CN202278262U

CN202278262U - Combined pulling and reaming cutter

Info

Publication number: CN202278262U
Application number: CN2011203739233U
Authority: CN
Inventors: 刘登发
Original assignee: Hengyang Fengshun Automobile Axle Co Ltd
Current assignee: Hengyang Fengshun Automobile Axle Co Ltd
Priority date: 2011-09-29
Filing date: 2011-09-29
Publication date: 2012-06-20
Anticipated expiration: 2021-09-29

Abstract

The utility model discloses a mechanical processing combined pulling and reaming cutter, which comprises a tool bit, a tool handle, a connecting rod and a blade, wherein the tool bit and the tool handle are connected integrally; and the blade is arranged on the axial periphery of the tool bit. The combined pulling and reaming cutter is characterized in that: the connecting rod is movably connected with the back end of the tool handle; axial cooling liquid through holes are formed in the connecting rod and the tool handle from the back end of the connecting rod to a transition region between the tool handle and the tool bit; the front ports of the cooling liquid through holes are exposed out of the outer surface of the transition region; the front inclined angle of the front end part of the hard alloy blade is 1-2 degrees; the axial length of an inclined surface is 2-3 millimeters; the back inclined angle of the back end part of the blade is 6-8 degrees; and the axial length of the inclined surface is two thirds of the length of the blade. Due to the adoption of the combined pulling and reaming cutter, the processing precision is high, the processing requirements of workpieces of different sizes can be met, and a liquid can be filled automatically for lubricating; and the combined pulling and reaming cutter is convenient to use, and has high production efficiency.

Description

Combined type draws reamer

Technical field

The utility model relates to a kind of machining tool, and particularly a kind of combined type draws reamer.

Background technology

In the prior art, when processing some accurate minor diameter hardened steel workpiece endoporus, often adopt common high-speed steel to draw reamer to carry out cut; Be difficult to guarantee machining accuracy; And its handle of a knife and connecting rod be connected as a single entity, and can not satisfy the processing request of different size workpiece, is by hand oiling to the lubricated of cutter head; Inconvenient operation, efficient is low.

Summary of the invention

The purpose of the utility model is in order to overcome above-mentioned weak point, and provides a kind of machining accuracy high, and combined type easy to use draws reamer.

The purpose of the utility model is achieved in that combined type draws reamer to comprise cutter head, handle of a knife, connecting rod, blade; Cutter head, handle of a knife are connected as a single entity; Blade is installed on the axial periphery of cutter head; It is characterized in that connecting rod and handle of a knife rear end flexibly connect, in the connecting rod of handle of a knife and cutter head transition region, handle of a knife, axial cooling fluid through hole is arranged from the connecting rod rear end, cooling fluid through hole front port exposes the transition region outer surface; The top rake of carbide chip fore-end is 1 °～2 °, inclined-plane axial length 2-3 ㎜, and the back rake angle of blade rear end part is that 6 °～8 °, inclined-plane axial length are 2/3rds of blade lengths.

The utility model is owing to adopt above architecture advances, and machining accuracy is high, can satisfy the processing request of different size workpiece, and liquid feeding is lubricated voluntarily, and is easy to use, and production efficiency is high.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the left view of Fig. 1.

The specific embodiment

Combine the accompanying drawing illustrated embodiment that the utility model is made detailed description at present.

As shown in the figure, combined type draws reamer to comprise cutter head 1, handle of a knife 2, connecting rod 3, blade 4.Cutter head 1, handle of a knife 2 are connected as a single entity; Three blades 4 are installed on the axial periphery of cutter head 1 equably; Connecting rod 3 is flexibly connected by screw thread with handle of a knife 2 rear ends; In the connecting rod 3 of handle of a knife 2 and cutter head 1 transition region, handle of a knife 2, axial cooling fluid through hole 5 is arranged from connecting rod 3 rear ends, cooling fluid through hole 5 front ends expose the transition region outer surface by equally distributed three fluid holes.The top rake α of carbide chip 4 fore-ends is 1 °～2 °, inclined-plane axial length L 1 2-3 ㎜, and the back rake angle β of blade 4 rear end parts is that 6 °～8 °, inclined-plane axial length L 2 are 2/3rds of blade 4 length.

Claims

1. a combined type draws reamer; Comprise cutter head (1), handle of a knife (2), connecting rod (3), blade (4); Cutter head (1), handle of a knife (2) are connected as a single entity; Blade (4) is installed on the axial periphery of cutter head (1); It is characterized in that connecting rod (3) and handle of a knife (2) rear end flexibly connect, in the connecting rod (3) of handle of a knife (2) and cutter head (1) transition region, handle of a knife (2), axial cooling fluid through hole (5) is arranged from connecting rod (3) rear end, cooling fluid through hole (5) front port exposes the transition region outer surface; The top rake α of carbide chip (4) fore-end is 1 °～2 °, inclined-plane axial length L 1 2-3 ㎜, and the back rake angle β of blade (4) rear end part is that 6 °～8 °, inclined-plane axial length L 2 are 2/3rds of blade (4) length.