Machining device and method for dovetail groove of jaw plate of seamless steel tube cold-drawing machine

Abstract

The invention discloses a machining device and method for a dovetail groove of a jaw plate of a seamless steel tube cold-drawing machine. The machining device comprises a bearing frame arranged on oneside face of a horizontal planer workbench, two supporting plates, a supporting cross beam, an adjusting screw, and a positioning plate; the two supporting plates are arranged in parallel; each supporting plate is in a right-angle sector shape; the upper part of one side edge of each supporting plate is a circular arc; the lower part of one side edge of each supporting plate is a vertical plane;the other side edge of each supporting plate is an inclined plane forming an acute angle with the side edge, and the degree of the acute angle is 11-20 degrees; the supporting cross beam is arranged between the upper parts of two supporting plates; the two ends of the supporting cross beam are connected to inner side surfaces of the right-angled parts of the two supporting plates; an adjusting screw hole is formed in the middle of the supporting cross beam; the adjusting screw is arranged in an adjusting screw hole in the middle of the supporting cross beam; and the positioning plate is vertically connected to the lower parts of the fan-shaped cambered surfaces of the two supporting plates and is fixed to the side face of a workbench of the horizontal planer through bolts. The machining device realizes accurate and rapid correction and positioning of planing machining to the jaw plate dovetail groove, synchronously optimizes and perfects the dovetail groove planing machining process and can meet the technical requirement for jaw plate dovetail groove machining.

Description

technical field [0001] The invention relates to seamless steel pipe processing equipment, in particular to a processing device and method for a dovetail groove of a jaw plate of a seamless steel pipe cold drawing machine. Background technique [0002] Seamless steel pipes are common metallurgical metal products. After the seamless steel pipe is processed by high-temperature extrusion or piercing deformation, it usually adopts two methods of cold drawing and cold rolling, and is deformed at room temperature to make a finished seamless steel pipe that meets the relevant technical requirements. The cold-drawn processing technology of seamless steel pipes was produced before the cold-rolling processing technology, because the concentricity (coaxiality, straightness) of cold-drawn seamless steel pipes is good, and the ability to eliminate defects remaining in hot processing such as surface spots and pits Strong, simple and compact equipment structure, low investment cost and oth...

AI Technical Summary

Problems solved by technology

[0007]1) The jaw plate is not easy to clamp, and there are potential safety hazards: due to the particularity of the shape of the jaw plate, when the jaw plate is processed by a horizontal (bull head) planer, Machine flat-nose pliers are used for clamping. Due to the need of dovetail groove planing processing technology, when clamping, the center of gravity of the jaw plate does not coincide with the clamping (positioning) point, and the fan-shaped long side of the jaw plate is inclined at about 15 degrees. Under the action of gravity, it is easy to cause movement or even overturning. There are certain hidden dangers of occupational health risks, and there are also certain hidden dangers of accidents for planing equipment.

[0008]2) The hoisting machinery takes up a long time during planing, which is not conducive to the operation in the same work area: due to the hidden danger of overturning of the jaw plate, in order to ensure the safety of equipment and operators Safety, usually use the hoisting machinery suspension method for auxiliary support, that is, after the hoisting machinery lifts the jaw board machine (horizontal planer), it still uses wire rope suspension, on the one hand, through the up and down fine adjustment of the wire rope, The position correction of the dovetail groove plays a certain auxiliary role. On the other hand, after the position is corrected and the vise is clamped and positioned, it plays a certain protective role. Once the clamping point is abnormal, due to the protective effect of the wire rope, the jaws will The board will not overturn, so the hoisting machinery will be occupied for a long time during the planing process of the dovetail slot, which will affect the production of the entire machining area

[0009]3) The clamping and correcting position of the jaw plate is not easy: especially for repaired parts after surfacing welding, since the upper opening of the dovetail groove is left over from welding, it is difficult to level and align It is even more difficult. The operator can only rely on the pre-tightened working condition of the flat-nose pliers, knock on the top of the jaw plate, and realize the alignment operation through the change of the angle, and the operation efficiency is not high.

[0010] To sum up, although the existing planing preparation and processing methods of the dovetail groove of the jaw plate of the cold drawing machine can meet the technical requirements, there are still some problems such as safety and efficiency. Insufficient aspects, etc., urgently need to improve the operation efficiency, reduce the occupancy of lifting machinery, and meet the goal of orderly production in the processing area through technical improvement of the existing processing technology and methods on the basis of ensuring safety.

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