CN115090955A

CN115090955A - Rotor draws internal spline hole anchor clamps

Info

Publication number: CN115090955A
Application number: CN202210857808.6A
Authority: CN
Inventors: 叶玉堂; 郑尊纲
Original assignee: Suzhou Renowell Hydraulic Pump Co ltd
Current assignee: Suzhou Renowell Hydraulic Pump Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-09-23

Abstract

The invention provides a rotor internal spline hole pulling clamp, which relates to the technical field of clamps and comprises a mandrel, wherein one end of the mandrel is rotatably connected with a nut, the mandrel is positioned on a piston rod base of a broaching machine, a guide sleeve is arranged on the top surface of the mandrel above the piston rod base of the broaching machine, a protective cylinder a is arranged on the outer surface of the guide sleeve, a protective cylinder b is arranged on the outer surface of the mandrel, when the rotor internal spline hole pulling clamp is actually used, iron chips are prevented from entering by arranging the mandrel, the nut, the piston rod base of the broaching machine, the guide sleeve, the protective cylinder a, the protective cylinder b, a cylindrical compression spring a, a clamping jaw, a cylindrical compression spring b, a screw plug, an air pipe joint, an air pipe, a broach positioning seat, a rotor positioning seat, a workbench, a processed rotor and an internal spline hole pulling broach in the three aspects of increasing the protective cylinder, blowing and increasing a sealing element on the rotor internal spline hole pulling clamp, reasonable structure, stable and reliable work and reduced clamp cost.

Description

Rotor draws internal spline hole anchor clamps

Technical Field

The invention relates to the technical field of clamps, in particular to a rotor pull internal spline hole clamp.

Background

The rotor, the cylinder body, the spherical hinge and other parts of the hydraulic pump or the hydraulic motor are in spline connection with the driving shaft, so that the mechanical processing, assembly and maintenance can be facilitated, wherein the involute inner spline and the involute outer spline are matched and can be automatically centered, the strength of a part base is weakened, the application is the most extensive, the tooth profile of the involute inner spline is complex, the requirement on the vertical precision of an inner spline hole relative to the end surface is very high, a formed inner spline broach is usually adopted for one-time broaching forming on a vertical inner broaching machine, scrap iron is downwards dropped and discharged when the vertical inner broaching machine works, the existing broaching machine clamp at the lower part of the broaching machine is insufficient in protection, the phenomena of clamping stagnation and damage caused by scrap iron entering between clamp sliding parts are frequently generated in use, the processing is unstable, the cost is increased, and the improvement is needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a fixture for pulling an inner spline hole of a rotor.

In order to achieve the purpose, the invention adopts the following technical scheme: a rotor drawing inner spline hole clamp comprises a mandrel, wherein one end of the mandrel is rotatably connected with a nut, the mandrel is positioned on a piston rod base of a drawing machine, a guide sleeve is arranged on the top surface of the mandrel above the piston rod base of the drawing machine, a protective cylinder a is arranged on the outer surface of the guide sleeve, a protective cylinder b is arranged on the outer surface of the mandrel, a clamping jaw is arranged inside the guide sleeve, a cylindrical compression spring b is arranged between the clamping jaw and the mandrel, a cylindrical compression spring a is arranged between the guide sleeve and the mandrel, a plug screw is arranged at one side position inside the guide sleeve, a gas pipe joint is fixedly arranged at the bottom end of the mandrel, a gas pipe is arranged inside the gas pipe joint, a drawing tool positioning seat is arranged above the guide sleeve, a drawing machine workbench is arranged on the outer surface of the drawing tool positioning seat, and a rotor positioning seat is arranged above the drawing machine workbench, the top surface of the rotor positioning seat is provided with a processed rotor, and an inner spline hole broach is arranged in a hole of the processed rotor.

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

In order to fix the protection cylinder b, the invention is improved in that an inner hexagonal socket head cap screw a is rotatably connected between the core shaft and the protection cylinder b, a flat washer b is arranged between the protection cylinder b and the inner hexagonal socket head cap screw a, an inner hexagonal socket head cap screw b is rotatably connected between the broach positioning seat and the core shaft, and an O-shaped ring is further arranged on the outer circular surface of the broach positioning seat.

In order to connect the mandrel with the broaching machine piston rod base, the invention has the improvement that the excircle of the lower end of the mandrel is positioned in the hole of the broaching machine piston rod base, the step surface is flatly attached to the upper end surface of the broaching machine piston rod base, and the flat gasket a is flatly attached to the lower end surface of the broaching machine piston rod base.

In order to ensure that the clamping jaws stably operate, the invention improves the structure that the mandrel is provided with the transverse holes and the square grooves which are uniformly distributed, the clamping jaws are connected with the transverse holes and the square grooves in a sliding way, the excircle of the upper end of the mandrel is matched with the inner hole of the guide sleeve, and the guide sleeve is provided with a ring groove for accommodating the clamping jaws to retract in the radial direction.

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

Compared with the prior art, the invention has the advantages and positive effects that,

in the invention, when the tool is actually used, the mandrel, the nut, the broaching machine piston rod base, the guide sleeve, the protective cylinder a, the protective cylinder b, the cylindrical compression spring a, the clamping jaw, the cylindrical compression spring b, the plug, the air pipe joint, the air pipe, the broaching tool positioning seat, the rotor positioning seat, the broaching machine workbench, the processed rotor and the internally splined hole broaching tool are arranged, and scrap iron is prevented from entering by using the aspects of increasing the protective cylinder, blowing air and increasing the sealing piece of the rotor internally splined hole clamp, so that the tool is reasonable in structure, stable and reliable in work and capable of reducing the cost of the clamp.

Drawings

FIG. 1 is a schematic view of the overall structure of a rotor pull-inner spline hole fixture according to the present invention;

FIG. 2 is a schematic structural view of a jaw in FIG. 1 in a rotor pull-inner spline hole fixture according to the present invention;

FIG. 3 is a schematic view of the expanded structure of FIG. 1 in a rotor pull internal spline hole fixture according to the present invention;

fig. 4 is a schematic structural view of the jaws in fig. 2 in the rotor pull-internal spline hole fixture provided by the invention.

Illustration of the drawings:

1. a mandrel; 2. a nut; 3. a flat washer a; 4. a broaching machine piston rod base; 5. a flat washer b; 6. a hexagon socket head cap screw a; 7. a guide sleeve; 8. a protective cylinder a; 9. a protective cylinder b; 10. a cylindrical compression spring a; 11. a claw; 12. a cylindrical compression spring b; 13. plugging by screwing; 14. a gas pipe joint; 15. an air pipe; 16. a hexagon socket head cap screw b; 17. an O-shaped ring; 18. a broach positioning seat; 19. a rotor positioning seat; 20. a broaching machine table; 21. a rotor to be processed; 22. internal spline hole broach.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

In a first embodiment, referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a rotor draws internal spline hole anchor clamps, including dabber 1, the one end of dabber 1 is rotated and is connected with nut 2, be provided with plain washer a3 between nut 2 and the dabber 1, the plain washer is the thin piece of various shapes usually, be used for keeping apart, prevent pine or dispersed pressure, dabber 1 lower extreme excircle is located broaching machine piston rod base 4 downthehole, the step face is laminated with broaching machine piston rod base 4 up end, and plain washer a3 is laminated with broaching machine piston rod base 4 lower extreme face, the top surface of dabber 1 is located broaching machine piston rod base 4 top and is provided with guide pin bushing 7, the surface of guide pin bushing 7 is provided with protection cylinder a8, the surface of dabber 1 is provided with protection cylinder b9, it is connected with hexagon socket head screw a6 to rotate between dabber 1 and the protection cylinder b9, be provided with plain washer b5 between protection cylinder b9 and the hexagon socket head screw a 6.

Referring to fig. 1-4, a jaw 11 is arranged inside a guide sleeve 7, a transverse hole and a square groove are uniformly arranged on a mandrel 1, the jaw 11 is slidably connected with the transverse hole and the square groove, an outer circle of the upper end of the mandrel 1 is matched with an inner hole of the guide sleeve 7, the guide sleeve 7 is provided with a circular groove for accommodating the jaw 11 to retract radially, a cylindrical compression spring b12 is arranged between the jaw 11 and the mandrel 1, a cylindrical compression spring a10 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 broach positioning seat 18 is arranged above the guide sleeve 7, an inner hexagonal cylindrical head screw b16 is rotatably connected between the broach positioning seat 18 and the mandrel 1, an O-shaped ring 17 is further arranged on the outer circle surface of the broach positioning seat 18, the O-shaped ring 17 is movably sealed along an inner hole of a broaching machine workbench 20, can prevent that iron fillings from getting into, there is broaching machine workstation 20 on the surface of broaching machine positioning seat 18, and the top of broaching machine workstation 20 is provided with rotor positioning seat 19, has seted up the exhaust hole on the rotor positioning seat 19, and the top surface of rotor positioning seat 19 is provided with by processing rotor 21, has internally splined hole broach 22 in by processing rotor 21's the downthehole.

The working principle is as follows: by arranging a mandrel 1, a nut 2, a broaching machine piston rod base 4, a guide sleeve 7, a protective cylinder a8, a protective cylinder b9, a cylindrical compression spring a10, a jaw 11, a cylindrical compression spring b12, a plug 13, an air pipe joint 14, an air pipe 15, a broach positioning seat 18, a rotor positioning seat 19, a broaching machine worktable 20, a processed rotor 21 and an internal spline hole broach 22, firstly, the broaching machine piston rod base 4 drives the mandrel 1 to move upwards and return to an upper limit (controlled by a travel switch), the guide sleeve 7 is pushed to the left side view position in figure 2 at the intersection of an inner hole and a bottom surface of the broaching machine worktable 20, the jaw 11 retracts radially under the action of the cylindrical compression spring b12, the outer end of the jaw 11 moves into an annular groove of the guide sleeve 7, the inner end of the jaw 11 also retracts into a transverse hole of the mandrel 1, and compressed air is introduced through the air pipe 15, the air pipe joint 14 and an air hole of the mandrel 1 (controlled by an electromagnetic air valve and a time relay), blowing off scrap iron in the middle hole of the mandrel 1, enabling the handle part of the internal spline hole broach 22 to penetrate through the inner hole of the processed rotor 21, enabling the inner hole of the broach positioning seat 18 to enter the middle step hole of the mandrel 1, then enabling the broaching machine piston rod base 4 to drive the mandrel 1 to gradually move downwards, enabling the guide sleeve 7 to move upwards under the action of the cylindrical compression spring a10 until the upper end face of the guide sleeve 7 is flush with the step face of the broach positioning seat 18, enabling the guide sleeve 7 to drive the clamping jaw 11 to radially extend inwards, enabling the inner end of the clamping jaw 11 to extend out to clamp the inclined plane ring groove of the handle part of the internal spline hole broach 22, and finally enabling the broaching machine piston rod base 4 to drive the mandrel 1 and the internal spline hole broach 22 to continuously move downwards until the lower limit (controlled by a travel switch) is reached, and broaching the internal spline hole of the rotor is completed.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

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.