SU448081A1 - Magnetic chuck - Google Patents

Description

The invention relates to the field of identification and can be used in typewriting machines for processing ring rings.

Cartridges are known with a rotating faceplate, carrying magnetic-conducting zones separated by an isolate, and a non-rotating magnetic unit with ring magnets moving in a cartridge case.

The aim of the invention is to increase the reliability and ensure the regulation of the force securing the part on the go.

This is achieved by the fact that the magnetic unit with the chuck body is movable and screwed and rotatable by, for example, gearing a rector - rod with a hydraulically driven rail movement, and the ring magnets are concentric with the axis of rotation of the plate and form annular

POLES of opposite polarity interacting through an air gap with magnetic faceplate areas of the faceplate, also made in the form of concentrically arranged rings with dimensions equal to those of the corresponding ring magnets.

On fig.X presents a constructive scheme of the proposed

0 cartridge in the on position; figure 2 is a section along the a-L in figure 1; on fig.Z - view along arrow B in figure 1 (on position).

The magnetic bagron contains rotating and non-rotating parts separated by air gaps. The rotating part is a faceplate consisting of alternating magnetically conductive I and non-magnetically conductive 2 zones, mounted on the spindle with a 3 nut 4. The magnetic conductor of zone I is made in the form of concentric rings, both ends of which extend to the ends of the expansion plate. The spinning part includes a housing 5 of a cartridge fixedly mounted on the workhead headstock. Inside the fixed housing 5 there is a mavning unit containing permanent magnets 6 and 7 separated by a non-magnetic gasket 8, the magnets are made in the form of concentric rings with dimensions equal to those of zone I shshayayoy, and: face-to-face poles of opposite poles, which are adjacent to the corresponding magnetic-conducting zones I at the end of the bridge through the air gap. The opposite faceplates of the magnets are adjacent to the ring and of the magnetic conductive material. The magnets 6 and 7, the gasket B and the ring 9 are secured in the housing 10 of the magnet unit, rotatable mounted on the multiple-start thread of the second sleeve 12. On the body 10 of the magnetic unit, the cogging sector 13 engages with the rail 14, which simultaneously serves as the rod of the pneumatic cylinder 15 The cylinder 15 and the rod-rod 14 are installed in the body 5 of the cartridge. In the housing 5 is made through the groove 16 at an angle to the axis of the cartridge corresponding to the angle of elevation of the helix thread II. Adjustable rotation stops 17 and 18 are also attached to the housing 5, and a stop 19 mounted on the housing 10 of the magnetic unit is freely accommodated in the groove 16. On the support 19, the handle of the shower of the manual rotation of the magnetic unit can be strengthened. Thread alignment II (right or left) is chosen opposite to the direction of rotation of the faceplate, which prevents the stop 19 from moving away from the rotation limiter 17 during the rotation of the cartridge. To fix the developed product 20, the body 10 of the magneto unit using a hydraulic or pneumatic cylinder 15 through the rod-rod 14 and the toothed sector 13 rotates and moves along a multiple-thread II to the chuck of the cartridge until the stop 19 and the turn limit 17 are in contact. The f (cm, fig. 1) mead of the magnetic block and the faceplate becomes minimal, and the down force of the cartridge is maximal. The size of the gap n, i.e. the clamping force of the cartridge, is adjusted with the help of the rotation limiter 17. In FIGS. 1 and 3, the shooter shows the direction of the magnetic force lines. In order to release the product 20, the stem rod 14 is moved in the opposite direction, and the magnetic unit rotates from the faceplate until the stop 19 comes into contact with the rotation limiter 18. At the same time, the air gap C, see Fig. 3) between the magnetic unit. and the faceplate becomes maximum, and the chuck pressing force is minimal, close to zero, since the magnetic field lines mainly close through the gap // o and not through the product 20. The size of the gap 7/2 is controlled by moving the turn limit pneumatic cylinder 15 can be produced both in an automatic cycle from the machine commander and manually by turning on or off the corresponding crane. Switching on, switching off and adjusting the cartridge can be carried out not only when it is stopped, but also when the faceplate is rotating. Adjusting the force of the pressing of the product while rotating the faceplate is especially important and convenient when setting up from the gun using the product base on fixed supports. In a number of cases, it is advisable to rotate the magnetic unit not from a hydraulic or pneumatic cylinder 15, but manually. For this purpose, a handle is used, which is fixed on the stopper 19. PRESENTS INVENTIONS A magnetic cartridge with a rotating faceplate, carrying magnetically conducting zones separated by an insulator, and a non-rotating magnetic unit with ring magnets movably placed in the body of the cartridge, in order to increase reliability and control of fixing the part on the run, the magnetic unit is coupled to the body of the cartridge with a movable threaded connection and is rotatable by means of, for example, a gear sector-rake and hydraulically driven slats, and the ring magnets are concentric with the axis of rotation of the faceplate and form annular poles of opposite polarity, interacting through the air gap with the magnetic conducting zigzag faceplate, also made

concentrically located rings with sizes equal to the sizes of coaxial ring magnets.

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14 of FIG. 2