Arbor chuck for fixing rotatable knife blade

Abstract

The invention discloses a tool fixture which is used for fixing an indexable blade, comprising a tool seat, a fastening bolt and a clamping piece. The tool seat is provided with an assembling part forthe indexable blade, the clamping piece is arranged above the tool seat and is provided with a through hole, the fastening bolt is sheathed in the through hole and is connected with the tool seat bythread, the fastening bolt is sheathed and provided with a compressing spring which is arranged between the tool seat and the clamping piece, the joint of the back end of the clamping piece and the tool seat is provided with a back hook part, the back end of the tool seat is provided with a back projection which is arranged in the back hook part of the clamping piece. The tool fixture which is used for fixing the indexable blade has the advantages of saving the time for changing the blade, increasing processing efficiency and more uniform distribution of the clamping force.

Description

technical field [0001] The invention relates to a mechanical clamping tool holder for cutting, in particular to a tool holder for fixing indexable inserts. Background technique [0002] At present, there are indexable cutting inserts made of cemented carbide materials or ceramic materials in various shapes, such as diamond-shaped, rhombohedral and triangular-shaped indexable inserts, which are usually fixed by mechanical clamping tool holders . There are many types of existing tool holders for fixing indexable blades. For example, the invention patent with the patent number ZL95193314.0 discloses a tool holder for indexable blades. The clamping device of the tool holder loosens the blade Then it is in a free state. At this time, the clamping device may deflect left and right or rotate around its clamping bolt. When installing the blade again, it is necessary to manually adjust the position of the clamping device. Only after the position is adjusted accurately can the clampi...

AI Technical Summary

Problems solved by technology

There are many types of existing tool holders for fixing indexable blades. For example, the invention patent with the patent number ZL95193314.0 discloses a tool holder for indexable blades. The clamping device of the tool holder loosens the blade Then it is in a free state. At this time, the clamping device may deflect left and right or rotate around its clamping bolt. When installing the blade again, it is necessary to manually adjust the position of the clamping device. Only after the position is adjusted accurately can the clamping bolt be tightened and the blade fixed. The operation process is complicated, and it takes a long time to replace the blade, which affects the processing efficiency; in addition, the clamping device is in one point contact or a small arc line contact with the inner wall of the center positioning hole of the blade, and the clamping device acts on the lateral clamping of the blade. The force is concentrated at this point, the area of ​​the force point is small, the stress is concentrated, the force on the blade is uneven, the blade tends to break along the force point, and the entire tool system may be unstable.

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