CN113358074A

CN113358074A - Device for measuring size of inner ball of differential shell

Info

Publication number: CN113358074A
Application number: CN202110653042.5A
Authority: CN
Inventors: 郑双飞
Original assignee: Wuxi Vgage Measuring Equipment Co ltd
Current assignee: Wuxi Wannaite Automation Equipment Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-07
Anticipated expiration: 2041-06-11
Also published as: CN113358074B

Abstract

The invention relates to the technical field of differential size measurement, in particular to a device for measuring the size of an inner ball of a differential shell. The device comprises a main support, wherein an upper measuring assembly is fixed on the upper part of the front end face of the main support, a lower measuring assembly is fixed on the lower part of the front end face of the main support, a measuring position is formed between the upper measuring assembly and the lower measuring assembly, and the upper measuring assembly and the lower measuring assembly can respectively extend into upper and lower cylindrical sections of a differential shell from upper and lower positioning and measure the cylindricity of the upper and lower cylindrical sections of the differential shell; an inner ball measuring head component is fixed on the rear end face of the main support and can measure the size of the inner spherical surface of the differential shell at the measuring position; two sides of the measuring position are symmetrically provided with two feeding assemblies respectively, and the feeding assemblies can convey the differential shell to a measuring station. The invention can realize the on-line measurement of the size of the spherical surface in the differential shell, reduces the dependence on three-coordinate measurement, reduces the detection cost and improves the detection efficiency.

Description

Device for measuring size of inner ball of differential shell

Technical Field

The invention relates to the technical field of differential size measurement, in particular to a device for measuring the size of an inner ball of a differential shell.

Background

The differential is an important part of the automobile and can enable the driving wheels to rotate at different rotating speeds. In four-wheel drive, all the wheels must be connected to drive four wheels, if the four wheels are mechanically connected, the vehicle cannot rotate at the same speed when the vehicle runs on a curve, and in order to make the curve running rotation speed of the vehicle substantially consistent, an intermediate differential is added to adjust the rotation speed difference between the front wheel and the rear wheel.

The size and the degree of positioning of the spherical surface within the differential case are important parameters. In the prior art, the size and the position degree of the inner spherical surface of the differential shell are generally detected through a special detection tool, but the existing special detection tool is not high in reliability, low in detection efficiency in actual operation and not suitable for mass production and field detection. The laboratory detects the size and the position degree of the inner spherical surface of the differential shell by three-coordinate detection, and the problem of low detection efficiency exists.

A novel measuring device is designed by a scheme of detecting the spherical diameter in a differential shell through three coordinates, so that online measurement is realized, the dependence on three-coordinate measurement is reduced, the detection cost is reduced, and the production efficiency is improved.

Disclosure of Invention

The applicant provides a device for measuring the size of the inner ball of the differential shell aiming at the defects in the prior art, so that the size of the inner ball of the differential shell can be measured on line, the dependence on three-coordinate measurement is reduced, the detection cost is reduced, and the detection efficiency is improved.

The technical scheme adopted by the invention is as follows:

the device for measuring the size of the inner ball of the differential shell comprises a main support, wherein an upper measuring assembly is fixed on the upper part of the front end face of the main support, a lower measuring assembly is fixed on the lower part of the front end face of the main support, a measuring position is formed between the upper measuring assembly and the lower measuring assembly, and the upper measuring assembly and the lower measuring assembly can respectively extend into upper and lower cylindrical sections of the differential shell from upper and lower positions and measure the cylindricity of the upper and lower cylindrical sections of the differential shell; the first hole measuring assembly and the second hole measuring assembly are respectively fixed on the left side and the right side of the front end face of the main support and positioned on the left side and the right side of a measuring position, and can respectively extend into a pin shaft hole of the differential shell from left to right and measure the diameter of the pin shaft hole of the differential shell; an inner ball measuring head component is fixed on the rear end face of the main support and can measure the size of the inner spherical surface of the differential shell at the measuring position; and the two sides of the measuring position are respectively and symmetrically provided with a feeding assembly, and the feeding assemblies can convey the differential shell to a measuring station.

Further, the feeding assembly comprises a fixed bottom plate, the lower end face of the fixed bottom plate is connected with a fixed upright post, the lower end of the fixed upright post is welded with a fixed base, a feeding guide rail is arranged on the fixed bottom plate along the length direction, the feeding guide rail is connected with a feeding chassis in a sliding manner through a sliding block, the feeding chassis is connected with a feeding positioning plate through a detachable connecting piece, a workpiece positioning hole is arranged on the feeding positioning plate, the edge of the workpiece positioning hole is detachably connected with a plurality of feeding positioning blocks used for supporting the differential mechanism shell together through the connecting piece, any two feeding positioning blocks in the plurality of feeding positioning blocks are connected with a workpiece proximity switch through threads, the detection end face of the workpiece proximity switch is flush with the upper end face of the feeding positioning block, the fixed bottom plate is detachably connected with a feeding cylinder support through the connecting piece, a feeding cylinder is fixed on the feeding cylinder support, and the driving end of the feeding cylinder is connected with a cylinder pushing frame, the cylinder pushing frame is detachably connected with the feeding underframe through a connecting piece; a first feeding proximity switch and a second feeding proximity switch are respectively arranged on one side of a moving path of the feeding positioning plate, the first feeding proximity switch is connected to a first feeding proximity switch bracket, the first feeding proximity switch bracket is detachably connected to the fixed bottom plate through a connecting piece, the second feeding proximity switch is connected to a second feeding proximity switch bracket, and the second feeding proximity switch bracket is detachably connected to the fixed bottom plate through a connecting piece;

furthermore, the feeding chassis is detachably connected with the positioning assembly through a connecting piece on one side, the two ends of the moving path of the positioning assembly are respectively provided with a limiting assembly, the positioning assembly and the limiting assemblies at the two ends of the moving path are matched to limit the moving stroke of the feeding chassis, the positioning assembly comprises a positioning support, the front end and the rear end of the positioning support are respectively connected with a first ball socket, the limiting assembly comprises a limiting support, a first ball head is connected onto the limiting support, the first ball socket of the positioning support can be in positioning connection with the first ball head of the limiting support, the limiting assembly further comprises a buffer connected onto the limiting support, and the buffer can contact with the positioning support of the positioning assembly.

Further, the upper measuring component comprises an upper measuring support, the upper part of the upper measuring support is connected with a cylinder mounting plate through a detachable connecting piece, the middle part of the cylinder mounting plate is connected with an upper measuring cylinder through a detachable connecting piece, the driving end of the upper measuring cylinder is connected with one end of a connector through a transition joint, the other end of the connector is connected with a mandrel, the lower end surface of the upper measuring support is connected with an upper measuring head shell through a detachable connecting piece, one end of the mandrel extends into the upper measuring head shell, a guide bush, a steel ball bush and a pressing sleeve are sequentially arranged between the inner surface of the upper measuring head shell and the outer surface of the mandrel from outside to inside, the left side and the right side of a shaft section of the mandrel extending into the upper measuring head shell are connected with a mini sensor through a detachable connecting piece, the lower end of the mini sensor is connected with a diamond gauge, a positioning ball is sleeved on the outer ring of the mandrel, and can extend into the differential shell to realize upper positioning, the left side and the right side of the tail end of a shaft section of the mandrel, which extends into the upper measuring head shell, are detachably connected with a second sensor through a connecting piece, the outer ring of the second sensor is provided with a pen-type sensor, the inside and the outside of the pen-type sensor are arranged on the upper measuring head shell in a penetrating way, the lower end of the upper measuring head shell is detachably connected with a lever through the connecting piece, one end of the lever extends into the upper measuring head shell and is connected with an end surface measuring device and a spring, one end of the spring is contacted with the inner side wall of the upper measuring head shell, the measuring head of the end surface measuring device is arranged towards the opening at the lower end of the upper measuring head shell, the outer side wall of the upper measuring head shell is fixedly provided with a sensor seat, a third sensor is arranged in the sensor seat, the measuring end of the third sensor is contacted with one end of the lever, a driven gear is arranged below the upper measuring support, one side of the upper measuring support is fixedly provided with an angle adjusting cylinder, the driving end of the angle adjusting cylinder is connected with a driving gear, and the driven gear is meshed with the driven gear, the inner ring of the driven gear is uniformly provided with a plurality of inner rollers, the outer surface of each inner roller is connected with the inner ring of the driven gear in a rolling manner, the center of each inner roller is connected with an inner roller shaft in a rotating manner, the inner roller shafts are fixed on the upper measuring support, the lower end surface of the driving gear is uniformly provided with a plurality of lower rollers, the outer surface of each lower roller is connected with the lower end surface of the driven gear in a rolling manner, the center of each lower roller is connected with a lower roller shaft in a rotating manner, the lower end surface of each lower roller shaft is fixed on the upper measuring support, the lower end surface of each driven gear is detachably connected with a driving support through a connecting piece, the driving support is provided with a clamping groove, the upper end and the lower end of the clamping groove are correspondingly provided with a slot, the lower end surface of the upper measuring support is detachably connected with a first air cylinder mounting plate through a connecting piece, a first air cylinder is fixed on the first air cylinder mounting plate, the driving end of the first air cylinder is connected with an air claw mounting plate, and two driving ends of the air claws are respectively connected with clamping jaws, the locating piece is held between two clamping jaws, and the locating piece lower extreme is connected the drive frame, and two actuating levers are connected to the drive frame front end, and two actuating levers can correspond and stretch into in the differential mechanism casing to drive the differential mechanism casing and rotate together, the locating piece can get into the draw-in groove of drive support, and the locating piece front end sets up the bolt, and the bolt can correspond and stretch into in the slot.

Further, the draw-in groove both sides set up locking Assembly respectively, the locating piece left and right sides sets up the fitting pin, when the locating piece got into the draw-in groove of drive support, the fitting pin got into locking Assembly and was locked by locking Assembly, locking Assembly is including rotating the limiting plate of connection at the drive support lateral wall, extension spring one end is passed through the connecting piece to limiting plate one end, the extension spring other end passes through the connecting piece and connects the drive support, the limiting plate sets up the locking draw-in groove towards bolt one side, the bolt can realize locking in the locking draw-in groove that slides in.

Further, the lower measuring component comprises a lower measuring fixing plate which is detachably connected to the main support through a connecting piece, two lower sliding rails which are parallel to each other are fixed on the lower measuring fixing plate, the two lower sliding rails are connected with a lower measuring head mounting frame in a sliding manner, the lower end of the lower measuring head mounting frame is connected with the driving end of a lower push cylinder, the lower push cylinder is fixed on a lower push cylinder support, the lower push cylinder support is detachably connected to the lower measuring fixing plate through a connecting piece, the lower measuring head mounting frame is connected with a lower measuring head component which comprises a lower measuring head outer shell, a lower measuring mandrel which can move up and down is arranged in the lower measuring head outer shell, the lower end of the lower measuring mandrel extends out of the lower measuring head outer shell and is connected with a floating spring shaft through a connecting sleeve, and the lower end of the floating spring shaft is connected with a first lower sensor clamping sleeve after passing through the floating frame, the first lower sensor is clamped in the first lower sensor clamping sleeve, the floating frame is connected with the lower measuring head mounting frame through the adjusting screws, the floating spring is sleeved on the floating spring shaft, the upper end of the floating spring is in contact with the step end face of the floating spring shaft, the lower end of the floating spring is in contact with the floating frame, the guide bush, the steel ball bush and the pressing sleeve are sequentially arranged between the inner surface of the lower measuring head shell and the outer surface of the lower measuring mandrel from outside to inside, the side face of the upper end of the lower measuring mandrel is connected with the third lower sensors, the middle part of the lower measuring head shell radially penetrates through the second lower sensors, one end of the lower measuring mandrel is connected with the second lower sensors, the lower measuring mandrel is sleeved with the lower positioning ball, and the lower positioning ball can extend into the differential shell.

Further, the proximity switch under fixed first proximity switch and the second respectively on the fixed plate is measured to the lower part, and proximity switch is located the last lower extreme of fixed plate motion route one side is measured to the lower part respectively under first proximity switch and the second, the fixed lower measuring head buffer of fixed plate lower part is measured to the lower part, and lower measuring head buffer is located lower measuring head mounting bracket removal route end, fixed lower measuring head locating plate in fixed plate upper portion of lower part, connect lower measuring head location ball socket on the lower measuring head locating plate, lower measuring head location ball socket is connected to lower measuring head mounting bracket upper end, and lower measuring head location ball socket can be connected with lower measuring head location ball socket location.

Further, the first hole measuring component comprises a first hole measuring installation seat, two first hole measuring slide rails which are parallel to each other are arranged on the first hole measuring installation seat, the two first hole measuring slide rails are connected with the first hole measuring installation seat in a sliding mode together, the rear end of the first hole measuring installation seat is connected with the driving end of a first hole measuring cylinder, the first hole measuring cylinder is fixed on the first hole measuring installation seat, third ball heads are arranged on the left side and the right side of the front end of the first hole measuring installation seat respectively, the front end of the first hole measuring installation seat is detachably connected with a first hole measuring positioning plate through a connecting piece, the left side and the right side of the first hole measuring positioning plate are respectively connected with a third ball socket, the third ball socket can be connected with the third ball head in a positioning mode, one end of the first hole measuring head is fixed on the first hole measuring installation seat, the other end of the first hole measuring sensor is sleeved with a first hole measuring sensor installation sleeve, a plurality of first hole measuring sensors which axially penetrate through are arranged on the first hole measuring sensor installation sleeve, the first hole measuring head front end is detachably connected with the elastic measuring head through a connecting piece, the measuring ends of the first hole measuring sensors are respectively contacted with the measuring ends of the elastic measuring head, the first hole measuring sensor mounting sleeve outer ring is provided with a first protective cover, and the first hole measuring head front end extends out of the first protective cover and is connected with the first hole measuring probes.

Further, the second hole measuring component comprises a second hole measuring installation seat, two second hole measuring slide rails which are parallel to each other are arranged on the second hole measuring installation seat, a second hole measuring head installation seat is connected to the two second hole measuring slide rails in a sliding mode, the rear end of the second hole measuring head installation seat is connected with the driving end of a second hole measuring cylinder, the second hole measuring cylinder is fixed on the second hole measuring installation seat, the left side and the right side of the front end of the second hole measuring head installation seat are respectively provided with a fourth ball head, the front end of the second hole measuring installation seat is detachably connected with a second hole measuring positioning plate through a connecting piece, the left side and the right side of the second hole measuring positioning plate are respectively connected with a fourth ball socket, the fourth ball socket can be connected with the fourth ball head in a positioning mode, a measuring head bushing is fixed at the front end of the second hole measuring head installation seat, a second hole measuring head is connected in the measuring head bushing in a sliding mode, and the rear end portion of the second hole measuring head is connected with the rear cover plate in a sliding mode, the spring is sleeved at the rear end of the second hole measuring head, the front end and the rear end of the spring are respectively contacted with the step end face of the second hole measuring head and the front end face of the rear cover plate, the second hole measuring sensor mounting sleeve is sleeved at the front end of the second hole measuring head, a plurality of second hole measuring sensors which axially penetrate through the spring are arranged on the first hole measuring sensor mounting sleeve, the front end of the second hole measuring head is connected with the second elastic measuring pin through a connecting piece in a detachable mode, the measuring ends of the second hole measuring sensors are respectively contacted with a plurality of measuring ends of the second elastic measuring pin, the outer ring of the second hole measuring sensor mounting sleeve is provided with a first protective cover, and the front end of the second hole measuring head extends out of the second protective cover and is connected with a plurality of second hole measuring elements.

Further, the inner ball measuring head component comprises an inner ball measuring mounting frame, the inner ball measuring mounting frame is detachably connected with a main support through a connecting piece, the upper end surface of the inner ball measuring mounting frame is provided with two inner ball measuring and adjusting slide rails which are parallel to each other along the length direction, the two adjusting slide rails are jointly and slidably connected with an inner ball measuring and adjusting seat, the lower end surface of the inner ball measuring mounting frame is fixedly provided with an adjusting driving air cylinder, the driving end of the adjusting driving air cylinder is connected with an air cylinder driving seat, the air cylinder driving seat is detachably connected with the lower end surface of the inner ball measuring and adjusting seat through the connecting piece, the two sides of the inner ball measuring and adjusting seat are respectively connected with an inner ball measuring buffer block, the front end and the rear end of the moving path of the inner ball measuring buffer block at the two sides of the inner ball measuring and adjusting seat are respectively provided with a buffer mounting block, the buffer mounting blocks are fixed on the upper end surface of the inner ball measuring mounting frame, the left side and the right side of one end of the inner ball measuring and adjusting seat are respectively provided with an inner ball measuring and positioning ball head, one end of each of the two inner ball measuring and adjusting slide rails is respectively fixed with an inner ball measuring and positioning block, an inner ball measuring and positioning ball head can be connected with the inner ball measuring and positioning block in a positioning way, the inner ball measuring and adjusting seat is connected with the shaft sleeve through a connecting piece which is detachable, the shaft sleeve is rotationally connected with a measuring head spindle, the tail end of the measuring head spindle is sleeved with a driven belt wheel, the upper part of the inner ball measuring and adjusting seat is fixed with a spindle driving motor, the driving end of the spindle driving motor is connected with a driving belt wheel, the driving belt wheel is connected with the driven belt wheel through a synchronous belt, the tail end of the measuring head spindle is connected with a belt wheel baffle through a connecting piece, the belt wheel baffle is positioned at one side of the driven belt wheel, the belt wheel baffle can prevent the driven belt wheel from falling off from the measuring head spindle, one side of the synchronous belt is provided with an idler wheel assembly, the idler wheel assembly can tightly press the synchronous belt, the idler wheel assembly comprises an idler wheel bushing connected to the side surface of the inner ball measuring and is rotationally connected with an idler mounting shaft in the idler bushing, one end of an idler mounting shaft extends out of an idler bushing and is fixedly connected with an idler support, a rotating shaft is fixed on the idler support, the rotating shaft is rotatably connected with an idler bearing, the idler bearing is in rolling connection with a synchronous belt, the front end of a measuring head main shaft is detachably connected with a ball measuring head base through a connecting piece, the upper end of the ball measuring head base is detachably connected with a measuring head pressing plate through a connecting piece, an inner ball measuring sensor mounting seat is arranged between the measuring head pressing plate and the ball measuring head base, the front end of the inner ball measuring sensor mounting seat extends out of the ball measuring head base, the front end of the inner ball measuring sensor mounting seat is provided with a sensor mounting end face with a circular arc structure, a plurality of inner ball measuring sensors are uniformly distributed on the sensor mounting end face, the front ends of the inner ball measuring sensors are connected with an inner ball measuring sensor, a compression spring is connected in the ball measuring head base, and one end of the compression spring compresses the inner ball measuring sensor mounting seat on the measuring head pressing plate, ball gauge head base upper end is connected through connecting piece detachable and is embraced the holder, it passes through location structure location connection to embrace holder and interior ball measurement sensor mount pad and embrace the holder, connect bulb location mount pad through connecting piece detachable on the interior ball measurement regulation seat, fixed bulb location cylinder mount pad on the bulb location mount pad, fixed bulb location cylinder on the bulb location cylinder mount pad, bulb location axle is connected to the drive end of bulb location cylinder, bulb location axle passes bulb location mount pad downwards and can stretch into bulb location flange's constant head tank, terminal surface before bulb location flange passes through connecting piece detachable connection measuring head main shaft, terminal surface fixed connection fore-set post cylinder mounting panel before the bulb location flange, fixed fore-set post cylinder on the fore-set post cylinder mounting panel, the bulb fore-set post cylinder drive end is connected the bulb fore-set post.

The invention has the following beneficial effects:

the invention can realize the on-line measurement of the size of the spherical surface in the differential shell, reduces the dependence on three-coordinate measurement, reduces the detection cost and improves the detection efficiency; the upper measuring component and the lower measuring component adopt a mechanical reference to pre-position the differential shell, establish an electronic reference, and arrange a high-precision digital sensor on the inner spherical surface, and the reference element and the measuring element accord with the establishment mode of three coordinates, thereby ensuring the comparison precision, solving the problem of non-replaceability of the three coordinates, saving a large amount of manpower while ensuring the measuring precision, and greatly improving the measuring efficiency; the invention can be integrated at the same time, realizes the measurement of other multiple size parameters and position parameters, can meet the detection of multiple important parameters of the differential shell, customizes the specific parameter content according to the measurement scheme requirements of customers, and enlarges the application range.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the feeding assembly of the present invention.

Fig. 3 is a structure diagram of the matching of the limiting component and the positioning component.

FIG. 4 is a perspective view of the upper measurement assembly of the present invention.

FIG. 5 is a front view of the upper measurement assembly of the present invention.

FIG. 6 is a bottom perspective view of the upper measurement assembly of the present invention.

Fig. 7 is a half-sectional view of the upper gauge head casing of the present invention.

FIG. 8 is a half sectional view of a third sensor and upper measurement assembly of the present invention.

Fig. 9 is a structural view of an angular adjustment mechanism of the present invention.

FIG. 10 is a front view of the lower measurement assembly of the present invention.

FIG. 11 is a side view of a lower measurement assembly of the present invention.

Fig. 12 is a sectional view taken along line a-a in fig. 11.

Fig. 13 is a cross-sectional view taken along line C-C of fig. 11.

FIG. 14 is a front view of a first bore measurement assembly and a second bore measurement assembly of the present invention.

FIG. 15 is a top view of a first bore measurement assembly and a second bore measurement assembly of the present invention.

Figure 16 is a half sectional view of the first orifice probe assembly and the second orifice probe assembly of the present invention.

FIG. 17 is a front view of an inner ball measurement assembly of the present invention.

Fig. 18 is a sectional view taken along line B-B in fig. 17.

FIG. 19 is a top view of an inner ball measurement assembly of the present invention.

FIG. 20 is a side view of an inner ball measurement assembly of the present invention.

Fig. 21 is a cross-sectional view taken along line D-D of fig. 20.

FIG. 22 is a view of a differential case structure measured in accordance with the present invention.

Wherein: 100. a feeding assembly; 101. fixing the bottom plate; 102. fixing the upright post; 103. a fixed base; 104. a feeding guide rail; 105. a feeding chassis; 106. a feeding positioning plate; 107. a feeding cylinder; 108. a feeding cylinder support; 109. a cylinder pushing frame; 110. a feeding positioning block; 111. a workpiece proximity switch; 112. a first feeding proximity switch; 113. a first feeding proximity switch bracket; 114. a second feeding proximity switch; 115. a second feeding proximity switch bracket; 116. a limiting component; 117. a positioning assembly; 118. a limiting bracket; 119. a first ball head; 120. a buffer; 121. positioning the bracket; 122. a first ball socket; 200. an upper measurement assembly; 201. an upper measurement mount; 202. an upper measurement cylinder; 203. a cylinder mounting plate; 204. a joint; 205. an upper probe housing; 206. an angle adjusting cylinder; 207. a drive gear; 208. a driven gear; 209. an inner roller; 210. a lower roller; 211. a mandrel; 212. a guide bush; 213. a steel ball bushing; 214. a compression sleeve; 215. a mini-sensor; 216. an upper positioning ball; 217. measuring by a diamond tester; 218. a second sensor; 219. a pen sensor; 220. a sensor seat; 221. a third sensor; 222. a lever; 223. a spring; 224. an end face detector; 225. a first cylinder mounting plate; 226. a first cylinder; 227. a pneumatic claw mounting plate; 228. a pneumatic claw; 229. a clamping jaw; 230. positioning blocks; 231. a driving frame; 232. a drive rod; 233. a drive bracket; 234. a limiting plate; 235. a tension spring; 236. a bolt; 237. a locking pin; 300. a lower measurement assembly; 301. a lower measurement fixing plate; 302. a lower push cylinder; 303. a lower slide rail; 304. a lower measuring head mounting frame; 305. a first lower proximity switch; 306. a second lower proximity switch; 307. a lower measurement head buffer; 308. a lower measuring head positioning plate; 309. a second ball head; 310. a second ball socket; 311. a lower head housing; 312. a lower measuring mandrel; 313. connecting sleeves; 314. a floating spring shaft; 315. a floating spring; 316. a floating frame; 317. adjusting the screw rod; 318. a first lower sensor; 319. a first lower sensor clamp sleeve; 320. a guide bush; 321. a steel ball bushing; 322. a compression sleeve; 323. a second lower sensor; 324. a lower tester; 325. a third lower sensor; 333. a lower positioning ball; 400. a first bore measurement assembly; 401. a first hole measurement mount; 402. a first bore measurement slide; 403. a first hole probe mounting base; 404. a first bore measurement cylinder; 405. a first bore probe; 406. a first shield; 407. a third ball head; 408. a third ball socket; 409. a first hole measuring positioning plate; 410. a first bore measurement sensor mounting sleeve; 411. a first bore measurement sensor; 412. an elastic probe; 413. a first pore measurement probe; 500. a second bore measurement assembly; 501. a second hole measurement mount; 502. a second bore measuring slide; 503 a second bore probe mount; 504. a second bore measurement cylinder; 505. a second hole probe; 506. a second shield; 507. a fourth ball head; 508. a fourth ball and socket; 509. a second hole measuring positioning plate; 510. a second bore measurement sensor mounting sleeve; 511. a second bore measurement sensor; 512. an elastic probe; 513. a second bore measurement pin; 514. a probe bushing; 515. a spring; 516. a rear cover plate; 600. a main support; 700. an inner ball probe assembly; 701. an inner ball measuring mounting rack; 702. an inner ball measuring and adjusting slide rail; 703. an inner ball measuring and adjusting seat; 704. an inner ball measuring buffer block; 705. a buffer mounting block; 706. adjusting a driving cylinder; 707. a cylinder driving seat; 708. an inner ball measuring and positioning ball head; 709. an inner ball measuring and positioning block; 710. measuring a head spindle; 711. a shaft sleeve; 712. a driven pulley; 713. a belt wheel baffle; 714. a spindle drive motor; 715. a synchronous belt; 716. a drive pulley; 717. an idler bushing; 718. an idler wheel mounting shaft; 719. an idler wheel bracket; 720. a rotating shaft; 721. an idler bearing; 722. a ball probe base; 723. an inner ball measuring sensor mounting seat; 724. an inner ball measurement sensor; 725. an inner ball measuring device; 726. a measuring head pressing plate; 727. a clamping seat is embraced; 728. a compression spring; 729. a ball head positioning cylinder; 730. a ball head positioning shaft; 731. a ball head positioning mounting seat; 732. a bulb positioning cylinder mounting seat; 733. a ball head positioning flange; 734. a ball head support; 735. a post jacking cylinder; 800. a differential housing; 810. an upper cylindrical section; 820. a lower cylindrical section; 830. a first pin shaft hole; 840. a second pin shaft hole; 850. the differential shell inner spherical surface.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

In the embodiment shown in fig. 1, the main support 600 is mainly comprised, the upper measuring assembly 200 is fixed on the upper portion of the front end surface of the main support 600, the lower measuring assembly 300 is fixed on the lower portion of the front end surface of the main support 600, and the measuring position is formed between the upper measuring assembly 200 and the lower measuring assembly 300.

In the embodiment shown in fig. 1, the first hole measuring unit 400 and the second hole measuring unit 500 are fixed to the left and right sides of the front end surface of the main support 600, respectively, and the first hole measuring unit 400 and the second hole measuring unit 500 are located on the left and right sides of the measuring position.

In the embodiment shown in fig. 1, the rear end surface of the main support 600 holds the inner ball probe assembly 700, and the inner ball probe assembly 700 is capable of measuring the size of the differential case inner spherical surface 850 at the measurement position.

In the embodiment shown in fig. 1, the feeding assemblies 100 are symmetrically disposed on both sides of the measuring position, and the feeding assemblies 100 can convey the differential case 800 to the measuring station. The arrangement of the double feeding assemblies 100 can greatly improve the measurement beat, realize on-line continuous measurement and improve the production efficiency. The differential housing 800 may be manually fed to achieve semi-automatic measurement, or may be fed by a truss manipulator or a joint robot to achieve full-automatic measurement. The adaptability of the equipment is improved, and the flexibility is better.

In the embodiment shown in fig. 2, the feeding assembly 100 includes a fixed base plate 101, a fixed upright 102 is connected to the lower end surface of the fixed base plate 101, and a fixed base 103 is welded to the lower end of the fixed upright 102. The fixed base plate 101 is provided with a feeding guide rail 104 along the length direction, the feeding guide rail 104 is connected with a feeding underframe 105 through a sliding block in a sliding manner, the feeding underframe 105 is connected with a feeding positioning plate 106 through a connecting piece in a detachable manner, the feeding positioning plate 106 is provided with a workpiece positioning hole, the edge of the workpiece positioning hole is detachably connected with a plurality of feeding positioning blocks 110 used for supporting the differential shell 800 together through the connecting piece, and the plurality of feeding positioning blocks 110 are uniformly distributed along the edge direction of the workpiece positioning hole.

In the embodiment shown in fig. 2, in order to accurately detect that the differential case 800 falls onto the plurality of loading positioning blocks 110, the workpiece proximity switch 111 is connected to any two loading positioning blocks 110 of the plurality of loading positioning blocks 110 through threads, and the detection end surface of the workpiece proximity switch 111 is flush with the upper end surface of the loading positioning block 110.

In the embodiment shown in fig. 2, in order to realize automatic feeding of the differential case 800, the fixed base plate 101 is detachably connected to the upper feeding cylinder bracket 108 through a connector, the feeding cylinder 107 is fixed to the feeding cylinder bracket 108, the driving end of the feeding cylinder 107 is connected to the cylinder pushing frame 109, and the cylinder pushing frame 109 is detachably connected to the upper feeding base frame 105 through a connector.

In the embodiment shown in fig. 2, a first feeding proximity switch 112 and a second feeding proximity switch 114 are respectively arranged on one side of the moving path of the feeding positioning plate 106, the first feeding proximity switch 112 is connected to a first feeding proximity switch bracket 113, the first feeding proximity switch bracket 113 is detachably connected to the fixed base plate 101 through a connecting piece, the second feeding proximity switch 114 is connected to a second feeding proximity switch bracket 115, and the second feeding proximity switch bracket 115 is detachably connected to the fixed base plate 101 through a connecting piece. When the feeding positioning plate 106 is located on one side of the first feeding proximity switch 112, the differential case 800 is placed into the feeding positioning plate 106, and when the feeding positioning plate 106 is located on one side of the second feeding proximity switch 114, the differential case 800 moves to the feeding position.

In the embodiment shown in fig. 2, one side of the loading chassis 105 is detachably connected with a positioning assembly 117 through a connector, two ends of a moving path of the positioning assembly 117 are respectively provided with a limiting assembly 116, and the positioning assembly 117 and the limiting assemblies 116 at two ends of the moving path cooperate to limit the moving stroke of the loading chassis 105.

In the embodiment shown in fig. 3, the positioning assembly 117 includes a positioning bracket 121, and the front and rear ends of the positioning bracket 121 are respectively connected to a first ball socket 122. The limiting assembly 116 comprises a limiting bracket 118, a first ball head 119 is connected to the limiting bracket 118, and a first ball socket 122 of the positioning bracket 121 can be connected with the first ball head 119 of the limiting bracket 118 in a positioning manner. The limiting assembly 116 further comprises a buffer 120 connected to the limiting bracket 118, and the buffer 120 can contact the positioning bracket 121 of the positioning assembly 117 to buffer the positioning assembly 117.

In the embodiment shown in fig. 4, the upper measuring assembly 200 comprises an upper measuring bracket 201, the upper part of the upper measuring bracket 201 is detachably connected with a cylinder mounting plate 203 through a connector, the middle part of the cylinder mounting plate 203 is detachably connected with an upper measuring cylinder 202 through a connector, the driving end of the upper measuring cylinder 202 is connected with one end of a connector 204 through a transition joint, and the other end of the connector 204 is connected with a mandrel 211. The lower end surface of the upper measuring support 201 is detachably connected with the upper measuring head shell 205 through a connecting piece.

In the embodiment shown in fig. 7 and 8, one end of the mandrel 211 extends into the upper gauge head casing 205, a guide bush 212, a steel ball bush 213 and a pressing bush 214 are sequentially arranged between the inner surface of the upper gauge head casing 205 and the outer surface of the mandrel 211 from outside to inside, the mandrel 211 extends into the left side and the right side of the shaft section of the upper gauge head casing 205 and is detachably connected with the mini-sensor 215 through a connecting piece, and the lower end of the mini-sensor 215 is connected with the diamond gauge 217. The outer ring of the mandrel 211 is sleeved with the positioning ball 216, and the upper positioning ball 216 can extend into the upper cylindrical section 810 of the differential shell to realize upper positioning. The spindle 211 extends into the left and right sides of the end of the shaft section of the upper measuring head shell 205 and is detachably connected with the second sensor 218 through a connecting piece. A pen-type sensor 219 is provided on the outer circumference of the second sensor 218, and the pen-type sensor 219 is provided on the upper gauge head case 205 so as to penetrate inside and outside. The lower end of the upper gauge head casing 205 is detachably connected with a lever 222 through a connecting piece, one end of the lever 222 extends into the upper gauge head casing 205 and is connected with an end surface gauge 224 and a spring 223, one end of the spring 223 contacts with the inner side wall of the upper gauge head casing 205, and the gauge head of the end surface gauge 224 faces the lower end opening of the upper gauge head casing 205. The outer side wall of the upper measuring head shell 205 is fixed with a sensor seat 220, a third sensor 221 is arranged in the sensor seat 220, and the measuring end of the third sensor 221 contacts one end of a lever 222.

In the embodiment shown in fig. 5 and 6, a driven gear 208 is arranged below the upper measuring bracket 201, an angle adjusting cylinder 206 is fixed on one side of the upper measuring bracket 201, the driving end of the angle adjusting cylinder 206 is connected with a driving gear 207, and the driving gear 207 is meshed with the driven gear 208. A plurality of inner rollers 209 are uniformly arranged on the inner ring of the driven gear 208, the outer surface of the inner roller 209 is connected with the inner ring of the driven gear 208 in a rolling manner, the center of the inner roller 209 is connected with an inner roller shaft in a rotating manner, and the inner roller shaft is fixed on the upper measuring bracket 201. The lower end face of the driving gear 207 is uniformly provided with a plurality of lower rollers 210, the outer surfaces of the plurality of lower rollers 210 are connected with the lower end face of the driven gear 208 in a rolling manner, the centers of the plurality of lower rollers 210 are connected with lower roller shafts in a rotating manner, and the lower roller shafts are fixed on the upper measuring support 201.

In the embodiment shown in fig. 6 and 9, the lower end surface of the driven gear 208 is detachably connected to the driving bracket 233 through a connector, and the driving bracket 233 is provided with a slot, and the upper end and the lower end of the slot are correspondingly provided with slots. The lower end face of the upper measuring support 201 is detachably connected with a first air cylinder mounting plate 225 through a connecting piece, a first air cylinder 226 is fixed on the first air cylinder mounting plate 225, the driving end of the first air cylinder 226 is connected with an air claw mounting plate 227, the lower end face of the air claw mounting plate 227 is connected with an air claw 228, two driving ends of the air claw 228 are respectively connected with a clamping jaw 229, a positioning block 230 is clamped between the two clamping jaws 229, the lower end of the positioning block 230 is connected with a driving frame 231, the front end of the driving frame 231 is connected with two driving rods 232, the two driving rods 232 can correspondingly stretch into the differential case 800, and therefore the differential case is driven to rotate together. The positioning block 230 can enter into a slot of the driving bracket 233, a latch 236 is arranged at the front end of the positioning block 230, and the latch 236 can correspondingly extend into the slot.

As shown in fig. 9, locking assemblies are respectively disposed at both sides of the locking groove, locking pins 237 are disposed at both left and right sides of the positioning block 230, and when the positioning block 230 enters the locking groove of the driving bracket 233, the locking pins 237 enter the locking assemblies and are locked by the locking assemblies. The locking assembly comprises a limiting plate 234 rotatably connected to the side wall of the driving bracket 233, one end of the limiting plate 234 is connected to one end of a tension spring 235 through a connecting piece, and the other end of the tension spring 235 is connected to the driving bracket 233 through a connecting piece. The limiting plate 234 is provided with a locking slot on one side facing the bolt 236, and the bolt 236 can slide into the locking slot to realize locking.

In the embodiment shown in fig. 10 and 11, the lower measurement assembly 300 includes a lower measurement fixing plate 301, the lower measurement fixing plate 301 is detachably connected to the main support 600 through a connector, two lower slide rails 303 parallel to each other are fixed on the lower measurement fixing plate 301, lower measurement head mounting frames 304 are slidably connected to the two lower slide rails 303, the lower ends of the lower measurement head mounting frames 304 are connected to the driving end of a lower push cylinder 302, the lower push cylinder 302 is fixed on the lower push cylinder support, and the lower push cylinder support is detachably connected to the lower measurement fixing plate 301 through a connector.

In the embodiment shown in fig. 10, a first lower proximity switch 305 and a second lower proximity switch 306 are fixed to the lower measurement fixing plate 301, respectively, and the first lower proximity switch 305 and the second lower proximity switch 306 are located at upper and lower ends of one side of the movement path of the lower measurement fixing plate 301, respectively.

In the embodiment shown in FIG. 10, the lower measurement fixing plate 301 has a lower fixed lower measurement head buffer 307, and the lower measurement head buffer 307 is located at the end of the moving path of the lower measurement head mounting frame 304.

In the embodiment shown in fig. 13, the lower measurement fixing plate 301 fixes the lower measurement head positioning plate 308 at the upper part, the second ball head 309 is connected to the lower measurement head positioning plate 308, the second ball socket 310 is connected to the upper end of the lower measurement head mounting bracket 304, and the second ball head 309 can be connected to the second ball socket 310 in a positioning manner.

In the embodiment shown in FIGS. 11 and 12, a lower head assembly is attached to the lower head mounting bracket 304. The lower measuring head assembly comprises a lower measuring head outer shell 311, a lower measuring mandrel 312 capable of moving up and down is arranged in the lower measuring head outer shell 311, the lower end of the lower measuring mandrel 312 extends out of the lower measuring head outer shell 311 and is connected with a floating spring shaft 314 through a connecting sleeve 313, the lower end of the floating spring shaft 314 penetrates through a floating frame 316 and then is connected with a first lower sensor clamping sleeve 319, and a first lower sensor 318 is clamped in the first lower sensor clamping sleeve 319. The floating frame 316 is connected with the lower measuring head mounting frame 304 through a plurality of adjusting screws 317, a floating spring 315 is sleeved on the floating spring shaft 314, the upper end of the floating spring 315 is contacted with the step end surface of the floating spring shaft 314, and the lower end of the floating spring 315 is contacted with the floating frame 316. A guide bush 320, a steel ball bush 321 and a pressing bush 322 are sequentially arranged between the inner surface of the lower measuring head outer shell 311 and the outer surface of the lower measuring mandrel 312 from outside to inside.

In the embodiment shown in fig. 12, the upper end of the lower measuring mandrel 312 is connected to a plurality of third lower sensors 325, the middle of the lower measuring head outer housing 311 is radially provided with a plurality of second lower sensors 323, and one end of the lower measuring mandrel 312 facing the plurality of second lower sensors 323 is connected to the lower measuring unit 324. The lower measuring mandrel 312 is sleeved with a lower positioning ball 333, and the lower positioning ball 333 can extend into a lower cylindrical section 820 of the differential case to realize the positioning of the lower end of the differential case.

The differential case 800 is measured with the positioning of the differential case 800 using a combination of mechanical datum positioning of the upper positioning ball 216 of the upper measurement assembly and the lower positioning ball 326 of the lower measurement assembly. After the measuring head of the upper measuring assembly and the measuring head of the lower measuring assembly are driven by the air cylinder to be matched, the upper positioning ball 216 and the lower positioning ball 326 enter the chamfering conical surface of the workpiece, the diameter of the outer circle is measured by the two groups of diamond measuring heads 216 and the two groups of lower measuring heads 324, and the cylindricity of the upper cylindrical section and the lower cylindrical section of the differential shell is calculated by different diameters of the outer circle. Thus, the upper and

lower measurement assemblies

200 and 300 are able to extend into and measure the cylindricity of the upper and lower cylindrical sections of the differential case from the upper and lower positions, respectively.

As shown in fig. 14 and 15, the first hole measuring assembly 400 includes a first hole measuring mounting base 401, two first hole measuring slide rails 402 parallel to each other are disposed on the first hole measuring mounting base 401, the two first hole measuring slide rails 402 are connected to a first hole measuring head mounting base 403 in a sliding manner, a driving end of a first hole measuring cylinder 404 is connected to a rear end of the first hole measuring head mounting base 403, and the first hole measuring cylinder 404 is fixed on the first hole measuring mounting base 401. The left side and the right side of the front end of the first hole measuring head mounting seat 403 are respectively provided with a third ball head 407, the front end of the first hole measuring mounting seat 401 is detachably connected with a first hole measuring positioning plate 409 through a connecting piece, the left side and the right side of the first hole measuring positioning plate 409 are respectively connected with a third ball socket 408, and the third ball socket 408 can be connected with the third ball head 407 in a positioning manner.

In the embodiment shown in fig. 16, one end of a first hole probe 405 is fixed to the first hole probe mounting base 403, a first hole measurement sensor mounting sleeve 410 is fitted over the other end of the first hole probe 405, and a plurality of first hole measurement sensors 411 that axially penetrate through the first hole measurement sensor mounting sleeve 410 are provided. The front end of the first hole measuring head 405 is detachably connected to the elastic measuring head 412 through a connector, and the measuring ends of the plurality of first hole measuring sensors 411 are respectively in contact with the plurality of measuring ends of the elastic measuring head 412. The first shroud 406 is disposed outside the first hole measuring sensor mounting sleeve 410, the front end of the first hole measuring head 405 extends out of the first shroud 406 and is connected to the plurality of first hole measuring probes 413, and the plurality of first hole measuring probes 413 are uniformly distributed along the circumferential direction. The first plurality of hole measurement probes 413 are capable of extending into the first pintle hole 830 of the differential housing.

As shown in fig. 14 and 15, the second hole measuring assembly 500 includes a second hole measuring mounting base 501, two second hole measuring slide rails 502 parallel to each other are disposed on the second hole measuring mounting base 501, the two second hole measuring slide rails 502 are connected to a second hole measuring head mounting base 503 in a sliding manner, the rear end of the second hole measuring head mounting base 503 is connected to the driving end of a second hole measuring cylinder 504, and the second hole measuring cylinder 504 is fixed on the second hole measuring mounting base 501. The left side and the right side of the front end of the second hole measuring head mounting seat 503 are respectively provided with a fourth ball 507, the front end of the second hole measuring mounting seat 501 is detachably connected with a second hole measuring positioning plate 509 through a connecting piece, the left side and the right side of the second hole measuring positioning plate 509 are respectively connected with a fourth ball socket 508, and the fourth ball socket 508 can be connected with the fourth ball 507 in a positioning manner.

In the embodiment shown in fig. 16, a probe bushing 514 is fixed to the front end of the second hole probe mounting base 503, the second hole probe 505 is slidably connected to the probe bushing 514, the rear end of the second hole probe 505 is slidably connected to the rear cover plate 516, a spring 515 is sleeved on the rear end of the second hole probe 505, and the front end and the rear end of the spring 515 respectively contact the step end surface of the second hole probe 505 and the front end surface of the rear cover plate 516. A second hole measuring sensor mounting sleeve 510 is fitted over the front end portion of the second hole measuring head 505, and a plurality of second hole measuring sensors 511 that axially penetrate through the first hole measuring sensor mounting sleeve 510 are provided.

In the embodiment shown in fig. 16, the front end of the second hole measuring head 505 is detachably connected to the second elastic measuring pin 512 via a connector, and the measuring ends of the plurality of second hole measuring sensors 511 are respectively in contact with the plurality of measuring ends of the second elastic measuring pin 512. The outer ring of the second hole measuring sensor mounting sleeve 510 is provided with a first shield 506, the front end of the second hole measuring head 505 extends out of the second shield 506 and is connected with a plurality of second hole measuring sensors 513, and the plurality of first hole measuring sensors 513 are uniformly distributed along the circumferential direction. A plurality of second bore measurement tabs 513 can extend into the second pin bore 340 of the differential housing.

Differential case is when measuring, and first hole gauge head 405 of first hole measurement subassembly 400 and second hole gauge head 505 of second hole measurement subassembly 500 stretch into from the first round pin shaft hole 830 and the second round pin shaft hole 840 of the differential case left and right sides respectively, then measure son 413 and a plurality of second hole measurement round pin 513 through a plurality of first holes and measure the diameter in two round pin shaft holes respectively and calculate the center in round pin shaft hole, consequently, first hole measurement subassembly 400 and second hole measurement subassembly 500 can stretch into the first round pin shaft hole and the second round pin shaft hole of differential case and measure the diameter in differential case round pin shaft hole from controlling respectively.

In the embodiment shown in fig. 17 to 19, the inner ball measuring head assembly 700 includes an inner ball measuring mounting frame 701, the inner ball measuring mounting frame 701 is detachably connected to the main support 600 through a connector, two inner ball measuring adjusting slide rails 702 parallel to each other are disposed on an upper end surface of the inner ball measuring mounting frame 701 along a length direction, and the two inner ball measuring adjusting seats 703 are connected to the two adjusting slide rails 702 in a sliding manner. The lower end face of the inner ball measuring installation frame 701 is fixedly adjusted to drive a cylinder 706, the driving end of the adjusting driving cylinder 706 is connected with a cylinder driving seat 707, and the cylinder driving seat 707 is detachably connected with the lower end face of the inner ball measuring adjusting seat 703 through a connecting piece.

In the embodiment shown in fig. 17 and 18, the inner ball measuring and adjusting seat 703 is connected to the inner ball measuring buffer block 704 at both sides thereof, the buffer mounting blocks 705 are respectively disposed at the front and rear ends of the moving path of the inner ball measuring buffer block 704 at both sides of the inner ball measuring and adjusting seat 703, and the buffer mounting blocks 705 are fixed to the upper end surface of the inner ball measuring mount 701.

In the embodiment shown in fig. 17 and 18, the inner ball measuring and positioning bulbs 708 are respectively disposed on the left and right sides of one end of the inner ball measuring and adjusting seat 703, the inner ball measuring and positioning blocks 709 are respectively fixed at one ends of the two inner ball measuring and adjusting slide rails 702, and the inner ball measuring and positioning bulbs 708 can be connected with the inner ball measuring and positioning blocks 709 in a positioning manner, so as to position the inner ball measuring and adjusting seat 703.

In the embodiment shown in fig. 20 and 21, the inner ball measuring adjustment base 703 is detachably connected with a shaft sleeve 711 through a connecting piece, and the shaft sleeve 711 is rotatably connected with the measuring head spindle 710. The tail end of the measuring head spindle 710 is sleeved with a driven pulley 712, the upper part of the inner ball measuring and adjusting seat 703 is fixed with a spindle driving motor 714, the driving end of the spindle driving motor 714 is connected with a driving pulley 716, and the driving pulley 716 is connected with the driven pulley 712 through a synchronous belt 715.

In the embodiment shown in fig. 21, the rear end of the measuring head spindle 710 is connected to a pulley baffle 713 through a connecting member, the pulley baffle 713 is located on one side of the driven pulley 712, and the pulley baffle 713 can prevent the driven pulley 712 from falling off from the measuring head spindle 710.

In the embodiment shown in fig. 20, an idler assembly is provided on one side of the timing belt 715, and the idler assembly can compress the timing belt 715 to prevent slippage. The idler wheel assembly comprises an idler wheel bushing 717 connected to the side face of the inner ball measuring and adjusting seat 703, an idler wheel mounting shaft 718 is rotatably connected in the idler wheel bushing 717, one end of the idler wheel mounting shaft 718 extends out of the idler wheel bushing 717 and is fixedly connected with an idler wheel support 719, a rotating shaft 720 is fixed on the idler wheel support 719, an idler wheel bearing 721 is rotatably connected on the rotating shaft 720, and the idler wheel bearing 721 is in rolling connection with the synchronous belt 715.

As shown in fig. 21, in the embodiment, the front end of the measuring head spindle 710 is detachably connected to a ball measuring head base 722 through a connector, the upper end of the ball measuring head base 722 is detachably connected to a measuring head pressing plate 726 through a connector, an inner ball measuring sensor mounting seat 723 is arranged between the measuring head pressing plate 726 and the ball measuring head base 722, the front end of the inner ball measuring sensor mounting seat 723 extends out of the ball measuring head base 722, the front end of the inner ball measuring sensor mounting seat 723 is provided with a sensor mounting end surface having a circular arc structure, a plurality of inner ball measuring sensors 724 are uniformly distributed on the sensor mounting end surface, and the front end of the inner ball measuring sensor 724 is connected to an inner ball measuring sub 725. A hold-down spring 728 is connected to the ball probe base 722, and one end of the hold-down spring 728 presses the inner ball measurement sensor mount 723 against the probe pressure plate 726. The upper end of the ball measuring head base 722 is detachably connected with the holding clamp base 727 through a connecting piece, and the holding clamp base 727 is in positioning connection with the inner ball measuring sensor mounting base 723 through a positioning structure.

In the embodiment shown in fig. 21, the inner ball measurement adjusting seat 703 is detachably connected to a ball positioning mounting seat 731 through a connecting member, a ball positioning cylinder mounting seat 732 is fixed to the ball positioning mounting seat 731, a ball positioning cylinder 729 is fixed to the ball positioning cylinder mounting seat 732, a driving end of the ball positioning cylinder 729 is connected to a ball positioning shaft 730, the ball positioning shaft 730 downwardly penetrates through the ball positioning mounting seat 731 and can extend into a positioning groove of a ball positioning flange 733, and the ball positioning flange 733 is detachably connected to the front end face of the measuring head spindle 710 through the connecting member. The front end face of the ball positioning flange 733 is fixedly connected with a top column air cylinder mounting plate, a top column air cylinder 735 is fixed on the top column air cylinder mounting plate, and the driving end of the top column air cylinder 735 is connected with a ball top column 734.

When the inner spherical surface 850 of the differential case is measured, in order to ensure the accuracy of the measurement result, the number and the positions of the measurement points need to be evenly distributed on the measurement surface, and the axis of each measurement point needs to pass through the position of the theoretical sphere center. Since the measured surface is an inner spherical surface, the inner sphere measuring probe 725 performs scanning measurement along the locus of the radius of the sphere during measurement. In order to solve the difficulty, a high-precision rotating main shaft is designed, the fit clearance of the rotating main shaft is strictly controlled, effective rotation can be guaranteed, the rotating clearance cannot be too large, and the rotating precision is guaranteed, so that the accuracy of the measuring data of the measuring head can be guaranteed.

The rotary drive of the measuring spindle is a servo drive, although the accuracy of the servo is not low. In order to ensure the repeatability of a measuring result, a high-precision ball indexing and positioning mechanism is designed, indexing required by servo pre-rotation is firstly carried out, and then a ball positioning indexing disc is pushed by an air cylinder, so that the accuracy of the measuring position of a measuring head in each rotation is ensured, and the reliability of the measuring result in each rotation is also ensured.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. The utility model provides a ball size measurement device in differential mechanism casing, includes main support (600), its characterized in that: an upper measuring assembly (200) is fixed on the upper portion of the front end face of the main support (600), a lower measuring assembly (300) is fixed on the lower portion of the front end face of the main support (600), a measuring position is formed between the upper measuring assembly (200) and the lower measuring assembly (300), and the upper measuring assembly (200) and the lower measuring assembly (300) can respectively extend into upper and lower cylindrical sections of a differential case from upper and lower positions and measure the cylindricity of the upper and lower cylindrical sections of the differential case; the left side and the right side of the front end face of the main support (600) are respectively fixed with a first hole measuring assembly (400) and a second hole measuring assembly (500), the first hole measuring assembly (400) and the second hole measuring assembly (500) are positioned on the left side and the right side of a measuring position, and the first hole measuring assembly (400) and the second hole measuring assembly (500) can respectively extend into a pin shaft hole of a differential shell from left side and right side and measure the diameter of the pin shaft hole of the differential shell; an inner ball measuring head component (700) is fixed on the rear end face of the main support (600), and the inner ball measuring head component (700) can measure the size of the inner spherical surface of the differential shell at the measuring position; and the two sides of the measuring position are respectively and symmetrically provided with the feeding assemblies (100), and the feeding assemblies (100) can convey the differential shell to a measuring station.

2. A differential case inner ball size measuring device according to claim 1, wherein: the feeding assembly (100) comprises a fixed base plate (101), a fixed upright post (102) is connected to the lower end face of the fixed base plate (101), a base (103) is welded and fixed to the lower end of the fixed upright post (102), a feeding guide rail (104) is arranged on the fixed base plate (101) along the length direction, the feeding guide rail (104) is connected with a feeding base frame (105) in a sliding mode through a sliding block, a feeding positioning plate (106) is detachably connected onto the feeding base frame (105) through a connecting piece, a workpiece positioning hole is formed in the feeding positioning plate (106), the edge of the workpiece positioning hole is detachably connected with a plurality of feeding positioning blocks (110) used for supporting a differential shell together through the connecting piece, any two feeding positioning blocks (110) in the plurality of feeding positioning blocks (110) are connected with a workpiece approach switch (111) through threads, and the detection end face of the workpiece approach switch (111) is flush with the upper end face of the feeding positioning blocks (110), the fixed bottom plate (101) is detachably connected with a feeding cylinder support (108) through a connecting piece, a feeding cylinder (107) is fixed on the feeding cylinder support (108), the driving end of the feeding cylinder (107) is connected with a cylinder pushing frame (109), and the cylinder pushing frame (109) is detachably connected with a feeding bottom frame (105) through the connecting piece; the material loading positioning plate is characterized in that one side of a moving path of the material loading positioning plate (106) is respectively provided with a first material loading proximity switch (112) and a second material loading proximity switch (114), the first material loading proximity switch (112) is connected to a first material loading proximity switch bracket (113), the first material loading proximity switch bracket (113) is detachably connected to the fixed base plate (101) through a connecting piece, the second material loading proximity switch (114) is connected to a second material loading proximity switch bracket (115), and the second material loading proximity switch bracket (115) is detachably connected to the fixed base plate (101) through a connecting piece.

3. A differential case inner ball size measuring device according to claim 2, wherein: one side of the feeding chassis (105) is detachably connected with a positioning component (117) through a connecting piece, two ends of a moving path of the positioning component (117) are respectively provided with a limiting component (116), the positioning component (117) and the limiting components (116) at the two ends of the moving path are matched to limit the moving stroke of the feeding chassis (105), the positioning assembly (117) comprises a positioning support (121), the front end and the rear end of the positioning support (121) are respectively connected with a first ball socket (122), the limiting assembly (116) comprises a limiting support (118), a first ball head (119) is connected to the limiting support (118), the first ball socket (122) of the positioning support (121) can be in positioning connection with the first ball head (119) of the limiting support (118), the limiting assembly (116) further comprises a buffer (120) connected to the limiting support (118), and the buffer (120) can contact with the positioning support (121) of the positioning assembly (117).

4. A differential case inner ball size measuring device according to claim 1, wherein: the upper measuring component (200) comprises an upper measuring support (201), the upper part of the upper measuring support (201) is detachably connected with a cylinder mounting plate (203) through a connecting piece, the middle part of the cylinder mounting plate (203) is detachably connected with an upper measuring cylinder (202) through a connecting piece, the driving end of the upper measuring cylinder (202) is connected with one end of a connector (204) through a transition connector, the other end of the connector (204) is connected with a mandrel (211), the lower end face of the upper measuring support (201) is detachably connected with an upper measuring head shell (205) through a connecting piece, one end of the mandrel (211) extends into the upper measuring head shell (205), a guide bush (212), a steel ball bush (213) and a pressing sleeve (214) are sequentially arranged between the inner surface of the upper measuring head shell (205) and the outer surface of the mandrel (211) from outside to inside, and the left side and right side of a shaft section of the mandrel (211) extending into the upper measuring head shell (205) are detachably connected with a mini sensor (215) through a connecting piece, the lower end of a mini sensor (215) is connected with a diamond gauge body (217), the outer ring of a mandrel (211) is sleeved with an upper positioning ball (216), the upper positioning ball (216) can extend into a differential shell to realize upper positioning, the left side and the right side of the shaft section tail end of an upper measuring head shell (205) of the mandrel (211) are detachably connected with a second sensor (218) through a connecting piece, the outer ring of the second sensor (218) is provided with a pen-shaped sensor (219), the pen-shaped sensor (219) penetrates through the upper measuring head shell (205) inside and outside, the lower end of the upper measuring head shell (205) is detachably connected with a lever (222) through the connecting piece, one end of the lever (222) extends into the upper measuring head shell (205) and is connected with an end face gauge body (224) and a spring (223), one end of the spring (223) is in contact with the inner side wall of the upper measuring head shell (205), the measuring head of the end face gauge body (224) is arranged towards the lower end opening of the upper measuring head shell (205), a sensor seat (220) is fixed on the outer side wall of an upper measuring head shell (205), a third sensor (221) is arranged in the sensor seat (220), the measuring end of the third sensor (221) contacts one end of a lever (222), a driven gear (208) is arranged below an upper measuring support (201), an angle adjusting cylinder (206) is fixed on one side of the upper measuring support (201), the driving end of the angle adjusting cylinder (206) is connected with a driving gear (207), the driving gear (207) is meshed and connected with the driven gear (208), a plurality of inner rollers (209) are uniformly arranged on the inner ring of the driven gear (208), the outer surface of each inner roller (209) is in rolling connection with the inner ring of the driven gear (208), the center of each inner roller (209) is in rotating connection with an inner roller shaft, the inner roller shafts are fixed on the upper measuring support (201), a plurality of lower rollers (210) are uniformly arranged on the lower end surface of the driving gear (207), and the outer surfaces of the plurality of lower rollers (210) are in rolling connection with the lower end surface of the driven gear (208), the center of a plurality of lower rollers (210) is rotatably connected with a lower roller shaft, the lower roller shaft is fixed on an upper measuring support (201), the lower end face of a driven gear (208) is detachably connected with a driving support (233) through a connecting piece, a clamping groove is formed in the driving support (233), slots are correspondingly formed in the upper end and the lower end of the clamping groove, the lower end face of the upper measuring support (201) is detachably connected with a first cylinder mounting plate (225) through a connecting piece, a first cylinder (226) is fixed on the first cylinder mounting plate (225), the driving end of the first cylinder (226) is connected with a gas claw mounting plate (227), the lower end face of the gas claw mounting plate (227) is connected with a gas claw (228), two driving ends of the gas claw (228) are respectively connected with a clamping jaw (229), a positioning block (230) is clamped between the two clamping jaws (229), the lower end of the positioning block (230) is connected with a driving frame (231), and the front end of the driving frame (231) is connected with two driving rods (232), two actuating levers (232) can correspond and stretch into in the differential mechanism casing to drive the differential mechanism casing and rotate together, in locating piece (230) can get into the draw-in groove of drive bracket (233), locating piece (230) front end sets up bolt (236), and bolt (236) can correspond and stretch into in the slot.

5. The differential case inner ball size measuring device of claim 4, wherein: the draw-in groove both sides set up locking Assembly respectively, locating piece (230) left and right sides sets up fitting pin (237), when locating piece (230) got into the draw-in groove of driving support (233), fitting pin (237) got into locking Assembly and by locking assembly locking, locking Assembly is including rotating limiting plate (234) of connecting at driving support (233) lateral wall, extension spring (235) one end is passed through to limiting plate (234) one end, extension spring (235) other end passes through the connecting piece and connects driving support (233), limiting plate (234) set up the locking draw-in groove towards bolt (236) one side, bolt (236) can slide in the locking draw-in groove and realize locking.

6. A differential case inner ball size measuring device according to claim 1, wherein: lower part measuring subassembly (300) is including lower part measurement fixed plate (301), lower part measurement fixed plate (301) is connected on main support (600) through connecting piece detachable, fixed two lower slide rail (303) that are parallel to each other on lower part measurement fixed plate (301), sliding connection lower measurement head mounting bracket (304) on two lower slide rail (303), the drive end of push cylinder (302) is down connected to lower measurement head mounting bracket (304) lower extreme, push cylinder (302) are fixed down on push cylinder bracket down, push cylinder bracket passes through connecting piece detachable connection and is on lower part measurement fixed plate (301) down, lower measuring head subassembly is gone up in lower measurement head mounting bracket (304), lower measuring head subassembly includes lower shell body (311), set up lower measurement dabber (312) that can reciprocate in lower measurement head shell body (311), lower measurement dabber (312) lower extreme stretches out lower measurement dabber (311) and connects the bullet that floats through adapter sleeve (313) connection measuring head shell body (311) down The lower end of the floating spring shaft (314) penetrates through the floating frame (316) and then is connected with a first lower sensor clamping sleeve (319), a first lower sensor (318) is clamped in the first lower sensor clamping sleeve (319), the floating frame (316) is connected with the lower measuring head mounting frame (304) through a plurality of adjusting screws (317), the floating spring (315) is sleeved on the floating spring shaft (314), the upper end of the floating spring (315) is contacted with the step end face of the floating spring shaft (314), the lower end of the floating spring (315) is contacted with the floating frame (316), a guide bush (320), a steel ball bush (321) and a pressing sleeve (322) are sequentially arranged between the inner surface of the lower measuring head outer shell (311) and the outer surface of the lower measuring mandrel (312) from outside to inside, the upper end side face of the lower measuring mandrel (312) is connected with a plurality of third lower sensors (325), and a plurality of second lower sensors (323) are radially arranged in the middle of the lower measuring head outer shell (311) in a penetrating manner, one end of the second lower sensor (323) facing the lower measuring mandrel (312) is connected with the lower measuring unit (324), the lower measuring mandrel (312) is sleeved with the lower positioning ball (333), and the lower positioning ball (333) can extend into the differential case to realize the positioning of the lower end of the differential case.

7. The differential case inner ball size measuring device of claim 6, wherein: the utility model discloses a measuring head, including fixed first proximity switch (305) and the fixed lower of second proximity switch (306) respectively on lower part measurement fixed plate (301), proximity switch (306) are located the lower part respectively under first proximity switch (305) and the second and measure last lower extreme on fixed plate (301) motion path one side, fixed lower measuring head buffer (307) in lower part measurement fixed plate (301), lower measuring head buffer (307) are located down measuring head mounting bracket (304) removal route end, fixed lower measuring head (308) in lower part measurement fixed plate (301) upper portion connects second ball socket (309) on lower measuring head positioning plate (308), connects second bulb (310) on lower measuring head mounting bracket (304), and second ball socket (309) can be connected with second bulb (310) location.

8. A differential case inner ball size measuring device according to claim 1, wherein: the first hole measuring component (400) comprises a first hole measuring mounting seat (401), two first hole measuring sliding rails (402) which are parallel to each other are arranged on the first hole measuring mounting seat (401), the two first hole measuring sliding rails (402) are jointly connected with a first hole measuring head mounting seat (403) in a sliding mode, the rear end of the first hole measuring head mounting seat (403) is connected with the driving end of a first hole measuring cylinder (404), the first hole measuring cylinder (404) is fixed on the first hole measuring mounting seat (401), the left side and the right side of the front end of the first hole measuring head mounting seat (403) are respectively provided with a third ball head (407), the front end of the first hole measuring mounting seat (401) is detachably connected with a first hole measuring positioning plate (409) through a connecting piece, the left side and the right side of the first hole measuring positioning plate (409) are respectively connected with a third ball socket (408), and the third ball socket (408) can be positioned and connected with the third ball head (407), the hole measuring head mounting structure is characterized in that one end of a first hole measuring head (405) is fixed on a first hole measuring head mounting base (403), the other end of the first hole measuring head (405) is sleeved with a first hole measuring sensor mounting sleeve (410), a plurality of first hole measuring sensors (411) which axially penetrate through are arranged on the first hole measuring sensor mounting sleeve (410), the front end of the first hole measuring head (405) is detachably connected with an elastic measuring head (412) through a connecting piece, the measuring ends of the first hole measuring sensors (411) are respectively contacted with a plurality of measuring ends of the elastic measuring head (412), the outer ring of the first hole measuring sensor mounting sleeve (410) is provided with a first protective cover (406), and the front end of the first hole measuring head (405) extends out of the first protective cover (406) and is connected with the first hole measuring probes (413).

9. A differential case inner ball size measuring device according to claim 1, wherein: the second hole measuring component (500) comprises a second hole measuring installation seat (501), two second hole measuring sliding rails (502) which are parallel to each other are arranged on the second hole measuring installation seat (501), the two second hole measuring sliding rails (502) are connected with a second hole measuring head installation seat (503) in a sliding mode together, the rear end of the second hole measuring head installation seat (503) is connected with the driving end of a second hole measuring cylinder (504), the second hole measuring cylinder (504) is fixed on the second hole measuring installation seat (501), the left side and the right side of the front end of the second hole measuring head installation seat (503) are respectively provided with a fourth ball head (507), the front end of the second hole measuring installation seat (501) is detachably connected with a second hole measuring positioning plate (509) through a connecting piece, the left side and the right side of the second hole measuring positioning plate (509) are respectively connected with a fourth ball socket (508), and the fourth ball socket (508) can be positioned and connected with the fourth ball head (507), a measuring head bushing (514) is fixed at the front end of the second hole measuring head mounting seat (503), a second hole measuring head (505) is connected in the measuring head bushing (514) in a sliding mode, the rear end of the second hole measuring head (505) is connected with a rear cover plate (516) in a sliding mode, a spring (515) is sleeved on the rear end of the second hole measuring head (505), the front end and the rear end of the spring (515) are respectively contacted with the step end face of the second hole measuring head (505) and the front end face of the rear cover plate (516), a second hole measuring sensor mounting sleeve (510) is sleeved on the front end of the second hole measuring head (505), a plurality of second hole measuring sensors (511) which axially penetrate through are arranged on the first hole measuring sensor mounting sleeve (510), the front end of the second hole measuring head (505) is detachably connected with a second elastic measuring pin (512) through a connecting piece, and the measuring ends of the plurality of the second hole measuring sensors (511) are respectively contacted with a plurality of measuring pins (512), the outer ring of the second hole measuring sensor mounting sleeve (510) is provided with a first shield (506), and the front end of the second hole measuring head (505) extends out of the second shield (506) and is connected with a plurality of second hole measuring sensors (513).

10. A differential case inner ball size measuring device according to claim 1, wherein: the inner ball measuring head assembly (700) comprises an inner ball measuring mounting frame (701), the inner ball measuring mounting frame (701) is detachably connected with a main support (600) through a connecting piece, the upper end surface of the inner ball measuring mounting frame (701) is provided with two inner ball measuring and adjusting sliding rails (702) which are parallel to each other along the length direction, the two adjusting sliding rails (702) are jointly and slidably connected with an inner ball measuring and adjusting seat (703), the lower end surface of the inner ball measuring mounting frame (701) is fixedly adjusted with a driving cylinder (706), the driving end of the adjusting driving cylinder (706) is connected with a cylinder driving seat (707), the cylinder driving seat (707) is detachably connected with the lower end surface of the inner ball measuring and adjusting seat (703) through a connecting piece, the two sides of the inner ball measuring and adjusting seat (703) are respectively connected with inner ball measuring buffer blocks (704), and the front and rear ends of the moving paths of the inner ball measuring buffer blocks (704) on the two sides of the inner ball measuring and adjusting seat (703) are respectively provided with buffer mounting blocks (705), the buffer mounting block (705) is fixed on the upper end surface of the inner ball measuring mounting frame (701), the left side and the right side of one end of the inner ball measuring and adjusting seat (703) are respectively provided with an inner ball measuring and positioning ball head (708), one end of two inner ball measuring and adjusting sliding rails (702) is respectively fixed with an inner ball measuring and positioning block (709), the inner ball measuring and positioning ball head (708) can be connected with the inner ball measuring and positioning block (709) in a positioning way, the inner ball measuring and adjusting seat (703) is detachably connected with a shaft sleeve (711) through a connecting piece, the shaft sleeve (711) is rotatably connected with a measuring head spindle (710), the tail end of the measuring head spindle (710) is sleeved with a driven pulley (712), the upper part of the inner ball measuring and adjusting seat (703) is fixed with a spindle driving motor (714), the driving end of the spindle driving motor (714) is connected with a driving pulley (716), and the driving pulley (716) is connected with the driven pulley (712) through a synchronous belt (715), the tail end of the measuring head spindle (710) is connected with a belt wheel baffle (713) through a connecting piece, the belt wheel baffle (713) is located on one side of a driven belt wheel (712), the belt wheel baffle (713) can prevent the driven belt wheel (712) from falling off from the measuring head spindle (710), one side of the synchronous belt (715) is provided with an idler wheel component, the idler wheel component can compress the synchronous belt (715), the idler wheel component comprises an idler wheel bushing (717) connected to the side surface of the inner ball measuring and adjusting seat (703), an idler wheel mounting shaft (718) is rotationally connected in the idler wheel bushing (717), one end of the idler wheel mounting shaft (718) extends out of the idler wheel bushing (717) and is fixedly connected with an idler wheel support (719), a rotating shaft (720) is fixed on the idler wheel support (719), the rotating shaft (720) is rotationally connected with an idler wheel bearing (721), the idler wheel bearing (721) is connected with the synchronous belt (715) in a rolling manner, and the front end of the measuring head spindle (710) is detachably connected with a ball measuring head base (722) through a connecting piece, the upper end of the spherical measuring head base (722) is detachably connected with a measuring head pressing plate (726) through a connecting piece, an inner spherical measuring sensor mounting seat (723) is arranged between the measuring head pressing plate (726) and the spherical measuring head base (722), the front end of the inner spherical measuring sensor mounting seat (723) extends out of the spherical measuring head base (722), the front end of the inner spherical measuring sensor mounting seat (723) is provided with a sensor mounting end face with a circular arc-shaped structure, a plurality of inner spherical measuring sensors (724) are uniformly distributed on the sensor mounting end face, the front end of each inner spherical measuring sensor (724) is connected with an inner spherical measuring sub (725), a compression spring (728) is connected in the spherical measuring head base (722), one end of the compression spring (728) compresses the inner spherical measuring sensor mounting seat (723) on the measuring head pressing plate (726), the upper end of the spherical measuring head base (722) is detachably connected with a clamping seat (727) through a connecting piece, the clamping seat (727) and the inner spherical measuring sensor mounting seat (723) are positioned and connected through a positioning structure, ball head location mount pad (731) is connected through connecting piece detachable on interior ball measurement adjustment seat (703), fixed ball head location cylinder mount pad (732) is gone up in ball head location mount pad (731), fixed ball head location cylinder (729) is gone up in ball head location cylinder mount pad (732), ball head location axle (730) is connected to the drive end of ball head location cylinder (729), ball head location axle (730) passes ball head location mount pad (731) downwards and can stretch into in the constant head tank of ball head positioning flange (733), ball head positioning flange (733) passes through connecting piece detachable connection measuring head main shaft (710) preceding terminal surface, ball head positioning flange (733) preceding terminal surface fixed connection fore-set prop cylinder mounting panel, fixed fore-prop cylinder (735) on the fore-set cylinder mounting panel, bulb fore-prop cylinder (734) drive end connection bulb fore-prop (734).