SU1344449A1 - Arrangement for machining internal surface of welded tubes - Google Patents

Abstract

The invention relates to metal cutting by pressing equipment, in particular to the removal of internal burr at the ends of pipe welded billets, for example tubes for roller conveyor belts. The aim of the invention is to increase the reliability and simplify the design while increasing the deburring performance at the ends of the pipes by automating the operation. When processing the pipe 21 installed on the lodgements 20 by moving the press ram down, the sliders 3 move in the direction of the pipe axis. The mandrels 6 associated with the sliders also move in the longitudinal direction and simultaneously rotate due to the guide pins 8 installed in the housing 7 that are in contact with the inclined No. 1 slots 9 of the mandrels 6. At the same time, mounted on the mandrels 6 cutting elements remove the bur from the inside of the pipe. 3 il. h C /) OO 4; 4: 4 4 OO

Description

The invention relates to metal cutting by pressing equipment, in particular, removal of internal burr at the ends of pipe welded billets, for example tubes for roller conveyor belts, and can be used in engineering plants.

The aim of the invention is to raise - IQ have an opposite angle of inclination.

reliability and simplification of the Construction with improved deburring performance at the ends of the pipes, due to automation of work.

FIG. 1 shows the proposed ig cut-off flow from the welding device, obgii view, figure 2 is a longitudinal section of the left half of the device; on fig.Z - section aa in figure 2. A device for treating the inner seam with insertion knives 13. Burr (sagging) is cut off from both ends of the pipe. Since the pipe being machined has a wide diameter tolerance, the surface of the siar pipes consists of a 20-core mandrel to maximize base 1 with guides 2 fixed on it, in which they are mounted with the possibility of reciprocating horizontal movement.

to the diameter, and the knives are spring-loaded, for example, by hydroplastic 14. During the pressing of the press ram up, the slider 3 wedges 18 move backward, together

wedge slider 3, each of which 25 with them move back the mandrel 6,

rotate in the opposite direction and release the pipe. The released pipe is removed from the treatment zone by a drop mechanism. The process is repeated. 30 Since the direction of rotation of the cutting mandrels is opposite to each other, and the cutting force is also directed in opposite directions, there is no need to pre-clamp the pipe before machining is connected by a hemispherical hinge 4 and detachable lids 5, with bearings 6. The mandrels 6 are mounted in the housing 7 and provided with guide fingers 8, which interact with inclined grooves 9, made in the mandrels 6. Moreover, the grooves 9 in the mandrels 6 are made with the opposite inclined direction (for example, in the left mandrel e under 1) the slot groove from left to right, while in the right - from right to left), the mandrels 6 are equipped with cutting parts 10, made in the form of a cage 1 1 with grooves 12, in which cutting elements 13 (knives) are made, with an inlet cone, spring-loaded gaskets 14. The cutting elements 13 are secured with an end washer 15 and are limited to a split ring 16, the wedge slider 3 is made with grooves 17 in which: installed. a wedge 18 connected by the sliders 3 to the upper plate 19, which is connected to the press slider (not shown).

On the base 1, the cradle 20 is fixed for setting: and the workpiece, for example a pipe 21.

The device works as follows.

The welded pipe with a feeder (not shown) is automatically fed into the machining area on the cradle 20. When the press ram moves down, the wedge 18 moves the sliders 3 right to the left.

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This, and the placement of knives across the entire diameter of the mandrel, eliminates the need for fixing the pipe in a certain position with respect to the seam. All this allows you to automate the processing process and increase productivity.

Claims (1)

Invention Formula A device for treating the inner surface of welded pipes, comprising a base, a housing and a drive mandrel mounted in the housing, characterized in that, in order to increase productivity and improve quality, the drive of the mandrels is made in the form of a plate, provided with channels, the mandrels are fitted with slides opposite oblique grooves and connected with hemispherical hinges; in the mandrels, oppositely directed grooves, wedges and left - right. The sliders 3, through the hinges 4, transfer pressure to the mandrels 6. The mandrels 6 move respectively right to the left and left to the right and simultaneously rotate in different directions, as they are guided in the housings 7 by the guide pins 8 along inclined grooves 9 of the mandrels 6, which Since the cutting part 10 of the mandrels 6 has an inlet cone c /, the blank (pipe) is centered, and with further downward movement of the press leg seam with insertion knives 13. Burr (sagging) is cut from both ends of the pipe. Since the pipe being machined has a wide tolerance in diameter, renal diameter, and the knives are spring-loaded, for example, by hydroplastic 14. During a press ram up, the slider 3 is wedged 18 are moved back, together rotate in the opposite direction and release the pipe. The released pipe is removed from the treatment zone by a drop mechanism. The process is repeated. 0 Since the direction of rotation of the cutting mandrels is opposite to each other, and the cutting force is also directed in opposite directions, there is no need to pre-clamp the pipe before machining5 0 five 0 five This, and the placement of knives across the entire diameter of the mandrel, eliminates the need for fixing the pipe in a certain position with respect to the seam. All this allows you to automate the processing process and increase productivity. Invention Formula A device for treating the inner surface of welded pipes, comprising a base, a housing and a drive mandrel mounted in the housing, characterized in that, in order to increase productivity and improve quality, the drive of the mandrels is made in the form of a plate, provided with channels, the mandrels are fitted with slides opposite oblique grooves and connected with hemispherical hinges; in the mandrels, oppositely directed grooves, wedges 313A44494 The plates are placed in opposite directions of the half-poles, and provided with pallet-shaped grooves of the sliders, and the base is placed in the opposite direction with guides in which there are guides of the mandrels. 12 1 fO W cpueJ 687 17 78 thirty