Device for detecting end face runout of bearings at both ends of workpiece

Abstract

The purpose of the present invention is to provide a quick, convenient, efficient and economical device for detecting the end face runout of the bearings at both ends of a workpiece. A device for detecting the end face runout of the bearings at both ends of a workpiece, comprising a bottom plate, a positioning block for supporting and positioning the workpiece is provided on the bottom plate, a detection frame is provided on both sides of the positioning block, the detection frame comprises a left detection frame and a right detection frame, a micrometer is fixed to the left part of the left detection frame and the right part of the right detection frame, the positioning block has a V-shaped groove which opens upward and is used to support the outer ring of the bearing on the workpiece, the positioning block is provided with a left and a right give way groove which are located at the lower side of the V-shaped groove and connected to the V-shaped groove, the right part of the left detection frame is hingedly fixed in the left give way groove so that the left part of the left detection frame can be flipped downward, and the left part of the right detection frame is hingedly fixed in the right give way groove so that the right part of the right detection frame can be flipped downward.

Description

Technical Field

[0001] The invention relates to a bearing runout inspection tool, in particular to a device for detecting the runout of bearing end surfaces at both ends of a workpiece. Background Art

[0002] In the new energy vehicle reducer industry, bearings are widely used as important parts to ensure product performance and quality. Both ends of the input shaft of the reducer assembly, both ends of the intermediate shaft and both ends of the differential need bearing support to work properly, and the runout of the bearings at both ends is a key factor in their normal operation.

[0003] Traditionally, the detection of bearing runout is mainly done by using a V-block with a dial indicator. This method has low detection efficiency and is greatly affected by the proficiency of the inspector, making it unsuitable for mass use. Another method uses a deflection meter for detection, which is costly and uneconomical. Therefore, new energy vehicle reducer companies are in urgent need of a quick, convenient, efficient and economical bearing runout inspection tool. Summary of the invention

[0004] The purpose of the present invention is to provide a quick, convenient, efficient and economical device for detecting the end face runout of bearings at both ends of a workpiece.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for detecting the end face runout of a bearing at both ends of a workpiece, comprising a bottom plate, a positioning block for supporting and positioning the workpiece is provided on the bottom plate, a detection frame is provided on both sides of the positioning block, the detection frame comprises a left detection frame and a right detection frame, a micrometer is fixed on the left part of the left detection frame and the right part of the right detection frame, the positioning block has a V-shaped groove which is open upward and is used to support the outer ring of the bearing on the workpiece, the positioning block is provided with a left give way groove and a right give way groove which are located at the lower side of the V-shaped groove and connected to the V-shaped groove, the right part of the left detection frame is hingedly fixed in the left give way groove so that the left part of the left detection frame can be turned downward, and the left part of the right detection frame is hingedly fixed in the right give way groove so that the right part of the right detection frame can be turned downward; when the workpiece is placed in the V-shaped groove, the outer ring of the bearing of the workpiece contacts the groove wall of the V-shaped groove, and the upper edge of the right part of the left detection frame and the upper edge of the left part of the right detection frame respectively contact the outer rings of the bearings at both ends of the workpiece, and the detection ends of the detection rods of the two micrometers are respectively in contact with the inner rings of the bearings at both ends of the workpiece.

[0006] When the device of the present invention is used, when no workpiece is placed, under the action of gravity, the left part of the left detection frame flips downward, and the right part of the right detection frame flips downward, so that the detection rod of the micrometer is vertically inclined, so that there is a placement space for the workpiece to pass between the two micrometer detection ends, and then the workpiece is placed downward, so that the bearings at both ends of the workpiece are in contact with the V-shaped groove wall, and the gravity of the workpiece drives the left detection frame and the right detection frame to reset, so that the detection rod of the micrometer changes from a vertically inclined state to a horizontal setting state, thereby realizing the contact between the micrometer detection end and the inner ring of the bearing, and finally the worker rotates the axis of the workpiece manually or by other means to detect the end face runout of the inner ring of the bearing. Among them, it is known that the micrometer of the present invention can also be replaced with a dial indicator or a multimeter according to the detection accuracy requirements.

[0007] The device of the present invention is not provided with a runout meter, nor does it need to be provided with a cylinder for driving the micrometer to move axially. The worker is not required to perform axial movement of the micrometer. The worker only needs to perform operations such as putting down the workpiece, rotating the axis of the workpiece, and taking out the workpiece, which is faster, more convenient, more efficient and more economical.

[0008] Preferably, the positioning block comprises a left positioning block and a right positioning block, and both the left positioning block and the right positioning block are provided with the V-shaped groove penetrating left and right and opening upward, the left giving way groove penetrating the left positioning block to the left, and the right positioning groove penetrating the right positioning block to the right.

[0009] The above arrangement reduces the consumption of the positioning block, and the left positioning block and the right positioning block can be used to make way for the gear on the shaft of the workpiece. At the same time, the compatibility of the device of the present invention is improved, and the distance between the left and right positioning blocks can be adjusted to meet the requirements of the runout detection of workpieces of different models and series.

[0010] Preferably, a support assembly is provided on the lower left side of the left detection frame and the lower right side of the right detection frame, and the support assembly includes a support block, and a compression spring and a support rod are provided in the support block. The upper end of the support rod moves upward under the action of the compression spring to contact the detection frame.

[0011] The side of the detection frame that deviates from the positioning block is supported by the compression spring and the support rod to overcome a certain gravity of the detection frame, so that the detection frame will not flip under the weight of the workpiece, and the position of the micrometer detection rod on the detection frame is maintained to ensure the detection accuracy. The support assembly is also used to reset the detection frame, so that the reset of the detection frame is faster and more convenient.

[0012] Preferably, a rolling member with a circular cross-section outer edge can be rotatably fixed on the upper right side of the left detection frame and the upper left side of the right detection frame, and the workpiece is placed in the V-shaped groove of the positioning block so that the outer ring of the bearing contacts the upper edge of the rolling member. The rolling member can rotate so that more surfaces can contact the outer ring of the workpiece bearing, so as to reduce the wear of the contact between the detection frame and the workpiece, and extend the service life of the detection frame.

[0013] Preferably, the rolling element has a ring-shaped cross section and is fixed to the detection frame via a rotating shaft. The rolling element can be made of unprocessed gear pieces or bearings instead of steel balls, and the cost of the rolling element and the component preventing the rolling element from detaching is lower.

[0014] Preferably, the rotating shaft is arranged along the front-rear direction. The above arrangement prevents the bearing on the workpiece from driving the rolling element to rotate, so as to further reduce the wear of the rolling element.

[0015] Preferably, at least one of the left and right sides of the positioning block is provided with a limit assembly, and the limit assembly has a limit surface for contacting the outer ring of the bearing of the workpiece. The above arrangement can achieve a better axial positioning effect of the workpiece, and the contact between the detection end of the micrometer and the inner ring of the bearing can be achieved without axial movement of the micrometer.

[0016] Preferably, the limit assembly includes a fixing plate and an adjusting column, the adjusting column is arranged in the left-right direction, the fixing plate is fixed to the positioning block, the fixing plate has a fixing hole that penetrates left and right to cooperate with the adjusting column, the axial end face of one side of the adjusting column is the limit surface, the outer wall of the adjusting column and the inner wall of the fixing hole form a threaded structure that cooperates with each other or the adjusting column is threaded with at least two fixing nuts. The adjusting column can be moved to realize the detection of workpieces of different models, so that the application range of the present invention is wider.

[0017] Preferably, the left detection frame or / and the right detection frame is composed of a hinged part and a fixed part, the left end of the hinged part is hinged and fixed to the positioning block, the micrometer is fixed on the fixed part, the hinged part has a strip groove arranged along the left and right directions on the side deviating from the left end, the fixed part has a fixed rod extending into the strip groove, the fixed rod is slidably fitted in the strip groove, and a locking piece for maintaining the left and right position of the fixed rod is provided on the fixed rod. The left and right position of the micrometer can also be adjusted to make the present invention suitable for bearing end surface detection of workpieces of different models.

[0018] Preferably, the hinged part is provided with a guide groove running through the front and back, the locking member includes a guide block, the guide block and the guide groove both have planes that can contact each other to limit the rotation of the guide block, a limiting portion is provided at one end of the guide block, and a locking nut is provided at the other end of the guide block, the guide block has a fixing groove running through the top and bottom, and the fixing rod is fixed in the fixing groove.

[0019] The height of the micrometer can be adjusted to make the present invention applicable to bearing end surface detection of workpieces of different models. The fixing rod of the fixing part can be fixed to the guide block by thread fixing or matching with a nut.

[0020] The invention has the advantages of being quick, convenient, efficient and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A usage state diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the present invention when it is not in use;

[0023] Figure 3 It is a structural schematic diagram of the right detection frame of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0025] Depend on Figures 1 to 3 As shown, a device for detecting the end face runout of a bearing at both ends of a workpiece of the present invention comprises a base plate 1, on which a positioning block for supporting and positioning the workpiece is provided, the positioning block comprises a left positioning block 2 and a right positioning block 3, and an L-shaped detection frame is provided on both sides of the positioning block, the detection frame comprises a left detection frame 4 located on the left side of the left positioning block 2 and a right detection frame 5 located on the right side of the right positioning block 3, and a micrometer 6 is fixed to the left part of the left detection frame 4 and the right part of the right detection frame 5. Among them, the fixing structure of the micrometer and the detection frame adopts the existing conventional fixing method.

[0026] Both the left positioning block 2 and the right positioning block 3 are provided with a V-shaped groove 12 which penetrates from left to right and opens upward for supporting the outer ring of the bearing 11 on the workpiece 10. The left positioning block 2 is provided with a left give way groove 21 which is located at the lower side of the V-shaped groove 12 and connected with the V-shaped groove 12. The right positioning block 3 is provided with a right give way groove 31 which is located at the lower side of the V-shaped groove 12 and connected with the V-shaped groove 12. The left give way groove 21 penetrates the left positioning block 2 from left to right, and the right give way groove 31 penetrates the right positioning block 3 from left to right. The right part of the left detection frame 4 is hingedly fixed in the left give way groove 21 so that the left part of the left detection frame 4 can be flipped up and down, and the left part of the right detection frame 5 is hingedly fixed in the right give way groove 31 so that the right part of the right detection frame 4 can be flipped up and down. When the workpiece 10 is placed in the V-groove, the outer ring of the bearing 11 of the workpiece 10 contacts the wall of the V-groove, and the upper edge of the right part of the left detection frame 4 and the upper edge of the left part 5 of the right detection frame respectively contact the outer rings of the bearings 10 at both axial ends of the workpiece 10, and the detection ends 62 of the detection rods 61 of the two micrometers 6 respectively contact the axial end faces of the inner rings of the bearings at both axial ends of the workpiece.

[0027] The lower left side of the left detection frame 4 and the lower right side of the right detection frame 5 are both provided with support components, which include a support block 71, in which a compression spring 72 and a support rod 73 are provided, and the upper end of the support rod 73 moves upward to contact the detection frame under the action of the compression spring 72. The support block 71 has a receiving groove that runs through from top to bottom and has a small opening at one end and a large opening at the other end. One end of the support rod 73 is a thick section located in the receiving groove, and one end of the support rod 73 is a thin section to pass through the support block upward. A plug is threadedly fixed at the bottom of the receiving groove of the support block, and the two ends of the compression spring are respectively against the plug and the thick section of the support rod.

[0028] A rolling member 9 with a circular outer edge in cross section can be rotatably fixed on the upper right side of the left detection frame 4 and the upper left side of the right detection frame 5, and the workpiece 10 is placed in the V-shaped groove of the positioning block so that the outer ring of the bearing 11 contacts the upper edge of the rolling member 9. The rolling member 9 is arranged in a ring shape in cross section, and the rolling member 9 is fixed to the detection frame through a rotating shaft 91, and the rotating shaft 91 is arranged along the front-back direction.

[0029] A limiting assembly is fixed on the left side of the left positioning block 2, and the limiting assembly has a limiting surface for contacting the outer ring of the bearing 11 of the workpiece 10. The limiting assembly includes a fixing plate 81 and an adjusting column 82. The adjusting column 82 is arranged along the left and right directions. The fixing plate 81 and the left positioning block are fixed together by bolts. The fixing plate 81 has fixing holes that penetrate the left and right sides to cooperate with the adjusting column 82. The right axial end face of the adjusting column 82 is the limiting surface, and the outer wall of the adjusting column 82 and the inner wall of the fixing hole form a threaded structure that cooperates with each other.

[0030] The right detection frame 5 is composed of a hinged portion 51 and a fixed portion 52. The left end of the hinged portion 51 is hinged and fixed to the right positioning block 3. A micrometer 6 is fixed on the fixed portion 52. The hinged portion 51 has a strip groove 53 arranged in the left and right directions at the side deviating from the left end. The fixed portion 52 has a fixed rod 54 extending into the strip groove 53. The fixed rod 54 is slidably fitted in the strip groove 53, and a locking member for maintaining the left and right position of the fixed rod 54 is provided on the fixed rod 54. The hinged portion 51 is provided with a guide groove 55 that passes through the front and back and communicates with the strip groove. The locking member includes a guide block 56. The guide block 56 and the guide groove 55 both have a plane 57 that can contact each other to limit the rotation of the guide block. A limiting portion 58 is provided at one end of the guide block 56, and a locking nut 59 is provided at the other end of the guide block 56. The guide block 56 has a fixed groove that passes through the top and bottom, and the fixed rod 54 is threadedly fixed in the fixed groove.

[0031] When the device of the present invention is used, when no workpiece is placed, under the action of gravity, the left part of the left detection frame flips downward, and the right part of the right detection frame flips downward, so that the detection rod of the micrometer is vertically inclined, so that there is a placement space for the workpiece to pass between the two micrometer detection ends, and then the workpiece is placed downward, so that the bearings at both ends of the workpiece are in contact with the V-shaped groove wall, and the left detection frame and the right detection frame are reset by the gravity of the workpiece and the elastic force of the compression elastic force of the support assembly, so that the detection rod of the micrometer changes from a vertically inclined state to a horizontally set state, thereby realizing the contact between the micrometer detection end and the inner ring of the bearing, and finally the worker rotates the axis of the workpiece manually or by other means to detect the end face runout of the inner ring of the bearing. Among them, it is known that the micrometer of the present invention can also be replaced with a dial indicator or a multimeter according to the detection accuracy requirements.

[0032] The invention has the advantages of being quick, convenient, efficient and economical.

Claims

1. A device for detecting the end face runout of bearings at both ends of a workpiece, characterized in that The invention comprises a bottom plate, a positioning block for supporting and positioning a workpiece is provided on the bottom plate, a detection frame is provided on both sides of the positioning block, the detection frame comprises a left detection frame and a right detection frame, a micrometer is fixed on the left part of the left detection frame and the right part of the right detection frame, the positioning block has a V-shaped groove which is open upward and is used to support the outer ring of the bearing on the workpiece, the positioning block is provided with a left and a right makeshift groove which are located at the lower side of the V-shaped groove and are connected to the V-shaped groove, the right part of the left detection frame is hingedly fixed in the left makeshift groove so that the left part of the left detection frame can be turned downward, and the left part of the right detection frame is hingedly fixed in the right makeshift groove so that the right part of the right detection frame can be turned downward; when the workpiece is placed in the V-shaped groove, the outer ring of the bearing of the workpiece and the V The left detection frame contacts the groove wall, and the upper edge of the right part of the left detection frame and the upper edge of the left part of the right detection frame respectively contact the outer rings of the bearings at both ends of the workpiece, and the detection ends of the detection rods of the two micrometers are respectively in contact with the inner rings of the bearings at both ends of the workpiece; the positioning block includes a left positioning block and a right positioning block, and the left positioning block and the right positioning block are both provided with the V-shaped groove that penetrates left and right and opens upward, the left give way groove penetrates the left positioning block to the left, and the right give way groove penetrates the right positioning block to the right; the lower side of the left part of the left detection frame and the lower side of the right part of the right detection frame are both provided with support components, and the support components include support blocks, and compression springs and support rods are arranged in the support blocks, and the upper end of the support rod moves upward under the action of the compression spring to contact the detection frame.

2. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 1, characterized in that The upper right side of the left detection frame and the upper left side of the right detection frame can be rotatably fixed with a rolling element with a circular cross-section outer edge. The workpiece is placed in the V-shaped groove of the positioning block so that the outer ring of the bearing contacts the upper edge of the rolling element.

3. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 2, characterized in that The rolling element has a ring-shaped cross section and is fixed to the detection frame via a rotating shaft.

4. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 3, characterized in that The rotating shaft is arranged along the front-rear direction.

5. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 1, characterized in that At least one of the left and right sides of the positioning block is provided with a limiting component, and the limiting component has a limiting surface for contacting the outer ring of the bearing of the workpiece.

6. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 5, characterized in that The limiting assembly includes a fixing plate and an adjusting column, the adjusting column is arranged in the left and right directions, the fixing plate is fixed to the positioning block, the fixing plate has fixing holes penetrating from the left and right sides to cooperate with the adjusting column, one side axial end face of the adjusting column is the limiting surface, the outer wall of the adjusting column and the inner wall of the fixing hole form a threaded structure that cooperates with each other or the adjusting column is threaded with at least two fixing nuts.

7. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 1, characterized in that The left detection frame and / or the right detection frame are composed of a hinged part and a fixed part. The left end of the hinged part is hinged and fixed to the positioning block. The micrometer is fixed on the fixed part. The hinged part has a strip groove arranged along the left and right directions on the side deviating from the left end. The fixed part has a fixing rod extending into the strip groove. The fixing rod is slidably fitted in the strip groove, and a locking piece for maintaining the left and right position of the fixing rod is provided on the fixing rod.

8. The device for detecting end face runout of bearings at both ends of a workpiece according to claim 7, characterized in that The hinged part is provided with a guide groove running through the front and back, the locking part includes a guide block, the guide block and the guide groove both have planes that can contact each other to limit the rotation of the guide block, one end of the guide block is provided with a limiting part, and the other end of the guide block is provided with a locking nut, the guide block has a fixing groove running through the top and bottom, and the fixing rod is fixed in the fixing groove.

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