SU801940A1 - Die for working piece billets - Google Patents

Description

one

The invention relates to a tooling for processing piece blanks and can be used in machine building and instrument making, in the radio engineering and electronics industry for punching holes in sheet blanks.

A stamp for processing piece blanks is known, preferably sheets, containing upper and lower plates connected to the guide columns, on which punches and die are respectively installed. The stamp also contains a clamping piece fitted with springs and a plate with a window for installing workpieces, equipped with means for fixing the blanks at the working position. Plate with windows. Located between the matrix and the clamp-remover. Fixation tools are made in the form of a removable plate.

A disadvantage of the known punch is the low productivity of the process of placing and removing workpieces at the working position, caused by the need to install the workpiece in the closed slot of the plate and the lack of funds for

removing the machined part from the socket.

The aim of the invention is to increase the productivity of the installation of the workpieces at the working position of the stamp and to remove it from it.

This goal is achieved by making a protrusion on the clamp-puller facing the matrix and having dimensions in plan corresponding to the dimensions of the blank, installing the plate with a window on the guide columns with the possibility of moving along them relative to the bottom plate and supplying springs, making the window flat , with dimensions in terms of the lower step is smaller than the dimensions of the part being machined and not less than the dimensions of the outer surface of the matrix, the dimensions of the upper step are smaller than the corresponding dimensions of the protrusion-stripper projection, in complements through slots in two parallel walls of the plate with a window, with the two sides of the window disposed between the upper and lower stages E windows, and performing fixing means in the form of at least one clamp disposed on side wall in which is formed

Q is one of the slots, and at least

one stop perpendicularly.

The stamp may be provided with additional guide columns connecting the plate to the window with the bottom plate, and the springs interacting with the plates are mounted on these columns.

Figure 1 shows a General view of the stamp in the initial position; 2 in the extreme position; on fig.Z - section aa of figure 1; Fig.4 section BB of Fig.1; on fig.Z - section bb fig.Z; on Lig.b - section GG of Fig.2.

The stamp comprises an upper plate 1 with punches 2 fixed on it, a lower plate 3 with a matrix 4 fixed on it, guide columns 5 connecting the upper and lower plates, the pressure-remover b with the protrusion 7 facing the matrix and having dimensions in plan plate 8 with a window 9. The window in the plate is stepped; the width of the steps is less than the width of the workpiece; between the upper and lower steps in the walls of the plate 8 there are through longitudinal grooves. The plate 8 is connected to the bottom plate 3 by additional guide columns 10 and is equipped with springs 11. The plate 8 is made with tides 12, and guide sleeves 13 are pressed into them 13. The stops 14 are fixed on the guide columns 10, limiting the top position of the plate 8. Position the workpiece on the plate 8 is limited on one side (front relative to the feed direction) by the stop 15, and the side side is clamped by strips 16, pressing the workpiece against the groove wall under the action of springs 17. The stop 15 is made in the form of a rod equipped with a spring 18 and Himself acting with a wedge 19, mounted on the rod 20 with a spring. 21. Between the puller b and plate 8 there is a buffer 22 fixed by screws 23, with the upper plate 1 and puller 6 being connected by a spring 24.

The stamp works as follows. Flat blanks of predominantly plate type are supplied from a magazine (not shown) into the longitudinal grooves of the plate 8. The clamping strips 16 under the action of the springs 17 press the blank against the side wall of the groove serving as the base surface, then under the action of a spring-loaded pusher of the magazine (not shown) the spring 21 is compressed and the wedge 19 comes under the rod 15 and, compressing the spring 18, lifts it. After that, the workpiece rests against the front end of the rod 15. Next, the top plate 1 of the stamp is lowered, the magazine pusher is retracted from the working position of the stamp to the original

The position of the press-remover 6 is lowered until it contacts the workpiece and transfers the force to the plate 8 through the workpiece, compresses the springs 11 and, lowering the plate 8 with the workpiece, lowers the latter until it touches the matrix mirror. The clamp-remover, acting on the workpiece protrusion 7, presses it to the mirror matrix. Then, the punches 2 pierce the holes in the workpiece, after which the upper plate 1 and the parts associated with it are raised. After stopping the plate 8 in the initial upper position in its longitudinal groove serves the next billet and it pushes the processed part from the working position of the stamp.

The advantage of the stamp described is the availability of means to mechanize the installation of blanks at the working position of the stamp and their removal.

Claims (2)

1. A preform for machining piece blanks, predominantly sheet, containing upper and lower plates connected by guide columns, on one of which at least one punch is placed, and on the other a matrix, and also containing a spring-down puller and a plate with a window and means of fixing the workpiece at the working position, located between the die and the stripper clamp, characterized in that, in order to increase the productivity of the installation of the workpieces at the working position of the stamp and remove it from the clamp made with a protrusion facing the matrix and having dimensions in plan corresponding to the dimensions of the workpiece, and the plate with the window is connected to the bottom plate by guide columns can be displaced and fitted with springs, the window is made stepwise with dimensions in terms of the lower step less than the dimensions of the workpiece and not less than the outer dimensions of the matrix, the dimensions of the upper step are smaller than the corresponding dimensions of the protrusion of the clamp-remover, two slots are made in two parallel walls of the plate located between the upper and lower steps of the window, and the fixing means are made in the form of at least one clamp located on the side of the wall in which one of the slots is made, and at least one abutment located perpendicularly. 2. A stamp according to claim 1, characterized in that it is supplied to