CS257371B1 - Collet chuck - Google Patents

Abstract

The solution relates to a collet chuck with an automatically fixed front cover on the base body. The essence of the solution is that in at least one recess formed on the base body, at least one locking segment is arranged radially displaceably, kinematically connected to a slide for engagement with a locking surface formed on the front cover. The subject of the solution allows the front cover to be easily and quickly fixed on the base body and thus prepares the collet chuck for work. In addition, the insertion and removal of the front cover can be carried out automatically using, for example, a handling device. The collet chuck finds application in automated operations.

Description

3 237371

BACKGROUND OF THE INVENTION The present invention relates to a clamp clamp with a removable front lid and solves the fcon-embodiment of the front end of the base body. In the presently used pliers, they are designed primarily in such a way that the front end is fixed on the base body by means of screws, or the front cover is screwed onto the base body. These solutions make it possible to replace the pliers relatively laboriously and the replacement is time-consuming, extending the adjustment times and thus pre-auctioning the production. In addition, such a solution is difficult to automate, especially when it comes to changing collets. There are known solutions allowing to automatically reinforce or release the front end from the base body, however, this requires the interaction of the movement of the handling device and the rotation of the machine spindle, which lengthens the operation cycle automatically.

The aforementioned disadvantages are alleviated by the clamp switch according to the invention, the principle of which is that in at least one recess formed by the base body at least one locking segment is radially displaced with the locking surface formed by the barreled lid. The clamp clamp according to the invention allows for a coherent and relatively simple reinforcement of the front lid with the base body, it is not necessary to rotate the spindle during consolidation or loosening, which in the case of automation saves lost handling times and simplifies the entire replacement cycle. collets.

The clamp clamp according to the invention is shown in the accompanying drawings, wherein FIG. 1 is an example of a clamp fixture in a cross-sectional view, and FIG. 2 is the cross-sectional view of FIG. 1.

The clamp clamp clamp 100 is comprised of a base body 110 in which an ISO clamp 120 is slidably disposed, which is secured by a removable front cover 130 against axial extension from the clamp 100. FIG. The front cover 130 has the shape of a hollow flange, with the inner surface 134 being formed radially locking surfaces 131 in an axial spacing from the face 135, and positioning grooves 132 are formed in the axial shaft. 110, radial recesses 111 are formed in which blocking elements 140 are displaceably disposed in a radial direction. The slide 120 has a T-groove 121 formed in the axial direction on the outer surface 123 that descends into the center of the slide 120 toward its front end122. . In these T-grooves 121, the locking segments 140 are guided by their T-heads 142 so that the axial movement of the slide 120 results in a radial movement of the locking segments 140 which, with their engagement surfaces 143, are arranged for co-engagement with the locking surfaces 131 of the front cover 130. 113 of the base body 110, positioning elements 112 for positioning grooves 132 of the front cover 130 are provided. The reinforcement of the head 130 itself on the base body 110 is as follows:

When the slide 120 is in the rear position, the locking segments 140 are inserted below the perimeter 113 of the base body 110. A tine 150 is inserted into the clamp 100. The front cover 130 is then inserted into the base body 110 while the elements 112 are inserted into the positioning grooves 132. The front cover 130 engages the tensile surface 133 on the face cone 151 of the tongue 150, and a force stroke is performed by the slide 120 to move the locking segments 140 into engagement with the locking surfaces 131 and thereby facing the face. 130 is provided axially on base member 110. The force stroke residue is formed by the clamp-release stroke " a " of the slide 120. In FIG. 2, the arrangement of the elastic members 141 between the locking segment 140 and the base body 11-0 is provided. by moving the locking segments 140 over the base 113 of the base body 110. By reverse movement of the slide 120, the locking segments 140 abut the base body 110 and the front cover 130 can be easily slid off the base body 110.

Claims (3)

SUBJECT A collet chuck comprising a base body attached to a machine tool spindle, a sliding slide mounted therein operated by a three-position force device, a removable collet and a removable front cover for axially securing a collet in a collet chuck characterized in that at least one recess (111) at least one locking segment (140) kinematically coupled to the slide (120) for engaging a locking surface (131) formed on the end cap (130) is radially displaced by the base body (110). invention A collet chuck according to claim 1, characterized in that a positioning element (112) for engaging a positioning groove (132), e.g. at the front end (130). A collet chuck according to claim 1 or 2, characterized in that at least one spring element (141) is provided between the locking segment (140) and the base body (110), e.g. spring. 2 sheets of drawings 237371 FIG. 2 · 4 Υ 1989 Corrections in the printed descriptions of the invention In the printed description of the invention for copyright certificate no. 257 371 (PV 8066- 86), picture no. 2 of description no. 257 354.