CN113340184B

CN113340184B - Inner ring planeness measuring instrument

Info

Publication number: CN113340184B
Application number: CN202110615895.XA
Authority: CN
Inventors: 张华�; 付华
Original assignee: Shanghai Sheshan Precision Bearing Co ltd
Current assignee: Shanghai Sheshan Precision Bearing Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-03-11
Anticipated expiration: 2041-06-02
Also published as: CN113340184A

Abstract

The utility model relates to an inner race flatness measuring apparatu, relate to the field that the bearing ring detected, the on-line screen storage device comprises a base, the locating plate, a column, the measuring rack, measuring instrument, the lever frame, first spring and pivot, the stand is kept away from to the base tip rotates and is connected with the support column, the removable three-jaw chuck that is used for fixed inner race that is fixed with of tip that is used for the base is kept away from to the support column, the fixed cover of periphery wall of support column is equipped with the ring, and the edge of ring has seted up a plurality of fixed slots, the base slides and is provided with the fixed block with fixed slot joint adaptation, be provided with the actuating mechanism who is used for ordering about the fixed block and slides between measuring rack and the base. The bearing ring has the effect of facilitating the positioning of the uneven area of the inner ring, can assist production personnel to trim the inner ring, and is favorable for improving the quality of a finished bearing.

Description

Inner ring planeness measuring instrument

Technical Field

The application relates to the field of bearing ring detection, in particular to an inner ring flatness measuring instrument.

Background

The flatness of the high-precision bearing ring directly influences the groove swing and the vertical difference of the sleeve diagram, so that the rotation precision and the performance of the whole set of bearing are influenced. The existing flatness measurement mode in the industry at present usually uses color to grind a measured plane of an inner ring and a reference plane, and judges whether the flatness meets the requirement or not according to the percentage of the colored area of the measured plane after coloring.

The prior Chinese patent with the patent application number of CN201210087729.8 provides an inner ring flatness measuring instrument, which comprises a base, a positioning plate arranged on the base, an upright post arranged on the positioning plate and a measuring frame arranged on the upright post, wherein the positioning plate can move back and forth along the base, the measuring frame comprises a through hole, and a measuring instrument is arranged in the through hole; the measuring frame is also connected with a lever frame, the measuring frame is movably connected with the lever frame, and the measuring frame and the lever frame are tensioned through a spring; the lever frame is also provided with a contact block which is positioned below the through hole and is contacted with a measuring head of the measuring instrument; the tail end of the lever frame is provided with a measuring head; a support column is fixed at one end of the base, which is far away from the upright column, an end face cushion support is installed on the support column, an inner diameter support is also installed on the upright column, and the inner diameter support is positioned above the end face cushion support; the outer edge of the inner diameter bearing is provided with an alloy ball pressed by a spring; a gland is also arranged above the inner diameter support.

The related art described above has the following disadvantages: when measuring the plane degree of interior lasso, it is rotatory to press the interior lasso with the hand, when the lever frame takes place to rotate, because the deviation size of roughness is generally less, and measurement personnel hardly experience the rotation of lever frame, leads to measurement personnel to be difficult to fix a position the region of interior lasso unevenness.

Disclosure of Invention

In order to solve the problem that the region with the inner ring not flat is not easy to position, the application provides an inner ring flatness measuring instrument.

The application provides an inner race flatness measuring apparatu adopts following technical scheme:

the utility model provides an inner race flatness measuring apparatu, includes base, locating plate, stand, measuring rack, measuring instrument, lever frame, first spring and pivot, the base is kept away from the tip of stand rotates and is connected with the support column, the support column is kept away from the removable three-jaw chuck that is used for fixed inner race that is fixed with of tip of base, the fixed cover of periphery wall of support column is equipped with the ring, just a plurality of fixed slots have been seted up to the edge of ring, the base slide be provided with the fixed block of fixed slot joint adaptation, measure the rack with be provided with between the base and be used for ordering about the actuating mechanism that the fixed block slided.

Through adopting above-mentioned technical scheme, when carrying out the flatness measurement to the inner race, earlier be fixed in the support column with the inner race with three-jaw chuck, if the probe of lever frame contacts the unevenness department of inner race, the lever frame is around the swing of rotating shaft, actuating mechanism drives the fixed block simultaneously and slides in the base, get into fixed slot and butt in the inner wall of fixed slot until the fixed block, can restrict the rotation of support column and inner race, and the inner race is regional for the unevenness with the probe contact department of lever frame, with this realization be convenient for fix a position the regional effect of inner race unevenness, can assist producers to repair the inner race, be favorable to promoting the quality of finished product bearing.

Optionally, a sliding block is fixed on the side wall of the fixed block, a sliding groove matched with the sliding block in a sliding manner is formed in the base, a guide rod is fixed in the sliding groove of the base, and the sliding block is sleeved on the guide rod.

Through adopting above-mentioned technical scheme, the slider slides along the length direction of spout, is favorable to injecing the direction of motion of fixed block, and makes the fixed block slide steadily with the base on, can restrict the rotation of support column steadily.

Optionally, the driving mechanism includes an inductor fixed on the base, a controller fixed on the base, an electromagnet fixed on the base, and an elastic member for driving the fixing block into the fixing groove, the inductor is used for inducing the rotation of the lever frame, the controller is electrically connected with the inductor and the electromagnet respectively, and the electromagnet and the fixing block are magnetically attracted.

Through adopting above-mentioned technical scheme, when carrying out the plane degree measurement to the inner race, the lever frame is when the horizontality, the electro-magnet passes through magnetic force attraction fixed block, simultaneously the elastic component is in tensile or compression state, if the gauge head of lever frame contacts the unevenness department of inner race, the lever frame revolutes the axle swing, the inductor detects the pivot and rotates the back and with signal of telecommunication to controller, the outage of controller control electro-magnet simultaneously, the elastic component begins to contract back or kick-backs and orders about the fixed block through elastic force and remove towards the fixed slot, until the fixed block gets into in the fixed slot and the butt in the inner wall of fixed slot, can restrict the rotation of support column and inner race, because the electric signal propagation speed is fast, be favorable to promoting the regional positioning accuracy of the unevenness of inner race, and need not the manual work and order about the restoration of fixed block.

Optionally, the elastic element includes a second spring sleeved on the guide rod, one end of the second spring is connected to the side wall of the sliding block, and the other end of the second spring is connected to the inner wall of the sliding groove.

By adopting the technical scheme, when the flatness of the inner ferrule is measured and the lever frame is in a horizontal state, the electromagnet attracts the fixed block through magnetic force, meanwhile, the second spring is in a stretching or compressing state, if the measuring head of the lever frame contacts the uneven part of the inner ring, the lever frame swings around the rotating shaft, the sensor detects that the rotating shaft rotates and transmits an electric signal to the controller, meanwhile, the controller controls the electromagnet to be powered off, the second spring begins to retract or rebound and drives the fixing block to move towards the fixing groove through elastic force until the fixing block enters the fixing groove and abuts against the inner wall of the fixing groove, can restrict the rotation of support column and inner race because the electric signal propagation speed is fast for fixed block and fixed slot quick joint are favorable to promoting the regional positioning accuracy of the unevenness of inner race, and need not the manual work and order about the restoration of fixed block.

Optionally, the number of the second springs is two, and the two second springs are respectively sleeved at two ends of the guide rod.

Through adopting above-mentioned technical scheme, two second springs can apply higher drive power to the slider, order about the fixed block and get into the fixed slot fast in, and elastic force is applyed simultaneously to two second springs, is favorable to the fixed block to be inseparable with fixed slot inner wall joint, further promotes the positioning accuracy in the unevenness region of inner race ring.

Optionally, actuating mechanism locates including fixed cover the elliptical plate of pivot tip, slide set up in transmission piece on the measuring rack with articulate in articulated rod on the transmission piece, the transmission piece with the periphery wall butt of elliptical plate, the articulated rod is kept away from the tip of transmission piece articulate in the fixed block.

Through adopting above-mentioned technical scheme, when carrying out the plane degree measurement to the inner race, if the lever frame is in the horizontality condition, the transmission piece butt is in the tip of elliptical plate along the minor axis, if the lever frame begins when rotating, the elliptical plate follows the synchronous rotation of lever frame, the periphery wall extrusion transmission piece of elliptical plate promotes the transmission piece and removes towards the support column, the both ends of hinge bar take place to rotate simultaneously and promote the fixed block and slide towards the fixed slot, until the fixed block butt in the diapire of fixed slot, can restrict the rotation of support column and inner race, above-mentioned control structure is simple, the cost is lower. Simultaneously, the distance between the fixing block and the fixing groove is adjusted, and then the rotating angle of the hinge rod is controlled when the supporting column cannot rotate, so that the areas with different planeness can be positioned, and the application range of the inner ring planeness measuring instrument is favorably expanded.

Optionally, the transmission block is fixed with the guide block, the measuring frame is provided with a guide groove matched with the guide block in a sliding manner.

Through adopting above-mentioned technical scheme, the guide block slides along the length direction of guide way for the transmission piece slides in measuring rack steadily, and then drives the fixed block steadily and makes the fixed block get into the fixed slot fast and accurately, further promotes the regional positioning accuracy of unevenness to the inner race.

Optionally, a limiting component used for guiding the transmission block to move in a single direction is arranged between the transmission block and the measuring frame, the limiting component comprises a limiting rod penetrating through the transmission block and an inclined rack connected to the measuring frame, and the end of the limiting rod abuts against the tooth surface of the inclined rack.

Through adopting above-mentioned technical scheme, if the lever frame begins when rotating, the elliptical plate follows the lever frame and rotates in step, the periphery wall extrusion transmission piece of elliptical plate promotes the transmission piece and removes towards the support column, and the gag lever post goes up and down along the flank of tooth of helical rack and removes along the length direction of helical rack, and the helical rack makes the gag lever post only can remove towards the support column, the both ends of hinge bar take place to rotate simultaneously and promote the fixed block and slide towards the fixed slot, until the fixed block butt in the diapire of fixed slot, can restrict the rotation of support column and inner race. The oblique rack can limit the limiting rod and the transmission block to move towards the direction far away from the supporting column, the risk that the fixing block slides out of the fixing groove freely is reduced, the rotation of the supporting column and the inner ring can be limited stably, and the positioning accuracy of the uneven area of the inner ring is further improved.

Optionally, the measuring rack is fixedly provided with a placing plate, and the placing plate is detachably connected with the helical rack.

By adopting the technical scheme, when the areas with different flatness are required to be positioned, the placing plate and the helical rack can be detached, and the helical rack with different tooth spaces can be replaced, so that the application range of the inner ring flatness measuring instrument is favorably widened.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotation of the lever frame is monitored through the inductor, the magnetism of the electromagnet is controlled through the controller, the second spring drives the fixing block to enter the fixing groove, the rotation of the inner ring is limited, and the contact position of the inner ring and a measuring head of the lever frame is an uneven area, so that the effect of conveniently positioning the uneven area of the inner ring is achieved, and the positioning precision is high;

2. through the synchronous rotation of the lever frame and the elliptical plate, the elliptical plate extrudes the transmission block and the transmission block moves towards the support column, and meanwhile, the two ends of the hinge rod rotate and push the fixing block to enter the fixing groove, so that the rotation of the support column and the inner ring can be limited, and the application range of the inner ring flatness measuring instrument can be favorably expanded;

3. the limiting rod and the helical rack enable the transmission block and the fixing block to move only in a single direction, the risk that the fixing block slides out of the fixing groove freely is reduced, the rotation of the supporting column and the inner ring is limited stably, and the positioning accuracy of the uneven area of the inner ring is further improved.

Drawings

FIG. 1 is a schematic overall structure diagram of a first embodiment of the present application;

FIG. 2 is a schematic partial sectional view of a first embodiment of the present application;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic overall structure diagram of a second embodiment of the present application;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

FIG. 6 is a schematic diagram of an exploded structure of the second embodiment of the present application;

FIG. 7 is an enlarged schematic view of portion C of FIG. 6;

fig. 8 is a partial sectional structural schematic view of a second rack and a resting plate according to an embodiment of the present application.

Reference numerals: 1. a base; 11. positioning a plate; 12. a column; 13. a measuring frame; 131. a measuring instrument; 132. a lever frame; 133. a first spring; 134. a rotating shaft; 135. a guide groove; 14. a fixed block; 141. a movable portion; 1411. a slider; 1412. a connecting plate; 14121. a second ear panel; 142. a fixed part; 15. a chute; 151. a guide bar; 2. a support pillar; 21. a three-jaw chuck; 211. an arc-shaped plate; 22. a circular ring; 221. fixing grooves; 3. a drive mechanism; 31. an inductor; 32. a controller; 33. an electromagnet; 34. a second spring; 35. an elliptical plate; 36. a transmission block; 361. a guide block; 362. a first ear plate; 37. a hinged lever; 4. a limiting component; 41. a limiting rod; 42. a helical rack; 421. a clamping groove; 5. a shelf board; 51. a groove; 52. a movable groove; 521. a third spring; 53. a drive aperture; 6. a movable block; 61. the block is driven.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example one

The embodiment of the application discloses an inner ring flatness measuring instrument. Referring to fig. 1, the inner ferrule flatness measuring instrument includes a base 1, a positioning plate 11, a vertical column 12 fixed on the positioning plate 11, a measuring frame 13 fixed at an end of the vertical column 12, a measuring instrument 131 inserted in the measuring frame 13, a lever frame 132 rotatably connected to the measuring frame 13, a first spring 133, and a rotating shaft 134 fixed to the lever frame 132, wherein the positioning plate 11 can slide on the base 1 and is fixed to the base 1 through a bolt, the lever frame 132 is rotatably connected to the measuring frame 13 around an axis of the rotating shaft 134, one end of the first spring 133 is connected to the measuring frame 13, and the other end of the first spring 133 is connected to the lever frame 132.

Referring to fig. 2 and 3, the end of the base 1 far from the column 12 is rotatably connected with a support column 2, the axial direction of the support column 2 is vertical, and the support column 2 rotates around its central axis. The support column 2 is far away from the removable three-jaw chuck 21 that is used for fixing the inner race that is fixed with of tip of base 1, and three-jaw chuck 21 passes through the bolt fastening with support column 2, and the periphery wall of three-jaw chuck 21 is fixed with a plurality of arcs 211 that are used for steadily placing the inner race. The fixed cover of periphery wall of support column 2 is equipped with ring 22, and a plurality of fixed slots 221 have been seted up to the edge of ring 22, and a plurality of fixed slots 221 are equally arranged along ring 22's circumference. The base 1 is provided with a fixing block 14 in sliding fit with the fixing groove 221, the fixing block 14 comprises a fixing portion 142 and a movable portion 141, and the fixing portion 142 is in sliding fit with the fixing groove 221. The lateral wall that the movable part 141 of fixed block 14 is close to base 1 is fixed with slider 1411, base 1 sets up the spout 15 with the adaptation that slides 1411 along the horizontal direction, spout 15 sets up along the equal closure in length direction's both ends, and base 1 is fixed with guide bar 151 in spout 15, slider 1411 overlaps on the guide bar 151 is located to this slider 1411 slides along the length direction of spout 15 steadily, and then makes fixed block 14 slide on base 1 steadily. A driving mechanism 3 for driving the fixed block 14 to slide is arranged between the measuring frame 13 and the base 1.

When the flatness of the inner ring is measured, the inner ring is fixed on the supporting column 2 by the three-jaw chuck 21, the measuring head at the front end of the lever frame 132 is in contact with the lower surface of the inner ring, the supporting column 2 is driven to rotate during measurement, if the measuring head of the lever frame 132 is in contact with the uneven part of the inner ring, the lever frame 132 swings around the rotating shaft 134, meanwhile, the driving mechanism 3 drives the sliding block 1411 to slide along the length direction of the sliding groove 15, further, the fixing block 14 is stably slid on the base 1 until the fixing part 142 enters the fixing groove 221 and abuts against the inner wall of the fixing groove 221, the rotation of the supporting column 2 and the inner ring can be limited, the measuring head contact part of the inner ring and the lever frame 132 is the uneven area, the effect of conveniently positioning the uneven area of the inner ring is achieved, the inner ring can be assisted to be repaired by a manufacturer, and the quality of a finished bearing is improved.

Referring to fig. 2 and 3, the driving mechanism 3 includes an inductor 31 fixed on the base 1, a controller 32 fixed on the base 1, an electromagnet 33 fixed on the base 1, and an elastic member for driving the fixing block 14 into the fixing groove 221, a probe of the inductor 31 faces upward and is aligned with the lever frame 132, the inductor 31 is used for sensing the rotation of the lever frame 132, the controller 32 is electrically connected with the inductor 31 and the electromagnet 33, and the electromagnet 33 is magnetically attracted to the fixing block 14. The elastic member includes a second spring 34 sleeved on the guide rod 151, one end of the second spring 34 is connected to the side wall of the sliding block 1411, and the other end is connected to the inner wall of the sliding slot 15. The number of the second springs 34 may be one, and the number of the second springs 34 may also be two, in this embodiment, the second spring is selected, the two second springs 34 are respectively sleeved at two ends of the guide rod 151, and the two second springs 34 enable the fixing block 14 to be stably clamped in the fixing groove 221.

The implementation principle of the inner ring flatness measuring instrument in the embodiment of the application is as follows: when the flatness of the inner ferrule is measured, the inner ferrule is fixed on the supporting column 2 by the three-jaw chuck 21, if the lever frame 132 is in a horizontal state, the electromagnet 33 attracts the fixing block 14 by magnetic force, and simultaneously the two second springs 34 are respectively in a stretching or compressing state, if the measuring head of the lever frame 132 contacts the uneven part of the inner ferrule, the lever frame 132 swings around the rotating shaft 134, the sensor 31 detects that the rotating shaft 134 rotates and transmits an electric signal to the controller 32, the controller 32 controls the electromagnet 33 to be powered off, the two second springs 34 respectively start to retract or rebound and drive the sliding block 1411 to stably slide along the sliding groove 15 by elastic force, so that the fixing block 14 stably moves towards the fixing groove 221 until the fixing block 14 enters the fixing groove 221 and abuts against the inner wall of the fixing groove 221, the rotation of the supporting column 2 and the inner ferrule can be limited, and the contact part of the measuring head of the inner ferrule and the lever frame 132 is the uneven area, therefore, the effect of conveniently positioning the uneven area of the inner ring is realized, the inner ring sleeve can be assisted to be trimmed by production personnel, and the quality of the finished bearing is improved.

Example two

Referring to fig. 4 and 5, the difference between the second embodiment of the present invention and the first embodiment of the present invention is that the driving mechanism 3 can be provided in one set, and the driving mechanism 3 can also be provided in two sets, and the second embodiment of the present invention is selected, and the two sets of driving mechanisms 3 are respectively located at two ends of the rotating shaft 134, so as to smoothly push the fixing block 14. The driving mechanism 3 comprises an elliptical plate 35 fixedly sleeved at the end of the rotating shaft 134, a transmission block 36 slidably arranged on the measuring frame 13, and a hinge rod 37 hinged on the transmission block 36. The side wall of the transmission block 36 close to the measuring frame 13 is fixed with a guide block 361 (refer to fig. 7), the measuring frame 13 is provided with a guide groove 135 (refer to fig. 7) matched with the guide block 361 in a sliding manner, the length direction of the guide groove 135 is parallel to the length direction of the sliding groove 15, two ends of the guide groove 135 in the length direction are arranged in a closed manner, the guide block 361 slides in the length direction of the guide groove 135, so that the transmission block 36 stably slides on the measuring frame 13, and the sliding direction of the transmission block 36 is parallel to the sliding direction of the sliding block 1411.

Referring to fig. 5 and 6, the driving block 36 abuts against the outer peripheral wall of the elliptical plate 35, and when the lever frame 132 is in the horizontal state, the end of the elliptical plate 35 along the minor axis abuts against the driving block 36. The driving block 36 has first ear plates 362 fixed to both sides of the hinge rod 37, a first rotating rod fixed between the first ear plates 362, and the end of the hinge rod 37 swings around the first rotating rod. The end part of the hinge rod 37 far away from the transmission block 36 is hinged to the fixed block 14, the two opposite sides of the movable part 141 are both fixed with connecting plates 1412, the two hinge rods 37 are respectively hinged to the two connecting plates 1412, the two second ear plates 14121 are fixed on the two sides of the hinge rod 37 of the connecting plates 1412, a second rotating rod is fixed between the two second ear plates 14121, and the end part of the hinge rod 37 far away from the transmission block 36 swings around the second rotating rod.

When the flatness measurement is carried out to the inner race, if the lever frame 132 is in the horizontality condition, transmission block 36 butt is in the tip of elliptical plate 35 along the minor axis, if the lever frame 132 begins to rotate, elliptical plate 35 follows the synchronous rotation of lever frame 132, the periphery wall extrusion transmission block 36 of elliptical plate 35 and drive the guide block 361 and slide along the length direction of guide way 135, can promote transmission block 36 to remove towards support column 2 steadily, the both ends of articulated rod 37 take place to rotate simultaneously and promote fixed block 14 to slide towards fixed slot 221, until fixed block 14 butt in the diapire of fixed slot 221, can restrict the rotation of support column 2 and inner race, above-mentioned control structure is simple, the cost is lower. Meanwhile, the distance between the fixing block 14 and the fixing groove 221 is adjusted, so that the rotation angle of the hinge rod 37 when the support column 2 cannot rotate is controlled, areas with different flatness can be positioned, and the application range of the inner ring flatness measuring instrument is favorably widened.

Referring to fig. 5 and 6, in order to enable the fixing block 14 to move only in a single direction, a limiting component 4 for guiding the driving block 36 to move in a single direction is arranged between the driving block 36 and the measuring frame 13, the limiting component 4 comprises a limiting rod 41 penetrating through the driving block 36 and a helical rack 42 connected to the measuring frame 13, the end of the limiting rod 41 abuts against the tooth surface of the helical rack 42, the length direction of the helical rack 42 is parallel to the length direction of the sliding groove 15, and the limiting rod 41 can only move towards the supporting column 2, so that the fixing block 14 can only move towards the supporting column 2, the risk that the fixing block 14 slides out of the fixing groove 221 freely is reduced, the rotation of the supporting column 2 and the inner ferrule can be limited stably, and the positioning accuracy of the uneven area of the inner ferrule is further improved.

Referring to fig. 5 and 8, in order to facilitate the replacement of the rack 42 with different tooth pitches, the measuring rack 13 is fixedly provided with a shelf plate 5, and the shelf plate 5 is detachably connected with the rack 42. The resting plate 5 is provided with a groove 51 for placing the helical rack 42, the side wall of the groove 51 of the resting plate 5 is provided with a movable groove 52, and the notch of the movable groove 52 faces the inside of the groove 51. The placing plate 5 is provided with a movable block 6 in the movable groove 52 in a sliding manner, the movable block 6 slides along the length direction of the movable groove 52, and the movable block 6 is provided with a bottom wall with an inclined surface and the inclined surface of the movable block 6 deviates from the groove 51. The end of the helical rack 42 is provided with a clamping groove 421 matched with the movable block 6 in a clamping manner, the length direction of the clamping groove 421 is parallel to the length direction of the movable groove 52, and when the helical rack 42 is far away from the side wall of the tooth surface and abuts against the bottom wall of the groove 51, the notch of the clamping groove 421 is aligned with the notch of the movable groove 52.

Referring to fig. 5 and 8, the resting plate 5 is provided with a driving hole 53 communicated with the movable slot 52, the length direction of the driving hole 53 is parallel to the length direction of the movable slot 52, the resting plate 5 is provided with a driving block 61 in the driving hole 53 in a sliding manner, and the driving block 61 is fixedly connected with the movable block 6. In order to stably connect the rack 42 and the resting plate 5, the resting plate 5 is provided with a third spring 521 in the movable groove 52, one end of the third spring 521 is connected to the bottom wall of the movable groove 52, and the other end is connected to the side wall of the movable block 6 away from the rack.

When the helical rack 42 needs to be replaced, the driving block 61 is pushed to slide in the driving hole 53, and the movable block 6 is driven to slide out of the clamping groove 421 gradually, until the movable block 6 completely enters the clamping groove 421, the helical rack 42 can be taken out from the groove 51; then, a new oblique rack 42 is placed in the groove 51, the oblique rack 42 extrudes the inclined surface of the movable block 6, the movable block 6 completely enters the movable groove 52, the third spring 521 is compressed at the same time, until the oblique rack 42 abuts against the bottom wall of the groove 51, the notch of the movable groove 52 is aligned with the notch of the clamping groove 421, the third spring 521 starts to rebound and pushes the movable block 6 to enter the clamping groove 421, and the third spring 521 continuously exerts elastic force on the movable block 6, so that the movable block 6 stably abuts against the inner wall of the clamping groove 421, and the replacement of the oblique rack 42 can be completed.

The implementation principle of the inner ring flatness measuring instrument in the embodiment of the application is as follows: when flatness measurement is performed on the inner ferrule, the three-jaw chuck 21 fixes the inner ferrule on the supporting column 2, if the lever frame 132 is in a horizontal state, the transmission block 36 abuts against the end portion of the elliptical plate 35 along the short axis, if the measuring head of the lever frame 132 contacts the uneven position of the inner ferrule, the lever frame 132 swings around the rotating shaft 134, the elliptical plate 35 rotates synchronously along with the lever frame 132, the peripheral wall of the elliptical plate 35 presses the transmission block 36 and pushes the transmission block 36 to move towards the supporting column 2 stably, meanwhile, the two ends of the hinge rod 37 rotate and push the fixed block 14 to slide towards the fixed groove 221 until the fixed block 14 enters the fixed groove 221 and abuts against the inner wall of the fixed groove 221, rotation of the supporting column 2 and the inner ferrule can be limited, the contact position of the inner ferrule and the measuring head of the lever frame 132 is an uneven area, and the bevel rack 42 can limit the limiting rod 41 and the transmission block 36 to move towards a direction away from the supporting column 2, the risk that the fixing block 14 slides out of the fixing groove 221 freely is reduced, so that the effect of conveniently positioning the uneven area of the inner ring is achieved, production personnel can be assisted in trimming the inner ring sleeve, and the quality of the finished bearing is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an inner race flatness measuring apparatu, includes base (1), locating plate (11), stand (12), measuring rack (13), measuring instrument (131), lever frame (132), first spring (133) and pivot (134), its characterized in that: the end part, far away from the upright post (12), of the base (1) is rotatably connected with a supporting column (2), a three-jaw chuck (21) for fixing an inner ferrule is detachably fixed at the end part, far away from the base (1), of the supporting column (2), a circular ring (22) is fixedly sleeved on the outer peripheral wall of the supporting column (2), a plurality of fixing grooves (221) are formed in the edge of the circular ring (22), a fixing block (14) matched with the fixing grooves (221) in a clamping mode is arranged in the base (1) in a sliding mode, and a driving mechanism (3) for driving the fixing block (14) to slide is arranged between the measuring frame (13) and the base (1);

actuating mechanism (3) including being fixed in inductor (31) on base (1), being fixed in controller (32) on base (1), being fixed in electro-magnet (33) on base (1) and being used for driving about fixed block (14) get into the elastic component of fixed slot (221), inductor (31) are used for the response the rotation of lever frame (132), controller (32) respectively with inductor (31) with electro-magnet (33) electricity is connected, electro-magnet (33) with fixed block (14) magnetism attracts mutually.

2. The inner race flatness gauge according to claim 1, wherein: the side wall of fixed block (14) is fixed with slider (1411), base (1) set up with slider (1411) sliding fit's spout (15), just base (1) in spout (15) internal fixation has guide bar (151), slider (1411) cover is located on guide bar (151).

3. The inner race flatness gauge according to claim 2, wherein: the elastic piece comprises a second spring (34) sleeved on the guide rod (151), one end of the second spring (34) is connected to the side wall of the sliding block (1411), and the other end of the second spring is connected to the inner wall of the sliding groove (15).

4. The inner race flatness gauge according to claim 3, wherein: the number of the second springs (34) is two, and the two second springs (34) are respectively sleeved at two ends of the guide rod (151).