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Ningbo Haigesi Electromechanical Manufacturing Co.

宁波海格斯机电制造有限公司


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地址:浙江省宁波市北仑区天台山路236

Contact: manager Yang

Telephone: 0574-26857988

Phone: 15658228286

Address: No.236 Tiantaishan Road, Beilun District, Ningbo

Website :  en.nbhgsjd.com 


Precision grinder industry is facing a severe test

2019-07-19
times

For many surface grinding machine equipment, in the use of time due to the need to change some spindle Angle bearing, in order to be necessary to manipulate the staff to understand some of the relevant operating knowledge.The spindle is a key part of the compact grinder, can be said to be the heart of the grinder, such as M8612 spline grinder, M250A internal hole grinder, M3A64 thing grinder, their spindle is to take the ring type angular bearing.The installation and adjustment requirements of the spacer type angular bearing are very severe, which is an old and difficult problem in maintenance. It often troubles the repair of machine tools.The workpiece roughness or roundness of the deviation is generally related to the spindle Angle bearing, should adjust or change a new bearing.

Spacer type angular bearing and installation adjustment精密磨床行业正面临着严格考验

Angular ball bearing is often used on the tight grinding machine. It can be subjected to both radial and axial loads. The load is determined by the battle Angle.Separated ring type angular bearing in pairs, adjust to suimi, seriously, must have the necessary maintenance experience.The adjustment methods are as follows:

(1) measurement method.This kind of method is more accurate, need to calculate, but the operation is cumbersome.So only in the utility manufacturers use, in equipment maintenance things, because the premise does not have, maintenance staff is very rare.

(2) feeling method.This kind of way does not require measuring instruments, ningbo road brake sheet metal manufacturers only according to the theory of experience to confirm the thickness of the inner and outer ring, so in the equipment maintenance of the use of force is common.

(1) press two bearings with both thumb and index finger, eliminate the clearance, middle finger into the bearing hole and stir the inner ring. Feel whether the resistance is different from the outer ring.

(2) a hand with two fingers to eliminate two bearings full clearance and pressure, the other hand fingers pull the table ring, feel the resistance is not divided.Precision grinder industry is facing a severe test

(3) the pair of two bearings in accordance with its assembly style and the outer and inner ring, in its upper part with a proportionate weight in the pre-loading load, and then through the process of drilling three bisection pinhole spur inner ring, feel inner and outer ring resistance should be divided, or grinding ring, until the feeling of inner and outer ring resistance division.No matter which way the measurement is made, it is different from the object of bearing measurement at the time of installation, that is, directional assembly.The accuracy of the spindle is very high, 150mm away from the front face of the grinding head, the radial run-out tolerance is only 0.005mm.Therefore, the bearing table and table separation ring flatness war row must not cross 0.002mm.Therefore, the skill of maintenance staff is very high, constitute the above - mentioned repair difficult problem.

2 grinding machine spindle separation ring type Angle battle bearing repair

Model M250A internal cylindrical grinder is a special equipment purchased for finishing products in the mid-1980s.Because of the special nature of the product, the processing precision requirements are very high.After 2000, the roughness of the processed products is often out of tolerance, and every check is caused by the bearing precision landing, as shown in figure 1.And every time according to the traditional way repair, less than a few days, more than a few months, bearing for a lot of sets of talent temporarily for use, with how long also have to repair.The original decision to change the original idea, with a diagonal battle bearing instead of the original ring adjusted Angle bearing.

3 angled battle bearings

With the advance of the craft and the growth of the industry, cheng diagonal battle bearing emerged at the historic moment, this kind of bearing is the bearing manufacturers use professional technology and advanced technology wrist, according to the designated pre-load debugging, pair, group manufacturing factory.The user can install and use it without any further adjustment. Its layout, combination situation and code are shown in figure 2.

Replace the spacer type angular bearing with diagonal bearing

We take the M250A internal grinder as an example to illustrate the displacement mode.

(1) the first according to the original bearing accuracy, ring diameter and width, the number of bearings to choose a diagonal battle bearing, must put the model size.According to the current size of the bearing industry in China, the model is classified as follows: the battle Angle 15° is 70000C;25 ° 70000 ac;40 ° for 70000 b;Pair face to face is 70000C(AC, B)/DB;Split face the split face is 70000C(AC, B)/DF;The paired series is 70000C(AC, B)/DT.For example, face to face pairs of double-joint angular battle bearing have a battle Angle of 15° and the model of angular battle bearing of accuracy grade P4 is 71910C/ db-p4, as shown in figure 3.

A series of double Angle combat bearings with a combat Angle of 25°. The model number of Angle combat bearings with an accuracy grade of P4 is 71910AC/DT -- P4.

(2) install the original spacer as a tight gasket in the front and back end.

(3) carefully check the accuracy of the grinding head sleeve, the interval ring, and the nut gland, to be harsh washing, stop hammering.Not paying attention to these can lead to failure.

(4) after the assembly is completed, check the radial runout and axial runout of the spindle of the grinding machine to reach the accuracy scale.Our branch factory is successful in adopting this new method of stoppage.After two years of operation, accuracy and roughness have reached the product process requirements, things generally.We use this method to the M3A64 model east and west grinding machine stopped innovation, has been nearly a year, the accuracy is very good.

Network optimization information:

For many surface grinding machine equipment, in the use of time due to the need to change some spindle Angle bearing, in order to be necessary to manipulate the staff to understand some of the relevant operating knowledge.The spindle is a key part of the compact grinder, can be said to be the heart of the grinder, such as M8612 spline grinder, M250A internal hole grinder, M3A64 thing grinder, their spindle is to take the ring type angular bearing.The installation and adjustment requirements of the spacer type angular bearing are very severe, which is an old and difficult problem in maintenance. It often troubles the repair of machine tools.The workpiece roughness or roundness of the deviation is generally related to the spindle Angle bearing, should adjust or change a new bearing.

Spacer type angular bearing and installation adjustment

Angular ball bearing is often used on the tight grinding machine. It can be subjected to both radial and axial loads. The load is determined by the battle Angle.Separated ring type angular bearing in pairs, adjust to suimi, seriously, must have the necessary maintenance experience.The adjustment methods are as follows:

(1) measurement method.This kind of method is more accurate, need to calculate, but the operation is cumbersome.So only in the utility manufacturers use, in equipment maintenance things, because the premise does not have, maintenance staff is very rare.

(2) feeling method.This kind of way does not require measuring instruments, only according to the theoretical experience to confirm the thickness of the inner and outer ring, so in the equipment maintenance use of force is common.

(1) press two bearings with both thumb and index finger, eliminate the clearance, middle finger into the bearing hole and stir the inner ring. Feel whether the resistance is different from the outer ring.

(2) a hand with two fingers to eliminate two bearings full clearance and pressure, the other hand fingers pull the table ring, feel the resistance is not divided.

(3) the pair of two bearings in accordance with its assembly style and the outer and inner ring, in its upper part with a proportionate weight in the pre-loading load, and then through the process of drilling three bisection pinhole spur inner ring, feel inner and outer ring resistance should be divided, or grinding ring, until the feeling of inner and outer ring resistance division.Regardless of the way of measurement, the installation and bearing measurement of the target, that is, directional assembly.The accuracy of the spindle is very high, 150mm away from the front face of the grinding head, the radial run-out tolerance is only 0.005mm.Therefore, the bearing table and table separation ring flatness war row must not cross 0.002mm.Therefore, the skill of maintenance staff is very high, constitute the above - mentioned repair difficult problem.

2 grinding machine spindle separation ring type Angle battle bearing repair

Model M250A internal cylindrical grinder is a special equipment purchased for finishing products in the mid-1980s.Because of the special nature of the product, the processing precision requirements are very high.After 2000, the roughness of the processed products is often out of tolerance, and every check is caused by the bearing precision landing, as shown in figure 1.And every time according to the traditional way repair, less than a few days, more than a few months, bearing for a lot of sets of talent temporarily for use, with how long also have to repair.The original decision to change the original idea, with a diagonal battle bearing instead of the original ring adjusted Angle bearing.

3 angled battle bearings

With the advance of the craft and the growth of the industry, cheng diagonal battle bearing emerged at the historic moment, this kind of bearing is the bearing manufacturers use professional technology and advanced technology wrist, according to the designated pre-load debugging, pair, group manufacturing factory.The user can install and use it without any further adjustment. Its layout, combination situation and code are shown in figure 2.

Replace the spacer type angular bearing with diagonal bearing

We take the M250A internal grinder as an example to illustrate the displacement mode.

(1) the first according to the original bearing accuracy, ring diameter and width, the number of bearings to choose a diagonal battle bearing, must put the model size.According to the current size of the bearing industry in China, the model is classified as follows: the battle Angle 15° is 70000C;25 ° 70000 ac;40 ° for 70000 b;Pair face to face is 70000C(AC, B)/DB;Split face the split face is 70000C(AC, B)/DF;The paired series is 70000C(AC, B)/DT.For example, face to face pairs of double-joint angular battle bearing have a battle Angle of 15° and the model of angular battle bearing of accuracy grade P4 is 71910C/ db-p4, as shown in figure 3.

A series of double Angle combat bearings with a combat Angle of 25°. The model number of Angle combat bearings with an accuracy grade of P4 is 71910AC/DT -- P4.

(2) install the original spacer as a tight gasket in the front and back end.

(3) carefully check the grinding head sleeve, interval ring, nut gland accuracy, precision sheet metal processing to harsh washing, stop hammering.Not paying attention to these can lead to failure.

(4) after the assembly is completed, check the radial runout and axial runout of the spindle of the grinding machine to reach the accuracy scale.Our branch factory is successful in adopting this new method of stoppage.After two years of operation, accuracy and roughness have reached the product process requirements, things generally.We use this method to the M3A64 model east and west grinding machine stopped innovation, has been nearly a year, the accuracy is very good.

精密磨床行业正面临着严格考验


 

  

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Phone: 15658228286

Telephone: 0574-26857988

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