阅读说明：本技术 一种基于复合工序保持架不车边成型方法 (Retainer edge-turning-free forming method based on composite process ) 是由 沈坚 林晓亮 华尧中 邓小雷 邓西 周文立 于 2021-07-20 设计创作，主要内容包括：本发明涉及保持架制作技术领域,具体涉及一种基于复合工序保持架不车边成型方法；本发明进行淬火,将金属熔点底的金属先放入在熔炉中进行熔化,然后加入熔点高的金属进行熔化,然后进行冷却凝固,凝固后进行退火处理,降低硬度,改善切削加工性；消除残余应力,稳定尺寸,减少变形与裂纹倾向；细化晶粒,调整组织,消除组织缺陷,淬火：淬火的目的是使过冷奥氏体进行马氏体或贝氏体转变,得到马氏体或贝氏体组织,然后配合以不同温度的回火,以大幅提高钢的刚性、硬度、耐磨性、疲劳强度以及韧性等,从而满足各种机械零件和工具的不同使用要求,先进行淬火,在进行退火,然后进行加热成金属液,从而进行增加保持架的寿命。(The invention relates to the technical field of retainer manufacturing, in particular to a retainer edge-turning-free forming method based on a composite process; the invention carries out quenching, the metal with the metal melting point bottom is firstly put into a smelting furnace for melting, then the metal with the high melting point is added for melting, then cooling solidification is carried out, and annealing treatment is carried out after solidification, thus reducing the hardness and improving the machinability; the residual stress is eliminated, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure, eliminating the defects of the structure, and quenching: the purpose of quenching is to transform super-cooled austenite into martensite or bainite to obtain martensite or bainite structure, and then to improve the rigidity, hardness, wear resistance, fatigue strength, toughness, etc. of the steel greatly by tempering at different temperatures, so as to meet different use requirements of various mechanical parts and tools.)

1. A retainer edge turning-free forming method based on a composite process is characterized by comprising the following steps:

s1, manufacturing a die: firstly, manufacturing a male die, then manufacturing a female die, putting the male die and the female die together, checking to see whether the male die is matched with the female die and whether a gap between the two dies is the thickness of the retainer;

s2, manufacturing of the balancing weight: measuring the weight of the convex die, adding a balancing weight according to the required weight of the retainer, wherein the sum of the weights and the weight of the convex die is greater than the required force of the retainer;

s3, preparing molten metal required by the retainer: when the metal liquid of the retainer is prepared, firstly, metal with a low melting point is put into a smelting furnace for melting, and then metal with a high melting point is put into the smelting furnace;

s4, manufacturing a stirring rod: using metal with a melting point higher than that of the metal for manufacturing the retainer, and stirring the solution of the alloy to ensure that the metal solution is uniformly stirred;

s5, casting a retainer: clamping a male die and a female die together, adding molten metal into the die from a liquid inlet hole, rapidly cooling the die to normal temperature by using dry ice, opening the die, taking out a retainer, then automatically punching a window on the retainer, automatically pressing the retainer after the automatic punching of the window, and then automatically expanding the retainer;

s6, grinding: polishing the cast retainer by using a polishing tool, polishing before polishing, forming a metallic color on the surface of the retainer until the surface reflects light, cleaning after polishing, cleaning magazines on the surface of the retainer, and performing rust prevention treatment on the surface of the retainer after cleaning;

s7, checking: checking whether the cast retainer is complete or not and whether defects exist or not;

s8, packaging: and packaging the polished holders, and then delivering.

2. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: in step S1, the operation steps of manufacturing the male mold are as follows:

1) firstly, using three-dimensional drawing software to make a graph of a die, carrying out numerical control simulation machining, using a post processor to produce an NC code, and guiding an NC program into a machining center of a numerical control milling machine;

2) selecting a proper material, and placing the material on a numerical control milling machine, wherein the material is selected from one of tungsten carbide and titanium carbide;

3) and after the processing is finished, cleaning liquid is used for cleaning, drying is carried out after cleaning, and then detection is carried out, whether the accuracy is up to the standard or not is carried out, and the accuracy is controlled within 0.01 mm.

3. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: in the step S1, the precision of the gap between the two grinding tools and the thickness error of the holder is controlled within 0.01 mm.

4. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: in step S2, the method further includes:

s201, using SOLIDWORKS software to perform stress analysis on the convex die and the concave die manufactured in the step S1, and analyzing the pressure required by manufacturing the retainer between the two dies;

s202, weighing the male die, and calculating the pressure of the male die by using a formula G ═ mg;

s203, selecting a high-temperature-resistant material to manufacture a balancing weight, calculating the gravity of the seed block by using the pressure required by the retainer manufactured between the two dies, namely the pressure of the male die, which is the pressure of the balancing weight, and using a formula m which is G/G;

and S204, fixedly mounting the balancing weight on the top of the convex module.

5. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: the step S3 further includes the following steps:

s301, firstly, putting metal with a metal melting point bottom into a smelting furnace, firstly, melting, removing impurities at the top of molten metal, and standing for cooling;

s302, when the molten metal with the low melting point is cooled to be solid, removing the metal block, knocking the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s303, putting the metal with high melting point into a smelting furnace, firstly smelting, removing impurities at the top of the molten metal, and standing for cooling;

s304, when the molten metal with the high melting point is cooled to be solid, removing the metal block, beating the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s305, putting the metal with the metal melting point bottom into a smelting furnace for smelting, adding the metal with the high melting point for smelting, cooling and solidifying, and performing continuous annealing treatment after solidification;

s306, melting the annealed metal block into molten metal.

6. The retainer edge-turning-free forming method based on the composite process according to claim 5, wherein the retainer edge-turning-free forming method comprises the following steps: the processing method of the continuous annealing in step S305 includes:

1) heating the metal piece to be higher than a critical point, and keeping for a certain time;

2) then slowly cooling to a critical point, and heating;

3) and continuously passing through an annealing furnace during heating, wherein the annealing furnace has no seal and does not stay in the annealing furnace any more, and then directly collecting.

7. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: the step S5 includes the steps of:

s501, clamping a male grinding tool and a female mould together, and fixing the male grinding tool and the female mould together by using a fixing ring;

s502, pouring the molten metal into a mold, adding the molten metal into a proper position, and stopping introducing;

s503, spraying the mold by using dry ice, rapidly cooling until the temperature is normal, opening the grinding tool, and taking out the retainer;

s504, automatically punching the retainer, automatically pressing the retainer after the automatic punching, and then automatically expanding.

8. The retainer edge-turning-free forming method based on the composite process according to claim 1, wherein the retainer edge-turning-free forming method comprises the following steps: in step S7, the retainer is ground until the surface is smooth.

Technical Field

The invention relates to the technical field of retainer manufacturing, in particular to a retainer edge-turning-free forming method based on a composite process.

Background

Cages, bearing parts which partially enclose all or part of the rolling bodies and move with them, to isolate the rolling bodies and generally also to guide them and retain them in the bearing, the cage acting: when the rolling bearing works, the bearing is heated and abraded due to sliding friction, particularly under the high-temperature running condition, the friction, the abrasion and the heating are aggravated by the action of inertial centrifugal force, and the retainer can be burned or broken seriously, so that the bearing cannot work normally. Therefore, the material of the cage is required to have a certain strength, and also to have good thermal conductivity, a small friction factor, good wear resistance, strong impact toughness, a small density and a coefficient of linear expansion close to that of the rolling element. In addition, the stamped cage is subjected to more complicated stamping deformation, and the material is required to have good processing performance.

The existing retainer is manufactured by using a numerical control machine tool to carry out edge turning, the retainer can be well manufactured when the edge turning is carried out, but the edge turning or punching is carried out when the edge turning technology is used, secondary treatment is not carried out on raw materials used by the retainer, the produced retainer is caused, and the service life is greatly reduced.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, a first object of the present invention is to provide a method for forming a retainer without edge turning based on a composite process, which solves the above-mentioned problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a retainer edge turning-free forming method based on a composite process comprises the following steps:

s1, manufacturing a die: firstly, manufacturing a male die, then manufacturing a female die, putting the male die and the female die together, checking to see whether the male die is matched with the female die and whether a gap between the two dies is the thickness of the retainer;

s2, manufacturing of the balancing weight: measuring the weight of the convex die, adding a balancing weight according to the required weight of the retainer, wherein the sum of the weights and the weight of the convex die is greater than the required force of the retainer;

s3, preparing molten metal required by the retainer: when the metal liquid of the retainer is prepared, firstly, metal with a low melting point is put into a smelting furnace for melting, and then metal with a high melting point is put into the smelting furnace;

s4, manufacturing a stirring rod: using metal with a melting point higher than that of the metal for manufacturing the retainer, and stirring the solution of the alloy to ensure that the metal solution is uniformly stirred;

s5, casting a retainer: clamping a male die and a female die together, adding molten metal into the die from a liquid inlet hole, rapidly cooling the die to normal temperature by using dry ice, opening the die, taking out a retainer, then automatically punching a window on the retainer, automatically pressing the retainer after the automatic punching of the window, and then automatically expanding the retainer;

s6, grinding: polishing the cast retainer by using a polishing tool;

s7, checking: checking whether the cast retainer is complete or not and whether defects exist or not;

s8, packaging: and packaging the polished holders, and then delivering.

By adopting the technical scheme: the retainer can be well produced.

The invention is further configured to: in step S1, the operation steps of manufacturing the male mold are as follows:

1) firstly, using three-dimensional drawing software to make a graph of a die, carrying out numerical control simulation machining, using a post processor to produce an NC code, and guiding an NC program into a machining center of a numerical control milling machine;

2) selecting a proper material, and placing the material on a numerical control milling machine, wherein the material is selected from one of tungsten carbide and titanium carbide;

3) and after the processing is finished, cleaning liquid is used for cleaning, drying is carried out after cleaning, and then detection is carried out, whether the accuracy is up to the standard or not is carried out, and the accuracy is controlled within 0.01 mm.

By adopting the technical scheme: the qualification rate of the produced retainer is greatly improved.

The invention is further configured to: in the step S1, the precision of the gap between the two grinding tools and the thickness error of the holder is controlled within 0.01 mm.

By adopting the technical scheme: and the error is reduced.

The invention is further configured to: in step S2, the method further includes:

s201, using SOLIDWORKS software to perform stress analysis on the convex die and the concave die manufactured in the step S1, and analyzing the pressure required by manufacturing the retainer between the two dies;

s202, weighing the male die, and calculating the pressure of the male die by using a formula G ═ mg;

s203, selecting a high-temperature-resistant material to manufacture a balancing weight, calculating the gravity of the seed block by using the pressure required by the retainer manufactured between the two dies, namely the pressure of the male die, which is the pressure of the balancing weight, and using a formula m which is G/G;

and S204, fixedly mounting the balancing weight on the top of the convex module.

By adopting the technical scheme: the pressure is increased, and poor forming degree of the retainer caused by insufficient pressure during production is prevented.

The invention is further configured to: the step S3 further includes the following steps:

s301, firstly, putting metal with a metal melting point bottom into a smelting furnace, firstly, melting, removing impurities at the top of molten metal, and standing for cooling;

s302, when the molten metal with the low melting point is cooled to be solid, removing the metal block, knocking the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s303, putting the metal with high melting point into a smelting furnace, firstly smelting, removing impurities at the top of the molten metal, and standing for cooling;

s304, when the molten metal with the high melting point is cooled to be solid, removing the metal block, beating the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s305, putting the metal with the metal melting point bottom into a smelting furnace for smelting, adding the metal with the high melting point for smelting, cooling and solidifying, and annealing after solidification;

s306, melting the annealed metal block into molten metal.

By adopting the technical scheme: the purpose of the fire is to transform the super-cooled austenite into martensite or bainite to obtain a martensite or bainite structure, and then to improve the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of the steel greatly by tempering at different temperatures, thereby meeting different use requirements of various mechanical parts and tools and prolonging the service life of the retainer.

The invention is further configured to: the processing method of the continuous annealing in step S305 includes:

1) heating the metal piece to be higher than a critical point, and keeping for a certain time;

2) then slowly cooling to a critical point, and heating;

3) and continuously passing through an annealing furnace during heating, wherein the annealing furnace has no seal and does not stay in the annealing furnace any more, and then directly collecting.

By adopting the technical scheme: the hardness is reduced, and the machinability is improved; the residual stress is eliminated, the size is stabilized, and the deformation and crack tendency is reduced; the crystal grains are refined, the structure is adjusted, and the structure defects are eliminated, so that the service life of the retainer is prolonged.

The invention is further configured to: the step S1 includes the steps of:

s501, clamping a male grinding tool and a female mould together, and fixing the male grinding tool and the female mould together by using a fixing ring;

s502, pouring the molten metal into a mold, adding the molten metal into a proper position, and stopping introducing;

s503, spraying the mold by using dry ice, rapidly cooling until the temperature is normal, opening the grinding tool, and taking out the retainer;

s504, automatically punching the retainer, automatically pressing the retainer after the automatic punching, and then automatically expanding.

By adopting the technical scheme: can be produced quickly and can be formed quickly.

The invention is further configured to: in step S7, the retainer is ground until the surface is smooth.

By adopting the technical scheme: producing the cage meeting the requirements.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

the invention carries out quenching, the metal with the metal melting point bottom is firstly put into a smelting furnace for melting, then the metal with the high melting point is added for melting, then cooling solidification is carried out, and annealing treatment is carried out after solidification, thus reducing the hardness and improving the machinability; the residual stress is eliminated, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure, eliminating the defects of the structure, and quenching: the purpose of quenching is to transform the super-cooled austenite into martensite or bainite to obtain martensite or bainite tissues, and then the martensite or bainite tissues are tempered at different temperatures to greatly improve the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of the steel, so that different use requirements of various mechanical parts and tools are met, the quenching is firstly carried out, the annealing is carried out, and then the heating is carried out to form molten metal, so that the service life of the retainer is prolonged; firstly, a male die is manufactured, then a female die is manufactured, the male die and the female die are placed together, the male die and the female die are checked, whether the male die is matched with the female die is checked, whether a gap between the two dies is the thickness of the retainer is checked, the accuracy of the gap between the two dies and the thickness error of the retainer is controlled within 0.01mm, the precision of the retainer is high when the retainer is produced, the accuracy is improved, the qualification degree of the retainer is improved, the pressure required by the manufacture of the retainer between the two dies is analyzed, a high-temperature-resistant material is selected for manufacturing the balancing weight, the pressure required by the manufacture of the retainer between the two dies-the pressure of the male die is equal to the pressure of the balancing weight, the gravity of the mating block is calculated by using a formula m which is G/G, the balancing weight is fixedly installed on the top of the male die block, the pressure is increased, and the pressure is prevented from being insufficient during production, the shaping degree that causes the holder is not good, use the dry ice to spray the mould, carry out quick cooling, until the normal atmospheric temperature, open the grinding apparatus, take out the holder, can rapid production, can rapid prototyping, adopt the technique of turning the limit not to carry out holder processing, carry out the process complex scheme design to the shaping processingequipment of the holder turning the limit not, it is low to be used for solving the productivity, the personnel operation degree of difficulty is big, the product disability rate is high, the pain point that manufacturing cost is high, and the industrial accident rate that appears in the greatly reduced staff operation process, satisfy the demand of modernized bearing production quality and productivity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

A retainer edge turning-free forming method based on a composite process comprises the following steps:

s1, manufacturing a die: firstly, manufacturing a convex die, then manufacturing a concave die, placing the convex die and the concave die together, checking to see whether the convex die is matched with the concave die, whether a gap between the two dies is the thickness of the retainer, and controlling the accuracy of the thickness error between the gap between the two dies and the retainer within 0.01 mm;

1) firstly, using three-dimensional drawing software to make a graph of a die, carrying out numerical control simulation machining, using a post processor to produce an NC code, and guiding an NC program into a machining center of a numerical control milling machine;

2) selecting a proper material, and placing the material on a numerical control milling machine, wherein the material is selected from one of tungsten carbide and titanium carbide;

3) and after the processing is finished, cleaning liquid is used for cleaning, drying is carried out after cleaning, and then detection is carried out, whether the accuracy is up to the standard or not is carried out, and the accuracy is controlled within 0.01 mm.

S2, manufacturing of the balancing weight: measuring the weight of the convex die, adding a balancing weight according to the required weight of the retainer, wherein the sum of the weights and the weight of the convex die is greater than the required force of the retainer;

s201, using SOLIDWORKS software to perform stress analysis on the convex die and the concave die manufactured in the step S1, and analyzing the pressure required by manufacturing the retainer between the two dies;

s202, weighing the male die, and calculating the pressure of the male die by using a formula G ═ mg;

s203, selecting a high-temperature-resistant material to manufacture a balancing weight, calculating the gravity of the seed block by using the pressure required by the retainer manufactured between the two dies, namely the pressure of the male die, which is the pressure of the balancing weight, and using a formula m which is G/G;

and S204, fixedly mounting the balancing weight on the top of the convex module.

S3, preparing molten metal required by the retainer: when the metal liquid of the retainer is prepared, firstly, metal with a low melting point is put into a smelting furnace for melting, and then metal with a high melting point is put into the smelting furnace;

s301, firstly, putting metal with a metal melting point bottom into a smelting furnace, firstly, melting, removing impurities at the top of molten metal, and standing for cooling;

s302, when the molten metal with the low melting point is cooled to be solid, removing the metal block, knocking the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s303, putting the metal with high melting point into a smelting furnace, firstly smelting, removing impurities at the top of the molten metal, and standing for cooling;

s304, when the molten metal with the high melting point is cooled to be solid, removing the metal block, beating the metal block by using an iron hammer to remove impurities on the surface, and then quenching the metal block;

s305, putting the metal with the metal melting point bottom into a smelting furnace for smelting, adding the metal with the high melting point for smelting, cooling and solidifying, and performing continuous annealing treatment after solidification;

the treatment method of continuous annealing comprises the following steps:

1) heating the metal piece to be higher than a critical point, and keeping for a certain time;

2) then slowly cooling to a critical point, and heating;

3) and continuously passing through an annealing furnace during heating, wherein the annealing furnace has no seal and does not stay in the annealing furnace any more, and then directly collecting.

S306, melting the annealed metal block into molten metal.

S4, manufacturing a stirring rod: using metal with a melting point higher than that of the metal for manufacturing the retainer, and stirring the solution of the alloy to ensure that the metal solution is uniformly stirred;

s5, casting a retainer: clamping a male die and a female die together, adding molten metal into the die from a liquid inlet hole, rapidly cooling the die to normal temperature by using dry ice, opening the die, taking out a retainer, then automatically punching a window on the retainer, automatically pressing the retainer after the automatic punching of the window, and then automatically expanding the retainer;

step S5 includes the following steps:

s501, clamping a male grinding tool and a female mould together, and fixing the male grinding tool and the female mould together by using a fixing ring;

s502, pouring the molten metal into a mold, adding the molten metal into a proper position, and stopping introducing;

s503, spraying the mold by using dry ice, rapidly cooling until the temperature is normal, opening the grinding tool, and taking out the retainer;

s504, automatically punching the retainer, automatically pressing the retainer after the automatic punching, and then automatically expanding.

S6, grinding: polishing the cast retainer by using a polishing tool, wherein the retainer is polished to be smooth in surface;

s7, checking: checking whether the cast retainer is complete or not and whether defects exist or not;

s8, packaging: and packaging the polished holders, and then delivering.

Comparative example 1

The method of this embodiment is substantially the same as the method of the embodiment provided, and the main difference is that: in step S305, annealing is not performed;

comparative example 2

The method of this embodiment is substantially the same as the method of the embodiment provided, and the main difference is that: the sum of the weight of the balancing weight and the pressure of the convex module added in the step S2 is less than the force required by the retainer;

comparative example 3

This example is substantially the same as the method of example 1 provided, with the main differences being: in step S1, the precision is controlled to be out of 0.01 mm;

comparative example 4

This example is substantially the same as the method of example 1 provided, with the main differences being: in step S501, the male mold and the female mold are not fixed together using a fixing ring.

Performance testing

The same amount of the retainer manufactured by the retainer non-edge-turning forming method based on the composite process provided by the example and the comparative examples 1 to 4 is respectively taken, the hardness and the qualification rate of the retainer are detected, the hardness of the retainer is detected by GB/T230.1-2004, the qualification rate is detected by a sampling investigation method, and the obtained data are recorded in the following table:

	hardness of	Percent of pass
			Examples	85	99.9％
Comparative example 1	125	90％
			Comparative example 2	85	75％
Comparative example 3	85	60％
			Comparative example 4	85	65％

As can be seen from the analysis of the relevant data in the tables, the manufacturing method of the invention has the advantages that the rigidity of the retainer is reduced, the qualification rate is increased, the metal with the bottom of the melting point of the metal is firstly put into a smelting furnace to be melted, the impurities on the top of the molten metal are removed, the retainer is placed and cooled, when the molten metal with the low melting point is cooled to be solid, the metal blocks are removed, the metal blocks are knocked by using a hammer to remove the impurities on the surface, then the metal is quenched, the metal with the high melting point is put into the smelting furnace to be melted firstly, the impurities on the top of the molten metal are removed, the retainer is placed and cooled, when the molten metal with the high melting point is cooled to be solid, the metal blocks are removed, the impurities on the surface are knocked by using the hammer to remove the impurities on the surface, then the quenching is carried out, the metal with the bottom of the melting point of the metal is put into the smelting furnace to be melted firstly, then the metal with the high melting point is added to be melted, then cooling and solidifying, and annealing after solidification, so as to reduce the hardness and improve the machinability; the residual stress is eliminated, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure, eliminating the defects of the structure, and quenching: the purpose of quenching is to transform the super-cooled austenite into martensite or bainite to obtain martensite or bainite tissues, and then the martensite or bainite tissues are tempered at different temperatures to greatly improve the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of the steel, so that different use requirements of various mechanical parts and tools are met, the quenching is firstly carried out, the annealing is carried out, and then the heating is carried out to form molten metal, so that the service life of the retainer is prolonged; firstly, manufacturing a male die, then manufacturing a female die, placing the male die and the female die together, checking to see whether the male die is matched with the female die, whether a gap between the two dies is the thickness of the retainer, and controlling the precision of the error between the gap between the two dies and the thickness of the retainer within 0.01mm, so that the precision of the retainer is strong and the precision is increased when the retainer is produced, thereby improving the quality qualification, performing stress analysis on the male die and the female die manufactured in the step S1 by using SOLIDWORKS software, analyzing the pressure required by manufacturing the retainer between the two dies, selecting a high-temperature-resistant material to manufacture a balancing weight, using the pressure required by manufacturing the retainer between the two dies-the pressure of the male die which is the pressure of the balancing weight, and calculating the gravity of the seed preparation block by using a formula m which is G/G, with balancing weight fixed mounting at the top of protruding module, increase pressure, when preventing production, pressure is not enough, the shaping degree that causes the holder is not good, use the dry ice to spray the mould, carry out quick cooling, until the normal atmospheric temperature, open the grinding apparatus, take out the holder, can rapid production, can rapid prototyping, adopt the not limit technique to carry out the holder processing, carry out the design of process recombination scheme to the not limit shaping processingequipment of holder, it is low to be used for solving the productivity, the personnel operation degree of difficulty is big, the product disability rate is high, the pain point that manufacturing cost is high, and the industrial injury accident rate that appears in the greatly reduced staff operation process, satisfy the demand of modernized bearing production quality and productivity.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.