Intelligent numerical control mechanism for high-precision stable grinding

Abstract

The application discloses a kind of high-precision stable grinding intelligent numerical control mechanism, including grinding wheel box, upper grinding wheel, lower grinding wheel, two groups of lever mechanism, two groups of rotating mechanism, two groups of measuring mechanism, correction mechanism and lifting mechanism, two groups of lever mechanism are respectively arranged in the two sides of grinding wheel box, lever mechanism includes contact head, bent rod, rocker, rotating pipe and amplifying rod, the upper end of amplifying rod is movably connected with rotating pipe, rocker is installed in amplifying rod lower end, one end of bent rod is located at the lower end surface of rocker, contact head is fixed in the other end of bent rod, contact head is contacted with grinding wheel, the present application is reasonable in structure, through servo motor and gear, drive sector gear reciprocating rotation, so that rotating pipe reciprocating rotation, when rotating pipe rotates, contact head will move along the surface of grinding wheel, detect the precision of grinding wheel surface, and the precision of grinding wheel surface is measured and corrected by each mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal cutting machine tools, in particular to an intelligent numerical control mechanism for high-precision stable grinding. BACKGROUND

[0002] In the grinding process of the double-end surface grinder, the grinding surface of the grinding wheel is not flat due to the quality of the grinding wheel, the structure of the machine tool, and the dullness of the grinding wheel:

[0003] 1. The grinding surface of the grinding wheel is not flat, that is, the flatness precision of the grinding wheel is reduced, and the perpendicularity precision of grinding is also reduced. The traditional processing method is to determine the manual operation of the operator by visual inspection or experience, to correct the grinding surface of the grinding wheel by correcting the grinding surface tool of the grinding wheel, so as to improve the flatness precision of the grinding surface of the grinding wheel, that is, to improve the perpendicularity precision of grinding.

[0004] 2. The wear of each grinding wheel is not the same, and the wear of each grinding wheel is uncertain. The precise compensation of the numerical control grinder cannot be realized, and sometimes the grinding parts are scrapped after several grinding. The traditional processing method is to manually operate the grinder by the operator to increase or decrease the compensation amount, and then try to grind the part height size to the drawing requirement. The above method has the disadvantages of high skill requirement for the operator, high labor intensity, and poor consistency of the precision of the ground parts. Therefore, it is necessary to innovate to solve these problems.

[0005] In order to solve the above technical problems, the present application solves the problems through the following technical scheme. SUMMARY

[0006] The purpose of the present application is to provide an intelligent numerical control mechanism for high-precision stable grinding, which has the advantages of high precision and stability, and reduces the skill requirement for the operator through automatic control.

[0007] The above technical purpose of the present application is realized by the following technical scheme:

[0008] The utility model provides a high-precision stable grinding intelligent numerical control mechanism, including the grinding wheel box, upper grinding wheel, lower grinding wheel, two groups of lever mechanism, two groups of rotating mechanism, two groups of measuring mechanism, correction mechanism and lifting mechanism, two groups lever mechanism are arranged at two sides of grinding wheel box respectively, the lever mechanism includes contact head, bent pole, rocker, rotating pipe and amplification rod, rotating pipe is fixed in one side of grinding wheel box, amplification rod is located in rotating pipe, the upper end of amplification rod is movably connected with rotating pipe, the lower end of amplification rod is equipped with the groove, the upper end of rocker is installed in the groove of amplification rod lower end, and one end of bent pole is located at the lower end surface of rocker, the lower end of rocker and bent pole are fixed on the upper end surface of rotating seat through fastener, the other end of bent pole is fixed with contact head, and the contact head is in contact with the grinding wheel, one group contact head on lever mechanism is in contact with the upper end surface of lower grinding wheel, and the contact head on another group lever mechanism is in contact with the lower end surface of upper grinding wheel, rotating mechanism is used to drive rotating pipe to rotate to make contact head move on the surface of grinding wheel, measuring mechanism is used to detect the deflection distance of lever mechanism, correction mechanism corrects upper grinding wheel or lower grinding wheel according to the data measured by measuring mechanism, and lifting mechanism is used to adjust the height position of grinding.

[0009] As preferred, the lever mechanism further comprises a bearing pin and a tension spring pin, the bearing pin is embedded in the lower segment of the amplification rod, both ends of the bearing pin are provided with bearings, the two bearings are respectively embedded in the side walls on both sides of the rotating pipe, the tension spring pin is embedded in the upper segment of the amplification rod, a tension spring is sleeved on the tension spring pin, one end of the tension spring is fixed with the tension spring pin, and the other end of the tension spring is fixed with the rotating pipe.

[0010] As preferred, one group of the measuring mechanism is fixed on the left side of the grinding wheel box and is applied to the upper grinding wheel, and the other group of the measuring mechanism is fixed on the right side of the grinding wheel box and is applied to the lower grinding wheel, the measuring mechanism comprises a left limit switch, a right limit switch, a range finder and a sliding block, the sliding block is located at the upper end of the rotating pipe, the upper end of the amplification rod is connected with the lower end surface of the sliding block, the range finder is fixed on one side of the upper segment of the rotating pipe, the range finder is used to detect the sliding distance of the sliding block, the left limit switch and the right limit switch are both fixed in the rotating pipe, and the left limit switch and the right limit switch are respectively located on both sides of the upper segment of the amplification rod.

[0011] As preferred, the correction mechanism comprises a cylindrical slide, a cylindrical slider is arranged in the cylindrical slide, one end of the cylindrical slider is provided with an upper gondola pen and a lower gondola pen, the upper gondola pen and the lower gondola pen are fixed through clamping bolts, the other end of the cylindrical slider is provided with a flat key groove, one end of the cylindrical slide is provided with a square hole, a short flat key is arranged in the square hole, the short flat key is matched with the flat key groove, the short flat key is fixed through a locking screw, one end of the cylindrical slide is provided with a rear cover, the rear cover is connected to the end face of the cylindrical slide through fasteners, a first transmission screw is arranged in the cylindrical slider, one end of the first transmission screw is provided with a gear, the gear is used for driving the first transmission screw to rotate, so that the cylindrical slider drives the two gondola pens to move, and the two gondola pens are used for correcting the grinding surface position of the grinding wheel.

[0012] As preferred, two groups of the rotating mechanism are respectively connected with two groups of lever mechanisms, the rotating mechanism comprises a base, the base is fixedly connected with the side wall of the grinding wheel box, the upper end and the lower end inside the base are both provided with angular contact bearings, a stop washer is arranged on the angular contact bearing at the upper end, a round nut is arranged above the stop washer, a sector gear is connected with the upper end of the round nut, the round nut is fixedly connected with the sector gear through a flat key, and the sector gear is fixed on a rotating pipe, and the sector gear is used for driving the rotating pipe to rotate.

[0013] As preferred, the lifting mechanism comprises a concave drag plate, a convex drag plate, a lifting gear and a second transmission screw, the rotating mechanism is fixedly connected with one side of the concave drag plate, the concave drag plate is slidably connected with the convex drag plate, the convex drag plate is fixedly connected with the side wall of the grinding wheel box, the second transmission screw is fixed on the convex drag plate and is rotatably connected with the convex drag plate, the lifting gear is fixedly connected with the top of the second transmission screw, the lifting gear is used for driving the second transmission screw to rotate, and the concave drag plate is provided with a threaded hole, and the concave drag plate is threadedly connected with the second transmission screw through the threaded hole.

[0014] The beneficial effects of the present application are that: when the servo motor in the external environment drives the sector gear to rotate back and forth through the gear, the sector gear drives the rotating pipe to rotate, after the rotating pipe rotates, the rotating pipe drives the bent rod to rotate, one end of the bent rod drives the contact head to move on the surface of the grinding wheel, the precision of the grinding wheel is detected, when there is a large difference on the surface of the grinding wheel, the bent rod drives the lower end of the rocker to swing, so that the upper end of the rocker drives the lower end of the amplifying rod to swing, when the upper end of the amplifying rod swings, the amplifying rod drives the slider to move, the distance meter detects the displacement of the slider, so as to calculate the difference degree of the surface of the grinding wheel, and then the correction mechanism is used for grinding the surface of the grinding wheel, so that the difference of the surface of the grinding wheel is reduced to the error range. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the embodiment;

[0016] Figure 2 Structure diagram of the lever mechanism for the embodiment;

[0017] Figure 3 Structure diagram of the lever mechanism for the embodiment; Figure 1 Enlarged view of area A in the middle;

[0018] Figure 4 Structure diagram of the lever mechanism for the embodiment; Figure 2 Enlarged view of area B in the middle;

[0019] Figure 5 Structure diagram of the lever mechanism for the embodiment; Figure 2 Enlarged view of area C in the middle;

[0020] Figure 6 Structure diagram of the lever mechanism for the embodiment;

[0021] Figure 7 Structure diagram of the lever mechanism for the embodiment;

[0022] Figure 8 Structure diagram of the lever mechanism for the embodiment;

[0023] Figure 9 Structure diagram of the lever mechanism for the embodiment; Figure 2 Structure diagram of the lever mechanism for the embodiment;

[0024] Reference numerals: 1, grinding wheel box; 11, upper grinding wheel; 12, lower grinding wheel; 2, lever mechanism; 21, contact head; 22, bent lever; 23, rocker; 24, rotating tube; 25, amplifying lever; 26, rotating seat; 27, bearing pin; 28, tension spring pin; 3, lifting mechanism; 31, concave drag plate; 32, convex drag plate; 33, lifting gear; 34, second transmission screw; 4, measuring mechanism; 41, left quick setting switch; 42, right quick setting switch; 43, range finder; 44, sliding block; 5, correction mechanism; 51, cylindrical slide; 52, cylindrical slider; 53, upper gold pen; 54, lower gold pen; 55, short flat key; 56, rear cover; 57, first transmission screw; 58, gear; 6, rotating mechanism; 61, base; 62, angular contact bearing; 63, stop washer; 64, round nut; 65, sector gear. DETAILED DESCRIPTION

[0025] The following description is only a preferred embodiment of the present application, the protection scope is not limited to the embodiment only, any technical solution belonging to the idea of the present application should belong to the protection scope of the present application. Identical parts are indicated by identical reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0026] AsFigures 1 to 9 As shown in the figure, an intelligent numerical control mechanism for high-precision stable grinding includes a grinding wheel box 1, an upper grinding wheel 11, a lower grinding wheel 12, two sets of lever mechanisms 2, two sets of rotating mechanisms 6, two sets of measuring mechanisms 4, a correction mechanism 5, and a lifting mechanism 3. The upper grinding wheel 11 and the lower grinding wheel 12 are both fixed in the grinding wheel box 1, and the two sets of lever mechanisms 2, the two sets of rotating mechanisms 6, and the two sets of measuring mechanisms 4 are respectively used for detection and correction of the upper grinding wheel 11 and the lower grinding wheel 12.

[0027] The two sets of lever mechanisms 2 are respectively arranged on both sides of the grinding wheel box 1, and each lever mechanism 2 includes a contact head 21, a bent lever 22, a rocker 23, a rotating tube 24, and an amplifying lever 25. The rotating tube 24 is fixed on one side of the grinding wheel box 1, a rotating seat 26 is installed in a lower end hole of the rotating tube 24, the right end of the bent lever 22 and the lower end surface of the rocker 23 are connected to the plane of the rotating seat 26 by means of an internal hexagonal screw, and the contact head 21 is fixed to the other end of the bent lever 22. When the rotating tube 24 rotates, it will drive the bent lever 22 to rotate, so that the other end of the bent lever 22 drives the contact head 21 to move. One of the contact heads 21 contacts the lower end surface of the upper grinding wheel 11, and the other contact head 21 contacts the upper end surface of the lower grinding wheel 12.

[0028] Because of the quality of the grinding wheel, the structure of the machine tool, and the dullness of the grinding wheel, the wear of the abrasive particles at different diameters on the actual grinding wheel plane after grinding is not the same. When the contact head 21 moves, it will contact different diameters on the surface of the grinding wheel. According to the wear degree of the grinding wheel at different positions, the contact head 21 at different wear degrees will be at different heights, thereby driving the other end of the bent lever 22 to move up and down. The bent lever 22 will drive the rocker 23 to move up and down. The upper end of the rocker 23 is installed in a lower end slot of the amplifying lever 25, the lower section of the amplifying lever 25 is provided with a hole, a bearing pin 27 is arranged in the hole, bearings are arranged at both ends of the bearing pin 27, a sleeve is arranged between the bearings and the amplifying lever 25, the bearings are installed in the hole of the rotating tube 24, and one end of the bearing pin 27 is fastened by two external hexagonal nuts. The upper section of the amplifying lever 25 is also provided with a hole, a tension spring pin 28 is arranged in the hole, the tension spring pin 28 is arranged in a tension spring hook, and the other hook of the tension spring is also pulled on the rotating tube 24 through the tension spring pin 28. When the rocker 23 moves up and down, the amplifying lever 25 cannot move upward, so the upper end of the rocker 23 drives the amplifying lever 25 to swing back and forth. Due to the action of the tension spring pin 28, the upper end of the amplifying lever 25 will also start to move.

[0029] The two sets of rotating mechanisms 6 are respectively connected with the two sets of lever mechanisms 2, the rotating mechanism 6 comprises a base 61, the base 61 is fixedly connected with the side wall of the grinding wheel box 1, and the upper end and the lower end in the base 61 are respectively provided with an angular contact bearing 62. The angular contact bearing 62 at the upper end is provided with a stop washer 63, the upper side of the stop washer 63 is provided with a round nut 64, the round nut is threadedly connected with a rotating sleeve, the upper end of the round nut 64 is provided with a sector gear 65, and the sector gear 65 is fixedly connected with the rotating sleeve 24 through a flat key. When the external servo motor drives the pinion 58 to start rotating forward and reversely, the pinion 58 drives the sector gear 65 to rotate back and forth, so that the sector gear 65 drives the rotating pipe 24 to rotate. After the rotating pipe 24 rotates, the rotating seat 26 drives the bent rod 22 and the rocker 23 to rotate, so that the other end of the bent rod 22 can move on the surface of the grinding wheel. The computer can control the rotating range of the sector gear 65, so that the contact head (the shape of the contact head is spherical) 21 can be in contact with or separated from the surface of the grinding wheel.

[0030] The two sets of measuring mechanisms 4 are respectively connected with the two sets of lever mechanisms 2, one set of the measuring mechanisms 4 is fixed on the left side of the grinding wheel box 1 and is used for measuring the upper grinding wheel 11, and the other set of the measuring mechanisms 4 is fixed on the right side of the grinding wheel box 1 and is used for measuring the lower grinding wheel 12. The measuring mechanism 4 comprises a left quick setting switch 41 (containing a fiber sensor and a fiber amplifier), a right quick setting switch 42 (containing a fiber sensor and a fiber amplifier), a range finder 43 and a sliding block 44. The left quick setting switch 41 and the right quick setting switch 42 are fixed in the rotating pipe 24, and the left quick setting switch 41 and the right quick setting switch 42 are respectively located on the two sides of the upper end of the amplifying rod 25. The sliding block 44 is located at the upper end of the rotating pipe 24, the upper end of the amplifying rod 25 is connected with the lower end face of the sliding block 44, and the range finder 43 is fixed on one side of the upper end of the rotating pipe 24. When the upper end of the amplifying rod 25 swings, the sliding block 44 is driven to move, and the range finder 43 can measure the displacement distance of the sliding block 44.

[0031] The correcting mechanism 5 comprises a cylindrical slide 51, and a cylindrical slide block 52 is arranged in the cylindrical slide 51. One end of the cylindrical slide block 52 is provided with an upper stylus 53 and a lower stylus 54, and the upper stylus 53 and the lower stylus 54 are fixed through clamping bolts. The upper stylus 53 and the lower stylus 54 are used for correcting the surfaces of the upper grinding wheel 11 and the lower grinding wheel 12. The other end of the cylindrical slide block 52 is provided with a key groove, one end of the cylindrical slide 51 is provided with a square hole, a short key 55 is arranged in the square hole, the short key 55 is matched with the key groove, and the short key 55 is fixed through a locking screw. One end of the cylindrical slide 51 is provided with a rear cover 56, and the rear cover 56 is connected to the end face of the cylindrical slide 51 through a fastener.

[0032] The first transmission screw 57 is arranged in the cylindrical slider 52, and a gear 58 is arranged at one end of the first transmission screw 57. When the upper grinding wheel 11 or the lower grinding wheel 12 is moved to the correction position, the gear 58 is controlled to rotate by an external servo motor, the gear 58 drives the first transmission screw 57 to rotate, so that the cylindrical slider 52 drives the two gold pen to rotate, thereby realizing the correction of the grinding position of the upper grinding wheel 11 and the lower grinding wheel 12.

[0033] The lifting mechanism 3 comprises a concave plate 31, a convex plate 32, a lifting gear 33 and a second transmission screw 34. The rotating mechanism 6 is fixedly connected to one side of the concave plate 31. The concave plate 31 is slidably connected to the convex plate 32. The convex plate 32 is fixedly connected to the side wall of the grinding wheel box 1. The second transmission screw 34 is fixed on the convex plate 32 and is rotatably connected to the convex plate 32. The lifting gear 58 is fixedly connected to the top of the second transmission screw 34. Threaded holes are arranged on the concave plate 31. The concave plate 31 is threadedly connected to the second transmission screw 34 through the threaded holes. The second transmission screw 34 can be driven to rotate by the lifting gear 58. When the second transmission screw 34 rotates, the concave plate 31 is driven to move in the vertical direction.

[0034] I. The principle of flatness detection is introduced by taking the lower grinding wheel 12 as an example.

[0035] The computer control servo motor drives the external pinion gear 58 to rotate in opposite directions. The pinion gear 58 is engaged with the sector gear 65, so that the engaged sector gear 65 rotates in opposite directions. The sector gear 65 drives the rotating pipe 24 to rotate in opposite directions, so that the lever mechanism 2 and the measuring mechanism 4 rotate in opposite directions.

[0036] Because of the quality of the grinding wheel, the structure of the machine tool, the dullness of the grinding wheel and other reasons, the actual grinding wheel plane is not the same after grinding. That is, during the rotation of the rotating mechanism 6 in opposite directions, under the action of the tension of the tension spring on the amplifying rod 25, the bending rod 22 is in contact with the grinding wheel surface through the contact head 21, so that the bending rod 22 swings up and down, that is, the rocker 23 swings left and right. The swing of the rocker 23 drives the amplifying rod 25 to swing in opposite directions, which can improve the detection accuracy. When the amplifying rod 25 swings, the upper end of the amplifying rod 25 swings left and right, and then drives the sliding block 44 to move left and right. When the contact head 21 contacts different positions with different degrees of wear, the sliding block 44 moves different distances. In this way, the computer measures the distance from the right end face of the sliding block 44 according to the different diameters of the contact head 21 on the grinding wheel surface, and obtains different data.

[0037] Afterwards, through data operation processing, the grinding wheel grinding surface flatness is calculated, and then compared with the computer set grinding wheel grinding surface flatness (which can be set arbitrarily according to the grinding accuracy). If the flatness is less than the set flatness, the contact head 21 is made to leave the grinding wheel grinding surface, and then the grinding machine continues to grind the next part. If the flatness is greater than or equal to the set flatness, the contact head 21 is made to leave the grinding wheel grinding surface, and the grinding wheel grinding surface correction process is instructed.

[0038] The working principle of detecting the upper grinding wheel 11 grinding surface flatness is the same, except that the lever mechanism 2, rotating mechanism 6, and measuring device for detecting the upper grinding wheel 11 grinding surface flatness are used. The advantage of intelligently detecting the grinding wheel grinding surface flatness is that the grinding wheel grinding surface flatness is detected during grinding, and according to the flatness, the grinding machine is instructed to continue grinding or correct the grinding wheel grinding surface, so that the verticality accuracy of the ground part is maintained for a long time.

[0039] II. Working principle of correcting the grinding wheel grinding surface

[0040] If the computer determines that the grinding wheel grinding surface needs to be corrected according to the detection of the grinding wheel grinding surface flatness, the computer automatically controls the grinding machine to work as follows: First, move the upper grinding wheel 11 and the lower grinding wheel 12 to the correction position, and if only one grinding wheel needs to be corrected, only it is moved to the correction position. Then, the computer controls the servo motor of the correction mechanism 5 to rotate forward, which drives the shaft head gear to rotate forward, causing the meshing gear 58 to rotate forward, which in turn drives the first transmission screw 57 to rotate, thereby causing the cylindrical slider 52 to move forward, i.e. the stylus to move forward, achieving the correction of the grinding wheel grinding surface. When the servo motor reverses, the stylus can be moved backward, i.e. the stylus can be moved out of the correction position of the grinding wheel grinding surface. This innovation has the advantage of improving the verticality accuracy of the ground part and productivity.

[0041] III. Working principle of maintaining the grinding wheel grinding surface position during adjustment, using the lower grinding wheel 12 as an example.

[0042] Method one: After the lower grinding wheel 12 grinding surface is corrected, the lever mechanism 2 will swing counterclockwise under the action of the tension spring, driving the amplifying rod 25 to swing clockwise by a larger angle. The top of the amplifying rod 25 swings to the right by a larger angle, driving the slider 44 to move to the right. The computer instructs the grinding wheel to move slowly upward, while the distance meter 43 continuously measures the distance from the right end face of the slider 44. The measured value is continuously compared with the stored value in the computer, which is the distance measured by the distance meter 43 from the right end face of the slider 44 during adjustment of the lower grinding wheel 12 grinding surface position. If the values are equal or the measured value is close enough to the stored value, i.e. the accuracy requirement is met, the computer instructs the servo motor to stop rotating, i.e. the lower grinding wheel 12 stops moving upward. At this time, it can be determined that it is the grinding wheel grinding surface position during adjustment. The same principle can be used to determine the upper grinding wheel 11 grinding surface position during adjustment.

[0043] Method two: After the modification of the lower grinding wheel 12, the lever mechanism 2 will swing a small angle counterclockwise under the action of the spring, and drive the amplifying rod 25 to swing a large angle clockwise. The amplifying rod 25D swings to the right by a large angle, and the right limit switch 42 is sensed. After the computer receives the signal of the right limit switch 42, the servo motor rotating the lower grinding wheel 12 is instructed to rotate, and the lower grinding wheel 12 slowly moves upward. In this way, the lever slowly swings clockwise, that is, the amplifying rod 25 swings counterclockwise, and the amplifying rod 25D swings to the left, so that the right limit switch 42 is not sensed. After the computer receives the signal that the right limit switch 42 is not sensed, the servo motor rotating the lower grinding wheel 12 is instructed to stop rotating.

[0044] At this time, the position of the lower grinding wheel 12 is the position during the debugging of the grinding surface of the lower grinding wheel 12. The reasons are as follows: first, if the position of the lower grinding wheel 12 is higher than the position during the debugging of the grinding surface of the lower grinding wheel 12 by a small angle, the lever will swing a small angle clockwise, and the amplifying rod 25 will swing a large angle counterclockwise, and the amplifying rod 25 will swing to the left by a large angle at the same height as the limit switch, so that the left limit switch 41 is sensed. After the computer receives the signal of the left limit switch 41, the servo motor rotating the lower grinding wheel 12 is instructed to rotate, and the lower grinding wheel 12 slowly moves downward. When the left limit switch 41 is not sensed, the computer receives the signal that the left limit switch 41 is not sensed, and the servo motor rotating the lower grinding wheel 12 is instructed to stop rotating. Therefore, only when the position of the lower grinding wheel 12 is the position during the debugging of the grinding surface of the lower grinding wheel 12, the amplifying rod 25 at the same height as the limit switch will not sense the left and right limit switches, that is, the position of the lower grinding wheel 12 during the debugging of the grinding surface.

[0045] Second, if the position of the lower grinding wheel 12 is lower than the position during the debugging of the grinding surface of the lower grinding wheel 12 by a small angle, the lever will swing a small angle counterclockwise, and the amplifying rod 25 will swing a large angle clockwise, and the amplifying rod 25 will swing to the right by a large angle at the same height as the limit switch, so that the right limit switch 42 is sensed. After the computer receives the signal of the right limit switch 42, the servo motor rotating the lower grinding wheel 12 is instructed to rotate, and the lower grinding wheel 12 slowly moves upward. When the right limit switch 42 is not sensed, the computer receives the signal that the right limit switch 42 is not sensed, and the servo motor rotating the lower grinding wheel 12 is instructed to stop rotating. Therefore, only when the position of the lower grinding wheel 12 is the position during the debugging of the grinding surface of the lower grinding wheel 12, the amplifying rod 25 at the same height as the limit switch will not sense the left and right limit switches, that is, the position of the lower grinding wheel 12 during the debugging of the grinding surface.

[0046] Similarly, only when the position of the upper grinding wheel 11 is the position during the debugging of the grinding surface of the upper grinding wheel 11, the amplifying rod 25 at the same height as the limit switch will not sense the left and right limit switches.

[0047] The advantage of the above method is that after the modification of the grinding surface of the grinding wheel, the grinding surface can be automatically adjusted to the position during the debugging, which greatly reduces the labor intensity and skill requirement of the operator and improves the consistency of the height dimension of the ground parts.

[0048] Four, the working principle of automatic adjustment of the grinding height position: first, the computer control the upper grinding wheel moving servo motor rotation, so that the upper grinding wheel moves to the required height position. Then, the computer control servo motor driven shaft head gear rotation, so that the meshing lifting gear 33 rotates. Lifting gear 33 will drive the second transmission screw 34 rotation, thereby driving the concave drag plate 31 up and down, that is, the rotating mechanism 6, lever mechanism 2 and measuring device installed on the concave drag plate 31 together up and down, adapt to the grinding different height parts need upper grinding wheel 11 different position, and can make the contact head 21 contact the upper grinding wheel 11 grinding surface process requirements. In this way, the grinding different height parts debugging productivity is improved.

[0049] The above innovation is that in the grinding process, from the beginning of the new grinding wheel to the end of the grinding wheel wear, the grinding perpendicularity and height accuracy are always intelligent numerical control, not only greatly reducing the labor intensity and skill requirement of the operator, but also maintaining the high perpendicularity and height accuracy stability, and is also conducive to realizing the unmanned grinding.

[0050] The above specific embodiments further illustrate the technical problems solved by the present application, technical solutions and beneficial effects. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent numerical control mechanism for high-precision stable grinding, comprising a grinding wheel box (1), an upper grinding wheel (11), a lower grinding wheel (12), two sets of lever mechanisms (2), two sets of rotating mechanisms (6), two sets of measuring mechanisms (4), a correction mechanism (5), and a lifting mechanism (3), characterized in that, Two groups of the lever mechanism (2) are arranged on two sides of the grinding wheel box (1), the lever mechanism (2) comprises a contact head (21), a bent lever (22), a rocker (23), a rotating tube (24) and an amplification lever (25), the rotating tube (24) is fixed on one side of the grinding wheel box (1), the amplification lever (25) is located in the rotating tube (24), the upper end of the amplification lever (25) is movably connected with the rotating tube (24), the lower end of the amplification lever (25) is provided with a slot, the upper end of the rocker (23) is installed in the slot of the lower end of the amplification lever (25), one end of the bent lever (22) is located on the lower end surface of the rocker (23), the lower end of the rotating tube (24) is provided with a rotating seat (26), the lower end of the rocker (23) and the bent lever (22) are fixed on the upper end surface of the rotating seat (26) through fasteners, the contact head (21) is fixed on the other end of the bent lever (22), the contact head (21) is in contact with the grinding wheel, the contact head (21) on one group of the lever mechanism (2) is in contact with the upper end surface of the lower grinding wheel (12), the contact head (21) on the other group of the lever mechanism (2) is in contact with the lower end surface of the upper grinding wheel (11), the rotating mechanism (6) is used for driving the rotating tube (24) to rotate, so that the contact head (21) moves on the surface of the grinding wheel, the measuring mechanism (4) is used for detecting the deflection distance of the lever mechanism (2), the correction mechanism (5) corrects the upper grinding wheel (11) or the lower grinding wheel (12) according to the data measured by the measuring mechanism (4), and the lifting mechanism (3) is used for adjusting the grinding height position. The lever mechanism (2) further comprises a bearing pin (27) and a tension spring pin (28), the bearing pin (27) is embedded in the lower section of the amplification lever (25), both ends of the bearing pin (27) are provided with bearings, the two bearings are respectively embedded in the side walls on both sides of the rotating tube (24), the tension spring pin (28) is embedded in the upper section of the amplification lever (25), a tension spring is sleeved on the tension spring pin (28), one end of the tension spring is fixed with the tension spring pin (28), and the other end of the tension spring is fixed with the rotating tube (24). One group of the measuring mechanism (4) is fixed on the left side of the grinding wheel box (1) and is applied to the upper grinding wheel (11), and the other group of the measuring mechanism (4) is fixed on the right side of the grinding wheel box (1) and is applied to the lower grinding wheel (12), the measuring mechanism (4) comprises a left limit switch (41), a right limit switch (42), a range finder (43) and a sliding block (44), the sliding block (44) is located on the upper end of the rotating tube (24), and the upper end of the amplification lever (25) is connected with the lower end surface of the sliding block (44), the range finder (43) is fixed on one side of the upper section of the rotating tube (24), the range finder (43) is used for detecting the sliding distance of the sliding block (44), the left limit switch (41) and the right limit switch (42) are both fixed in the rotating tube (24), and the left limit switch (41) and the right limit switch (42) are respectively located on both sides of the upper section of the amplification lever (25). When the upper end of the amplification rod (25) swings, the sliding block (44) is driven to move, and the distance meter (43) detects the displacement of the sliding block (44) to measure the degree of unevenness of the surface of the grinding wheel.

2. The intelligent numerical control mechanism for high-precision stable grinding according to claim 1, characterized in that, The correction mechanism (5) comprises a cylindrical slide (51), a cylindrical slide block (52) is arranged in the cylindrical slide (51), one end of the cylindrical slide block (52) is provided with an upper gold pen (53) and a lower gold pen (54), the upper gold pen (53) and the lower gold pen (54) are fixed by clamping bolts, the other end of the cylindrical slide block (52) is provided with a key groove, one end of the cylindrical slide (51) is provided with a square hole, a short key (55) is arranged in the square hole, the short key (55) is matched with the key groove, the short key (55) is fixed by a locking screw, one end of the cylindrical slide (51) is provided with a rear cover (56), the rear cover (56) is connected to the end face of the cylindrical slide (51) by a fastener, the cylindrical slide block (52) is provided with a first transmission screw (57), one end of the first transmission screw (57) is provided with a gear (58), the gear (58) is used for driving the first transmission screw (57) to rotate, so that the cylindrical slide block (52) drives the two gold pens to move, and the two gold pens are used for correcting the grinding surface position of the grinding wheel.

3. The intelligent numerical control mechanism for high precision stable grinding according to claim 1, characterized in that, Two groups of the rotating mechanism (6) are connected with two groups of the lever mechanism (2) respectively, the rotating mechanism (6) comprises a base (61), the base (61) is fixedly connected with the side wall of the grinding wheel box (1), the upper end and the lower end of the inside of the base (61) are provided with angular contact bearings (62), a stop washer (63) is arranged on the angular contact bearing (62) at the upper end, a round nut (64) is arranged above the stop washer (63), the round nut (64) is threadedly connected with a rotating sleeve, the upper end of the round nut (64) is provided with a sector gear (65), the sector gear (65) is fixedly connected with the rotating sleeve through a key, and the sector gear (65) is used for driving the rotating pipe (24) to rotate.

4. The intelligent numerical control mechanism for high-precision stable grinding according to claim 1, characterized in that, The lifting mechanism (3) comprises a concave drag plate (31), a convex drag plate (32), a lifting gear (33) and a second transmission screw (34), the rotating mechanism (6) is fixedly connected with one side of the concave drag plate (31), the concave drag plate (31) is slidably connected with the convex drag plate (32), the convex drag plate (32) is fixedly connected with the side wall of the grinding wheel box (1), the second transmission screw (34) is fixed on the convex drag plate (32) and is rotatably connected with the convex drag plate (32), the lifting gear (33) is fixedly connected with the top of the second transmission screw (34), the lifting gear (33) is used for driving the second transmission screw (34) to rotate, and the concave drag plate (31) is provided with a threaded hole, and the concave drag plate (31) is threadedly connected with the second transmission screw (34) through the threaded hole.

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