Gear milling clamp suitable for various automobile steering device rack pistons

Abstract

The invention relates to a gear milling clamp suitable for various automobile steering device rack pistons. The gear milling clamp suitable for various automobile steering device rack pistons comprises a guide shaft. An arc-shaped jaw is installed on the guide shaft in a sliding fit mode. An adjustment pad is arranged at the bottom of the clamp and can adjust the height of a workpiece. A radial positioning block is arranged on the opposite side of the guide shaft. The guide shaft and the radial positioning block are used cooperatively to carry out radial positioning on the workpiece. An oil cylinder piston rod is arranged on the opposite side of the arc-shaped jaw. An axial clamping air cylinder is arranged in the axial direction of the workpiece. An axial positioning block is arranged onthe opposite side of the axial clamping air cylinder. The gear milling clamp is suitable for gear milling of automobile steering device rack pistons in various specifications, and can be used in cooperation with an automatic feeding and discharging structure on a rack gear milling machine. Meanwhile, after the workpiece is replaced, the clamp can be rapidly adjusted to the machining position without the need for trial cut adjustment.

Description

technical field [0001] The invention relates to a jig for gear milling processing applied to a rack gear milling machine, and is particularly suitable for a gear milling processing jig for a gear rack piston of an automobile steering gear with multiple varieties and small batches and an automatic loading and unloading structure. Background technique [0002] In the field of existing automotive steering gear rack piston gear milling (milling plane, side, milling teeth, chamfering, edge trimming, a total of 5 stations), for some small and medium-sized enterprises, generally choose a rack milling machine The scheme of machining a workpiece by gear machining; however, some enterprises need to process a large variety of automobile steering gear rack pistons but a small number, and at the same time require the gear milling machine to be equipped with an automatic loading and unloading structure. However, due to the particularity of the structure of the rack gear milling machine, t...

AI Technical Summary

Problems solved by technology

[0002] In the field of existing automotive steering gear rack piston gear milling (milling plane, side, milling teeth, chamfering, edge trimming, a total of 5 stations), for some small and medium-sized enterprises, generally choose a rack milling machine The scheme of machining a workpiece by gear machining; however, some enterprises need to process a large variety of automobile steering gear rack pistons but a small number, and at the same time require the gear milling machine to be equipped with an automatic loading and unloading structure

However, due to the particularity of the structure of the rack gear milling machine, the particularity of the installation method of the gear milling cutter (the gear milling cutter is driven by the end face key or pin, so it cannot move on the cutter bar), and the particularity of the rack piston of the automobile steering gear (Instructions attached figure 2 The middle workpiece 3 is characterized by: the left and right outer circles, the left and right end faces, the inner hole, and the attached figure 1 The milled flat part on the right side of middle workpiece 3 is the processed surface, and the other positions are all non-processed surfaces), and the customer requires different milling cutters to process parts of various specifications (instructions attached figure 1 The milling position on the right side of the middle workpiece 3 changes at any time, and the size of the workpiece changes) and the fixture can cooperate with the automatic loading and unloading structure (after the required parameter setting is completed, the manual only needs to click the "cycle start" button to complete the processing of all parts in the bin) , how to reduce the cost of trial cutting and the labor intensity of operators on the premise of ensuring high machining accuracy of rack milling has become a difficult point hindering the design of fixtures for gear milling of automotive steering rack pistons

[0003] The jig for milling gears of the automotive steering gear rack piston designed in the patent ZL 201520278781.0 "Automotive Steering Gear Rack Milling Jig" is a fixture designed for a certain type of automotive steering gear piston. All manual loading and unloading, positioning and cleaning, Therefore, manual labor does not need to consider the interference problem, does not need to consider the positioning problem, but the replacement of parts is not applicable, and it cannot be applied to the rack gear milling machine with automatic loading and unloading structure

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