CN210060777U

CN210060777U - Supplementary servomotor piston grinding shaft plug anchor clamps for excircle

Info

Publication number: CN210060777U
Application number: CN201920537232.9U
Authority: CN
Inventors: 王士珍
Original assignee: Tianjin City Yuan Synthesis Technology Development Co Ltd
Current assignee: Tianjin City Yuan Synthesis Technology Development Co Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-02-14
Anticipated expiration: 2029-04-18

Abstract

The utility model provides an auxiliary servomotor piston grinding shaft plug clamp for excircle, which comprises a first shaft plug and a second shaft plug, wherein the first shaft plug and the second shaft plug respectively comprise a screwing part, a positioning part and a thread screwing-in part which are coaxially arranged, a top hole is arranged on one end surface of the screwing part, the positioning part is fixedly connected with the other end surface of the screwing part, the side surface of the positioning part and the central axes of the first shaft plug and the second shaft plug form an included angle of 60 degrees, two groups of first thread holes are arranged on the positioning part, the two groups of first thread holes are symmetrically arranged by the central axis of the positioning part, a second thread hole corresponding to the first thread hole is arranged on the thread screwing-in part, the thread screwing-in part is connected on the positioning part by the threads of the first thread hole and the second thread hole, external threads are arranged on the peripheral side wall of the thread screwing, be provided with bearing structure between the recess, the utility model discloses be convenient for adjust, convenient assembling, the practicality is strong.

Description

Supplementary servomotor piston grinding shaft plug anchor clamps for excircle

Technical Field

The utility model belongs to the technical field of mechanical equipment, especially, relate to an auxiliary servomotor piston grinding axle plug anchor clamps for excircle.

Background

The auxiliary servomotor is a servomotor for operating the main pressure distribution valve, and the piston is always in a position corresponding to the middle position of the main pressure distribution valve when the speed regulating system is in a stable state, so that the piston is a key part in the auxiliary servomotor, and the good coaxiality and precision of the piston are guaranteed in the production process of the piston.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide an auxiliary servomotor piston grinding excircle is with axle stopper anchor clamps that dress card is convenient, be convenient for the adjustment, the practicality is strong.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides an auxiliary servomotor piston grinding axle stopper anchor clamps for excircle, includes first axle stopper and second axle stopper, first axle stopper and second axle stopper all include the portion of screwing, location portion and the screw thread screw in portion of coaxial setting, be equipped with the apical pore on the terminal surface of the portion of screwing, the apical pore with the coaxial setting of first axle stopper and second axle stopper, location portion with the other terminal surface fixed connection of the portion of screwing, the side surface of location portion with the center pin of first axle stopper and second axle stopper constitutes contained angle a, contained angle a is 60, be provided with two sets of first screw holes on the location portion, two sets of first screw hole with the axis symmetry setting of location portion, be provided with the second screw hole corresponding with first screw hole in the screw thread screw in portion, screw thread screw in portion passes through first screw hole and second screw hole threaded connection in location portion, the screw plug is characterized in that external threads are arranged on the peripheral side wall of the screw screwing-in portion, grooves are symmetrically formed in the inner wall of the screw screwing-in portion of the first shaft plug along the central axis, and a supporting structure is arranged between the grooves.

Further, the tightening part and the positioning part may be integrally formed.

Furthermore, the top hole is a cone, a top sleeve matched with the top hole is arranged in the top hole, and the top sleeve is connected with the screwing part through a bolt.

Furthermore, a screwing flat groove is formed in the outer side surface of the screwing part.

Further, the supporting structure comprises a holding portion, a cavity is formed in the holding portion, supporting portions are arranged on the upper side and the lower side of the holding portion in a penetrating mode, the supporting portions are matched with the grooves, one end, located in the cavity, of each supporting portion is provided with a limiting portion, and a compression spring is arranged between the limiting portions.

Further, the length of the screw-in portion of the first shaft plug is greater than the length of the screw-in portion of the second shaft plug.

Further, the first shaft plug and the second shaft plug are No. 45 steel shaft plugs, nitrided steel shaft plugs, low-carbon alloy steel shaft plugs or carburized steel shaft plugs.

Compared with the prior art, the utility model has the advantages and beneficial effect be:

1. the utility model discloses set up the side surface of location portion on first axle stopper and the second axle stopper into the inclined plane, and be 60 jiaos with the center pin of axle stopper, utilize 60 central angle principle, it is firm with supplementary servomotor piston dress card to make the axle stopper, the portion of screwing simultaneously, location portion and screw thread portion all are coaxial setting, the both ends that make the supplementary servomotor piston after the grinding have good axiality, location portion and screw thread portion go up equal axial symmetry in addition are provided with the screw hole, carry out threaded connection through the screw hole, can realize the screw thread portion of fixed different diameters in location portion, it is convenient to change, realize the excircle grinding to different pistons, therefore, the clothes hanger is strong in practicability.

2. The utility model discloses adopt screw thread dress card to connect with axle stopper and supplementary servomotor piston, connection structure is simple, and the length that sets up the screw thread screw in portion of primary shaft stopper simultaneously is greater than the length of the screw thread screw in portion of secondary shaft stopper, because power unit is connected to the apical pore end of primary shaft stopper, can guarantee that primary shaft stopper and piston connection's are firm more, sets up bearing structure in the inboard of screw thread screw in portion simultaneously, can further strengthen the stability of screw thread screw in portion, and protection screw thread screw in portion can not take place to warp simultaneously.

Drawings

Fig. 1 is a whole sectional view of the shaft plug clamp for grinding the outer circle of the auxiliary servomotor piston of the present invention.

Fig. 2 is an exploded view of the first shaft plug of the shaft plug clamp for assisting the servomotor piston grinding excircle of the present invention.

In the figure: 1-a first plug; 2-a second shaft plug; 3-a screwing part; 4-a positioning part; 5-a threaded screw-in part; 6-top hole; 7-a first threaded hole; 8-external threads; 9-a groove; 10-top sleeve; 11-screwing the flat groove; 12-a grip portion; 13-a cavity; 14-a support; 15-a limiting part; 16-compression spring.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 and 2, a shaft plug clamp for grinding an excircle of an auxiliary servomotor piston comprises a first shaft plug 1 and a second shaft plug 2, wherein the first shaft plug 1 and the second shaft plug 2 respectively comprise a screwing part 3, a positioning part 4 and a threaded screwing part 5 which are coaxially arranged, a top hole 6 is arranged on one end surface of the screwing part 3, the top hole 6 is coaxially arranged with the first shaft plug 1 and the second shaft plug 2, so that two ends of the auxiliary servomotor piston after grinding have good coaxiality, the positioning part 4 is fixedly connected with the other end surface of the screwing part 3, an included angle a is formed between the side surface of the positioning part 4 and the central axes of the first shaft plug 1 and the second shaft plug 2, the included angle a is 60 degrees, the side surfaces of the positioning parts 4 on the first shaft plug 1 and the second shaft plug 2 are inclined planes and form an angle of 60 degrees with the central axis of the shaft plugs, and the principle of 60 degrees is utilized, the shaft plug and the auxiliary servomotor piston are firmly clamped, two groups of first threaded holes 7 are formed in the positioning portion 4, the two groups of first threaded holes 7 are symmetrically arranged along the central axis of the positioning portion 4, a second threaded hole corresponding to the first threaded hole 7 is formed in the threaded screwing-in portion 5, the threaded screwing-in portion 5 is in threaded connection with the positioning portion 4 through the first threaded hole 7 and the second threaded hole, threaded screwing-in portions 5 with different diameters can be fixed on the positioning portion 4, replacement is convenient, outer circle grinding of different pistons is achieved, practicability is high, external threads 8 are formed in the peripheral side wall of the threaded screwing-in portion 5, the shaft plug and the auxiliary servomotor piston are connected in a threaded clamping mode, the connecting structure is simple, operation is convenient, grooves 9 are symmetrically formed in the inner wall of the threaded screwing-in portion 5 of the first shaft plug 1 along the central axis, a supporting structure is arranged between the grooves 9, so that the stability of the threaded screwing part 5 can be enhanced, and meanwhile, the threaded screwing part 5 is protected from deformation.

Further, the screwing part 3 and the positioning part 4 can be integrally formed, and the integrity and the coaxiality are high.

Further, the apical pore 6 is the cone, be provided with in the apical pore 6 rather than assorted apical cover 10, the apical cover 10 with 3 bolted connection of portion of screwing, the apical needle seat structure on the present cylindrical grinder all sets up to the taper shape, when installing on the cylindrical grinder after accomplishing axle stopper and the assembly of supplementary servomotor piston, the apical pore 6 of cone can cooperate with the apical needle seat each other and step up, but the apical needle seat can make the apical pore 6 receive certain wearing and tearing after 6 cooperation time of apical needle seat and apical pore, lead to the axiality of grinding to reduce, need change whole axle stopper, the cost is too high, consequently, be provided with assorted apical cover 10 in the apical pore 6, make apical cover 10 and apical needle seat direct contact, apical cover 10 threaded connection is in the portion of screwing 3, can conveniently change, reduce cost.

Furthermore, a screwing flat groove 11 is formed in the outer side surface of the screwing part 3, and the shaft plug is conveniently screwed to the end part of the auxiliary servomotor piston by a tightening tool through the screwing flat groove 117.

Further, the supporting structure comprises a holding portion 12, a cavity 13 is formed in the holding portion 12, supporting portions 14 penetrate through the upper side and the lower side of the holding portion 12, the supporting portions 14 are matched with the grooves 9, one end, located in the cavity 13, of each supporting portion 14 is provided with a limiting portion 15, a compression spring 16 is arranged between the limiting portions 15, and the supporting structure can be kept in a supporting state for the threaded screwing portion 5 all the time through the design of the supporting structure.

Further, the length of the threaded portion 5 of the first shaft plug 1 is greater than that of the threaded portion 5 of the second shaft plug 2, and the top hole end of the first shaft plug 1 is connected with a power mechanism, so that the first shaft plug 1 and the piston can be connected more stably.

Furthermore, the first shaft plug 1 and the second shaft plug 2 are 45-grade steel shaft plugs, nitrided steel shaft plugs, low-carbon alloy steel shaft plugs or carburized steel shaft plugs, and the 45-grade steel shaft plugs can obtain better cutting performance and higher comprehensive mechanical properties such as strength, toughness and the like due to the fact that 45-grade steel is low in price and is quenched and tempered; the nitrided steel shaft plug is made of materials such as 38CrMoAl, has high wear resistance and high strength, has good heat resistance and corrosion resistance, is not easy to break after heat treatment and qualitative treatment, and has long service life; the material of the low-carbon alloy steel shaft plug, such as 40Cr steel, is one of the most widely used steels in the mechanical manufacturing industry, has good comprehensive mechanical property and low-temperature impact toughness after quenching and tempering, is suitable for high-frequency quenching treatment, has good hardenability, is not easy to break after heat treatment and qualitative treatment, and has long service life; the carburized steel shaft plug is made of 15CrMn, belongs to carburized steel with good hardenability, has high surface hardness, good wear resistance and high endurance strength at high temperature, and is suitable for preparing shaft plug parts.

Examples

Grinding the 100-degree single-adjustment and double-adjustment auxiliary servomotor piston excircles phi 60g5 and phi 90g5 on an M1432 cylindrical grinding machine, wherein the thread sizes of the internal threads at the two ends of the auxiliary servomotor piston are M33x2 and M39x2, the inner walls at the two ends of the auxiliary servomotor piston are provided with inclined planes, the inclined planes form an angle of 60 degrees with the central axis of the auxiliary servomotor piston, the first shaft plug 1 and the second shaft plug 2 are respectively screwed into the corresponding end faces of the auxiliary servomotor piston, the included angle a of the positioning parts 4 on the first shaft plug 1 and the second shaft plug 2 is 60 degrees and corresponds to the angle of 60 degrees on the auxiliary servomotor piston, so that the first shaft plug 1 and the second shaft plug 2 are compactly assembled with the auxiliary servomotor piston, the top sleeve 10 is fixed in the top hole 6 and is assembled on the cylindrical grinding machine through the top sleeve 10 for grinding, and after grinding, the excircle phi 60g5 and phi 90g5 degrees of the auxiliary servomotor piston are detected to be 0.01, the shaft plug is convenient to mount and clamp and convenient to adjust.

Simultaneously, equal axial symmetry is provided with the screw hole on location portion 4 and the screw in portion 5, carries out threaded connection through the screw hole, can realize fixing the screw in portion 5 of different diameters on location portion 4, and it is convenient to change, realizes the cylindrical grinding to different pistons, and the practicality is strong.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides an auxiliary servomotor piston grinding excircle is with axle stopper anchor clamps which characterized in that: the screw comprises a first shaft plug (1) and a second shaft plug (2), wherein the first shaft plug (1) and the second shaft plug (2) respectively comprise a screwing part (3), a positioning part (4) and a thread screwing part (5) which are coaxially arranged, a top hole (6) is arranged on one end face of the screwing part (3), the top hole (6) and the first shaft plug (1) and the second shaft plug (2) are coaxially arranged, the positioning part (4) is fixedly connected with the other end face of the screwing part (3), the side surface of the positioning part (4) and the central shafts of the first shaft plug (1) and the second shaft plug (2) form an included angle a, the included angle a is 60 degrees, two groups of first threaded holes (7) are arranged on the positioning part (4), the two groups of first threaded holes (7) are symmetrically arranged with the central axis of the positioning part (4), and a second threaded hole corresponding to the first threaded hole (7) is arranged on the thread screwing part (5), screw thread screw in portion (5) pass through first screw hole (7) and second screw hole bolted connection are in on location portion (4), be provided with external screw thread (8) on the week lateral wall of screw thread screw in portion (5), be provided with recess (9) along the axis symmetry on the inner wall of screw thread screw in portion (5) of primary shaft stopper (1), be provided with bearing structure between recess (9).

2. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 1, characterized in that: the screwing part (3) and the positioning part (4) can be integrally formed.

3. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 1, characterized in that: the top hole (6) is a cone, a top sleeve (10) matched with the top hole is arranged in the top hole (6), and the top sleeve (10) is connected with the screwing part (3) through a bolt.

4. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 2, characterized in that: and a screwing flat groove (11) is arranged on the outer side surface of the screwing part (3).

5. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 1, characterized in that: the supporting structure comprises a holding part (12), a cavity (13) is arranged in the holding part (12), supporting parts (14) are arranged on the upper side and the lower side of the holding part (12) in a penetrating mode, the supporting parts (14) are matched with the grooves (9), one ends, located on the cavity (13), of the supporting parts (14) are provided with limiting parts (15), and compression springs (16) are arranged between the limiting parts (15).

6. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 1, characterized in that: the length of the threaded screwing part (5) of the first shaft plug (1) is greater than that of the threaded screwing part (5) of the second shaft plug (2).

7. The shaft plug clamp for assisting servomotor piston grinding excircle according to claim 1, characterized in that: the first shaft plug (1) and the second shaft plug (2) are No. 45 steel shaft plugs, nitrided steel shaft plugs, low-carbon alloy steel shaft plugs or carburized steel shaft plugs.