SU1240558A1 - Holder of annular abrasive tool - Google Patents

Description

tI

Invention; Attributes to machine building and can be used in the manufacture of rings of ball bearings and similar parts with undercut.

The purpose of the invention is to improve the quality of processing while simultaneously blunting the two edges of the part by moving the articulated parts of the frame, which provide a self-assembly: tool i. ; i FIG. 1 shows the proposed device, a general view in section .; in fig. 2 .- same, top view; in fig. 3 is a detail processing diagram.

The device consists of a mandrel 1 with a cantilever part 2, a swivel mount 3 and a spiral spring. 4. The swivel mount consists of a trunnion 5, in which a bolt 6 fastens a plate spring 7. At the end of the swivel mount 3, a slot io with a cylindrical rod 11 fixed by means of a screw 12 is fastened with a groove 8 and screw 9. A cylindrical rod 11 serves as a holder of an annular abrasive tool 13 made, for example, from silicon carbide black. For machining kromrk parts 14 holder can be set

Covered in the housing 15, the caliper 16 serves to improve the quality of processing.

405582

 intra-machine and fastened with bolts 17. In a separate crown-. The matte 18 of the machine may have a rubber stop 19 that interacts with the holder of the holder.

The holder works as follows.

The tool 13 is brought to the contact with the edges of the part 14. At the moment

fO of contact, the attachment unit 3 is displaced in the axial direction, is in contact immediately with the two edges of the part and rotates around the axis of the mandrel, which ensures the self-installation of the tool. The presence of a plate spring T, which can be made in the form of a spring, provides compensation for the radial beats of the part during processing.

20 The diameter of the tool P, of conformance with contagiously choose depending on:

,

where H is the width of the annular undercut of the detail:

ipg hole diameter of the part; Thus, due to the movable articulation of the mount with the mandrel, the tool in the holder can be self-mounted when in contact with the workpiece, so that

.2

13

17

fie, 3

sixteen

Editor A. Ogar

Compiled by N. Ermakova

Tehred O. Gortvay Proofreader; SG Cherni

Order 3435/10 Circulation 740 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

A RING OF AN ABRASIVE TOOL, made in the form of a cylindrical mandrel with a rotary fastening unit located in its axial bore and with a fork at its free end, in which a removable tool holder in the form of a cylindrical rod is installed perpendicular to the plane of symmetry, which makes it clear that , e the purpose of improving the quality of processing at the same time. dulling of two edges of a part with an annular groove, the attachment unit is made in the form of interconnected leaf springs and trunnions, the trunnion is mounted in the mandrel bore with the possibility of axial movement, and the leaf spring is parallel to the mandrel axis, while the holder is equipped with an installed coaxially mandrel spiral spring, one end of which is fixed on the mandrel, and the other on the pin. ®