This document discusses the application of CBN grinding wheels in various industrial grinding processes. It describes how CBN wheels can be used to grind camshafts and crankshafts with tighter tolerances compared to conventional wheels. The document also discusses how CBN wheels improve efficiency when grinding internal holes and gears. CBN abrasive tools are also said to be better for machining hardened materials due to their high hardness and strength. While CBN tools provide benefits, the document notes there are still problems to address with their widespread adoption.
How to dress vitrified CBN wheels?The dressing of CBN grinding wheel can be divided into two steps: Truing and Dressing. Truing is to make the grinding wheel reach the required geometric shape and dimensional accuracy by changing its macroscopic shape of the grinding wheel, and make the grinding wheel tip finely broken to form a sharp grinding edge; Dressing is to remove the binder between the grinding grains of the grinding wheel, so that the grinding grains protrude from the surface of the binder, forming the necessary chip space so that the grinding wheel has the best grinding capacity. According to the specific situation, shaping and sharpening can be unified or completed at the same time, also can be done step by step.
How to dress vitrified CBN wheels?The dressing of CBN grinding wheel can be divided into two steps: Truing and Dressing. Truing is to make the grinding wheel reach the required geometric shape and dimensional accuracy by changing its macroscopic shape of the grinding wheel, and make the grinding wheel tip finely broken to form a sharp grinding edge; Dressing is to remove the binder between the grinding grains of the grinding wheel, so that the grinding grains protrude from the surface of the binder, forming the necessary chip space so that the grinding wheel has the best grinding capacity. According to the specific situation, shaping and sharpening can be unified or completed at the same time, also can be done step by step.
The rods are manufactured using advanced machinery and tools and methods under expertise of our trained professionals. These molybdenum rods are of ASTM B387 standard and 6mm to 25 mm in size.
Visit Us :-http://shimsfoils.com/subcategory-molybdenum-rods-37.html
The presentation provides an insight to the topic of grinding machines and abrasives. It introduces the topic in an easy and lucid way so that the viewers can easily grasp the concepts.
Dressing method of superhard grinding wheelAnna Wong
Diamond dressing rollers are widely used in grinding processes and workpieces. Such as profile forming grinding (with core and without core), internal profile, thread profile, flat profile, guide plate, multi-key shaft and gear. method of using a rotary tool in which the work surface is inlaid or covered with many small particles of diamond to cut-in the dressing wheel.
The rods are manufactured using advanced machinery and tools and methods under expertise of our trained professionals. These molybdenum rods are of ASTM B387 standard and 6mm to 25 mm in size.
Visit Us :-http://shimsfoils.com/subcategory-molybdenum-rods-37.html
The presentation provides an insight to the topic of grinding machines and abrasives. It introduces the topic in an easy and lucid way so that the viewers can easily grasp the concepts.
Dressing method of superhard grinding wheelAnna Wong
Diamond dressing rollers are widely used in grinding processes and workpieces. Such as profile forming grinding (with core and without core), internal profile, thread profile, flat profile, guide plate, multi-key shaft and gear. method of using a rotary tool in which the work surface is inlaid or covered with many small particles of diamond to cut-in the dressing wheel.
Due to the long work time of the rolls, the surface of the rolls have cracks, peeling defects, etc., or the rolls body diameter does not meet the size requirements. At this time, the repair (such as surfacing) technology is selected to restore the original size of the rolls. This is called roll repair.
How to choose the right diamond grinding wheelAnna Wong
Vitrified Diamond Grinding Wheels For PCD & PCBN Tools
Vitrified Diamond Grinding Wheels Have High Speed, High Efficiency, High Precision, Low Grinding Cost Performance.It Is Used For Grinding PCD And PCBN Tools.
GST Grinding is an international machine and plant manufacturing company for circular grinding machines; processing crankshafts, gear shafts, cam shafts, balance shaft, rotary shafts and gears.
As the saying goes, if a worker wants to do something good, he must first sharpen his tools. The cutting tool is the beginning and end of the work of machining the bearing. Choosing the right high-quality cutting tool will bring you not only the smooth completion of the workpiece, but also greatly improve for you. Processing efficiency and saving processing costs.
Honing is a low- speed, high- pressure surface finishing operation in which stock is removed by the cutting action of abrasive or Super Abrasive grit embedded in one or more honing stones.
Halnn superhard will share you the sulotions of cbn insert machining auto cast iron parts.Halnn superhard is a professional manufacturer of cbn insert which specific to machining high hardness materials and high speed steel ect. Bn-S30 solid cbn insert used for rough machining auto parts disk brakes,BN-S300 solid cbn insert used for machining enginee block,BN-H20 soldering cbn insert used for machining belt pelley.Bn-H20 and BN-S30 and BN-S300 can be used for machining cast iron parts.
The advantages of Halnn BN-S30 solid CBN inserts,
(1) High hardness
(2) Good wear resistance and impact toughness
(3) Long inserts lifetime
(4) Can achieve high speed cutting
PCD inserts (longevity, high precision and high efficiency). Applications: metals such as aluminum, copper, tungsten carbide, etc and nonmetal. 2. PCBN inserts (longevity, high precision and high efficiency). Applications: steel pieces with HRC=48°~65°, and working pieces made of heat-resistant steel, heat-resistant alloy, gray cast iron and ductile iron.
What process should do for pcd edge grinding?Julia Zhang
What Process Should Do for PCD Edge Grinding?
1.Selection of PCD Tool Grinding Machine
2.Selection of Diamond Grinding Wheel
3.Balance of Diamond Grinding Wheel
4. Clamping and adjust the PCD tool between the rotary center and the optical center
5.Selection of Wheel Swing
6.Determine Grinding Speed, Frequency and other parameters
7.Cleaning of Diamond Grinding Wheel
8.Treatment of PCD tools before and after edge grinding
9.Detection of PCD Tool
Moresuperhard Products Co., Ltd has one series of solution on PCD&CBN tools
(such as tool blanks, inserts, milling tools, reamers,and honing tools), from raw PCD/PCBN blanks, PCD/CBN grinding wheel, PCD/CBN tools grinding machine, laser cutting machine, polishing and lapping machine & wheels, chamfer machine &wheels, and brazing machine include high frequency & the vacuum brazing machine for PCD/PCBN tools. More details you can visit our website www.pcdgrinding.cn.
Description of diamond grinding wheels for circular saw blades:
We supply Diamond and CBN grinding wheels to the saw blade industry. Widely used for face grinding,top grinding, flank grinding ,hollow tooth grinding and re-sharpening for tungsten carbide tipped saw blades and one-piece HSS saws.
Soldering pcbn inserts,brazed pcbn inserts-Skype:julia1989869
Description of soldering brazed PCBN inserts:
PCBN cutting inserts are welded directly onto the blade base to form a growing, super strong structure, without the risk of layering or cracking.
Features of soldering brazed PCBN inserts:
1.High chemical resistance stability
2.High hardness and abrasive resistance
3.Strong impact resistance
4.Good fracture resistance
5.High working efficiency
6.Dry cutting
Applications of soldering brazed PCBN inserts:
Idea for machining hard ferrous metals, such as hardened steels, gray cast iron. PCBN inserts are widely used to machine brake discs, engine cylinder liners, engine blocks, break drumsticks, valve seats & guides, gears and mould,etc.
Any need contact julia@moresuperhard.com or julia1989869@gmail.com~
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The Application of CBN wheels In Grinding
1. 河 南 磨 澳 超 硬 材 料 有 限 公 司
H e n a n M o r e S u p e r H a r d P r o d u c t s C o . , L t d .
Office: B-906,Wanda Plaza Office Building,NO. 171 Zhongyuan Rd, Zhongyuan
District,450000,Zhengzhou City, Henan Province 450001,China
Tel/Fax: +86(371)86545906 Mob: +8615093391569 Email:Julia@moresuperhard.com
The Application Of CBN Wheel In Grinding
1. Grinding Automotive Parts-Camshaft and Crankshaft
There are many cams on the camshaft of an auto engine, the rough and fine grinding of quenched cams are the
key processes of the cam quality. Usually, we adapt imitating shape grinding, the increasing of the workpiece
speed is limited and easy to burn out. And the camber curve of cam surface is strongly affected by the diameter of
grinding wheel. So it is hard to promise the accuracy of cam profile. The production practice proves that when the
wheel diameter is large, the cam that ground is thin; and when the wheel diameter is small, the cam that ground is
fat. Only when the wheel diameter is similar or equal to the roller diameter (usually φ570mm)of grinding cam, its
profile tolerance is almost zero, which means the camber curve of cam surface is near imitated cam. In real
production, the wheel diameter is generally from D600 to D500, while is far from the ideal grinding wheel
diameter(φ570mm), so in production there always have most camshafts are out of standard line. In order to solve
this problem, we use CBN wheel grinding on the imitated shaping cam grinding machine, we can make the
diameter of CBN wheel D575mm, the thickness of CBN layer 4-5mm, while the smallest diameter of grinding
wheel is D565 and the diameter range of grinding is only 10mm, meanwhile the numbers of grinding parts is
equivalent to dozens of ordinary wheels. Through CBN wheel grinding , can not only promise the curve of
camshaft but also won’t cause burns.
For example, Liton company uses CBN grinding wheel to grind camshaft, its cost decreased 50%, while the
fatigue strength of the camshaft surface increased 30%; Dongfeng Motor Corporation Xiangfan Diesel Engine
Works uses vitrified CBN grinding wheels to rough grind of Cold-shock cast iron camshaft, its grinding tolerance is
t=4~5mm, v=60m/s(grinding wheel), the rotating speed of workpiece n=100r/min, vf=0.1mm/s. By using high
speed grinding fluid, the life span of CBN wheel equals 20pcs Corundum abrasive wheels.
2. 河 南 磨 澳 超 硬 材 料 有 限 公 司
H e n a n M o r e S u p e r H a r d P r o d u c t s C o . , L t d .
Office: B-906,Wanda Plaza Office Building,NO. 171 Zhongyuan Rd, Zhongyuan
District,450000,Zhengzhou City, Henan Province 450001,China
Tel/Fax: +86(371)86545906 Mob: +8615093391569 Email:Julia@moresuperhard.com
2. Application of CBN Grinding Wheel in Internal Hole Grinding
The efficiency of internal grinding is always low, its mail reason is the grinding speed, the rigidity of grinding
wheel material and grinding rod. The time spent in dressing and changing grinding wheels during the production
process accounted for almost 1/3~ 1/5 of the production time per piece. If grind inside circle or groove with
electroplated CBN wheel,by increasing the wheel speed and grinding rod diameter, the rotate speed and feed speed
can be appropriately increased. In this way not only can guaranteed hole(arc) diameter, groove width
size ,geometric tolerance, surface roughness and not easy to burn, but also can greatly increased the working
efficiency and decrease production cost.
For example: One factory processes an annual output of 600,000 spinning machine rolling bearing sleeve, they
used to use GC grinding wheel to grind φ15.5+0.04 hole and adjacent arc slots, need to machining in two steps in
two different M224 internal grinding machine. The groove (arc) diameter difference and size and hole coaxiality is
difficult to ensure, and the efficiency is very low. After using CBN wheel, the grinding rod is thickened, the feed
amount is improved and the time of dressing and changing grinding wheel is shortened, which completely solved
the original issues. Afterwords,the machining way changed to grind hole and groove in the same time, which means
install two grinding wheels on the grinding rod, increased one time grinding efficiency and saved one grinding
machine. The processed surface roughness of workpiece is RA0.63um. The adopted grinding parameters are as
follows: V=36m/s(grinding wheel), V2=19m/min, f=1um/r(rough machining),f=0.5um/r(fine machining).
3. Using CBN Wheel for Grinding Gear
Gear grinding usually adapt single tooth face grinding and multi-tooth surface grinding. Single tooth face
grinding can achieve higher machining accuracy,but its efficiency is lower and cost is higher; While multi-tooth
surface grinding can get higher production efficiency but its machining quality is worse than single tooth face
grinding. If using CBN wheel grinding, no matter use single tooth face grinding or multi-tooth surface grinding,
when using electroplated CBN wheel or vitrified CBN wheel , its performances are very amazing:
(1) CBN grinding wheel can be made into high precision tooth profile, without frequent dressing and adjusting
machine,and because of high durablity, it can achieve steady tooth profile, lead and pitch accuracy.
3. 河 南 磨 澳 超 硬 材 料 有 限 公 司
H e n a n M o r e S u p e r H a r d P r o d u c t s C o . , L t d .
Office: B-906,Wanda Plaza Office Building,NO. 171 Zhongyuan Rd, Zhongyuan
District,450000,Zhengzhou City, Henan Province 450001,China
Tel/Fax: +86(371)86545906 Mob: +8615093391569 Email:Julia@moresuperhard.com
(2) Can realize high speed grinding and high feed amount when grind gear face. It is not easy to burn and
roughness is low, under the condition of improving grinding efficiency can achieve higher gear accurancy(level
6~7).
(3) Longer lifespan and better grinding efficiency, it saves the time of dressing and changing of grinding wheel,
also shorten the time of adjusting machine and measurement of workpiece.
4. Application of CBN abrasive tools to process hard materials and hard surface
For honing holes of hardened steel or chilled cast iron, we can use CBN honing stones. For machining alloy steel,
stainless steel, heat-resistant steel and alloy with high strength, high hardness and high heat sensitivity, it is better to
choose high hardness and high strength CBN grinding wheel, meanwhile use extreme pressure emulsion or high
speed grinding fluid for cooling. It is advisable to use CBN grinding wheel for long guide or complex surface and
cam-grinding machine
CBN material, whether it is used to make tools or abrasives, can be used in high speed cutting or grinding to
improve product quality, improve processing efficiency, shorten the processing cycle and reduce the processing cost.
Therefore, in the processing, vigorously promote CBN cutting (grinding) tools is a powerful measure to improve
the manufacturing technology. However, if it is widely used, there are still exist .many problems.