CN217666825U - A kind of rotor pulling inner spline hole fixture - Google Patents

Abstract

The utility model provides a rotor pulling inner spline hole clamp, which relates to the technical field of clamps. The top surface of the broaching machine is provided with a guide sleeve above the base of the piston rod of the broaching machine. The outer surface of the guide sleeve is provided with a protective cylinder a, and the outer surface of the mandrel is provided with a protective cylinder b. In actual use, by setting Mandrel, Nut, Piston Rod Base of Broaching Machine, Guide Sleeve, Protection Cylinder a, Protection Cylinder B, Cylindrical Compression Spring A, Claw, Cylindrical Compression Spring B, Screw Plug, Air Pipe Joint, Air Pipe, Broach Positioning Seat, Rotor positioning seat, broaching table, processed rotor and internal spline hole broach are used to prevent iron filings from entering by adding protective cylinder, blowing air and adding seals in the rotor pulling internal spline hole fixture. Reasonable, stable and reliable work, reducing the cost of fixtures.

Description

A jig for pulling inner spline holes of a rotor

technical field

The utility model relates to the technical field of clamps, in particular to a clamp for spline holes inside a rotor pull.

Background technique

The rotor, cylinder block, ball joint and other parts of the hydraulic pump or hydraulic motor are designed as spline connections with the drive shaft, which can facilitate machining, assembly, maintenance and replacement, and the involute internal and external splines can be automatically centered. The weakening of the strength of the part matrix is the most widely used. The profile of the involute internal spline tooth is relatively complicated, and the vertical accuracy of the internal spline hole relative to the end face is very high. Usually, the forming internal spline broach is used in the vertical internal spline. The broaching machine is broached at one time, while the vertical internal broaching machine drops downwards to discharge iron filings when it is working. The existing broaching fixtures located at the lower part of the broaching machine are not well protected, and iron filings often enter between the sliding parts of the fixture during use. It leads to sticking, damage, unstable processing, and increased cost, which needs to be improved.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a rotor pull inner spline hole clamp.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a jig for pulling the spline hole in the rotor, including a mandrel, one end of the mandrel is rotatably connected with a nut, and the mandrel is positioned on the broaching machine piston rod base , the top surface of the mandrel is located above the base of the piston rod of the broaching machine, and a guide sleeve is provided, the outer surface of the guide sleeve is provided with a protective cylinder a, and the outer surface of the mandrel is provided with a protective cylinder b, so A claw is provided inside the guide sleeve, a cylindrical compression spring b is provided between the claw and the mandrel, a cylindrical compression spring a is provided between the guide sleeve and the mandrel, and the inside of the guide sleeve is located at a A screw plug is provided at the side position, the bottom end of the mandrel is fixed with a gas pipe joint, the inside of the gas pipe joint is provided with a gas pipe, a broach positioning seat is provided above the guide sleeve, and the broach positioning seat There is a broaching table on the outer surface of the broaching table, a rotor positioning seat is arranged above the broaching table, a processed rotor is provided on the top surface of the rotor positioning seat, and an inner spline hole is provided in the hole of the processed rotor Broach.

In order to prevent the nut from loosening, the utility model is improved that a flat washer a is arranged between the nut and the mandrel.

In order to fix the protection cylinder b, the utility model is improved as follows: a hexagon socket head cap screw a is rotationally connected between the mandrel and the protection cylinder b, and the connection between the protection cylinder b and the hex socket socket head cap screw a A flat washer b is provided, a hexagon socket cap screw b is rotationally connected between the broach positioning seat and the mandrel, and an O-ring is provided on the outer circular surface of the broach positioning seat.

In order to connect the mandrel with the base of the broaching machine piston rod, the utility model is improved as follows: the outer circle of the lower end of the mandrel is positioned in the hole of the broaching machine piston rod base, and the step surface is flattened with the upper end surface of the broaching machine piston rod base, and is flat. Washer a is flat against the lower end surface of the piston rod base of the broaching machine.

In order to make the claws run stably, the utility model is improved as follows: the mandrel is provided with evenly distributed horizontal holes and square grooves, and the claws are slidably connected with the horizontal holes and square grooves, and the outer circle of the upper end of the mandrel is connected with the guide The inner hole of the sleeve is matched, and the guide sleeve is provided with a ring groove for accommodating the radial retraction of the claws.

In order to discharge excess air, the utility model is improved in that an air vent is opened on the rotor positioning seat.

Compared with the prior art, the utility model has the advantages and positive effects that:

In the utility model, during actual use, by setting the mandrel, the nut, the piston rod base of the broaching machine, the guide sleeve, the protective cylinder a, the protective cylinder b, the cylindrical compression spring a, the claw, the cylindrical compression spring b, the screw plug , air pipe joint, air pipe, broach positioning seat, rotor positioning seat, broaching machine table, processed rotor and inner spline hole broach, use the inner spline hole jig on the rotor to increase the protective cylinder, blow air and increase the seal Three aspects of the parts are used to prevent the entry of iron filings, the structure is reasonable, the work is stable and reliable, and the cost of the fixture is reduced.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a jig for pulling the inner spline hole of the rotor proposed by the utility model;

Fig. 2 is a structural schematic diagram of the clamping claw in Fig. 1 in a rotor pulling inner spline hole fixture proposed by the utility model;

Fig. 3 is a schematic diagram of the unfolded structure of Fig. 1 in a rotor pull inner spline hole fixture proposed by the utility model;

Fig. 4 is a structural schematic diagram of the jaws in Fig. 2 in a jig for pulling the inner spline hole of the rotor proposed by the utility model.

illustration:

1. Mandrel; 2. Nut; 3. Flat washer a; 4. Broaching machine piston rod base; 5. Flat washer b; 6. Hexagon socket head screw a; 7. Guide sleeve; 8. Protective cylinder a; 9. Protection cylinder b; 10. Cylindrical compression spring a; 11. Claw; 12. Cylindrical compression spring b; 13. Screw plug; , O-ring; 18, broach positioning seat; 19, rotor positioning seat; 20, broaching machine table; 21, processed rotor; 22, inner spline hole broach.

Detailed ways

In order to understand more clearly the above purpose, features and advantages of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here. Therefore, the utility model is not limited to the specific details of the following disclosure EXAMPLE LIMITATIONS.

Embodiment 1, please refer to Figures 1-4, the utility model provides a technical solution: a rotor spline hole clamp, including a mandrel 1, one end of the mandrel 1 is rotatably connected to a nut 2, and the nut 2 is connected to the core A flat washer a3 is arranged between the shafts 1. The flat washer is usually a thin piece of various shapes, which is used to isolate, prevent loosening or disperse pressure. The outer circle of the lower end of the mandrel 1 is positioned in the hole 4 of the piston rod base of the broaching machine. surface and the upper surface of the broaching machine piston rod base 4, and the flat washer a3 is flat with the lower end surface of the broaching machine piston rod base 4, and the top surface of the mandrel 1 is located above the broaching machine piston rod base 4. The outer surface of the guide sleeve 7 is provided with a protective cylinder a8, the outer surface of the mandrel 1 is provided with a protective cylinder b9, the mandrel 1 and the protective cylinder b9 are rotatably connected with hexagon socket head cap screws a6, and the protective cylinder b9 A flat washer b5 is arranged between the hexagon socket cap screw a6.

Please refer to Figure 1-4, the inside of the guide sleeve 7 is provided with claws 11, the mandrel 1 is provided with evenly distributed horizontal holes and square grooves, and the claws 11 are slidably connected with the horizontal holes and square grooves, and the upper end of the mandrel 1 The outer circle is matched with the inner hole of the guide sleeve 7, and the guide sleeve 7 is provided with a ring groove for accommodating the radial retraction of the claw 11. A cylindrical compression spring b12 is arranged between the claw 11 and the mandrel 1, and the guide sleeve 7 and the mandrel 1 A cylindrical compression spring a10 is arranged between them, and the inside of the guide sleeve 7 is provided with a screw plug 13 at one side. 7 is provided with a broach positioning seat 18, and the broach positioning seat 18 and the mandrel 1 are rotationally connected with a hexagon socket cap screw b16, and the outer circular surface of the broach positioning seat 18 is also provided with an O-ring 17, O The ring 17 moves and seals along the inner hole of the broaching machine table 20, which can prevent iron filings from entering. The broaching machine table 20 is arranged on the outer surface of the broaching machine table 18, and the rotor positioning seat 19 is arranged on the top of the broaching machine table 20. Vent holes are provided on the positioning seat 19 , and the top surface of the rotor positioning seat 19 is provided with a processed rotor 21 , and an inner spline hole broach 22 is provided in the hole of the processed rotor 21 .

Working principle: by setting mandrel 1, nut 2, broaching machine piston rod base 4, guide sleeve 7, protective cylinder a8, protective cylinder b9, cylindrical compression spring a10, claw 11, cylindrical compression spring b12, screw plug 13 , air pipe joint 14, air pipe 15, broach positioning seat 18, rotor positioning seat 19, broaching machine table 20, processed rotor 21 and inner spline hole broach 22, firstly the broaching machine piston rod base 4 drives the mandrel 1 upward Move the return stroke to the upper limit (controlled by the travel switch), push the guide sleeve 7 to the position of the left side view in Figure 2 at the intersection of the inner hole of the broaching table 20 and the bottom surface, and the claw 11 retracts radially under the action of the cylindrical compression spring b12, and the clamp The outer end of claw 11 is moved into the ring groove of guide sleeve 7, and the inner end of claw 11 is also retracted into the horizontal hole of mandrel 1. At this time, compressed air is briefly introduced through air pipe 15, air pipe joint 14, and air hole of mandrel 1 (by electromagnetic gas). Valve, time relay control), blow off the iron filings in the middle hole of the mandrel 1, the handle of the inner spline hole broach 22 passes through the inner hole of the processed rotor 21, the inner hole of the broach positioning seat 18 and enters the middle step of the mandrel 1 In the hole, then the broaching machine piston rod base 4 drives the mandrel 1 to gradually move downward, and the guide sleeve 7 moves upward under the action of the cylindrical compression spring a10 until the upper end surface of the guide sleeve 7 is flat with the step surface of the broach positioning seat 18, At the same time, the guide sleeve 7 drives the claws 11 to extend radially inward, and the inner end of the claws 11 stretches out to block the inner spline hole broach 22 shank slope ring groove, as shown in the right side view of Figure 2, and finally the piston rod base of the broaching machine 4 drive mandrel 1, inner spline hole broach 22 and continue to move down until the lower limit (controlled by the travel switch), and the broaching of the inner spline hole of the rotor is completed.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. The equivalent embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present utility model still belong to the technical solution of the present utility model scope of protection.

Claims (6)

1. A jig for splined holes in a rotor pull, comprising a mandrel (1), characterized in that: one end of the mandrel (1) is rotatably connected with a nut (2), and the mandrel (1) is positioned on the pulley The bed piston rod base (4), the top surface of the mandrel (1) is located above the broaching machine piston rod base (4), and a guide sleeve (7) is provided, and the outer surface of the guide sleeve (7) is provided with a protective Cylinder a (8), the outer surface of the mandrel (1) is provided with a protective cylinder b (9), the inside of the guide sleeve (7) is provided with claws (11), and the claws (11 ) and the mandrel (1) is provided with a cylindrical compression spring b (12), between the guide sleeve (7) and the mandrel (1) is provided with a cylindrical compression spring a (10), the guide sleeve (7 ) is provided with a screw plug (13) at the position on one side, the bottom end of the mandrel (1) is fixed with a gas pipe joint (14), and the inside of the gas pipe joint (14) is provided with a gas pipe (15) , the top of the guide sleeve (7) is provided with a broach positioning seat (18), the outer surface of the broach positioning seat (18) has a broaching table (20), and the broaching table (20) The top of the rotor positioning seat (19) is provided with a rotor positioning seat (19), the top surface of the rotor positioning seat (19) is provided with a processed rotor (21), and the hole of the processed rotor (21) has an inner spline hole broach ( twenty two). 2. The jig for drawing the spline hole in the rotor according to claim 1, characterized in that: a flat washer a (3) is arranged between the nut (2) and the mandrel (1). 3. The rotor spline hole jig according to claim 2, characterized in that: hexagon socket head cap screw a (6) is rotatably connected between the mandrel (1) and the protection cylinder b (9) , a flat washer b (5) is arranged between the protective cylinder b (9) and the hexagon socket head screw a (6), and the broach positioning seat (18) is rotationally connected with the mandrel (1) There is a hexagon socket cap screw b (16), and an O-ring (17) is also provided on the outer circular surface of the broach positioning seat (18). 4. The jig for pulling the spline hole in the rotor according to claim 3, characterized in that: the outer circle of the lower end of the mandrel (1) is positioned in the hole of the broaching machine piston rod base (4), and the step surface and the broaching machine piston The upper end surface of the rod base (4) is flattened, and the flat washer a (3) is flattened with the lower end surface of the broaching machine piston rod base (4). 5. The jig for pulling the spline hole in the rotor according to claim 4, characterized in that: the mandrel (1) is provided with evenly distributed horizontal holes and square grooves, and the claws (11) are aligned with the horizontal holes and square grooves. The square groove is slidingly connected, and the outer circle of the upper end of the mandrel (1) is matched with the inner hole of the guide sleeve (7), and the guide sleeve (7) is provided with an annular groove for accommodating the radial retraction of the claws (11). 6 . The jig for splined hole inside the rotor according to claim 1 , characterized in that: the rotor positioning seat ( 19 ) is provided with a vent hole. 7 .

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