A kind of high-efficiency indexable compound reaming drill and its processing method and using method

Abstract

The invention discloses an efficient indexable composite reamer and a machining method and using method of the efficient indexable composite reamer. The efficient indexable composite reamer comprises a cutter handle assembly, and a mounting hole and a central screw hole are formed in the centers of the two ends of the cutter handle assembly respectively; a sinking hole is formed in the end of the central screw hole, and a cooling channel is formed between the mounting hole and the central screw hole; a cutter rod assembly and a pull screw are mounted in the mounting hole and the central screw hole respectively; two flange discs are arranged on the outer portion of the cutter handle assembly, and two locking screw holes are formed in the top end of the cutter handle assembly; locking screws are connected into the locking screw holes through threads; and the two locking screw holes are arranged on the two sides of one flange on the side close to the cutter rod assembly. The rigidity of cutters is improved, the flexibility requirement of the cutters is reduced, the number of the cutters is decreased, and blades made of proper materials are selected for improving the requirement for wear resistance and fatigue resistance; and meanwhile, the machining difficulty is reduced, and operability, the economical efficiency and the machining efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a high-efficiency indexable composite reaming drill, a processing method and a using method thereof. Background technique [0002] At present, when using conventional hole reaming processing methods to process stepped deep holes on workpieces, the conventional method is to use several different tools to process holes with different diameters one by one, generally starting from the smallest diameter hole one by one, but the traditional processing method difficult to process as figure 1 There are six main reasons for the stepped deep hole with an accuracy of IT9 level shown. One is that the fatigue resistance of the machining tool is poor. The force of the tool changes greatly; the second is that the hole size after processing is not easy to control, leaving quality risks. The reason is that the tool bears a large radial force, and the tool is easy to shake; the thi...

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Problems solved by technology

[0002] At present, when using conventional hole reaming processing methods to process stepped deep holes on workpieces, the conventional method is to use several different tools to process holes with different diameters one by one, generally starting from the smallest diameter hole one by one, but the traditional processing method difficult to process as figure 1 There are six main reasons for the stepped deep hole with an accuracy of IT9 level shown. One is that the fatigue resistance of the machining tool is poor. The force of the tool changes greatly; the second is that the hole size after processing is not easy to control, leaving quality risks. The reason is that the tool bears a large radial force, and the tool is easy to shake; the third is that the processing tool is easy to wear, mainly because the surface of the opening groove has hardening phenomenon, and the hardness is uneven; the fourth is that the number of tools used is large, the processing efficiency is low, The processing cycle is long and the processing cost is high, mainly because this type of hole has many steps and a large length-to-diameter ratio, and some holes even reach 15 times; the fifth is that the cooling effect during the processing is poor, resulting in poor heat dissipation of the workpiece or tool. Affect the machining accuracy; Sixth, the overall rigidity of the machining tool is poor, especially the tool with a relatively large length and diameter. If the high-speed steel tool is used, it will be easy to bend, and if the cemented carbide tool is used, it will be easy to break.

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