CN203599888U

CN203599888U - Inner ring centering clamp

Info

Publication number: CN203599888U
Application number: CN201320833796.XU
Authority: CN
Inventors: 顾树伟
Original assignee: CHANGZHOU KEXIE SPEED MANUFACTURE Co Ltd
Current assignee: CHANGZHOU KEXIE SPEED MANUFACTURE Co Ltd
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2014-05-21
Anticipated expiration: 2023-12-18

Abstract

The utility model provides an inner ring centering clamp which comprises a fixed base plate, a locating plate, a jacking ring, a jacking sleeve and a locking screw. A protruding cone is designed in the middle of the locating plate, and a threaded hole is formed in the axial direction of the cone. The jacking ring is composed of three identical pieces, the three separated pieces are contracted together through an elastic ring, and the toroidal face of the outer ring of the jacking ring and the inner ring of a workpiece are assembled. The locking screw penetrates through the jacking sleeve and an inner hole of the jacking ring and is assembled with the threaded hole of the cone, the locking screw jacks the jacking ring on the cone of the locating plate through the jacking sleeve, and the three pieces of the jacking ring are opened to jack the workpiece. The clamp is used on a machine tool, locating is carried out with the inner ring of the workpiece as the standard, the outer ring of a shaft part or a ring part can be formed through one-time machining, more convenience is achieved, and meanwhile machining precision is higher.

Description

Inner ring centralizer

Technical field

The utility model relates to clamp technology field, is specifically related to a kind of inner ring centralizer.

Background technology

Fixture is mainly to use on lathe, to be used for workpiece to position the parts of assembling.Triangle chuck is the centralizer on we often use, and triangle chuck adopts three points centering principle, simple in structurely easy to usely can carry out well location centering to axial workpiece.But triangle chuck is by the outer axial face of axle class or ring parts is positioned part is processed, but usually need to be used as datum level with endoporus at the part much with inner hole structure, at this moment locate processing by outer axial face and will cause larger mismachining tolerance.And cannot carry out time processing to the outer axial face of axle class or ring parts while using triangle chuck to position, need to first process after the half of outer axial face, then use this half outer axial face to process second half for locating surface, process is loaded down with trivial details, and mismachining tolerance is larger.

Summary of the invention

For above problem, the utility model provides a kind of inner ring centralizer easy to use simple in structure.

The utility model solves the technical scheme that its technical problem adopts: this inner ring centralizer comprises fixed underpan, positioning disk, holds out against ring, top cover, lock-screw; Described fixed underpan hollow disc-shape in the middle of being, described positioning disk is assemblied in the centre position of described fixed underpan, is designed with the cone of protrusion in the middle of described positioning disk, described cone be axially processed with screwed hole; The described ring that holds out against is for three identical compositions, by elastic ring, three of separating are contracted in together, the described inner ring that holds out against ring is designed with the bellmouth of assembling corresponding to described cone, described in hold out against ring outer ring be anchor ring, described in hold out against ring outer ring anchor ring assemble mutually with workpiece inner ring; Described lock-screw passes top cover and holds out against ring endoporus and assembles mutually with the screwed hole of described cone, and described lock-screw holds out against on the cone of described positioning disk holding out against ring by described top cover, and three that described in making, hold out against ring strut workpiece pre-tightening.

As preferably, hollow in the middle of described fixed underpan be ring ladder structure, and described positioning disk forms circular trough afterwards with fixed underpan assembling.

As preferably, hold out against on the outer ring of ring and be designed with cannelure, described elastic ring is assemblied in described cannelure.

As preferably, on the annular contact surface of described positioning disk and described fixed underpan, be designed with three or three above uniform pins.

The beneficial effects of the utility model are: this inner ring centralizer uses on lathe, by the inner ring of axle class or ring parts is carried out to fastening location; Described in first workpiece to be processed being placed on by its inner ring before location, hold out against on ring, tighten described lock-screw by mistake and hold out against ring described in promoting and slide along the cone on positioning disk, hold out against three of ring and be separated from each other outside expansion described workpiece inner ring location is held out against.So just lathe for machining is positioned take the inner ring of workpiece as benchmark by this fixture, can time processing moulding to the outer ring of axle class or ring parts, more convenient, machining accuracy is also higher simultaneously.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of this inner ring centralizer and workpiece assembling.

Fig. 2 is the three-dimensional explosive view of this inner ring centralizer and workpiece assembling.

Fig. 3 is the three-dimensional explosive view of reverse side direction of this inner ring centralizer and workpiece assembling

The specific embodiment

Below in conjunction with embodiment, the utility model is further illustrated:

As shown in Figure 1, Figure 2 with Fig. 3 in shown in embodiment, this inner ring centralizer, it comprises fixed underpan 1, positioning disk 2, holds out against ring 3, top cover 4, lock-screw 5; Described fixed underpan 1 is middle hollow disc-shape, described positioning disk 2 is assemblied in the centre position of described fixed underpan 1, in the middle of described positioning disk 2, be designed with the cone 21 of protrusion, described cone 21 be axially processed with screwed hole, described screwed hole is through hole; The described ring 3 that holds out against, for three identical abscission ring compositions, is contracted in three of separating together by elastic ring 6, and described elastic ring 6 uses elastomeric material to make, and is enclosed within on the outer ring surface of described three abscission rings composition.Described ring 3 the inner ring that holds out against is designed with and the bellmouth of the corresponding assembling of described cone 21, described cone 21 with described in hold out against and encircle 3 bellmouth and adopt identical tapering, the tapering of the two is 60 ° in this embodiment.It is described that to hold out against ring 3 outer ring be anchor ring, described in hold out against ring 3 outer ring anchor ring assemble mutually with workpiece 7 inner rings; Described lock-screw 5 passes top cover 4 and holds out against ring 3 endoporus and assembles mutually with the screwed hole of described cone 21, described lock-screw 53 holds out against on the cone 21 of described positioning disk 2 holding out against ring by described top cover 4, holds out against three of ring 3 and strut workpiece 7 is held out against described in making.

This inner ring centralizer uses on lathe, connects by fixed underpan 1 lathe, and this fixture in use, carries out fastening location to the inner ring of axle class or ring parts; In the embodiment shown in Fig. 1, Fig. 2 and Fig. 3, the workpiece 7 of generation processing is the middle wheel disk shape that is processed with inner ring.Specifically adding man-hour, described in first workpiece to be processed 7 being placed on by its inner ring, hold out against on ring 3, tighten described lock-screw 5 by mistake and promote described top cover 4 together with holding out against ring 3 basal slidings along from the cone 21 on positioning disk 2 to cone, hold out against three of ring 3 and be separated from each other outside expansion described workpiece 7 inner rings location are held out against.So just lathe for machining is positioned take the inner ring of workpiece 7 as benchmark by this fixture, this fastening locate mode, the outer ring time processing moulding that can be used for to axle class or ring parts, more convenient, workpiece 7 machining accuracies that need to position with inner ring for some higher simultaneously.

As shown in Figure 1, Figure 2 and Figure 3, described fixed underpan 1 the hollow of centre is ring ladder structure, be three grades of ladders specifically, the height of described positioning disk 2 is identical with the second layer ladder height in the middle of described fixed underpan 1, the race diameter of described positioning disk 2 with described in to state the ring surface diameter of the second layer ladder in the middle of fixed underpan 1 identical, after described like this positioning disk 2 and fixed underpan 1 assembling, its front and back end all forms circular trough.Facilitate the assembling of described fixed underpan 1 on lathe, and the location of the relatively described fixed underpan 1 of workpiece 7, positioning disk 2.On the annular contact surface of described positioning disk 2 and described fixed underpan 1, be designed with three or three above uniform pins 8.Described pin 8 can, by described positioning disk 2 is positioned, prevent its rotation.

As shown in Figure 1, Figure 2, Figure 3 shows, described in hold out against on ring 3 outer ring and be designed with cannelure, described elastic ring 6 is assemblied in described cannelure.Described like this elastic ring 6 can be placed in described cannelure completely, more convenient while installing and using.

Claims

1. an inner ring centralizer, it comprises fixed underpan (1), positioning disk (2), holds out against ring (3), top cover (4), lock-screw (5); It is characterized in that: described fixed underpan (1) is middle hollow disc-shape, described positioning disk (2) is assemblied in the centre position of described fixed underpan (1), be designed with the cone (21) of protrusion in the middle of described positioning disk (2), described cone (21) be axially processed with screwed hole; The described ring (3) that holds out against is three identical compositions, by elastic ring (6), three of separating are contracted in together, the described inner ring that holds out against ring (3) is designed with the bellmouth with the corresponding assembling of described cone (21), the described outer ring that holds out against ring (3) is anchor ring, described in hold out against ring (3) outer ring anchor ring assemble mutually with workpiece (7) inner ring; Described lock-screw (5) passes top cover (4) and holds out against ring (3) endoporus and assembles mutually with the screwed hole of described cone (21), described lock-screw (5) will hold out against ring (3) by described top cover (4) and hold out against at the cone (21) of described positioning disk (2) above, hold out against three of ring (3) and strut workpiece (7) is held out against described in making.

2. inner ring centralizer according to claim 1, is characterized in that: hollow in the middle of described fixed underpan (1) is ring ladder structure, after described positioning disk (2) and fixed underpan (1) assembling, forms circular trough.

3. inner ring centralizer according to claim 1, is characterized in that: described in hold out against on the outer ring of ring (3) and be designed with cannelure, described elastic ring (6) is assemblied in described cannelure.

4. inner ring centralizer according to claim 2, is characterized in that: on the annular contact surface of described positioning disk (2) and described fixed underpan (1), be designed with three or three above uniform pins (8).