Friday, June 22, 2012

Characteristics of precision miniature cutting tools

tool,Characteristics of precision miniature cutting tools

Four major cutting method:

  1. Precision micro turning
  2. Precision micro milling
  3. Precision micro fly cut
  4. Precision micro drilling
There are precision micro turning tools,flat end mills, ball end mill, throwing cutter, and drills according to these applications. The working conditions, friction, impact, and cutting resistance are much worse because of the limitation of size, which is different from normal spec tools.

Basic requirements for miniature cutters:

  1. Small work piece and micro machining part In order to fit the characteristics of tiny machining, high machining accuracy and avoid interference between the work piece and the cutter, the whole work piece and the machining scale must be synchronized reduced.
  2. Sharp cutting edge Under micro cutting conditions, in order to achieve a very small amount of material removed, the depth of cut and feed rate is usually in the micron level, the cutting edge should be sharp enough.
  3. Good quality of surface Surface quality influences the performance of the micro-cutting tools a lot, poor surface quality will not only increase the frictional resistance and lead to the deterioration while fine cutting, but also weaken the toolstrength.
  4. Good quality of surface Rotary tools like the small diameter of end mills and drills, micro-cutting is carried out under high spindle speed.The cutting part of cutters should have sufficient strength and dynamic characteristics, which are able to afford the high impact load.
  5. Rigid, anti-deformation ability To ensure working accuracy, miniature cutters should have higher rigidity to reduce the deformation and rebound under cutting force.
  6. Good wear resistance, average wear process The cutting part of the micro cutting tools should have enough hardness to ensure its abrasion resistance.Blunt cutter will not only affect its machining accuracy, but also happen processing glitches which will bring difficulty of surface finishing.
  7. High accuracy of dynamic balance The run out feed rate of micro cutter is significantly greater than cutting for normal size... Under high spindle speed, the cutting edge between the cutting load is very uneven, the cutting force fluctuation is serious, the tip trajectory and accuracy of processing, the tiny end mills, drills and other rotary tool should have high accuracy of dynamic balancing.
  8. Accurate and reliable tool clamping Small rotary tool installation error is the main factor to influence the machining accuracy and reliability. The tool clamping system should have high contact rigidity, accuracy of repeating position, and good speedy locking.

Material of micro cutters

It is a very important mean to choose the advanced and applicable tool material, which may ensure the whole performance of micro tools .. The ideal materials for miniature cutters are diamond, fine grain and ultra-fine grain carbide.
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Bewise Inc., being a professional manufacturer of various cutting tools, is endeavoring to make excellent products. We are very experienced in custom-made tools, and good at solving customers’ problems when they meet difficulties and troubles. Through everlasting research and practices, we understand thoroughly about different materials of cutters and cutting tools.

BW's popular products for tool series including circular saw, carbide cutting tool, saw blade, wood saw blade, special tool,side milling cutter, …etc; For machines we have spiral tube cooler, cutter grinder, and the latest design and advanced powder forming machine / pelletizer. Bewise is a superior manufacturer and supplier of cutter production and machinery industry.

擴散粒子 - BW產品

擴散粒子 - BW產品
一般擴散粒子(Diffusion beads)包括有機材質之壓克力樹脂(PMMA)或聚苯乙烯(PS)或共聚PMMA-PS等多種高分子材質,具真圓狀的外型或多孔、絨毛、中空等行裝‧配合光學膜或其他用途,他可調控折射率、著色率、分散性、流動性、光反射性及彈性、接著性等。主要應用為LED背光模組擴散膜之光擴散劑及LED燈具擴散膜及其他光學塗層等。

Thursday, June 14, 2012

Characteristics and processing differences of cutting tools

Characteristics and processing differences of the four kinds of cutting tools : Plain Milling Cutter, End Mill, Side Milling Cutter, and Face Milling Cutter
Characteristics and processing differences of the four kinds of cutting tools?
  1. Plain Milling Cutter Plain Milling Cutter-Characteristics and processing differences of the four kinds of cutting tools : Plain Milling Cutter, End Mill, Side Milling Cutter, and Face Milling Cutter
    Plain Milling Cutter is the most commonly used tool in a horizontal milling machine. Plain Milling Cutter’s shape is like disc or cylindrical, which has blades on the outer circumference of the cutter for milling the plane which parallel to the cutter axis. The blade shapes include straight and helical blade-shaped. Generally helical blade shape is more commonly used. If the blade width is less 20mm, it is only suitable for light milling and milling hard materials because of its multi blades and small chip slots; if the width is over 20mm, it’s often designed as helical teeth in order to reduce the shear force and prevent vibration during milling, with fewer blades, so the chip slot is larger which is suitable for heavy milling and cutting soft materials.
  2. End Mill End Mill-Characteristics and processing differences of the four kinds of cutting tools : Plain Milling Cutter, End Mill, Side Milling Cutter, and Face Milling Cutter
    Such cutters have a flute in the circumferential surface and the end for milling flat, face, shoulder angle and groove .There are straight shank, taper shank, straight flute, helical flute, double flute, multi-flute, and so on.
  3. Side Milling Cutter Side Milling Cutter-Characteristics and processing differences of the four kinds of cutting tools : Plain Milling Cutter, End Mill, Side Milling Cutter, and Face Milling Cutter
    The shape of the side milling cutter is similar to the straight flute face cutter. Except the shape and function of end mills, its side also has cutting edge, which can milling the face and the side of work piece. Edge shape can be divided into straight teeth, spiral teeth and staggered teeth. Staggered teeth may be offset against each other and reduce vibration during machining, which is suitable for heavy milling.
  4. Face Milling Cutter: (Face Milling Cutter-Characteristics and processing differences of the four kinds of cutting tools : Plain Milling Cutter, End Mill, Side Milling Cutter, and Face Milling Cutter
    Face milling cutter is a disc-shaped, with cutting blades around the body and the side face. Such cutter is specialized in cutting larger plane. The blade face is wider, and the cutter body is made of general tool steel, then embedded high-speed steel or carbide blade.
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Bewise Inc., being a professional manufacturer of various cutting tools, is endeavoring to make excellent products. We are very experienced in custom-made tools, and good at solving customers’ problems when they meet difficulties and troubles. Through everlasting research and practices, we understand thoroughly about different materials of cutters and cutting tools.

BW's popular products for tool series including circular saw, carbide cutting tool, saw blade, wood saw blade, special tool,side milling cutter, …etc; For machines we have spiral tube cooler, cutter grinder, and the latest design and advanced powder forming machine / pelletizer. Bewise is a superior manufacturer and supplier of cutter production and machinery industry.

Thursday, June 07, 2012

Tungsten steel cutter,super hard alloy cutter?

Cutting Tools: What’s the difference among tungsten carbide, tungsten steel cutter, and super hard alloy cutter?
There are many kinds of different milling cutters. It may be divided into three categories as below according to its applications.
In fact, they are saying the same tool. The component is tungsten carbide (WC) and took part in the P type, M type, and K type. Micro grain carbide tool is made of tungsten carbide and adding some elements to to increase the hardness and abrasion resistance. Super hard alloy cutting tools is named by Japanese, which is also tungsten carbide cutter.
P, M, and K types are divided according to the different turning material.
  • P-type (most common) is suitable for turning mild steel, medium carbon steel, high carbon steel ....
  • K type is suitable for turning of high hardness materials such as cast iron, high-speed steel (HSS) or heat treated material....
  • M type is between the P and, K types which is suitable for difficult material or higher tensile strength material such as tin, hydraulic rod ....
Drill cutter and lathe tool depend on cutting volume.
HSSis suitable to produce drill bit cutters. Tungsten carbide is suitable for small cutting amount, good surface roughness or cutting high hardness material.
Turning tools mostly adopt tungsten carbide material, which is rarely used HSS material, unless for special purposes only!
Tungsten carbide steel is low cost, which applicable range is wider. But in some traditional industries, like automobile/motorcycle industries, pick only one type from P,K, and M type. .. but it is not suitable for optical and optoelectronic industry. Those industries mostly require a high surface roughness (mirror finishing) and the shape accuracy of the tool. Hence the basic knowledge of the diamond tool is very important. The general schools have detailed theory only for HSS high speed steel, tungsten steel tool and cutting tool. But we only know and learn the application and characteristics of diamond toolafter we enter into the community.Not only tungsten carbide or the HSS material, but also you can consider the CBN cutters or diamond tools for non-ferrous metals, the benefits are reducing tool change time and its superior performance and tool life.
Any related questions about various cutting tools and diamond cutter, please feel free to ask us, we would be glad to solve your problem. qrcode
Bewise Inc., being a professional manufacturer of various cutting tools, is endeavoring to make excellent products. We are very experienced in custom-made tools, and good at solving customers’ problems when they meet difficulties and troubles. Through everlasting research and practices, we understand thoroughly about different materials of cutters and cutting tools.

BW's popular products for tool series including circular saw, carbide cutting tool, saw blade, wood saw blade, special tool,side milling cutter, …etc; For machines we have spiral tube cooler, cutter grinder, and the latest design and advanced powder forming machine / pelletizer. Bewise is a superior manufacturer and supplier of cutter production and machinery industry.

鎢鋼圓鋸片Part2 - 鎢鋼圓鋸片偏差

鎢鋼圓鋸片Part2 - 鎢鋼圓鋸片偏差
繼上一篇【鎢鋼圓鋸片Part1 - 鎢鋼圓鋸片切割】,這一篇為各位介紹鎢鋼圓鋸片中鎢鋼圓鋸片偏差相關要注意的細節!
木材切削用圓鋸片在精準度要不會求太過嚴謹,但要注意,雖圓鋸片在公差規範內,若機台偏差或加工參數不當等因素,仍會造成加工NG,所以造成工件毀損不是單一面向,所以除了要求圓鋸片公差品質外,更要注意可能造成偏差的因素,盡量避免。

鎢鋼圓鋸片偏差小細節要注意:

  1. 內孔前磨:內孔需研磨降低表面粗糙度,這樣與機台軸心(無心研磨至鏡面)密和度高,偏差值低。
  2. 圓鋸片本身鋼板不夠平整問題:鋼板本身隨著外徑越大其平面研磨時,偏差值就越大,在要求精密切割時,精準度就會受到影響。

鎢鋼圓鋸片JIS規格公差規範:單位(mm)

外徑D 內孔d 刃厚度T1 鋼板厚度T2 參考齒數
規格 容許值 規格 容許值 規格 容許值 規格 容許值
205
255
305
355
±2 25.4
30
60
85
H8 1.8
2.0
2.4
2.8
3.0
3.2
3.5
±0.1 1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.5
±0.08 24,32,40,48,
60,72,80,96,
100,120
405
455
560
610
3.0
3.2
3.5
4.0
4.5
5.0
2.0
2.2
2.5
3.0
3.2
3.5
4.0
32,40,48,
60,72,80
96,100,
120,140

鎢鋼圓鋸片JIS偏擺公差規範:單位(mm)

外徑 外周刃的擺動動容許值(最大) 側邊刀刃的擺動動容許值(最小)
205 0.08 0.15
255
305 0.10 0.2
355
405 0.15 0.25
455 0.30
510 0.20 0.35
560
610
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