Positioning and press-fitting device for internal and external splines

Abstract

The utility model relates to the technical field of internal and external spline positioning and press-fitting, in particular to an internal and external spline positioning and press-fitting device which comprises a machine base, a press-fitting assembly is fixedly connected to the upper end of the machine base, a positioning assembly is rotatably connected to the lower end of the machine base, and the press-fitting assembly comprises a first driving part which is fixedly connected to the upper end of the machine base. The positioning assembly comprises a base, the base is rotationally connected to the lower end of the machine base, an installation base is fixedly connected to the upper end of the base, an inner spline is clamped in the installation base, the outer spline is located above the inner spline, and the outer spline and the inner spline are in press fit; the device has a good positioning effect on the internal and external splines, can align and press-fit the internal and external splines in any direction, does not need manual press-fit, and has a good press-fit effect and high press-fit efficiency.

Description

Technical Field

[0001] The utility model relates to the field of internal and external spline positioning and pressing, in particular to an internal and external spline positioning and pressing device. Background Art

[0002] Most of the intermediate shaft teeth in current reducers are press-fit with internal and external splines. When press-fitting, the tooth grooves of the internal spline need to be aligned with the tooth thickness of the external spline, the internal spline is fixed in position, and the external spline is press-fitted to the internal spline. The internal spline and the external spline are connected to transmit large torque.

[0003] Existing internal and external spline positioning and pressing devices, such as the internal and external spline spindle rotation clamping mechanism proposed in patent application number "CN202321267657.5", can better clamp and disassemble various special-shaped spline shafts through support parts, rotating parts, fasteners and other structures. It is very convenient to use and can control the position more accurately when rotation is required.

[0004] Initially, the spline shaft could only be positioned manually, and the two parts needed to be manually aligned before press-fitting. The press-fitting effect was poor, the press-fitting efficiency was low, and the internal and external splines could not be aligned and press-fitted in any orientation. Moreover, the clamping mechanism mentioned in the prior art did not have a press-fitting function, and the clamping and positioning effect of the splines was poor. Therefore, an internal and external spline positioning and press-fitting device was proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an internal and external spline positioning and pressing device to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A positioning and press-fitting device for internal and external splines, comprising a machine base, a press-fitting assembly fixedly connected to the upper end of the machine base, a positioning assembly rotatably connected to the lower end of the machine base, the press-fitting assembly comprising a first driving member fixedly connected to the upper end of the machine base, a clamping assembly fixedly connected to the output end of the first driving member, and an external spline clamped inside the clamping assembly;

[0008] The positioning assembly includes a base, which is rotatably connected to the lower end of the machine base. The upper end of the base is fixedly connected to a mounting seat, and an internal spline is clamped in the mounting seat. The external spline is located above the internal spline, and the external spline is press-fitted with the internal spline.

[0009] Preferably, an output end of the driving member is fixedly connected to a connecting cylinder, an adjusting column is slidably connected inside the connecting cylinder, a clamping assembly is fixedly connected to the lower end of the adjusting column, and the clamping assembly is located in the machine base.

[0010] Preferably, the connecting tube is shaped as a "T", the upper end of the connecting tube is fixedly connected to a guide rod, the upper end of the machine base is fixedly connected to a fixing seat, and the guide rod passes through the fixing seat.

[0011] Preferably, the clamping assembly includes a chuck, which is fixed to the lower end of the adjusting column, and a fixed column is fixed to the middle of the chuck. Multiple groups of claws are slidably connected to the chuck, and the multiple groups of claws are arranged in a circular array. The fixed column is located in the middle of the multiple groups of claws, and the external spline is inserted into the fixed column. The multiple groups of claws are squeezed into the side wall of the external spline.

[0012] Preferably, the lower end of the machine base is fixedly connected to a driving member 2, the output end of the driving member 2 is fixedly connected to a driving gear, the driving gear is rotatably connected to the machine base, the side wall of the base is fixedly connected to a rotating gear, and the rotating gear is meshed with the driving gear for transmission.

[0013] Preferably, a heating element is fixedly connected to the lower end of the machine base, a heating tube is fixedly connected to one end of the heating element, an isolation cover is provided on the top cover of the heating tube, and the isolation cover is located inside the base.

[0014] Beneficial effects of the utility model:

[0015] The utility model fixes the internal spline in the mounting seat and drives the base to rotate, so that the mounting seat drives the internal spline to rotate until the orientation of the internal spline corresponds to that of the external spline. The driving part drives the clamping assembly to drive the external spline to descend, and the external spline and the internal spline are press-fitted. This device can position the internal and external splines without manual tooth positioning of the splines, and can align and press-fit the internal and external splines in any orientation without manual press-fitting. It has good press-fitting effect, good clamping and positioning effect, and high press-fitting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the press-fit assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the positioning component structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the positioning component of the utility model;

[0022] The reference numerals in the figures are as follows:

[0023] 1. Machine base; 2. Driving part 1; 3. Fixed seat; 4. Guide rod; 5. Connecting tube; 6. Chuck; 7. Claw; 8. Fixed column; 9. External spline; 11. Internal spline; 12. Driving part 2; 13. Driving gear; 14. Base; 15. Rotating gear; 16. Mounting seat; 17. Heating element; 18. Heating tube; 19. Isolation cover; 20. Adjusting column. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] An internal and external spline positioning press-fit device, such as Figure 1-Figure 5 As shown, it includes a machine base 1, a press-fit assembly is fixedly connected to the upper end of the machine base 1, and a positioning assembly is rotatably connected to the lower end of the machine base 1. The press-fit assembly includes a driving member 2, which is fixed to the upper end of the machine base 1, and a clamping assembly is fixedly connected to the output end of the driving member 2. The clamping assembly has an external spline 9 clamped inside.

[0026] The positioning assembly includes a base 14, which is rotatably connected to the lower end of the machine base 1. The upper end of the base 14 is fixed with a mounting seat 16, and the mounting seat 16 is clamped with an internal spline 11. The external spline 9 is located above the internal spline 11, and the external spline 9 is press-fitted with the internal spline 11.

[0027] By fixing the inner spline 11 in the mounting seat 16, the mounting seat 16 can clamp and fix mounting seats 16 of different sizes, and the driving base 14 rotates, so that the mounting seat 16 drives the inner spline 11 to rotate, and the orientation of the inner spline 11 can be adjusted until the orientation of the inner spline 11 corresponds to the orientation of the outer spline 9, which is convenient for pressing the inner and outer splines 9. The driving part 12 drives the clamping assembly to drive the outer spline 9 to descend, and press the outer spline 9 and the inner spline 11. This device can position the inner and outer splines 9, and can align and press the inner and outer splines 9 in any orientation without manual pressing. The pressing effect is good, the pressing efficiency is high, and the clamping and positioning effect is good.

[0028] The output end of the driving member 2 is fixedly connected to a connecting tube 5 , an adjusting column 20 is slidably connected inside the connecting tube 5 , a clamping assembly is fixedly connected to the lower end of the adjusting column 20 , and the clamping assembly is located inside the machine base 1 .

[0029] like Figure 1 and Figure 2As shown, the driving member 2 is an existing device, which can be a driving member such as a hydraulic cylinder. The output end of the driving member 2 drives the connecting tube 5 to descend, and the adjustment column 20 and the connecting tube 5 can be adjusted to change the length formed between the adjustment column 20 and the connecting tube 5, so that the clamping assembly can drive the external splines 9 of different lengths to be pressed into the internal splines 11.

[0030] The connecting tube 5 is configured to be T-shaped, with a guide rod 4 fixedly connected to the upper end of the connecting tube 5 , a fixing seat 3 fixedly connected to the upper end of the machine base 1 , and the guide rod 4 passing through the fixing seat 3 .

[0031] like Figure 1 and Figure 2 As shown, when the driving member 2 drives the connecting cylinder 5 to descend, the connecting cylinder 5 drives the guide rod 4 to descend, and the guide rod 4 slides in the fixing seat 3, limiting the moving path of the connecting cylinder 5 and ensuring that the two parts are pressed vertically.

[0032] The clamping assembly includes a chuck 6, which is fixed to the lower end of the adjusting column 20. A fixed column 8 is fixed to the middle of the chuck 6. Multiple groups of claws 7 are slidably connected to the chuck 6. The multiple groups of claws 7 are arranged in a circular array. The fixed column 8 is located in the middle of the multiple groups of claws 7. The external spline 9 is inserted into the fixed column 8. The multiple groups of claws 7 are squeezed and fitted with the side wall of the external spline 9.

[0033] like Figure 3 As shown, the external spline 9 is inserted into the fixed column 8, and the chuck 6 drives the multiple sets of jaws 7 to move radially, so that the multiple sets of jaws 7 squeeze and clamp the side wall of the fixed column 8 at the same time, making it easy to disassemble and assemble the external spline 9.

[0034] The lower end of the base 1 is fixedly connected to a second driving member 12, and the output end of the second driving member 12 is fixedly connected to a driving gear 13. The driving gear 13 is rotatably connected to the base 1, and the side wall of the base 14 is fixedly connected to a rotating gear 15. The rotating gear 15 is meshed with the driving gear 13 for transmission.

[0035] like Figure 4 As shown, the second driving member 12 is an existing device, which can be a servo motor or other equipment. The second driving member 12 drives the driving gear 13 to rotate, the driving gear 13 drives the rotating gear 15 to rotate, and the rotating gear 15 drives the base 14 to rotate to adjust the orientation of the internal spline 11.

[0036] A heating element 17 is fixedly connected to the lower end of the machine base 1 , a heating tube 18 is fixedly connected to one end of the heating element 17 , an isolation cover 19 is provided on the top of the heating tube 18 , and the isolation cover 19 is located inside the base 14 .

[0037] like Figure 1 and Figure 5As shown, the heating element 17 heats the heating tube 18, and the heating tube 18 heats the inside of the internal spline 11 installed on the base 14 through the isolation cover 19, so that the inner hole of the internal spline 11 becomes larger, and then the corresponding external spline 9 is pressed into an assembly to facilitate the press-fitting of the internal and external splines 9.

[0038] The working principle of the internal and external spline positioning and pressing device provided by the utility model is as follows:

[0039] By fixing the internal spline 11 in the mounting seat 16, the mounting seat 16 can clamp and fix mounting seats 16 of different sizes, and the driving base 14 rotates, so that the mounting seat 16 drives the internal spline 11 to rotate, and the orientation of the internal spline 11 can be adjusted until the orientation of the internal spline 11 corresponds to the orientation of the external spline 9, which is convenient for pressing the internal and external splines 9. The driving part 12 drives the clamping assembly to drive the external spline 9 to descend, and press the external spline 9 and the internal spline 11. This device can position the internal and external splines 9, and can align and press the internal and external splines 9 in any orientation without manual pressing. The pressing effect is good and the pressing efficiency is high.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An internal and external spline positioning and pressing device, comprising a base (1), characterized in that: The upper end of the machine base (1) is fixedly connected with a press-fit assembly, the lower end of the machine base (1) is rotatably connected with a positioning assembly, the press-fit assembly comprises a driving member (2), the driving member (2) is fixedly connected to the upper end of the machine base (1), the output end of the driving member (2) is fixedly connected with a clamping assembly, and the clamping assembly has an external spline (9) clamped inside; The positioning assembly comprises a base (14), the base (14) is rotatably connected to the lower end of the machine base (1), the upper end of the base (14) is fixedly connected to a mounting seat (16), an internal spline (11) is clamped inside the mounting seat (16), the external spline (9) is located above the internal spline (11), and the external spline (9) and the internal spline (11) are press-fitted.

2. The internal and external spline positioning and pressing device according to claim 1, characterized in that: The output end of the driving member 1 (2) is fixedly connected with a connecting tube (5), the interior of the connecting tube (5) is slidably connected with an adjusting column (20), a clamping assembly is fixedly connected to the lower end of the adjusting column (20), and the clamping assembly is located in the machine base (1).

3. The internal and external spline positioning and pressing device according to claim 2, characterized in that: The connecting tube (5) is configured to be in a "T" shape, the upper end of the connecting tube (5) is fixedly connected to a guide rod (4), the upper end of the machine base (1) is fixedly connected to a fixing seat (3), and the guide rod (4) passes through the fixing seat (3).

4. The internal and external spline positioning and pressing device according to claim 2, characterized in that: The clamping assembly comprises a chuck (6), the chuck (6) is fixedly connected to the lower end of the adjusting column (20), a fixing column (8) is fixedly connected to the middle of the chuck (6), a plurality of groups of claws (7) are slidably connected to the chuck (6), the plurality of groups of claws (7) are arranged in a circular array, the fixing column (8) is located in the middle of the plurality of groups of claws (7), an external spline (9) is plugged into the fixing column (8), and the plurality of groups of claws (7) are all squeezed and matched with the side wall of the external spline (9).

5. The internal and external spline positioning and pressing device according to claim 1, characterized in that: The lower end of the machine base (1) is fixedly connected to a second driving member (12); the output end of the second driving member (12) is fixedly connected to a driving gear (13); the driving gear (13) is rotatably connected to the machine base (1); a rotating gear (15) is fixedly connected to the side wall of the base (14); the rotating gear (15) is meshed with the driving gear (13) for transmission.

6. The internal and external spline positioning and pressing device according to claim 1, characterized in that: A heating element (17) is fixedly connected to the lower end of the machine base (1), a heating tube (18) is fixedly connected to one end of the heating element (17), an isolation cover (19) is provided on the top of the heating tube (18), and the isolation cover (19) is located inside the base (14).

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