Chain-type tool magazine

Abstract

The invention relates to the field of machining instruments, especially to a chain-type tool magazine. The chain-type tool magazine comprises a workbench, a first groove and a second groove are formedin the top of the workbench, the first groove is formed by connecting two parallel transverse grooves and two opposite semicircular grooves end to end, the second groove is located in the center of the inner ring of the first groove, a tool magazine assembly is arranged in the first groove, a driving assembly is arranged on the bent side of the inner ring of the first groove, and an adjusting assembly is arranged at the top of the second groove. By arranging driving sleeves, an eccentric wheel makes rotation of a central connecting disc around a path under the action of the eccentric wheel, so that one of the five driving sleeves is pushed and the other four driving sleeves are pulled at the same time, a movable drive shaft is pressed and clamped from far to near before entering a clamping notch, certain deflection of tool aprons during operation due to the fact that the tool aprons connected through chains is avoided, the clamping matching performance of the tool aprons and the gearis guaranteed with high precision, and the deflection phenomenon is avoided.

Description

technical field [0001] The invention relates to the field of processing instruments, in particular to a chain-type tool magazine. Background technique [0002] The chain tool magazine is a type of tool magazine in CNC machine tools. It has a large tool capacity, but the positioning accuracy of the tool magazine is low. Compared with the disc guide rail, the chain tool magazine has the advantage of large tool capacity, but the traditional chain tool magazine The chain structure of the library: the tool is equivalent to being placed on the chain, and the chain needs to move back and forth, and there is no way to realize the rigid support of the entire chain; that is to say, for the chain tool library, the chain is both the carrying system and the transmission system. This determines that the chain-type tool magazine has obvious defects: poor mechanical rigidity and large transmission clearance, resulting in poor positioning accuracy of the tool magazine; in order to improve th...

AI Technical Summary

Problems solved by technology

[0002] The chain tool magazine is a form of tool magazine in CNC machine tools. It has a large tool capacity, but the positioning accuracy of the tool magazine is low. Compared with the disc guide rail, the chain tool magazine has the advantage of large tool capacity, but the traditional chain tool The chain structure of the magazine: the tool is equivalent to being placed on the chain, and the chain needs to move back and forth, so there is no way to realize the rigid support of all the chains; that is to say, for the chain tool magazine, the chain is both a bearing system and a transmission system. This determines that there are obvious defects in the chain tool magazine: poor mechanical rigidity and large transmission clearance, resulting in poor positioning accuracy of the tool magazine; in order to improve the positioning accuracy, a complex inspection and control circuit is required to achieve fast and accurate positioning. The chain tool magazine still has the following problems in actual use:

[0003] Since the chain is not only the bearing system but also the transmission system, in the rotary transmission system, when passing through the turning point, when the existing gear disc drive mode is driven, the tool holders are connected with each other by chains, so that the tool holders are in operation. There is a certain deflection at the time, resulting in no guarantee of high precision in the fit between the tool holder and the gear, and there is a deflection phenomenon, and the existing tool holder often needs to be disassembled when the chain tool magazine needs to process workpieces of different specifications. When replacing accessories, if the general bolt fastening method is used, it is not conducive to the convenient and direct disassembly of the tool holder. At the same time, during the long-term use, since the chain tool magazine is generally a relatively large device, the driving device used for matching is generally The driving effect is relatively strong, which leads to loosening of the chain connecting parts. Since the chains cannot be strongly tightened with each other, when the transmission system rotates the tool holder to the middle of the straight line, the tool holder is offset and is not in the ideal vertical position. state, which hinders the snap-fitness of the tool holder and the gear during the next operation

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