SU1678548A1 - Tool chuck - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to lock a tool, for example, when drilling holes in sleepers followed by tightening the sleepers with screws. The aim of the invention is to simplify the design of the cartridge. The cartridge includes a housing 1 with an axial base hole 4 under the tool shank and a square-shaped socket 3 aligned with it to mate with a counterpart on the tool shank. On the case there is a sleeve 5 with a window 6, identical in shape and size to the socket 3 in the f case. Through the protrusion 7 and the annular groove on the housing, the sleeve 5 is connected with it rotatably and secured against movement in the axial direction. For the passage of the protrusion 7 into the annular groove on the housing there is also a longitudinal groove. To fix the sleeve in the angular position, a spring-loaded latch 10 is used. To install the tool in the housing, the sleeve 5 is rotated to align the window profiles and the socket. After installing the instrument, it is rotated through an angle of 45 °. and fix the latch. In this case, the inner end surface of the sleeve locks the tool in the housing and the cartridge can be used for drilling. 5 il. SL Os 4 00 SL 4 00 11

Description

PM 2

The invention relates to mechanical engineering and can be used to fasten a tool, for example, when drilling holes with subsequent tightening of the sleepers with screws.

The purpose of the invention is to simplify the design of the cartridge.

FIG. 1 shows the cartridge, a general view; in fig. 2 - the same, in axial section; in fig. 3 - the same view from the installation tool; in fig. 4 - tool shank; in fig. 5 - interchangeable nozzle for a tool with a stationary shank.

The chuck body 1, which is made in one piece with the shank 2, is provided on the installation side of the tool with a square socket 3 and a base hole 4 for accommodating the square and circular portions of the tool shank shown in FIG. 4. The cartridge case 1 is rotatably mounted with a grooved sleeve 5, which has a square-shaped window 6, the nominal size of which coincides with the square of the socket 3 to ensure free passage of the square part of the tool shank when installing or removing the latter. A protrusion 7 is provided in the rear part of the sleeve 5, designed for its bayonet engagement with the body of the cartridge 1, for which longitudinal and annular grooves are provided in this case, respectively, for passage and placement of the protrusion 7 (not shown). On the rear part of the housing 1 there is a guide groove 8 for accommodating the spring 9 and the latch 10, which can cooperate with the groove at the end of the sleeve 5 to prevent it from turning in the position of the tool fixing in the cartridge case. The cylindrical nut 11 is designed to support the spring 9, which presses the latch 10 to the end of the sleeve 5.

If it is necessary to use a tool with a tapered shank (provided for by the standard), a square nozzle 12 (Fig. 5) is used with a tapered bore 13 into which the tool shank held in the nozzle by friction is inserted. Thanks to the nozzle 12, the size of the square which corresponds to the size of the square box in the sleeve 5 and the socket 3 cartridge, its application can become universal.

The chuck works as follows: To install a tool (drill, tap, etc.) in the chuck, you must first align the squares of the window b

5 to the sleeve 5 and the square socket 3 of the housing 1, which is achieved by simply turning the sleeve 5. If the sleeve 5 is in the locked position, then press the latch 10 out of the sleeve groove, ensuring rotation of the latter. After installing the tool shank (Fig. 4) so that its cylindrical end 14 is located at the hole 4, and the square part 15 is in the socket 3, turn the sleeve 5 at an angle of 45 ° until the latch hits

15 10 into the groove at the end of the sleeve 5. Turning the sleeve 5 into the indicated position changes the mutual arrangement of the window in the sleeve and the sockets in the housing, and the inner face surface in the sleeve locks the square

20 piece on the shank of the tool in the housing slot.

To release the tool, you need to squeeze the latch 10 and turn the sleeve 5 back 45 ° to align

Claims (1)

25 squares of window 6 and socket 3 and remove the tool shank from the cartridge. Claims for fastening a tool, comprising a housing with an axial base hole for the tool shank and a socket coaxial with it at the end, designed to secure the tool against twisting by means of a mate with counterpart made on it, and mounted on 35 housing can be rotated and fixed from axial movement of the sleeve with a window identical in shape to the socket in the housing and an internal end surface designed to interact with the front end surface of said counterpart on the tool, characterized in that, in order to simplify the design , the socket at the end of the body is square in shape, with the rear 45 of the sleeve part is made of an internal radial protrusion, and on the outer surface of the housing — longitudinal and annular grooves, intended respectively for passage and placement of said protrusion, 50 with the cartridge fitted with a guide groove mounted in the completed housing, a latch spring-loaded in the direction of the sleeve, designed to cooperate in the position of fastening the tool55 with the groove made on the end of the sleeve.