CN115090955A - Rotor draws internal spline hole anchor clamps - Google Patents

Abstract

The invention provides a rotor pulling inner spline hole clamp, which relates to the technical field of clamps, and includes a mandrel, one end of the mandrel is rotatably connected with a nut, the mandrel is positioned on the base of a piston rod of a broaching machine, and the mandrel is The top surface is located above the piston rod base of the broaching machine and is provided with a guide sleeve, 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. Shaft, 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 The positioning seat, the broaching table, the rotor to be processed and the internal spline hole broach are used in the rotor to pull the internal spline hole fixture to increase the protection cylinder, blow air and increase the seal to prevent the iron filings from entering, and the structure is reasonable. , The work is stable and reliable, and the cost of the fixture is reduced.

Description

A kind of rotor pulling inner spline hole fixture

technical field

The invention relates to the technical field of clamps, in particular to a clamp for pulling inner spline holes of a rotor.

Background technique

The rotor, cylinder block, ball joint and other parts of the hydraulic pump or hydraulic motor and the drive shaft are designed as spline connections, which can facilitate machining, assembly, maintenance and replacement. The involute inner and outer splines can be automatically centered. The strength of the base of the part is weak, and it is the most widely used. The profile of the involute internal spline is complex, and the vertical accuracy of the internal spline hole relative to the end face is very high. Usually, a formed internal spline broach is used in the vertical inner The broaching machine is broached and formed at one time, while the vertical inner broaching machine falls down to discharge iron scraps. The existing broaching machine fixtures located under the broaching machine are insufficiently protected, and iron filings often enter between the sliding parts of the fixtures during use. Lead to jamming, damage, unstable processing, increased cost, and need to be improved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a rotor pulling inner spline hole clamp in order to solve the shortcomings existing in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a rotor pulling inner spline hole fixture, comprising a mandrel, one end of the mandrel is rotatably connected with a nut, and the mandrel is positioned on the base of the piston rod of the broaching machine, The top surface of the mandrel is located above the piston rod base of the broaching machine and is provided with a guide sleeve, the outer surface of the guide sleeve is provided with a protective cylinder a, the outer surface of the mandrel is provided with a protective cylinder b, the The inside of the guide sleeve is provided with a claw, a cylindrical compression spring b is arranged between the claw and the mandrel, a cylindrical compression spring a is disposed between the guide sleeve and the mandrel, and the inside of the guide sleeve is located on one side A screw plug is provided at the position, a trachea joint is fixed at the bottom end of the mandrel, a trachea is arranged inside the trachea joint, a broach locating seat is arranged above the guide sleeve, and the broach locating seat is There is a broaching table on the outer surface, a rotor positioning seat is arranged above the broaching table, the top surface of the rotor positioning seat is provided with a rotor to be processed, and the hole of the rotor to be processed has an inner spline hole for pulling Knife.

In order to prevent the nut from loosening, the present invention improves that a flat washer a is arranged between the nut and the mandrel.

In order to fix the protective cylinder b, the present invention improves that a hexagonal socket head screw a is rotatably connected between the mandrel and the protective cylinder b, and a hexagonal socket head screw a is arranged between the protective cylinder b and the hexagonal socket head screw a. There is a flat washer b, a hexagonal socket head screw b is rotatably connected between the broach locating seat and the mandrel, and an O-ring is also provided on the outer surface of the broach locating seat.

In order to connect the mandrel with the base of the piston rod of the broaching machine, the present invention improves that the outer circle of the lower end of the mandrel is positioned in the hole of the base of the piston rod of the broaching machine, the stepped surface is flat with the upper end surface of the base of the piston rod of the broaching machine, and the flat washer a is flat with the lower end surface of the base of the piston rod of the broaching machine.

In order to make the jaws run stably, the present invention improves that the mandrel is provided with evenly distributed horizontal holes and square grooves, and the jaws are slidably connected to the horizontal holes and square grooves, and the outer circle of the upper end of the mandrel is connected to the guide sleeve. The inner hole is matched, and the guide sleeve is provided with an annular groove for accommodating the radial retraction of the jaw.

In order to discharge excess air, the present invention improves that, the rotor positioning seat is provided with an exhaust hole.

Compared with the prior art, the advantages and positive effects of the present invention are,

In the present invention, in actual use, by setting the mandrel, the nut, the base of the piston rod of the broaching machine, the guide sleeve, the protective cylinder a, the protective cylinder b, the cylindrical compression spring a, the clamping claw, the cylindrical compression spring b, the screw plug, Air pipe joint, air pipe, broach positioning seat, rotor positioning seat, broaching table, processed rotor and internal spline hole broach, using the rotor to pull the internal spline hole fixture to increase the protection cylinder, blow air and increase the seal There are three aspects to prevent iron filings from entering, the structure is reasonable, the work is stable and reliable, and the cost of the fixture is reduced.

Description of drawings

1 is a schematic diagram of the overall structure of a rotor pulling inner spline hole fixture provided by the present invention;

FIG. 2 is a schematic structural diagram of the jaw in FIG. 1 in a rotor pulling inner spline hole fixture provided by the present invention;

FIG. 3 is a schematic diagram of the unfolded structure of FIG. 1 in a rotor pulling inner spline hole fixture provided by the present invention;

FIG. 4 is a schematic structural diagram of the claw shown in FIG. 2 in a fixture for pulling the inner spline hole of the rotor according to the present invention.

illustration:

1. Mandrel; 2. Nut; 3. Flat washer a; 4. Piston rod base of broaching machine; 5. Flat washer b; 6. Hexagon socket head screw a; 7. Guide bush; 8. Protection cylinder a; 9. Protection cylinder b; 10. Cylindrical compression spring a; 11. Claw; 12. Cylindrical compression spring b; 13. Screw plug; 14. Tracheal joint; 15. Trachea; , O-ring; 18, broach positioning seat; 19, rotor positioning seat; 20, broaching table; 21, processed rotor; 22, internal spline hole broach.

Detailed ways

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

Many specific details are set forth in the following description to facilitate a full understanding of the present invention, however, the present invention may also be implemented in other ways than those described herein, and therefore, the present invention is not limited to the specific embodiments disclosed in the following description. limit.

Embodiment 1, please refer to Figures 1-4, the present invention provides a technical solution: a rotor pulling inner spline hole fixture, including a mandrel 1, one end of the mandrel 1 is rotatably connected with a nut 2, and the nut 2 and the mandrel A flat washer a3 is arranged between 1. The flat washer is usually a thin piece of various shapes to isolate, prevent loosening or disperse pressure. It is flat with the upper end 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. The top surface of the mandrel 1 is located above the broaching machine piston rod base 4 and is provided with a guide sleeve 7. The outer surface of the sleeve 7 is provided with a protective cylinder a8, the outer surface of the mandrel 1 is provided with a protective cylinder b9, a hexagonal socket head screw a6 is rotatably connected between the mandrel 1 and the protective cylinder b9, and the protective cylinder b9 is connected to the protective cylinder b9. A flat washer b5 is arranged between the socket head cap screws a6.

Please refer to Fig. 1-4, the guide sleeve 7 is provided with a 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 the square grooves, and the upper end of the mandrel 1 The outer circle is matched with the inner hole of the guide sleeve 7. The guide sleeve 7 is provided with a ring groove for accommodating the radial retraction of the jaw 11. A cylindrical compression spring b12 is arranged between the jaw 11 and the mandrel 1. The guide sleeve 7 and the mandrel 1 A cylindrical compression spring a10 is arranged between them, a screw plug 13 is arranged inside the guide sleeve 7 at one side, a trachea joint 14 is fixed at the bottom end of the mandrel 1, and a trachea 15 is arranged inside the trachea joint 14. 7 is provided with a broach positioning seat 18, a hexagonal socket head screw b16 is rotatably connected between the broach positioning seat 18 and the mandrel 1, and an O-ring 17 is also provided on the outer surface of the broach positioning seat 18. The ring 17 moves and seals along the inner hole of the broaching table 20, which can prevent iron filings from entering. The outer surface of the broaching tool positioning seat 18 is provided with a broaching table 20, and a rotor positioning seat 19 is arranged above the broaching table 20. The rotor The positioning seat 19 is provided with an exhaust hole, the top surface of the rotor positioning seat 19 is provided with a rotor 21 to be processed, and the hole of the rotor 21 to be processed is provided with an internal spline hole broach 22 .

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

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications to equivalent changes. The 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 still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.

Claims (6)

1. The utility model provides a rotor draws internal spline hole anchor clamps, includes dabber (1), its characterized in that: one end of the mandrel (1) is rotatably connected with a nut (2), the mandrel (1) is positioned on a broaching machine piston rod base (4), a guide sleeve (7) is arranged on the top surface of the mandrel (1) above the broaching machine piston rod base (4), a protective cylinder a (8) is arranged on the outer surface of the guide sleeve (7), a protective cylinder b (9) is arranged on the outer surface of the mandrel (1), a clamping jaw (11) is arranged inside the guide sleeve (7), a cylindrical compression spring b (12) is arranged between the clamping jaw (11) and the mandrel (1), a cylindrical compression spring a (10) is arranged between the guide sleeve (7) and the mandrel (1), a plug (13) is arranged at one side position inside the guide sleeve (7), an air pipe joint (14) is fixedly arranged at the bottom end of the mandrel (1), an air pipe (15) is arranged inside the air pipe joint (14), a broaching tool positioning seat (18) is arranged above the guide sleeve (7), a broaching machine workbench (20) is arranged on the outer surface of the broaching tool positioning seat (18), a rotor positioning seat (19) is arranged above the broaching machine workbench (20), a processed rotor (21) is arranged on the top surface of the rotor positioning seat (19), and an internal spline hole broaching tool (22) is arranged in a hole of the processed rotor (21).

2. The rotor internally splined bore clamp of claim 1, wherein: a flat washer a (3) is arranged between the nut (2) and the mandrel (1).

3. The rotor pull internally splined bore clamp of claim 2, wherein: an inner hexagonal socket head cap screw a (6) is rotatably connected between the mandrel (1) and the protective cylinder b (9), a flat washer b (5) is arranged between the protective cylinder b (9) and the inner hexagonal socket head cap screw a (6), an inner hexagonal socket head cap screw b (16) is rotatably connected between the broach positioning seat (18) and the mandrel (1), and an O-shaped ring (17) is further arranged on the outer circular surface of the broach positioning seat (18).

4. The rotor pull internally splined bore clamp of claim 3, wherein: the excircle of the lower end of the mandrel (1) is positioned in a hole of a piston rod base (4) of the broaching machine, the step surface is flatly attached to the upper end surface of the piston rod base (4) of the broaching machine, and the flat washer a (3) is flatly attached to the lower end surface of the piston rod base (4) of the broaching machine.

5. The rotor internally splined bore clamp of claim 4, wherein: be equipped with the cross bore and the square groove of equipartition on dabber (1), and jack catch (11) and cross bore and square groove sliding connection, dabber (1) upper end excircle and guide pin bushing (7) hole cooperation, guide pin bushing (7) are equipped with the annular that holds radial retraction of jack catch (11).

6. The rotor pull internally splined bore clamp of claim 1, wherein: the rotor positioning seat (19) is provided with an exhaust hole.

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