阅读说明：本技术 一种风电大球磨球工艺 (Wind power large ball grinding process ) 是由 魏正东 李薛俊 李笑宇 于 2021-06-07 设计创作，主要内容包括：本发明涉及一种风电大球磨球工艺,包括下述步骤：首先,将风电大球加入专用的硬磨装置内,等待磨球加工；由磨球电机驱动静磨球板开始旋转,开始磨球加工；在磨球加工开始后,由滚珠丝杠带动动磨球板向静磨球板方向移动,以施加给风电钢球压力；硬磨过程一共分为四个阶段,硬磨的时间为2h,2h后硬磨完成；在硬磨结束后,风电大球从静磨球板的出气口送出,完成对风电大球的硬磨加工。本发明的优点在于：通过专用的硬磨装置与四个不同阶段的磨球工艺相结合的方式,在能够保证每次压力稳定的基础上,通过四个阶段不同的加压力度来对风电大球进行磨球处理,对风电大球的磨球效果更好,保证了风电大球的磨球质量。(The invention relates to a wind power large ball grinding process, which comprises the following steps: firstly, adding a wind power large ball into a special hard grinding device to wait for grinding ball processing; the grinding ball motor drives the static grinding ball plate to rotate, and grinding ball processing is started; after the grinding ball processing is started, the ball screw drives the movable grinding ball plate to move towards the static grinding ball plate so as to apply pressure to the wind power steel ball; the hard grinding process is divided into four stages in total, the hard grinding time is 2 hours, and the hard grinding is finished after 2 hours; and after the hard grinding is finished, the wind power large ball is sent out from the air outlet of the static grinding ball plate, and the hard grinding processing of the wind power large ball is finished. The invention has the advantages that: through the mode that dedicated hard grinding device and four different stages's ball process combined together, on can guaranteeing the stable basis of pressure at every turn, come to carry out the ball grinding through the different pressure degree in four stages to wind-powered electricity generation macrospheres and handle, it is better to the ball grinding effect of wind-powered electricity generation macrospheres, guaranteed the ball grinding quality of wind-powered electricity generation macrospheres.)

1. A wind power large ball grinding process is characterized in that: comprises the following steps

S1: firstly, the wind power big ball is added into a special hard grinding device which comprises

The grinding machine comprises a grinding ball rack, wherein a pair of movable grinding ball plates and static grinding ball plates which are matched with each other are arranged on the grinding ball rack, a gap for accommodating a large wind power ball is reserved between the movable grinding ball plates and the static grinding ball plates, one end of each static grinding ball plate is provided with a ball inlet and a ball outlet, and the static grinding ball plates are driven by a grinding ball motor to rotate;

the pressurizing assembly is used for applying pressure to the movable grinding ball plate and comprises a ball screw arranged on the grinding ball rack, the end part of the ball screw is connected with the movable grinding ball plate through a plane bearing, a screw nut matched with the ball screw is arranged on the ball screw, the screw nut is driven by a servo motor to rotate and drives the ball screw to drive the movable grinding ball plate to be close to or far away from the static grinding ball plate;

the control assembly is matched with the pressurizing assembly and comprises a pressure sensor and a touch display screen, the pressure sensor is connected to the ball screw, the controller matched with the touch display screen is further installed in the grinding ball rack, the controller is connected with the servo amplifier, the pressure sensor and the touch display screen, the controller receives an electric signal transmitted by the pressure sensor and converts the electric signal into an analog signal to be displayed on the touch display screen, so that a person can know the specific value of the applied pressure conveniently, and the touch display screen is at least provided with automatic, manual, pressurizing, depressurizing, ascending and descending touch buttons;

sequentially adding wind power large balls into the static grinding ball plate from the air inlet of the static grinding ball plate to wait for grinding ball processing;

s2: the grinding ball motor drives the static grinding ball plate to rotate, and grinding ball processing is started;

s3: after grinding ball processing is started, a servo motor drives a screw nut to rotate, and then a ball screw is driven to drive a movable grinding ball plate to move towards a static grinding ball plate so as to apply pressure to a wind power steel ball, and meanwhile, a pressure sensor detects the applied pressure and feeds the detection result back to a touch display screen for displaying;

s4: the hard grinding process is totally divided into four stages, the hard grinding time is 2h, wherein the first stage is an initial pressure stage, the applied pressure is between 10N and 15N, the time period of grinding balls is between 0 and 30min, the second stage is a medium pressure stage, the applied pressure is between 20N and 25N, the time period of grinding balls is between 30min and 1h, the third stage is a pressure stabilizing stage, the applied pressure is 40N, the time period of grinding balls is between 1h and 1.5h, the fourth stage is a pressure reduction stage, the time period of grinding balls is between 1.5h and 2h, the applied pressure is reduced by 5 to 10N every 5 to 10min from 40N, and the hard grinding is finished after 2 h;

s5: and after the hard grinding is finished, the wind power large ball is sent out from the air outlet of the static grinding ball plate, and the hard grinding processing of the wind power large ball is finished.

2. The wind power large ball grinding process according to claim 1, characterized in that: the ball screw and the movable grinding ball plate are connected specifically as follows: the movable grinding ball plate is internally provided with a cavity for installing a plane bearing, the plane bearing is arranged in the cavity, one side of the movable grinding ball plate, which is close to the ball screw, is also provided with a through hole which is communicated with the cavity and is used for embedding the end part of the ball screw, the end part of the ball screw penetrates through the through hole and then is connected with the end part of the plane bearing, the other end part of the plane bearing is attached to the movable grinding ball plate, and the outer wall of the ball screw, which is positioned at the through hole of the movable grinding ball plate, is also provided with a deep groove ball bearing.

3. The wind power large ball grinding process according to claim 1, characterized in that: in the step S4, the control of the pressure at the four stages of the hard grinding process is divided into manual control and automatic control, and if automatic control is required, an automatic touch button is selected to be pressed on the touch display screen, and the automatic operation is performed according to the setting entered in the controller in advance; if manual control is needed, a manual touch button is selected to be pressed on the touch display screen, corresponding pressurizing, depressurizing, increasing and decreasing touch buttons are selected to be pressed according to different stages, self-setting is carried out, and fine adjustment of pressure and time is carried out according to actual conditions.

Technical Field

The invention relates to the field of wind power large ball processing, in particular to a wind power large ball grinding process.

Background

Because of the green and environment-friendly property, wind power generation is highly emphasized by various countries in the world in recent years, and the situation of the wind power industry is rapidly developed. 3000 ten thousand steel balls special for wind power bearings are required in the wind power market in China, and about 15 hundred million steel balls are required in the international market. Therefore, the steel ball special for wind power generation has wide market prospect.

The steel ball bearing on the wind driven generator generally comprises: yaw bearing, change oar bearing, generator bearing. For example, a horizontal axis wind turbine must yaw to achieve wind alignment, a yaw bearing is an important component in a yaw system, is located at the bottom of a cabin, bears all the mass of a main transmission system of the wind turbine, transmits pneumatic power to a tower, accurately and timely adjusts the windward angle of the wind turbine, when the wind turbine starts to deflect, yaw acceleration generates a large moment, and meanwhile, a yaw gear bears a large gyro force, so that fatigue failure of the bearing is easily caused. According to the working characteristics of the unit bearing, the bearing has the advantages of high reliability, flexible operation, tight prevention of salt fog on the sea, service life of more than 20 years, capability of bearing larger rotating torque during working and easiness in failure in advance as for the unit variable-pitch bearing. Generator bearings operate continuously at high speeds, and therefore require implementation with high precision, low vibration, and low noise.

The wind generating set works in severe environments such as sand blown by the wind, rain, salt fog, moisture and the like in a field high-altitude environment, and meanwhile, the wind generating set is stable in operation, safe, reliable and long in service life (generally requiring 20 years), operates for less than 13 ten thousand hours without failure, has the reliability of 99.9 percent, is installed in a high space of tens of meters, and is extremely inconvenient to hoist and replace, so that the wind generating set has the characteristics of meeting the requirements of steel balls for wind power bearings, (1) high contact fatigue strength, (2) high wear resistance, (3) proper hardness, (5) high elasticity limit, (4) good impact toughness, (6) good dimensional stability, good corrosion resistance and the like.

In the manufacturing process of the steel ball for the wind power bearing, several processes such as cold heading, heat treatment, hard grinding, primary grinding, polishing, strengthening, lapping, cleaning and the like are generally required.

When carrying out the hard grinding process, what traditional hard grinding technology adopted is that two ball grinding boards and pressure device's cooperation come to carry out the hard grinding to wind-powered electricity generation macrosphere, and one of them ball grinding board is the stationary plate, and another ball grinding board is the movable plate, and the movable plate is close to the stationary plate under pressure device's drive to exert certain pressure, thereby realized that wind-powered electricity generation macrosphere carries out the hard grinding. In the above-mentioned process, the pressurizing device is composed of components such as a hydraulic motor, an electromagnetic valve, a piston and an oil seal pipeline, and when the pressurizing device is used for working, because oil is used as a medium to operate in the whole operation process, some problems are inevitably encountered: for example, the pressurizing device can be influenced by factors such as the temperature of the external environment and the like after working in summer and winter, so that the temperature of oil is greatly changed, oil seal aging is easy to form, oil leakage is easy to occur, the normal work is influenced, the equipment maintenance amount is large, time and material are consumed; in addition, when the oil leakage phenomenon occurs, the pressure of the pressurizing device is unstable, so that staff cannot grasp the product quality during pressurizing production, the product quality is unstable, in addition, the volatilization of oil causes pollution to the surrounding environment, the workload of the staff is increased, the production cost is high, the oil leakage phenomenon cannot be avoided, and when oil exists on the ground, the staff is easy to fall down when passing through the ground with the oil, and the like, so that potential safety hazards exist; in addition, in the process of pressurizing by adopting the pressurizing device, the pressurizing force can be maintained only by keeping the hydraulic motor working for a long time, the consumption is also long-term consumption, the labor intensity of workers is high, and the adverse consequences such as interlocking failure and the like are often caused by unstable pressure, clappers and the like.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a wind power large ball grinding process, which can realize stable pressurization, reduce maintenance frequency and reduce environmental pollution.

In order to solve the technical problems, the technical scheme of the invention is as follows: a wind power large ball grinding process is characterized in that: comprises the following steps

S1: firstly, the wind power big ball is added into a special hard grinding device which comprises

The grinding machine comprises a grinding ball rack, wherein a pair of movable grinding ball plates and static grinding ball plates which are matched with each other are arranged on the grinding ball rack, a gap for accommodating a large wind power ball is reserved between the movable grinding ball plates and the static grinding ball plates, one end of each static grinding ball plate is provided with a ball inlet and a ball outlet, and the static grinding ball plates are driven by a grinding ball motor to rotate;

the pressurizing assembly is used for applying pressure to the movable grinding ball plate and comprises a ball screw arranged on the grinding ball rack, the end part of the ball screw is connected with the movable grinding ball plate through a plane bearing, a screw nut matched with the ball screw is arranged on the ball screw, the screw nut is driven by a servo motor to rotate and drives the ball screw to drive the movable grinding ball plate to be close to or far away from the static grinding ball plate;

the control assembly is matched with the pressurizing assembly and comprises a pressure sensor and a touch display screen, the pressure sensor is connected to the ball screw, the controller matched with the touch display screen is further installed in the grinding ball rack, the controller is connected with the servo amplifier, the pressure sensor and the touch display screen, the controller receives an electric signal transmitted by the pressure sensor and converts the electric signal into an analog signal to be displayed on the touch display screen, so that a person can know the specific value of the applied pressure conveniently, and the touch display screen is at least provided with automatic, manual, pressurizing, depressurizing, ascending and descending touch buttons;

sequentially adding wind power large balls into the static grinding ball plate from the air inlet of the static grinding ball plate to wait for grinding ball processing;

s2: the grinding ball motor drives the static grinding ball plate to rotate, and grinding ball processing is started;

s3: after grinding ball processing is started, a servo motor drives a screw nut to rotate, and then a ball screw is driven to drive a movable grinding ball plate to move towards a static grinding ball plate so as to apply pressure to a wind power steel ball, and meanwhile, a pressure sensor detects the applied pressure and feeds the detection result back to a touch display screen for displaying;

s4: the hard grinding process is totally divided into four stages, the hard grinding time is 2h, wherein the first stage is an initial pressure stage, the applied pressure is between 10N and 15N, the time period of grinding balls is between 0 and 30min, the second stage is a medium pressure stage, the applied pressure is between 20N and 25N, the time period of grinding balls is between 30min and 1h, the third stage is a pressure stabilizing stage, the applied pressure is 40N, the time period of grinding balls is between 1h and 1.5h, the fourth stage is a pressure reduction stage, the time period of grinding balls is between 1.5h and 2h, the applied pressure is reduced by 5 to 10N every 5 to 10min from 40N, and the hard grinding is finished after 2 h;

s5: and after the hard grinding is finished, the wind power large ball is sent out from the air outlet of the static grinding ball plate, and the hard grinding processing of the wind power large ball is finished.

Further, the connection between ball screw and the dynamic grinding plate is specifically as follows: the movable grinding ball plate is internally provided with a cavity for installing a plane bearing, the plane bearing is arranged in the cavity, one side of the movable grinding ball plate, which is close to the ball screw, is also provided with a through hole which is communicated with the cavity and is used for embedding the end part of the ball screw, the end part of the ball screw penetrates through the through hole and then is connected with the end part of the plane bearing, the other end part of the plane bearing is attached to the movable grinding ball plate, and the outer wall of the ball screw, which is positioned at the through hole of the movable grinding ball plate, is also provided with a deep groove ball bearing.

Further, in step S4, the pressure control in the four stages of the hard grinding process is divided into manual control and automatic control, and if automatic control is required, an automatic touch button is selected to be pressed on the touch display screen, and the automatic operation is performed according to the setting entered in the controller in advance; if manual control is needed, a manual touch button is selected to be pressed on the touch display screen, corresponding pressurizing, depressurizing, increasing and decreasing touch buttons are selected to be pressed according to different stages, self-setting is carried out, and fine adjustment of pressure and time is carried out according to actual conditions.

The invention has the advantages that: according to the ball grinding process, the wind power large ball is subjected to ball grinding treatment through different pressurizing degrees in four stages on the basis of ensuring the pressure stability at each time by combining the special hard grinding device with the ball grinding processes in four different stages, the ball grinding effect on the wind power large ball is better, various adverse phenomena such as oil leakage, unstable pressure, environmental pollution, falling down of staff and the like caused by oil use are avoided, the problems are fundamentally solved, and the ball grinding quality of the wind power large ball is ensured.

The grinding ball process provided by the invention realizes digital and intelligent operation, realizes timed production, greatly reduces the labor intensity of staff, beautifies the working environment, obviously reduces the production cost, further improves the product quality, realizes the intellectualization and the timing of equipment, obviously reduces the maintenance amount, gains more time for correct production, realizes the normal and ordered circulation among the working procedures, and fills the gap of processing the wind-power large grinding balls in China.

The ball screw and the movable grinding ball plate are connected by adopting the matching of the plane bearing, the ball screw does not need to rotate, and the movable grinding ball plate needs to rotate in the process of grinding balls, so that the movable grinding ball plate can smoothly rotate, and meanwhile, the ball screw can be used for pressurizing.

The design of the touch display screen is convenient and intuitive to know the applied pressure condition, and provides a basis for subsequent manual adjustment or automatic control.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a specialized hard milling apparatus of the present invention.

FIG. 2 is a schematic view showing the connection between the ball screw and the dynamic grinding plate according to the present invention.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.

The wind power large ball grinding process is realized by the following steps:

s1: firstly, the wind power big ball 4 is added into a special hard grinding device,

as can be seen from the schematic views shown in FIGS. 1-2, the hard grinding apparatus includes

The grinding ball machine frame 1 is provided with a pair of movable grinding ball plates 2 and static grinding ball plates 3 which are matched with each other, a gap filled with wind power large balls 4 is reserved between the movable grinding ball plates 2 and the static grinding ball plates 3, one end of each static grinding ball plate 3 is provided with a ball inlet and a ball outlet, and the static grinding ball plates 3 are driven by a grinding ball motor to rotate.

A pair of pressure components that move grinding plate 1 and exert pressure, pressure components include one and install ball 5 in grinding frame 1, and ball 5's tip passes through plane bearing 6 and links to each other with moving grinding plate 2, and ball 5 specifically does with moving being connected between the grinding plate 2: as can be seen from the schematic diagram shown in fig. 2, a cavity for installing the flat bearing 6 is formed in the movable grinding plate 2, the flat bearing 6 is disposed in the cavity, a through hole for inserting the end of the ball screw 5 communicated with the cavity is further formed in one side of the movable grinding plate 2 close to the ball screw 5, the end of the ball screw 5 is connected to the end of the flat bearing 6 after passing through the through hole, the other end of the flat bearing 6 is attached to the inner wall of the movable grinding plate 2, and a deep groove ball bearing 7 is further disposed on the outer wall of the ball screw 5 at the through hole of the movable grinding plate 2. To ball 5 and move being connected between the ball board 2, adopt the cooperation of plane bearing 6, then because ball 5 does not need the pivoted, and move ball board 2 and need pivoted at the in-process of ball grinding, thereby guaranteed to move the rotation that ball board 2 can be smooth, can utilize ball 5 to pressurize simultaneously again, the phenomenon of following the commentaries on classics appears in ball 5, and deep groove ball bearing 7's design, also be in order to ensure to move the smooth rotation of ball board 2, avoid moving the dead phenomenon of card appearing between ball board 2 and the ball 5.

Install screw nut 8 with it cooperation use on ball 5, screw nut 8 all install on ball frame 1 through a lead screw seat, and screw nut 8 is rotated by the servo motor drive to drive ball 5 drive and move ball board 2 and be close to or keep away from quiet ball board 3, still be equipped with servo amplifier on servo motor.

And the control component is matched with the pressurizing component and comprises a pressure sensor connected to the ball screw 5.

The control component also comprises a touch display screen arranged at the side end of the grinding ball rack 1, a controller matched with the touch display screen is also arranged in the grinding ball rack 1, the controller can be a PLC or a microcomputer, is connected with the servo amplifier, the pressure sensor and the touch display screen, receives the electric signal transmitted by the pressure sensor, and converts the electrical signal into an analog signal to be displayed on the touch display screen, so that a person can conveniently know the specific value of the applied pressure, the touch display screen is also provided with at least automatic, manual, pressurizing, depressurizing, increasing, decreasing touch buttons and the like, the pressure value is conveniently operated by staff, the operation signal is fed back to the controller, the controller sends the signal to the servo amplifier, and the servo amplifier controls the servo motor to work, so that the pressure is changed. The design of the touch display screen is convenient and intuitive to know the applied pressure condition, and provides a basis for subsequent manual adjustment or automatic control.

And sequentially adding wind power large balls into the static grinding ball plate 3 from the air inlet of the static grinding ball plate 3 to wait for grinding ball processing.

S2: the static grinding ball plate 3 is driven by the grinding ball motor to rotate, and grinding ball processing is started.

S3: after grinding ball processing begins, the screw nut is driven to rotate by the servo motor, and then the ball screw is driven to drive the movable grinding ball plate to move towards the direction of the static grinding ball plate so as to apply pressure to the wind power steel ball, meanwhile, the pressure sensor detects the applied pressure, and the detected result is fed back to the touch display screen to be displayed.

S4: the hard grinding process is totally divided into four stages, the hard grinding time is 2h, wherein the first stage is an initial pressure stage, the applied pressure is between 10N and 15N, the time period of grinding balls is 0 to 30min, the second stage is a medium pressure stage, the applied pressure is between 20N and 25N, the time period of grinding balls is 30min to 1h, the third stage is a pressure stabilizing stage, the applied pressure is 40N, the time period of grinding balls is 1h to 1.5h, the fourth stage is a pressure reduction stage, the time period of grinding balls is 1.5h to 2h, the applied pressure is reduced by 5 to 10N every 5 to 10min from 40N, and the hard grinding is completed after 2 h.

The control of the pressure of the four stages of the hard grinding processing is divided into manual control and automatic control, if the automatic control is needed, an automatic touch button is selected on a touch display screen to be pressed down, and the automatic operation is carried out according to the setting which is input into a controller in advance; if manual control is needed, a manual touch button is selected to be pressed on the touch display screen, corresponding pressurizing, depressurizing, increasing and decreasing touch buttons are selected to be pressed according to different stages, self-setting is carried out, and fine adjustment of pressure and time is carried out according to actual conditions.

S5: and after the hard grinding is finished, the wind power large ball is sent out from the air outlet of the static grinding ball plate, and the hard grinding processing of the wind power large ball is finished.

According to the ball grinding process, the wind power large ball is subjected to ball grinding treatment through different pressurizing degrees in four stages on the basis of ensuring the pressure stability at each time by combining the special hard grinding device with the ball grinding processes in four different stages, the ball grinding effect on the wind power large ball is better, various adverse phenomena such as oil leakage, unstable pressure, environmental pollution, falling down of staff and the like caused by oil use are avoided, the problems are fundamentally solved, and the ball grinding quality of the wind power large ball is ensured.

The grinding ball process provided by the invention realizes digital and intelligent operation, realizes timed production, greatly reduces the labor intensity of staff, beautifies the working environment, obviously reduces the production cost, further improves the product quality, realizes the intellectualization and the timing of equipment, obviously reduces the maintenance amount, gains more time for correct production, realizes the normal and ordered circulation among the working procedures, and fills the gap of processing the wind-power large grinding balls in China.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.