A local annealing positioning device for fasteners

Abstract

The invention provides a local annealing positioning device of a fastener. The local annealing positioning device comprises a fixed part, a movable part in sliding fitting with the fixed part, and an upper measuring part, wherein a support positioning hole is formed in the movable part; a measuring positioning hole corresponding to the support positioning hole is formed in the fixed part; the upper measuring part is positioned in the measuring positioning hole; a scale mark is arranged at the side end of the upper measuring part; the local annealing positioning device further comprises a rotating part; the rotating part includes a motor; the axle wire of an output shaft of the motor is collinear with the axle wire of the support positioning hole; the top end of the output shaft of the motor is connected with a clamping piece; and the clamping piece fits the fastener in shape. When the fastener is locally annealed, the operation is simple; the annealing size preciseness of the fastener is effectively improved, the width consistency of locally annealed parts on the fastener is satisfied, and the annealing position and the width size can be quickly adjusted at any time; the device has good universality, and is easily disassembled; and when the processing pass percentage is improved, the investment cost is reduced.

Description

technical field [0001] The invention belongs to the field of annealing processing, in particular to a local annealing positioning device for fasteners. Background technique [0002] In the field of aerospace, the requirements for fasteners are almost strict, and for those fasteners fastened to special positions, a local annealing process will be required in the manufacturing process to meet the deformation requirements of specific positions of the fasteners. [0003] The fasteners used in aerospace that require local annealing have special requirements for the starting position of the local annealing of the rod part of the fastener, the annealing width and the dimensional consistency due to its installation performance requirements and service performance requirements. This requires that the annealing position and annealing width of the stem must be strictly controlled within a certain range, so the annealing method of the stem is particularly important. In the development ...

AI Technical Summary

Problems solved by technology

In the development process of fasteners that require partial annealing, high-frequency heating coils are often used to locally anneal the rods, while the traditionally used device connects the workpiece to the motor spindle, and then puts it into the coil to rotate and heat the workpiece. The coaxiality and concentricity of the motor spindle and the coil axis will be poor; and when rotating and heating in the coil, the trajectory of the workpiece will not be cylindrical, which will cause one side of the rod of the fastener to always be far away from the coil. The annealing temperature on both sides is always inconsistent; there is no shielding measure for the part of the workpiece that does not need to be annealed during heating, and the annealing width cannot be controlled, etc. The above reasons lead to the product performance not meeting the requirements

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