CN107457703A - A kind of end surface full jumping is better than 2 μm of bronze boart boart wheel disc precise dressing method - Google Patents

Abstract

The invention discloses a method for finely trimming a bronze diamond grinding wheel disc with a full runout of an end surface better than 2 μm, belonging to the technical field of high-precision diamond tool manufacturing. The main steps of the method of the present invention include: rough grinding of the surface of the bronze diamond grinding wheel, preliminary dynamic balancing of the bronze diamond grinding wheel, rough dressing of the surface of the bronze diamond grinding wheel, precise dynamic balancing of the bronze diamond grinding wheel, and fine dressing of the surface of the bronze diamond grinding wheel. Through the fine dressing process of the diamond grinding wheel disc, the influence of the finishing process parameters such as the spindle speed, dressing pressure, dressing depth in a single feed, and the reciprocating frequency of the spindle on the total runout of the bronze diamond grinding wheel disc were analyzed in detail, and the precision was selected. Modify process parameters. The surface precision of the bronze diamond grinding wheel disk obtained by the method of the invention is very high, and the total runout of the end surface is better than 2 μm, which promotes the development of the fine dressing technology of the bronze diamond grinding wheel disk.

Description

A method for fine dressing of bronze diamond grinding wheel disc with full runout of end face better than 2 μm

technical field

The invention relates to a method for precisely trimming a bronze diamond grinding wheel disc, and belongs to the technical field of high-precision diamond cutter manufacturing.

Background technique

With the development of cutting-edge technologies such as nuclear energy, lasers, and astronomical telescopes, the role of ultra-precision processing technology is becoming more and more important, and it has become a symbol of the highest level of a country's manufacturing industry. In ultra-precision machining, precision high-performance machine tools and an extremely stable machining environment are essential, and high-precision tools are also crucial. At present, the traditional mechanical sharpening method is still the main method for manufacturing high-precision diamond tools. In the mechanical sharpening process of diamond tools, the grinding wheel directly interacts with the diamond tools. The surface roughness of the high-speed rotating grinding wheel will affect the microscopic contact state between the tool and the grinding wheel surface, change the dynamic grinding depth of the tool during grinding, generate vibration between the tool and the grinding wheel surface, and form the microscopic impact of the abrasive grains on the surface of the grinding wheel. It directly affects the quality of the diamond tool sharpened. Therefore, in order to ensure the precision of the grinding wheel surface and improve the grinding quality of diamond tools, it is of good practical value to study the precision dressing technology of the grinding wheel surface.

The metal bonded diamond grinding wheel is sintered with diamond abrasive grains and metal powder. The diamond abrasive grains embedded in the bond retain the characteristics of high hardness and wear resistance, so it is difficult to dress the diamond grinding wheel. Scholars at home and abroad have done a lot of research work in the field of dressing technology of superabrasives such as diamond grinding wheels, and developed some effective process methods.

Diamond turning method is a traditional and commonly used grinding wheel dressing method. The turning method dressing process is similar to the turning method on the lathe. The diamond dressing tool dresses the working surface of the grinding wheel with a certain dressing depth and feed speed to make the working surface of the grinding wheel meet the required accuracy. The turning method includes single-point diamond pen trimming and multi-point diamond pen trimming, which has low trimming cost and high trimming accuracy.

The grinding and dressing method is a method of dressing a diamond grinding wheel by grinding with a silicon carbide grinding wheel. In dressing, its dressing efficiency is low, and the silicon carbide grinding wheel wears quickly. Japanese scholar Shoji Katsuo proposed a method of using a cup-shaped green silicon carbide grinding wheel to repair a metal bonded diamond grinding wheel. The green silicon carbide abrasive grains that fall off from the dressing wheel during dressing can remove the metal bond around the diamond abrasive grains. In the process of shaping the diamond grinding wheel, it can also be sharpened at the same time. The trimming accuracy of this trimming method is low.

The rolling dressing method uses the rolling dressing wheel in direct contact with the rotating diamond grinding wheel to be dressed. The diamond grinding wheel drives the rolling wheel to rotate, and the rolling and relative friction between the two are used for dressing. Rolling wheels can be ordinary grinding wheels, carbide rollers or hardened steel rollers. This method is simple, but the trimming ability is poor and the trimming accuracy is low.

The online electrolytic dressing method is a grinding wheel dressing technology developed by Japanese scholars in 1985. In the early stage of the development of this technology, it mainly aimed at the grinding process of ceramic materials, and carried out online dressing of metal bonded diamond grinding wheels. It was found that this dressing method has a better effect on grinding hard and brittle materials. This method uses the metal bond superabrasive grinding wheel as the anode, and exposes the abrasive grains of the grinding wheel through electrolysis to form a sharp cutting edge and a chip space to realize the dressing of the grinding wheel. The dressing efficiency is high, but the dressing equipment is complicated.

The laser trimming method uses a certain intensity laser to irradiate the surface of the diamond grinding wheel. By adjusting the laser power density to make it higher than the bond removal threshold and higher than the diamond particle removal threshold, the diamond abrasive grains and its bond can be removed at the same time. Realize the shaping and sharpening of the grinding wheel. This method has high trimming efficiency and can trim complex profiles, but the trimming accuracy is not ideal.

Contents of the invention

The purpose of the present invention is to propose a method for precise dressing of a bronze diamond grinding wheel disc with a full run-out of the end face better than 2 μm in order to meet the requirements of the high-precision diamond tool mechanical sharpening technology for a precision diamond grinding wheel disc.

The main steps of the process method designed by the invention include: rough grinding of the disc surface, preliminary dynamic balancing of the emery wheel disc, rough dressing of the disc surface, precise dynamic balancing of the emery wheel disc and fine dressing of the disc surface. Through the fine dressing process experiment of the bronze diamond grinding wheel disc, the influence of the spindle speed, dressing pressure, single feed dressing depth and the reciprocating frequency of the main shaft on the total runout of the end face of the bronze diamond grinding wheel was analyzed in detail, and the finishing process parameters were optimized. The surface precision of the bronze diamond grinding wheel disc trimmed by the invention is very high, and the total runout of the end face is better than 2 μm, which promotes the development of the current fine dressing technology of the diamond grinding wheel disc.

The purpose of the present invention is achieved through the following technical solutions:

A method for finely dressing a bronze diamond grinding wheel disc with a full runout of an end surface better than 2 μm, the steps of the method are as follows:

Step 1: Coarse grinding of the surface of the bronze diamond grinding wheel; on the flat grinding machine, the bottom surface of the bronze diamond grinding wheel is positioned, and the ceramic or resin diamond grinding wheel is used to grind the top surface of the bronze diamond grinding wheel. The cutting depth is set to 10-15 μm, and the grinding can be stopped until the top surface of the bronze diamond grinding wheel is ground flat;

Step 2: Preliminary dynamic balance of the bronze diamond grinding wheel; install the bronze diamond grinding wheel on a special fixture, and then install it on a dynamic balancing machine to detect the mass eccentricity and eccentric position of the bronze diamond grinding wheel. Mark the bottom surface of the disk according to the position indicated by the dynamic balancing machine, remove the grinding wheel disk, calculate the required drilling depth at the mark according to the detected eccentricity, the material density of the bottom surface of the bronze diamond grinding wheel disk and the diameter of the drill bit, and then complete it on the drilling machine Drilling operations to remove excess eccentric mass;

Step 3: Coarse trimming of the surface of the bronze diamond grinding wheel; install the bronze diamond grinding wheel mounted on the special fixture on the main shaft of the diamond tool grinder, and then use a single surface welded with irregular natural diamond particles with an average particle size of 1mm on the head. Click on the dressing pen, install it on the indexing fixture of the diamond tool grinder, and then roughly trim the surface of the bronze diamond grinding wheel. Set the trimming process parameters: spindle speed 3000-3600r/min, dressing pressure 15-20N, single feed The trimming depth is 2~3μm, the reciprocating frequency of the spindle is 0.08~0.10Hz;

Step 4: Precise dynamic balance of the bronze diamond grinding wheel disc; remove the bronze diamond grinding wheel disc from the spindle of the diamond tool grinder, and then install it on the dynamic balancing machine for fine dynamic balancing again;

Step 5: Remove the single-point trimming pen with irregular natural diamond particles with an average particle size of 1 mm welded on the head, and then install the single-point diamond trimming pen with a 60° conical tip on the indexing fixture of the diamond tool grinder. The pendulum shaft of the diamond tool grinding machine is reset. After the reset is completed, set the angle between the axis of the indexing fixture and the surface of the bronze diamond grinding wheel to be 31° to 35°. Use 800# bronze diamond grinding wheel to place the single point The nib of the diamond trimming pen is sharpened by rolling and grinding, and it can stop when the sound of rolling is uniform and continuous;

Step 6: Install the bronze diamond grinding wheel disc after the precise dynamic balance in step 4 on the spindle of the diamond tool grinder again, and reset the pendulum shaft again. After the reset is completed, set the axis of the indexing fixture and the bronze diamond The angle between the grinding wheel disc surface is 75°～80°;

Step 7: Constant temperature control The ambient temperature of the diamond tool grinder is 20-25°C, and the constant temperature accuracy is ±0.5°C. Under the normal working condition of the spindle cooling water circulation system of the diamond tool grinder, the diamond tool grinder is left standing without load to make it The performance reaches a steady state;

Step 8: Finishing of the bronze diamond grinding wheel disc surface; adopting the preferred finishing process parameters to carry out finishing dressing of the bronze diamond grinding wheel disc;

Step 9: Install the laser displacement sensor on the diamond tool grinding machine to perform in-situ detection on the trimmed flat surface of the bronze diamond grinding wheel disc, and measure the full runout value of the end face of the bronze diamond grinding wheel disc.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention provides a process method suitable for fine dressing of bronze diamond grinding wheel discs. The process steps of rough grinding of the disc surface, preliminary dynamic balancing of the grinding wheel disc, rough dressing of the disc surface, precise dynamic balancing of the grinding wheel disc and fine dressing of the disc surface are rationally designed. . In order to minimize the end run-out of the diamond grinding wheel disc, the finishing process parameters of the diamond grinding wheel disc were optimized through a comprehensive analysis of the spindle speed, dressing pressure, dressing depth in a single feed and the reciprocating frequency of the main shaft, and the obtained disc surface has high precision. , the full runout of the end face is better than 2 μm, which satisfies the diamond grinding wheel disc required for the current high-precision diamond tool sharpening.

2. The present invention is easy to operate and low in cost, and the diamond grinding wheel disk obtained by trimming has high precision. By adopting the present invention, the bronze diamond grinding wheel with the working surface size of Φ35-Φ86mm is precisely trimmed, and the full run-out value of the end surface can be less than 2 μm in the on-site detection. At this time, the grinding wheel disk works at a speed of 3000-4200r/min, and the single-point diamond dressing pen projection can be observed by the optical monitoring system that comes with the diamond tool grinder, and it can be static.

Description of drawings

Figure 1 is a picture of a bronze diamond grinding wheel;

Figure 2 is a picture of the special fixture for installing the bronze diamond grinding wheel disc;

Figure 3 is a picture of a dynamic balancing machine for performing dynamic balance detection on bronze diamond grinding wheel discs;

Fig. 4 is the picture of the diamond tool grinding machine used for dressing the bronze diamond grinding wheel disc;

Figure 5 is a schematic diagram of the movement of the key components of the bronze diamond tool grinder;

Fig. 6 is a picture of a single-point dressing pen with an average particle diameter of 1mm irregular natural diamond particles welded to the head used for rough dressing;

Fig. 7 is a picture of a single-point diamond trimming pen whose head is a 60° conical nib for finishing;

Figure 8 is a photo of the laser displacement sensor measuring head for full runout detection of the in-position end face of the bronze diamond grinding wheel disc.

detailed description

The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

Specific embodiment 1: a method for finely dressing a bronze diamond grinding wheel disc with a full runout of an end surface better than 2 μm, the steps of the method are as follows:

Step 1: Coarse grinding of the surface of the bronze diamond grinding wheel; on the flat grinding machine, the bottom surface of the bronze diamond grinding wheel is positioned, and the ceramic or resin diamond grinding wheel is used to grind the top surface of the bronze diamond grinding wheel. The cutting depth is set to 10-15 μm, and the grinding can be stopped until the top surface of the bronze diamond grinding wheel is ground flat, as shown in Figure 1;

Step 2: Preliminary dynamic balance of the bronze diamond grinding wheel disk; install the bronze diamond grinding wheel disk on the special fixture shown in Figure 2, and then install it on the dynamic balancing machine shown in Figure 3 to detect the mass eccentricity of the bronze diamond grinding wheel disk and For the eccentric position, mark the position indicated by the dynamic balancing machine on the bottom of the bronze diamond grinding wheel disc according to the test results, remove the grinding wheel disc, and calculate the marked position according to the detected eccentricity, the material density of the bottom surface of the bronze diamond grinding wheel disc and the diameter of the drill bit Drill the hole to the desired depth, then complete the drilling operation on a drill press to remove excess eccentric mass. When calculating the required drilling depth, assume that the detected eccentricity is m, the material density of the diamond grinding wheel surface is ρ, the diameter of the drill used is d, and the apex angle of the drill is φ, then the calculation of the required drilling depth h The formula is as follows:

Step 3: Coarse trimming of the bronze diamond grinding wheel surface; install the bronze diamond grinding wheel mounted on the special fixture on the spindle of the diamond tool grinding machine shown in Figure 4 and Figure 5, and then use the head as shown in Figure 6 to weld the A single-point dressing pen with an average particle size of 1mm and irregular natural diamond particles is installed on the indexing fixture of the diamond tool grinder shown in Figure 5, and then the surface of the bronze diamond grinding wheel is roughly trimmed, and the trimming process parameters are set as: spindle The speed is 3000~3600r/min, the dressing pressure is 15~20N, the dressing depth is 2~3μm in a single feed, and the reciprocating frequency of the main shaft is 0.08~0.10Hz;

Before dressing, use the optical monitoring system that comes with the diamond tool grinder to observe the single-point dressing pen head welded with irregular natural diamond particles with an average particle size of 1mm, and adjust the swing axis shown in Figure 4 and Figure 5 (the swing axis is The position of a component in the assembly) ensures that the sharp part of the diamond particles on the head of the single-point trimming pen head welded with irregular natural diamond particles with an average particle size of 1mm participates in the trimming;

Step 4: Precise dynamic balance of the bronze diamond grinding wheel disc; remove the bronze diamond grinding wheel disc from the spindle of the diamond tool grinder, and then install it on the dynamic balancing machine for fine dynamic balancing again;

Step 5: Remove the single-point trimming pen with irregular natural diamond particles with an average particle size of 1 mm welded on the head, and then install the single-point diamond trimming pen with a 60° conical tip shown in Figure 7 on the On the indexing fixture of the diamond tool grinder, perform zero reset operation on the pendulum shaft of the diamond tool grinder shown in Figure 4 and Figure 5, and set the axis of the indexing fixture as shown in Figure 5 and the surface clamp of the bronze diamond grinding wheel disc after clearing is completed. The angle is 31°～35°. Use 800# bronze diamond grinding wheel to sharpen the tip of the single-point diamond dressing pen with a 60° conical tip until the sound of the grinding is uniform and continuous.

Step 6: Install the bronze diamond grinding wheel disk after the precise dynamic balance in step 4 on the main shaft of the diamond tool grinder shown in Figure 4, and reset the pendulum shaft described in Figure 4 and Figure 5 again, and the zeroing is completed Then set the angle between the axis of the indexing fixture shown in Figure 5 and the surface of the bronze diamond grinding wheel to be 75° to 80°;

Step 7: Constant temperature control Figure 4 The ambient temperature of the diamond tool grinder is 20°C to 25°C, and the constant temperature accuracy is ±0.5°C. Under the normal working condition of the spindle cooling water circulation system of the diamond tool grinder, the diamond tool is ground without load. Machine, so that its performance reaches a stable state;

Step 8: Finishing of the bronze diamond grinding wheel disc surface; adopting the preferred finishing process parameters to carry out finishing dressing of the bronze diamond grinding wheel disc;

Step 9: As shown in Figure 8, install the laser displacement sensor on the diamond tool grinding machine to perform in-situ detection on the trimmed flat surface of the bronze diamond grinding wheel disc after finishing, and measure the full runout value of the end face of the bronze diamond grinding wheel disc.

According to the above steps, the bronze diamond grinding wheel with the working face size of Φ35-Φ86mm is finely dressed, and the end face full runout value of the in-situ detection can be better than 2μm, reaching a high level of precision.

Bronze diamond grinding wheel disc, special fixture, dynamic balancing machine, diamond tool grinder, single-point diamond dressing pen welded with irregular natural diamond particles with an average particle size of 1 mm, and single-point diamond dressing pen with 60° conical pen tip are all available technology.

Specific embodiment 2: This embodiment is a further description of specific embodiment 1. In the step 3, use the optical monitoring system that comes with the diamond tool grinder to observe the single-point trimming pen tip of the large-grain natural diamond before trimming. and adjust the position of the pendulum axis to ensure that the sharp part of the diamond particles on the head of the single-point dressing pen with an average particle size of 1mm irregular natural diamond particles is welded to the head to participate in the trimming. After each trimming for 30 minutes, the laser displacement sensor is installed on the On-site inspection of the dressing accuracy of the bronze diamond grinding wheel surface on the diamond tool grinding machine, if the total runout value of the end surface of the bronze diamond grinding wheel disc is less than 5 μm, proceed to step 4, otherwise repeat step 3 until the full runout value of the end surface of the grinding wheel disc is less than 5 μm until.

Specific implementation mode three: this implementation mode is a further description of specific implementation mode one or two, and the specific steps of the described step four are as follows:

Remove the bronze diamond grinding wheel from the main shaft of the grinding machine shown in Figure 4, install the bronze diamond grinding wheel on the dynamic balancing machine shown in Figure 3 to detect the mass eccentricity and eccentric position of the bronze diamond grinding wheel, press the button on the bottom of the bronze diamond grinding wheel Mark the position indicated by the dynamic balancing machine, remove the bronze diamond grinding wheel, calculate the required drilling depth at the mark according to the detected eccentricity, the material density of the bottom surface of the bronze diamond grinding wheel and the diameter of the drill bit, and then drill on the drilling machine Hole operation, after the drilling is completed, check the mass eccentricity and eccentric position of the bronze diamond grinding wheel on the dynamic balancing machine. If the mass eccentricity of the bronze diamond grinding wheel is less than 0.1g, you can proceed to step 5, otherwise repeat step 4 to the bronze diamond grinding wheel Disc mass eccentricity is less than 0.1g.

Embodiment 4: This embodiment is a further description of Embodiment 1. In the eighth step, the bronze diamond grinding wheel disc is finely dressed, and the finishing process parameters are set as: spindle speed 3000r/min, dressing pressure 14.7N, single feed dressing depth 1μm, main shaft reciprocating frequency 0.08Hz, during the finishing process, the feeding box is fed 8 times as shown in Figure 5, and each time finishing to the single point of the 60° conical pen tip when dressing. Point the tip of the diamond dressing pen to evenly and consistently scratch the surface of the bronze diamond grinding wheel, the sound is small and even and continuous, and then continue to feed 1μm, and start a new finishing.

Claims (5)

1. a kind of end surface full jumping is better than 2 μm of bronze boart boart wheel disc precise dressing method, it is characterised in that：Described side Method step is as follows：

Step 1：The corase grind of bronze boart boart wheel face；On plain grinding lathe, with bronze skive try to get to the heart of a matter face positioning, The disk top surface of bronze boart boart wheel disc is ground using ceramics or resin diamond grinding wheel, the grinding depth of single feeding 10~15 μm are set to, being repeatedly ground to bronze boart boart wheel disc top surface and being ground smooth can stop；

Step 2：The preliminary dynamic balancing of bronze boart boart wheel disc；Bronze boart boart wheel disc is installed on special fixture, so It is installed on afterwards on dynamic balancing machine and detects bronze boart boart wheel disc mass eccentricity amount and eccentric position, is existed according to testing result Bronze skive face position as indicated by dynamic balancing machine of trying to get to the heart of a matter performs mark, abrasive disc is removed, according to the bias detected Amount, bronze skive try to get to the heart of a matter face density of material and bit diameter calculates drilling depth needed for mark, then in drilling machine Upper completion drilling operation, removes unnecessary eccentric mass；

Step 3：The thick finishing of bronze boart boart wheel face；Bronze boart boart wheel disc on special fixture is installed Average grain diameter is welded with as the irregular natural diamond particles of 1mm on the main shaft of diamond cutter abrasive machine, then using head Single-point finishing pen, mount it to after the indexing fixture of diamond cutter abrasive machine bronze boart boart wheel face is carried out it is thick Finishing, setting trim process parameter are：3000~3600r/min of the speed of mainshaft, repair 15~20N of pressure, single feeding finishing 2~3 μm of depth, 0.08~0.10Hz of spindle reciprocating motion frequency；

Step 4：The Precision Balancing of bronze boart boart wheel disc；By bronze boart boart wheel disc from diamond cutter abrasive machine Removed on main shaft, then it is installed on dynamic balancing machine Precision Balancing is carried out again to it；

Step 5：Head is welded with into the single-point finishing pen that average grain diameter is the irregular natural diamond particles of 1mm to remove, then will The single-point diamond finishing pen of 60 ° of circular cone nibs is installed on diamond cutter abrasive machine indexing fixture, and diamond cutter is ground The balance staff of grinding machine is zeroed out operation, and described indexing fixture axis and bronze boart boart wheel disc card are set after the completion of clearing Angle is 31 °~35 °, using 800# bronze boart boart wheel disc that the nib barreling of single-point diamond finishing pen is sharp, extremely Sound that barreling is sent is uniformly, can continuously stop；

Step 6：Bronze boart boart wheel disc after step 4 Precision Balancing is installed on diamond cutter grinding again On owner's axle, clear operation is re-started to described balance staff, indexing fixture axis and bronze diamond are set after the completion of clearing Abrasive disc card angle is 75 °~80 °；

Step 7：Thermostatic control diamond cutter abrasive machine ambient temperature is 20~25 DEG C, constant-temperature precision ± 0.5 DEG C, Under the main shaft cooling water recirculation system normal operation of diamond cutter abrasive machine, zero load stands diamond cutter abrasive machine, Its performance is set to reach stable state；

Step 8：The finish trimming of bronze boart boart wheel face；Using preferable finish trimming technological parameter to bronze boart boart Wheel disc carries out finish trimming；

Step 9：Laser displacement sensor is installed on diamond cutter abrasive machine to the bronze skive after finish trimming Disk is trimmed flat surface and detected in place, measures bronze skive side surface total run-out value.

2. a kind of end surface full jumping according to claim 1 is better than 2 μm of bronze boart boart wheel disc precise dressing method, It is characterized in that：In described step two, if the offset size detected is m, boart boart wheel face density of material is ρ, Used bit diameter is d, drill head apical angle φ, then required drilling depth h calculation formula is as follows：

。

3. a kind of end surface full jumping according to claim 1 is better than 2 μm of bronze boart boart wheel disc precise dressing method, It is characterized in that：In described step three, the preceding optical monitoring system viewing head carried using diamond cutter abrasive machine is repaired Portion is welded with the single-point finishing nib portion that average grain diameter is the irregular natural diamond particles of 1mm and adjusts balance staff position, head weldering The sharp parts for having the single-point finishing nib portion diamond particles that average grain diameter is the irregular natural diamond particles of 1mm participate in repairing It is whole, after finishing 30min every time, laser displacement sensor is installed on diamond cutter abrasive machine to bronze skive The dressing accuracy of card is detected in place, if bronze skive side surface total run-out value is less than 5 μm, can proceed with Step 4 operates, untill otherwise repeat step three to abrasive disc end surface full jumping value is less than 5 μm.

4. a kind of end surface full jumping according to claim 1 or 3 is better than 2 μm of bronze boart boart wheel disc precise dressing side Method, it is characterised in that：Described step four comprises the following steps that：

Bronze boart boart wheel disc is installed on dynamic balancing machine and detects bronze boart boart wheel disc mass eccentricity amount and eccentric position Put, perform mark in bronze skive face position as indicated by dynamic balancing machine of trying to get to the heart of a matter, remove bronze boart boart wheel disc, root Try to get to the heart of a matter face density of material according to the offset, the bronze skive that are detected and bit diameter calculate drilled needed for mark it is deep Degree, drilling operation is then carried out on drilling machine, detects bronze boart boart wheel disc matter after the completion of drilling on dynamic balancing machine again Offset and eccentric position are measured, if bronze boart boart wheel disc mass eccentricity amount is less than 0.1g, step 5 operation can be carried out, it is no Then repeat step four is untill bronze boart boart wheel disc mass eccentricity amount is less than 0.1g.

5. a kind of end surface full jumping according to claim 1 is better than 2 μm of bronze boart boart wheel disc precise dressing method, It is characterized in that：In described step eight, finish trimming technological parameter is arranged to：Speed of mainshaft 3000r/min, repair pressure 14.7N, single feeding 1 μm of depth of finishing, spindle reciprocating motion frequency 0.08Hz, 8 feedings of finish trimming process point, each refine Single-point diamond to 60 ° of circular cone nibs during finishing streaks bronze boart boart sheave surface with repairing a nib uniformity, The sound sent is tiny and uniformly continuous can continue 1 μm of feeding, starts a new refine.