CN106931925B

CN106931925B - Detection equipment for length and inner hole size of shaft

Info

Publication number: CN106931925B
Application number: CN201710286965.5A
Authority: CN
Inventors: 吴承友; 屠伟
Original assignee: Jiaxing Shengyou Machinery Technology Co ltd
Current assignee: Jiaxing Shengyou Machinery Technology Co ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2022-11-15
Anticipated expiration: 2037-04-27
Also published as: CN106931925A

Abstract

The invention provides a device for detecting the length of a shaft and the size of an inner hole, and belongs to the technical field of measurement. The detection device solves the technical problem that the existing shaft is not detected by corresponding automatic equipment and the like. This check out test set of length of axle and hole size includes the workstation, be equipped with the measuring table on the workstation, be equipped with three detection base on the measuring table, the axle core of three detection base can rotate through rotating-structure is synchronous, be equipped with the station transfer device that can shift the axle on the workstation, be equipped with on the workstation and peg graft the telescopic automatic feeding device of feeding switching-over with the axle in the hopper to horizontality, be equipped with on the workstation and transfer the automatic discharging device in the magazine with the axle of pegging graft in the ejection of compact switching-over sleeve of horizontality, still be equipped with the length detection device that can detect axle length on the workstation and can detect the hole detection device of hole size in the axle. The invention has the advantages of improving the accuracy of the detection data and improving the detection efficiency.

Description

Detection equipment for length and inner hole size of shaft

Technical Field

The invention belongs to the technical field of measurement, and relates to a device for detecting the length of a shaft and the size of an inner hole.

Background

In the field of high-precision equipment, the size requirement of parts in the equipment is high, so that the parts are detected after being manufactured so as to remove defective products with sizes which do not meet the requirement. The shaft is provided with two sections with different diameters, a step is formed between the two sections with different diameters, an inner hole is formed in the end of one section with a smaller diameter of the shaft, and the lengths of the two sections of the shaft and the diameter of the inner hole need to be detected before assembly. At present, no special equipment is used for automatically detecting the shaft with the structure, the detection of the shaft is mainly carried out manually by adopting a special instrument detection mode, the method is low in efficiency, and errors are easy to occur in manual detection.

Disclosure of Invention

The invention aims to provide detection equipment for the length of a shaft and the size of an inner hole aiming at the problems in the prior art, and the technical problems to be solved by the invention are that the accuracy of detection data is improved and the detection efficiency is improved.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a detection equipment of length and hole size of axle, includes the workstation, its characterized in that, the middle part of workstation is equipped with can follow workstation horizontal slip's measuring table, be equipped with the three detection base that sets up side by side on the measuring table, it is connected with the axle core that is used for the location axle to detect the base internal rotation, the vertical setting of axle core, it is three the axle core that detects the base can rotate through rotating-structure synchronization, the both ends that lie in three detection base on the measuring table rotate respectively and are equipped with feeding switching-over sleeve and ejection of compact switching-over sleeve, feeding switching-over sleeve and ejection of compact switching-over sleeve can rotate to horizontality or vertical state, be equipped with on the workstation and can shift the axle again to the telescopic station transfer device of ejection of compact switching-over of vertical state after looping through three detection base from the feeding switching-over sleeve of vertical state, lie in the workstation and be fixed with the hopper of depositing the axle, be equipped with on the workstation can be automatic and in proper order peg graft the telescopic automatic feeding device of feeding switching-over sleeve to the horizontality on the workstation and detect the length of the base and detect the base that the axle can detect the material on the base and detect the horizontal state in addition, the base on the workstation and detect the length of the axle and detect the base and detect the material transfer device that the axle.

When detecting, the less one section of axle diameter inserts the axle core, the step of axle supports with the axle core and leans on and makes the vertical setting of axle, realize waiting to detect the automatic feeding of axle through automatic feeding device, realize the axle at feeding switching-over sleeve through station transfer device, detect the station transfer between base and the ejection of compact switching-over sleeve, through the length detection device and the inner hole detection device respectively the length of counter shaft and the automated inspection of the hole of axle, make the axle rotation through rotating-structure simultaneously in the testing process, improve the precision of axle length and hole size detection, realize detecting the axle automatic discharge's after accomplishing process through automatic discharging device, finally realize the full automation that the axle detected, improve the accuracy of detected data, the efficiency of detection has been improved simultaneously.

In the length of foretell axle and hole size's check out test set, length detection device includes distance sensor and lower distance sensor, distance sensor fixes on the measuring table down and corresponds the axle core that detects the base and be located distance sensor under directly over, it fixes on the workstation and corresponds the axle core that detects the base and can move to distance sensor under. The upper distance sensor and the lower distance sensor are respectively contacted with the upper end surface and the lower end surface of the shaft, and the positions among the upper distance sensor, the lower distance sensor and the shaft core are determined, so that the length of a section with a larger shaft diameter can be detected by the upper distance sensor, and the length of a section with a smaller shaft diameter can be detected by the lower distance sensor; during detection, the rotating structure drives the shaft core to rotate, so that the shaft can rotate along with the rotation, the upper distance sensor can be respectively contacted with different positions of the upper end surface of the shaft, the lower distance sensor can be respectively contacted with different positions of the lower end surface of the shaft, and the lengths of a section with a larger diameter and a section with a smaller diameter of the shaft can be accurately obtained through measurement of a plurality of positions; preferably, the upper distance sensor and the lower distance sensor in the application adopt a GT2-A50 sensor which is an existing product.

In the check out test set of the length of foretell axle and hole size, hole detection device is including detecting air pump and airtight measuring apparatu, be equipped with the crane on the workstation, be fixed with two vertical pneumatic gauge heads that upwards set up and crane on the crane and can drive two pneumatic gauge heads and reciprocate, two pneumatic gauge head can be located respectively and correspond two axle cores that detect the base under, it passes through the trachea with airtight measuring apparatu to detect the air pump and is connected, airtight measuring apparatu passes through the trachea and is connected with two pneumatic gauge heads respectively. The pneumatic side head is lifted by the lifting frame and penetrates into the inner hole of the shaft, meanwhile, the inflation of the air pump is detected, and the airflow enters the inner hole through the pneumatic measuring head after passing through the air tightness measuring instrument; because the pneumatic gauge head does not necessarily lie in the axis of axle when penetrating the hole of axle, consequently make dynamic change between the inner wall of axle hole and the pneumatic side head through the axis of rotation when detecting, airtight measuring apparatu can detect the pressure change from pneumatic gauge head outflow gas, and compare with the value of prestoring with data transmission on the computer, if data then the hole size of axle satisfies the requirement in the scope of the value of prestoring, if data then the hole size of axle is unqualified outside the scope of the value of prestoring, carry out twice detection through the hole of two sets of detection bases counter shaft, guarantee the precision of detection.

In the length of foretell axle and hole size's check out test set, rotating-structure includes driving motor and belt, it includes and rotates upper bearing and the lower bearing of connection in the bearing frame with the fixed bearing frame of measuring table to detect the base, the axle core is pegged graft and is fixed a position the inner circle at the upper bearing, it has the pulley axle to peg graft in the inner circle of lower bearing, the clearance of stepping down has one between axle core and the pulley axle, the pulley axle is fixed a position and the pulley axle can be relative axle core along axial displacement with the axle core in week, bearing frame and fixedly connected with driven pulley are worn out to the lower extreme of pulley axle, driven pulley has the clearance of stepping down two with the lower terminal surface of bearing frame, driving motor fixes on the measuring table, be fixed with driving pulley in driving motor's the pivot, connect through the belt of tensioning between driving pulley and the three driven pulley. The shaft core and the belt pulley shaft are rotatably connected in the bearing seat through the upper bearing and the lower bearing respectively, the connecting structures between the shaft core and the belt pulley shaft are mutually independent, the shaft core and the belt pulley shaft are only positioned in the circumferential direction, the belt can float up and down when driving the driven pulley to rotate, the driven pulley can drive the belt pulley shaft to float up and down, the shifting gap I enables a space which floats up and down to be formed between the belt pulley shaft and the shaft core, the shifting gap II enables a space which floats up and down to be formed between the driven pulley and the bearing seat, and the shaft core is not connected with the belt pulley shaft in the axial direction, so that the up and down floating of the driven pulley and the belt pulley shaft cannot cause the vibration or movement of the shaft core or the bearing seat, and a shaft to be detected positioned on the shaft core cannot be influenced, and the precision and the accuracy of shaft detection can be ensured; through a belt drive a plurality of driven pulley rotation, can realize a plurality of detection base synchronous detection, compact structure and detection efficiency are higher.

In the length of foretell axle and the check out test set of hole size, station transfer device includes installing support, lift cylinder, translation cylinder and clamping jaw, the installing support is fixed on the workstation, the vertical downward fixation of lift cylinder is on the installing support, the translation cylinder is fixed on the telescopic link of lift cylinder, the telescopic link of translation cylinder is perpendicular with the slide rail, the clamping jaw with detect the base one-to-one, be fixed with the mounting panel on the telescopic link of translation cylinder, the clamping jaw is fixed side by side on the mounting panel and is located and detects the base top. In the shaft detection process, the clamping jaws can move up and down through the lifting air cylinder to enable the shaft to move out of the shaft core, the shaft can move from the position right above one detection base to the position right above the other detection base through the left-right sliding of the measuring table, the clamping jaws can retreat through the translation air cylinder, and the interference of the clamping jaws and the shaft during detection is avoided; when station removed each time when detecting in succession, the clamping jaw homoenergetic realized the automatic of axle station and shifted the detection efficiency of axle with axle from the preceding detection base to the next detection base after to.

In the detection equipment for the length of the shaft and the size of the inner hole, the automatic feeding device comprises a push-pull plate, a downward elongated feed opening is formed in the hopper, the push-pull plate is positioned between the workbench and the hopper and can move back and forth along the front direction and the rear direction, a feeding through groove which can only accommodate one shaft is formed in the middle of the push-pull plate, an upper groove opening of the feeding through groove can be aligned with the feed opening, a material pushing support is further fixed on the workbench and positioned at the rear part of the hopper, a material ejecting block which can slide and can slide from one end of the feeding through groove to the other end is arranged on the material pushing support, and the other end of the feeding through groove can be aligned with the feeding reversing sleeve in the horizontal state. The shaft to be detected is placed into the hopper, the push-pull plate is pushed to move forwards until the feeding through groove in the push-pull plate is aligned with the discharging hole, the shaft in the hopper at the discharging hole falls into the feeding through groove, the push-pull plate is retracted, the push-pull plate moves backwards to pull out the shaft in the feeding through groove, the upper plate surface of the push-pull plate is aligned with the discharging hole, the shaft is prevented from falling out of the hopper, the push-pull plate stops moving when moving until the material ejecting block is aligned with the feeding through groove, the feeding through groove is aligned with the feeding reversing sleeve, the material ejecting block slides and pushes the shaft in the feeding through groove to move towards the feeding reversing sleeve until the shaft is inserted into the feeding reversing sleeve, and automatic feeding of the shaft is achieved in a reciprocating mode; the push-pull plate with the feeding through groove moves back and forth to ensure that only one shaft is pulled out at each time, and the shaft is pushed to the feeding reversing sleeve through the material pushing block, so that the structure is simple, and continuous feeding of the shaft can be ensured.

In the length of foretell axle and hole size's check out test set, automatic discharging device is including fixing the arm lock on the workstation, be fixed with ejection of compact support on the workstation, be fixed with the ejection of compact guide rail that the level set up on the ejection of compact support, the magazine is located ejection of compact guide rail under and the both ends of ejection of compact guide rail all are located outside the magazine, sliding connection has the slide on the ejection of compact guide rail, the vertical ejection of compact lift cylinder that is fixed with on the slide, the telescopic link of ejection of compact lift cylinder sets up down, the arm lock is fixed on the telescopic link of ejection of compact lift cylinder. Shaft detection equipment has ejection of compact switching-over sleeve, and the axle that ejection of compact switching-over sleeve will detect the completion rotates to horizontal position, presss from both sides the axle through the arm lock this moment and tightly, and ejection of compact switching-over sleeve is retreated and is made the axle withdraw from in the ejection of compact switching-over sleeve, and the arm lock that rethread slide will accompany the axle removes to the magazine top to make through ejection of compact lift cylinder to press from both sides the arm and descend and place the axle in the magazine, how reciprocal realization automatic discharging.

Compared with the prior art, the detection equipment for the length of the shaft and the size of the inner hole has the advantages of improving the accuracy of detection data and improving the detection efficiency.

Drawings

Fig. 1 is a schematic perspective view of the present detection apparatus.

FIG. 2 is a schematic perspective view of the present test device with the housing removed.

FIG. 3 is a schematic perspective view of the detecting apparatus with the outer casing and the automatic discharging device removed.

Fig. 4 is a schematic perspective view of the automatic feeding device.

Fig. 5 is a schematic sectional structure view of the automatic feeding device.

Fig. 6 is a schematic perspective view of the station transfer device, the length detection device, the inner hole detection device and the rotating structure during assembly.

Fig. 7 is a schematic perspective view of the station transfer device.

Fig. 8 is a rear view and a partial enlarged view of the translating cylinder and translating slide block when assembled.

Fig. 9 is a schematic perspective view of the translational air cylinder assembled with the translational sliding seat.

FIG. 10 is a cross-sectional structural view of the detection base.

In the figure, 1, a workbench; 11. a measuring table; 111. a slide rail; 112. a transverse moving pushing cylinder; 113. through the hole; 12. a feed reversing sleeve; 121. a discharge reversing sleeve; 2. mounting a bracket; 21. a lifting cylinder; 211. lifting convex strips; 212. a lifting slide seat; 213. a first connecting block part; 214. installing a flat plate; 215. a reinforcing plate; 22. a translation cylinder; 221. translating the convex strip; 222. a clip; 223. a limiting block; 224. positioning the through groove; 225. positioning the inclined plane; 226. a translational sliding seat; 227. a translation chute; 228. positioning a chamfer; 229. a second connecting block part; 229a, a bayonet; 23. mounting a plate; 24. a clamping jaw; 241. a finger cylinder; 242. a chuck; 243. a groove is embedded; 3. an upper distance sensor; 31. a lower distance sensor; 4. an air tightness measuring instrument; 41. a lifting frame; 411. detecting a lifting cylinder; 412. detecting a lifting slide seat; 413. a measuring head mounting plate; 414. a fixed seat; 42. a pneumatic measuring head; 43. positioning the air cylinder; 44. positioning the head; 5. detecting a base; 51. a shaft core; 511. an upper through hole; 512. a first convex ring; 52. a bearing seat; 521. an upper bearing seat; 522. the upper part is abutted against the convex edge; 523. a lower bearing seat; 524. the lower part is abutted against the convex edge; 53. an upper bearing; 54. a lower bearing; 55. a pulley shaft; 551. a convex ring II; 552. a plug rod; 553. a yielding gap I; 554. a driven pulley; 555. a yielding through hole; 556. positioning the convex edge; 557. a guide convex ring; 558. a second abdicating gap; 559. a lower through hole; 56. an end cap; 57. a reference panel; 571. a reference convex surface; 572. a reference convex ring; 58. rotating the fixed bracket; 59. a drive motor; 591. a drive pulley; 592. a belt; 6. a hopper; 6a, a feed opening; 61. a side plate; 611. a tailgate; 612. a sloping plate; 613. a protection plate; 62. a push-pull plate; 621. a feeding through groove; 622. guiding chamfering; 63. a material pushing bracket; 632. a first slide rail; 64. a blanking slide block; 641. fixing the sheet metal part; 642. a fixed part; 65. a material ejection block; 66. a second slide rail; 67. a feeding pushing cylinder; 7. a magazine; 71. a discharging support; 72. a discharge guide rail; 73. a slide base; 74. a discharging lifting cylinder; 75. and (4) clamping arms.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 10, the detection apparatus for detecting the length of a shaft and the size of an inner hole comprises a housing, a workbench 1 fixed in the housing and a measuring table 11 arranged on the workbench 1, three detection bases 5 arranged side by side are arranged on the measuring table 11, a shaft core 51 for positioning the shaft is rotatably connected in the detection bases 5, the shaft core 51 is vertically arranged, the shaft core 51 of the three detection bases 5 can synchronously rotate through a rotating structure, a feeding reversing sleeve 12 and a discharging reversing sleeve 121 are respectively rotatably arranged at two ends of the three detection bases 5 on the measuring table 11, the feeding reversing sleeve 12 and the discharging reversing sleeve 121 can rotate to a horizontal state or a vertical state, a station transfer device capable of sequentially transferring the shaft from the feeding reversing sleeve 12 in the vertical state to the discharging reversing sleeve 121 in the vertical state is arranged on the workbench 1, a hopper 6 for storing the shaft is fixed at one side of the feeding reversing sleeve 12 on the workbench 1, a hopper 7 capable of automatically and sequentially inserting the shaft in the feeding sleeve 12 in the horizontal state is arranged on the workbench 1, and a detection device capable of automatically detecting the length of detecting the discharging shaft and detecting the discharging sleeve 5 is arranged at one side of the inner hole of the detection bases 1, and the discharging sleeve 121 capable of automatically detecting the discharging sleeve 5.

Specifically, as shown in fig. 1 to 3 and fig. 6 and 7, the station transfer device includes a mounting bracket 2, a lifting cylinder 21, a translation cylinder 22, a clamping jaw 24, and two parallel slide rails 111 fixed in the middle of the workbench 1, where the two slide rails 111 are arranged in parallel and at an interval, the measurement platform 11 is slidably connected to the slide rails 111, a traverse pushing cylinder 112 is fixed on the workbench 1, an expansion rod of the traverse pushing cylinder 112 is parallel to the slide rails 111, the expansion rod of the traverse pushing cylinder 112 is fixed to the measurement platform 11, the measurement platform 11 is pushed by the traverse pushing cylinder 112 to slide back and forth along the slide rails 111, the mounting bracket 2 is fixed on the workbench 1, the lifting cylinder 21 is vertically fixed downward on the mounting bracket 2, the translation cylinder 22 is fixed on the expansion rod of the lifting cylinder 21, the expansion rod of the translation cylinder 22 is perpendicular to the slide rails 111, the clamping jaw 24 corresponds to the detection base 5 one-to one, the mounting plate 23 is fixed on the expansion rod of the translation cylinder 22, and the clamping jaw 24 is fixed side by side on the mounting plate 23 and located above the detection base 5.

A lifting slide base 212 is arranged between the lifting cylinder 21 and the translation cylinder 22, a lifting convex strip 211 which is vertically arranged is arranged on the outer wall of a cylinder body of the lifting cylinder 21, a lifting sliding groove is formed in the lifting slide base 212, the lifting slide base 212 is attached to the outer wall of the cylinder body of the lifting cylinder 21, the lifting convex strip 211 is clamped into the lifting sliding groove and can slide relative to the lifting sliding groove, the translation cylinder 22 is fixed at the lower end of the lifting slide base 212, a vertically-raised first connecting block part 213 is arranged on the lifting slide base 212, and a telescopic rod of the lifting cylinder 21 is fixed with the first connecting block part 213. The lifting air cylinder 21 drives the lifting slide seat 212 to move up and down, so that the translation air cylinder 22 moves up and down, and the clamping jaw 24 moves up and down.

The lower end of the lifting slide 212 is fixed with a mounting flat plate 214, an L-shaped reinforcing plate 215 is fixed on the mounting flat plate 214, one side of the reinforcing plate 215 is attached and fixed to the lifting slide 212, the other side of the reinforcing plate 215 is attached and fixed to the mounting flat plate 214, and the translation cylinder 22 is fixed on the lower side of the mounting flat plate 214.

A translation sliding seat 226 is arranged between the translation cylinder 22 and the mounting plate 23, an expansion link of the translation cylinder 22 is connected with the translation sliding seat 226, a translation sliding slot 227 is formed in the mounting plate 23, a translation protruding strip 221 is arranged on the bottom surface of the cylinder body of the translation cylinder 22, the translation protruding strip 221 is clamped into the translation sliding slot 227 and can slide relative to the translation sliding slot 227, a limiting block 223 is fixed on the side surface of the cylinder body of the translation cylinder 22, a positioning through slot 224 is formed in one side, facing the translation sliding seat 226, of the limiting block 223, a positioning through slot 224 is clamped into the side surface of the translation sliding seat 226, and the mounting plate 23 is fixed below the translation sliding seat 226. The upper and lower edges of the side surface of the translational sliding seat 226 are both provided with positioning chamfers 228, and the groove walls of both sides of the positioning through groove 224 are both positioning inclined surfaces 225 capable of abutting against the positioning chamfers 228. One end of the translational sliding seat 226 is provided with a second connecting block portion 229 which is vertically protruded, the second connecting block portion 229 is provided with a bayonet 229a, the bayonet 229a is U-shaped, the inner wall of the bayonet 229a is protruded to form a limiting strip matched with the shape of the bayonet 229a, the end of the telescopic rod of the translational air cylinder 22 is fixed with two clamping pieces 222, and the limiting strip is clamped between the two clamping pieces 222.

The clamping jaw 24 comprises a finger cylinder 241 and two clamping heads 242, the two clamping heads 242 are respectively fixed on the cylinder arm of the finger cylinder 241, and the opposite side surfaces of the two clamping heads 242 are provided with embedded grooves 243.

As shown in fig. 1 to 3 and 6, the length detection device includes an upper distance sensor 3 and a lower distance sensor 31, the lower distance sensor 31 is fixed on the measuring table 11, and a shaft core 51 corresponding to the detection base 5 is located directly above the lower distance sensor 31, and the upper distance sensor 3 is fixed on the table 1 and can move directly below the upper distance sensor 3 corresponding to the shaft core 51 of the detection base 5. The upper distance sensor 3 and the lower distance sensor 31 are respectively contacted with the upper end surface and the lower end surface of the shaft, and the positions among the upper distance sensor 3, the lower distance sensor 31 and the shaft core 51 are determined, so that the length of a section with a larger shaft diameter can be detected by the upper distance sensor 3, and the length of a section with a smaller shaft diameter can be detected by the lower distance sensor 31; during detection, the rotating structure drives the shaft core 51 to rotate, so that the shaft can also rotate, the upper distance sensor 3 can be respectively contacted with different positions of the upper end surface of the shaft, the lower distance sensor 31 can be respectively contacted with different positions of the lower end surface of the shaft, and the lengths of a section with a larger shaft diameter and a section with a smaller shaft diameter can be accurately obtained through measurement of a plurality of positions; preferably, the upper distance sensor 3 and the lower distance sensor 31 in the present application are sensors of type GT2-a50, which are existing products.

As shown in fig. 1 to 3 and 6, the inner hole detection device includes a detection air pump and an air tightness measuring instrument 4, a lifting frame 41 is arranged on the workbench 1, two pneumatic measuring heads 42 which are vertically and upwards arranged are fixed on the lifting frame 41, the lifting frame 41 can drive the two pneumatic measuring heads 42 to move up and down, the two pneumatic measuring heads 42 can be respectively located under two shaft cores 51 corresponding to the two detection bases 5, the detection air pump is connected with the air tightness measuring instrument 4 through an air pipe, and the air tightness measuring instrument 4 is respectively connected with the two pneumatic measuring heads 42 through the air pipe. The pneumatic side head is lifted by the lifting frame 41 and penetrates into the inner hole of the shaft, meanwhile, the air pump is detected to be inflated, and airflow enters the inner hole through the pneumatic measuring head 42 after passing through the air tightness measuring instrument 4; because the pneumatic gauge head 42 does not necessarily lie in the axis of axle when penetrating the hole of axle, consequently through the axis of rotation when detecting between the inner wall that makes the axle hole and the pneumatic side head dynamic change, airtight measuring apparatu 4 can detect the pressure change of following the pneumatic gauge head 42 outflow gas to compare with the value of prestoring on sending data to the computer, if the data is in the scope of prestoring the value then the hole size of axle satisfies the requirement, if the data is outside the scope of prestoring the value then the hole size of axle is unqualified, carry out twice detection through the hole of two sets of detection bases 5 axles, guarantee the precision of detecting.

As shown in fig. 1, 2 and 6, the lifting frame 41 includes a detection lifting cylinder 411, a detection lifting slide 412 and a measuring head mounting plate 413, the detection lifting cylinder 411 is fixed on the measuring table 11, a telescopic rod of the detection lifting cylinder 411 is fixed with the detection lifting slide 412, a detection lifting guide bar with a vertical arrangement is arranged on a cylinder body of the detection lifting cylinder 411, a detection lifting through groove is formed on the detection lifting slide 412, the detection lifting guide bar is clamped into the detection lifting through groove and can relatively detect the sliding of the lifting through groove, and the measuring head mounting plate 413 is fixed on the detection lifting slide 412. Detect lift cylinder 411 and be two pole cylinders, two telescopic links that detect lift cylinder 411 are fixed with detection lift slide 412, and two pole cylinders can make and detect lift slide 412 and reciprocate more stably. Detect and be fixed with fixing base 414 on the cylinder body of lift cylinder 411, be fixed with the sensor on the fixing base 414, the probe of sensor can support with fixing base 414 and lean on. The sensor can be triggered on the return stroke of the fixed seat 414.

As shown in fig. 1, 2 and 6, the mounting bracket 2 is fixed with positioning cylinders 43 corresponding to the two detection bases 5 for detecting the shaft inner holes one by one, the telescopic rods of the positioning cylinders 43 are vertically arranged downwards and located right above the corresponding shaft cores 51, the telescopic rods of the positioning cylinders 43 are fixed with positioning heads 44, and the lower ends of the positioning heads 44 are provided with convex balls. When in detection, the ball of the positioning head 44 is abutted against the upper end of the shaft through the positioning air cylinder 43, so that the shaft is fixedly abutted against the shaft core 51.

As shown in fig. 1 to 3 and fig. 6 and 10, the rotating structure includes a driving motor 59 and a belt 592, the detection base 5 includes a bearing seat 52 fixed to the measuring table 11, an upper bearing 53 and a lower bearing 54 rotatably connected in the bearing seat 52, the shaft core 51 is inserted and positioned in an inner ring of the upper bearing 53, a pulley shaft 55 is inserted and positioned in an inner ring of the lower bearing 54, a relief gap 553 is provided between the shaft core 51 and the pulley shaft 55, the pulley shaft 55 and the shaft core 51 are positioned in a circumferential direction and the pulley shaft 55 is capable of moving axially relative to the shaft core 51, a lower end of the pulley shaft 55 penetrates through the bearing seat 52 and is fixedly connected with a driven pulley 554, the driven pulley 554 has an annular guide convex ring 557 protruding upward, the guide convex ring 557 penetrates into the bearing seat 52, the driven pulley 554 has a relief gap 558 with a lower end surface of the bearing seat 52, the driving motor 59 is fixed on the measuring table 11, a rotating shaft of the driving motor 59 is fixed with a driving pulley 591, and the three driven pulleys 554 are connected by the tensioned belt 592. The shaft core 51 and the pulley shaft 55 are rotatably connected in the bearing seat 52 through the upper bearing 53 and the lower bearing 54 respectively, the connecting structures between the shaft core 51 and the pulley shaft 55 and the bearing seat 52 are mutually independent, the shaft core 51 and the pulley shaft 55 are only positioned in the circumferential direction, the belt 592 drives the driven pulley 554 to rotate, the driven pulley 554 can drive the pulley shaft 55 to float up and down, a space which floats up and down is formed between the pulley shaft 55 and the shaft core 51 due to the first yielding gap 553, a space which floats up and down is formed between the driven pulley 554 and the bearing seat 52 due to the second yielding gap 558, and the shaft core 51 is not connected with the pulley shaft 55 in the axial direction, so that the up-and-down floating of the driven pulley 592 and the pulley shaft 55 cannot cause vibration or movement of the shaft core 51 or the bearing seat 52, and a shaft to be detected which is positioned on the shaft core 51 cannot be influenced, and the precision and accuracy of shaft detection can be ensured; the belt 592 drives the driven pulleys 554 to rotate, synchronous detection of the detection bases 5 can be achieved, the structure is compact, and detection efficiency is high.

As shown in fig. 10, at least two insertion holes are formed in the lower end surface of the shaft core 51, the upper end surface of the pulley shaft 55 is provided with protruding insertion rods 552 corresponding to the insertion holes one by one, an abdicating gap 553 is formed between the lower end surface of the shaft core 51 and the upper end surface of the pulley shaft 55, the insertion rods 552 can be inserted into the corresponding insertion holes, and the insertion rods 552 can move axially relative to the insertion holes. The shaft core 51 and the pulley shaft 55 rotate synchronously through the matching of the plug rod 552 and the plug hole. The lower end peripheral surface of the shaft core 51 is provided with a convex first convex ring 512, the insertion hole is arranged on the lower end surface of the convex first convex ring 512, the upper end peripheral surface of the belt pulley shaft 55 is provided with a convex second convex ring 551, and the insertion rod 552 is arranged on the upper end surface of the convex second convex ring 551.

The bearing seat 52 comprises an upper bearing seat 521 and a lower bearing seat 523, the upper bearing seat 521 is fixed with the measuring table 11 through bolts, the lower bearing seat 523 is fixed on the lower bottom surface of the lower bearing seat 523, an upper abutting convex edge 522 is arranged at the position, close to the lower end, of an inner hole of the upper bearing seat 521, the outer ring of the upper bearing 53 abuts against the upper abutting convex edge 522, a lower abutting convex edge 524 is arranged at the position, close to the lower end, of the inner hole of the lower bearing seat 523, and an outer ring of the lower bearing 54 abuts against the lower abutting convex edge 524.

The shaft core 51 is provided with an upper through hole 511, the pulley shaft 55 is provided with a lower through hole 559, the diameter of the lower through hole 559 is larger than that of the upper through hole 511, the upper through hole 511 of the shaft core 51 is communicated with the lower through hole 559 of the pulley shaft 55, and the middle part of the driven pulley 554 is provided with a position-avoiding through hole 555 communicated with the lower through hole 559.

The lower end of the abdicating through hole 555 of the driven pulley 554 is provided with a positioning convex edge 556, the pulley shaft 55 is inserted into the abdicating through hole 555 and is abutted against the positioning convex edge 556, and the pulley shaft 55 is fixed with the positioning convex edge 556 through a bolt.

An end cover 56 is fixed on the upper end face of the bearing seat 52, an abdicating hole is formed in the middle of the end cover 56, a reference panel 57 is fixed on the upper end face of the shaft core 51, a reference convex surface 571 is formed on the upper plate surface of the reference panel 57, a reference convex ring 572 is formed on the lower plate surface of the reference panel 57, the reference convex ring 572 passes through the abdicating hole to be attached and fixed to the upper end face of the shaft core 51, and the lower plate surface of the reference panel 57 is attached to the end cover 56. The inspection base 5 has three, and the driven pulleys 554 have three and are arranged side by side, and the belt 592 abuts with the outside of the driven pulleys 554 located on both sides away from the measurement table 11 and with the inside of the driven pulley 554 located in the middle near the measurement table 11.

The rotation fixing bracket 58 is fixed on the measuring table 11, the driving motor 59 is fixed on the rotation fixing bracket 58, a strip-shaped through hole 113 is formed on the measuring table 11, and the belt 592 passes through the through hole 113.

As shown in fig. 1 to 5, the automatic feeding device includes a push-pull plate 62, a hopper 6 is provided with a downward elongated discharge opening 6a, the push-pull plate 62 is located between the workbench 1 and the hopper 6, and the push-pull plate 62 can move back and forth along the front-rear direction, a feeding through groove 621 capable of accommodating only one shaft is formed in the middle of the push-pull plate 62, an upper notch of the feeding through groove 621 can be aligned with the discharge opening 6a, a pushing support 63 is further fixed on the workbench 1, the pushing support 63 is located at the rear portion of the hopper 6, a pushing block 65 capable of sliding and sliding from one end of the feeding through groove 621 to the other end is arranged on the pushing support 63, and the other end of the feeding through groove 621 can be aligned with the feeding reversing sleeve 12 in a horizontal state. A shaft to be detected is placed in the hopper 6, the push-pull plate 62 is pushed to move forwards until the feeding through groove 621 of the push-pull plate 62 is aligned with the discharging opening 6a, at the moment, the shaft in the hopper 6 at the discharging opening 6a falls into the feeding through groove 621, the push-pull plate 62 is retracted, the push-pull plate 62 moves backwards to draw out the shaft in the feeding through groove 621, at the moment, the upper plate surface of the push-pull plate 62 is aligned with the discharging opening 6a, the shaft is prevented from falling out of the hopper 6, when the push-pull plate 62 moves to enable the ejector block 65 to be aligned with the feeding through groove 621, the push-pull plate stops moving, at the moment, the feeding through groove 621 is aligned with the feeding reversing sleeve 12, the ejector block 65 slides and pushes the shaft in the feeding through groove 621 to move towards the feeding reversing sleeve 12 until the shaft is inserted into the feeding reversing sleeve 12, and the automatic feeding of the shaft is realized in a reciprocating manner; the push-pull plate 62 with the feeding through groove 621 moves back and forth to ensure that only one shaft is drawn out at each time, and the shaft is pushed to the feeding reversing sleeve 12 through the material pushing block 65, so that the structure is simple, and continuous feeding of the shaft can be ensured.

The material pushing support 63 comprises a portal frame and a first sliding rail 632 fixed on the portal frame, the first sliding rail 632 is parallel to the feeding through groove 621, the first sliding rail 632 is connected with a blanking sliding block 64 in a sliding mode, a driving source capable of pushing the blanking sliding block 64 to slide back and forth is arranged on the portal frame, and the material pushing block 65 is fixed with the blanking sliding block 64. The driving source can be a motor or an air cylinder, the first sliding rail 632 slides back and forth to drive the ejector block 65 to move back and forth, when the push-pull plate 62 moves back, the feeding through groove 621 is internally provided with a shaft, the ejector block 65 is located at one end of the feeding through groove 621, the ejector block 65 moves towards the other end of the feeding through groove 621, in the process, the ejector block 65 can abut against one end of the shaft and push the shaft to move, and finally the shaft is pushed into the feeding reversing sleeve 12.

The blanking sliding block 64 is fixed with a fixed sheet metal part 641, the lower end of the fixed sheet metal part 641 is provided with a fixed part 642, the ejector block 65 is cylindrical, one end of the ejector block 65 is provided with a positioning step, the fixed part 642 is embedded into the positioning step of the ejector block 65 and fixed with the ejector block 65 through a bolt, and the other end of the ejector block 65 is an ejector end face. The ejector block 65 is made of brass or plastic. The hardness of brass and plastic is low, so that damage to the shaft during material ejection is avoided; brass is not easy to wear and has long service life, which is the preferred scheme.

The hopper 6 comprises two side plates 61 arranged in parallel, a rear baffle 611 and an inclined plate 612 which are fixed between the two side plates 61, the lower ends of the two side plates 61 are fixed with the workbench 1, the rear baffle 611 is arranged vertically, a gap is arranged between the lower end of the rear baffle 611 and the workbench 1, the inclined plate 612 inclines along the vertical direction, a gap is arranged between the lower end of the inclined plate 612 and the workbench 1, and the lower end of the inclined plate 612 and the lower end of the rear baffle 611 form the feed opening 6a. And the inner side surfaces of the two side plates 61 are fixed with a protection plate 613, and the protection plate 613 is made of plastics.

The width of the feeding opening 6a is at least twice as large as that of the feeding through groove 621. The dead condition of card between feed opening 6a between axle and the axle has been avoided, has guaranteed that a axle must get into the logical inslot of material loading 621 when feed opening 6a and the logical groove 621 of material loading align. The distance between the upper end surface of the push-pull plate 62 and the baffle plate and the inclined plate 612 is smaller than the width of the feeding through groove 621. The shaft can be prevented from entering the space between the push-pull plate 62 and the baffle and sloping plate 612 when the push-pull plate 62 moves back and forth, ensuring that only one shaft can be pulled out of the push-pull plate 62 each time. The upper edges of the push-pull plate 62 on both sides of the loading through slot 621 are provided with guide chamfers 622. Two sliding rails II 66 are fixed on the workbench 1 along the front-back direction, the push-pull plate 62 is connected to the sliding rails II 66 in a sliding mode, and a feeding pushing cylinder 67 capable of pushing the push-pull plate 62 to move back and forth is fixed on the workbench 1.

As shown in fig. 2, the automatic discharging device includes a clamping arm 75 fixed on the workbench 1, a discharging support 71 is fixed on the workbench 1, a discharging guide rail 72 horizontally arranged is fixed on the discharging support 71, the magazine 7 is located under the discharging guide rail 72, and two ends of the discharging guide rail 72 are located outside the magazine 7, a sliding seat 73 is slidably connected on the discharging guide rail 72, a discharging lifting cylinder 74 is vertically fixed on the sliding seat 73, a telescopic rod of the discharging lifting cylinder 74 is arranged downward, and the clamping arm 75 is fixed on the telescopic rod of the discharging lifting cylinder 74. Shaft detection equipment has ejection of compact switching-over sleeve 121, and the axle that ejection of compact switching-over sleeve 121 will detect the completion rotates to horizontal position, presss from both sides the axle through arm lock 75 this moment, and ejection of compact switching-over sleeve 121 retreats and makes the axle withdraw from in ejection of compact switching-over sleeve 121, and rethread slide 73 will accompany the arm lock 75 of axle and move to magazine 7 top to make arm lock 75 descend through ejection of compact lift cylinder 74 and place the axle in magazine 7, how to reciprocate to realize automatic discharging.

During detection, a plurality of shafts to be detected are placed in the hopper 6, the shafts are pulled out of the hopper 6 one by one through the push-pull plate 62, the pulled shafts are pushed to the feeding reversing sleeve 12 through the ejector block 65, at the moment, the feeding reversing sleeve 12 is aligned with the feeding through groove 621 of the push-pull plate 62, the shafts are inserted into the feeding reversing sleeve 12, the feeding reversing sleeve 12 is rotated to a vertical position through the motor, the shafts are vertically arranged, the measuring table 11 is transversely moved to one side of the material box 7 through the transverse moving pushing cylinder 112, the shafts vertically arranged on the feeding reversing sleeve 12 move to be right below the clamping jaws 24 close to the hopper 6, the clamping jaws 24 clamp the shafts and pull the shafts out of the feeding reversing sleeve 12, the measuring table 11 is moved back to an initial position, at the moment, the shafts on the clamping jaws 24 close to the hopper 6 are positioned right above the detection base 5 close to the hopper 6, the clamping jaws 24 are axially inserted into the detection base 5, and at the same time, the lifting frame 41 extends the pneumatic measuring head 42 into the inner hole of the shaft for detection, the clamping jaw 24 extracts the shaft from the detection base 5 after the detection is finished, the shaft is inserted into the second detection base 5 for pneumatic detection through the back and forth movement of the measuring table 11, the shaft is inserted into the third detection base 5 through the matching of the clamping jaw 24 and the measuring table 11 after the size of the inner hole is detected twice, the length of the shaft is detected through the upper distance sensor 3 and the lower distance sensor 31, the shaft rotates along with the detection base 5 in the detection process, the shaft is inserted into the discharging reversing sleeve 121 through the matching of the clamping jaw 24 and the measuring table 11 after the detection is finished, the discharging reversing sleeve 121 rotates to enable the shaft to be horizontal, then the shaft is clamped through the clamping arm 75, the shaft is extracted from the discharging reversing sleeve 121 through the retraction of the measuring table 11, the clamping arm 75 puts the shaft into the material box 7 for recovery, completing the detection of the shaft; the detection process is carried out in a flow line mode, and therefore shafts are arranged in the three detection bases 5 when detection is carried out at each time, and therefore detection efficiency is high.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The length of the shaft and the size of the inner hole of the detection equipment comprise a workbench and are characterized in that a measuring table capable of sliding left and right along the workbench is arranged in the middle of the workbench, three detection bases arranged side by side are arranged on the measuring table, a shaft core for positioning the shaft is connected in the detection bases in a rotating mode, the shaft core is vertically arranged, the shaft core of the three detection bases can rotate synchronously through a rotating structure, a feeding reversing sleeve and a discharging reversing sleeve are respectively and rotatably arranged at two ends of the three detection bases on the measuring table, the feeding reversing sleeve and the discharging reversing sleeve can rotate to a horizontal state or a vertical state, an automatic feeding device capable of automatically and sequentially inserting the shaft in the hopper to the feeding reversing sleeve in the horizontal state after the shaft sequentially passes through the three detection bases is arranged on the workbench, a material box is arranged on one side of the workbench close to the feeding reversing sleeve, a hopper capable of automatically and sequentially inserting the shaft in the hopper to the feeding reversing sleeve in the horizontal state is arranged on the workbench, a material feeding device capable of automatically and sequentially inserting the shaft in the hopper to the discharging reversing sleeve is arranged on one side of the workbench, a material detection base capable of automatically and detecting the length of detecting the shaft size of the detection bases and the discharging sleeve, and two detection bases capable of detecting the length of the discharging sleeve and the detection bases corresponding to the detection bases are arranged on the workbench, and the detection bases; the rotating structure comprises a driving motor and a belt, the detection base comprises a bearing seat fixed with the measuring table, an upper bearing and a lower bearing which are rotatably connected in the bearing seat, a shaft core is inserted and positioned in an inner ring of the upper bearing, a pulley shaft is inserted and connected in an inner ring of the lower bearing, a first abdicating gap is formed between the shaft core and the pulley shaft, the pulley shaft and the shaft core are positioned in the circumferential direction, the pulley shaft can move axially relative to the shaft core, the lower end of the pulley shaft penetrates through the bearing seat and is fixedly connected with a driven pulley, a second abdicating gap is formed between the driven pulley and the lower end surface of the bearing seat, the driving motor is fixed on the measuring table, a driving pulley is fixed on a rotating shaft of the driving motor, and the driving pulley is connected with the three driven pulleys through tensioned belts; the lower end surface of the shaft core is provided with at least two jacks, and the upper end surface of the belt pulley shaft is provided with convex plug-in rods which correspond to the jacks one by one; the shaft core is provided with an upper through hole, the belt pulley shaft is provided with a lower through hole, the diameter of the lower through hole is larger than that of the upper through hole, the upper through hole of the shaft core is communicated with the lower through hole of the belt pulley shaft, and the middle part of the driven pulley is provided with a yielding through hole communicated with the lower through hole.

2. The apparatus of claim 1, wherein the length detection device comprises an upper distance sensor and a lower distance sensor, the lower distance sensor is fixed on the measuring table, the axis corresponding to the detection base is located right above the lower distance sensor, the upper distance sensor is fixed on the workbench, and the axis corresponding to the detection base can move to a position right below the upper distance sensor.

3. The apparatus according to claim 1, wherein the inner bore detection device comprises a detection air pump and an air tightness measuring instrument, the worktable is provided with a lifting frame, the lifting frame is fixed with two pneumatic measuring heads vertically and upwards and can drive the two pneumatic measuring heads to move up and down, the two pneumatic measuring heads can be respectively positioned under two shaft cores corresponding to the two detection bases, the detection air pump is connected with the air tightness measuring instrument through an air pipe, and the air tightness measuring instrument is respectively connected with the two pneumatic measuring heads through the air pipe.

4. The shaft length and inner bore size detection equipment according to claim 1, wherein the station transfer device comprises a mounting bracket, a lifting cylinder, a translation cylinder and a clamping jaw, the mounting bracket is fixed on the workbench, the lifting cylinder is vertically fixed on the mounting bracket downwards, the translation cylinder is fixed on a telescopic rod of the lifting cylinder, the telescopic rod of the translation cylinder is perpendicular to the sliding rail, the clamping jaws correspond to the detection bases one by one, a mounting plate is fixed on the telescopic rod of the translation cylinder, and the clamping jaws are fixed on the mounting plate side by side and located above the detection bases.

5. The apparatus according to claim 1, wherein the automatic feeding device comprises a push-pull plate, the hopper has a downward elongated discharge opening, the push-pull plate is located between the workbench and the hopper and can move back and forth along a front-rear direction, a feeding through groove capable of accommodating only one shaft is formed in the middle of the push-pull plate, an upper notch of the feeding through groove can be aligned with the discharge opening, the workbench is further fixed with a pushing support, the pushing support is located at the rear portion of the hopper, a material ejecting block capable of sliding and sliding from one end of the feeding through groove to the other end is arranged on the pushing support, and the other end of the feeding through groove can be aligned with the feeding reversing sleeve in a horizontal state.

6. The shaft length and inner bore size detection device according to claim 1, wherein the automatic discharging device comprises a clamping arm fixed on a workbench, a discharging support is fixed on the workbench, a horizontally arranged discharging guide rail is fixed on the discharging support, the magazine is located right below the discharging guide rail, both ends of the discharging guide rail are located outside the magazine, a slide seat is slidably connected to the discharging guide rail, a discharging lifting cylinder is vertically fixed on the slide seat, a telescopic rod of the discharging lifting cylinder is arranged downwards, and the clamping arm is fixed on a telescopic rod of the discharging lifting cylinder.