SU1632594A1 - Automatic thread-cutting lathe - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in the manufacture of parts with an external thread. The purpose of the invention is to expand technological capabilities and increase productivity by simultaneously rolling threads on several parts. The machine contains a frame with two thread rolling rollers, a cam fixed on the shaft of one from them, and the mechanism of giving of preparations with a tray and sprung, pickup. The machine is also equipped with additional pickup and adjustable stop placed in the feeding mechanism. The tray is arcuate in the form of a hollow pipe. The lower part of the tray is parallel to the axis of rotation of the thread rolling rollers. The part feeder is located with the possibility of reciprocating movements in the guides. parts enters the arc-shaped tray into the space between the thread rolling rollers and the required number of them is cut off and loaded into the area rolled 4 ,, sludge "(L

Description

The invention relates to the field of metal forming and can be used in the manufacture of parts with external thread.

The aim of the invention is to expand the technological capabilities of the machine and increase productivity by simultaneously rolling threads on several parts.

Rig „1 shows a simplified kinematic diagram of a re-roll automatic machine; FIG. 2 — view A on FIG1 (the mechanism for feeding the blanks at the moment of capture of the part by the rollers); in Fig. 3, view A in Fig. 01 (mechanism

feeding the blanks at the time of the end of the thread rolling); figure 4 - section bb-fig 3

The thread-rolling machine contains a drive consisting of an electric motor 1, a V-belt 2 and a worm gear, 3 gears, a drive 4 and a driven 5 shaft with thread rolling standard rollers 6 and 7 of the same diameter and interchangeable gears 8 and 9 with the number of teeth Z, j and Z respectively, between which an intermediate gear 10 is installed for rotating the rollers 6 and 7 in the same direction with different speeds, as well as a mechanism for feeding parts into the knurling area, which is OE

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includes a bunker feeder with i tray 11, made in the form of a pipe, a rocking lever 12 with a spring 13, freely mounted on an axis 14, a rod 15 that interacts with a cam 16, which has two diametrically symmetrical working profiles and is located on the shaft 4, the feeder 17, mounted with the possibility of reciprocating motion in guides 18, to which spring-loaded supports 19 are attached. The feeder 17 is provided with an adjustable stop 20, which allows to install an integer number of processed parts in the feeder 17. Leu 21 (changing lengths workpieces) 0

Thread rolling machine works as follows

The torque from the electric motor 1 is transmitted through the wedge belt 2 and the worm gear 3 to the drive shaft 14 with the knurled roller 6, from the shaft 4 the torque is transmitted to the driven shaft 5 with the knurled roller 7 through gear system 8-10 "Together With the roller 6, the cam 16 rotates, acting on the rod 15, swinging the lever 12 with the feeder 17, thereby expanding the spring 130. When the supporter 17 is retracted, the parts 21 from the bunker feeder 11 are fed up to the stop 20 and held by the pickups 19 "With further rotation of the drive shaft 4 stock 15 sry From the protrusion of the cam 16 and the lever 12 under the action of the spring 13 acts on the feeder 17, which, by pushing the supports 19, will send the parts 21 to the knurling area at the instant that the threads of the rollers 6 and 7 coincide in a step. At the moment of picking up the parts 21 by the rollers 6 and 7, the remaining parts in the hollow chute 11 are kept from moving forward by the feeder 17, the effect of which on the parts 21 delivered to the knurling zone lasts for some time until the cam 16 does not act on the rod 15 and does not pull the lever 12 feeder 17 in the upper extreme position.

The thread rolling on the parts 21 is carried out by the rollers 6 and 7 during the withdrawal of the feeder 17 and the time it is in the upper extreme position, during which several

16325944

i the following parts 21 of the hollow tray

11 are fed into the slot, bounded by the lower arms 19, from the sides by the guides 18, from the top by the feeder 17, and from the front by the stop 20 0. The adjustable stop 20 allows the whole number of workpieces to be set in the feeder

Further, the whole process repeats. The automatic rolling machine allows, when using rolling rollers of increased width, to roll threads on several parts at the same time, which increases the machine performance by an appropriate number of times without reducing the quality of the thread being rolled.

Claims (1)

2Q claims An automatic thread-rolling machine containing a frame with thread-rolling rollers located on it, mounted on the axles with the possibility of rotation thirty 35 40 45 50 , - 55 at different speeds, a cam mounted on the shaft of one of the thread-rolling rollers, a work feed mechanism, including a hopper feeder with a tray and spring-loaded pick-up, a part feeder installed with the ability to interact with the cam, characterized in that machine and increase productivity due to the simultaneous rolling of threads on several parts at the same time, it is equipped with guides placed in the mechanism for feeding the blanks, additional grip blanks and adjustable stop, and the tray is made in the form of a pipe, the lower part of which is parallel to the axis of rotation of the roll rollers on the side of their end surface, spring-loaded supports are installed on the outer side of the guides, the feeder parts are located with the possibility of reciprocating relative to the inner surface and an adjustable stop is rigidly fixed on the parts feeder parallel to the axis of the lower part of the dastardly tray and is located on the side opposite to nd end surface, rolling rollers 11 are fed into the slot, bounded by the lower arms 19, from the sides by the guides 18, from the top by the feeder 17, and from the front by the stop 20. Further, the whole process repeats. The automatic rolling machine allows, when using rolling rollers of increased width, to roll threads on several parts at the same time, which increases the machine performance by an appropriate number of times without reducing the quality of the thread being rolled. 2Q claims An automatic thread-rolling machine containing a frame with thread-rolling rollers located on it, mounted on the axles with the possibility of rotation thirty 35 40 45 50 55 at different speeds, a cam mounted on the shaft of one of the thread-rolling rollers, a work feed mechanism, including a hopper feeder with a tray and spring-loaded pick-up, a part feeder installed with the ability to interact with the cam, characterized in that machine and increase productivity due to the simultaneous rolling of threads on several parts at the same time, it is equipped with guides placed in the mechanism for feeding the blanks, additional grip blanks and adjustable stop, and the tray is made in the form of a pipe, the lower part of which is parallel to the axis of rotation of the roll rollers on the side of their end surface, spring-loaded supports are installed on the outer side of the guides, the feeder parts are located with the possibility of reciprocating relative to the inner surface and an adjustable stop is rigidly fixed on the parts feeder parallel to the axis of the lower part of the dastardly tray and is located on the side opposite to nd end surface, rolling rollers Bj wasa 12 sixteen Fig 2 1632594 View A P 12 BUT P 1 s I WOULD