SU1342618A1 - Jaw mandrel - Google Patents

Abstract

The invention relates to the field of metalworking and can be used when attaching parts to machine tools. The purpose of the invention is to increase the reliability of the mandrel by eliminating the jamming of the cams when removing the sleeve. A sleeve 7 and a ring 6 are installed in the housing 1. The jaws 8 are installed in the radial grooves of the sleeve 7. The plungers 17 are installed in the openings of the housing 1, which interact with the inclined grooves of the rod 18. In the axial holes of the jaws 8, a pusher 9 is installed with keys 11 with oblique cuts a, which are in contact with the inclined surface of the cam holes 8. Before changing the sleeve 7, the rod 18 moves to the right, the plungers 17 under the action of the ring spring 19 are displaced to the center, and the sleeve 7 is removed, which is removed from the centering part of the body 1, and in its place t new required size. The presence of the pushers 9 with the key 11 allows the cams 8 to be in the extended position when the sleeve 7 is removed, so they do not interfere with the change of the sleeve 7. 3 Il. f (L 2 / Rig 1

Description

This invention relates to processing; and can be used for grinding metal during machining on machine tools.

The purpose of the invention is to increase the reliability of the mandrel by eliminating the jamming of the cams when removing the sleeve.

FIG. 1 shows the mandrel, section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

In the cylindrical neck of the cam mandrel housing 1, a conical slider 2 is movably placed, using three screws 3, connected to the flange 4 tons 5. A replaceable sleeve 7 is placed on the centering conical section of the housing 1 and the ring 6, in the radial grooves of which the cams can be moved 8. In the axial bores of the cams 8 and the bushings 7, the pushers 9 are placed spring-loaded with springs 10. A key 11 fixed to the pusher 9 has an oblique cut designed to interact with the inclined surface 12 in the cam bore 8. Springs 13 with one end attached to the pin 1, the other to the cylindrical shanks of the screws 15. In the sleeve 7 there is an annular groove 16 of angular section. The plungers 17 mounted in the holes of the housing 1 have inclined ends, one of which is designed to interact with the groove of the groove 16 and the other with inclined grooves of the stem 18. The plungers 17 are enclosed by an annular buckle 19, the pins 20 prevent them from turning. 1 also shows the fixed part 2.

Kulachkov mandrel works as follows.

After installation of the fixed part 21 on the mandrel of the ha 5, moving to the right (Fig. 1), the cams 8 are moved apart by means of a co ical slider 2. The cams 8 are constantly pressed against the conical surface of the slider 2 by springs 13. When the cams 8 are ejected, the part 21 is fixed is. Moving the rod 5 to the left, the part 21 is fastened.

If the need arises to fasten the part 21 with another 5pas size; the orifice in the mandrel, the sleeve 7 with the cams 8 is replaced by another

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tipol p p. that r; -; iii mande from;: igtem1 1 vnpniin. OTXo / U T Opp. 11. R. PZH1. ; H | 1 by the ring-shaped loop of npvwi Ki, with tserggru, og-11 1G ozh; 1, g1 Manipool T (L), service v; Hn: i; u: i, glass (not shown), capture KTV.IKV / and remove it from the base of the conical section (body section 1 ku: 7-axle holder. Sleeve 7 should be placed in a special magazine. 1 pushers 9 under demounting: springs 10 l. Are left-handed (in Fig. 1), and ip 11, with their oblique cut, press on the inclined pitch; 1, t 12. The cams 8 move out and are at xpaHeHvni in this position. In a terrible way, the cams 8 do not there will be 11 1 ng tgtg1plt nadviglnn) hubs 7 m body 1 op-paBKtr. A new sleeve of the required size is removed from the magazine and transferred by means of a manipulator to the mandrel. The rod 18 otkh (1L, it n. A thing, the plungers 17 are advanced and with their personal ends they press on the bevel of 16 sleeves 7. The very same sleeve 7 is securely fixed to the body 1 of the mandrel. The thrusters 9 abutted on ToptMi, bodies 1 0 of the mandrel, retract, compressing the spring 10 to the right (in Fig. 1), releasing the cams 8. KyjT; i4K () Ha.4 ogravka g oiaa to work. Formula and 3 (J C, p e te n and

1 ulachkova mandrel, nl case which is located vtuggsa with. usganov1) mi in the stepped holes of the spring-loaded - pushers and plungers with bevels on the ends and placed in the radial chalas the spring-loaded cam, and the intent to gmi to interact with the conical shunt Since it is equipped with an IKTOKOM with inclined grooves and zl.k11eple1P {on the surface of the pushers and with oblique shears, on the inner surface of the sleeve, an axial slit is made on the inner surface of the sleeve, and in the cams, axial ; i: i are rotated with nouc-pxHoc f mp, which are equipped with pushers, nich cut sections dowers P1) are designed to interact with} one of the inclined surfaces of the cc-Hhix cam holes, and the end CKOCL4 n / huncherop - with the surface of the angular groove 1 of the flanks g side and nak: kinemi grooves rod - on the other.

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Claims (1)

Claim A cam mandrel, on the case of which there is a sleeve with other pushers installed in the stepped openings of the spring, and plungers with bevels at the ends and spring-loaded cams designed for interacting with the conical slider in radial manholes, designed to interact with the conical slider the fact that, in order to increase the reliability of operation of the mandrel 45, it is equipped with a rod with inclined grooves and keys with an oblique cut fixed to the surface of the pushers, an angular groove is made on the inner surface of the sleeve, and stems holes na50 clones surfaces n which are mounted pushers, the oblique sections tongues intended to interact with the inclined surfaces of the axial bores of the cams and plungers Mechanical bevels - with the angular surface of the sleeve groove on one side and inclined grooves on the other shaft.