RU1830305C - Device for tool clamping in drilling chuck - Google Patents

Abstract

Usage: mounting the axial tool in the drill chuck. SUMMARY OF THE INVENTION: the device comprises a support 1 in the form of a fork in which a key 3 with a handle 4 is mounted. The key has a bevel gear 5 and a cylindrical protrusion b at the end, respectively designed for engagement with teeth on the end face of the cartridge sleeve and placement in a radial hole 9 its housing 10. At the ends of the support diametrically opposite mounted on the hinges 12 are the same arcuate brackets 13, designed to cover the outer surface of the housing of the cartridge. The brackets 13 contain latches 14 designed to interact with the corresponding radial holes 9 in the cartridge housing, and a handle 15.2 of sludge is made on the free end of each bracket 13.

Description

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The invention relates to the field of machine tool engineering and can be used to secure an axial tool in a drill chuck.

A device for clamping a tool in a drill chuck is known, comprising a key located in a support with a bevel gear and a cylindrical protrusion at the end, respectively designed for engaging with teeth on the end of the cartridge sleeve and placing it in the radial hole of its body, and an arcuate bracket pivotally connected to the support designed to interact with the outer surface of the cartridge housing.

The disadvantage of this device is its low reliability due to its unstable position during operation.

The purpose of the invention is to increase the reliability of the device by ensuring the stability of its key,

In FIG. Figure 1 shows a general view of the fixture mounted on a drill chuck: Fig. 2 is a top view, in section, of the chuck body along its radial holes.

The tool holder in the drill chuck comprises a support 1 in the form of a fork, in the hole 2 of which a key 3 with a handle 4 is mounted for rotation. The key includes a bevel gear 5 and a cylindrical protrusion 6 at the end, respectively designed for engagement with the teeth 7 at the end of the cartridge sleeve 8 and placed in the radial hole 9 of its housing 10. From axial movement, the key 3 is limited by a pin 11 installed in its body, and the possibility of its free rotation is provided by a length parallel to one hundred it supports 1, which in this case bears against them via line and (2) At the cartridge housing. The free ends of the support 1 are diametrically opposite and the same arcuate brackets 13 are mounted on the hinges 12, which are designed to interact with the cartridge case 10 by covering its outer surface. In this case, the arcuate brackets contain clamps 14, each of which is mounted on the inner surface of the bracket and is designed to interact with the corresponding radial hole 9 in the cartridge case, and at the free end of each bracket are made handles 15, which preferably extend beyond the cartridge zone.

The device works as follows.

The support 1 with pre-diluted arcuate brackets 13 is installed on the outer surface of the housing 10 of the cartridge, the reference cylindrical protrusion 6 of the key 3 along one of the holes 9 of the housing. In this case, the protrusion b enters the hole 9 until the highlanders stop on the parallel sides of the support 1 along the line a in the cartridge case 10, which ensures free, without distortions, rotation of the bevel gear 5 of the key in the support fork. At the same time, the gear 5 of the key engages with the teeth 7 of the cartridge sleeve 8, which rotates around the cartridge case 10. After that, the arcuate brackets 1.3 are reduced towards each other, covering the cartridge housing, and the latches 14, while falling into the radial holes of the housing, additionally lock the fixture with a key on said cartridge housing. Further, holding the device by the handles 15 with a slight force P (Fig. 2) with one hand, with the other hand, turn the key 3 by the handle 4, rotate the sleeve 8 around the housing 1.0. which is coupled to a clamping mechanism (not shown) of the cam jaws 16, whereby the axial tool 17 is clamped or pushed in rotation to the other side in the cam jaws. After clamping the tool in the chuck, the brackets 13 are pulled to the sides and the fixture with the key is removed from the chuck, which is already ready for operation. The tool is removed from the chuck by the tool in the reverse order.

The device is suitable for standard cartridges according to GOST 8522 - 79, it does not provide for the installation of standard keys with a bevel gear, it is simple in design and convenient to use, combines simultaneous holding on the cartridge and stable fixation of the position of the gear of the key relative to the teeth of the cartridge sleeve, increasing reliability and their durability, safety and ease of maintenance of drill chucks.

Claims (1)

SUMMARY OF THE INVENTION A device for clamping a tool in a drill chuck, comprising a key located in a support with a bevel gear and a cylindrical protrusion at the end, intended for engaging with teeth on the end face of the cartridge sleeve and locating an arcuate joint pivotally connected to the support a bracket for engaging with the outer surface of the cartridge housing, characterized in that. in order to increase the reliability of operation, the device is equipped with a second diametrically opposite and pivotally connected to the support by an arched radial hole in the body bracket, as well as two retainer-se of the cartridge, the support being made in mi, each of which is mounted on a fork, and on the free end of each a handle is made on the inner surface of the bracket and the pre-bracket, assigned to interact with compliance-5 t I fifteen i % TT 8  / L f 4 -, ..-: .- ---- | J i j w & 1 Figure 1