SU1486278A1 - Die set for cutting off surplus metal of hollow articles - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to die tooling for separation operations. The purpose of the invention is to improve the quality of machined parts and increase the durability of the work tool. The stamp contains fixed on the bottom plate 1 matrix 2, spring-loaded ejector 3

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1486278

and mounted on the top plate "spring-loaded clamp 5. In the grooves> .zhizhima. 5 are located the sliders 6, which are made in the form of a truncated cone component parts 7 of the punch.

A wedge 16 of the mechanism for horizontal movement of the sliders 6 and the sleeve 10 with the outer screw surface of the mechanism of rotation of the sliders 6 are rigidly fixed on the upper plate. At the lower end of the clamp 5 is installed with the possibility of relative rotation. bearing 14. Between the clamp 5 and the top plate 4 is a disk 12, communicated with the nut 9; rigidly attached to the clamp 5 by means of a finger 13. When lowering the top plate 4, the clamp 5 by means of the support 14 presses the part 17 and the ejector 3 to the bottom plate 1. The wedge 16 moves the sliders 6 from the center of the die, and the sleeve 10 tells the rotation of the nut 9 and its associated I press 5 and the disk 12. Part 7 of the punch, rolling on the part 17, cut off the allowance. 1 hp f-ly, 1 ill. „

The invention relates to the processing of metals by pressure, in particular to a strapping tool, used for trimming allowance for hollow parts obtained, for example, by drawing or molding.

The purpose of the invention is to improve the quality of workpieces and increase the durability of the working tool of the stamp.

The drawing shows a stamp, a general view, a section. thirty

A matrix 2 is fixed on the bottom plate of the 1 stamp. In the working hole there is a spring-loaded ejector 3. • On the top plate 4 ·.

installed spring clip 5, $$

In the slots of which there are spring-loaded sliders 6, bearing parts ’7 of the composite punch’. Each part 7 of the composite punch is punched in the wad of the truncated cone, which is freely mounted on the axis 8, pressed into the half face 6.

The stamp is provided with a clamp rotation mechanism 5 containing a nut 9, rigidly connected with the clamp 5, and a sleeve 10 coupled to the nut 9 with an outer screw surface rigidly fixed on the upper plate 4. Rotated between the upper plate 4 and the ring 11 the disk 12 carrying the finger 13, the free end of which is located in the longitudinal groove made on the nut 9, on the bottom. the end face of the clamp 5 is mounted with the possibility of relative rotation of the $$ support 14 fixed by means of ring 15. A wedge 16 of the mechanism for horizontal movement of the sliders 6 is rigidly connected to the upper plate 4.

The stamp works as follows. • Part 17 is installed in the cavity of the matrix 2 on the end surface of the ejector 3. When lowering the top plate 4, the clamp 5 presses the part 17 and the ejector 3 to the plane of the bottom plate 1 by means of the support 14. from the center of the stamp, and the sleeve 10 to the rotation of the nut 9 and associated with it the clamp 5 and the disk ¹ ,. 12. Moving together with the "sliders" 6, parts 7 of the punch touch parts 17 and, rolling around it, cut off the allowance. return to the starting position.

The application of the proposed die design due to the locality of deformation and rotation of the components of the punch eliminates the distortion of the shape and provides high quality machined parts. Due to local deformation, a decrease in the deformation forces and an increase in the durability of the working tools of the stamp are achieved.

Claims (2)

Claim 1. A stamp for trimming allowance for hollow parts, containing a matrix mounted on the bottom plate and a spring-loaded ejector and a spring-loaded clamp mounted on the top plate ^ bearing the slider with parts placed on them1486278 punch as well as a wedge mechanism for horizontal movement of half-shells with a wedge rigidly fixed on the upper one. ₍ rotation, the disk located between the upper plate and the clamp and connected with the latter with the possibility joint rotation relative to the top plate, and the clamping mechanism, and each part of the composite • punch is made in the form of a truncated cone mounted for rotation, 2. Stamp pop. 1, characterized in that the turning mechanism of the clamp is made in the form of a nut, rigidly connected to the clamp and rigidly fixed on the top plate bushings with an outer screw surface mating with a nut.