CN203471083U

CN203471083U - Inner centering tensioning clamp

Info

Publication number: CN203471083U
Application number: CN201320485463.2U
Authority: CN
Inventors: 付国祥
Original assignee: NEIJIANG SHENZHOU ELECTROMECHANICAL EQUIPMENT CO Ltd
Current assignee: NEIJIANG SHENZHOU ELECTROMECHANICAL EQUIPMENT CO Ltd
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2014-03-12
Anticipated expiration: 2023-08-09

Abstract

The utility model discloses an inner centering tensioning clamp. The inner centering tensioning clamp comprises a core shaft and an expansion sleeve, the core shaft is provided with a positioning end plate and sleeved with the core shaft, and conical surfaces which are matched with each other are arranged on the core shaft and the expansion sleeve. The inner centering tensioning clamp is characterized in that the core shaft is provided with a spherical nut through a thread, the expansion sleeve is located between the positioning end plate and the spherical nut, and a spherical gasket is arranged between the spherical nut and the expansion sleeve. The inner centering tensioning clamp serves as an improvement, the expansion sleeve comprises a plurality of expansion blocks which are evenly distributed in the circumference at intervals, and the expansion blocks are connected through rubber. The inner centering tensioning clamp has the advantages of being capable of carrying out automatic correction and large in deformation, and the positioning precision and the tensioning effect can be improved.

Description

A kind of distention related to the heart clamper decided at the higher level but not officially announced

Technical field

The utility model relates to a kind of distention related to the heart clamper decided at the higher level but not officially announced, especially for the distention related to the heart clamper decided at the higher level but not officially announced of gear grinding processing.

Background technology

At present, for the distention related to the heart clamper decided at the higher level but not officially announced of gear grinding processing, comprise be provided with locating end plate mandrel, be placed on expansion set and nuts and washers on mandrel, mandrel and expansion set are provided with the conical surface cooperatively interacting, expansion set is provided with several sections of groovings uniform on circumference, for expansion set, is out of shape; During use, rotating nut is moving axially to promote expansion set, and the conical surface supports expansion set outward, with the endoporus of swelling workpiece; The shortcoming of this structure is: when 1) nut promotes expansion set, expansion set cannot be proofreaied and correct with respect to the axis of mandrel, be made the position of expansion set be prone to deviation, positioning precision cannot guarantee; 2) deflection of expansion set is little, and expansion set just partly contacts with inner hole of workpiece, and swelling effect is limited.

Utility model content

The purpose of this utility model is for prior art above shortcomings, and a kind of distention related to the heart clamper decided at the higher level but not officially announced is provided, and it has advantages of can automatic calibration, deflection is large, can improve positioning precision and swelling effect.

For achieving the above object, a kind of distention related to the heart clamper decided at the higher level but not officially announced of the present utility model, comprise be provided with locating end plate mandrel, be placed on the expansion set on mandrel, mandrel and expansion set are provided with the conical surface cooperatively interacting, it is characterized in that by screw thread, being provided with spherical nut on mandrel, expansion set, between locating end plate and spherical nut, is provided with spherical washer at spherical nut and expansion set.

The utility model adopts spherical washer and spherical nut, and the cambered surface of the two coordinates automatically calibrating expansion set with respect to the position of mandrel axis, thereby improves positioning precision;

As further improvement of the utility model, described expansion set comprise several on circumference uniform and spaced expansion block, between each expansion block, by rubber, be connected; Deflection between each expansion block is large, and expansion set is with inner hole of workpiece for entirely to contact, and swelling is effective;

As further improvement of the utility model, the abutting end of described expansion set and spherical nut is provided with the shaft shoulder of mutual fastening; Rotate backward spherical nut, can exit expansion set, unclamp workpiece;

In sum, the advantage that the utlity model has can automatic calibration, deflection is large, can improve positioning precision and swelling effect.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model embodiment.

Fig. 2 is the front view of expansion set in Fig. 1.

Fig. 3 is the left view of Fig. 2.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, Figure 2, Figure 3 shows, this distention related to the heart clamper decided at the higher level but not officially announced, comprise be provided with locating end plate 2 mandrel 1, be placed on the expansion set 3 on mandrel 1, mandrel 1 is provided with expansion set 3 conical surface cooperatively interacting, described expansion set 3 comprises six uniform and spaced expansion blocks 4 on circumference, between each expansion block 4, by rubber 5, is connected; On mandrel 1, by screw thread, be provided with spherical nut 6, expansion set 3, between locating end plate 2 and spherical nut 6, is provided with spherical washer 7 at spherical nut 6 and expansion set 3, and the abutting end of described expansion set 3 and spherical nut 6 is provided with the shaft shoulder of mutual fastening;

During use, workpiece 8 is placed on outside expansion set, rotation spherical nut 6 is moving axially to promote expansion set 3, coordinates the conical surface that expansion set 3 is outwards strutted, with the endoporus of swelling workpiece 8; The utility model is owing to adopting spherical washer 7 and spherical nut 6, and the cambered surface of the two coordinates automatically calibrating expansion set 3 positions with respect to mandrel axis, thereby improves positioning precision; Between each expansion block 4 of expansion set 3, be cutting type, the deflection of each expansion block 4 is larger, and expansion set 3 is with workpiece 8 endoporus for entirely to contact, and swelling is effective; Rotate backward spherical nut 6, the shaft shoulder by mutual fastening can exit expansion set 3, unclamps workpiece.

Claims

1. a distention related to the heart clamper decided at the higher level but not officially announced, comprise be provided with locating end plate mandrel, be placed on the expansion set on mandrel, mandrel and expansion set are provided with the conical surface cooperatively interacting, it is characterized in that by screw thread, being provided with spherical nut on mandrel, expansion set, between locating end plate and spherical nut, is provided with spherical washer at spherical nut and expansion set.

2. a kind of distention related to the heart clamper decided at the higher level but not officially announced as claimed in claim 1, it is characterized in that described expansion set comprise several on circumference uniform and spaced expansion block, between each expansion block, by rubber, be connected.

3. a kind of distention related to the heart clamper decided at the higher level but not officially announced as claimed in claim 1 or 2, is characterized in that the abutting end of described expansion set and spherical nut is provided with the shaft shoulder of mutual fastening.