing and the mounting hole, reduce the labor intensity, improve the production efficiency, ensure the quality of the product, meet the small-batch production demand, and solve the problems of low efficiency and poor quality of the existing rotating lever press-fitting bushing or joint bearing.

[0006] The purpose of the application is achieved by the following technical solutions:

[0007] A pressing tool includes a support seat plate, a support pad assembly is provided on the support seat plate, a support shaft is provided on the support shaft, a rotating seat plate that rotates along a vertical axis is provided through a rotating assembly, and a first bushing positioning assembly, a second bushing positioning assembly and a joint bearing positioning assembly that can move up and down are provided on the rotating seat plate, and the rotation paths of the first bushing positioning assembly, the second bushing positioning assembly and the joint bearing positioning assembly are all located above the support pad assembly.

[0008] Furthermore, the support pad assembly includes a support column and a movable pad block. The support seat plate is provided with a support column, and the movable pad block is provided on the support column.

[0009] Furthermore, the support seat plate is provided with a placement hole, the lower part of the support column is fixed in the placement hole and the lower end extends out of the placement hole, the support seat plate supports the side edge of the support column, the support column is provided with a placement groove with an upward opening, the movable pad is located in the placement groove and there is a gap with the bottom of the groove, the support column supports the side edge of the movable pad, and the center of the support column and the movable pad is provided with a through hole along the axis.

[0010] Furthermore, the rotating assembly includes a bearing pad, a first compression spring, a first bearing, a support shaft, a tray and a second bearing. The support seat plate is provided with a support shaft, and the support shaft is sleeved with a first bearing, a tray and a second bearing. The upper end of the support shaft is provided with a bearing pad, a first compression spring is provided between the first bearing and the lower end of the tray, a second bearing is provided between the upper end of the tray and the bearing pad, and the tray is connected to the rotating seat plate.

[0011] Furthermore, the support shaft is provided with an installation step, the first bearing is arranged on the installation step, the tray is provided with a bearing groove with an upward opening, the second bearing and the bearing pad are both located in the bearing groove, the rotating seat plate is provided with a tray hole, the tray is fixed in the tray hole, and the support edge of the tray supports the rotating seat plate.

[0012] Furthermore, at least one of the first bushing positioning assembly, the second bushing positioning assembly and the joint bearing positioning assembly includes a positioning rod, a mounting seat plate and a second compression spring, a mounting seat plate is provided on the rotating seat plate, a positioning rod that slides up and down is provided on the mounting seat plate, and a second compression spring that supports the positioning rod upward is provided on the mounting seat plate.

[0013] Furthermore, the upper ends of the positioning rods of the first bushing positioning assembly, the second bushing positioning assembly and the spherical bearing positioning assembly include a small diameter portion and a large diameter portion, and the small diameter portion is located above the large diameter portion.

[0014] Further, the rotating seat plate is provided with a seat plate hole, the mounting seat plate is fixed in the seat plate hole, the rotating seat plate holds the side edge of the mounting seat plate, the mounting seat plate is provided with an upward opening guide groove, the positioning rod is slidably arranged in the guide groove, the lower end of the positioning rod is provided with a guide rod, the second compression spring is sleeved on the guide rod, and the rotating seat plate is provided with a protective sleeve which is sleeved on the outer side of the mounting seat plate.

[0015] The press equipment comprises a machine body and an up-and-down movable press head, and further comprises the press tooling, the support seat plate is fixed on the machine body, and the press head is located above the support pad assembly.

[0016] Further, the press head is a detachable press head.

[0017] The application has the following advantages: through actual operation verification, the bushing press tooling achieves good effects, improves product bushing assembly efficiency, guarantees product qualification rate, achieves the purposes of saving time, saving labor and safety, and meets the requirements of small batch production on site.

[0018] The foregoing main scheme and each further selected scheme of the application can be freely combined to form multiple schemes, which are all the schemes that can be adopted and claimed by the application; and the application can also be freely combined between (each non-conflicting selection) and other selections. Those skilled in the art can understand that there are multiple combinations according to the prior art and common knowledge after understanding the scheme, which are all the technical schemes claimed by the application, and are not listed exhaustively. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a rotating lever structure schematic view.

[0020] Figure 2 is a structure schematic view of the application.

[0021] In the figure: 01-rotating lever, 02-joint bearing, 03-first bushing, 04-second bushing; 1-support seat plate, 2-support column, 3-movable pad block, 4-protection sleeve, 5-rotating seat plate, 6-first bushing positioning rod, 7-first bolt, 8-bearing pad block, 9-first compression spring, 10-second bushing positioning rod, 11-second bolt, 12-mounting seat plate, 13-second compression spring, 14-third bolt, 15-first bearing, 16-support shaft, 17-fourth bolt, 18-tray, 19-second bearing. DETAILED DESCRIPTION

[0022] The application will be further described below in combination with specific embodiments and the drawings.

[0023] Embodiment 1

[0024] Reference Figure 1 andFigure 2 As shown in the drawings, a press-fitting tool comprises a support base plate 1, a support pad assembly, a support shaft 16, a rotating assembly, a rotating base plate 5, a first bushing positioning assembly, a second bushing positioning assembly and a knuckle bearing positioning assembly.

[0025] The support base plate 1 is a flat plate structure, which is used as the basis for supporting and installing the tool at the lowermost position. The support shaft 16 is vertically arranged on the support base plate 1, and the rotating base plate 5 is arranged on the support shaft 16 through the rotating assembly and rotates along the vertical axis. The support shaft 16 lifts the rotating base plate 5, and the rotating assembly is used to horizontally rotate the rotating base plate 5 to switch the positioning assemblies to the press-fitting position. Since the existing equipment can only realize single press-fitting, the rotating base plate 5 needs to be rotated after the press-fitting is completed to press-fit the next part, which reduces the labor intensity of manual transportation of workpieces in the previous press-fitting process and improves the production efficiency.

[0026] The rotating base plate 5 is provided with the first bushing positioning assembly, the second bushing positioning assembly and the knuckle bearing positioning assembly which are movable up and down. The three positioning assemblies are used to position and arrange the rotating lever, and the three positioning assemblies are used to position and arrange the first bushing, the second bushing and the knuckle bearing, respectively.

[0027] The support base plate 1 is provided with the support pad assembly, and the rotating paths of the first bushing positioning assembly, the second bushing positioning assembly and the knuckle bearing positioning assembly are located above the support pad assembly. When the positioning assemblies are rotated above the support pad assembly, the support pad assembly supports the positioning assemblies, and the different press heads are pressed downward to press the bushings or knuckle bearings into the holes of the rotating lever.

[0028] The support pad assembly comprises a support column 2 and a movable pad block 3. The support column 2 is arranged on the support base plate 1 and supported by the support base plate 1. The movable pad block 3 is arranged on the support column 2 and supported by the support column 2. The movable pad block 3 supports the positioning assemblies above and is used to bear the axial load force transmitted by the press head during the pressing process.

[0029] The support base plate 1 is provided with a mounting hole. The lower part of the support column 2 is fixed in the mounting hole through interference fit, and the lower end of the support column 2 extends out of the mounting hole to realize the connection with the equipment body, so as to fix the support base plate 1 on the equipment body. The support base plate 1 lifts the side edge of the support column 2 and limits the downward movement of the support column 2.

[0030] The support column 2 is provided with a placement groove with an upward opening, and the movable pad 3 is located in the placement groove to avoid horizontal displacement of the movable pad 3, and there is a gap between the movable pad 3 and the bottom of the groove, so that the pad itself deforms without being tightened in the placement groove, facilitating subsequent taking and placing of the movable pad 3. The support column 2 supports the side edge of the movable pad 3 and limits the downward movement of the movable pad 3. The support column 2 and the movable pad 3 are provided with through holes along the central axis, which saves structural materials and facilitates exhaust of the contact surface.

[0031] The rotating assembly includes a bearing pad 8, a first compression spring 9, a first bearing 15, a support shaft 16, a tray 18 and a second bearing 19. The support seat plate 1 is provided with the support shaft 16, and the flange at the lower end of the support shaft 16 is fixed to the support seat plate 1 by the fourth bolt 17, and the central axis of the support shaft 16 is located at the center of gravity of the rotating lever. The support shaft 16 is sleeved with the first bearing 15, the tray 18 and the second bearing 19, the upper end of the support shaft 16 is provided with the bearing pad 8, the first bearing 15 and the lower end of the tray 18 are provided with the first compression spring 9, the upper end of the tray 18 and the bearing pad 8 are provided with the second bearing 19, and the tray 18 is connected with the rotating seat plate 5.

[0032] The first bearing 15 and the second bearing 19 are used to realize the rotation transition between the support shaft 16 and the tray 18, so that the tray 18 can rotate along the vertical axis relative to the support shaft 16, and drive the rotating seat plate 5 to rotate synchronously. The first compression spring 9 provides an upward elastic force to the tray 18, and when the pressing head is lowered for pressing, the rotating seat plate 5 and the tray 18 overcome the spring pressure to descend, and after the pressing head rises and resets, the rotating seat plate 5 and the tray 18 also rise and reset under the action of the spring.

[0033] The support shaft 16 is provided with a mounting step, the first bearing 15 is arranged on the mounting step, the tray 18 is provided with a bearing groove with an upward opening, the second bearing 19 and the bearing pad 8 are located in the bearing groove, the upper end of the support shaft 16 is connected with the first bolt 7, and the first bolt 7 fixes the bearing pad 8 to the support shaft 16. The second bearing 19 and the bearing pad 8 are built in the bearing groove of the tray 18, which can reduce the height of the rotating assembly and avoid interference with the placed rotating lever. The rotating seat plate 5 is provided with a tray hole, and the tray 18 is fixed in the tray hole in an interference fit. The tray 18 supports the rotating seat plate 5 to realize the supporting effect of the tray 18 on the rotating seat plate 5 and ensure that the two move upward or downward synchronously.

[0034] The first bushing positioning assembly, the second bushing positioning assembly and the joint bearing positioning assembly each include a positioning rod, a mounting seat plate 12 and a second compression spring 13. The positioning rod of the first bushing positioning assembly is a first bushing positioning rod 6, and the positioning rod of the second bushing positioning assembly is a second bushing positioning rod 10. The mounting seat plate 12 is provided on the rotating seat plate 5 and is supported by the rotating seat plate 5. The mounting seat plate 12 is provided with a positioning rod that slides up and down, and the positioning rod positions the rotating lever and the part to be pressed (the bushing or the joint bearing), so as to ensure that the part to be pressed (the bushing or the joint bearing) can be smoothly pressed into the hole of the rotating lever. The mounting seat plate 12 is provided with a second compression spring 13 that supports the positioning rod upward, so that when the pressing head is lowered for pressing, the part to be pressed and the positioning rod are lowered synchronously, and the part to be pressed enters the hole. After the rotating lever is removed from the equipment, the positioning rod also rises and resets under the action of the spring.

[0035] The upper end structures of the positioning rods of the first bushing positioning assembly, the second bushing positioning assembly and the joint bearing positioning assembly are similar (the sizes can be different), and each include a small-diameter part and a large-diameter part. The small-diameter part is located above the large-diameter part. The large-diameter part is opposite to the hole on the rotating lever, so as to position and arrange the rotating lever on the rotating seat plate. The small-diameter part is opposite to the inner hole of the bushing or the joint bearing, so as to position and arrange the part to be pressed. At this time, the outer ring of the bushing or the joint bearing is opposite to the hole on the rotating lever, so as to press the bushing or the joint bearing into the hole.

[0036] The rotating seat plate 5 is provided with a seat plate hole, and the mounting seat plate 12 is fixed in the seat plate hole in an interference fit. The rotating seat plate 5 holds up the side edge of the mounting seat plate 12, so as to support and limit the mounting seat plate 12. The mounting seat plate 12 is provided with a guide groove with an opening facing upward, and the positioning rod slides up and down in the guide groove, so as to slide up and down. The lower end of the positioning rod is integrally provided with a guide rod, the second compression spring 13 is sleeved on the guide rod, and the third screw rod 14 is connected with the guide rod after penetrating upward through the mounting seat plate 12, so as to avoid the positioning rod from coming out of the guide groove.

[0037] The rotating seat plate 5 is provided with a protective sleeve 4, and the protective sleeve 4 is fixed below the rotating seat plate 5 through the second bolt 11. The protective sleeve 4 is sleeved and attached to the outer side of the mounting seat plate 12, so as to protect the positioning assembly. Due to the influence of the weight of the workpiece, slight tilting may occur during the rotation of the rotating seat plate 5, which may cause the movable pad 3 to collide with the protective sleeve 4. Therefore, a gap of about 3.5 mm is provided between the movable pad 3 and the protective sleeve 4.

[0038] Example 2

[0039] A press equipment comprises a machine body and a press head moving up and down, and further comprises the press tool of the embodiment 1, the support seat plate 1 is fixed on the machine body, and the press head is located above the support pad assembly, and the press head is a detachable press head.

[0040] The press equipment uses an existing pneumatic press machine, cooperates with the special press head, and is installed above the positioning rod. The press equipment can drive the press head to move downward to provide a downward pressing force to the positioning rod. When different bushings are pressed, only the press head needs to be replaced, which is convenient and fast.

[0041] The working procedure of the present application is as follows: the rotary lever is placed according to the tool identification direction, the installation hole is ensured to be sunk into the large diameter of the positioning rod, an appropriate amount of lubricating grease is applied on the bearing and placed on the small diameter of the positioning rod, the matched press head is installed, and the pneumatic press machine equipment is started to complete the pressing. The rotary seat plate is rotated until the protective sleeve is approximately flush with the axis of the movable pad block, and the above steps are repeated to press the bushing.

[0042] The foregoing basic examples and each further selected example of the present application can be freely combined to form multiple embodiments, all of which are embodiments that can be used and claimed by the present application. In the present application scheme, each selected example can be arbitrarily combined with any basic example and selected example.

[0043] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A press-fitting tool, comprising a support base plate (1), characterized in that: The support seat plate (1) is provided with a support pad assembly, the support seat plate (1) is provided with a support shaft (16), the support shaft (16) is provided with a rotating seat plate (5) that rotates along a vertical axis through a rotating assembly, the rotating seat plate (5) is provided with a first bushing positioning assembly, a second bushing positioning assembly and a joint bearing positioning assembly that can move up and down, and the rotation paths of the first bushing positioning assembly, the second bushing positioning assembly and the joint bearing positioning assembly are all located above the support pad assembly.

2. The press-fitting tool according to claim 1, characterized in that: The support pad assembly comprises a support column (2) and a movable pad block (3); the support column (2) is provided on the support seat plate (1), and the movable pad block (3) is provided on the support column (2).

3. The press-fitting tool according to claim 2, characterized in that: The support seat plate (1) is provided with a placement hole, the lower part of the support column (2) is fixed in the placement hole and the lower end extends out of the placement hole, the support seat plate (1) lifts the side edge of the support column (2), the support column (2) is provided with a placement groove with an upward opening, the movable pad (3) is located in the placement groove and has a gap with the bottom of the groove, the support column (2) lifts the side edge of the movable pad (3), and the center of the support column (2) and the movable pad (3) is provided with a through hole along the axis.

4. The press-fitting tool according to claim 1, characterized in that: The rotating assembly comprises a bearing pad (8), a first compression spring (9), a first bearing (15), a support shaft (16), a tray (18) and a second bearing (19); a support shaft (16) is provided on the support seat plate (1); the first bearing (15), the tray (18) and the second bearing (19) are sleeved on the support shaft (16); a bearing pad (8) is provided at the upper end of the support shaft (16); a first compression spring (9) is provided between the first bearing (15) and the lower end of the tray (18); a second bearing (19) is provided between the upper end of the tray (18) and the bearing pad (8); and the tray (18) is connected to the rotating seat plate (5).

5. The press-fitting tool according to claim 4, characterized in that: The support shaft (16) is provided with an installation step, the first bearing (15) is arranged on the installation step, the tray (18) is provided with a bearing groove with an opening facing upward, the second bearing (19) and the bearing pad (8) are both located in the bearing groove, the rotating seat plate (5) is provided with a tray hole, the tray (18) is fixed in the tray hole, and the supporting edge of the tray (18) supports the rotating seat plate (5).

6. The press-fitting tool according to claim 1 or 4, characterized in that: At least one of the first bushing positioning assembly, the second bushing positioning assembly and the spherical bearing positioning assembly includes a positioning rod, a mounting seat plate (12) and a second compression spring (13); a mounting seat plate (12) is provided on the rotating seat plate (5); a positioning rod that slides up and down is provided on the mounting seat plate (12); and a second compression spring (13) that supports the positioning rod upward is provided on the mounting seat plate (12).

7. The press-fitting tool according to claim 6, characterized in that: The upper ends of the positioning rods of the first bushing positioning assembly, the second bushing positioning assembly and the spherical bearing positioning assembly include a small diameter portion and a large diameter portion, and the small diameter portion is located above the large diameter portion.

8. The press-fitting tool according to claim 6, characterized in that: The rotating seat plate (5) is provided with a seat plate hole, the mounting seat plate (12) is fixed in the seat plate hole, the rotating seat plate (5) lifts the side edge of the mounting seat plate (12), the mounting seat plate (12) is provided with a guide groove with an opening facing upward, the positioning rod slides up and down in the guide groove, the lower end of the positioning rod is provided with a guide rod, the second compression spring (13) is sleeved on the guide rod, the rotating seat plate (5) is provided with a protective sleeve (4), and the protective sleeve (4) is sleeved on the outer side of the mounting seat plate (12).

9. A press-fitting device comprising a body and a pressing head that moves up and down, characterized in that: It also includes the pressing tool as described in any one of claims 1 to 8, the support base plate (1) is fixed on the machine body, and the pressing head is located above the support pad assembly.

10. The press-fitting device according to claim 9, characterized in that: The pressure head is a detachable pressure head.

Images