SU1247194A1 - Apparatus for cutting sheet material - Google Patents

Description

{The invention relates to the processing of metals by pressure and can be used in mechanical engineering for the preparation of products from sheet material.

The purpose of the invention is to improve the quality of cutting and durability of the cutting discs by eliminating the slipping of the discs on the sheet.

The drawing shows a kinematic diagram of a device for cutting sheet material.

The tool contains a mechanism 1 for clamping the workpiece, the top 2 and bottom 3 heads with cutting discs 4 placed on them, drives 5 for rotating the head around vertical axes coinciding with the axes of the shafts 6 and 7, respectively, drive 8 for moving the upper head into a vertical direction; an actuator 9 for moving the lower head in a horizontal direction; a pair of bevel gears 10 and 11 transmitting rotation from shafts 12 and 13 connected to the main drive 14 to shafts 7 and 6, respectively. In order to allow the upper head to move in the vertical direction and the lower head in the horizontal direction, the shafts 6 and 12 are made telescopic. For rotation from the shaft 6 to the cutting disk 4 in the upper head 2, bevel gears 15 and 16 are used.

In the lower head 3, bevel gears 17 and 18 serve to transmit the rotation from the shaft 7 to the cutting disk 4.

The device works as follows.

Before starting the cutting by moving the head 3, the necessary gap between the cutting discs is established. Compiler V. Morozov Editor L. Pchelinska Tehred O. Sopko Proofreader M. Maksimishinets

     Order 4057/15. Circulation 1001, Subscription VNIIPI USSR State Committee

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

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

42

4, while changing the distance between the head 3 and the driver 14 is compensated by the telescopic shaft 12. Then one of the heads: the upper head 2 is rotated to the required angle when cutting the outer contour of the part or the lower head 3 when cutting the inner contour in order when piercing the fox, it remained on waste. When turning the heads, the bevel gears 15 and 17 run in along the leading bevel gears 16 and 18, respectively. in the tool 1, the workpiece is set and clamped, the drive 14 is turned on and the cutting discs 4 begin to rotate at the same angular velocity. When the upper head 2 is moved downwards, which is possible due to the fact that the shaft 6 is made telescopic, the cutting discs 4 pierce the workpiece, and the frictional force between them and the workpiece causes the gray head to move, as a result of which the part is cut.

The constancy of the gear ratio between the drive and the cutting discs allows the latter to rotate at a uniform angular velocity, which, firstly, eliminates the pulsating loads along the entire kinematic chain and, as a result, increases the durability of the machine, and secondly, eliminates slippage of the disks along the billet, which improves the quality of the cut. Excluding cardan gears operating under heavy loads from the kinematic section and replacing them with serrated gears allows increasing the machine's efficiency and wear resistance, reducing the service time of the machine, and increasing its service life.

Claims (1)

DEVICE FOR CUTTING SHEET MATERIAL, containing a bed, a drive, a mechanism for clamping and turning the workpiece, upper and lower heads with cutting discs, kinematic with the possibility of rotation around the vertical axis and offset one in the vertical, the other in the horizontal directions ^ characterized in that, with In order to improve the cutting quality and durability of the cutting discs, the kinematic connection between the drive and the cutting discs is made in the form of bevel gears mounted on shafts, while the axes of the leading bevel gears with coincide with the axis of rotation of the heads, and the drive shafts are made telescopic associated with the drive, installed