Bearing ring inner diameter measuring instrument and measuring method

Abstract

The invention relates to the technical field of bearing ring measurement, in particular to a bearing ring inner diameter measuring instrument and measuring method.The bearing ring inner diameter measuring instrument comprises an L-shaped base, a moving frame is arranged on the upper end face of the horizontal section of the base in a left-right sliding mode, a rectangular plate is fixedly arranged on the left end face of the moving frame, and a measuring mechanism is arranged between the rectangular plate and the moving frame. According to the invention, laser is emitted by the laser emitter in the laser ranging device and is received by the laser receiver, the distance between the two points is finally obtained, and the required inner diameter value of the measuring point is obtained by adding the distance to two times of the distance from the fixed block to the corresponding ball. The error of a measurement result is reduced through point contact between a ball and the inner wall of the ferrule, then multiple measurement processes of the inner diameter of the ferrule from left to right are completed through an equidistant group in the right moving process of a transverse moving block, and an outer ring rod is matched with locking holes in different positions by rotating a rotating plate and the ferrule, so that the measurement accuracy is improved. Therefore, multi-point inner diameter measurement at different positions of the inner wall of the ferrule is realized.

Description

Technical Field

[0001] The invention relates to the technical field of bearing ring measurement, in particular to a bearing ring inner diameter measuring instrument and a measuring method. Background Art

[0002] Large bearing rings are key components for manufacturing large bearings and are usually used in heavy-load and high-precision mechanical systems. Accurate measurement of the inner diameter of the bearing ring is crucial to ensuring the reliability and service life of the bearing. Accurate inner diameter dimensions of large bearing rings can improve the assembly accuracy of large bearings, ensure operating performance, and extend service life.

[0003] At present, large bearing rings are measured by laser ranging equipment. The laser ranging equipment adopts non-contact measurement method and will not produce any physical contact with the bearing rings to avoid damage or deformation caused by contact. At the same time, the laser ranging equipment can achieve sub-micron level measurement accuracy, high measurement dimensional accuracy, fast measurement speed and simple operation.

[0004] However, the following defects still exist in the inner diameter measurement process of large bearing rings (hereinafter referred to as rings): a single-point measurement method is usually used to measure the inner diameter of the ring. The results produced by this measurement method are accidental and insufficient to reflect the real actual data; secondly, during the inner diameter measurement process, the laser ranging device needs to move along the axis of the ring, but during the actual movement process, the laser ranging device only moves in the specified direction, and the movement process of the laser ranging device is not limited and guided, so the running straightness and measurement verticality of the laser ranging device cannot be guaranteed, which increases the probability of measurement errors and reduces the measurement accuracy. Summary of the invention

[0005] Based on this, it is necessary to provide a bearing ring inner diameter measuring instrument and a measuring method, aiming to solve the above-mentioned problems of the prior art.

[0006] The present application provides a bearing ring inner diameter measuring instrument, comprising: an L-shaped base, a movable frame is slidably arranged on the upper end surface of the horizontal section of the base, a rectangular plate is fixedly arranged on the left end surface of the movable frame, and a measuring mechanism is arranged between the rectangular plate and the movable frame.

[0007] A clamping unit is arranged on the vertical section of the base, and the clamping unit includes a rotating plate. A rotating plate is installed on the vertical section of the base so as to rotate and penetrate the base to the left and right, and the axis of the rotating plate is colinear with the center line of the rectangular plate. A plurality of sliding blocks evenly distributed in the circumferential direction are slidingly arranged on the rotating plate, and an arc-shaped clamping plate is fixedly arranged on the right end face of the sliding block, and the inner arc surfaces of all the clamping plates are facing the center line of the rectangular plate.

[0008] The measuring mechanism includes a transverse block, and transverse blocks are provided on the upper and lower end surfaces of the rectangular plate for sliding left and right. Fixed columns with axes extending from front to rear are fixedly provided on the front and rear end surfaces of the two transverse blocks. An L-shaped plate is provided on the fixed column for sliding back and forth. A spring 1 provided on the fixed column is fixedly provided between the L-shaped plate and the transverse block. A fixed block is fixedly provided between the two L-shaped plates facing each other up and down. Balls for pressing against the inner wall of the ring are movably provided on the opposite back surfaces of the two fixed blocks. Laser ranging equipment is provided on the opposite surfaces of the two fixed blocks. An avoidance groove is provided on the rectangular plate, which runs through the front and back and is used to avoid the ranging laser.

[0009] According to a favorable embodiment, the clamping unit also includes a sliding column, the center of the rotating plate slides left and right and a sliding column with an axis extending left and right is installed through it, a center block is fixedly provided on the left end face of the sliding column, a hinge bar is hingedly provided between the center block and all the sliding blocks, and a spring 2 mounted on the sliding column is fixedly provided between the left end face of the vertical section of the base and the center block.

[0010] According to a preferred embodiment, the clamping unit also includes a reference block, and the inner arc surfaces of the plurality of clamping plates are fixedly provided with reference blocks, and all the reference blocks are circumferentially distributed about the axis of the rotating plate, the reference block is Z-shaped, and the vertical section on the right side of the reference block is close to the ring.

[0011] According to a favorable embodiment, the measuring mechanism also includes a docking plate, the right end face of the rotating plate is rotatably provided with a docking plate whose axis is colinear with the axis of the rotating plate, the sliding column slides through the docking plate, the right end face of the docking plate is fixedly provided with two docking columns distributed up and down and with axes extending from left to right, and the left end face of the rectangular plate is provided with docking grooves corresponding one-to-one with the docking columns.

[0012] According to a favorable embodiment, the measuring mechanism also includes an outer ring rod, and two outer ring rods are installed on the movable frame to slide left and right and are symmetrical up and down and have axes extending left and right. The outer ring rod is located on the side of the clamping plate away from the center of the rotating plate. A plurality of locking holes corresponding to the clamping plates are opened on the rotating plate from left to right, and the outer ring rods pass through the corresponding locking holes.

[0013] According to a favorable embodiment, a clamping block located on the left side of the movable frame is fixedly mounted on the outer ring rod through a connecting strip, the two clamping blocks are symmetrical up and down, the clamping blocks are Z-shaped, and the left vertical section of the clamping block is in close contact with the right end surface of the ring.

[0014] According to a favorable embodiment, side vertical plates are fixedly provided on the opposite back surfaces of the two transverse blocks, which slide left and right and penetrate a horizontal column with an axis extending left and right, a through groove is provided in the right vertical section of the clamping block, the horizontal column penetrates the corresponding through groove and the right end of the horizontal column is divided into a threaded section, a nut located on the right side of the clamping block is threadedly installed on the threaded section of the horizontal column, a matching groove is provided in the left vertical section of the reference block, and the matching grooves are rectangular section one, an arc section with the same diameter as the horizontal column, and rectangular section two from front to back, and a matching block is fixedly provided on the left end face of the horizontal column.

[0015] According to a favorable embodiment, a locking group is commonly provided between the rotating plate and the vertical section of the base, the locking group includes a groove, a plurality of circumferentially distributed hemispherical grooves are provided on the left end face of the rotating plate, a fixing frame is fixedly provided on the left end face of the vertical section of the base, a clamping column is installed on the fixing frame so as to slide left and right and penetrate through the fixing frame, a locking ball is fixedly provided on the right end face of the clamping column, and a spring three mounted on the clamping column is commonly fixedly provided between the locking ball and the fixing frame.

[0016] According to a favorable embodiment, an equidistant group is commonly provided on the two transverse blocks and the movable frame, and the equidistant group includes a pushing rod, and a pushing rod with an axis extending from left to right and movably passing through the movable frame is rotatably provided on the right end face of the transverse block, and a plurality of card slots equidistantly arranged along its length direction are provided on the pushing rod, and a spring telescopic rod with an axis extending from front to rear is fixedly provided on the right end face of the movable frame through a mounting plate, and a card plate is fixedly provided on the telescopic end of the spring telescopic rod, and a pushing plate located on the right side of the card plate is commonly rotatably sleeved on the two pushing rods, and the two pushing rods are connected by a sprocket chain, a volute spring is commonly fixedly provided between the pushing rod and the pushing plate, and a rotating rod is fixedly provided on the right end face of the upper pushing rod.

[0017] In summary, the present invention includes at least one of the following beneficial effects: First, the present invention firstly emits laser through the laser transmitter in the laser ranging device, and the laser receiver receives the laser, and finally obtains the distance between the two points. The distance plus twice the distance from the fixed block to the corresponding ball is the required inner diameter value of the measuring point, and the error of the measurement result is reduced by the point contact between the ball and the inner wall of the ring. Secondly, the equidistant group is used to complete the multiple measurement process of the inner diameter of the ring from left to right during the right movement of the transverse block, and the outer ring rod is matched with the locking holes at different positions by rotating the rotating plate and the ring, so as to realize multi-point inner diameter measurement at different positions of the inner wall of the ring, and the average value is taken after obtaining multiple groups of results, thereby further reducing the error in the measurement process and improving the accuracy of the measurement result.

[0018] 2. The clamping block, the corresponding reference block on the left side and the horizontal column in the present invention are fixed to each other, and the clamping block and the reference block cooperate with each other to clamp and clamp the ring in the left and right directions. At the same time, the outer ring rod, the clamping block, the horizontal column, the vertical section of the base and the movable frame together form a corresponding rectangular frame, thereby improving the stability and horizontality of the measurement process in the subsequent measurement process when the transverse block and the side plate move right along the length direction of the horizontal column to further improve the accuracy of the measurement.

[0019] 3. In the process of the mobile frame moving to the left, the present invention connects with the corresponding docking column through the docking groove on the rectangular plate, so that the mobile frame, the vertical section of the base and the rectangular plate are integrated, ensuring the horizontality of the rectangular plate, and then ensuring the horizontality of the laser ranging equipment driven by the transverse block when moving right, improving the stability of the transverse block moving right during the measurement process, and further improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 The schematic diagram shows the structure of the base after being cut off according to the present invention.

[0022] Figure 2 A partial structural schematic diagram of the present invention is shown.

[0023] Figure 3 A partial cross-sectional view of the present invention is shown.

[0024] Figure 4 Shows Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 Shows Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 A schematic diagram of the three-dimensional structure among the moving frame, the clamping plate and the rectangular plate of the present invention is shown.

[0027] Figure 7 Shows Figure 6 Enlarged view of point C in the middle.

[0028] Figure 8 A schematic diagram of the three-dimensional structure among the push plate, the push rod and the clamping plate of the present invention is shown.

[0029] The above drawings include the following reference numerals: 1, base; 2, mobile frame; 3, rectangular plate; 4, clamping unit; 40, rotating plate; 400, sliding block; 401, clamping plate; 41, sliding column; 410, center block; 411, hinge bar; 412, spring 2; 42, reference block; 5, measuring mechanism; 50, transverse block; 500, fixed column; 501, L-shaped plate; 502, spring 1; 503, fixed block; 504, ball bearing; 505, laser distance measuring device; 506, avoidance groove; 51, docking plate; 51 0. Docking column; 511. Docking groove; 52. Outer ring rod; 520. Locking hole; 53. Tightening block; 54. Side plate; 540. Horizontal column; 541. Through groove; 542. Nut; 543. Matching groove; 544. Matching block; 55. Locking group; 550. Groove; 551. Fixed frame; 552. Card ball; 553. Spring three; 56. Equidistant group; 560. Push rod; 561. Card slot; 562. Spring telescopic rod; 563. Card plate; 564. Push plate; 565. Volute spring; 566. Rotating rod. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, a bearing ring inner diameter measuring instrument comprises: an L-shaped base 1, a movable frame 2 is slidably arranged on the upper end surface of the horizontal section of the base 1, and the movable frame 2 is driven by an external hydraulic cylinder (not shown in the figure) to move left and right, a rectangular plate 3 is fixedly arranged on the left end surface of the movable frame 2, and a measuring mechanism 5 is arranged between the rectangular plate 3 and the movable frame 2.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a clamping unit 4 is provided on the vertical section of the base 1, and the clamping unit 4 includes a rotating plate 40. The rotating plate 40 is installed on the vertical section of the base 1 to rotate and penetrate left and right, and the axis of the rotating plate 40 is colinear with the center line of the rectangular plate 3. A plurality of sliding blocks 400 uniformly distributed in the circumferential direction are slidably provided on the rotating plate 40, and an arc-shaped clamping plate 401 is fixedly provided on the right end face of the sliding block 400, and the inner arc surfaces of all the clamping plates 401 are facing the center line of the rectangular plate 3.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the measuring mechanism 5 includes a transverse block 50, and the upper and lower end surfaces of the rectangular plate 3 are both slidably provided with transverse blocks 50, and the front and rear end surfaces of the two transverse blocks 50 are both fixedly provided with fixed columns 500 with axes extending from front to rear, and an L-shaped plate 501 is slidably sleeved on the fixed column 500, and a spring 502 sleeved on the fixed column 500 is fixedly provided between the L-shaped plate 501 and the transverse block 50, and a fixed block 503 is fixedly provided between the two L-shaped plates 501 facing each other, and the opposite surfaces of the two fixed blocks 503 are movably provided with balls 504 for pressing against the inner wall of the ring, and the opposite surfaces of the two fixed blocks 503 are jointly provided with laser ranging equipment 505, and the rectangular plate 3 is provided with an avoidance groove 506 which runs through the front and back and is used to avoid the ranging laser.

[0034] It should be noted that the laser ranging device 505 includes an existing external laser transmitter, a laser receiver and a signal processing unit, and the laser transmitter and the laser receiver are respectively arranged on the opposite surfaces of the two fixed blocks 503, and the distance between the fixed block 503 and the corresponding ball 504 is a fixed value.

[0035] During operation, the staff uses external equipment (such as lifting equipment) to place the bearing ring that needs to be measured for inner diameter on the right side of the vertical section of the base 1, and makes all the clamping plates 401 located on the outside of the ring. The external hydraulic cylinder drives the mobile frame 2 and the rectangular plate 3 to move left. In this process, the clamping plate 401 in the clamping unit 4 clamps and fixes the ring, and makes the axis of the ring collinear with the center line of the rectangular plate 3 and the axis of the rotating plate 40. Then, the two transverse blocks 50 are moved, and the transverse blocks 50 drive the fixed block 503 and the ball 504 thereon to move into the ring. When the ball 504 contacts the inner wall of the ring, the spring 1 502 is in a compressed state. The elastic force generated by the deformation of spring 1 502 makes the fixed block 503 and the ball 504 close to the inner wall of the ring, and then the transverse block 50 is moved to the right, and the transverse block 50 drives the fixed block 503 to move synchronously. During the movement, the ball 504 is always close to the inner wall of the ring. When moving to a certain measuring point, the laser transmitter in the laser ranging device 505 emits a laser, which is received by the laser receiver, and finally the distance between the two points is obtained. The distance plus twice the distance from the fixed block 503 to the corresponding ball 504 is the required inner diameter value of the measuring point. The transverse block 50 is moved to the right to multiple measuring points, and the above measurement process is repeated to obtain multiple groups of data and then take the average value.

[0036] like Figure 1 , Figure 2 and Figure 3As shown, the clamping unit 4 also includes a sliding column 41, the center of the rotating plate 40 slides left and right and is penetrated by the sliding column 41 with an axis extending left and right, a center block 410 is fixedly provided on the left end face of the sliding column 41, and a hinge bar 411 is hingedly provided between the center block 410 and all the sliding blocks 400, and a spring 412 mounted on the sliding column 41 is fixedly provided between the left end face of the vertical section of the base 1 and the center block 410.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the clamping unit 4 also includes a reference block 42, and the inner arc surfaces of the plurality of clamping plates 401 are fixedly provided with reference blocks 42, and all reference blocks 42 are circumferentially distributed about the axis of the rotating plate 40, the reference block 42 is Z-shaped, and the vertical section on the right side of the reference block 42 is close to the ring.

[0038] During operation, the external hydraulic cylinder works to make the movable frame 2 drive the rectangular plate 3 to move left synchronously. During the left movement, the left end face of the rectangular plate 3 contacts the sliding column 41, and as it continues to move, the sliding column 41 drives the central block 410 to move left synchronously. The spring 2 412 is stretched, and the central block 410 pulls the corresponding sliding block 400 through the hinge bar 411, so that all sliding blocks 400 drive the clamping plates 401 to approach the center position of the rotating plate 40 synchronously, that is, all clamping plates 401 cooperate with each other to clamp and fix the ring externally, so that the axis of the ring is in line with the axis of the rotating plate 40, thereby improving the stability in the subsequent measurement process. Secondly, after the measurement is completed, the external hydraulic cylinder works to make the movable frame 2 move right and reset, and the elastic force generated by the deformation of the spring 2 412 makes the central block 410 drive all the clamping plates 401 to reset, thereby releasing the clamping fixation of the ring.

[0039] When the ferrule is placed manually, the left end face of the ferrule is in close contact with the right side of the reference block 42, which facilitates the subsequent stable clamping of the ferrule and uses the right side of the reference block 42 as the reference starting point for left and right movement measurement, thereby improving the convenience of the measurement process.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the measuring mechanism 5 also includes a docking plate 51, the right end face of the rotating plate 40 is rotatably provided with a docking plate 51 whose axis is colinear with the axis of the rotating plate 40, the sliding column 41 slides through the docking plate 51, and the right end face of the docking plate 51 is fixedly provided with two docking columns 510 distributed up and down and with axes extending from left to right, and the left end face of the rectangular plate 3 is provided with a docking groove 511 corresponding to the docking column 510 one by one.

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the measuring mechanism 5 also includes an outer ring rod 52, and two outer ring rods 52 are installed on the movable frame 2 to slide left and right and are symmetrical up and down and have axes extending left and right. The outer ring rod 52 is located on the side of the clamping plate 401 away from the center of the rotating plate 40, and a plurality of locking holes 520 corresponding to the clamping plate 401 are opened on the rotating plate 40 from left to right, and the outer ring rods 52 pass through the corresponding locking holes 520.

[0042] During the leftward movement of the mobile frame 2, the docking groove 511 on the rectangular plate 3 is docked with the corresponding docking column 510, and the docking column 510 is inserted into the docking groove 511, so that the mobile frame 2, the vertical section of the base 1 and the rectangular plate 3 are made into a whole, ensuring the horizontality of the rectangular plate 3, that is, ensuring the horizontality of the transverse block 50 in the process of driving the laser ranging device 505 to move rightward, improving the stability of the rightward movement of the transverse block 50 during the measurement process, reducing the error during the measurement process, and the mobile frame 2 continues to move left to complete the clamping and fixing process of the ring.

[0043] Afterwards, the outer ring rod 52 is manually moved to the left so that the outer ring rod 52 is stuck in the locking hole 520 at the corresponding position on the rotating plate 40. The rotating plate 40 is fixed by the above operation to avoid affecting the measurement result due to the self-rotation of the rotating plate 40 and the ring during the subsequent measurement process; during the measurement process of changing the position, the outer ring rod 52 is separated from the current locking hole 520, and the rotating plate 40 is rotated to make the rotating plate 40 drive the clamped ring to rotate a specified angle, and the outer ring rod 52 is matched with the corresponding locking hole 520 at this time, and the inner diameter at different positions of the inner wall of the ring is measured at multiple points to obtain multiple groups of results, and then the average value of the results is taken, thereby reducing the error in the measurement process and improving the accuracy of the measurement result.

[0044] like Figure 1 and Figure 6 As shown, a tightening block 53 located on the left side of the movable frame 2 is fixedly sleeved on the outer ring rod 52 through a connecting strip, and the two tightening blocks 53 are symmetrical up and down, and the tightening blocks 53 are Z-shaped, and the left vertical section of the tightening block 53 is in close contact with the right end surface of the ring.

[0045] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, the opposite sides of the two transverse blocks 50 are fixedly provided with side vertical plates 54, which slide left and right and are penetrated by a horizontal column 540 with an axis extending left and right, a through slot 541 is provided in the right vertical section of the clamping block 53, the horizontal column 540 penetrates the corresponding through slot 541 and the right end of the horizontal column 540 is divided into a threaded section, a nut 542 located on the right side of the clamping block 53 is threadedly installed on the threaded section of the horizontal column 540, a matching groove 543 is provided in the left vertical section of the reference block 42, and the matching groove 543 is composed of a rectangular section 1, an arc section with the same diameter as the horizontal column 540, and a rectangular section 2 from front to back, and a matching block 544 is fixedly provided on the left end face of the horizontal column 540.

[0046] In the initial state, the transverse movement block 50 is located at the leftmost position within its left and right movement range. During the process of the rectangular plate 3 moving to the left, the rectangular plate 3 drives the transverse movement block 50 and the side plate 54 to move to the left synchronously, and the side plate 54 and the horizontal column 540 thereon move to the left. The horizontal column 540 is rotated in advance so that the matching block 544 on the horizontal column 540 is in a horizontal state. Therefore, the horizontal column 540 drives the matching block 544 to move to the left through the corresponding matching groove 543, and then reverses the rotation of the matching block 544 so that the matching block 544 rotates to a vertical state, thus completing the installation process of the left side of the horizontal column 540; then the outer ring rod 52 is moved to the left so that the outer ring rod 52 drives the resisting The tightening block 53 moves to the left synchronously, and finally the left end face of the left vertical section of the tightening block 53 presses against the tightening ring, and then the nut 542 is manually tightened, so that the tightening block 53, the corresponding reference block 42 on the left and the horizontal column 540 are fixed to each other, and the tightening block 53 and the reference block 42 cooperate with each other to clamp the left and right ends of the tightening ring. At this time, the outer ring rod 52, the reference block 42, the horizontal column 540, the vertical section of the base 1 and the moving frame 2 together form a corresponding rectangular frame. Therefore, in the subsequent process of the transverse block 50 and the side plate 54 moving right along the length direction of the horizontal column 540 for measurement, the stability and levelness of the measurement process are improved, and the error in the measurement process is reduced.

[0047] like Figure 3 , Figure 5 and Figure 6 As shown, a locking group 55 is commonly provided between the rotating plate 40 and the vertical section of the base 1, and the locking group 55 includes a groove 550. The left end surface of the rotating plate 40 is provided with a plurality of circumferentially distributed and hemispherical grooves 550, and a fixing frame 551 is fixedly provided on the left end surface of the vertical section of the base 1. A tightening column is installed on the fixing frame 551 so as to slide left and right and penetrate therethrough, and a locking ball 552 is fixedly provided on the right end surface of the tightening column, and a spring 553 mounted on the tightening column is commonly fixedly provided between the locking ball 552 and the fixing frame 551.

[0048] In the initial state, the set locking ball 552 is located in the corresponding groove 550 and the spring three 553 is in a compressed state. The elastic force generated by the compression deformation of the spring three 553 makes the locking ball 552 press against the inner wall of the groove 550, so as to preliminarily fix the rotating plate 40, which is convenient for the subsequent placement and clamping operations of the ring; when the measuring inner wall area of ​​the ring needs to be replaced, the nut 542 is manually turned to remove and the outer ring rod 52 is moved to the right, so that the outer ring rod 52 withdraws from the locking hole 520, and the lock of the rotating plate 40 is released. Then, the rotating plate 40 is rotated so that the rotating plate 40 drives the ring to rotate a specified angle, and the other locking hole 520 is opposite to the outer ring rod 52, and then the locking hole 520 is plugged into the outer ring rod 52, and the nut 542 is reinstalled, and then the measurement process of the inner wall area of ​​the ring is carried out.

[0049] During the rotation of the rotating plate 40, the locking ball 552 will move out of the groove 550, and the spring three 553 will continue to be compressed. When the position adjustment of the ring is completed, the locking ball 552 is opposite to the other groove 550, and the elastic force generated by the compression of the spring three 553 causes the locking ball 552 to be re-engaged in the corresponding groove 550, and the rotating plate 40 continues to be preliminarily fixed. Through the above method, it is convenient to determine the rotation angle of the rotating plate 40, guide the docking installation process of the corresponding locking hole 520 and the outer ring rod 52, and assist the fixing and locking process of the rotating plate 40.

[0050] like Figure 1 , Figure 6 and Figure 8 As shown, the two transverse blocks 50 and the mobile frame 2 are jointly provided with an equidistant group 56, the equidistant group 56 includes a push rod 560, the right end face of the transverse block 50 is rotatably provided with a push rod 560 whose axis extends from left to right and movably penetrates the mobile frame 2, the push rod 560 is provided with a plurality of slots 561 arranged equidistantly along its length direction, the right end face of the mobile frame 2 is fixedly provided with a spring telescopic rod 562 whose axis extends from front to back through a mounting plate, the telescopic end of the spring telescopic rod 562 is fixedly provided with a card plate 563, the two push rods 560 are jointly rotatably sleeved with a push plate 564 located on the right side of the card plate 563, the two push rods 560 are connected by a sprocket chain, a volute spring 565 is jointly fixedly provided between the push rod 560 and the push plate 564, and a rotating rod 566 is fixedly provided on the right end face of the upper push rod 560. The push rod 560 can move left and right on the mobile frame 2 and can rotate.

[0051] After the clamping and fixing of the ring and the installation of the pressing block 53 are completed, the pushing plate 564 is manually moved so that the pushing rod 560 drives the two transverse blocks 50 to move right. In the initial state, the spring telescopic rod 562 is in a compressed state, so the elastic force generated by the compression of the spring telescopic rod 562 makes the clamping plate 563 always press against the two pushing rods 560. As the transverse block 50 continues to move, the clamping plate 563 moves to be opposite to the first clamping groove 561 on the right side of the pushing rod 560. The clamping plate 563 is clamped into the clamping groove 561 under the elastic force of the spring telescopic rod 562 to lock the pushing rod 560. At the same time, the first measurement process of the inner diameter of the ring is completed at this time. After that, the rotating rod 56 is manually rotated. 6 drives the upper push rod 560 to rotate synchronously, and the two push rods 560 rotate synchronously together through the sprocket chain transmission, the inner wall of the first slot 561 on the right squeezes the card plate 563, so that the card plate 563 moves backward, and the card plate 563 finally clings to the circumferential surface of the push rod 560, and the spiral spring 565 deforms, and continues to move the push plate 564, so that the second slot 561 on the right gradually moves rightward and is opposite to the card plate 563. When relative, the push rod 560 rotates under the torsional force of the spiral spring 565, and the card plate 563 is clamped into the slot 561 under the elastic force of the spring telescopic rod 562 to lock the push rod 560, and then repeats the above process to complete the second measurement of the inner diameter of the ferrule. Then repeat the above operation process, and the multiple slots 561 on the card plate 563 and the push rod 560 cooperate from right to left in sequence to complete multiple measurements of the inner diameter of the ferrule. Through multiple measurements, the randomness of the measurement results is reduced and the accuracy of the measurement results is improved. After the position of the ferrule is changed, the above measurement process is repeated to obtain another set of data. The accuracy of the measurement result is further improved by obtaining multiple sets of data by measuring at different measurement positions.

[0052] like Figure 1-Figure 8 As shown, in addition, the present invention also provides a method for measuring the inner diameter of a bearing ring, comprising the following steps: S1, placing the ring: clean the bearing ring to ensure that the inner wall surface of the ring is clean and free of oil, dust or other impurities, and then manually use an external device to place the ring on the right side of the vertical section of the base 1, and make all the clamping plates 401 located on the outside of the ring.

[0053] S2. Locking the ferrule: the external hydraulic cylinder drives the movable frame 2 and the rectangular plate 3 to move leftward, squeezing the sliding column 41. The sliding column 41 drives the center block 410 to move leftward synchronously. The center block 410 pulls the corresponding sliding block 400 to move through the hinge bar 411. All the clamping plates 401 cooperate with each other to clamp and fix the ferrule externally, so that the axis of the ferrule is in line with the axis of the rotating plate 40.

[0054] S3, single group measurement: Move the push rod 560 to the right, and the push rod 560 drives the fixed block 503 to move synchronously through the transverse block 50. When moving to a certain measuring point, the laser transmitter in the laser ranging device 505 emits laser, which is received by the laser receiver, and finally the distance between the two points is obtained. The distance plus twice the distance from the fixed block 503 to the corresponding ball 504 is the required inner diameter value of the measuring point. Through the equidistant group 56 and the continuous rightward movement of the push rod 560, the above measurement process is repeated for multiple measuring points in the horizontal direction to obtain a single group of data.

[0055] S4, multiple groups of measurements: by rotating the rotating plate 40, the rotating plate 40 drives the clamped ring to rotate a specified angle, and the outer ring rod 52 cooperates with the locking holes 520 at different positions, so as to achieve multi-point measurement of the inner diameter at different positions of the inner wall of the ring and obtain multiple groups of data.

[0056] S5. Processing data: averaging the data obtained in steps S4 and S3 to obtain the required inner diameter value, and comparing it with the range of specified inner diameter values ​​to determine whether the inner diameter of the ferrule meets the use requirements.

[0057] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing ring inner diameter measuring instrument, characterized in that: include: An L-shaped base, wherein a movable frame is slidably arranged on the upper end surface of the horizontal section of the base, a rectangular plate is fixedly arranged on the left end surface of the movable frame, and a measuring mechanism is arranged between the rectangular plate and the movable frame; A clamping unit is provided on the vertical section of the base, and the clamping unit includes a rotating plate, and a rotating plate is installed on the vertical section of the base to rotate and penetrate the left and right sides, and the axis of the rotating plate is colinear with the center line of the rectangular plate, and a plurality of sliding blocks evenly distributed in the circumferential direction are slidably provided on the rotating plate, and an arc-shaped clamping plate is fixedly provided on the right end surface of the sliding block, and the inner arc surfaces of all the clamping plates face the center line of the rectangular plate; The measuring mechanism includes a transverse block, and transverse blocks are provided on the upper and lower end surfaces of the rectangular plate for sliding left and right. Fixed columns with axes extending from front to rear are fixedly provided on the front and rear end surfaces of the two transverse blocks. An L-shaped plate is provided on the fixed column for sliding back and forth. A spring 1 provided on the fixed column is fixedly provided between the L-shaped plate and the transverse block. A fixed block is fixedly provided between the two L-shaped plates facing each other up and down. Balls for pressing against the inner wall of the ring are movably provided on the opposite back surfaces of the two fixed blocks. Laser ranging equipment is provided on the opposite surfaces of the two fixed blocks. An avoidance groove is provided on the rectangular plate, which runs through the front and back and is used to avoid the ranging laser.

2. The bearing ring inner diameter measuring instrument according to claim 1, characterized in that: The clamping unit also includes a sliding column. The center of the rotating plate slides left and right and is penetrated by a sliding column with an axis extending left and right. A center block is fixedly arranged on the left end face of the sliding column. A hinge bar is hingedly arranged between the center block and all the sliding blocks. A spring 2 mounted on the sliding column is fixedly arranged between the left end face of the vertical section of the base and the center block.

3. The bearing ring inner diameter measuring instrument according to claim 1, characterized in that: The clamping unit also includes a reference block, and the inner arc surfaces of the plurality of clamping plates are fixedly provided with reference blocks, and all the reference blocks are circumferentially distributed about the axis of the rotating plate, the reference block is Z-shaped, and the vertical section on the right side of the reference block is close to the ring.

4. The bearing ring inner diameter measuring instrument according to claim 1, characterized in that: The measuring mechanism also includes a docking plate, the right end face of the rotating plate is rotatably provided with a docking plate whose axis is colinear with the axis of the rotating plate, a sliding column slides through the docking plate, and the right end face of the docking plate is fixedly provided with two docking columns distributed up and down and with axes extending from left to right, and the left end face of the rectangular plate is provided with docking grooves corresponding to the docking columns one by one.

5. The bearing ring inner diameter measuring instrument according to claim 2, characterized in that: The measuring mechanism also includes an outer ring rod. The movable frame slides left and right and is penetrated by two outer ring rods that are symmetrical up and down and whose axes extend left and right. The outer ring rod is located on the side of the clamping plate away from the center of the rotating plate. A plurality of locking holes corresponding to the clamping plates are opened on the rotating plate from left to right, and the outer ring rods penetrate the corresponding locking holes.

6. The bearing ring inner diameter measuring instrument according to claim 5, characterized in that: The outer ring rod is provided with a tightening block located on the left side of the movable frame through a connecting strip fixed sleeve, the two tightening blocks are symmetrical up and down, the tightening blocks are Z-shaped, and the left vertical section of the tightening block is in close contact with the right end surface of the ring.

7. The bearing ring inner diameter measuring instrument according to claim 6, characterized in that: The opposite back surfaces of the two transverse blocks are fixedly provided with side vertical plates, which slide left and right and penetrate a horizontal column with an axis extending left and right, a through groove is provided in the right vertical section of the clamping block, the horizontal column penetrates the corresponding through groove and the right end of the horizontal column is divided into a threaded section, a nut located on the right side of the clamping block is threadedly installed on the threaded section of the horizontal column, a matching groove is provided in the left vertical section of the reference block, and the matching grooves are rectangular section one, an arc section with the same diameter as the horizontal column, and rectangular section two from front to back, and a matching block is fixedly provided on the left end face of the horizontal column.

8. The bearing ring inner diameter measuring instrument according to claim 1, characterized in that: A locking group is commonly provided between the rotating plate and the vertical section of the base, and the locking group includes a groove. A plurality of circumferentially distributed hemispherical grooves are provided on the left end face of the rotating plate. A fixing frame is fixedly provided on the left end face of the vertical section of the base, and a clamping column is installed on the fixing frame so as to slide left and right and penetrate the fixing frame. A locking ball is commonly provided on the right end face of the clamping column, and a spring three mounted on the clamping column is commonly fixedly provided between the locking ball and the fixing frame.

9. The bearing ring inner diameter measuring instrument according to claim 5, characterized in that: The two transverse blocks and the mobile frame are jointly provided with an equidistant group, and the equidistant group includes a pushing rod, and the right end face of the transverse block is rotatably provided with a pushing rod with an axis extending from left to right and movably passing through the moving frame, and the pushing rod is provided with a plurality of card slots arranged equidistantly along its length direction, and the right end face of the moving frame is fixedly provided with a spring telescopic rod with an axis extending from front to rear through a mounting plate, and a card plate is fixedly provided at the telescopic end of the spring telescopic rod, and a pushing plate located on the right side of the card plate is jointly rotatably sleeved on the two pushing rods, and the two pushing rods are connected by a sprocket chain, and a volute spring is jointly fixedly provided between the pushing rod and the pushing plate, and a rotating rod is fixedly provided on the right end face of the upper pushing rod.

10. A method for measuring the inner diameter of a bearing ring, which is accomplished by using the bearing ring inner diameter measuring instrument according to claim 9, characterized in that: The following steps are involved: S1. Place the ring: clean the bearing ring and ensure that the inner wall surface of the ring is clean and free of oil, dust and impurities. Then place the ring on the right side of the vertical section of the base, and make sure that all the clamping plates are located on the outside of the ring; S2, locking the ferrule: the moving frame and the rectangular plate move left, squeezing the sliding column, the sliding column drives the center block to move left synchronously, the center block pulls the corresponding sliding block to move through the hinge bar, and all the clamping plates cooperate with each other to clamp and fix the ferrule externally, so that the axis of the ferrule is in line with the axis of the rotating plate; S3, single group measurement: move the push rod to the right, the push rod drives the fixed block to move synchronously through the lateral block, when it moves to the measuring point, the laser distance measuring device works, and finally the distance between the two points is obtained. The distance plus twice the distance from the fixed block to the corresponding ball is the required inner diameter value of the measuring point. Through the equidistant group and the continuous rightward movement of the push rod, the above measurement process is repeated for multiple measuring points in the horizontal direction to obtain a single group of data; S4, multiple groups of measurements: by rotating the rotating plate, the rotating plate drives the clamped ring to rotate a specified angle, and the outer ring rod is matched with the locking holes at different positions, so as to achieve multi-point measurement of the inner diameter at different positions of the inner wall of the ring, and obtain multiple groups of data; S5. Processing data: averaging the data obtained in steps S4 and S3 to obtain the required inner diameter value, and comparing it with the range of specified inner diameter values ​​to determine whether the inner diameter of the ferrule meets the use requirements.

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