Multi-purpose combined hollow shaft internal cooling motorized spindle

Abstract

The invention discloses a multipurpose combined hollow shaft internal cooling motorized spindle which comprises a hollow shaft, a shell is sleeved outside the hollow shaft, a combined clamping device is arranged at the front end of the hollow shaft, and a disc-shaped cutter and a rod-shaped cutter are arranged at the shaft end, extending out of the shell, of the front end of the hollow shaft; and the tail end of the hollow shaft is provided with a lengthening shaft extending out of the rear end of the shell, the tail of the lengthening shaft is connected with a high-speed rotating water connector and provided with internal threads, and the high-speed rotating water connector is provided with an external threaded rod which is fixed to the tail of the lengthening shaft in a threaded mode. The cutters are fixed through the combined clamping device, diversified machining requirements are met, cooling liquid enters the hollow shaft from the tail of the hollow shaft and flows out of the cutters through the arrangement of the high-speed rotating water connector, the cutters are directly and accurately cooled, and due to the fact that the cooling liquid flows out from the inside of the shaft, machining scraps can be effectively prevented from entering a clamping chuck, and damage caused by scraps on the contact conical wall of the elastic chuck and the motorized spindle is avoided.

Description

technical field [0001] The invention relates to an electric spindle, in particular to a multipurpose combined hollow shaft inner cooling electric spindle. Background technique [0002] In the manufacturing industry, when processing and producing products, it is often necessary to cut, polish, drill, engrave and mill semi-finished products, and then need corresponding processing equipment; traditionally, the equipment is a single-purpose configuration, multi-purpose There is a gap in the configuration, a single device cannot meet the user's multi-process processing requirements, and there are defects such as complex structure, poor adjustability, narrow application area, inconvenient disassembly and assembly, and high price; The technical problem to be solved by the main shaft is to provide a machine with simple structure, stable performance, convenient disassembly and assembly, and wide application. [0003] The electric spindle is a technology that integrates the machine t...

AI Technical Summary

Problems solved by technology

[0005] 1. At present, when the electric spindle is processing the workpiece, it can only process one process. For the workpiece that requires multi-process combination processing, it can only change different electric spindles, or add a tool between the electric spindle and the tool. The combined processing requirements are realized through different tool holders, but due to the transition connection of the tool holder between the tool and the electric spindle, the accumulated error causes the machining accuracy of the tool to decrease

[0006] 2. During the drilling and milling process of the electric spindle, when the external coolant is cooling, it is inevitable that there will be processing debris entering the inside of the clamping chuck, causing damage to the contact cone wall between the elastic chuck and the electric spindle, and directly It affects the machining accuracy of the tool, resulting in a decrease in the accuracy of the workpiece and a decrease in the roughness of the machining, resulting in damage and scrapping of the electric spindle

[0007] 3. There are generally several water pipes distributed around the electric spindle tool for the external coolant, which increases the distribution volume of the electric spindle tool. When processing in a limited space or with a special shape, it is difficult for the coolant to reach the cutting edge of the tool, which directly affects the tool life and Workpiece quality

[0010] 6. The external coolant has no heat dissipation effect on the rotor heating and bearing heating inside the electric spindle

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