CN218575918U

CN218575918U - Plane grinding fixture for processing swash plate of hydraulic pump

Info

Publication number: CN218575918U
Application number: CN202223160527.XU
Authority: CN
Inventors: 陈薪竹; 罗亚飞; 陈真
Original assignee: AVIC Liyuan Hydraulic Co Ltd
Current assignee: AVIC Liyuan Hydraulic Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-07
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a plane grinding clamp for processing a hydraulic pump swash plate, which comprises a base, wherein one or more positioning mechanisms are arranged on the base, a leveling mechanism is arranged between adjacent positioning mechanisms, and a pressing mechanism is also arranged on each positioning mechanism; the positioning mechanism comprises a V-shaped block positioned above the base, a cylindrical pin and a screw are arranged between the V-shaped block and the base, and a mistake-proofing shaft is further arranged on the side face of the V-shaped block. The R arc surface of the processed part is used as a positioning reference to be placed on a V-shaped part of a V-shaped block, a leveling plate of a correcting mechanism is used for correcting the A surface of the processed part, a compression screw drives a compression shaft to move downwards, the compression shaft compresses the part, and the processed part can be processed after the leveling mechanism is taken down. The utility model discloses an aspect can promote product quality, and on the other hand can also improve machining efficiency.

Description

Plane grinding fixture for processing swash plate of hydraulic pump

Technical Field

The utility model belongs to the technical field of machining anchor clamps and specifically relates to a plane grinding anchor clamps of hydraulic pump sloping cam plate processing.

Background

The structure of the hydraulic pump swash plate is shown in figure 1, when the surface A of the swash plate surface grinding machine is machined, the surface A is corrected by a dial indicator after the two positions R are positioned, and a pressing mechanism is used for pressing the inclined surface B to fix a part and a clamp after correction so as to grind the surface A. Because the grinding allowance of the surface A is small, the surface A is positioned to be an arc surface, the surface B is pressed to be a blank surface of a forge piece, and after a part is pressed, the arc surface can rotate along the central axis of the R, so that the plane is inclined, the machining allowance of the surface A is uneven, and the surface A cannot be completely ground, or the surface A needs to be repeatedly corrected for many times. Waste a large amount of non-processing time, even influence product quality, lead to the product to scrap. Therefore, the prior art has the problems of long processing time and easy influence on the product quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plane of hydraulic pump sloping cam plate processing grinds anchor clamps. The utility model discloses an aspect can promote product quality, and on the other hand can also improve machining efficiency.

The technical scheme of the utility model: a plane grinding fixture for processing a swash plate of a hydraulic pump comprises a base, wherein one or more positioning mechanisms are arranged on the base, a leveling mechanism is arranged between every two adjacent positioning mechanisms, and a pressing mechanism is further arranged on each positioning mechanism; the positioning mechanism comprises a V-shaped block positioned above the base, a cylindrical pin and a screw are arranged between the V-shaped block and the base, and a mistake-proofing shaft is further arranged on the side face of the V-shaped block.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the leveling mechanism comprises a guide pillar fixed on the base, a guide sleeve is arranged above the guide pillar, a leveling plate is arranged on the guide sleeve, a connecting shaft is also arranged in the guide sleeve, a spring is arranged between the connecting shaft and the guide sleeve, and a slotted screw matched with the guide sleeve is also arranged on the side surface of the connecting shaft; a second cylindrical pin is arranged between the guide sleeve and the leveling plate; and a limiting cylindrical pin is arranged between the guide pillar and the guide sleeve.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the upper part of the guide post is provided with a first groove, and an open groove is arranged above the first groove; two symmetrical sides outside the guide post are provided with limiting sliding chutes.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, a bottom trepan boring, a middle through hole and an upper trepan boring are arranged in the guide sleeve, a threaded hole and a first pin hole are formed in the side face of the middle through hole, and a pin hole is formed in the side face of the bottom trepan boring.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the bottom of the connecting shaft is provided with a step boss matched with the open slot, and an arc-shaped limiting groove is arranged above the step boss.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the leveling plate comprises a plate body, parts are arranged on the plate body to open holes and leveling holes, and positioning pin holes are formed in the side faces of the leveling holes.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the guide post is connected with the base through a screw.

In the plane grinding fixture for processing the swash plate of the hydraulic pump, the pressing mechanism comprises a screw shaft positioned at the bottom of the base, a pressing screw is arranged on the screw shaft, and a pressing shaft matched with the V-shaped block is arranged above the pressing screw; and a stop pin is arranged on the side surface of the screw shaft.

Compared with the prior art, the utility model consists of a base, a positioning mechanism, a leveling mechanism and a pressing mechanism, and the positioning, leveling and clamping of the processed parts can be realized rapidly through the mutual cooperation of the mechanisms, so that the whole structure is simple, the operation is convenient and rapid, a large amount of non-processing time is saved, and the production efficiency is improved; and product scrap caused by the fact that the machined surface is not leveled can be reduced. Meanwhile, due to the arrangement of the mistake proofing shaft, clamping errors can be effectively avoided. To sum up, the utility model discloses an aspect can promote product quality, and on the other hand can also improve machining efficiency.

Drawings

FIG. 1 is a view of the structure of a part to be machined;

fig. 2 is a top view of the present invention;

FIG. 3 isbase:Sub>A view from the direction A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a structural view of the guide post;

FIG. 6 is a top view of the guide post;

FIG. 7 is a structural view of the guide sleeve;

FIG. 8 is a structural view of a leveling plate;

FIG. 9 is a view of multiple orientations of the connecting shaft.

Description of the reference symbols in the drawings: 1-base, 2-positioning mechanism, 3-leveling mechanism, 4-pressing mechanism, 201-V-shaped block, 202-cylindrical pin, 203-screw, 204-error-proof shaft, 301-guide post, 302-guide sleeve, 303-leveling plate, 304-connecting shaft, 305-spring, 306-slotted screw, 307-second cylindrical pin, 311-first groove, 312-open groove, 313-limit sliding groove, 321-bottom sleeve hole, 322-middle through hole, 323-upper sleeve hole, 324-threaded hole, 325-first pin hole, 326-pin hole, 341-stepped boss, 342-arc limit groove, 331-plate body, 332-part open hole, 333-leveling hole, 334-positioning pin hole, 401-screw shaft, 402-pressing screw, 403-pressing shaft, 404-stopping pin.

Detailed Description

The present invention will be further described with reference to the following examples, which should not be construed as limiting the invention.

Examples are given. A plane grinding fixture for processing a swash plate of a hydraulic pump is shown in figures 2-9 and comprises a base 1, wherein one or more positioning mechanisms 2 are arranged on the base 1, a leveling mechanism 3 is arranged between every two adjacent positioning mechanisms 2, and a pressing mechanism 4 is also arranged on each positioning mechanism 2; the positioning mechanism 2 comprises a V-shaped block 201 positioned above the base 1, a cylindrical pin 202 and a screw 203 are arranged between the V-shaped block 201 and the base 1, and a mistake-proofing shaft 204 is further arranged on the side surface of the V-shaped block 201.

The leveling mechanism 3 comprises a guide pillar 301 fixed on the base 1, a guide sleeve 302 is arranged above the guide pillar 301, a leveling plate 303 is arranged on the guide sleeve 302, a connecting shaft 304 is further arranged in the guide sleeve 302, a spring 305 is arranged between the connecting shaft 304 and the guide sleeve 302, and a slotted screw 306 matched with the guide sleeve 302 is further arranged on the side surface of the connecting shaft 304; a second cylindrical pin 307 is arranged between the guide sleeve 302 and the leveling plate 303; and a limiting cylindrical pin is arranged between the guide pillar 301 and the guide sleeve 302.

A first groove 311 is formed in the upper part of the guide post 301, and an open groove 312 is formed above the first groove 311; two symmetrical sides outside the guide post 301 are provided with limiting sliding chutes 313.

The guide sleeve 302 is internally provided with a bottom sleeve hole 321, a middle through hole 322 and an upper sleeve hole 323, the side surface of the middle through hole 322 is provided with a threaded hole 324 and a first pin hole 325, and the side surface of the bottom sleeve hole 321 is provided with a pin hole 326.

The bottom of the connecting shaft 304 is provided with a step boss 341 matched with the opening groove 312 (311 and 312), and an arc-shaped limiting groove 342 is arranged above the step boss 341.

The leveling plate 303 comprises a plate body 331, a part opening 332 (a window for dismounting and mounting a compression screw) and a leveling hole 333 are arranged on the plate body 331, and a positioning pin hole 334 is arranged on the side surface of the leveling hole 333.

The guide posts 301 are connected to the base 1 by screws.

The pressing mechanism 4 comprises a screw shaft 401 positioned at the bottom of the base 1, a pressing screw 402 is arranged on the screw shaft 401, and a pressing shaft 403 matched with the (processed part) is arranged above the pressing screw 402; the side of the bolt shaft 401 is provided with a stop pin 404.

A method for using a plane grinding clamp for machining a hydraulic pump swash plate includes placing an R arc surface of a part to be machined on a V-shaped block as a positioning reference, utilizing a leveling plate of a correcting mechanism to correct an A surface of the part to be machined, driving a pressing shaft to move downwards through a pressing screw, pressing the part by the pressing shaft, and then removing the leveling mechanism to machine the part to be machined.

A positioning mechanism: the bottom surface of the base 1 is connected with a surface grinding machine workbench, and the upper plane of the base is parallel to the bottom surface. Be equipped with two V type blocks on the base, but two parts of simultaneous processing (according to part size and the multiplicable part quantity of being processed of plain grinding workstation), with screw and cylindric lock with V type block and base fixed connection. The four V-shaped angles of the two V-shaped blocks are consistent, and the central axes of the core rods are consistent with the central height of the upper plane by measuring the core rods with the radius R (the R values of the processed parts are consistent in figure 1), so that the sizes of two parts H processed at the same time are ensured to be consistent (as shown in figure 1). The lower end of the mistake proofing shaft is provided with an external thread which is connected with the internal thread of the base, the lengths of the L1 and the L2 of the processed part are different (shown in figure 1), and the mistake proofing shaft plays a mistake proofing role in the positioning position of the processed part. The guide post is attached to the base by two screws, as shown in fig. 4, which primarily function as a guide for the leveling mechanism.

Leveling mechanism: the structure is shown in fig. 5-9. In the drawing, an excircle with the diameter of d6 in fig. 7 is arranged in a leveling hole on a leveling plate in fig. 8, the excircle with the diameter of d7 in fig. 7 has a limiting effect on the leveling plate, a second cylindrical pin passes through a first pin hole on a guide sleeve and a positioning pin hole on the leveling plate to prevent the leveling plate from relatively moving and rotating on the guide sleeve, the pin hole is fixedly arranged in the limiting cylindrical pin, the limiting cylindrical pin moves in a limiting sliding groove in fig. 6 to play a guiding effect, and a sleeve hole at the bottom of the guide sleeve is sleeved in the excircle of a guide pillar to drive the leveling plate to move up and down; the upper sleeve hole is filled with a spring and then is filled with a connecting shaft, and the connecting shaft is provided with a plurality of outer circular truncated cone step shafts. The outer circular shaft with the diameter d1 is provided with knurls, so that the manual rotation is convenient and the slipping is avoided; the excircle shaft with the diameter d2 is arranged in an upper sleeve hole of the guide sleeve to prevent the spring from popping upwards; an arc-shaped limiting groove (shown in a C-C sectional view) is arranged on the excircle shaft with the diameter of d3, after the spring is arranged on the excircle shaft with the diameter of d3 and then is arranged in the upper sleeve hole of the guide sleeve, a slotted screw is arranged in the threaded hole of the guide sleeve and is screwed into the arc-shaped limiting groove, the spring, the connecting shaft and the guide sleeve are connected into a whole, and the spring is ensured to have certain elasticity and the connecting shaft has certain up-and-down moving space; the diameter is L3 length on the excircle axle that d4 and the diameter is the excircle axle of d5 (be the ladder boss) and all is less than the open slot of guide pillar, when the upper portion trepanning of guide pin bushing is in the excircle axle guide of the diameter of guide pillar and when spacing spout and the first cylindric lock direction downstream, the diameter of connecting axle bottom is the L3 two planes of the excircle axle of d5 (ladder boss) and gets into first groove along the open slot, rotatory connecting axle this moment, in turning over the excircle axle (ladder boss) that the diameter is d5 into first groove, prevent that levelling mechanism upwards pops out, the elasticity of spring compresses tightly the levelling plate downwards simultaneously, the A face of levelling picture 1 part. The installation positions of the slotted screw and the cylindrical pin and the C-C view arc groove of the connecting shaft limit the rotation angle of the connecting shaft, and the leveling plate is ensured to be on the correction surface of the machined part.

The pressing mechanism is constructed as shown in fig. 2 and 3. The screw shaft is provided with two step excircle shafts and a threaded hole, the big step excircle shaft is provided with an arc notch, and after the screw shaft is arranged in the step hole of the base, the arc notch is arranged in the stop pin to prevent the screw shaft from rotating along the central axis, and the design of the screw shaft is convenient for repairing the damaged threaded hole. The pressing shaft is provided with a conical surface with the same angle as the conical surface of the part B in the figure 1, and the conical surface is attached to the conical surface of the part B during pressing.

The use of anchor clamps does: the R arc surface of the processed part in the figure 1 is used as a positioning reference to be placed on the V shape of the V-shaped block of the clamp in the figure 2, the leveling plate of the correcting mechanism corrects the A surface of the processed part, the pressing shaft is driven to move downwards through the pressing screw, the pressing shaft presses the part, and the processed part can be processed after the leveling mechanism is taken down.

Claims

1. The plane of hydraulic pump sloping cam plate processing grinds anchor clamps, its characterized in that: the device comprises a base (1), wherein one or more positioning mechanisms (2) are arranged on the base (1), a leveling mechanism (3) is arranged between every two adjacent positioning mechanisms (2), and a pressing mechanism (4) is further arranged on each positioning mechanism (2); positioning mechanism (2) are equipped with cylindric lock (202) and screw (203) including V type piece (201) that are located base (1) top between V type piece (201) and base (1), and V type piece (201) side still is equipped with mistake proofing axle (204).

2. The flat grinding jig for hydraulic pump swash plate machining according to claim 1, characterized in that: the leveling mechanism (3) comprises a guide post (301) fixed on the base (1), a guide sleeve (302) is arranged above the guide post (301), a leveling plate (303) is arranged on the guide sleeve (302), a connecting shaft (304) is further arranged in the guide sleeve (302), a spring (305) is arranged between the connecting shaft (304) and the guide sleeve (302), and a slotted screw (306) matched with the guide sleeve (302) is further arranged on the side surface of the connecting shaft (304); a second cylindrical pin (307) is arranged between the guide sleeve (302) and the leveling plate (303); and a limiting cylindrical pin is arranged between the guide pillar (301) and the guide sleeve (302).

3. The facing jig for hydraulic pump swash plate processing according to claim 2, characterized in that: a first groove (311) is formed in the upper portion of the guide post (301), and an open groove (312) is formed above the first groove (311); two symmetrical sides outside the guide post (301) are provided with limiting sliding chutes (313).

4. The flat grinding jig for hydraulic pump swash plate machining according to claim 2, characterized in that: the guide sleeve (302) is internally provided with a bottom trepan boring (321), a middle through hole (322) and an upper trepan boring (323), the side surface of the middle through hole (322) is provided with a threaded hole (324) and a first pin hole (325), and the side surface of the bottom trepan boring (321) is provided with a pin hole (326).

5. The facing jig for hydraulic pump swash plate machining according to claim 3, characterized in that: the bottom of the connecting shaft (304) is provided with a step boss (341) matched with the open slot (312), and an arc-shaped limiting groove (342) is arranged above the step boss (341).

6. The flat grinding jig for hydraulic pump swash plate machining according to claim 2, characterized in that: leveling plate (303) are equipped with the part on plate body (331) and let trompil (332) and levelling hole (333) including plate body (331), levelling hole (333) side is equipped with locating pin hole (334).

7. The facing jig for hydraulic pump swash plate processing according to claim 2, characterized in that: the guide post (301) is connected with the base (1) through a screw.

8. The flat grinding jig for hydraulic pump swash plate machining according to claim 1, characterized in that: the pressing mechanism (4) comprises a screw shaft (401) positioned at the bottom of the base (1), a pressing screw (402) is arranged on the screw shaft (401), and a pressing shaft (403) matched with a part to be processed is arranged above the pressing screw (402); a stop pin (404) is arranged on the side surface of the bolt shaft (401).