SU421444A1 - DEVICE TO TURNING-SCREW MACHINE FOR TREATING SCREWS OF SURFACE VARIABLE - Google Patents

Description

one

The invention can find application in chemical and food engineering for processing screws and distribution screws of variable pitch.

Known devices for a totorio-screw cutter for the processing of helical surfaces of the interleave step, which is a connected, spindle of the machine with a lead screw, have a tuned kinematic day, which is equipped with a swinging copy line, defining the movement of the step increment, transmitted to the sum mechanism connected to the machine screw.

However, these devices do not allow cutting large shafts with a large screw pin.

The device is different from the known ones in that the summing mechanism is connected with the machine tool and the copier ruler is mounted on a slide, kinematically connected with the machine screw.

This provides the possibility of machining large-pitch helical surfaces in large parts.

In addition, in order to expand the possibilities of setting up, the copier ruler is made of two shoulders, and the roller, which we interact with, is reversible relative to its swing axis.

The drawing shows the kinematic scheme of the proposed device.

The device includes an attachment housing 1, the shaft 2 of which is connected by a coupling 3 with a spindle of 4 speed boxes 5. At the cornus there is a bevel differential 6, the rack and pinion gear 7 of which is centered on the rail 8. On the shnandel 9, there is a cartridge in which the workpiece 10 is fixed.

The incline of the two shoulders ruler 11 cBoeii axis 12 is fixed on the movable slide 13, which is screwed 14, the guitar of the interchangeable gears 15, the end gear 16 and 17 is kinematically connected with the lead screw 18. One of the ends of the inclined two shoulders 11 of the ribbon 11 is connected with the same running gear screw through viit 19, bevel wheels 20, 21 and guitars 22 interchangeable gears. The cutting tool 23 (cutter or milling cutter) is fixed on the caliper 24. The workpiece is supported by the center of the tailstock 25.

The rotation of the gearbox 4 speeds 5 is carried out from the electric motor 26 and the belt drive 27. The gearbox 28 is closely connected with the spindle 4 of the guitar 29 of the interchangeable gears.

From the electric motor 26 by the means of the belt drive 27, the constant speed is the rotation of the spindle 4 gearbox 5. Next, this speed through a conical

the differential 6 is reported by the spindle 9 of the guard case. From (speed boxes constant speed of rotation is communicated to track driver 18 through 29 replaceable gears and a gearbox 28. Next, the rotation is transmitted by conical gears 17 to two wheels 16 and 21, from which rotation is transmitted through two kinematic chains: through conical the wheels 16 and the guitar 15 on the lead screw 14, moving the slider 13 with the paclon ruler 11; through the bevel wheels 21 and 20 on the track screw 19, swinging the ram down the ruler axis 12.

With translational movement and simultaneous rolling of the two shoulders of the ruler roller, the rail roller 30 does not move into its slot with a variable speed, which is communicated to the rail, and then passes through taper 7 to a conical differential, which sums it at a constant speed reported by the machine spindle 4.

When the roller 30 is moved in an inclined ruler, the rotational speed of one direction is reported to the rake to the axis 12, and after the axis 12 to the opposite direction. Thus, the spindle 9, without the use of boosting, their mechanical transmissions receive a variable rotational speed, which is initially subtracted from the constant speed, communicated to the spindle from the gearbox, and then folded, which corresponds to the initial formation of an irregular schag, from least to medium, and then from medium to high.

A constant speed of time, the cutting tool 23, mounted on the caliper 24, is produced from the lead screw 18.

Subject invention

Claims (2)

1. A device for a turning screw-cutting machine for machining V1GGOVY surfaces of variable pitch, representing a connecting spindle of the machine with a lead screw, a tuned kinematic chain, which is equipped with a swinging die cutter, which specifies the movement of the increment of pitch, transmitted to the summing mechanism, distinguished by that, in order to allow the machining of the helical surfaces of the large schag on large parts, the summing mechanism is associated with the shnindle gaggle, and the copierna liyiek is mounted on a slider, kinematically with -bonded to the spindle of the machine. 2. The device according to claim 1, characterized by the fact that, in order to expand the possibilities of adjustment, the line is made of two shoulders, and the video, which interacts with it, is adjustable with respect to its swing axis.