Ultrasonic tool holder

Abstract

The invention relates to an ultrasonic tool handle, comprising a tool handle, a transducer arranged on the tool handle, and a secondary side magnetic ring coil and a primary side magnetic ring coil for supplying power to the transducer; the The front end cover of the transducer is connected with a cutter body through a spring chuck, and is limited by a locking nut; the secondary side magnetic coil is set in a circular structure and fixed on the cutter handle; the primary side The magnetic ring coil is gap-fitted with the secondary side magnetic ring coil and is arranged separately relative to the tool handle; wherein the primary side magnetic ring coil is arranged below the knife slot on the tool handle, and the primary side The magnetic ring coil is set as an arc-shaped structure with a central angle greater than 70° and less than 110°. In the present invention, the position of the tool groove on the original standard tool handle is not changed, and the tool magazine structure and the tool grasping mechanism of the original machine tool can be used to automatically change the tool of the ultrasonic tool handle, thereby reducing the production cost of the enterprise.

Description

technical field [0001] The invention belongs to the technical field related to ultrasonic assisted machining, and in particular relates to an ultrasonic tool holder. Background technique [0002] As an effective composite machining method for machining difficult-to-machine materials, ultrasonic-assisted machining has been widely used in aerospace, precision instruments, optical parts, micro parts, brittle materials, precision molds and other fields. [0003] Among them, the power supply methods of the ultrasonic tool holder mainly include the contact slip ring power supply method and the non-contact magnetic ring power supply method. Among them, the slip ring rotation speed is limited in the contact slip ring power supply method, so that the ultrasonic knife using the contact slip ring power supply method is limited. The shank is not suitable for high-speed rotary processing with a rotation speed exceeding 10,000 revolutions, and the ultrasonic tool shank of the non-contact ...

AI Technical Summary

Problems solved by technology

[0003] Among them, the power supply mode of the ultrasonic knife holder mainly includes the contact slip ring power supply mode and the non-contact magnetic ring power supply mode. The slip ring speed is limited in the contact slip ring power supply mode. The shank is not suitable for high-speed rotary machining with a speed exceeding 10,000 revolutions, and the non-contact slip ring power supply method solves the limitation of the speed

[0004] To this end, people have carried out continuous research and proposed the HSK ultrasonic tool handle structure that can automatically change tools as disclosed in the Chinese patent application (application number: 2016109282750). The primary side magnetic ring coil is not specifically disclosed in the ultrasonic tool handle structure The matching relationship with the secondary side magnetic coil, and it can be seen from the diagram that the primary side magnetic coil in the above-mentioned ultrasonic tool handle structure adopts a full-ring structure, so that the ultrasonic tool handle structure needs to be able to realize the function of automatic tool change The standard tool holder is used to move down the tool groove of the automatic tool change, which makes the tool magazine structure and the tool grab mechanism on the machine tool used for tool change must be structurally modified, which will increase the equipment cost, and the above-mentioned ultrasonic tool holder is universal Poor performance, difficult to achieve large-scale application

[0005] For example, in the non-contact energy transmission ultrasonic processing device disclosed in the Chinese patent application (application number: 2014102121621), the primary side magnetic ring coil in the ultrasonic processing device adopts a one-third ring design, which solves the problem of downward movement of the sipe. In the processing device, the size of the end of the primary winding, the magnetic ring, and the protective shell in the circumferential direction is close to or even exceeds one-half of the full ring, which limits the structure and form of the tool grabbing mechanism, and it is difficult to realize without modifying the tool grabbing mechanism of the machine tool. Automatic tool change

[0006] To sum up, in order to achieve automatic tool change in the current traditional ultrasonic tool holder using non-contact slip ring power supply, it usually needs to modify the tool magazine structure and tool grabbing mechanism of the existing machine tool, which will increase the production cost and cannot meet the requirements. Enterprise needs