How to use grinding wheel machine

Grinding wheel machine is used to grind all kinds of tools, tools, commonly used equipment. The device is mainly composed of a base, a grinding wheel, an electric motor or other power sources, a bracket, a protective cover and a water supply device. It is mainly composed of a base, wheel, motor or other power source, bracket, protective cover and a water supply device, the grinding wheel is arranged on the top surface to the base, the base is used for accommodating the power source of the internal space, power transmission reducer, gear reducer has a top surface of the base through the drive shaft for fixing the grinding wheel.

The bottom position of the base of the grinding wheel has a corresponding depression catchment, catchment area extends outwards to a water supply device is arranged on the wheel flow above one side water supply device is provided with a water solution containing space, and one side corresponding feed wheel with a water outlet. The whole transmission mechanism is very simple and perfect, so that the grinding process is more convenient and smooth and improve the grinding efficiency of the whole grinder.

Grinding wheel using in Abrasive

Grinding wheel, also known as fixed abrasive, is the bond will be ordinary abrasive consolidation into a certain shape (most of the circular, the central through hole), and has a certain strength of the bonded abrasive. It is generally composed of abrasive, bonding agent and porosity, these three parts are often referred to as the three elements of the bonded abrasive tools. According to the different classification of the bond, the common ceramic (bond) grinding wheel, resin (bond) grinding wheel, rubber (bond) grinding wheel.

The Grinding Wheel is one of the largest amount of abrasives, widely used, when using high-speed rotation can be cylindrical, metal or nonmetal workpiece inner circle, plane and various surface of rough grinding, semi fine grinding and fine grinding and notching and cutting etc.. The characteristics of the grinding wheel are mainly determined by the factors such as abrasive, grain size, bond, hardness, structure, shape, size and so on.

Grinding wheel production line

Juchuang Abrasive is a high-tech enterprise specialized in research, development and production of abrasive and abrasive tools. It is a professional manufacturer of abrasive tools and diamond / CBN products in China. It is a high-tech enterprise which integrates research, production and service. 

 Of the large enterprises, one of the top three domestic counterparts. The company has a number of independent intellectual property rights of the abrasive products, with high-precision resin abrasive and ceramic, resin CBN series of diamond abrasive, and other production lines.

Grinding wheel axis and workpiece axis should be so high to ensure that the spherical roundness. Grinding patterns are usually used to determine the contour of the error. If the grinding sphere surface was convex pattern, indicating that the grinding wheel to participate in the lower half of the grinding, the center of the wheel below the center of the workpiece, this time, the center wheel should be adjusted to make the center of the workpiece height, until the mill The surface of the sphere is cross-shaped. The error requirements in 0.003-0.004mm within.

Grinding outside the sphere, the wheel frame to turn a certain angle, so the wheel bore size of the dressing should be completed before the adjustment of the machine. Grinding wheel in the grinding process, do not need to dress the hole, as long as the end of the grinding wheel with sand dressing can be, so that both the grinding wheel to restore sharp, but also to ensure that the wheel bore size unchanged. Grinding wheel after grinding in a timely manner in order to facilitate the processing to ensure quality. As the spherical grinding wheel axis and workpiece axis can not be absolutely equal, so the workpiece will have a small step, affecting the accuracy of the workpiece, this time, the top of the spherical drill a hole less than 1mm to avoid.

Cut off wheels and grinding disc

Juchuang develops, manufactures and markets a full line of  Resin-Bonded abrasive 

cut-off wheels and grinding discs for use on wide range of materials: metal, stone, 

concrete and more.

Juchuang offers these advantages:

A full line of high quality resin-bonded products

Application support

Reliable, helpful and Efficient customer service.

Know-how and a reputation based on 50 years of experience.

Tool materials commonly used in tool grinding include high speed steel (HSS), powder metallurgy high speed steel (PM-HSS), cemented carbide (HM) and PCD, CBN, cermets and other superhard materials. High-speed steel cutting tools sharp, good toughness, carbide hardness but toughness is poor. Carbide tool density significantly higher than high-speed steel cutting tools. The two materials are the main material for bits, reamers, milling cutters and taps. Powder metallurgy high-speed steel properties between the above-mentioned between the two materials, mainly used in the manufacture of rough milling cutter and tap.
High-speed steel tool material due to good toughness, so the collision is not sensitive. However, carbide cutting tools, high hardness and brittle, very sensitive to the collision, the edge easy to jump. Therefore, in the grinding process, must be on the operation of carbide cutting tools and placed very carefully to prevent the collision between the tool or tool drop.
As the high-speed steel cutting tools are mostly relatively low precision, the grinding requirements are not high, coupled with its price is not high, so many manufacturers set their own tool shop grinding. Carbide tools, however, often need to be sent to a professional grinding center for grinding. According to Arnold tool grinding center statistics, more than 80% of the tool repair tool is carbide.
Second, the tool grinder
As the tool material is very hard, so the general can only use grinding to change its shape. In the tool manufacturing, grinding in the common tool grinding machine has the following:
Grinding machine: Grinding drill, milling cutter and other tools of the groove or back.
2. Grinding angle machine: grinding cone cone angle (or eccentric rear angle).
3. Repair the edge of the machine: the amendment of the cutting edge of the drill.
4. Universal universal tool grinding machine: grinding cylindrical, groove, back, vertex, horizontal blade, plane, rake face and so on. Commonly used in a small number of complex shape of the tool.
5.CNC grinder: generally five-axis linkage, function determined by the software. Generally used for grinding a large number of high precision, but not complicated tools, such as drill, end mills, reamers and so on. The main suppliers of such grinders come from Germany, Switzerland, the United States, Australia and Japan.
Third, grinding wheel
Abrasive grain
Different grinding wheel material is suitable for grinding different materials of the tool. Different parts of the tool need to use the size of the abrasive particles are different to ensure that the edge protection and the best combination of processing efficiency.
Alumina: Used for grinding HSS tools. The grinding wheel is inexpensive and easily modified into a variety of shapes for grinding complex cutting tools (corundum).
Silicon carbide: used to correct CBN grinding wheel and diamond grinding wheel.
CBN (cubic boron carbide): used for grinding HSS tool. The price is high, but durable.
Internationally, the grinding wheel with B to represent, such as B107, where 107 represents the size of the abrasive grain diameter.
Diamond: used to grind HM tool, the price is high, but durable. D on the wheel to that, such as D64, where 64 represents the size of the abrasive grain diameter.
2. Shape
To facilitate the grinding of different parts of the tool, grinding wheels should have different shapes. The most commonly used are:
Parallel grinding wheel (1A1): grinding angle, diameter, back and so on.

Characteristics of Centerless cylindrical grinding

    1. Two-wire External Grinding center hole does not play, do not support the workpiece thimble. Since the center of the workpiece uncertain, the grinding allowance is relatively reduced.
      2. External grinding mill can not axially grooved workpiece, grinding perforated workpiece, does not correct the position of the hole axis, low concentricity of the workpiece.
      3. Cut inside his cell under normal circumstances can only be processed on a roller rolling on the workpiece can therefore, particularly suitable for grinding sets of groups, and other thin-walled parts. Grinding sets of parts because the parts are positioning themselves cylindrical reference. Therefore it can not be corrected within the original uranium with external error between.

      4. Centerless grinding time maneuvering and loading and unloading time coincidence, easy to implement grinding process automation, high production efficiency.
      5. In the centerless grinding process, the change in position of the workpiece center depends on the size of the original error of the workpiece before grinding, process system rigidity, grinding, dosage and other process parameters (high workpiece center, pallets angle, etc.);
      Stability 6 centerless grinding movement of the workpiece, the machine depends on the uniformity of the transmission chain, the workpiece shape, weight, guide wheels and supporting materials, surface morphology, grinding with a star and other process parameters.
      7. Centerless grinding machine for a long time to adjust, to adjust the machine's technical requirements are also higher, does not apply to single and small batch production.

Resin grinding wheel cleaning method
    In the production process to use diamond grinding wheel grinding in the belt. General grinding wheel running 5-7 days to remove the cleaning. (Rubbed down above the rubber debris, after high temperature friction attached to the surface of the diamond, it is difficult to clean)
    Now we use acetone soak 2 hours, and then use imported cleaning agent cleaning, the effect is very good, but not environmental protection, energy saving.
    Cleaning requirements:
    1, to be environmentally friendly, non-ketone, can not be halogenated hydrocarbons.
    2, can not damage the diamond wheel tablets
    Installation Notes
    Grinding wheel in the installation must be carefully examined and identified before. Check the identification of the steps are:
    1, check whether the brand wheel is correct, in line with the performance of all selected grinding wheel, shape and size.
    2, check and identify the appearance of the wheel structure. Look at the wheel to see if it is damaged (or cracked). The appearance of damage (or cracks) of the wheel can not be used. There are also requirements both sides of grinding wheel flat, no obvious skew.
    3, check and identify the internal cracks in the grinding wheel. With a hand wheel, with a wooden hammer tapping wheel tablets listen to the sound, no crack of the grinding wheel issued a crisp sound, cracked wheels are hoarse voice, which can not be used.

The grinding wheel is used to increase the production efficiency

 Wide wheel grinding is also a kind of efficient grinding, is to increase the grinding width to improve the grinding efficiency: - 'external grinding width is only 50mm, and wide grinding wheel external grinding wheel width up to 300mm. Surface grinding wheel width up to 40mm, centerless grinding wide wheel width up to 800-1000mm; in the cylindrical and cylindrical grinding generally used in the cutting force cutting method, they are used in addition to the heartless grinding method, but also through Grinding wide grinding wheel grinding workpiece size accuracy up to 6, the surface roughness up to 6 Ra0.06um.