SU1669625A1 - Apparatus for planetary thread rolling - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used when rolling external threads. The purpose of the invention is to simplify the design and expand the technological capabilities by rolling threads on the hollow parts. Between the knurling roller and the segment is placed the loading leashes located on a rotating drum mounted coaxially with the axis of rotation of the knurling roller. To simplify the kinematic connection between the knurling roller and the leads, the rotation of the drum is carried out by means of a billet which is in the process of rolling between the segment and the knurling roller. The expansion of technological capabilities is provided by supplying the device with a semicircular U-shaped guide installed concentrically to the movement of the leads of the drum. Each lead is made as an axially spring-loaded rod with a collar and interacts with the surface of the U-shaped guide. 3 il.

Description

The invention relates to the processing of metals by pressure and can be used for rolling threads.

The aim of the invention is to simplify the design by using the part as a drum drive, as well as expanding the technological capabilities by rolling threads on the hollow parts.

FIG. 1 shows a device for planetary rolling of threads; in fig. 2 is a section A-A in FIG. one; in fig. 3 - the mechanism for removal of parts.

The device for planetary thread rolling contains a frame 1, a knurling roller 2, a bearing 3, a drum 4, a knurling segment 5. The knurling roller 2 is mounted on

drive spindle 6. A drum 4 is mounted on the outer ring of the bearing 3 with the possibility of free rotation. On drum 4, nuts and bolts 7 are secured with bolts 8 with guide bushings 9, in which drivers 10 are installed, made in the form of spring-loaded rods with collars 11. Drivers 10 are mounted for rotation and displacement in the axial direction.

On the frame 1, on the side opposite to the knurling segment 5, a V-shaped semicircular guide 12 is installed, one end 13 of which is made with a sloping lead-in part starting at the exit 14 of the knurling segment 5.

ABOUT

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The nut 15 keeps the driver rod 10 from falling out of the sleeve 9. A spring 16 is mounted on the rod 10. Along the loading tray 17, the blanks 18 fall into the rolling zone.

The device has two zones: I - the zone of supply of blanks; HI - zone unloading parts.

The device works as follows.

The blank 18 along the discharge chute 17 enters the loading zone of the blanks I. The drivers 10 of the supply drum 4 have the possibility of axial movement under the action of a circular guide 12. This ensures compression of the springs 16. With the further movement of the leads 10 along the guide 12, the leads 10 slide off the working part The V-shaped guide 12 and under the action of the springs 16 fall into the opening of the workpiece 18 located at the loading position. After that, the workpiece 18 together with the lead 10 is fed to the knurling zone between the roller 2 and segment 5 (not shown). Under the influence of the roller and the segment on the workpiece 18 form a threaded profile. The roller 2 acts on the workpiece, rotates it and moves progressively over the knurling segment 5. The workpiece 18 in turn rotates the accompanying leash 10 located in its hole and, moving progressively, acts on it in the tangential direction, leads it along circle. The leads 10 are mounted on the crust 8 of the drum 4. As the workpiece, moving between the roller and the segment, leads the leash, the drum 4 begins to rotate on the bearing 3 and move the rest of the leads.

As the workpiece 18 moves with the leash 10 along segment 5 and approaches zone II. removing the blanks from the knurling zone, the next driver 10 is fed into zone I along the guide 12, enters the opening of the next blanks 18 and moves it into the knurling zone. As the formation of a thread on each previous workpiece and its translational movement between the roller and the segment, each subsequent workpiece is fed to the knurling area with a corresponding lead.

Upon completion of the thread rolling on the workpiece 18 at the exit 14 of the knurling segment L, the workpiece 18 with the lead 10 interacts with the fork 13 of the guide 12

removal of parts. The sharp end of the 13 fork picks up the rod 10 under the flange 11, while the latter slides along the fork lift angle. ki rises, compressing the spring 16. The driver 10 emerges from the hole of the part 19,

which falls into the container. The lead 10, without part, slides along the straight part of the guide 12, at the end it comes off of it and loads the next blank.

Thread rolling was done on

thread rolling machine with roller segment, mod. AB 2520 using the proposed machine for rolling threads on hollow billets.

The billet of a resistant connecting nut with a M14 x1.5-6 d thread was rolled, the diameter of the inner hole was 8.2 + 0.1 mm, material Art. 10 KP GOST 10702-68.

The device for planetary rolling of threads, in comparison with the prototype, expands the technological capabilities of thread-rolling equipment with a roller segment, ensures continuity of the process, simply and reliably in operation, and produces high-quality hollow-walled parts.

Claims (1)

Claims. Device for planetary knurling of threads, containing a loading chute, segment mounted on a bed, spindle with a knurling roller and a drum mounted thereon, characterized in that, in order to expand technological capabilities by rolling threads on hollow parts and simplifying the construction by using the part as a drum drive, it is provided with drivers mounted on the drum under the parts, made in the form of rod with springs that are spring-loaded in the axial direction, and a semicircular guide with a lead-in and working parts with a V-shaped cross section, the latter being installed concentric with the axis of the rolling roller with the possibility of its end face interacting with shoulders of leads, and the drum is installed with the possibility of free rotation. w L LA FIG { YU Fig 2 -6 15 tikis.3