Thread processing tool for non-standard outer-hexagonal bolt

Abstract

The invention discloses a thread processing tool for a non-standard outer-hexagonal bolt. The thread processing tool comprises a bottom plate; the bottom plate is provided with a base; a chute in a length direction is arranged at the middle part of the base; second rotation seats, which are provided with a bidirectional screw rod, are arranged at the two ends of the base respectively; two slidingseats in threaded connection are arranged at the upper end, in the chute of the base, of the bidirectional screw rod, are symmetrically arranged relative to the center of the bidirectional screw rod and are provided with clamping blocks respectively; a supporting plate is arranged at the middle part of the back end of the bottom plate; first rotation seats are arranged at the upper end and the lower end of the supporting plate respectively and are internally provided with a threaded rod; the threaded rod is provided with a supporting plate which is in threaded connection; a sliding rod is fixed at the middle part of the front end of the bottom plate; and the supporting plate is in sliding connection with the sliding rod. The thread processing tool provided by the invention adopts the clamping blocks with 120-degree openings by utilizing the characteristic of a regular hexagon at the head of a bolt, realizes clamping of outer-hexagonal bolts in different sizes, avoids troubles aiming toeach non-standard bolt manufacturing clamp and saves the tool manufacturing cost.

Description

technical field

[0001] The invention relates to the field of bolt processing, in particular to a thread processing tool for non-standard external hexagonal bolts. Background technique

[0002] In the production process of bolts, thread processing is an important link. There are many methods for processing bolt threads. The common ones are turning, milling, grinding, tapping, threading and rolling. Standard bolts are usually threaded. The head of the bolt is fixed. The common fixing method is to put the bolt into the hexagonal hole that matches the head of the standard bolt. This fixing method is simple and efficient, and is suitable for the clamping of standard bolts in batches. The more non-standard bolts are produced, because non-standard bolts are made according to customer needs, so unlike standard bolts, which can be mass-produced, if each non-standard bolt is processed, a hexagonal hole fixture that matches its head will be made It will increase a lot of cost, and the...

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