CN203541771U

CN203541771U - Trapezoid internal thread turning tool

Info

Publication number: CN203541771U
Application number: CN201320684013.6U
Authority: CN
Inventors: 贾丽芳; 钱文贵
Original assignee: Anhui Jingling Machine Tool Manufacturing Co Ltd
Current assignee: Anhui Jingling Machine Tool Manufacturing Co Ltd
Priority date: 2013-11-02
Filing date: 2013-11-02
Publication date: 2014-04-16
Anticipated expiration: 2023-11-02

Abstract

The utility model provides a trapezoid internal thread cutting tool which comprises a tool bar (1), a turning tool body (2), a tool bore (3) and a jackscrew (4). The trapezoid internal thread cutting tool is characterized in that a concave platform (8) is arranged on the outer diameter of the side, corresponding to the tool bore, of the tool bar. A dovetail groove (7) is formed in the concave platform. A sliding block (5) is connected to the dovetail groove in a matched mode. By the adoption of the technical scheme, the trapezoid internal thread cutting tool is simple in structure and convenient to machine, the sliding block is convenient to mount and dismount, the phenomena of shaking and cutter relieving in the machining process are eliminated, the surface accuracy of threads is good, and machining efficiency is high.

Description

A kind of lathe tool for trapezoidal inner threads

Technical field:

The utility model relates to a kind of turning cutting tool, particularly a kind of lathe tool for trapezoidal inner threads.

Background technology:

Trapezoidal thread be widely used and transmission accuracy higher, if the long lead screw on lathe and slide plate leading screw etc. is all to adopt trapezoidal thread transmission, when turning trapezoidal internal thread, because threaded portion is long and aperture is less, knife bar length also lengthens thereupon, because knife bar is longer, in processing, because rigidity is not enough, produce the phenomenons such as shake, cutter relieving, cutting surface roughness is poor and efficiency is low, the serious quality that has influence on product.

Utility model content:

The defects such as the purpose of this utility model is exactly in order to overcome in internal thread machining process, and arbor stiffness is not enough and produce shake, cutter relieving, causes thread surface roughness poor, and machining accuracy is low, and efficiency is low, and a kind of lathe tool for trapezoidal inner threads providing.

To achieve these goals, the utility model has adopted following technical scheme:

A kind of lathe tool for trapezoidal inner threads, it comprises: knife bar, lathe tool, tool bore, jackscrew, lathe tool is contained in tool bore, jackscrew compresses lathe tool, it is characterized in that: the one end corresponding to tool bore on knife bar external diameter is provided with concave station, the baseplane of concave station is parallel with the axis of tool bore, and concave station is provided with dovetail, the axis of dovetail is vertical with the Axis Cross of knife bar, is connected with slide block on dovetail.

Described slide block outer end is arc surface, and the another side corresponding with arc surface is provided with dovetail groove, and dovetail groove is parallel with the arc-plane of slide block both sides, and the sliding accessory of dovetail groove and dovetail connects.

Owing to having adopted technique scheme, make the utility model simple in structure, easy to process, slide block adopts sliding accessory to connect, easy installation and removal, slide block plays the effect of supporting knife bar, has effectively solved knife bar and has produced the phenomenons such as shake, cutter relieving, and thread surface precision and working (machining) efficiency are increased substantially.

For more detailed explanation the utility model, following accompanying drawing provides a most preferred embodiment.

Accompanying drawing explanation:

Fig. 1 is schematic diagram of the present utility model;

Fig. 2 is the A-A view of Fig. 1.

The specific embodiment:

As Fig. 1, shown in Fig. 2, a kind of lathe tool for trapezoidal inner threads, it comprises: knife bar 1, lathe tool 2, tool bore 3, jackscrew 4, lathe tool is contained in 3 li of tool bores, jackscrew compresses lathe tool, it is characterized in that: the one end corresponding to tool bore on knife bar external diameter is provided with concave station 8, the axial centre plane parallel of the plane of concave station and tool bore, concave station is provided with dovetail 7, the axis of dovetail is vertical with the Axis Cross of knife bar, on dovetail, be connected with slide block 5, the outer end of slide block is arc surface, the one side corresponding with arc surface is provided with dovetail groove (6), dovetail groove is parallel with the arc-plane of slide block both sides, the sliding accessory of dovetail groove and dovetail (7) connects, as shown in Figure 2, cutting edge roundness is to the distance on slide block top, equal the radius size of screwed hole, cutter oppositely cuts, the cutting force producing upwards, the top of slide block just in time floats on inner hole wall, play a supporting role, in the process of turning, just can not produce like this shake and cutter relieving.

Owing to having adopted technique scheme, make the utility model simple in structure, easy to process, slide block adopts sliding accessory to connect, easy installation and removal, slider support is effective, effectively prevents that knife bar from producing shake, solved and added the cutter relieving phenomenon that produce man-hour, thread surface precision and working (machining) efficiency are increased substantially.

Claims

1. a lathe tool for trapezoidal inner threads, it comprises: knife bar (1), lathe tool (2), tool bore (3), jackscrew (4), it is inner that lathe tool is contained in tool bore (3), jackscrew compresses lathe tool, it is characterized in that: the one end corresponding to tool bore on knife bar external diameter is provided with concave station (8), and the baseplane of concave station is parallel with the axis of tool bore, and concave station is provided with dovetail (7), the axis of dovetail is vertical with the Axis Cross of knife bar, is connected with slide block (5) on dovetail.

2. a kind of lathe tool for trapezoidal inner threads according to claim 1, it is characterized in that described slide block (5) outer end is arc surface, the one side corresponding with arc surface is provided with dovetail groove (6), and dovetail groove is parallel with the arc-plane of slide block both sides, and the sliding accessory of dovetail groove and dovetail (7) connects.