CN110864651B - Differential mechanism shell quality detection equipment - Google Patents
Differential mechanism shell quality detection equipment Download PDFInfo
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- CN110864651B CN110864651B CN201911224098.8A CN201911224098A CN110864651B CN 110864651 B CN110864651 B CN 110864651B CN 201911224098 A CN201911224098 A CN 201911224098A CN 110864651 B CN110864651 B CN 110864651B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Abstract
The invention relates to quality detection equipment for a differential case, which comprises a workbench, a supporting device, a flatness detection device and a thread detection device, wherein the supporting device is arranged on the workbench and used for bearing a workpiece, the flatness detection device is used for detecting the flatness of the inner ring surface of the workpiece, the thread detection device is used for detecting the thread of a screw hole of the workpiece, the supporting device is arranged at the upper part of the workbench, the flatness detection device is arranged at the rear side of the supporting device, and the thread detection device is arranged at the left side of the supporting device; according to the invention, the workpiece is positioned and fixed through the supporting device, the threads of the two screw holes are simultaneously detected by the thread detection device at one time, and the flatness detection device performs distance detection on multiple points which are annularly arranged on the inner ring surface of the flange connecting part so as to judge whether the flatness of the inner ring surface of the flange connecting part meets the relevant quality requirements, so that the workload is reduced, the detection efficiency and quality are improved, the thread detection of the screw holes is avoided from being omitted, the accuracy is high, and the adaptability is strong.
Description
Technical Field
The invention relates to the technical field of automatic detection equipment, in particular to quality detection equipment for a differential shell.
Background
The automobile differential mechanism can realize a mechanism that left and right (or front and rear) driving wheels rotate at different rotating speeds, and the common differential mechanism comprises a planetary gear, a planetary gear carrier (differential case), a half axle gear and other parts. The power of the engine enters a differential mechanism through a transmission shaft to directly drive a planet wheel carrier, and then a left half shaft and a right half shaft are driven by planet wheels to respectively drive a left wheel and a right wheel; the upper portion of the differential case is provided with the flange connecting portion, the lower portion of the differential case is provided with the cylinder supporting portion, the quality requirement of the differential case is strict, quality detection needs to be carried out on the differential case before assembly after manufacturing and machining are completed, if bolt in a bolt hole in the flange connecting portion is detected and flatness of an inner ring surface of the flange connecting portion is carried out, the inner ring surface of the flange connecting portion needs to bear larger mechanical stress during normal use, and if the flatness of the inner ring surface does not meet relevant requirements, normal use of the differential is directly influenced.
At present, when a production workshop is used for quality detection of a differential, a differential case is firstly placed on a screw hole detection platform, screws are screwed into screw holes one by using a screwdriver or screwed into the screw holes by holding a go-no-go gauge, and the screws or the go-no-go gauge are screwed out of the screw holes one by one after detection is finished so as to detect whether the screw holes of the differential case meet related quality requirements or not; then, the differential case is placed on a flatness detection platform, and according to a laser transmitter of the three-axis manipulator, a plurality of points are collected at the upper part of the inner ring surface of the flange connecting part, and the measured data of the points are analyzed by a background computer to calculate the flatness of the upper part of the inner ring surface; traditional detection means, work load is big, and detection efficiency is low, appears leaving over easily, and the error rate is high, and quality testing personnel still need shift the differential case that awaits measuring on two testing platforms to when the inspection roughness, also can place unstablely because of the specificity of differential case shape, at this moment urgently need a quality testing equipment to this kind of specific shape of differential case to solve above-mentioned problem.
Disclosure of Invention
The invention provides a differential case quality detection device, which solves the problems.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a quality detection device for a differential case comprises a workbench, a supporting device, a flatness detection device and a thread detection device, wherein the supporting device is arranged on the workbench and used for bearing a workpiece, the flatness detection device is used for detecting the flatness of the inner ring surface of the workpiece, the thread detection device is used for detecting the thread of a screw hole of the workpiece, the supporting device is arranged at the upper part of the workbench, the flatness detection device is arranged at the rear side of the supporting device, and the thread detection device is arranged at the left side of the supporting device;
the supporting device comprises an outer protective cover, an upper supporting table, a lower supporting table, a reinforcing bearing, a driven wheel, a driving wheel and a driving motor, wherein the outer protective cover is fixedly arranged at the upper part of a top plate of the workbench through bolts; the fixed end of a driving motor is arranged at the lower part of a top plate of the workbench, the working end of the driving motor is fixedly connected with the center of the main gear through a speed reducer, a lower supporting platform is embedded in a reinforcing bearing, a driven wheel is sleeved outside the lower end of the lower supporting platform, and the driving wheel is connected with the driven wheel through a rotating belt; when the workpiece is placed, the flange connecting part of the workpiece is embedded in the upper supporting table, and the cylinder supporting part of the workpiece is embedded in the lower supporting table.
Preferably, go up the displacement portion that the supporting bench set up including an organic whole and be located the sheath portion of displacement portion lower part, displacement portion is including a plurality of support discs that stack was arranged about becoming, fixes through welding or bolt between two adjacent support discs from top to bottom, supreme grow in proper order is followed to the diameter of a plurality of support discs, and becomes the stepped arrangement, the middle part of supporting the disc is equipped with circular through-hole, the lower part sets up the location of annular range around being located the top support disc and inserts the post, the circular through-hole that is located the support disc of downside and the upper end welding of sheath portion, and sheath portion inside is linked together for hollow and circular through-hole, sheath portion is the cylinder.
Preferably, the lower supporting platform includes integrative last supporting part and the lower fixed part that sets up, wherein, goes up the diameter from the top down of supporting part and diminishes gradually, and lower fixed part includes drum and lower adapter, and wherein, a plurality of location fastening components that are arranged in the fixed work piece drum supporting part of the equidistant demountable installation in the outside of going up the drum, the upper end of lower adapter can be dismantled with the lower extreme of last drum and be connected, and the lower extreme outside cover of lower adapter is established from the driving wheel.
Preferably, two reinforcing bearings which are arranged at intervals up and down are embedded in the bearing sleeve.
Preferably, the thread detection device is including supporting the riser and installing the thread detection portion of two longitudinal symmetries on supporting the riser, the thread detection portion includes one-level fast lifting unit, the one-level lifter plate, second grade fast lifting power unit, the second grade lifter plate, rotate power unit, dwang and logical no-go gage, the right surface upper end at supporting the riser is installed to the stiff end of one-level fast lifting unit, the work end of one-level fast lifting unit is close to one side fixed connection who supports the riser with the upper portion of one-level lifter plate down, the left end of one-level lifter plate and the right surface sliding connection who supports the riser, the upper portion at the one-level lifter plate is installed to the stiff end of second grade slow lifting power unit, the work end of second grade slow lifting power unit down with the upper end fixed connection of dwang, the lower extreme of dwang can be dismantled.
Preferably, still install the adapter between the lower extreme of dwang and the upper end of leading to the no-go gage, the upper end of adapter cup joints with the lower extreme of dwang, and the upper end of leading to the no-go gage is inlayed inside the lower extreme of adapter.
Further, a torque detection assembly is further installed between the working end of the rotating power unit and the upper end of the rotating rod.
Preferably, the primary quick lifting unit comprises a primary lifting cylinder, the fixed end of the primary lifting cylinder is installed on the upper part of the supporting vertical plate, and the working end of the primary lifting cylinder is downwards fixedly connected with one side, close to the supporting vertical plate, of the upper part of the primary lifting plate;
the second-stage slow lifting power unit comprises a servo motor, a ball screw element and a nut seat, wherein a fixed end of the servo motor is installed at the middle position of the upper portion of the first-stage lifting plate, a working end of the servo motor is downwards fixedly connected with the upper end of a screw rod in the ball screw element, the lower end of the screw rod in the ball screw element is installed on the right surface of the supporting vertical plate through a bearing seat, the nut seat in the ball screw element is sleeved outside the screw rod, one side of the nut seat is in sliding connection with the right surface of the supporting vertical plate, the other side of the nut seat is fixedly connected with one end of the upper portion of the second-stage lifting plate, and the other end of the upper.
Preferably, the flatness detection device comprises a detection bracket, a primary detection lifting unit and an L-shaped lifting support plate, detect the portal frame, second grade detects lift unit and detects the executive component, it installs on the roof upper portion of workstation to detect the support, the stiff end that the lift unit was detected to the one-level is installed in the lower part that detects the support, the work end orientation that the lift unit was detected to the one-level and the diaphragm lower part one end fixed connection of L type lift backup pad, the riser of L type lift backup pad and the sliding surface who detects the support are connected, detect the portal frame and install the diaphragm middle part at L type lift backup pad, the stiff end that the lift unit was detected to the second grade is installed in the lower part that detects the portal frame, the work end that the lift unit was detected to the second grade is down with the upper end fixed connection of lifter, the lower extreme of lifter runs through in proper order behind the diaphragm that detects portal frame and.
Further, the detection execution component is a laser ranging sensor.
Compared with the prior art, the method has the beneficial effects that by adopting the scheme, the workpiece is positioned and fixed through the supporting device, the threads of the two screw holes are simultaneously detected by the thread detecting device at one time, meanwhile, the single-point distance detection is carried out on the inner ring surface of the flange connecting part by the flatness detecting device, then the workpiece is intermittently rotated on the horizontal plane by the supporting device along the Z axis, the threads of other screw holes are detected by the thread detecting device, other multi-point distance detection is carried out on the inner ring surface of the flange connecting part by the flatness detecting device, and the multi-point distance detection data arranged in a ring shape on the inner ring surface of the flange connecting part are analyzed and processed by the background computer to judge whether the flatness of the inner ring surface of the flange connecting part meets the relevant quality requirements or not, namely, the supporting device, the thread detecting device and the flatness detecting device are matched to rapidly realize the threads of the plurality of screw holes of the differential case of the workpiece to be detected Compared with the traditional manual detection means, the quality detection of the flatness of the surface reduces the workload, improves the detection efficiency and quality, avoids missing thread detection of screw holes, and has high accuracy; the upper supporting table and the lower supporting table of the supporting device enable the differential case to be placed stably before detection, detection errors caused by the fact that the placing part is stable are effectively avoided, and detection accuracy is improved; through a plurality of support discs that go up the inside stepped arrangement that sets up of supporting bench to the differential case location operation of different diameter sizes is adapted, detection range is wide, and the suitability is strong.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the supporting device of the present invention;
FIG. 3 is a schematic view of the vertical cross-section of the upper support platform of the present invention;
FIG. 4 is a schematic view of the structure of the lower support table of the present invention;
FIG. 5 is a schematic view of the positioning and fastening assembly of the present invention;
FIG. 6 is a schematic structural diagram of a thread detecting device according to the present invention;
FIG. 7 is a schematic structural diagram of a flatness detecting apparatus according to the present invention;
FIG. 8 is a schematic view of the central stabilizing element of the present invention;
FIG. 9 is a schematic structural view of the differential carrier housing of the present invention;
as shown in the above legend: 1. the device comprises a workbench 2, a supporting device 20, an outer protective cover 21, an upper supporting platform 22, a lower supporting platform 221, an upper bearing part 222, an upper cylinder 223, a lower adapter 23, a reinforced bearing 24, a bearing sleeve 25, a driven wheel 26, a driving wheel 27, a driving motor 28, a positioning component 29, a positioning fastening component 291, a positioning electromagnet 292, a reinforced rod 293, a reinforced plate 294, a connecting plate 295, a sliding support rod 296, a sliding support rod 297, a sliding support rod 298, a sliding support seat 299, a stop rod 3, a supporting vertical plate 4, a thread detection part 41, a primary quick lifting unit 42, a primary lifting plate 43, a secondary slow lifting power unit 44, a secondary lifting plate 45, a rotating power unit 46, a rotating rod 47, a go-no go gauge 5, a flatness detection device 51, a detection support 52, a primary, The device comprises a first-stage detection lifting unit 53, an L-shaped lifting support plate 54, a detection portal frame 55, a second-stage detection lifting unit 56, a detection execution assembly 57, a central stabilizing assembly 571, a vertical rod 572, an upper bearing 573, a lower bearing 574, a stabilizing sleeve 575, a horn sleeve 6, a differential case 61, a flange connecting part 62, a cavity part 63, an upper funnel-shaped part 64 and a lower cylindrical part.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 9, the overall structure of the present invention is:
the supporting device 2 comprises an outer protective cover 20, an upper supporting table 21, a lower supporting table 22, a reinforcing bearing 23, a driven wheel 25, a driving wheel 26 and a driving motor 27, wherein the outer protective cover 20 is fixedly arranged on the upper part of a top plate of the workbench 1 through bolts (the outer protective cover 20 is not shown in the drawing), positioning inserting columns which are annularly arranged are integrally arranged at the lower part of the upper supporting table 21 and are inserted into positioning inserting grooves which are annularly arranged in the outer protective cover 20, so that the lower supporting table 22 is fixed in the outer protective cover 20, and the reinforcing bearing 23 is arranged in a vertical through hole formed in the middle of the workbench 1 through a bearing sleeve 24; the fixed end of a driving motor 27 is installed at the lower part of the top plate of the workbench 1, the working end of the driving motor 27 is fixedly connected with the center of the main gear through a speed reducer, a lower supporting table 22 is embedded in a reinforcing bearing 23, a driven wheel 25 is sleeved outside the lower end of the lower supporting table 22, and a driving wheel 26 is connected with the driven wheel 25 through a rotating belt; when a workpiece is placed, the flange connecting portion 61 of the workpiece is fitted into the upper support table 21, and the cylindrical support portion of the workpiece is fitted into the lower support table 22.
Further, strutting arrangement 2 is still including installing the locating component 28 in outer protection casing 20 one side, locating component 28 is used for further ensuring that the work piece that awaits measuring places the position accuracy, and locating component 28 includes locating support, location horizontal cylinder and location push rod promptly, the stiff end of location horizontal cylinder is installed on locating support, and the work end of location horizontal cylinder and the one end fixed connection of location push rod insert the locating hole of the work piece that awaits measuring after outer protection casing 20 and last supporting bench 21 are run through to the other end of location push rod to ensure that the work piece that awaits measuring places the position accuracy, avoid follow-up screw thread detection device's logical no-go gage 47 can't get into in the screw hole.
Further, a PLC control cabinet is arranged at the lower part of the workbench 1, and a PLC control device is arranged in the PLC control cabinet, wherein the supporting device 2, the flatness detection device 5 and the thread detection device are electrically connected with the PLC control device so as to realize automatic operation according to a control program in the PLC control device; further, when the workpiece differential case 6 to be detected is placed on the upper support table 21, wherein the flange connecting portion 61 of the differential case 6 is placed in the upper support table 21, the cylindrical support portion of the differential case 6 is embedded in the lower support table 22 and is positioned and fixed by the lower support table 22, two screw holes on the flange connecting portion 61 are subjected to thread detection by the thread detection device, meanwhile, a certain point distance of the upper surface of the inner ring surface of the flange connecting portion 61 is subjected to distance detection by the flatness detection device 5, then the support device 2 drives the differential case 6 to rotate, and the other screw holes are subjected to thread detection by the thread detection device, so that the quality detection of the whole differential case 6 is gradually completed.
Further, the differential case 6 rotates: since the lower support platform 22 fixes the lower portion of the differential case 6, the driving motor 27 operates to drive the driving pulley 26 to rotate, so as to drive the driven pulley 25, the lower support platform 22 and the differential case 6 to rotate synchronously by rotating the belt, so that the thread detection device and the flatness detection device 5 perform corresponding detection operations on the flange connection portion 61 of the differential case 6.
Further, the upper support platform 21 is used for bearing and supporting the flange connecting part 61 of the differential case 6, and the variable-pitch part comprises a plurality of support discs with different diameters, so that the support bearing operation for supporting the differentials with different diameters is facilitated, and the application range is wide; the cylindrical support portion of the workpiece passes through the inside of the sheath portion and extends into the lower support table 22.
Further, the cylinder support portion of the workpiece may be divided into an upper funnel portion 63 and a lower cylindrical portion 64, wherein the diameter of the upper funnel portion of the cylinder support portion of the workpiece matches the diameter of the sheath portion of the upper support table 21 and the diameter of the upper bearing portion 221 of the lower support table 22, and the diameter of the lower cylindrical portion 64 of the cylinder support portion of the workpiece matches the diameter of the upper cylinder 222 of the lower support table 22; that is, after the differential case 6 for the workpiece to be measured is placed, the lower surface of the outer circle of the flange connecting portion 61 of the workpiece contacts the upper surface of the supporting disk of the upper supporting table 21, the cavity portion 62 of the lower portion of the flange connecting portion 61 contacts the inner wall of the sheath portion of the upper supporting table 21, the upper funnel portion 63 of the cylindrical supporting portion of the workpiece contacts the inner wall of the upper bearing portion 221 of the lower supporting table 22, the lower cylindrical portion 64 of the cylindrical supporting portion of the workpiece is located in the upper cylinder 222 of the lower fixing portion, and the lower cylindrical portion 64 of the workpiece is positioned by the positioning and fastening assembly 29.
Furthermore, the positioning and fastening assembly 29 is mounted on the outer wall of the upper cylinder 222 of the lower support table 22 and is used for positioning and clamping a cylinder support part in a workpiece, in particular, positioning and clamping the lower cylindrical part 64 of the workpiece, the positioning and fastening assembly 29 comprises a positioning electromagnet 291, a reinforcing rod 292, a reinforcing plate 293, a sliding support rod 295, a sliding support rod 296 and a stop rod 299, the fixed end of the positioning electromagnet 291 is mounted on the outer wall of the upper cylinder 222 of the lower support table 22 through a base, the reinforcing plate 293 is fixedly mounted on the lower portion of the top plate of the workbench 1 through a connecting plate 294 and is located between the positioning electromagnet 291 and the lower support table 22, the left ends of the sliding support rod 295 and the sliding support rod 296 are correspondingly hinged with a sliding seat 297 and a sliding seat 298, the sliding seat 297 and the sliding seat two are slidably connected with the right surface of the reinforcing plate 293, and the sliding support rod 295, the sliding support rod 293 and the, the working end of the positioning electromagnet 291 is fixedly connected with the left end of the reinforcing rod 292, the right end of the reinforcing rod 292 penetrates through the reinforcing plate 293 and then is converged with the right ends of the first sliding support rod 295 and the second sliding support rod into a point and then is fixedly connected with the left end of the stop rod 299, and the right end of the stop rod 299 penetrates through the upper cylinder 222 of the lower support table 22 and then corresponds to the groove part of the cylinder support part in the workpiece; when the positioning is not performed, the stop rod 299 is positioned outside the lower supporting platform 22, and an included angle between the first sliding supporting rod 295 and the right end of the second sliding supporting rod forms an obtuse angle; when positioning operation is carried out, the positioning electromagnet 291 works to drive the reinforcing rod 292 to move rightwards, at this time, the right end of the reinforcing rod 292 drives the first sliding support rod 295 and the second sliding support rod to move rightwards until the stop rod 299 penetrates through the groove part of the cylindrical support part inserted into the workpiece in the lower support table 22, so that positioning operation is carried out on the workpiece, and at this time, an included angle between the first sliding support rod 295 and the right end of the second sliding support rod forms an acute angle.
In embodiment 4, on the basis of embodiment 1, two reinforcing bearings 23 which are arranged at intervals up and down are embedded in a bearing sleeve 24; further, the two lower bearings 573 are used to uniformly apply force to the upper cylinder 222 of the lower support table 22, thereby preventing the upper cylinder 222 of the lower support table 22 from being deformed by external force.
Example 5, the thread detecting device includes a supporting vertical plate 3 and two thread detecting portions 4 installed on the supporting vertical plate 3 and symmetrically in front and back directions, the thread detecting portion 4 includes a first-stage fast lifting unit 41, a first-stage lifting plate 42, a second-stage slow lifting power unit 43, a second-stage lifting plate 44, a rotary power unit 45, a rotary rod 46 and a go-no-go gauge 47, a fixed end of the first-stage fast lifting unit 41 is installed on the upper end of the right surface of the supporting vertical plate 3, a working end of the first-stage fast lifting unit 41 is fixedly connected with one side of the upper portion of the first-stage lifting plate 42 close to the supporting vertical plate 3 in a downward direction, a left end of the first-stage lifting plate 42 is slidably connected with the right surface of the supporting vertical plate 3, a fixed end of the second-stage slow lifting power unit 43 is installed on the upper portion of the first-, the lower end of the rotating rod 46 is detachably connected with the upper end of the go-no go gauge 47; further, when carrying out the screw thread detection operation, the work of one-level quick lift unit 41 drives one-level lifter plate 42 and drives second grade slow lifting power unit 43 and logical no-go gage 47 and descend to setting for the height, second grade slow lifting power unit 43 work drive second grade lifter plate 44 drives logical no-go gage 47 and descends slowly after that, rotate power unit 45 simultaneously and drive dwang 46 and drive logical no-go gage 47 and rotate, make the slow spiral of logical no-go gage 47 get into the screw hole that flange joint portion 61 detected, detect with the screw thread to the screw hole, detect the operation through the screw thread to the screw hole of logical no-go gage 47 in order to replace artifical manual, detection efficiency is high.
Embodiment 7, on the basis of embodiment 5, a torque detection assembly is further installed between the working end of the rotary power unit 45 and the upper end of the rotary rod 46; the torque detection component can be a dynamic torque sensor with the model of KR-803; the torque sensor can also be a non-contact torque sensor, which is the existing basis and comprises an input shaft, an output shaft and a torsion bar, wherein the upper end of the input shaft is fixedly connected with the working end of the rotating power unit 45, the lower end of the input shaft is fixedly connected with the upper end of the output shaft through the torsion bar, and the lower end of the output shaft is fixedly connected with the upper end of the rotating rod 46; wherein, there is the spline on the input shaft, there is the keyway on the output shaft, when the torsion bar is twisted round by the turning moment effect of rotating power unit 45, the relative position between the spline on the input shaft and the keyway on the output shaft has just been changed, the relative displacement change of spline and keyway equals the torsion volume of torsion bar for the magnetic induction intensity on the spline changes, the change of magnetic induction intensity is converted into voltage signal through the coil, thereby can detect out to lead to no-go gauge 47 and twist into the screw hole slowly and receive the hindrance or not, judge promptly whether the screw thread of department screw hole meets the requirements or not.
Embodiment 8, on the basis of embodiment 5, the primary fast lifting unit 41 includes a primary lifting cylinder, a fixed end of the primary lifting cylinder is installed on the upper portion of the supporting vertical plate 3, and a working end of the primary lifting cylinder is fixedly connected with one side of the upper portion of the primary lifting plate 42 close to the supporting vertical plate 3 in a downward direction; the primary quick lifting unit 41 is used for driving the primary lifting plate 42 and the go-no-go gauge 47 to quickly descend to the upper part of the screw hole; the secondary slow lifting power unit 43 is used for driving the secondary lifting plate 44 to drive the go-no go gauge 47 to slowly descend;
the second-stage slow lifting power unit 43 comprises a servo motor, a ball screw element and a nut seat, wherein the fixed end of the servo motor is arranged in the middle position of the upper part of the first-stage lifting plate 42, the working end of the servo motor is downwards fixedly connected with the upper end of a screw rod in the ball screw element, the lower end of the screw rod in the ball screw element is arranged on the right surface of the supporting vertical plate 3 through a bearing seat, the nut seat in the ball screw element is sleeved outside the screw rod, one side of the nut seat is in sliding connection with the right surface of the supporting vertical plate 3, the other side of the nut seat is fixedly connected with one end of the upper part of the second-stage lifting plate 44, and the other end of the upper part of; the rotating power unit 45 is a variable frequency speed regulating motor and is used for driving the rotating rod 46 to rotate slowly and screwing the go-no go gauge 47 into the screw hole slowly.
Embodiment 9, the flatness detecting apparatus 5 includes a detecting bracket 51, a first-stage detecting lifting unit 52, an L-shaped lifting support plate 53, a detecting portal frame 54, a second-stage detecting lifting unit 55, and a detecting executing component 56, wherein the detecting bracket 51 is installed on the top of the worktable 1, a fixed end of the first-stage detecting lifting unit 52 is installed on the lower portion of the detecting bracket 51, a working end of the first-stage detecting lifting unit 52 faces towards one end of the lower portion of the transverse plate of the L-shaped lifting support plate 53, a vertical plate of the L-shaped lifting support plate 53 is slidably connected with the surface of the detecting bracket 51, the detecting portal frame 54 is installed in the middle portion of the transverse plate of the L-shaped lifting support plate 53, a fixed end of the second-stage detecting lifting unit 55 is installed on the lower portion of the detecting portal frame 54, a working end of the second-stage detecting lifting unit 55 faces downwards and is fixedly connected with the upper end of the lifting rod, and the lower end of the lifting And (4) connecting.
Further, the first-stage detection lifting unit 52 and the second-stage detection lifting unit 55 are both vertical SMC standard cylinders, the first-stage detection lifting unit 52 is used for driving the L-shaped lifting support plate 53 to move up and down along the support bracket, and the second-stage detection lifting unit 55 is used for driving the detection execution assembly 56 to move up and down.
Further, when the flatness detection operation is performed, the first-stage detection lifting unit 52 operates to drive the L-shaped lifting support plate 53 to move above the workpiece, and then the second-stage detection lifting unit 55 operates to drive the detection execution assembly 56 to move downward, so that the detection execution assembly 56 and the workpiece to be detected keep a certain height distance, thereby performing distance detection on a certain point on the upper surface of the inner ring surface of the workpiece to be detected.
Further, a central stabilizing assembly 57 is further mounted at a position, corresponding to the center of the differential case 6, on the upper portion of the L-shaped lifting support plate 53, the central stabilizing assembly 57 includes a vertical rod 571, an upper bearing 572, a lower bearing 573 and a stabilizing sleeve 574, the upper portion of the vertical rod 571 is mounted on the upper portion of the L-shaped lifting support plate 53 through the upper bearing 572, a horizontal stop rod is further provided on the upper portion of the vertical rod 571 to prevent the vertical rod 571 from being separated from the upper bearing 572, the lower end of the vertical rod 571 is fixedly connected with the center of the lower bearing 573, the stabilizing sleeve 574 is sleeved outside the lower bearing 573, friction grains are provided on the outside of the stabilizing sleeve 574, the stabilizing sleeve 574 is made of rubber, and the lower end of the stabilizing sleeve 574 is embedded in the lower cylindrical portion 64 of the; when the supporting device 2 drives the workpiece to be measured to rotate, in order to keep the workpiece to be measured to stably rotate on the horizontal plane without inclination, the stabilizing sleeve 574 is embedded in the lower cylindrical part 64 of the workpiece all the time, namely the stabilizing sleeve 574 synchronously rotates along with the workpiece to be measured; further, the upper bearing 572 and the lower bearing 573 are both sleeved outside the vertical rod 571, so that the lower part of the vertical rod 571 is prevented from being deformed and broken due to uneven stress of the vertical rod 571 when the vertical rod 571 rotates, and the upper bearing 572 and the lower bearing 573 effectively enable the vertical rod 571 to be stressed uniformly, and accordingly the service life of the vertical rod 571 is prolonged.
Furthermore, in order to further enable the workpiece to be detected to stably rotate, a horn sleeve 575 is integrally/separately arranged at the contact position of the middle part of the stabilizing sleeve 574 and the upper funnel-shaped part 63 of the workpiece, the upper end of the horn sleeve 575 is sleeved outside the stabilizing sleeve, the lower end of the horn sleeve 575 is matched with the size of the upper funnel-shaped part 63 of the workpiece, namely, the lower end of the horn sleeve 575 is in contact with the upper funnel-shaped part 63 of the workpiece; for another example, in order to further make the workpiece to be tested rotate stably, the horn casing 575 is made of hard plastic material.
The working principle is as follows:
the material placing and positioning process comprises the following steps: firstly, a differential case of a workpiece to be measured is placed into an upper supporting table through a manual or mechanical arm, a flange connecting part of the workpiece is contacted with the upper surface of a supporting disc of the upper supporting table, a cavity part at the lower part of the flange connecting part is contacted with the inner wall of a sheath part of the upper supporting table, an upper funnel-shaped part of a workpiece cylinder supporting part is contacted with the inner wall of an upper bearing part of a lower supporting table, a lower cylindrical part of the workpiece cylinder supporting part is positioned in an upper cylinder of a lower fixing part, then a positioning horizontal cylinder in a positioning assembly works to drive a positioning push rod to horizontally move, and the other end of the positioning push rod is inserted into a positioning hole of the workpiece to be measured;
positioning and fixing processes: after the workpiece to be measured is placed, the positioning fastening components work simultaneously, namely, the positioning electromagnet works to drive the reinforcing rod to move horizontally, the stop rod is driven to move horizontally to penetrate through the upper cylinder of the lower supporting table and then is inserted into the groove part of the cylinder supporting part in the workpiece, and at the moment, the right ends of the first sliding supporting rod and the second sliding supporting rod form an acute angle to strengthen the strength of the reinforcing rod, so that the positioning and fixing operation of the workpiece is completed;
the primary detection lifting unit works to drive the L-shaped lifting support plate to move to the upper part of the workpiece, and the stabilizing sleeve is positioned in the lower cylindrical part of the workpiece, so that the inner ring surface of the workpiece to be detected is parallel to the horizontal plane;
and (3) a thread detection process: the two thread detection parts can simultaneously detect the internal threads of the screw holes of the two flange connection parts; the first-stage quick lifting unit works, the first-stage lifting plate drives the second-stage slow lifting power unit and the go-no go gauge to descend to a set height, then the second-stage slow lifting power unit works to drive the second-stage lifting plate to drive the go-no go gauge to descend slowly, meanwhile, the power unit is rotated to drive the rotating rod to drive the go-no go gauge to rotate, and the go-no go gauge is enabled to enter a screw hole to be detected of the flange connecting part slowly and spirally so as to detect threads of the screw hole;
and (3) flatness detection process: the first-stage detection lifting unit and the second-stage detection lifting unit are SMC standard cylinders which are vertically arranged, the first-stage detection lifting unit is used for driving the L-shaped lifting support plate to move up and down along the support bracket, the second-stage detection lifting unit is used for driving the detection execution assembly to move down to a set position, and the detection execution assembly detects the point distance of the current position of the workpiece to be detected;
thereby completing the process of detecting the distance between the thread of the screw hole and a certain point of the inner ring surface;
then the supporting device drives the workpiece to be detected to rotate by a set angle, the thread detection device detects the threads of the other two screw holes, meanwhile, the flatness detection device detects the distance of a second point of the workpiece to be detected, and the sequential process is continuously circulated, so that the internal threads of all the screw holes of the workpiece to be detected are detected; the detection executing component detects a plurality of point distances in annular arrangement and carries out analysis processing on a program of a background computer, namely, the actually detected plurality of point distances in annular arrangement are compared with data of each point of the flatness of the upper surface of the inner ring surface of the qualified differential mechanism, so as to determine whether the flatness data of the upper surface of the inner ring surface of the differential mechanism is within a normal allowable range or not and determine whether the inner ring surface of the differential mechanism is qualified or unqualified;
thereby completing the quality detection operation of all the screw holes and the inner ring surface of the differential shell.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The quality detection equipment for the differential case comprises a workbench and is characterized by further comprising a supporting device, a flatness detection device and a thread detection device, wherein the supporting device is installed on the workbench and used for bearing a workpiece, the flatness detection device is used for detecting the flatness of the inner ring surface of the workpiece, the thread detection device is used for detecting the thread of a screw hole of the workpiece, the supporting device is installed on the upper portion of the workbench, the flatness detection device is installed on the rear side of the supporting device, and the thread detection device is installed on the left side of the supporting device;
the supporting device comprises an outer protective cover, an upper supporting table, a lower supporting table, a reinforcing bearing, a driven wheel, a driving wheel and a driving motor, wherein the outer protective cover is fixedly arranged at the upper part of a top plate of the workbench through bolts; the fixed end of a driving motor is arranged at the lower part of a top plate of the workbench, the working end of the driving motor is fixedly connected with the center of the main gear through a speed reducer, a lower supporting platform is embedded in a reinforcing bearing, a driven wheel is sleeved outside the lower end of the lower supporting platform, and the driving wheel is connected with the driven wheel through a rotating belt; when a workpiece is placed, the flange connecting part of the workpiece is embedded in the upper supporting table, and the cylinder supporting part of the workpiece is embedded in the lower supporting table;
the screw thread detection device is including supporting the riser and installing the screw thread detection portion of two front and back symmetries on supporting the riser, the screw thread detection portion includes one-level fast lifting unit, the one-level lifter plate, second grade fast lifting power unit, the second grade lifter plate, the power unit rotates, dwang and logical no-go gage, the right surface upper end at supporting the riser is installed to the stiff end of one-level fast lifting unit, the work end of one-level fast lifting unit is close to one side fixed connection who supports the riser with the upper portion of one-level lifter plate down, the left end of one-level lifter plate and the right surface sliding connection who supports the riser, the upper portion at the one-level lifter plate is installed to the stiff end of second grade slow lifting power unit, the work end of second grade slow lifting power unit down with the upper end fixed connection of dwang, the lower.
2. The differential case quality detection apparatus according to claim 1, wherein the upper supporting platform includes a variable pitch portion and a sheath portion located below the variable pitch portion, the variable pitch portion includes a plurality of supporting disks stacked up and down, two adjacent supporting disks are fixed by welding or bolts, the diameters of the supporting disks become larger from bottom to top in sequence and are arranged in a stepped manner, a circular through hole is formed in the middle of the supporting disk, positioning insertion columns arranged in a ring shape are arranged at the lower portion of the periphery of the supporting disk at the uppermost side, the circular through hole of the supporting disk at the lowermost side is welded to the upper end of the sheath portion, the middle of the sheath portion is hollow and is communicated with the circular through hole, and the sheath portion is a cylinder.
3. The differential case quality detection apparatus of claim 1, wherein the lower supporting platform comprises an upper bearing portion and a lower fixing portion, wherein the upper bearing portion and the lower fixing portion are integrally arranged, the diameter of the upper bearing portion gradually decreases from top to bottom, the lower fixing portion comprises an upper cylinder and a lower connecting cylinder, a plurality of positioning and fastening assemblies for fixing the cylinder supporting portion in the workpiece are detachably mounted on the outer portion of the upper cylinder at equal intervals, the upper end of the lower connecting cylinder is detachably connected with the lower end of the upper cylinder, and the driven wheel is sleeved on the outer portion of the lower end of the lower connecting cylinder.
4. The differential case quality detecting apparatus of claim 1, wherein two reinforcing bearings are embedded in the bearing housing.
5. The differential case quality detection device according to claim 1, wherein an adapter is further installed between the lower end of the rotating rod and the upper end of the go-no-go gauge, the upper end of the adapter is sleeved with the lower end of the rotating rod, and the upper end of the go-no-go gauge is embedded inside the lower end of the adapter.
6. The differential case quality inspection apparatus of claim 1, wherein a torque detection assembly is further mounted between the working end of the rotating power unit and the upper end of the rotating shaft.
7. The differential case quality detection device of claim 1, wherein the primary fast lifting unit comprises a primary lifting cylinder, a fixed end of the primary lifting cylinder is mounted on an upper portion of the supporting vertical plate, and a working end of the primary lifting cylinder is fixedly connected with a side, close to the supporting vertical plate, of an upper portion of the primary lifting plate in a downward direction;
the second-stage slow lifting power unit comprises a servo motor, a ball screw element and a nut seat, wherein a fixed end of the servo motor is installed at the middle position of the upper portion of the first-stage lifting plate, a working end of the servo motor is downwards fixedly connected with the upper end of a screw rod in the ball screw element, the lower end of the screw rod in the ball screw element is installed on the right surface of the supporting vertical plate through a bearing seat, the nut seat in the ball screw element is sleeved outside the screw rod, one side of the nut seat is in sliding connection with the right surface of the supporting vertical plate, the other side of the nut seat is fixedly connected with one end of the upper portion of the second-stage lifting plate, and the other end of the upper.
8. The differential case quality detecting apparatus according to claim 1, wherein the flatness detecting device comprises a detecting bracket, a first-stage detecting lifting unit, an L-shaped lifting supporting plate, a detecting gantry, a second-stage detecting lifting unit and a detecting executing component, the detecting bracket is mounted on the top of the top plate of the workbench, the fixed end of the first-stage detecting lifting unit is mounted on the lower portion of the detecting bracket, the working end of the first-stage detecting lifting unit faces towards one end of the lower portion of the transverse plate of the L-shaped lifting supporting plate and is fixedly connected with the upper end of the lifting rod, the vertical plate of the L-shaped lifting supporting plate is slidably connected with the surface of the detecting bracket, the detecting gantry is mounted in the middle of the transverse plate of the L-shaped lifting supporting plate, the fixed end of the second-stage detecting lifting unit is mounted on the lower portion of the detecting gantry, the working end of the second-stage detecting lifting unit faces downwards and is fixedly connected with the upper end of the And (4) fixedly connecting.
9. The differential case quality inspection device of claim 8, wherein the inspection performing component is a laser ranging sensor.
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| CN111981994B (en) * | 2020-08-19 | 2022-03-11 | 东台市杰顺机械制造有限公司 | Detection device for flywheel housing processing production |
| CN113358074B (en) * | 2021-06-11 | 2022-02-01 | 无锡万奈特测量设备有限公司 | Device for measuring size of inner ball of differential shell |
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| CN201651031U (en) * | 2010-05-13 | 2010-11-24 | 湖州锐狮标准件制造有限公司 | Support seat used in low rotation speed occasion |
| CN103742630A (en) * | 2013-12-19 | 2014-04-23 | 柳州上汽汽车变速器有限公司 | Differential mechanism base |
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