SU1313577A1 - Self-aligning chuck - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used to fasten a tool on boring and drilling machines. The aim of the invention is to expand the technological capabilities of the cartridge by using it when machining holes with increased skews and axial displacements relative to the spindle axis. This goal is achieved by the fact that two shoulders levers 8 with outer and inner conical surfaces on one of the shoulders mounted on a retainer 4 located in the shank 1, moving under the action of axial cutting forces, interact with the tapered surface of the nut 9 mounted on the shank and open, allowing the tool holder 6 to be mounted along the machined hole axis. 1 il. (L 8: oh con

Description

The invention relates to mechanical engineering and can be used to fasten a tool on boring and drilling machines.

The purpose of the invention is to expand the technological capabilities of the cartridge by using it when machining holes with increased skews and axial displacements relative to the spindle axis.

The drawing shows a self-aligning cartridge, a longitudinal section.

The cartridge contains a shank 1 with a conical surface 2 formed on it and spring-loaded spring 3 installed in it and a sub-holder 4 in contact through the ball 5 with the tool holder 6, while on the holder. 6 is made b urt.

On axis 7, two shoulders 8 levers 8 with outer and inner conical surfaces are installed on one of the arms of each arm, and the other arms of the levers have jaws designed to interact with the tool holder 6. On the shank mounted nut 9 with an internal conical surface. In order to transmit the torque, the shank 1 is equipped with fingers 10 in contact with the carriers 11 on the tool holder 6.

The cartridge works as follows.

In the initial position, the spring 3 through the bolster 4 and the ball 5 acts on the tool holder 6, pressing it with the outer end surface of the collar to the inner end surfaces of the double-arm jaws 8, while the cylindrical surface of the tool holder next to the shoulder is covered with jaws 8 and they are held coaxially with the axis of rotation of the shank 1.

Compiled by A.Shein Editor A.Ogar Tehred.Hodanich Corrector M.Sharoshi

Order 2161/11 Circulation 976 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, ul, Proektna, 4

ABOUT

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When the hole is machined by the axial component of the cutting force 4, the levers 8 connected to it through the axis 7 move to the extreme left position, compressing the spring 3, while the outer conical surfaces of the levers enter the conical undercut of the nut 9. Enter into the conical undercut the nuts, levers 8 rotate from on axis 7, and open, allowing the tool holder 6 to be mounted along the axis of the hole to be machined.

At the end of processing, the cartridge is returned to its original position, while under the influence of the spring 3, the substitute 4 with the double-arm levers 8 moves to the right to failure and the levers 8, turning on the axis 7, install the tool holder 6 coaxially with the machine spindle (not shown).

Claims (1)

Invention Formula A self-aligning tool holder containing an instrument holder with a collar and an orientation mechanism associated with a podported bolster located in the shank in contact with the tool holder — through a ball, characterized in that, in order to expand technological capabilities, the orientation mechanism is made in the form of two-arm levers mounted on a sub-tick, with outer and inner conical surfaces on one of the arms of each, while the inner conical surfaces of the levers are designed for l interaction with the conical surface made on the shank, and the external ones - with the conical surface of the nut inserted in the device, located on the shank.