What is a grinder?

Question 1: What is the difference between a grinder and a machine tool? Machine tool is a very extensive name, and a large number of mechanical equipment can be called machine tools. Grinder is only one of the branches of machine tool equipment, and it is also divided into surface grinder, internal and external grinder, universal tool grinder, thread grinder, machine tool track grinder and so on.

Question 2: What does a grinder do? A grinder is a machine tool that grinds the surface of a workpiece with a grinding tool. Most grinders use high-speed rotating grinding wheels for grinding, and a few use other grinding tools and free abrasives such as oilstone and abrasive belt for processing, such as honing machine, ultra-finishing machine tool, abrasive belt grinder, grinder and polisher. Grinders can process materials with high hardness, such as hardened steel and cemented carbide. It can also process brittle materials, such as glass and granite. The grinder can grind with high precision and small surface roughness, and can also grind with high efficiency, such as strong grinding. In the 193s, in order to adapt to the hardened processing of watches, bicycles, sewing machines and firearms, Britain, Germany and the United States developed grinding machines using natural abrasive wheels respectively. These grinders were modified by adding grinding heads to existing machine tools such as lathes and planers at that time. They are simple in structure, low in stiffness and prone to vibration during grinding, requiring operators to have high skills to grind precise workpieces. The universal cylindrical grinder manufactured by Brown-Sharp Company of the United States, which was exhibited in Paris Expo in 1876, is the first machine with the basic characteristics of modern grinder. Its workpiece headstock and tailstock are installed on the reciprocating worktable, and the box-shaped lathe bed improves the rigidity of the machine tool and has internal grinding accessories. In 1883, the company made a surface grinder with the grinding head mounted on the column and the workbench moving back and forth. Around 19, the development of artificial abrasives and the application of hydraulic transmission greatly promoted the development of grinding machines. With the development of modern industry, especially automobile industry, various types of grinders have come out one after another. For example, at the beginning of the 2th century, planetary internal grinder, crankshaft grinder, camshaft grinder and piston ring grinder with electromagnetic sucker were developed successively. Automatic measuring devices were applied to grinding machines in 198. Around 192, centerless grinders, double-ended grinders, roller grinders, guideway grinders, honing machines and superfinishing machine tools were successively made and used. In 195s, a high-precision cylindrical grinder for mirror grinding appeared. At the end of 196s, high-speed grinders and surface grinders with large cutting depth and slow feed grinding appeared. In the 197s, digital control and adaptive control technology with microprocessor were widely used in grinding machines. With the increase of the number of high-precision and high-hardness mechanical parts and the development of precision casting and precision forging technology, the performance, variety and output of grinding machines are constantly improving and increasing. Grinders are the most varied of all kinds of metal cutting machine tools. The main types are cylindrical grinder, internal grinder, surface grinder, centerless grinder and tool grinder. Cylindrical grinder is the most widely used grinder, which can process all kinds of cylindrical and conical outer surfaces and shoulder end faces. The universal cylindrical grinder also has internal grinding accessories, which can grind internal holes and internal and external conical surfaces with large taper. However, the degree of automation of cylindrical grinder is low, and it is only suitable for small and medium-sized batch single-piece production and repair work. The spindle speed of grinding wheel of internal grinder is very high, and it can grind the surface of cylindrical and conical inner hole. Ordinary internal grinder is only suitable for single piece and small batch production. Automatic and semi-automatic internal grinder can automatically measure in machining besides automatic working cycle, which is mostly used in mass production. Generally, the workpiece of a surface grinder is clamped on the workbench, or fixed on the electromagnetic workbench by electromagnetic suction, and then the surface of the workpiece is ground with the periphery or end face of the grinding wheel; Centerless grinder usually refers to a centerless cylindrical grinder, that is, the workpiece is centered and supported without a center or chuck, and the workpiece is located on the ground cylindrical surface, and the workpiece is located between the grinding wheel and the guide wheel and supported by the supporting plate. This kind of grinder has high production efficiency, is easy to realize automation, and is often used in mass production. Tool grinder is a grinder specially used for tool manufacturing and tool sharpening, including universal tool grinder, bit edge grinder, broaching edge grinder, tool curve grinder, etc., which are mostly used in tool workshops of tool manufacturers and machinery manufacturers. Abrasive belt grinder uses a fast-moving abrasive belt as a grinding tool, and the workpiece is supported by a conveyor belt. The efficiency is several times higher than that of other grinders, and the power consumption is only a fraction of that of other grinders. It is mainly used to process large-size plates, heat-resistant and difficult-to-process materials and mass-produced plane parts. Specialized grinder is a grinder that grinds a certain kind of parts, such as crankshaft, camshaft, spline shaft, guide rail, blade, bearing raceway, gear and thread. In addition to the above categories, there are honing machines, grinders, coordinate grinders and billet grinders.

question 3: what is the full name of the grinder? What are the names and uses of its parts? There are many kinds of grinders! Internal and external circular grinding of surface grinder ... What kind do you mean?

question 4: what is a process grinder? Hello, I see that your question will be squeezed out of the question list by the newly asked question. If the question is unanswered, it will be deducted and the reward points will be confiscated! So I give you a few suggestions: First, you can choose to ask questions in the correct classification or go to the professional website forums related to your questions, so that more people will know the answers to your questions and more people will answer them. Second, you can get to know more knowledgeable netizens and keep in touch with those who have answered your questions. When you encounter problems, you can ask these friends directly, and they will be more sincere and enthusiastic to find answers for you. Third, what you should do must be done by yourself, and some things must be solved by your own intelligence. It is impossible for others to do it for you! Only when you do it yourself can you truly belong to yourself. Others can only give you guidance and advice, and ultimately rely on yourself. You may not take my answer, but please take my advice! Although my answer may not solve your problem, it will certainly make you use it better. Question 5: What is the purpose of the grinder? What is it mainly for? Grinding machine, mainly finishing, grinding plane, grinding excircle, grinding inner hole, grinding end face, etc. It is mainly used for grinding parts (surfaces) with high hardness, strict dimensional accuracy and shape and position tolerance after quenching.

question 6: what are the characteristics of ultra-precision grinder? The precision grinder can grind various planes and complex molding surfaces, and is suitable for grinding without motorized feed. The main shaft adopts P4 precision rolling bearing and labyrinth seal, which has good waterproof and dustproof performance, stable movement and high precision. The ball steel guide rail is used in the longitudinal direction, which is light and flexible to operate, and the column adopts a long-span guide rail, which has good rigidity and high stability. The whole machine adopts manual oil pump for centralized lubrication.

question 7: what is the basic operation of the grinder? First, seriously implement the relevant provisions of the General Operating Rules for Metal Cutting Machine Tools.

2. Seriously implement the following general regulations on grinding machines

(1) When installing a new grinding wheel, it must be done as follows:

1. Carefully check the new grinding wheel. If there are cracks or scars, it is strictly forbidden to use it.

2. The new grinding wheel should be carefully balanced twice, that is, once before installation, the spindle should be fitted with diamond and then removed for balance.

3. When installing a new grinding wheel, a paper pad of .5 ~ 2mm should be lined between the grinding wheel and the flange. Flange screws should be tightened evenly, but don't press them excessively to avoid crushing the grinding wheel.

4. After the new grinding wheel is installed, idle running shall be carried out at the working speed for not less than 5 minutes, and work can be started only after the installation is correct and the grinding wheel works normally.

(2)

Before work, check that the grinding wheel and the grinding wheel cover should be intact without cracking, installed correctly and fastened reliably. Machine tools without grinding wheel covers are not allowed to start.

(3) Do it carefully in the work:

1. Before starting the grinding wheel every time, put the hydraulic start-stop cutting in the stop position, put the adjusting handle in the lowest speed position, and put the quick feed handle of the grinding wheel seat in the backward position to avoid accidents.

2. Before starting the grinding wheel every time, start the lubricating pump or the oil pump of the hydrostatic oil supply system. Only after the grinding wheel spindle is lubricated normally, the mercury switch is jacked up or the hydrostatic pressure reaches the designed value, can the grinding wheel rotate.

3. At the beginning of grinding, the cutting speed should be slower and the feed rate should be smaller to prevent the grinding wheel from breaking due to cold brittleness, especially when the temperature is low in winter.

4. When the grinding wheel is rapidly introduced into the workpiece, it is forbidden to feed the workpiece by motor or enter the broadsword. Pay attention to the protruding edges and corners of the workpiece to prevent collision.

5. When the temperature of the grinding wheel spindle exceeds 6°C, it must stop and work again after the temperature returns to normal.

6. It is forbidden to use the grinding wheel of a grinder to grind things like an ordinary grinder.

(4)

In the machine tool using coolant, the cooling pump should be turned off after work, and the grinding wheel should idle for a few minutes to clean the coolant before stopping the grinding wheel from rotating.

Third, seriously implement the following special regulations on grinding machines.

(1) Centerless grinder:

1. The supporting plate for supporting the grinding workpiece and the installation position of the supporting plate should meet the requirements of grinding the workpiece. Prevent accidents caused by inappropriateness.

2. It is forbidden to grind workpieces with curved or unmachined surfaces. The machining allowance of the workpiece shall not exceed .3mm..

3. When using the maximum speed to correct the guide wheel, the change gear should be disengaged to prevent the bevel gear from being damaged; When using normal speed to correct the guide wheel, the helical gear should be disengaged and the change gear should be hung.

(2) External grinder, end grinder, crankshaft and camshaft grinder:

1.

Before grinding, the distance between the grinding wheel and the workpiece should be adjusted to avoid the grinding wheel colliding with the workpiece when the grinding wheel seat is introduced quickly.

2. The machining allowance of the workpiece is generally not allowed to exceed .3mm.. It is forbidden to grind a workpiece that has not been machined.

3. When grinding workpieces with splines, keyways and oblate surfaces, the feed rate should be small, and the grinding speed should not be too fast to prevent occurrence and collision.

4. When correcting the grinding wheel, the grinding wheel seat should be introduced quickly before the grinding wheel is corrected.

(3) Internal grinder:

Before starting the grinding wheel, the reversing handle must be placed at the position where the grinding wheel leaves the workpiece to avoid accidents.

(4) Surface grinder:

1. Before working, turn on the magnetic disk switch, check that the suction of the magnetic disk meets the requirements, and check that the interlocking device between the magnetic disk and the grinding wheel is reliable and easy to use.

2. When placing the workpiece, try to clean the magnetic disk. For the workpiece with high grinding or small bottom area, it is necessary to add a stop with appropriate height (generally 3 ~ 5mm lower than the workpiece) and use it to pull the workpiece to check whether it is sucked firmly.

3. It is forbidden to grind thin iron plates. It is not allowed to grind the end face of the workpiece with the grinding wheel in the grinder with endless grinding structure.

(5) Huajian shaft grinder:

After the workpiece is installed, check whether the length of both ends of the indexing and grinding wheel beyond the keyway meets the requirements, and work can be started only after it is confirmed to be good.

(6) 3A64 tool grinder:

Before working, the grinding wheel speed should be selected according to the grinding wheel diameter: when the grinding wheel diameter is greater than 1mm, the rotating speed should be 3,8rpm; When the diameter of the grinding wheel is less than 1mm, the rotating speed should be 57rpm.

(7) Grinding machine for milling cutter disc edge:

After the milling cutter disc is installed, the grinding wheel is aligned with the cutter disc edge, it will run idle for one week, check whether the graduation meets the requirements, and then it can work.

(8) grinding machine with cutting edge:

1. When grinding and broaching, it must be ground from the middle. After grinding in the middle, install the center frame, and then grind the remaining teeth.

2. During grinding, the longitudinal displacement of the grinding wheel frame should be clamped.

(9) circular saw blade grinder:

After adjusting the stroke of change gear and grinding wheel according to the number of teeth and tooth height of the saw blade, it shall be applied ..... > >

question 8: what is the difference between a centerless grinder and a grinder? They all belong to cylindrical grinder

1. Ordinary cylindrical grinder, which can grind step shaft with central hole positioning, and its efficiency is lower than that of centerless grinder. 2. Centerless grinder, which is not positioned by the central hole, cannot grind the step shaft, and has high efficiency, and at the same time saves the process of drilling the central hole.

Question 9: What is grinder 818? Worktable size of grinder: 2×46(8×18″)

Maximum grinding length: 475 mm(8-3/4″)

Maximum grinding length: 23 mm(8-1/3″)

Maximum grinding length from spindle center to workbench. 4 ")

Standard magnet size: 2× 4 mm (8× 16")

Left and right feed manual stroke: 485 mm (19 ")

Front and rear feed handwheel feed (per scale): .2 mm (.8")

Front and rear feed handwheel feed (.8 ") M (.2 ")

Up-down feed handwheel feed (per revolution): 1 mm (.5")

Grinding wheel size: 18×16×32mm

(outer diameter× width× aperture): (7″×2/3″×1-1/ 4 ")

Spindle speed of grinding wheel: 3,6 rpm

Weight (gross weight): 91kgs

Packing size: 1,4× 1,2× 1,98mm

Question 1: What's the difference between a grinder and a grinder? A grinder wears a mask and holds a grinder for grinding, which generally requires no skills and can bear hardships and be punished. Grinders are the public who operate grinder equipment, and they need skills, which are more promising than grinders.