SU1496888A1 - Thread-cutting device - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for rolling external threads on multi-spindle lathes. The purpose of the invention is to improve the quality of thread due to self-installation of thread rolling rollers relative to the workpiece. The device is equipped with a stand with an axis and additional elastic elements. The case of the thread rolling device is mounted on an axis with the possibility of rotation. Elastic elements are placed on the rack from different sides of the axis with the possibility of interaction with the body. Before rolling the threads, the device is installed on the machine support so that its longitudinal axis coincides with the axis of the workpiece. As the thread rolling rollers approach the workpiece, some displacement of the axes occurs. This displacement is compensated for at the moment of contact between the rollers and the workpiece by compressing one of the additional elastic elements and turning the head body on the stand axis. 2 Il.

Description

The invention relates to metal. machining, can be used for knurling external threads with profile rollers on multi-spindle lathes and is complementary to the invention according to ed. No. 946753.

The purpose of the invention is to improve the quality of the rolled thread by self-installation of thread rolling rollers relative to the workpiece.

Figure 1 shows the thread rolling device in the working position (at the end of the working stroke); figure 2 - section aa in figure 1.

Thread rolling device contains. Moving part 1 of the housing (Fig, 1), movable levers 2 and 3, profile

knurling rollers 4 and 5, smooth rollers 6, shackles 7, ti gi 8, retracting spring 9, return spring 10, on the axis of rotation 11, elastic elements 12 and 13 and the stationary part 14 fixed to the support 15 of the machine with screws 1bo Thread rolling rollers 4 and 5 are mounted on the axis 17 of the movable levers 2 and 3, which are connected to each other and the link 7 by means of the axis 18. At the other end of the link 7 fixed 8, on which the return spring 10 is mounted. part 14 of the housing, having a U-shaped (figure 2), installed the movable part 1, and they are interconnected by means of an axis, 11 turns. Movable, part 1 of the body

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has the ability to rotate relative to the fixed part 14 on the axis 11, since the axis of rotation 11 intersects with the axis of the power rod 8, then the transverse hole 19 is made in the axis 11 of rotation, coinciding in size and direction with the axial hole 20 of the body in the movable part 1. Elastic elements 12 and 13 are installed between the movable body part 1 and the fixed part 14 on opposite sides of the axis of rotation 11 on the same distance part 14, axis 11, the body part 1 and the drive rollers 6 installed in the body. Since the levers 2 and 3 with the aid of the earring 7 and the axis 18 of the heavy 8 are held against the longitudinal movement of the feed force F, the rollers 6, moving along the inclined surfaces of the levers 2 and 3, act on the latter with a force K and turn them towards each other to a friend around a common axis 18, compressing the spring 9, as a result; In this case, the thread rolling rollers 4 and 5 move in the radial direction and hold the thread rolling rollers.

rollers in a symmetric position with a force of N and with the help of an axially billet axis 21. blank elements 12 and 13 are symmetrical

self-aligning with respect to the workpiece 21, with the same force to form the thread until it is completely formed; profile

During the reverse course of the caliper 15, the spring 10, unclenched, holds the thread-rolling device operates as follows.

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The adjusted device is mounted on a transverse caliper 15 (FIG. 1) of a multi-spindle turning machine. The fixed part 14 of the body is fixed on the caliper 15 .. All components and parts inside the movable part 1 of the body are movable relative to the latter, and the mobile part 1, in turn, has the ability to swing on the axis 11 relatively fixed parts 14, and therefore relative to the caliper- 15. Before starting work, the threaded device is inserted into the work. I feel the zone and set so that at the initial moment of the working stroke 35 of the support, the thread rolling rollers 4 and 5 will take up a position on one line of the axes of the rollers and the workpiece 21 (Fig. 1). In this position, the thread rolling rollers and workpieces of the needle case 8 with its free end are fixed on the stop fixedly mounted on the machine body (not shown). After the working feed, the caliper 15 begins to move along the direction of the rolling rollers 4 and 5 in the left position, so that under the action of the spring 9 they diverge in the radial direction. Then everything is arranged

V.

The device, together with the caliper, moves from the working area to the starting position for the next cycle.

Claims (1)

Invention Formula Thread rolling device according to aut. St. 946753, which is so that, in order to ensure quality of the rolled thread due to self-installation of the rolling tool, relative to the workpiece, it is provided with an axis and additional elastic elements, and - Tavnim, with the part of the body fixed on the caliper, Vsoltsen U-ob-, different for fixing the specified axis in it, and the other part of the body mounted on the axis with the possibility of on the part 14, the axis 11, the movable part 1 of the housing and the drive rollers 6 installed in the housing. Since the levers 2 and 3 with the aid of the shackle 7 and the axis 18 of the thrust 8, are kept from the longitudinal movement of the feed force F, the rollers 6, moving along the inclined surfaces of the levers 2 and 3, act on the latter with a force K and rotate them towards each other around a common axis 18, compressing the spring 9, as a result; In this case, the thread rolling rollers 4 and 5 move in a radial direction5 50. Bonakat rollers 4 and 5 in the left position, so that under the action of the spring 9 they diverge in the radial direction. Then everything is arranged V. The device, together with the caliper, moves from the working area to the starting position for the next cycle. Invention Formula Thread rolling device according to aut. St. 946753, which is so that, in order to ensure quality of the rolled thread due to self-installation of the rolling tool, relative to the workpiece, it is provided with an axis and additional elastic elements, and - Tavnim, with the part of the body fixed on the caliper, Vsoltsen U-ob-, different for fixing the specified axis in it, and the other part of the body mounted on the axis with the possibility of To the workpiece support caliper 15, the fixed-45 company and is spring-loaded to the first. to P) : uh eat go L - A FIG. g