Box type part bearing bush press fitting angle quick positioning device

Abstract

This utility model discloses a rapid positioning device for the pressing angle of bearing bushes in box-type parts. It includes a support assembly, a guide assembly and a stamping assembly above the support assembly. The stamping assembly is disposed on the lower surface of the guide plate and includes a stepped pressure head. The pressure head includes a cylindrical first rod diameter and a cylindrical second rod diameter. A keyway is provided in the middle of the second rod diameter, and four first circular holes are provided on the end face of the first rod diameter. A spring and an axially movable spring sleeve are sleeved on the outside of the second rod diameter. This utility model's rapid positioning device for the pressing angle of bearing bushes in box-type parts can quickly and efficiently position the workpiece axially and circumferentially, meeting the angle and depth requirements of bearing bush pressing. Furthermore, it allows for rapid switching between different products by replacing the limiting post, support seat, pressure head, and elastic sleeve, thereby reducing costs and labor intensity, enabling better product quality control, improving product quality stability, and increasing production efficiency.

Description

Technical Field

[0001] This utility model relates to an engine tooling, or more precisely, a device for quickly positioning the bearing bush of a box-type part at the pressing angle. Background Technology

[0002] The primary function of press-fitted bearing bushes in an engine housing is to provide stable support and lubrication for the crankshaft or other rotating components. An oil film forms between the bearing bush and the crankshaft, reducing friction from direct metal-to-metal contact and significantly decreasing wear. Furthermore, the bearing bushes are typically made of wear-resistant alloys, making them more resistant to high temperatures and impacts than directly machined housings. The bearing bushes are press-fitted into the bearing housing bore with an interference fit, ensuring a tight seal and preventing displacement or rotation during operation.

[0003] Currently, the pressing of bearing bushes in engine housings is done manually by marking lines and pressing them in place. This method is time-consuming and difficult to operate. Therefore, it is necessary to develop a device for quickly positioning the pressing angle of bearing bushes in housing-type parts. Utility Model Content

[0004] Therefore, it is necessary to provide a device for quickly positioning the bearing bush pressing angle of box-type parts to address the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A rapid positioning device for the pressing angle of bearing bushes in box-type parts is characterized in that the device includes a support assembly, and a guide assembly and a stamping assembly are provided above the support assembly.

[0007] The support assembly includes a plate-shaped square base plate, with a detachable conical workpiece support seat in the center of the base plate. The edges of the square base plate are provided with several detachable limiting posts. A pair of square pads are provided on the base plate, and each square pad has a detachable strip-shaped pressure plate at its top. The ends of the strip-shaped pressure plates are provided with adjustable pressure blocks.

[0008] The guide assembly includes a plate-shaped upper top plate and a lower bottom plate. A guide plate is provided between the upper top plate and the lower bottom plate. The upper top plate has through-holes at its four corners and a through-hole in its center. The lower bottom plate has through-holes at its four corners and a detachable cylindrical guide rod between the upper and lower countersunk holes.

[0009] The guide plate has through guide holes at each of its four corners, through which the guide rod passes. A stepped guide sleeve is provided inside each guide hole, and the guide sleeve cooperates with the guide rod. The guide plate has four connecting holes in its center, and an annular pull sleeve is provided on the upper surface of each connecting hole.

[0010] The stamping assembly is disposed on the lower surface of the guide plate. The stamping assembly includes a stepped pressure head, which includes a cylindrical first rod diameter and a cylindrical second rod diameter. The second rod diameter has a keyway in the middle. The end face of the first rod diameter has four first circular holes. A spring and an axially movable spring sleeve are sleeved on the outside of the second rod diameter.

[0011] In a preferred embodiment of the present invention, the base plate is provided with a plurality of base plate circular holes, and nylon washers are provided in the base plate circular holes.

[0012] In a preferred embodiment of this utility model, the upper and lower end faces of the guide rod are provided with guide rod threaded holes, and the guide rod threaded holes are connected to the upper step countersunk hole and the lower step countersunk hole by connecting screws.

[0013] In a preferred embodiment of this utility model, the guide hole is provided with a plurality of fixing screw holes in the circumferential direction.

[0014] In a preferred embodiment of this utility model, the pull sleeve has a stepped hole in the center, and four through connecting screw holes are provided on the end face of the pull sleeve. A connecting rod is provided inside the pull sleeve, and the connecting rod is connected and fixed to the pull sleeve by an external hexagonal nut. The upper part of the connecting rod passes through the through hole and is connected to an external cylinder.

[0015] In a preferred embodiment of this utility model, the side wall of the spring sleeve is provided with an opening and a through hole. The through hole and the keyway are connected and fixed by a cylindrical pin. The outer side wall of the sleeve is provided with two vertical grooves. A transverse through threaded hole is provided in the middle of the vertical groove. A detachable adjusting block is provided in the vertical groove. The adjusting block is provided with a through adjusting block connecting hole and an adjusting threaded hole. The adjusting block connecting hole and the threaded hole cooperate with each other. A positioning bead screw is provided in the adjusting threaded hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention provides a rapid positioning device for the pressing angle of bearing bushes in box-type parts. This device can quickly and efficiently position the workpiece in the axial and circumferential directions, meeting the angle and depth requirements of bearing bush pressing. Furthermore, it can quickly switch between different products by replacing the limiting post, support seat, pressure head, and elastic pressure sleeve, thereby reducing costs and labor intensity, enabling better product quality control, improving product quality stability, and increasing production efficiency. Attached Figure Description

[0018] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the quick positioning device for pressing the bearing bush angle of box-type parts according to the present invention.

[0020] Figure 2 for Figure 1 An exploded view of the three-dimensional structure of the guide component;

[0021] Figure 3 for Figure 1 A three-dimensional structural exploded view of the supporting components;

[0022] Figure 4 for Figure 1 An exploded three-dimensional structural diagram of the stamping components in the process;

[0023] Figure 5 This is a schematic diagram of the device for quickly positioning the bearing bush pressing angle of the box-type parts according to this utility model during operation; the bearing bush is not pressed in.

[0024] Figure 6 This is a schematic diagram of the device for quickly positioning the bearing bush pressing angle of the box-type parts according to this utility model during operation, with the bearing bush pressed down to the bottom support position;

[0025] Figure 7 This is a schematic diagram of the device for quick positioning of the bearing bush pressing angle of the box-type parts according to this utility model during operation. The bearing bush has been pressed in and the stamping part has returned to its original position.

[0026] The markings in the diagram are explained as follows: 1. Support assembly; 11. Square base plate; 111. Base plate round hole; 112. Nylon washer; 12. Workpiece support seat; 13. Limiting post; 14. Square pad; 15. Strip pressure plate; 16. Pressure block; 2. Guide assembly; 21. Upper top plate; 211. Upper stepped countersunk hole; 212. Through hole; 22. Lower base plate; 221. Lower stepped countersunk hole; 23. Guide rod; 231. Guide rod threaded hole; 232. Connecting screw; 24. Guide plate; 241. Guide round hole; 242. Fixing screw hole; 25. Guide sleeve 26. Connecting round hole; 27. Pull sleeve; 271. Stepped hole; 272. Connecting screw hole; 28. Connecting rod; 29. ​​External hexagonal nut; 3. Stamping assembly; 31. Press head; 311. First rod diameter; 312. Second rod diameter; 313. Keyway; 314. Round hole; 32. Spring sleeve; 321. Opening; 322. Through hole; 323. Vertical groove; 324. Horizontal through threaded hole; 33. Spring; 34. Adjusting block; 341. Adjusting block connecting hole; 342. Adjusting threaded hole; 35. Cylindrical pin; 36. Positioning bead screw. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figures 1 to 4 As shown, the quick positioning device for the bearing press-fit angle of the box-type part includes a support assembly 1, above which are a guide assembly 2 and a stamping assembly 3.

[0029] The support assembly 1 includes a plate-shaped square base plate 11. A detachable conical workpiece support seat 12 is provided in the middle of the base plate 11. Several detachable limiting posts 13 are provided on the edge of the square base plate 11. A pair of square pads 14 are provided on the base plate 11. Each square pad 14 has a detachable strip-shaped pressure plate 15 at its top and an adjustable pressure block 16 at its end.

[0030] It should be noted that the base plate 11 has several base plate circular holes 111, and nylon washers 112 are installed in the base plate circular holes 111.

[0031] The guide assembly 2 includes a plate-shaped upper top plate 21 and a lower bottom plate 22. A guide plate 24 is provided between the upper top plate 21 and the lower bottom plate 22. The upper top plate 21 has through upper stepped countersunk holes 211 at each of its four corners and a through hole 212 in the middle. The lower bottom plate 22 has through lower stepped countersunk holes 221 at each of its four corners. A detachable cylindrical guide rod 23 is provided between the upper stepped countersunk holes 211 and the lower stepped countersunk holes 221.

[0032] The guide plate 24 has a through guide hole 241 at each of its four corners. The guide rod 23 passes through the guide hole 241. A stepped guide sleeve 25 is provided inside the guide hole 241. The guide sleeve 25 cooperates with the guide rod 23. The guide plate 24 has four connecting holes 26 in the middle. A ring-shaped pull sleeve 27 is provided on the upper surface of the connecting hole 26.

[0033] It should be noted that the guide rod 23 has threaded holes 231 on both its upper and lower end faces. These threaded holes 231 are connected to the upper countersunk hole 211 and the lower countersunk hole 221 via connecting screws 232. The guide hole 241 has several fixing screw holes 242 around its circumference.

[0034] The pull sleeve 27 has a stepped hole 271 in the center and four through connecting screw holes 272 on the end face of the pull sleeve 27. The pull sleeve 27 has a connecting rod 28 inside. The connecting rod 28 is connected and fixed to the pull sleeve 27 by an external hexagonal nut 29. The upper part of the connecting rod 28 passes through the through hole 212 and is connected to an external cylinder.

[0035] The stamping assembly 3 is disposed on the lower surface of the guide plate 24. The stamping assembly 3 includes a stepped pressure head 31. The pressure head 31 includes a cylindrical first rod diameter 311 and a cylindrical second rod diameter 312. The second rod diameter 312 has a keyway 313 in the middle. The end face of the first rod diameter 311 has four first circular holes 314. The second rod diameter 312 is sleeved with a spring 33 and an axially movable spring sleeve 32.

[0036] It should be noted that the side wall of the spring sleeve 32 is provided with an opening 321 and a through hole 322. The through hole 322 is connected and fixed to the keyway 313 by a cylindrical pin 35. The outer side wall of the sleeve 32 is provided with two vertical grooves 323. The middle of the vertical groove 323 is provided with a transverse through threaded hole 324. The vertical groove 323 is provided with a detachable adjusting block 34. The adjusting block 34 is provided with a through adjusting block connecting hole 341 and an adjusting threaded hole 342. The adjusting block connecting hole 341 and the threaded hole 324 cooperate with each other. The adjusting threaded hole 342 is provided with a positioning bead screw 36.

[0037] In addition, depending on the different pressing depth requirements, the spring sleeve 32 can be moved up and down along the keyway 313.

[0038] The following describes the working principle of the quick positioning device for pressing the bearing bush of the box-type parts, including the following steps:

[0039] Step S1, as follows Figure 5As shown, the engine housing part 4 is slowly lowered along the pre-positioned position of the limiting post 13 until it contacts the base plate 11, thereby achieving circumferential positioning of the part. Then, the pressure blocks 16 on the two side strip pressure plates 15 are adjusted to press them onto the housing 4 and fix them tightly, thereby achieving axial positioning of the part.

[0040] Step S2: Slowly insert the bearing 5 onto the second rod diameter 312 of the pressure head 31 until the bearing 5 reaches the position of the positioning bead screw 36;

[0041] Step S3, as follows Figure 6 As shown, the machine tool activation button causes the connecting rod 28 to be subjected to cylinder pressure. The connecting rod 28, along with the stamping part 2, moves downward along the guide rod 23, pressing down to the support seat 12 and then returning. Figure 7 As shown, this achieves one-time press fitting;

[0042] Step S4: When the product model is changed, change the position of the limit post 13 and the corresponding support seat 12, and then install the pressure head 31 and spring sleeve 32 corresponding to the bearing of the product to be pressed.

[0043] This utility model's device for rapid positioning of the bearing bush pressing angle of box-type parts can quickly and efficiently position the workpiece in the axial and circumferential directions, meeting the angle and depth requirements of bearing bush pressing. Furthermore, it can quickly switch between different products by replacing the limiting post, support seat, pressure head, and elastic pressure sleeve, thereby reducing costs and labor intensity, enabling better product quality control, improving product quality stability, and increasing production efficiency.

[0044] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A box type part bearing bush press fitting angle quick positioning device, characterized in that, The aforementioned box-type part bearing bush press-fit angle quick positioning device includes a support assembly (1), and a guide assembly (2) and a stamping assembly (3) are provided above the support assembly (1). The support assembly (1) includes a plate-shaped square base plate (11), a detachable conical workpiece support seat (12) is provided in the middle of the base plate (11), a number of detachable limiting posts (13) are provided on the edge of the square base plate (11), a pair of square pads (14) are provided on the base plate (11), a detachable strip pressure plate (15) is provided on the top of each square pad (14), and an adjustable pressure block (16) is provided at the end of the strip pressure plate (15). The guide assembly (2) includes a plate-shaped upper top plate (21) and a lower bottom plate (22). A guide plate (24) is provided between the upper top plate (21) and the lower bottom plate (22). The upper top plate (21) has through upper step countersunk holes (211) at its four corners. The upper top plate (21) has through through holes (212) in the middle. The lower bottom plate (22) has through lower step countersunk holes (221) at its four corners. A detachable cylindrical guide rod (23) is provided between the upper step countersunk holes (211) and the lower step countersunk holes (221). The guide plate (24) has through guide holes (241) at each of its four corners. The guide rod (23) passes through the guide holes (241). A stepped guide sleeve (25) is provided inside the guide holes (241). The guide sleeve (25) cooperates with the guide rod (23). The guide plate (24) has four connecting holes (26) in the middle. A ring-shaped pull sleeve (27) is provided on the upper surface of the connecting holes (26). The stamping assembly (3) is disposed on the lower surface of the guide plate (24). The stamping assembly (3) includes a stepped pressure head (31). The pressure head (31) includes a cylindrical first rod diameter (311) and a cylindrical second rod diameter (312). The second rod diameter (312) has a keyway (313) in the middle. The first rod diameter (311) has four first circular holes (314) on its end face. The second rod diameter (312) is sleeved with a spring (33) and an axially movable spring sleeve (32).

2. The box part gasket pressing angle quick positioning device according to claim 1, characterized in that, The base plate (11) is provided with a plurality of base plate circular holes (111), and a nylon washer (112) is provided in the base plate circular holes (111).

3. The box part gasket pressing angle quick positioning device according to claim 1, characterized in that, The guide rod (23) is provided with a guide rod threaded hole (231) on both the upper and lower end faces. The guide rod threaded hole (231) is connected to the upper step countersunk hole (211) and the lower step countersunk hole (221) by a connecting screw (232).

4. The box part gasket pressing angle quick positioning device according to claim 1, characterized in that, The guide hole (241) is provided with a plurality of fixing screw holes (242) in the circumferential direction.

5. The box part gasket pressing angle quick positioning device according to claim 1, characterized in that, The pull sleeve (27) has a stepped hole (271) in the center and four through connecting screw holes (272) on the end face of the pull sleeve (27). The pull sleeve (27) has a connecting rod (28) inside. The connecting rod (28) is connected and fixed to the pull sleeve (27) by an external hexagonal nut (29). The upper part of the connecting rod (28) passes through the through hole (212) and is connected to an external cylinder.

6. The box-shaped part gasket pressing angle quick positioning device according to claim 1, characterized in that, The spring sleeve (32) has an opening (321) and a through hole (322) on its side wall. The through hole (322) is connected and fixed to the keyway (313) by a cylindrical pin (35). The outer side wall of the sleeve (32) has two vertical grooves (323). The middle of the vertical groove (323) has a transverse through threaded hole (324). The vertical groove (323) has a detachable adjusting block (34). The adjusting block (34) has a through adjusting block connecting hole (341) and an adjusting threaded hole (342). The adjusting block connecting hole (341) and the threaded hole (324) are matched. The adjusting threaded hole (342) has a positioning bead screw (36).

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