SU1342615A1 - Safety chuck - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used on drilling and other machines when cutting threads. The aim of the invention is to improve the reliability of the cartridge in operation due to the possibility of escaping from the contact of the conical surfaces when the tool is overloaded during thread cutting. The cartridge includes a housing 1, frictionally coupled to the tap holder 2 by means of conical surfaces. The tail part of the tap holder has the shape of a truncated cone 4, the larger base 5 of which faces the direction opposite to the socket 3 under the tool. The contact between the conical surfaces is provided by the elastic TjieMCHTOM 8, which is affected by the adjusting screw 6. When the cutting force on the tap is exceeded, the tail part of the tap holder, moving the cartridge axis along the axis, comes out of contact with the inner conical surface of the body, preventing the tool from breakage, 1 sip. "CL SP

Description

The invention relates to engineering and can be used on drilling and other machines for threading.

The purpose of the invention is to increase the reliability of the cartridge operation due to the possibility of escaping from the contact of the conical surfaces when the tool is overloaded during thread cutting.

The drawing shows a cartridge, longitudinal section.

The cartridge includes a housing 1 and a tap-holder 2 with a socket 3 for a search. The tail part of the tabernacle is made in the form of a truncated cone 4, the larger base 5 of which is facing the opposite direction relative to the tool slot, and is installed in the response mastic of the housing 1.

In the housing 1 coaxially with the tapered hole is set the adjusting screw 6 and in contact with the bo. On the base of the truncated cone, the supporting element 7. An elastic element 8 is installed between the adjusting screw 6 and the supporting element 7.

O-ring 9 is designed to protect the friction surfaces from getting dirt on them.

During the operation of the cartridge, when the cutting tool stops at the bottom of the blind hole or as a result of increasing the load of a specified limit value, the tap holder 2 mixes in the axial direction (within the limits of the desorption of elastic elements) and the breaker1P1e force center Composer A.Sapenok Editor E. Papp Tehred L. Serdyukov. Corrector M. Sharoshi

Order 4551/9 Circulation 97A Subscription

VNIIGSH of the USSR State Committee

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

Production and printing company, Uzhgorod, st. Project, 4

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pi The tap holder with the tool stops rotation, friction of the working surfaces of the friction assembly, and, consequently, their wear, is practically absent. Thus, due to the shift of the tamper holder to the right along the axis due to compression of the elastic element between the friction conical surfaces, a gap arises that allows the body of the cartridge to rotate while the holder is stationary, which eliminates premature wear of the parts of the cartridge and prevents jamming of the friction surfaces, preventing the cutter from breaking. tool and cartridge.

Claims (1)

Invention Formula A safety cartridge containing a housing and a tap holder with a tool socket, which are frictionally interconnected by means of conical surfaces, so that, in order to increase the reliability of operation of the cartridge, the tail portion of the holder a truncated cone, the larger base of which faces in the direction opposite to the socket for the tool side, and is installed in a reciprocal conical hole made in the housing, while the cartridge is equipped with an adjusting screw, resilient and supporting elements, the supporting element being installed with the possibility of contacting a large base of the truncated cone, and an elastic element between the adjusting screw and the supporting element.