A type of assembly fixture for bushing parts

Abstract

The utility model relates to the technical field of shaft sleeve parts assembly, specifically to a shaft sleeve parts assembly tool, including: an assembly tool, the assembly tool including a press-in tool and a positioning tool; wherein the positioning tool includes a mounting base plate, an outer cylinder is fixedly mounted on the top of the mounting base plate, a sliding hole coaxially arranged therewith is opened on the top of the outer cylinder, and a first positioning shaft is slidably arranged inside the sliding hole, a reset structure for ejecting the first positioning shaft is arranged at the bottom, a limit plate integrally arranged therewith is arranged on the outer side of the bottom end of the first positioning shaft, and a second positioning shaft integrally arranged therewith and coaxially arranged therewith is arranged on the top of the first positioning shaft, and the diameter of the first positioning shaft is larger than the diameter of the second positioning shaft. The utility model has a simple structure, no complex mechanical parts, and is easy to manufacture, repair and replace. At the same time, during the assembly process, no precise positioning process is required, and the assembly process is simple and quick.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeve parts assembly, in particular to a shaft sleeve parts assembly tool. Background Art

[0002] Bushing parts are generally composed of coaxial rotating bodies, which can be understood as parts with a cylindrical appearance.

[0003] In the prior art, Figure 1 As shown, the sleeve parts are sleeved on the small diameter shaft of the double-step shaft (the large diameter shaft of the double-step shaft is fixed to the hydraulic end of the hydraulic press), and then the mounting hole on the workpiece is aligned with the double-step shaft (i.e., coaxial setting), and then the sleeve parts are pressed into the mounting hole through the double-step shaft. During this process, precise alignment is required before installation. During the alignment process, it is necessary to check whether it is aligned, which makes the assembly process cumbersome. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a shaft sleeve parts assembly tool.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A shaft sleeve parts assembly tool, comprising:

[0007] Assembly tooling, the assembly tooling comprising a press-in tooling and a positioning tooling;

[0008] Wherein, the positioning fixture comprises a mounting base plate, an outer cylinder is fixedly mounted on the top of the mounting base plate, a sliding hole is provided on the top of the outer cylinder coaxially arranged therewith, and a first positioning shaft is slidably arranged inside the sliding hole, a reset structure for ejecting the first positioning shaft is provided at the bottom, a limit plate integrally formed with the first positioning shaft is provided on the outer side of the bottom end of the first positioning shaft, and a second positioning shaft integrally formed with the first positioning shaft and coaxially arranged therewith is provided on the top end of the first positioning shaft, and the diameter of the first positioning shaft is greater than the diameter of the second positioning shaft;

[0009] Wherein, the positioning tool comprises a pressing block, the pressing block is in the shape of a round shell as a whole, and a fixing structure is arranged on the outer side of the pressing block.

[0010] As a further solution of the utility model: the reset structure includes a first cylindrical block, a second cylindrical block and a reset spring with two ends respectively sleeved on the first cylindrical block and the second cylindrical block, one end of the first cylindrical block is fixed on the mounting base and coaxially arranged with the first positioning axis, and one end of the second cylindrical block is fixed on the bottom end of the first positioning axis and coaxially arranged with the first positioning axis.

[0011] As a further solution of the utility model: the fixing structure includes a plurality of fixing bolts, the outer side of the pressure block is provided with a plurality of threaded holes distributed in an equidistant annular pattern around its central axis, and the outer sides of the fixing bolts are installed in the threaded holes through threads.

[0012] As a further solution of the present invention: chamfers are provided at the top edge of the first positioning shaft and the top edge of the second positioning shaft.

[0013] As a further solution of the utility model: a plurality of supporting structures are arranged at the bottom of the mounting base plate, wherein the supporting structure comprises a threaded rod and an internal threaded sleeve installed on the outside of the threaded rod through threads, and one end of the threaded rod is fixed to the mounting base plate.

[0014] As a further solution of the utility model: a contact block is fixed to the top end of the internal threaded sleeve, and the contact block is made of hard silicone material.

[0015] As a further solution of the utility model: a hexagonal screw head which is an integral structure and coaxially arranged therewith is arranged on the outer side of the internal thread sleeve.

[0016] After adopting the above structure, the utility model has the following advantages compared with the prior art:

[0017] The entire assembly tooling has a simple structure, without complex mechanical parts, and is easy to manufacture, repair and replace. At the same time, during the assembly process, no precise positioning process is required, and the assembly process is simple and fast;

[0018] When assembling the first workpiece, the first positioning shaft is inserted into the mounting hole, and the internal thread sleeve is twisted. The internal thread sleeve moves up and down along the thread until it contacts the workpiece, making the workpiece more stable when being assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of the prior art.

[0020] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the positioning tooling of the utility model.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the press-in tooling of the utility model.

[0023] Figure 5 This is an initial schematic diagram of the assembly process of the utility model.

[0024] Figure 6 It is a schematic diagram of the assembly process of the utility model.

[0025] In the figure: 1. Installation base plate; 2. Positioning tool; 3. Press-in tool; 4. Threaded rod; 5. Internal threaded sleeve; 6. Hexagonal screw head; 7. Contact block; 8. Outer cylinder; 9. First cylindrical block; 10. Return spring; 11. Second cylindrical block; 12. Limit plate; 13. First positioning shaft; 14. Second positioning shaft; 15. Press block; 16. Fixing bolt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 6 In the embodiment of the utility model, a shaft sleeve parts assembly tool comprises:

[0028] Assembly tooling, the assembly tooling includes a press-in tooling 3 and a positioning tooling 2;

[0029] Among them, the positioning tool 2 includes a mounting base plate 1, a plurality of positioning holes are opened on the plate surface of the mounting plate, the mounting plate is installed on the workbench of the hydraulic press by hexagonal bolts, an outer cylinder 8 is fixedly installed on the top of the mounting base plate 1, a sliding hole coaxially arranged therewith is opened on the top of the outer cylinder 8, and a first positioning shaft 13 is slidably arranged inside the sliding hole, a reset structure for ejecting the first positioning shaft 13 is arranged at the bottom, a limiting plate 12 with an integral structure with the first positioning shaft 13 is arranged on the outer side of the bottom end of the first positioning shaft 13, the first limiting plate 12 is arranged to prevent the first positioning shaft 13 from being fixed out of the outer cylinder 8 by the reset structure, and a second positioning shaft 14 with an integral structure and coaxially arranged therewith is arranged at the top of the first positioning shaft 13, and the diameter of the first positioning shaft 13 is larger than the diameter of the second positioning shaft 14;

[0030] The positioning tool 2 includes a pressing block 15, which is in the shape of a round shell as a whole, and a fixing structure is arranged on the outer side of the pressing block 15. The pressing block 15 is sleeved on the hydraulic end of the hydraulic press and fixed on the hydraulic end of the hydraulic press by a hexagonal bolt.

[0031] In the utility model, the mounting hole of the workpiece is sleeved on the first positioning shaft 13, and the first positioning shaft 13 and the mounting hole are intermittently matched. After the sleeve is set, the sleeve-like parts are sleeved on the second positioning shaft 14, and the second positioning shaft 14 and the sleeve-like parts are intermittently matched. After the sleeve is set, the hydraulic press is started, and the hydraulic press presses the sleeve-like parts into the mounting hole of the workpiece through the pressing block 15. At this time, the first positioning shaft 13 and the second positioning shaft 14 move downward accordingly until the sleeve-like parts are completely pressed in, the pressing block 15 is reset, and the first positioning shaft 13 is ejected by the reset structure. Since the sleeve-like parts and the mounting hole are interference fit, that is, the two are fixed, the first positioning shaft 13 lifts the sleeve-like parts, and the shaft parts take the workpiece away from the first positioning shaft 13. During the assembly process, there is no need to perform a precise positioning process, and the assembly process is simple and quick.

[0032] Specifically, in combination with Figure 3 The reset structure includes a first cylindrical block 9, a second cylindrical block 11, and a reset spring 10 with two ends respectively sleeved on the first cylindrical block 9 and the second cylindrical block 11. It can be seen that the reset spring 10 can be retracted in the vertical direction. One end of the first cylindrical block 9 is fixed on the mounting base plate 1 and is coaxially arranged with the first positioning shaft 13. One end of the second cylindrical block 11 is fixed on the bottom end of the first positioning shaft 13 and is coaxially arranged with the first positioning shaft 13.

[0033] In the utility model, the hydraulic press presses the sleeve-like parts into the mounting hole of the workpiece through the pressing block 15. At this time, the first positioning shaft 13 and the second positioning shaft 14 move downward, and the return spring 10 is compressed until the sleeve-like parts are completely pressed in, the pressing block 15 is reset, and the return spring 10 is reset.

[0034] Specifically, in combination with Figure 4 The fixing structure includes a plurality of fixing bolts 16. The outer side of the pressing block 15 is provided with a plurality of threaded holes equidistantly distributed in an annular pattern around its central axis. The outer sides of the fixing bolts 16 are installed in the threaded holes by threads.

[0035] In the present invention, the pressing block 15 is sleeved on the hydraulic end of the hydraulic press, and each fixing bolt 16 is twisted by a wrench to make the fixing bolt 16 contact with the hydraulic end until it cannot be twisted.

[0036] Specifically, the top edge of the first positioning shaft 13 and the top edge of the second positioning shaft 14 are both chamfered;

[0037] In the utility model, the chamfer is provided for the convenience of insertion.

[0038] Specifically, a plurality of supporting structures are provided at the bottom of the mounting base plate 1, wherein the supporting structure includes a threaded rod 4 and an internal threaded sleeve 5 threadedly mounted on the outside of the threaded rod 4, and one end of the threaded rod 4 is fixed on the mounting base plate 1;

[0039] In the present invention, when assembling the first workpiece, the first positioning shaft 13 is inserted into the mounting hole, and the internal thread sleeve 5 is twisted, and the internal thread sleeve 5 moves up and down along the threaded groove until it contacts the workpiece, so that the workpiece is more stable when being assembled.

[0040] Specifically, a contact block 7 is fixed to the top of the internal threaded sleeve 5, and the contact block 7 is made of hard silicone material;

[0041] In the present invention, the hard silicone material is used to prevent the generation of indentations.

[0042] Specifically, the outer side of the internal thread sleeve 5 is provided with a hexagonal screw head 6 which is integrally structured and coaxially arranged therewith;

[0043] In the present invention, the hexagonal screw head 6 is provided to facilitate twisting with the aid of a wrench.

[0044] Working principle: The mounting hole of the workpiece is sleeved on the first positioning shaft 13, and the first positioning shaft 13 and the mounting hole are intermittently matched. After the sleeve is set, the sleeve parts are sleeved on the second positioning shaft 14, and the second positioning shaft 14 and the sleeve parts are intermittently matched. After the sleeve is set, start the hydraulic press, and the hydraulic press presses the sleeve parts into the mounting hole of the workpiece through the pressure block 15. At this time, the first positioning shaft 13 and the second positioning shaft 14 move downward accordingly, and the reset spring 10 is compressed until the sleeve parts are completely pressed in, the pressure block 15 resets, the reset spring 10 recovers, and the first positioning shaft 13 is ejected by the reset structure. Since the sleeve parts and the mounting hole are interference fit, that is, the two are fixed, the first positioning shaft 13 lifts the sleeve parts, and the shaft parts take the workpiece away from the first positioning shaft 13. During the assembly process, there is no need for precise positioning, and the assembly process is simple and fast.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A shaft sleeve parts assembly tool, characterized in that: include: An assembly tool, the assembly tool comprising a pressing tool (3) and a positioning tool (2); The positioning tool (2) comprises a mounting base plate (1), an outer cylinder (8) is fixedly mounted on the top of the mounting base plate (1), a sliding hole coaxially arranged therewith is opened on the top of the outer cylinder (8), and a first positioning shaft (13) is slidably arranged inside the sliding hole, a reset structure for ejecting the first positioning shaft (13) is arranged at the bottom, a limiting plate (12) integrally formed with the first positioning shaft (13) is arranged on the outer side of the bottom end of the first positioning shaft (13), and a second positioning shaft (14) integrally formed with the first positioning shaft (13) and coaxially arranged therewith is arranged at the top end of the first positioning shaft (13), and the diameter of the first positioning shaft (13) is greater than the diameter of the second positioning shaft (14); Wherein, the positioning tool (2) comprises a pressing block (15), the pressing block (15) is in the shape of a round shell as a whole, and a fixing structure is arranged on the outer side of the pressing block (15).

2. The assembly tool for sleeve parts according to claim 1, characterized in that: The reset structure comprises a first cylindrical block (9), a second cylindrical block (11) and a reset spring (10) with two ends respectively sleeved on the first cylindrical block (9) and the second cylindrical block (11); one end of the first cylindrical block (9) is fixed on the mounting base plate (1) and is coaxially arranged with the first positioning shaft (13); one end of the second cylindrical block (11) is fixed on the bottom end of the first positioning shaft (13) and is coaxially arranged with the first positioning shaft (13).

3. The assembly tool for sleeve parts according to claim 1, characterized in that: The fixing structure comprises a plurality of fixing bolts (16), the outer side of the pressing block (15) is provided with a plurality of threaded holes which are equidistantly distributed in an annular pattern around its central axis, and the outer sides of the fixing bolts (16) are installed in the threaded holes via threads.

4. The assembly tool for sleeve parts according to claim 3, characterized in that: Chamfers are provided at the top edge of the first positioning shaft (13) and the top edge of the second positioning shaft (14).

5. The assembly tool for sleeve parts according to claim 1, characterized in that: A plurality of supporting structures are arranged at the bottom of the mounting base plate (1), wherein the supporting structure comprises a threaded rod (4) and an internal threaded sleeve (5) threadedly mounted on the outside of the threaded rod (4), and one end of the threaded rod (4) is fixed on the mounting base plate (1).

6. The assembly tool for sleeve parts according to claim 5, characterized in that: A contact block (7) is fixed to the top end of the internal thread sleeve (5), and the contact block (7) is made of hard silicone.

7. The assembly tool for sleeve parts according to claim 5, characterized in that: The outer side of the internal thread sleeve (5) is provided with a hexagonal screw head (6) which is integrally structured and coaxially arranged therewith.

Images