CN214444871U

CN214444871U - Crankshaft four-axis drill double-end hole is with location frock

Info

Publication number: CN214444871U
Application number: CN202023157392.2U
Authority: CN
Inventors: 崔超; 崔越; 崔文来; 崔建涛; 崔雅臣; 李绍功; 张涛; 李绍德
Original assignee: Tianjin Baolai Precision Machinery Industry Group Co Ltd
Current assignee: Tianjin Baolai Precision Machinery Industry Group Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-22
Anticipated expiration: 2030-12-24

Abstract

A positioning tool for double-end holes of a crankshaft four-axis drill comprises a rotary table and a T-shaped positioning block, wherein one end of the T-shaped positioning block is fixedly arranged on the side wall of the middle part of the rotary table, the T-shaped positioning block and the axis of the rotary table are arranged in a collinear manner, and a crankshaft positioning table is manufactured by extending the other end of the T-shaped positioning block along the horizontal direction; the middle part threaded connection of bent axle locating platform has the pressfitting positioning element of axial positioning bent axle, and threaded connection has the side positioning element of fixed T type locating piece on the lateral wall of bent axle locating platform, and the epaxial location hole that has a plurality of axial link up and radial positioning bent axle of making out of this bent axle locating platform, and the slip grafting has the inserted bar of a plurality of circumference location bent axles on the bent axle locating platform. This location frock can press from both sides tight location to radial, circumference and the axial of many bent axles simultaneously to need not to demolish the frock before the drilling of bent axle both ends is accomplished, the relative error between the eccentric orfice of effective control bent axle both ends guarantees the uniformity of processing product error when improving machining efficiency.

Description

Crankshaft four-axis drill double-end hole is with location frock

Technical Field

The utility model relates to a centre gripping equipment technical field specifically is a bent axle four-axis bores double-end hole and uses location frock.

Background

The crankshaft is different from a common shaft, the two ends of the crankshaft are in eccentric connection, the eccentricity of drill holes at the two ends of the crankshaft is difficult to control during machining, a numerical control lathe or a machining center is mostly adopted for batch machining in the prior art, but due to different experience of machining personnel, the positioning accuracy of the crankshaft on a machine tool is different, the eccentricity of the two ends of the machined crankshaft is also different, and the error is difficult to control.

Therefore, how to design a bent axle drilling frock, guarantee the uniformity of bent axle tip drilling error, improve bent axle drilling yield, and improve machining efficiency, the problem that the skilled person in the art needs a lot of solution.

Through published patent searches, the following comparison documents were found:

CN201721277636.6 discloses a drilling tool for a crankshaft, which comprises a base, two sets of lifting mechanisms and an index plate which is positioned at the top ends of the two sets of lifting mechanisms and is provided with a three-jaw chuck; a middle transmission shaft with two ends respectively provided with a middle bevel gear is horizontally arranged in the base transmission bin; the lifting mechanism comprises a lead screw and a guide rail plate which are vertically arranged, a threaded column sleeve is screwed at the top end of the lead screw, the part of the lead screw, which is positioned in the shaft sleeve, is a smooth shaft section, driven bevel gears at the bottom ends of the two lead screws are respectively and correspondingly meshed with the two middle bevel gears, the thread screwing directions on the two lead screws are opposite, the middle part of the middle transmission shaft is a worm section, the worm section is meshed with a turbine below the middle transmission shaft, and the turbine is connected with a motor spindle arranged in the transmission bin; the graduated disk is fixed on the mount table, and the jack catch of three-jaw chuck is just to the U type breach of guide rail board upper end, and the U type breach can supply bent axle both ends to pass. The utility model discloses can adapt to the bent axle clamping drilling of multiple specification, avoid using long drill bit to collapse and bore.

Through the analysis, the bent axle drilling frock in the above-mentioned patent that discloses all has great difference with this application in structure and function, does not influence the novelty of this application admittedly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's weak point, provide a bent axle four-axis drill double-end hole is with location frock, this location frock can press from both sides tight location to radial, circumference and the axial of many bent axles simultaneously to need not to demolish the frock before the drilling of bent axle both ends is accomplished, relative error between the eccentric orfice of effective control bent axle both ends guarantees the uniformity of processing product error when improving machining efficiency.

A positioning tool for double-end holes of a crankshaft four-axis drill comprises a rotary table and a T-shaped positioning block, wherein one end of the T-shaped positioning block is fixedly arranged on the side wall of the middle part of the rotary table, the T-shaped positioning block and the axis of the rotary table are arranged in a collinear manner, and a crankshaft positioning table is manufactured by extending the other end of the T-shaped positioning block along the horizontal direction; the middle part threaded connection of bent axle locating platform has the pressfitting positioning element of axial positioning bent axle, and threaded connection has the side positioning element of fixed T type locating piece on the lateral wall of bent axle locating platform, and the epaxial location hole that has a plurality of axial link up and radial positioning bent axle of making out of this bent axle locating platform, and the slip grafting has the inserted bar of a plurality of circumference location bent axles on the bent axle locating platform.

The pressing positioning unit comprises a pressing bolt and a pressing plate, wherein the pressing bolt penetrates through the pressing plate and is in threaded connection with the crankshaft positioning table, and a nut of the pressing bolt is supported on the top surface of the pressing plate in a pressing mode; the two ends of the pressure plate are provided with positioning cambered surfaces matched with and supporting the periphery of the crankshaft, and the bottom surfaces of the two ends of the pressure plate are pressed on the protruding parts of the periphery of the crankshaft.

The side positioning unit comprises a positioning bolt and a positioning block, wherein the positioning bolt penetrates through the positioning block and is in threaded connection with the side wall of the crankshaft positioning table; one side of the positioning block is pressed and supported by a nut of the positioning bolt, and the other side of the positioning block is matched with the side wall of the crankshaft positioning table to position the T-shaped positioning block.

A pin hole which is communicated in the horizontal direction is formed in the top of the inserted link, and a positioning pin is inserted in the pin hole; one end of the positioning pin is inserted and positioned with the protruding part of the crankshaft.

The utility model has the advantages and the technical effect be:

the utility model discloses a crankshaft four-axis bores double-end hole and uses location frock connects the lathe through the carousel, the support position of the T type locating piece of convenient mechanical location, the bent axle locating platform that extends horizontally on the T type locating piece provides the main part location of bent axle, the bent axle locating platform on this T type locating piece is pegged graft and radial spacing bent axle through the axle locating hole, the inserted bar of activity grafting on the bent axle locating platform and locating hole and locating pin on the inserted bar are used for circumferential direction location bent axle, clamp bolt and clamp plate threaded connection are used for axial spacing bent axle on the top surface of bent axle locating platform; finally, the positioning block is pressed tightly through a positioning bolt of the side positioning unit, and the positioning block and the side wall of the crankshaft positioning table are matched with a positioning rod and the like on a clamping machine tool to lock the T-shaped positioning block and the rotating angle of the rotating disc

The utility model discloses a bent axle four-axis bores double-end hole and uses location frock, this location frock can press from both sides tight location to radial, circumference and the axial of many bent axles simultaneously, guarantees the uniformity of processing product error when improving machining efficiency, is a bent axle four-axis bores double-end hole and uses location frock that has higher creativity.

Drawings

Fig. 1 is a perspective view of the present invention;

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

fig. 3 is a side view of the present invention;

FIG. 4 is a cross-sectional view of section A-A of FIG. 3;

in the figure: 1-a turntable; 2-T-shaped positioning blocks; 3-pressing and positioning unit; 4-crankshaft positioning table; 5-a lateral positioning unit; 6-inserting a rod; 7-a crankshaft; 8-pressing a plate; 9-positioning blocks; 10-a positioning bolt; 11-a hold-down bolt; 12-positioning the arc surface; 13-pin holes; 14-axle locating hole.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

A positioning tool for drilling double-end holes on a crankshaft four-axis drill comprises a rotary table 1 and a T-shaped positioning block 2, wherein one end of the T-shaped positioning block is fixedly arranged on the side wall of the middle part of the rotary table, the T-shaped positioning block and the axis of the rotary table are arranged in a collinear manner, and a crankshaft positioning table 4 is formed by extending the other end of the T-shaped positioning block along the horizontal direction; the middle part of the crankshaft positioning table is in threaded connection with a pressing positioning unit 3 of an axial positioning crankshaft 7, the side wall of the crankshaft positioning table is in threaded connection with a side positioning unit 5 of a fixed T-shaped positioning block, a plurality of axial through and radial positioning crankshaft shaft positioning holes 14 are formed in the crankshaft positioning table, and a plurality of inserting rods 6 of circumferential positioning crankshafts are inserted in the crankshaft positioning table in a sliding and inserting mode.

The pressing and positioning unit comprises a pressing bolt 11 and a pressing plate 8, wherein the pressing bolt penetrates through the pressing plate and is in threaded connection with the crankshaft positioning table, and a nut of the pressing bolt is supported on the top surface of the pressing plate in a pressing mode; the two ends of the pressure plate are provided with positioning cambered surfaces 12 matched with and supporting the periphery of the crankshaft, and the bottom surfaces of the two ends of the pressure plate are pressed on the protruding parts of the periphery of the crankshaft.

The side positioning unit comprises a positioning bolt 10 and a positioning block 9, wherein the positioning bolt penetrates through the positioning block and is in threaded connection with the side wall of the crankshaft positioning table; one side of the positioning block is pressed and supported by a nut of the positioning bolt, and the other side of the positioning block is matched with the side wall of the crankshaft positioning table to position the T-shaped positioning block.

A pin hole 13 which is penetrated through in the horizontal direction is formed at the top of the inserted link, and a positioning pin is inserted in the pin hole; one end of the positioning pin is inserted and positioned with the protruding part of the crankshaft.

To more clearly illustrate the embodiments of the present invention, an example is provided below:

the utility model discloses a bent axle four-axis bores location frock for double-end hole, peg graft many bent axles of location simultaneously through bent axle location platform, it is radial spacing in the locating hole of week to add man-hour bent axle peg graft, the protruding portion of bent axle passes through locating pin and inserted bar rigid coupling and then the spacing bent axle of circumference, last clamp bolt provides the holding down force for the clamp plate, make the clamp plate pressfitting carry out axial positioning on the top surface of bent axle protruding portion and to the bent axle, and the location cambered surface laminating at the clamp plate both ends is in the periphery of bent axle axostylus axostyle, the area of contact of increase clamp plate and bent axle periphery, the bent axle takes place to swing and then produces drilling error when avoiding both ends drilling.

The parts of the utility model which are not described all adopt the mature products and the mature technical means in the prior art.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. The utility model provides a bent axle four-axis bores double-end hole and uses location frock which characterized in that: the crankshaft positioning device comprises a turntable and a T-shaped positioning block, wherein one end of the T-shaped positioning block is fixedly arranged on the side wall of the middle part of the turntable, the T-shaped positioning block and the axis of the turntable are arranged in a collinear way, and the other end of the T-shaped positioning block extends along the horizontal direction to form a crankshaft positioning table; the middle part threaded connection of bent axle locating platform has the pressfitting locating element of axial positioning bent axle, and threaded connection has the side locating element of fixed T type locating piece on the lateral wall of bent axle locating platform, and the epaxial location hole that has a plurality of axial link up and radial positioning bent axle of making out of this bent axle locating platform, and the slip grafting has the inserted bar of a plurality of circumference location bent axles on the bent axle locating platform.

2. The positioning tool for the double-headed hole of the crankshaft four-shaft drill according to claim 1, characterized in that: the pressing positioning unit comprises a pressing bolt and a pressing plate, wherein the pressing bolt penetrates through the pressing plate and is in threaded connection with the crankshaft positioning table, and a nut of the pressing bolt is supported on the top surface of the pressing plate in a pressing mode; the two ends of the pressure plate are provided with positioning cambered surfaces matched with and supporting the periphery of the crankshaft, and the bottom surfaces of the two ends of the pressure plate are pressed on the protruding parts of the periphery of the crankshaft.

3. The positioning tool for the double-headed hole of the crankshaft four-shaft drill according to claim 1, characterized in that: the side positioning unit comprises a positioning bolt and a positioning block, wherein the positioning bolt penetrates through the positioning block and is in threaded connection with the side wall of the crankshaft positioning table; one side of the positioning block is pressed and supported by a nut of the positioning bolt, and the other side of the positioning block is matched with the side wall of the crankshaft positioning table to position the T-shaped positioning block.

4. The positioning tool for the double-headed hole of the crankshaft four-shaft drill according to claim 1, characterized in that: a pin hole which is communicated in the horizontal direction is formed in the top of the inserted link, and a positioning pin is inserted in the pin hole; one end of the positioning pin is inserted and positioned with the protruding part of the crankshaft.