SU674833A1 - Machine for working differently directed helical grooves - Google Patents

Description

one

FIELD: machine tool industry.

A machine for machining multidirectional helical grooves is known, in which a shaping mechanism which is a drive; The turn of the product and a pair of screw-nuts are included in the kinematic chain connecting the spindle of the product with the caliper carrying the tool 1.

The disadvantage of the known machine is its non-versatility, due to the fact that the re-machining of the support for ssushb sticks from the copier. With this design of the screw-cutting chain, practically a separate copier is required for the product, which significantly complicates the adjustment of the machine. - The aim of the invention is to simplify the setting of the machine by allowing the setting over a wide range of pitch and length of the machined screw grooves.

This is achieved by introducing into the kinematic chain a slider that carries two pargiegel gear racks, a cc "diverk: e between the gear wheels of internal engagement with an incomplete gear wheel

a carriage with a rack and pinion wheel interacting with the said laths and kinematically connected; in the spindle of the product, and a gear rack pair, the rail of which is rigidly fixed on the slide, and the gear wheel is kinematically connected with the screw – nut pair.

The drawing is a kinematic diagram of the machine.

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Spindle 1 carrying the workpiece / connected to the caliper 2 with a kinematic chain containing tuning organ 3, for example, a guitar of interchangeable gears, on a threaded thread, swivel telescopic connection; 4, mounted on a movable carriage 5 slider wheel b, slider 7, bearing two parallel gear racks 8 and 9, connected by gears 10 and 11 of internal gearing with an incomplete crown, rail 12, rack gear 13, body 14 for setting the length of the cut thread, transmission screw 15 - nut 16 and set gears

5 gears (not shown). The spindle 1 cs dike also with the engines 17 kinematic chain with the body 18 of the setting of the frequency of rotation of the spindle and permanent gears

0 (not shown in the diagram).

On the slide 2, a rotational drive of a milling cutter 19 is mounted, comprising a motor 20, a setting body 21 and permanent gears (not shown)

Screw gear 22 servos for | Mixing the caliper in the radial to the AE axis of rotation of the spindle 1 directed;

Stans-k works as follows,

The milling cutter 19 rotates from the engine 20 at a frequency tuned by the organ M 21. The spindle 1 receives from the engine a -17 rotation with an angular speed set by the body 18-. From ITINDEL 1, through the adjustment body 3, permanent gears (not shown) and telescopic joint 4 receives rotation of the pinion wheel b with an angular velocity of constant magnitude and direction.

The wheel 6, alternately hooking with the slats 8 and 9, informs the slider 7 reciprocating motion. When the wheel 6 is driven around the wheel 10 or 11, the carriage 5 moves from ONE rail to another, and in the extreme positions of the wheel G, the movement of the slider 7 occurs, the stroke length of the slider 7 is constant and equal to the difference of the distance between the extreme points of the divisor circle of the gear wheels 10 and 11 internal engagement with the C-incomplete crown and diameter of the dividing circumference of the pinion wheel 6.

In the reciprocating motion of the slide 7, the gear wheel: 13 receives a reciprocating rotational motion, which, using a kinematic chain containing the organ 14, the settings: permanent gears (not shown) and gear screw 15 - nut Ib, is converted into reciprocating motion of the slide 2 whose stroke length is adjusted by the organ 14 "

The combination of interlinked movements; rotary (spindle 1) and translational (caliper 2) provides movement of the milling cutter 19 against the workpiece along the helix. When the caliper 2 moves in one direction, the locking mechanism is machined. and when moving eiro in the opposite direction, it is prashozhodna. d, A smooth transition from one groove1: and ic to another takes place during rolling of wheel 6 on wheels 10 and 11. With repeated reciprocating movement of the caliper, the cutter moves relative to the workpiece along one path, which allows: to process the grooves in several passes, periodically moving caliper

in the radial direction by means of a screw gear 22. On the machine, it is also possible to machine open locks or right-turn helical grooves. In this case, the stroke of the slide 2 of the bridge should be adjusted more than the length of the screw groove in the direction of the axis of the product,

It is also possible cutting screw grooves cutter mounted on the caliper 2

; The machine has the following calculated kinematic chains: a chain of main motion of the cutter, connecting the motor 20 with the cutter 19 and containing the body 21 for setting the rotation speed of the cutter 19; the chain of rotation of the spindle 1 with the workpiece (chain of circular feeds) I connecting the motor 17 with the spindle 1 and containing the organ 18 on

0 setting the frequency of rotation of the spindle 1; chain; connecting slider 7 with a cap screw 15 and a stroke length adjustment body 14 cynnojpTa 2; a screw-cutting chain connecting the spindle 1 with the lead screw 15 and containing the or5 gun 3 settings of the pitch of the helical grooves, the reversing mechanism and the adjustment body 14 of the slide stroke 7.

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Claims (1)

1. USSR author's certificate W 128724, cl. B 23 B 5/48, 1969, Yu  H