RU1814576C - Device for cutting and deforming cut portions - Google Patents

Abstract

Usage: in the production of cold bent profiles. SUMMARY OF THE INVENTION: A pair of rolls are provided in a device for notching and deforming notched portions in a strip material. Each roll is made in the form of a set of alternating working disks 9 and intermediate distance elements 10. Grooves are made on the periphery of the working disks. In the grooves are fixedly mounted cylindrical working tools 8 with cutting edges. The dimensions of the working tools are related by mathematical dependencies. When moving the strip, it is captured by working tools 8 and working disks 10 of the lower roll, and together they cut the strip and deform the incised sections. 3 ill.

Description

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The invention relates to equipment for the processing of metals by pressure and can be used in the production of cold-cut expanded metal profiles.

The purpose of the invention is to reduce the cost of manufacturing the device when used for the production of profiles with perforations of steel with a thickness of 2-3 mm with a content of 0.11-0.25% carbon.

Figure 1 schematically shows the proposed device, General view; in Fig, 2 - the interposition of the elements of the upper and lower rolls; in Fig.3 - elements (disks) with a working tool (cylinders), general view.

The device (Fig. 1) contains two beds 1 mounted on a plate 2, in the windows of which, with the help of pillows and bearings, the upper 3 and lower 4 grooved rolls are installed, made in the form of a set of alternating disks and intermediate distance elements. The rolls are installed with a gap 3, the magnitude of which is changed by the pressure devices 5, the diameter DB of the upper roll is larger than the diameter de of the lower roll.

The upper roll (Fig. 2) consists of alternating intermediate distance elements 6 and working disks 7. On the periphery of the disks 7, in round grooves of depth h, work tools (cylinders) with cutting edges 8 and diameter d (16 ... 20) 6 are fixedly mounted whose axes XX are parallel to the horizontal axis of the roll and the height h is greater than the width b of the working disks, i.e. between the disks 7 and the elements b there is an axial clearance ip. The distance between the vertical axes YY of the cylinders 8 is denoted by a ..

The lower roll consists of alternating working (cutting) disks 9 opposing the upper roll elements b and distance elements with a dfl diameter opposing the disks 7. The width bn of the elements 10 is greater than the height h of the cylinders 8, which are installed with overlapping D in the vertical plane of the disks 9 Disks 9 and elements 10 form alternating protrusions with cutting edges and grooves.

The disks and elements of both aalks are mounted on horizontal axes 11 using keys 12 (Fig. 3). The circular grooves 13 are located on the periphery of the disks 7 with the same center-to-center distance In, determined by the number of p grooves along the circumference of length nDB. The axis of the grooves of the mixed disks 7 are shifted along the generatrix by

value In / 2, i.e. located on a roll in a checkerboard pattern.

The device operates as follows.

The moving strip 14 is captured by the adjusting tool 8 and the disk 9 of the rolls, which carry out the notching and deformation of the cut metal sections with the formation of segmented

perforations 15, the depth of which is determined by the value d-h, the radius r d / 2, and the step ln. The notches are located on a strip in a checkerboard pattern.

PRI me R 1. The device contains two

roll - upper with a diameter of D 700 mm, made of alternating working disks (b 20 mm, n 24) with a working tool (cylinders) and spacing elements, and a lower roll with d 278 mm s

protrusions having cutting edges and grooves. The rolls are installed with a gap (, 5 mm, their length is mm (Fig. 1), the material of the cutting tool is st. 9 X, distance elements 45.

Key parameters: MM; (mm;; 8 mm;; 05 mm; ,, 15mm; D 0.8 (, 6 mm; and 80 mm (Figs. 1-3).

The width of the strips from art. 3 Kp - 320 mm,

thickness - 2.5 mm, notched pitch in width - 80 mm, in length - 91.6 mm. radius mm, depth d-h 8 mm.

PRI me R 2. The same device, but with parameters: d 45 mm; h 0.8 d

36mm; mm; , 06 (, 15 mm. Radius of cuts, 5 mm; their depth d-h 45-36 9 mm.

PRI me R 3. The same device, but d 20 (mm; h 0,8 d 40 mm; h 1,15 and 32

mm; Bh h + 0.06 (5 23.15 mm; radius d d / 2

- 25 mm; depth d-h1 10 mm.

Formula isobretin and Device for cutting and deformation of notched sections in a strip

material containing a pair of rolls installed with a gap on the horizontal axes, on the periphery of one of which grooves are made, and cylindrical

drical tools with cutting edges, and on the other there are alternating protrusions with cutting edges and grooves, characterized in that, in order to reduce the cost of manufacturing the device when using it for processing strip steel 2-3 mm thick with a content of 0.11- 0.25% carbon, each roll is made in the form of a set of alternating working disks and intermediate distance elements, grooves for working tools are made in the working disks of the upper roll, working tools are fixed in the grooves motionless, the axis of the working tools parallel to the axis of the rolls, the dimensions of the elements of the device are related by the relations ... 20) 5, h 0.8 d,

h (1.05 ... 1.15) b,

,. where d is the diameter of the working tool;

d is the size of the gap between the rolls;

h is the depth of the groove;

b is the thickness of the working disk of the upper roll;

h is the height of the working tool;

Bn is the thickness of the distance element of the lower roll.

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Figure 1