SU918043A1 - Device for polishing tubular articles - Google Patents

Description

(54) DEVICE FOR POLISHING TUBULAR

The invention relates to a belt grinding machine designed primarily for machining tubular parts, with a highly curved axis (such as a bicycle wheel).

A known machine for grinding round curvilinear and rectilinear parts, comprising a bed with a rotating disk, on which belt grinding heads are mounted, feed and take-up rollers of the feed mechanism l,

On a known machine, only weakly curved and straight linear parts like pipes or bars can be machined.

The aim of the invention is to expand the technological capabilities of the device due to the ability to process parts with a strongly curved axis of the arc type.

In order to do this, a casing, fillet grooves are made in the housing and a support roller inserted into the device is rigidly connected to it, and the part feed mechanism to the treatment area is made in the form of a rod frame mounted for movement along a curved path from an individual drive. DETAILS

Figures 1 and 2 show variations of the machined parts; in Fig.Z diagram of the device in a perspective view; 4 shows a polishing head; figure 5 is a section aa in figure 4; on figb - section BB in figure 4; figure 7 is a view In figure 4; Fig.8 clamp holder details; Fig.9 profile gear rack; Fig. 10 shows the motion paths of the guide rollers.

The device comprises a polishing head 1 and a drive mechanism 2 for feeding the workpiece 3 to the treatment area. The polishing head 1 consists of a body 4 with a ring gear 5, in which a drum 6 with a pulley 7 is rotatably mounted. The drum b is rotated from the electric motor 8 through the flexible element 9. The body 4 and the electric motor 8 are mounted on the frame 10. In the drum b on bearings 11 a driving roller 12 is installed, having a rotational drive from

25 gears 13, which engage with an internal gear crown 5 of the housing 4. In the grooves 14 of the drum 6, the driven rollers 15. and 16 are fastened with which tension and

Claims (1)

30 changing the angle of coverage of the grinding belt 17 when polishing the workpiece 3. In addition, a counterweight 18 is installed in the grooves 14 of the drum 6. The drive mechanism 2 feeds the workpiece to the treatment area contains a gear wheel 19 rigidly mounted on the drive shaft 20 driven by the motor 21 through rotation flexible element; 22. A second gear wheel 23 is rigidly mounted on the drive shaft 20, which is in contact with the profile gear rack 24 attached to the rod frame 25, which is mounted on the guide rollers 26, is enclosed. profile grooves 27, made in the frame, 10. The rod frame 25 carries the holder 28 of the part 3, pressed by the springs 29 to the support roller 30 in the direction perpendicular to the plane of movement of the part 3. The roller 30 is attached to the body 4 of the polishing head 1 through the bracket 31. The holder 28 of the part is made in the form of two collets 32 consisting of a pipe 33 with slots 3 inside of which a spring-loaded rod 35 is placed, having a spring 36, which has a spacer 37 at one end, a. on the other, a thread 38 with a nut 39. A toothed rail 24 is made in the form of chain links 40 rigidly attached to a copier 41. The device works as follows. The part 3 is mounted on the holder 28 in the clips 32 .. By turning the nut 39 the part 3 is clamped. Electric motors B and 21 are switched on. Lens 17 produces a complicated movement around rollers 12, 16 and 15 and around part 3. The supply of part 3 to the treatment zone is carried out from the motor body 21 through the flexible element 22, shaft 20, gear wheel 23 moving along the curved path of the rail 24, in parallel with which the part 3 is installed. After the passage of the entire part 3 through the processing zone. The motor 21 stops, the part 3 is removed and the next part 3 is installed; motor 21 is reversed and the cycle repeats. When processing a part 3 (Fig. 2), bending in a plane perpendicular to the plane of movement of the part 3 is compensated by springs 29. Claims of the invention A device for polishing tubular parts comprising a body, a belt polishing head and a mechanism for feeding a part to a work area different to that that, in order to expand technological capabilities, profile grooves are made in the case and rigidly connected to the device, which is inserted into the device, are rigidly connected with them, and the mechanism for feeding the part to the machining area is designed as mounted on guides the rollers enclosed in the profile grooves of the housing, the rod frame to which is attached the holder parts, pressed by springs to the supporting roller, wherein the pivotal frame is movable along the curvilinear. trajectory from an individual drive through a gear, the wheel of which is mounted on the drive shaft, and the rail is made in the form of chain links and is rigidly connected with a cam and with a rod frame. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 102275, cl. B 24 B 21/16, 1951. FIG. one Fig2 Jli / L 12 ABOUT P J ueS Bb No and 3 / thirty FIG b 7 "/ to Fig.8