Numerical control boring machine special for symmetrical revolving flexible boring of track link section and machining method thereof

Abstract

The invention discloses a numerical control boring machine special for symmetrical revolving flexible boring of a track link section and a machining method thereof. The numerical control boring machine comprises a base, wherein the base is provided with a revolving table; a rotating disk is rotationally arranged on the revolving table; a plurality of fixture groups are arranged on the rotating disk along the circumferential direction at equal intervals; a first station, a second station and a third station which are matched with the fixture groups are arranged on the base in sequence around the rotating disk; a fixture unit comprises a fixture body which is fixedly connected with the rotating disk; the fixture body is provided with a lever clamping device, and a positioning seat matched with the lever clamping device. The numerical control boring machine has the advantages of simple and reasonable structure, high working efficiency, high machining accuracy, capability of synchronously machining a left track link section workpiece and a right track link section workpiece, adaptability to different kinds of track link section workpieces, high universality, convenience in position adjustment, low manufacturing cost and small size.

Description

technical field [0001] The invention relates to the technical field of chain rail link processing equipment, in particular to a special numerical control boring machine for chain rail link symmetrical rotary flexible boring processing and a processing method thereof. Background technique [0002] In the field of construction machinery, the machining of shaft holes and casing holes of chain rail links is always a key process in the chain rail industry. Due to the hard material of chain rail links, it is difficult to process them. In addition to the use of special tools on ordinary lathes and general CNC lathes, it must be processed twice, that is, the shaft hole is processed once and the casing hole is processed once, resulting in low work efficiency and the center distance between the shaft hole and the casing hole. Difficult to guarantee due to double clamping. With the development of science and technology, single-head boring machines, double-head boring machines, rotary ...

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Problems solved by technology

Among them, the advantages of the single-head boring machine and the double-head boring machine are that the structure is relatively simple and the manufacturing cost is relatively low. The disadvantage is that: due to the concentration of the processing process, the boring tool needs to complete the rough and fine machining of the shaft hole and the sleeve hole at one time, resulting in The durability is low and the service life is short. Moreover, single-head boring machines and double-head boring machines are usually only suitable for a single type of processing occasions, and cannot process different types of workpieces, resulting in relatively large use limitations.

However, the above-mentioned "a kind of machine tool for the finishing of track chain rail links" has the following defects: first, because the dual-spindle power head is set at each station, the structural setting is more complicated, and the adjustment is more inconvenient; second, the actual In the process of processing, in order to ensure the sealing performance of the chain rail link assembly, it is usually necessary to process a stepped hole at the position of the shaft hole to place the sealing ring or other sealing parts. However, there is no need to process step holes during trepanning machining, so only one rough and finishing machining is required during trepanning machining. There are three stations for fine boring and fine boring. Each station can process the left and right chain rail sections at the same time. When the workpiece rotates with the rotary table, the shaft hole and sleeve hole of the chain rail section are rough Processing and finishing, resulting in a serious waste of resources; third, drilling refers to the processing of the bolt holes of the chain rail link, so that the drilling station needs to be set perpendicular to the rotary table during design, resulting in a particularly large volume of the entire machine tool

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