CN203316834U

CN203316834U - Circular disk saw for cutting low-lead brass

Info

Publication number: CN203316834U
Application number: CN2013203897575U
Authority: CN
Inventors: 黄园园; 付亚波; 陈聪
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2013-07-02
Filing date: 2013-07-02
Publication date: 2013-12-04
Anticipated expiration: 2023-07-02

Abstract

The utility model discloses a circular disk saw for cutting low-lead brass, belonging to the technical field of material processing. When a traditional cutter is used for cutting a low-lead brass long blank, the problems of short service life of the cutter and sticking of the cutter exist, and the cutting efficiency is reduced. The circular disk saw comprises a saw body of the circular disk saw, which is made of traditional high-speed steel, and is characterized in that the saw body is formed by distributing a cutting edge, a film-plated layer and a non-film-plated layer from outside to inside; the film-plated layer is plated with a layer of diamond-like carbon by an ion film-plating machine, the thickness is 1.95-2.0 mu m, the width is from the cutting edge to 50-70mm of the middle part, and the HLD hardness of the film-plated layer is 1.4-1.5 times of that before treatment. The circular disk saw after film plating has the advantages of high hardness, low coefficient of friction and the like, and when the blank is cut, the sticking of the cutter can be avoided, and the service life and the cutting efficiency are improved. When the circular disk saw disclosed by the patent is used for cutting a low-lead brass bar, the circular disk saw has the characteristics of high processing efficiency, low cost and easiness in implementation of industrial production.

Description

The circular saw of cutting low-lead brass

Technical field

The utility model belongs to cutting tool and the cutting process technical field of material, relates to the circular saw of low-lead brass cutting.

Background technology

Cutter be in the brass material process for cutting off and the instrument of machining screw, claim again cutting element.Different materials needs different cutting elements, could realize efficient, stable and cutting cheaply.Brass is widely used in water pipe, tap, valve, pipe joint of Meter Parts, the water heating bathroom industry of electronic apparatus connector, the instrument industry of electron and electrician industry etc.Ledrite commonly used is the alpha+beta alpha-beta brass, and tiny plumbous particle is disperse and distributes, and discarded rear lead very easily advances people's soil, can be entered atmosphere as also burned, particularly when ledrite during as drinking water pipeline accessories such as taps, pipe joint, plumbously can leach and enter in water the serious harm health.Low-lead brass refers to that lead tolerance is lower than 0.25 wt %, and the leaching amount in water is 0.01 mg/L, can not be detrimental to health.Yet, during low-lead brass processing environmental protection copper valve, due to the reduction of lead content, the sticky cutter of process generation and screw tap, the easily broken problem of drill bit, reduced relative stock removal rate, needs research suitable cutting tool and cutting process.

Chinese patent " brass drilling tool " in 2009, publication number: 201353659, a kind of cutting element of brass is disclosed, the space of the hole inwall of its rake face and cutting hole increases, convenient cutting fluid flows into the cutting tip lubrication and cooling, has reduced extruding and the friction of copper scale and cutter rake face, makes chip removal more smooth and easy, the stepped hole one-shot forming, thus the service life of cutter, the brass drilling tool that shortens process time improved.This patent content can not solve the problems such as low-lead brass sticky cutter of when cutting, stock removal rate are low.

Chinese patent " casting brass Special ceramic blade " in 2011, publication number: 202062092U, a kind of casting brass Special ceramic blade is disclosed, comprise base, the base below is provided with handle of a knife, the base top is provided with cutter, and cutter comprises the first blade, the second blade and the 3rd blade, and the first blade, the second blade and the 3rd blade all are connected on base.The existence of three blades, the blade that people can be different according to different process choice, and do not need to change cutter, only need the operating parameter of change equipment to get final product.According to the technical solution of the utility model, processing does not need repeatedly tool changing with the part of a plurality of techniques, simple to operate, has improved production efficiency.But this patent content can not solve the problems such as low-lead brass sticky cutter of when cutting, stock removal rate are low.

At present in disclosed information, relative main body commonly used is that 65Mn alloy and cutter head adopt carbide alloy to be cut low-lead brass, the subject matter existed is: while for low-lead brass, cutting off long blank, have short, the sticky cutter problem of cutter life, reduced stock-removing efficiency.Therefore, need research to be applicable to cutting tool and the cutting process of this kind of material.

Summary of the invention

The utility model, for low-lead brass easily sticky cutter of when cutting rod, the cutter life deficiency existed such as shorter, has been studied a kind of cutting tool of the disk for low-lead brass, to solve sticky cutter and to improve the problem of cutter life.

The technical scheme that the utility model adopts is:

The circular saw of low-lead brass cutting, comprise the circular saw saw body of being made by traditional high-speed steel, it is characterized in that: described saw body is not by the edge of a knife, film plating layer, distribute in the film plating layer introversion and extroversion and form, described film plating layer is coated with one deck DLC by ion plating equipment, thickness is 1.95-2.0 μ m, width is for to start the 50-70mm to middle part from the edge of a knife, and the HLD hardness of film plating layer is 1.4-1.5 times before processing.

The low-lead brass cutting process that this patent relates to comprises the following steps:

Step 1: the above brass cutting disc of leaded 0.25 wt % that can effectively cut of buying high-speed steel manufacture is sawed (traditional circular saw), plate one deck DLC on its surface with ion plating equipment, thickness is 1.95-2.0 μ m, width is for to start the 50-70 mm to middle part from sawtooth, and the HLD hardness after processing is 1.4-1.5 times before processing.

Step 2: the circular saw after plated film replaces traditional circular saw, is arranged on the lathe of the long blank of cutting.The scope that circular saw is installed is φ 125 ~ 200 mm; Driving belt is 3, V belt; The speed of mainshaft 3300 rpm, main shaft bearing should be able to carry at a high speed, heavily loaded, 24 continuous throughout the twenty-four hour24s; Main motor 5.5 kW-2P.Circular saw is the Fencing protection mode.

Step 3: adjust Cutting parameters, making the depth of cut is 1.0-1.5 mm, and turning speed is 500-600r/min.When the depth of cut is 1.0 mm, turning speed removes the limit 500 r/min, when the depth of cut is 1.5 mm, and turning speed capping 600 r/min, all the other parameters are pressed the corresponding proportion value.

Step 4: the radical of selecting the turning copper rod.When copper rod is below diameter 20 mm, once cut 4; More than diameter 45 mm, once cut 2; The 20-45 copper rod, once cut 3.

Short copper rod after turning falls into hopper automatically, and long copper rod automatic feed, restart sawing.

The advantage of this patent is plating one deck DLC film on traditional circular saw, the characteristics that while having the cutting low-lead brass, working (machining) efficiency is high, cost is low.

The accompanying drawing explanation

Fig. 1 is the schematic diagram after tool surface is processed.

In Fig. 1: 1 edge of a knife; 2 film plating layers; 3 film plating layers not;

The specific embodiment:

Describe specific embodiment of the utility model in detail below in conjunction with technical scheme and accompanying drawing.

Circular saw for the low-lead brass cutting of cutting strand, comprise the circular saw saw body of being made by traditional high-speed steel, the common high-speed steel (M2) of take is material, be processed into the disc-shaped cutting tool that is applicable to cutting, described saw body is by the edge of a knife, film plating layer, in the film plating layer introversion and extroversion, do not distribute and form, described film plating layer is coated with one deck DLC (DLC) by ion plating equipment, deposition vacuum is 0.3-0.4Pa, depositing temperature is 150-250 ℃, thickness is 1.95-2.0 μ m, width is for to start the 50-70mm to middle part from the edge of a knife, be that the width that starts to deposit DLC from sawtooth on circular saw is 50-70mm, the HLD hardness of film plating layer is 1.4-1.5 times before processing.Plate the circular saw of DLC, be arranged on topping machanism, according to certain technique, long excellent base is cut off.

Above-mentioned institute coating diamond-like, thickness is 1.95-2.0 μ m, and thickness surpasses this numerical value, and coating easily comes off, cost is high, thermal conductivity factor is low.Thickness is lower than this numerical value, and performance is not good.

And width is to start to middle part 50-70mm from the edge of a knife (1), do not need whole plated film to reduce costs, do not affect again the quantity of simultaneously cutting bar.

Circular saw after plated film is applicable to the cutting lead tolerance lower than the low-lead brass rod below 0.25%.

The equipment of this patent is on the circular saw of traditional high-speed steel, plates one deck DLC film, has the advantages such as high rigidity, low-friction coefficient, and during processing valve blank, sticky cutter, service life improve more than 30%, stock-removing efficiency raising 20%.This patent has the advantages that working (machining) efficiency is high, cost is low, be easy to suitability for industrialized production.

Claims

1. cut the circular saw of low-lead brass, the plated film circular saw of making on traditional high speed steel substrate, by the edge of a knife, film plating layer, the film plating layer ecto-entad distributes and forms, described film plating layer is coated with one deck DLC material by ion plating equipment, thickness is 1.95-2.0 μ m, width is for to start the 50-70 mm to middle part from the edge of a knife, and the HLD hardness of film plating layer is uncoated 1.4-1.5 times.