SU1558645A1 - Machine for cutting blanks - Google Patents

Abstract

The invention relates to metal working. The machine allows you to increase the reliability of the cutting wheel when cutting long pieces of various lengths and diameters. For this, the rocker arm 2 with abrasive wheel 3 is connected to a device for adjusting idling and wear of an abrasive disk made in the form of a hydraulic cylinder 10 with a hollow rod. On the hollow rod is fixed piston. A hollow plunger is installed in the hollow stem, the free end of which is provided with a hinge 20 installed in a longitudinal slot 21 ti g 9 connected to the rocker 2. The speed and idle distance of the abrasive disc are adjusted by a coarse adjustment screw, a fine adjustment nut and a throttle with a regulator. A L-shaped clamp, a clamping frame 71 and a movable table with a clamping device are used to clamp and feed the blanks. 3 hp f-ly, 8 ill.

Description

The invention relates to metal working and can be used for precise cutting of long pieces.

The purpose of the invention is to increase the reliability of the machine by eliminating breakages and increasing the service life of the cutting tool when cutting lengthy workpieces.

FIG. 1 shows a machine for cutting blanks, a general view; in fig. 2 - the same, front view; in fig. 3 - the same, top view; in fig. 4 shows section A-A in FIG. 3; in fig. 5 - device for adjusting idling and wear of the abrasive disk; in fig. 6 - the lower axis of the movable table, cut in FIG. T-- L-shaped clamp; in fig. 8 - spring-loaded switching lever of the movable table.

Machine for cutting workpieces includes a frame 1, mounted on the yoke 2 cutting unit, made in the form of an abrasive disk 3, driven in rotation by the engine 4 mounted on the rocker arm 2. The yoke is pivotally fixed on the rack 5 of the bed 1. To the yoke 2, the pneumatic cylinder 6 is pivotally attached with a rod 7. The drive end of the rocker arm 2 is equipped with a counterweight 8. The opposite end of the drive arm of the rocker arm 2 is made with a pull rod 9 perpendicularly attached to it, connected to the base 1 by an idle speed adjustment device and wear and an abrasive disk made in the form of a hydraulic cylinder 10 with a hollow rod 11. The device for adjusting idling and wear of an abrasive disk is covered by a casing 12. A piston 13 is fixed to the hollow rod 11 of a hydraulic cylinder 10. The hydraulic cylinder 10 is pivotally connected to a trunnion 14 mounted on the machine base 1. The piston 15 and the rod 16 of the cavity of the hydraulic cylinder 10 are connected to a throttle with a regulator 17. In the hollow rod 11, a retractable plunger 18 is installed, the free end

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which is made with a supporting part 19 provided with a hinge 20 installed in a longitudinal groove 21 tons 9. The hinge 20 of an extendable plunger 18 is mounted for movement within a length L of a longitudinal groove 21. In the upper part of a longitudinal groove 21, a screw 23 is installed on the thread 22 adjustment. The hollow rod 11 is provided with an external thread 24 with a fine adjustment nut 25 mounted on it. The stroke of the rod 26 of the screw 23 coarse adjustment within the length L and the stroke of the nut 25 fine adjustment within the length h set the length S of the idling of the abrasive disk to the workpieces 27.

To feed the workpieces 27 to the abrasive disk 3, a movable table in the form of an I-beam 29 is mounted on the bed guides 28. The movable table is located near the abrasive disk 3 in position I. The bed guides 28 form a groove P between them, under which the tray 30 is long removal of residues of the cut blanks 27. On the walls 31 of the I-beam 29 there are fixed rollers 32, which are in contact with the side surfaces of the 33 guide rails 28 of the bed. On the upper 34 and lower 35 shelves of the I-beam 29, axes 36 and 37 are fixed with rollers 38 freely mounted on them, which are in contact with the upper 39 and lower 40 surfaces of the guide 28 of the bed. Axis 36 is rigidly fixed on the upper shelf of the I-beam. The axes 37 are provided with annular grooves 41 for fastening screws 42 and are mounted in sleeves 43.

To adjust and fine-tune the axis 37, there are eccentric sections 44 with rollers 38 mounted on them. On the top shelf 34 of the I-beams, horizontal alignment rollers 46 are mounted on the slats 45, and vertical alignment rollers 48 are mounted on the bracket 47, 47 in the front part 49 from the side

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abrasive disk 3, on the top shelf 34 of the I-beam 29 is installed spring-loaded switching lever 50 with roller 51, and on the slats 52 - the rollers 53 of fixation. Racks 54 are rigidly attached to the strips 52, on which a clamping device 55 is mounted, on a sliding current 56 of which a support plate 57 is fixed. On the lower flange 35 of the I-beam, the supports 58 are rigidly fixed, on which is mounted a rail 59 connected to a gear wheel 60 attached to a single axle 61 with a gear 62. The gear 62 is in gear with the rack 63 of the feed cylinder 64.

On both sides of the cutting plane of the abrasive disk 3, the guide 66 and the deflector 67 rollers, which form the groove F for the approach of the abrasive disk, are fixed respectively on the bed guides 28 of the bed and on the tipper 65. The feed roller 66 is fixed on the bolts 68 and the bar 69. Above the supply roller 66 is mounted on the uprights 70 of the presser frame 71. The uprights 70 are mounted in guide sleeves 72 rigidly attached to the bed guide. Racks 70 are connected by a common bar 73, to which are attached a rod 74 of a driving pneumatic cylinder 75 fixed to a frame. A T-shaped clamp 78 is fixed above the withdrawing roller 67 on the rod 76 of the driving pneumatic cylinder 77. The rod 76 is mounted in the guide sleeve 79 connected to the frame.

The rod 76 and the guide sleeve 79 are provided with corresponding longitudinal holes 80 and 81, in which a sliding key 82 is installed. The guide beds are made with dimension holes 83 for installing an adjustable hard stop 84 fixed by fingers 85. The fixed hard stop 84 set the movable table in position II. On the tipper 65 mounted removable stop 86.

The advantage of this design is that the reliability of operation of the device for adjusting idling and wear of the abrasive disk is improved by increasing the rigidity and accuracy.

for triggering the retractable plunger.

The machine is equipped with hoses for the supply of air and oil, air diffusers

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558645b

bodies, remote control, limit switches and turnips time (not shown).

The machine operates in automatic mode (if necessary, it can work in manual mode) as follows.

Before loading, the movable table is in its initial position — in position I at the raised rocker arm 2 with abrasive disk 3. The withdrawable rod 56 of the clamping device 55 W is not, the rod 76 of the driving pneumatic cylinder 77 and the rod 74 of the driving pneumatic cylinder 75 are extended and the L-shaped clamp 78 and clamp frame 71 lifts. The hollow rod 11 of the hydraulic cylinder 10 and the sliding plunger 18 of the device for adjusting idling and wear of the abrasive disk are extended. In accordance with the diameter of the cut blanks 27, the coarse adjustment screw 23 and the fine adjustment nut 25 establish the idling length S of the abrasive disk 3. A fixed stop 84 is installed in the dimensional holes 83, defining the required length of the workpiece.

The stack of blanks is set at 30 a movable table, fed along horizontal alignment rollers 46, under a retracted retractable stem 56 of the pressing device, 55 along the fixation rollers 53, along the roller 51 and stops, resting against the removable stop 86. During dispensing, the bundles of blanks are dispersed - vertical orienting rollers 48, which also supply the workpieces perpendicular to the cutting plane of the abrasive wheel 3. Then the removable stop 86 is removed and pressing the Start button (not shown) will turn the machine into automatic Mode. The engine 4 d of the abrasive disk 3 is turned on, the retractable rod 56 is simultaneously pulled out with the support plate 57 of the pressing device 55, the rods 74 and 76 of the driving pneumatic cylinders of the pressing frame 71 and the L-shaped pressing 78 are pulled and clamping the workpieces. The rod 7 of the driving pneumatic cylinder 6 is extended, and the abrasive wheel 3 is fed to the blanks.

The idling distance S of the abrasive disc 3 passes with an accelerated feed. At the same time, the sliding plunger 18, connected to the thrust 9, is drawn into the hollow rod and, with its support part 19, presses on the nut 25 with an exact

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adjusting the hollow rod 11 of the hydraulic cylinder. The feeding of the abrasive wheel is slowed down. The blanks are cut at a speed specified by the retraction speed of the rod of the hydraulic cylinder 10. In this case, the hydraulic fluid is squeezed through the throttle with the regulator 17 into the rod cavity 16 of the hydraulic cylinder. The feed speed of the abrasive disc during cutting is selected depending on the diameter and material of the workpiece being cut and adjusted by the throttle with the adjuster 17. After the end of the cutting, the abrasive disc 3 returns to the initial position by the driving pneumatic cylinder. At the same time, to speed up the return of the abrasive disk 3 to the initial position, the output of the hydraulic fluid from the rod end 16 of the hydraulic cylinder 10 is free. Then the rod 76 of the drive pneumatic compression plate 77 is pushed out and lifts the G-clamp. Trigger 65 triggers the cut billets for the next operation.

The sliding rod 56 is pulled in with the support plate 57 of the pressing device 55, and the movable table is moved by the feed cylinder 64 on the rail 59 to position II until the adjustable hard stop 84 is installed in the dimension holes 83 of the guide frame, defining the required length of the cut pieces. The sliding rod 56 with the support plate 57 presses the blanks. The rod 74 of the driving pneumatic cylinder 75 of the pressure frame 71 is extended, the workpiece is expanded, and the movable table is fed to the cutting unit. The rods of the pneumatic cylinders 75 and 77 are driven, and the clamping frame 71 and the G-clamp. 78 clamp the workpiece. There is a cutting of blanks. Then the cutting cycle is repeated.

When the rest of the workpieces are less than a predetermined length, when the movable table moves, the roller 51 is released; mounted on the spring-loaded switching lever 50, the movable table moves to position II, the machine is turned off. The rest of the cut blanks 27 falls into the tray 30. With the Return button (not shown), the movable table returns to its original position.

position in position T

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When the abrasive disc 3 din S is removed, the idle is adjusted with a coarse adjustment screw 23 and a fine adjustment nut 25.

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Claims (4)

1. Machine for cutting blanks, on the bed guides of which there is a movable table for feeding workpieces with a clamping device, a cutting unit placed on a rocker arm hinged on a rack, characterized in that, in order to increase the reliability of the machine by eliminating breakages and extending the service life of the cutting tool during cutting lengthy workpieces, the machine is equipped with a device for adjusting idling and wear of the abrasive disk, connected to the frame by means of a cable with a groove located at the opposite end of the core thought perpendicular to it, with the above device made in the form of a hydraulic cylinder with a hollow rod carrying a retractable plunger with a hinge mounted in the groove of the rod, while in the upper part of the groove a coarse adjustment screw is installed, and on the hollow rod there is a thread installed on her nut fine adjustment. 2. The machine according to claim 1, characterized in that the movable table is made in the form of an I-beam, on the walls and shelves of which rollers are installed with the ability to interact with the side and top surfaces of the guide frame. 3. Machine no ttn. 1 and 2, which is characterized by the fact that the upper shelf of the I-beam is equipped with horizontal and vertical orienting rollers. 4. Machine on PP. 1 to 3, characterized in that it is provided with a feed roller with a pressure frame and a discharge roller with a L-shaped clamp mounted on the bed guides to form a groove for the tool. yes if FLB Compiled by N.Finn. Editor N, Tupica Tehred L.Oliynyk. Order 803 Circulation 599 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Thosboooo 50 Fiev Subscription