SU776715A1 - Die for finish cutting - Google Patents

Description

(54) STAMP FOR CLEAR CUT

one

The invention relates to a tooling for sheet metal stamping, and can be used for finishing cutting of parts on presses of simple operation, in particular for finishing cutting of parts used for petroleum and chemical equipment, as well as in the radio engineering and instrumentation industries.

There is a well-known stamp for cutting parts from sheet metal: a material on presses of simple action, containing a matrix installed in one part, a punch installed in another part, and also a clamp with an edge-ring covering;; Luisol. Shtam: equipped with a leremech mechanism, clamping with a fixing unit — the last one in a predetermined position, including lolzushki, mixed in a plane, perpendicular to the axis of the head, and related to the lam- num slab. with polzushkamI.

In the well known 1M of 1 pcs: m first, the clamp presses the material, and then a pansol is inserted into the material.

A disadvantage of the known shtamp is that the movement mechanism with the fixation unit of the latter includes a disc spring, which results in the shortness of the rod and its low reliability.

The purpose of the invention is to increase the durability and reliability of the stamp.

This goal is achieved by the fact that the clamp fixing unit is made in the form of ratchet mechanisms, the number of which is equal to the number of polluters. Each ratchet mechanism contains a ratchet wheel, rested on

10 axis, mounted on the lepodvig part of the stamp, a spring-loaded dog located in the basement part of the stamp, and a shaped part rigidly connected to the ratchet wheels and interacting with the slider.

The drawing shows a General view of the stamp.

The stamp contains an upper plate / with a fitted one and on it. Pansons 2 and wedges 3, a lower plate 4 with a matrix 5 installed on it, a clamp 6 with an annular edge connected by means of screws 7, spring-loaded 8, with the bottom plate 4. At installation 6, the grooves are inserted and there are sliders 9 installed on them with skos1and associated with wedges of f. The protrusions are also made on the slider.

10, which interact. Protrusions

11, made on parts x 12, located on the axis x 13, mounted on a stand 30

 .-- m jt- 776715

 3

Kakh / 4, mounted on. Lower Llite 4. On axle 13, ta snore wheels 15, interacting with dogs / 6, mounted on the top plate /, between the top plate / m clamp OGM 6 on the top of the Springs 17, dogs 16 are fitted with springs 18 .

Punching is done from the blank 19.

 works as follows.

When cutting, the workpiece 19 is fed into the working area, the top plate / and the wedge 3 is lowered. The wedge 3 is worn. The Laz-8s are wound and moved "x" along the grooves of the presser 6 in the direction of the working area of the head, mill. Sliders 8 with round protrusions 10 capture protrusions // of parts 12, which are in the initial position, for example, at an angle of 60 ° to the vertical axis of the parts J2. Then turn the parts 12, bringing the protrusions 12, to a vertical position. In this position, the part 12 presses the clamp 6 to the workpiece 19, after which the introduction of the punch 2 into the workpiece 19 begins. The rotation of the protrusion // of the part 12 with the slider 8 from the initial position to the vertical position causes the movement of the iris 6 to the workpiece and the insertion of the annular edge, then the process begins cutting down. The spring 17 only in the lower position of the stem prevents the burning of the burnout 6 by the lower springs a-mi 5. The process repeats, the dog 16 presses the protrusion / parts 12 from an upright position at an angle of, for example, 30 ° to repeat the pressing process and.

The proposed stamp allows you to increase the resistance of the punch and die in 2-3

four

times due to a more rigid connection of the tool with the head, and also to increase the durability of the stamp without reinstalling for adjustment.

Formula: I 3 o b ete n i

A stamp for the final cutting of parts from sheet material on presses of simple action, containing a matrix installed in one part, a punch installed in another part, a clamp with annular ribs, a covering punch and equipped with a moving mechanism and fixation unit, including polzuschki, displaceable in plastics, perpendicular to the axis of the stamp, and a wedge associated with the movable plate of the stamp and interacting with the sliders 1, differing in that.m, in order to increase the stability and reliability of the work of the stamp, the press is made (in the form of ratchet mechanisms, the number of which is equal to the number of sliders and each of which contains a ratchet wheel mounted on an axis fixed on the fixed part of the stamp, the subplug "1nnuyu pawl located in the movable part of the stamp, and a shaped part rigidly connected with ratchet wheel and interacting with a slider.

Source of information taken into account during the examination :,

1. USSR author's certificate No. 540692, cl. B 21 D 28/14, B 21 D 37/00, 01.29.74.

/ 5 K 13 16 II I

Claims (1)

A stamp for fine cutting of parts from sheet material on single-action presses, containing a die installed in one part, a punch installed in another part, a clamp with an annular rib, covering the punch and equipped with a movement mechanism and a fixing unit, including crawlers moving in the plane, perpendicular to the axis of the stamp, and the wedges associated with the movable plate of the stamp and interacting with the slider, characterized in that, in order to increase the stability and reliability of the stamp, the clamp fixing unit full in the form of ratchet mechanisms, the number of which is equal to the number of crawlers and each of which contains a ratchet wheel mounted on an axis fixed to the fixed part of the stamp, a spring-loaded dog located in the movable part of the stamp, and a profiled part rigidly connected to the ratchet wheel and interacting with creeper.