A flexible multifunctional numerical control spline and spring clip groove detection device

Abstract

The present application relates to a kind of flexible multifunctional numerical control spline and snap spring groove detection equipment.The present application includes detection machine base body, spline automatic detection unit, snap spring groove detection unit, NG removal channel, workpiece transfer mechanism, inlet motor channel and outlet motor channel are installed on the detection machine base body, the spline automatic detection unit is used to realize the type switching of inner / outer spline, the snap spring groove detection unit is used to realize the position detection of outer spline snap spring groove width, groove bottom diameter and groove position, operating box is installed on the guard net of the detection machine base body, and electrical control box and pneumatic component box are respectively arranged in the front and rear of the lower part of the detection machine base body.The present application provides a kind of flexible multifunctional numerical control spline and snap spring groove detection equipment, can significantly reduce the problem of distinguishing spline and / or snap spring true OK piece as NG piece, and eliminate the NG piece flow out of factory.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of assembly line parts, in particular to a flexible multifunctional numerical control spline and spring retaining groove detection equipment. BACKGROUND

[0002] The inner spline and the outer spline are both multi-tooth parts, the spline on the inner cylindrical surface is an inner spline, and the spline on the outer cylindrical surface is an outer spline. The two parts are coupled by the inner spline and the outer spline, have good centering, guiding and load bearing properties, and are widely used in the transmission of large torque. The existing inner spline and outer spline detection methods have high first rejection rates and detection data that cannot meet the TS16949 quality system due to the poor positioning and floating of the detected workpiece, spline ring gauge and plug gauge. In addition, the axial size (see B1 or B2 in the middle) of the outer spline spring retaining groove is difficult to detect. With the development of intelligent manufacturing towards high quality, high efficiency and black light factory, it is urgent to design a spline spring retaining groove detection machine that meets the TS16949 quality system. Figure 12 SUMMARY

[0003] Therefore, the present application provides a flexible multifunctional numerical control spline and spring retaining groove detection equipment, which can significantly reduce the problem of distinguishing spline and / or spring OK parts (workpieces that meet quality standards) as NG parts (workpieces that do not meet quality standards), and eliminate the outflow of NG parts from the factory. In addition, the equipment can also automatically remove pseudo-NG workpieces (workpieces that are incorrectly judged as unqualified) with burrs, and then perform secondary detection to reduce manual participation and improve production line efficiency.

[0004] To solve the above technical problems, the present application provides a flexible multifunctional numerical control spline and spring retaining groove detection equipment, which comprises a detection machine base body, a spline automatic detection unit, a spring retaining groove detection unit, an NG removal channel, a workpiece transfer mechanism, an inlet motorized channel and an outlet motorized channel are installed on the detection machine base body, the spline automatic detection unit is used to realize the type switching of the inner / outer spline, the spring retaining groove detection unit is used to realize the position detection of the width, bottom diameter and position of the outer spline spring retaining groove, an operation box is installed on the protective net of the detection machine base body, and an electrical control box and a pneumatic element box are respectively arranged on the front and rear of the lower part of the detection machine base body.

[0005] ​In an embodiment of the present application, the spline automatic detection unit comprises a detection gauge and workpiece relative motion mechanism, an external spline positioning detection mechanism, an internal spline positioning detection mechanism, a detected workpiece angle setting rotary drive mechanism, and a spline force detection mechanism. The external spline positioning detection mechanism is used to realize external spline detection of the workpiece. The internal spline positioning detection mechanism is used to realize internal spline detection of the workpiece. The external spline positioning detection mechanism and the internal spline positioning detection mechanism are selectively installed. The detection gauge and workpiece relative motion mechanism is used to realize positioning with the detected workpiece during downward operation from the upper position to the middle position.

[0006] In an embodiment of the present application, the detection gauge and workpiece relative motion mechanism comprises a detection frame, the detection frame is provided with a lower mounting plate, the lower mounting plate is provided with a coarse adjustment scale and a measuring part support, the lower mounting plate is rotationally connected with a handwheel screw rod, the upper and lower coarse adjustment mounting plates are connected with the handwheel screw rod through an adjusting nut, the measuring part support comprises a first linear bearing and a guide rod, the upper and lower coarse adjustment mounting plates are slidably connected with the guide rod through the first linear bearing, the spline gauge moving mounting plate is connected with a first ball screw rod, the first ball screw rod is driven to rotate by a first driving motor, and the spline gauge moving mounting plate is provided with a clamping sleeve.

[0007] In an embodiment of the present application, the external spline positioning detection mechanism comprises a workpiece positioning lower center, an external spline ring gauge support plate, an external spline detection ring gauge, a workpiece positioning upper center, an axial positioning reference elastic floating mechanism, an upper center downward pressing spring, an upper center elastic pressing rod, and an upper center lifting and pressing cylinder. The upper center elastic pressing rod is slidably connected with the upper and lower coarse adjustment mounting plates through a linear sliding bearing. The workpiece positioning upper center is connected with the upper center elastic pressing rod. The upper center lifting and pressing cylinder drives the upper center elastic pressing rod and the workpiece positioning upper center to move downward through the upper center downward pressing spring, and the upper center elastic pressing rod and the workpiece positioning upper center are elastically positioned and pressed with the upper center hole of the external spline workpiece. The workpiece positioning lower center is connected with the lower mounting plate and is positioned with the lower center hole of the external spline workpiece to realize centering of the external spline workpiece. The external spline ring gauge support plate and the external spline detection ring gauge are sequentially connected with the workpiece positioning upper center. The outer diameter size of the workpiece positioning upper center is matched with the small diameter of the external spline detection ring gauge to make the external spline detection ring gauge concentric with the external spline workpiece. The design angle of the external spline detection ring gauge is matched with the outer diameter of the angle floating positioning pin of the external spline ring gauge support plate to achieve angle floating of the external spline detection ring gauge.

[0008] In an embodiment of the present application, the lower part of the external spline ring gauge support plate is provided with an extended flange in contact with the shaft diameter reference. During downward operation of the detection gauge and workpiece relative motion mechanism from the middle position to the lower position, the extended flange is in contact with the axial reference of the external spline workpiece, and then slips through the axial positioning reference elastic floating mechanism to ensure reliable contact between the two and eliminate the axial size error of the workpiece length and the center positioning.

[0009] In an embodiment of the present application, the inner spline positioning detection mechanism comprises a quick-change lower center or lower positioning ring and a flat surface, an inner spline plug gauge assembly, and a mounting bracket; the inner spline plug gauge assembly comprises an inner spline plug gauge, a plug gauge connecting plate, and a coupling screw; the lower part of the inner spline plug gauge is provided with a guide part outer diameter and a chamfer matched with the small diameter of the inner spline of the workpiece, and is provided with an outer spline structure according to the inner spline parameters of the workpiece; the upper part of the inner spline plug gauge is concentrically arranged with the plug gauge connecting plate and is coupled by the coupling screw; the outer diameter of the plug gauge connecting plate is matched with the inner clamping sleeve, and is provided with a floating limiting hole matched with the outer diameter of the floating positioning pin of the upper corner of the mounting bracket, so as to achieve the angular floating of the inner spline plug gauge assembly.

[0010] In an embodiment of the present application, the workpiece angle positioning rotary drive mechanism comprises a second drive motor arranged on the lower mounting plate, a material receiving lifting cylinder, a drive shaft system, and a material receiving mechanism; the material receiving mechanism is driven by the material receiving lifting cylinder to realize the lifting of the workpiece; when the workpiece is lowered to the lower position and contacts the workpiece positioning lower center, the spring in the spline force detection mechanism generates a downward pressure when the detection gauge relative motion mechanism automatically operates to the middle position, the drive shaft system is driven by the second drive motor to drive the workpiece to rotate forward and reverse through friction, and the spline detection gauge enters the spline of the workpiece.

[0011] In an embodiment of the present application, the spline force detection mechanism comprises a pressing tool, a force spring, a bolt and a gasket, a large-range sensor, a sensor base, and a balance spring; the bolt and the gasket are installed on the clamping sleeve through the through hole of the pressing tool in the front part of the force spring bolt, the force spring presses the pressing tool downward and presses the spline detection gauge downward, the lower mounting plate is coupled with the clamping sleeve through a screw, and the balance spring balances the weight of the pressing tool and the spline detection gauge.

[0012] In an embodiment of the present application, the clamp spring groove detection unit comprises a workpiece upper and lower center positioning mechanism, which comprises a hand wheel, a second ball screw, a second linear bearing, a guide rod, a screw rod locking block, an upper center driving cylinder, an upper compression spring, an upper center, a lower center, a lower compression spring and a lower center driving cylinder, the second ball screw and the guide rod are both mounted on a lower mounting plate, the upper center driving cylinder is connected to the second ball screw and the guide rod through a lifting plate, the upper center driving cylinder pushes the upper compression spring to drive the upper center to extend downward and then to enter the center hole of the workpiece, after positioning, the lower center driving cylinder extends to push the lower compression spring to drive the lower center to move upward and enter the lower center positioning hole of the workpiece, after the elastic force of the lower compression spring overcomes the mass of the mechanism and the mass of the workpiece, the elastic force is greater than that of the upper compression spring, a upward thrust is generated to accurately position the axial thrust surface of the workpiece on the replaceable axial positioning block; the second ball screw can be adjusted by rotating the hand wheel to switch the detection of workpieces of different lengths.

[0013] In an embodiment of the present application, the clamp spring groove detection unit comprises a position detection mechanism, which comprises a support frame and an axial positioning driving cylinder provided on the support frame, and the axial positioning driving cylinder is connected with a replaceable axial positioning block; an upper side of the axial positioning driving cylinder is provided with a replaceable clamp spring groove detection gauge, the replaceable clamp spring groove detection gauge is mounted on a vertical up-down floating mechanism and a left-right horizontal floating mechanism, the vertical up-down floating mechanism comprises a lifting driving cylinder, a lowering driving cylinder, a vertical up-down balance spring group and a third linear bearing, the left-right horizontal floating mechanism comprises a left-right horizontal linear slide and a left-right centering spring adjusting mechanism, a push spring is connected to a clamp spring groove measurement double-stroke cylinder, a through-end monitoring proximity switch and an end monitoring proximity switch are provided on one side of the push spring, accurate cooperation between the replaceable clamp spring groove detection gauge and the workpiece to be detected is realized to achieve through-end detection of the diameter size of the clamp spring groove of the workpiece, the replaceable clamp spring groove detection gauge can enter the clamp spring groove of the external spline workpiece, through the sequential actions of the lifting driving cylinder and the lowering driving cylinder and through the up-down position value of the displacement sensor, comparison detection is performed with the known sample part / calibration part value to realize quantitative detection of the groove width size and the groove position size.

[0014] The above technical solutions of the present application have the following advantages compared with the prior art:

[0015] High flexibility of production capacity can be provided. Through the internal / external spline automatic detection unit, combined with the angular phase floating detection ring gauge / plug gauge and the quick replacement mechanism, the collinear production of internal / external spline shaft workpieces can be realized. In this way, the production efficiency can be improved, and the conversion time and downtime of the production line can be reduced.

[0016] The precise rotary driving mechanism can reduce the friction when the spline ring gauge / plug gauge is inserted into the workpiece. This can ensure the true insertion force during measurement, and improve the accuracy of measurement.

[0017] The relative motion mechanism between the ring gauge / plug gauge and the workpiece under detection, including the upper position, alignment position and lower position, can realize the precise positioning and relative motion of the workpiece under detection. This can ensure the accuracy of detection, and can detect each position of the workpiece.

[0018] The large-range high-resolution displacement sensor and the insertion force detection mechanism can monitor the real-time value and pattern of the insertion force of the spline gauge at each position of the workpiece in real time. This can provide accurate insertion force values, and can save the insertion force values of the spline use area, facilitating subsequent analysis and evaluation.

[0019] The detection force, alignment force, deburring force and other parameters corresponding to different models can be called according to different models, realizing the flexibility and numerical control of the equipment. This can adapt to the needs of different models and different workpieces, and improve the flexibility of production.

[0020] The wear of the tool of the spline machining equipment can be monitored and automatically compensated. By detecting the force value during the insertion of the gauge into the spline, the maintenance personnel can be reminded to replace and maintain the tool in time, avoiding the batch rejection of products due to tool wear.

[0021] The detection and deburring function is provided. The turned edge burrs after spline machining can be detected and removed on the basis of accurate detection of insertion force. This can improve the efficiency and quality of machining, and ensure that the products meet the quality standards. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the content of the application more easily understood, the application will be further described in detail below according to the specific embodiments of the application and in conjunction with the drawings.

[0023] Figure 1 is the overall structure diagram of the detection equipment of the application.

[0024] Figure 2 is the relative motion mechanism between the detection gauge and the workpiece and the special parts for positioning / detecting external spline.

[0025] Figure 3 is the structure schematic diagram of the external spline positioning / detecting conversion parts and the angle positioning rotary driving mechanism of the workpiece under detection.

[0026] Figure 4 is the structure schematic diagram of the angle floating and positioning mode of the external spline detection ring gauge.

[0027] Figure 5It is the internal spline positioning / detection transformation part structure schematic diagram of the application.

[0028] Figure 6 It is the internal spline detection plug gauge assembly angular floating and the detected workpiece internal spline hole guiding and positioning mode structure schematic diagram of the application.

[0029] Figure 7 It is the spline force detection mechanism structure schematic diagram of the application.

[0030] Figure 8 It is the spring retaining groove width / groove bottom diameter / groove position detection unit structure schematic diagram of the application.

[0031] Figure 9 It is the workpiece upper and lower center positioning mechanism structure schematic diagram of the application.

[0032] Figure 10 It is the spring retaining groove width / groove bottom diameter / groove position detection mechanism structure schematic diagram of the application.

[0033] Figure 11 It is the spring retaining groove width / groove bottom diameter / groove position detection mechanism structure schematic diagram of the application.

[0034] Figure 12 It is the external spline shaft workpiece (with spring retaining groove axial limiting) structure schematic diagram of the application.

[0035] Figure 13 It is the external spline shaft workpiece (two side splines, one side with axial limiting) structure schematic diagram of the application.

[0036] Figure 14 It is the internal spline (with spring retaining groove axial limiting) structure schematic diagram of the application.

[0037] Description of the drawing marks of the specification:

[0038] 1, detection machine base; 2, spline automatic detection unit; 3, spring retaining groove detection unit; 4, workpiece transfer mechanism; 5, NG removal channel; 6, operation box; 7, inlet motorized channel; 8, outlet motorized channel;

[0039] A1, first ball screw; A2, first drive motor; A3, handwheel screw; A4, coarse adjustment scale; A5, upper and lower coarse adjustment mounting plate; A6, adjusting nut; A7, measurement part support; A8, clamping sleeve; A9, spline gauge moving mounting plate; A10, lower mounting plate; A11, detection machine frame;

[0040] B00, external spline workpiece; B1, workpiece positioning lower center; B2, external spline ring gauge support plate; B2-1, angular floating positioning pin; B3, external spline detection ring gauge; B4, workpiece positioning upper center; B5, support plate fixing screw; B6, axial positioning reference elastic floating mechanism; B7, upper center pressing spring; B8, upper center elastic compression rod; B9, linear sliding bearing; B10, upper center lifting compression cylinder;

[0041] C00, internal spline workpiece; C1, quick change type lower center or lower positioning ring and flat surface; C2, internal spline plug gauge assembly; C2-1, internal spline plug gauge; C2-2, plug gauge connecting plate; C2-3, coupling screw; C3, mounting support plate;

[0042] C2-1.1, guide portion outer diameter and chamfer; C2-1.2, external spline structure; C2-1.3, upper portion; C3.1, angular floating positioning pin;

[0043] D1, second driving motor; D2, material receiving lifting cylinder; D3, driving shaft system; D4, material receiving mechanism;

[0044] E1, compression tool; E2, force measuring spring; E3, bolt and washer; E4, large range sensor; E5, sensor base; E6, balance spring;

[0045] F1, workpiece upper and lower center positioning mechanism; F2, position detection mechanism;

[0046] F1-1, hand wheel; F1-2, second ball screw; F1-3, second linear bearing; F1-4, guide rod; F1-5, screw locking block; F1-6, upper center driving cylinder; F1-7, upper compression spring; F1-8, upper center; F1-9, lower center; F1-10, lower compression spring; F1-11, lower center driving cylinder;

[0047] F2-1, change type adjusting nut; F2-2, double stroke cylinder for measuring snap spring groove; F2-3, linear guide rail for forward and backward movement; F2-4, axial positioning driving cylinder; F2-5, support frame; F2-6, replaceable axial positioning block; F2-7, through end monitoring proximity switch; F2-8, end monitoring proximity switch; F2-9, push spring; F2-10, left and right horizontal linear slider; F2-11, left and right centering spring adjusting mechanism; F2-12, displacement sensor; F2-13, vertical up and down balance spring set; F2-14, third linear bearing; F2-15, jacking driving cylinder; F2-16, lowering driving cylinder; F2-17, replaceable snap spring groove detection gauge. DETAILED DESCRIPTION

[0048] The present application will be further described below in conjunction with the drawings and specific embodiments so that those skilled in the art can better understand and implement the present application, but the embodiments are not intended to limit the present application.

[0049] In the present application, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical solutions of the present application, and is not intended to indicate or imply that the indicated technical features must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0050] In the present application, the meaning of "several" is one or more, and the meaning of "multiple" is two or more. "Greater than", "less than", "more than" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In the description of the present application, if "first" and "second" are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0051] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected, or can be electrically connected or capable of communicating with each other; can be the communication or interaction relationship between two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solutions.

[0052] Referring to Figure 1 As shown in the drawings, the flexible multifunctional numerical control spline and spring slot detection equipment of the present application comprises a detection machine base body 1, a spline automatic detection unit 2, a spring slot detection unit 3, an NG removal channel 5, a workpiece transfer mechanism 4, an inlet motorized channel 7 and an outlet motorized channel 8 are installed on the detection machine base body 1, the spline automatic detection unit 2 is used to realize the type switching of inner / outer spline, the spring slot detection unit 3 is used to realize the position detection of the width, bottom diameter and position of the outer spline spring slot, an operation box 6 is installed on the protective net of the detection machine base body 1, and an electrical control box and a pneumatic element box are respectively arranged on the front and rear parts below the detection machine base body 1.

[0053] Referring to Figures 1 to 10As shown, in some embodiments, the spline automatic detection unit 2 comprises a detection gauge and workpiece relative motion mechanism, an outer spline positioning detection mechanism, an inner spline positioning detection mechanism, a detected workpiece angle setting rotary drive mechanism, and a spline force detection mechanism. The outer spline positioning detection mechanism is used to realize workpiece outer spline detection. The inner spline positioning detection mechanism is used to realize workpiece inner spline detection. The outer spline positioning detection mechanism and the inner spline positioning detection mechanism are selectively installed. The detection gauge and workpiece relative motion mechanism is used to realize positioning with the detected workpiece during running from the upper position to the middle position.

[0054] Referring to Figure 2 As shown, in some embodiments, the detection gauge and workpiece relative motion mechanism comprises a detection rack A11, which is installed with a lower mounting plate A10, the lower mounting plate A10 is installed with a coarse adjustment scale A4 and a measuring part support A7, the lower mounting plate A10 is rotationally connected with a handwheel screw A3, an up-down coarse adjustment mounting plate A5 is connected to the handwheel screw A3 through an adjusting nut A6, the measuring part support A7 comprises a first linear bearing and a guide rod, the up-down coarse adjustment mounting plate A5 is slidably connected to the guide rod through the first linear bearing, a spline gauge moving mounting plate A9 is connected with a first ball screw A1, the first ball screw A1 is driven to rotate by a first drive motor A2, and the spline gauge moving mounting plate A9 is installed with a clamping sleeve A8.

[0055] Referring to Figure 3 As shown, in some embodiments, the outer spline positioning detection mechanism comprises a workpiece positioning lower center B1, an outer spline ring gauge support plate B2, an outer spline detection ring gauge B3, a workpiece positioning upper center B4, an axial positioning reference elastic floating mechanism B6, an upper center pressing spring B7, an upper center elastic pressing rod B8, and an upper center lifting and pressing cylinder B10. The upper center elastic pressing rod B8 is slidably connected to the up-down coarse adjustment mounting plate A5 through a linear sliding bearing B9, the workpiece positioning upper center B4 is connected to the upper center elastic pressing rod B8, the upper center lifting and pressing cylinder B10 drives the upper center elastic pressing rod B8 and the workpiece positioning upper center B4 to move downward through the upper center pressing spring B7, and the workpiece positioning upper center B4 is elastically positioned and pressed with the upper center hole of the outer spline workpiece B00. The workpiece positioning lower center B1 is connected to the lower mounting plate A10 and is positioned with the lower center hole of the outer spline workpiece B00 to realize the centering of the outer spline workpiece B00. The outer spline ring gauge support plate B2 and the outer spline detection ring gauge B3 are sequentially connected to the workpiece positioning upper center B4. The outer diameter of the upper center F1-8 is matched with the small diameter of the outer spline detection ring gauge B3 to make the outer spline detection ring gauge B3 concentric with the outer spline workpiece B00. The design angle of the outer spline detection ring gauge B3 is matched with the outer diameter of the angle relative floating positioning pin B2-1 of the outer spline ring gauge support plate B2 to achieve the angle relative floating of the outer spline detection ring gauge B3.

[0056] Referring toFigure 4 As shown, in some embodiments, the lower part of the outer spline ring gauge holder plate B2 is provided with an extended flange in contact with the shaft diameter reference. When the detection gauge and the workpiece relative motion mechanism run from the middle position to the lower position and contact the outer spline workpiece B00 axial reference, the axial positioning reference elastic floating mechanism B6 slips to ensure reliable contact between the two and eliminate the axial size error of the workpiece length and the center positioning.

[0057] Referring to Figure 4 As shown, in some embodiments, the inner spline positioning detection mechanism includes a quick-change lower center or lower positioning ring and a flat surface C1, an inner spline plug gauge assembly C2, and a mounting holder C3. The inner spline plug gauge assembly C2 includes an inner spline plug gauge C2-1, a plug gauge connecting plate C2-2, and a coupling screw C2-3. The lower part of the inner spline plug gauge C2-1 is provided with a guide part outer diameter and a chamfer C2-1.1 matched with the small diameter of the inner spline of the inner spline workpiece C00, and an outer spline structure C2-1.2 is set according to the inner spline parameters of the inner spline workpiece C00. The upper part C2-1.3 of the inner spline plug gauge C2-1 is concentrically arranged with the plug gauge connecting plate C2-2 and is coupled by the coupling screw C2-3. The outer diameter of the plug gauge connecting plate C2-2 is matched with the inner clamping sleeve, and the floating limiting hole matched with the outer diameter of the floating positioning pin C3.1 of the upper corner of the mounting holder C3 is arranged to achieve the angular floating of the inner spline plug gauge assembly C2.

[0058] Referring to Figure 5 As shown, in some embodiments, the detected workpiece angle rotation driving mechanism includes a second driving motor D1 arranged on the lower mounting plate A10, a material receiving lifting cylinder D2, a driving shaft system D3, and a material receiving mechanism D4. The material receiving mechanism D4 is driven by the material receiving lifting cylinder D2 to realize the lifting of the detected workpiece. When the detected workpiece is lowered to the lower position and contacts the workpiece positioning lower center B1, the spring in the spline force detection mechanism of the detection gauge and the workpiece relative motion mechanism automatically runs to the middle position to generate downward pressure, the driving shaft system D3 is driven by the second driving motor D1 to drive the workpiece to rotate forward and reverse by friction force, and the spline detection gauge enters the spline of the workpiece.

[0059] In some embodiments, the spline force detection mechanism includes a pressing tool E1, a force spring E2, a bolt and a washer E3, a large range sensor E4, a sensor base E5, and a balance spring E6. The bolt and the washer E3 are installed on the clamping sleeve A8 through the through hole on the pressing tool E1, the bolt front part of the force spring E2, and the lower mounting plate is coupled with the clamping sleeve A8 by screws. The balance spring E6 balances the weight of the pressing tool E1 and the spline detection gauge.

[0060] Referring to Figure 8As shown, in some embodiments, the clamp spring groove detection unit 3 comprises a workpiece upper and lower center positioning mechanism F1, which comprises a hand wheel F1-1, a second ball screw F1-2, a second linear bearing F1-3, a guide rod F1-4, a screw rod locking block F1-5, an upper center driving cylinder F1-6, an upper compression spring F1-7, an upper center F1-8, a lower center F1-9, a lower compression spring F1-10, and a lower center driving cylinder F1-11. The second ball screw F1-2 and the guide rod F1-4 are both mounted on the lower mounting plate A10. The upper center driving cylinder F1-6 is connected to the second ball screw F1-2 and the guide rod F1-4 through a lifting plate. The upper center F1-8 is pushed out downward by the upper center driving cylinder F1-6 to top into the center hole of the workpiece after the upper compression spring F1-7 is pushed. After positioning, the lower center driving cylinder F1-11 is extended to push the lower compression spring F1-10 to drive the lower center F1-9 to move upward and top into the lower center positioning hole of the workpiece. After the elastic force of the lower compression spring F1-10 overcomes the mass of the mechanism and the mass of the workpiece, the elastic force is greater than the elastic force of the upper compression spring F1-7, a upward thrust is generated to accurately position the axial thrust surface of the workpiece on the replaceable axial positioning block F2-6. By rotating the hand wheel F1-1, the second ball screw F1-2 can be adjusted to switch the detection of workpieces of different lengths.

[0061] Referring to Figures 9 to 11As shown, in some embodiments, the clamp spring groove detection unit 3 comprises a position detection mechanism F2, which comprises a support frame F2-5 and an axial positioning drive cylinder F2-4 arranged on the support frame F2-5, and the axial positioning drive cylinder F2-4 is connected with a replaceable axial positioning block F2-6; the upper side of the axial positioning drive cylinder F2-4 is provided with a replaceable clamp spring groove detection gauge F2-17, which is installed on a vertical up-down floating mechanism and a left-right horizontal floating mechanism; the vertical up-down floating mechanism comprises a jacking drive cylinder F2-15, a downward driving cylinder F2-16, a vertical up-down balance spring group F2-13 and a third linear bearing F2-14; the left-right horizontal floating mechanism comprises a left-right horizontal linear slide F2-10 and a left-right centering spring adjusting mechanism F2-11; the clamp spring groove measuring double-stroke cylinder F2-2 is connected with a push spring F2-9, one side of the push spring F2-9 is provided with a through-end monitoring proximity switch F2-7 and a stop-end monitoring proximity switch F2-8, so as to realize the accurate cooperation between the replaceable clamp spring groove detection gauge F2-17 and the workpiece to be detected, so as to achieve the through-stop detection of the diameter size of the clamp spring groove of the workpiece, and the replaceable clamp spring groove detection gauge F2-17 can enter the clamp spring groove of the external spline workpiece B00, and through the sequential actions of the jacking drive cylinder F2-15 and the downward driving cylinder F2-16 and the up-down position value taken by the displacement sensor F2-12, the known sample part / calibration part value is compared and detected, so as to realize the quantitative detection of the groove width size and the groove position size.

[0062] When working, after the workpiece is carried into the position, the axial positioning drive cylinder F2-4 extends to push the replaceable axial positioning block F2-6 to extend forward. The upper top drive cylinder F1-6 extends to push the upper compression spring F1-7 to drive the upper top F1-8 to extend downward and then enter the center hole of the workpiece. After reaching the position, the lower top drive cylinder F1-11 extends to push the lower compression spring F1-10 to drive the lower top F1-9 to move upward and enter the lower center positioning hole of the workpiece. At this time, the elastic force of the lower compression spring F1-10 is slightly greater than the elastic force of the upper compression spring F1-7 after overcoming the mass of the mechanism and the mass of the workpiece, so as to generate an upward thrust to accurately position the axial thrust surface (reference surface) of the workpiece on the replaceable axial positioning block F2-6. The first stroke of the clamp spring groove measuring double-stroke cylinder F2-2 pushes the compression spring to drive the replaceable clamp spring groove detection gauge F2-17 to advance to the through-end. During the entering process, the left-right horizontal linear slide F2-10 and the up-down linear bearing are slightly moved to adaptively align the clamp spring groove position of the workpiece. The through-end monitoring proximity switch F2-7 determines whether the bottom diameter of the clamp spring groove of the workpiece exceeds the upper limit, and the NG workpiece exceeding the upper limit is moved to the NG removal channel 5. When the upper limit is not exceeded, the jacking drive cylinder F2-15 and the downward driving cylinder F2-16 are sequentially actuated, and the up-down position value taken by the displacement sensor F2-12 is compared and detected with the known sample part / calibration part value, so as to realize the quantitative detection of the groove width size and the groove position size of the clamp spring groove of the workpiece. Figure 12Middle size C) and the quantitative detection of the groove position size (one or more of the middle sizes B1 / B2 / B3). Figure 12 The detection unit detects the width of the snap spring groove and the groove position. If the detection result is OK, the workpiece is moved to the OK removal channel 5. If the detection result is NG, the workpiece is moved to the NG removal channel 5. If the bottom diameter of the snap spring groove is less than the lower limit, the workpiece is moved to the NG removal channel 5. If the bottom diameter of the snap spring groove is not less than the lower limit, the detection is completed, and the cylinders are returned to the original positions in sequence. The upper positioning top of the workpiece positioning mechanism F1 can be adjusted by rotating the hand wheel F1-1 to drive the ball screw.

[0063] The relative motion mechanism of the detection ring gauge (detecting external spline) and the plug gauge (detecting internal spline) and the workpiece to be detected includes the upper position (the detection ring gauge / plug gauge is separated from the workpiece to be detected), the alignment position (the detection ring gauge / plug gauge is angularly floating and axially pressed on the workpiece to be detected), and the lower position (the detection ring gauge is in contact with the workpiece to be detected at the root of the external spline, and the plug gauge is through the internal spline of the workpiece to be detected). The detection area is from the alignment position to the lower position area (including the plug gauge through the internal spline of the workpiece to be detected). The detection ring gauge / plug gauge is angularly floating and moves up and down, the workpiece to be detected is accurately positioned, and the high-precision angle rotation scheme is adopted. The relative motion mechanism of the detection ring gauge / plug gauge and the workpiece to be detected is realized by the up / down motion of the workpiece to be detected, or the workpiece posture and the detection mechanism are still covered by the claims of the present application.

[0064] The working principle of the present application is as follows:

[0065] The detection ring gauge (detecting external spline) and the plug gauge (detecting internal spline) are driven by a servo (or step) motor to move relative to the workpiece to be detected. There are three positions: the upper position (the detection ring gauge / plug gauge is separated from the workpiece to be detected), the alignment position (the detection ring gauge / plug gauge is angularly floating and axially pressed on the workpiece to be detected), and the lower position (the detection ring gauge is in contact with the workpiece to be detected at the root of the external spline, and the plug gauge is through the internal spline of the workpiece to be detected). The detection area is from the alignment position to the lower position area, that is, the spline length (including the plug gauge through the internal spline of the workpiece to be detected). The detection ring gauge / plug gauge is angularly floating and moves up and down. The position of the ring gauge can be calibrated, the workpiece to be detected is accurately positioned by the up / down top F1-9, and the high-precision angle rotation is realized by the servo motor. The insertion force of the detection ring gauge / plug gauge is minimized, and the insertion is the most smooth.

[0066] During the inserting process, the inserting force high-precision detection mechanism is used to accurately calculate the size of the inserting force, specifically as follows: a large-range high-resolution displacement sensor F2-12 (inductive, grating / capacitive grating, laser reflection type displacement sensor F2-12) is firstly associated with a measuring bench with a China Metrology Accreditation (CMA) certificate (as an option, without the certificate, it should still be covered by the claims of the present application, the same below), and then the detected force is associated with an electronic scale with a CMA certificate; further, the correlation formula of the displacement sensor F2-12 and the inserting force is established; the real-time value and the graph of the inserting force at each position of the spline rule inserted into the workpiece are displayed, and the inserting force value of the spline use area is saved.

[0067] The outer spline snap spring groove width / groove bottom diameter / groove position detection is accurately positioned by the workpiece upper and lower center positioning mechanism F1, the elastic force of the lower compression spring F1-10 is slightly larger than the elastic force of the upper compression spring F1-7 after overcoming the mass of the mechanism and the mass of the workpiece, so that the workpiece can float up and down along the axial center; the upward floating of the workpiece can accurately position the axial thrust surface (reference surface) of the workpiece on the replaceable axial positioning block F2-6. The snap spring groove measurement double-stroke cylinder F2-2 first stroke pushes the compression spring to drive the replaceable snap spring groove detection gauge F2-17 to advance to the through end, during the process, the left and right horizontal linear sliders F2-10 and the upper and lower linear bearing micro-movement self-adaptive alignment workpiece snap spring groove position are promoted by the front guide angle of the clamping plate, the lifting and pulling driving cylinders F2-16 are sequentially actuated, and the values at the upper and lower positions are taken by the displacement sensor F2-12, which are compared with the known sample part / calibration part value for detection, to realize qualitative detection of the groove bottom diameter and quantitative detection of the groove width and groove position size; after the measurement is completed, the cylinders return to the original position in order, and the next workpiece measurement is started.

[0068] The detection process of the present application is as follows:

[0069] The workpiece enters the entrance motorized material channel 7, and the photoelectric switch judges whether there is a workpiece; when there is a workpiece, the next workpiece is prevented from entering.

[0070] The workpiece transfer mechanism 4 adopts a step type multi-gas claw mode, which clamps the material, rises, moves forward, descends, loosens the material, and moves backward to complete one workpiece step.

[0071] When there is a workpiece at station 2 of the automatic internal / external spline detection unit: the upper center cylinder F1-8 descends into the center hole of the workpiece, the receiving tray cylinder descends, and the workpiece enters the lower center cylinder F1-9. At this time, the upper and lower centers F1-9 simultaneously position the workpiece. The lifting servo / stepper motor drives the spline gauge to descend to the center position / spline alignment position. The system, according to the "alignment force" setting value and the rotation servo / stepper motor setting angle, rotates forward / reverses until the spline gauge enters the workpiece. The lifting servo / stepper motor continues to move the spline gauge downwards, dynamically monitoring the "insertion force" throughout the downward movement. When the insertion force is greater than the set "deburring force", it automatically stops and returns upwards, automatically performing a second descent detection. If both descents are greater than the "deburring force", the workpiece is marked as an NG (not good) part and placed in the NG material channel of the next station. Workpieces whose "insertion force" is less than the set "detection force" value throughout the downward movement are marked as OK parts.

[0072] If the workpiece is an external spline workpiece of model B00 and has a snap ring groove, the external spline snap ring groove width / groove bottom diameter / snap ring groove detection unit operates at 3 stations: the axial positioning drive cylinder F2-4 extends, pushing the axial positioning block forward, the upper center drive cylinder F1-6 extends, pushing the upper compression spring F1-7 to drive the upper center F1-8 to extend downward and enter the upper center hole of the workpiece, after it is in place, the lower center drive cylinder F1-11 extends, pushing the lower compression spring F1-10 to drive the lower center F1-9 to move upward and enter the lower positioning hole of the workpiece. Because the lower spring has a large elastic force, it drives the workpiece to move upward, so that the axial thrust surface (datum surface) of the workpiece is accurately positioned on the replaceable axial positioning block F2-6.

[0073] The first stroke of the double-stroke cylinder F2-2 for measuring the snap ring groove pushes the compression spring, which in turn drives the interchangeable snap ring groove inspection gauge F2-17 forward to the through end. During the forward movement, the forward guide angle on the snap ring groove inspection gauge causes the left and right horizontal linear sliders F2-10 and the upper and lower linear bearings to move slightly to adaptively align the snap ring groove position of the workpiece. The through end monitoring proximity switch F2-7 determines whether the bottom diameter of the workpiece groove is OK. If both the second and third inspections are NG, it is treated as an NG part and placed in the NG material channel of the next station. If the bottom diameter of the groove is OK, the lifting drive cylinder F2-15 and the pulling drive cylinder F2-16 act sequentially and take values ​​at the upper and lower positions through the displacement sensor F2-12. The values ​​are compared with the known values ​​of the sealed sample / calibrated part to perform quantitative detection of the groove width and groove position dimensions. The groove width and groove position dimensions are judged against their respective set tolerances to determine whether they are OK. If both the second and third inspections are NG, it is treated as an NG part and placed in the NG material channel of the next station. If OK, the measurement ends and each cylinder returns to its original position in an orderly manner to enter the next workpiece measurement.

[0074] Finally, it should be noted that the above detailed description is merely illustrative of the technical solutions of the present application and is not limiting, and although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A testing device for flexible multifunctional CNC splines and snap ring grooves, characterized in that, The machine includes a testing machine base (1), on which are installed an automatic spline testing unit (2), a snap ring groove testing unit (3), an NG removal channel (5), a workpiece transfer mechanism (4), an inlet motorized channel (7), and an outlet motorized channel (8). The automatic spline testing unit (2) is used to realize the switching of internal / external splines. The snap ring groove testing unit (3) is used to realize the position detection of the snap ring groove width, groove bottom diameter, and groove position of the external spline. An operation box (6) is installed on the protective net of the testing machine base (1). An electrical control box and a pneumatic component box are respectively provided in the front and rear parts below the testing machine base (1). The automatic spline detection unit (2) includes a detection gauge and workpiece relative motion mechanism, an external spline positioning detection mechanism, an internal spline positioning detection mechanism, a workpiece fixed angle rotation drive mechanism, and a spline force measurement detection mechanism. The external spline positioning detection mechanism is used to detect the external spline of the workpiece, and the internal spline positioning detection mechanism is used to detect the internal spline of the workpiece. The external spline positioning detection mechanism and the internal spline positioning detection mechanism are selected by mutual selection. The detection gauge and workpiece relative motion mechanism is used to position the workpiece during the process of moving from the upper position to the middle position. The relative motion mechanism between the inspection gauge and the workpiece includes an inspection frame (A11), a lower mounting plate (A10) mounted on the inspection frame (A11), a coarse adjustment scale (A4) and a measuring unit bracket (A7) mounted on the lower mounting plate (A10), a handwheel screw (A3) rotatably connected to the lower mounting plate (A10), upper and lower coarse adjustment mounting plates (A5) connected to the handwheel screw (A3) via adjusting nuts (A6), the measuring unit bracket (A7) including a first linear bearing and a guide rod, the upper and lower coarse adjustment mounting plates (A5) slidably connected to the guide rod via the first linear bearing, a spline gauge moving mounting plate (A9) connected to a first ball screw (A1), the first ball screw (A1) being driven to rotate by a first drive motor (A2), and a clamping sleeve (A8) mounted on the spline gauge moving mounting plate (A9). The spline force measuring and testing mechanism includes a clamping fixture (E1), a force measuring spring (E2), a bolt and washer (E3), a large-range sensor (E4), a sensor base (E5), and a balance spring (E6). The bolt and washer (E3) are inserted into the force measuring spring (E2). The front part of the bolt passes through a hole on the clamping fixture (E1) and is installed on the clamping sleeve (A8). The force measuring spring (E2) presses down on the clamping fixture (E1), and the clamping fixture (E1) presses down on the external or internal spline test gauge. The lower mounting plate is connected to the clamping sleeve (A8) by screws. One end of the balance spring (E6) is connected to the spline gauge moving mounting plate (A9), and the other end of the balance spring (E6) is connected to the clamping fixture (E1). The balance spring (E6) balances the weight of the clamping fixture (E1) and the external or internal spline test gauge itself.

2. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 1, characterized in that, The external spline positioning and detection mechanism includes a workpiece positioning lower center (B1), an external spline ring gauge support plate (B2), an external spline detection ring gauge (B3), a workpiece positioning upper center (B4), an axial positioning reference elastic floating mechanism (B6), an upper center pressing spring (B7), an upper center elastic pressure rod (B8), and an upper center lifting and pressing cylinder (B10). The upper center elastic pressure rod (B8) is slidably connected to the upper and lower coarse adjustment mounting plates (A5) via a linear sliding bearing (B9). The workpiece positioning upper center (B4) is connected to the upper center elastic pressure rod (B8). The upper center lifting and pressing cylinder (B10) pushes the upper center elastic pressure rod (B8) and the workpiece positioning upper center (B4) downward through the upper center pressing spring (B7), and moves them together with the external spline workpiece (B00). The upper center hole of the workpiece is elastically positioned and pressed. The lower center (B1) of the workpiece positioning is connected to the lower mounting plate (A10) and positioned with the lower center hole of the external spline workpiece (B00) to achieve centering of the external spline workpiece (B00). The external spline ring gauge support plate (B2) and the external spline detection ring gauge (B3) are sequentially connected to the upper center (B4) of the workpiece positioning. The outer diameter of the upper center (B4) of the workpiece positioning is matched with the minor diameter of the external spline detection ring gauge (B3) to make the external spline detection ring gauge (B3) concentric with the external spline workpiece (B00). The external spline detection ring gauge (B3) is designed with an angular phase floating limit hole that matches the outer diameter of the angular phase floating positioning pin (B2-1) of the external spline ring gauge support plate (B2) to achieve angular phase floating of the external spline detection ring gauge (B3).

3. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 2, characterized in that, The lower part of the external spline ring gauge support plate (B2) is provided with an extended flange that contacts the shaft diameter reference. When the external spline detection ring gauge (B3) and the workpiece relative motion mechanism move from the middle position to the lower position and come into contact with the axial reference of the external spline workpiece (B00), the two parts are made to contact through the axial positioning reference elastic floating mechanism (B6) to eliminate the axial dimension error of the workpiece length and the center positioning.

4. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 1, characterized in that, The internal spline positioning and testing mechanism includes a quick-change lower center or lower positioning ring and a plane (C1), an internal spline plug gauge assembly (C2), and a mounting plate (C3); the internal spline plug gauge assembly (C2) includes an internal spline plug gauge (C2-1), a plug gauge connecting plate (C2-2), and a connecting screw (C2-3); the lower part of the internal spline plug gauge (C2-1) is provided with a guide outer diameter and chamfer (C2-1.1) that mates with the minor diameter of the internal spline of the internal spline workpiece (C00), and according to the internal spline workpiece (C00), the internal spline positioning and testing mechanism includes a quick-change lower center or lower positioning ring and a plane (C1), an internal spline plug gauge assembly (C2-2), and a mounting plate (C3); the internal spline plug gauge assembly (C2-1) includes an internal spline plug gauge (C2-1), a plug gauge connecting plate (C2-2), and a mounting plate (C2-3); the lower part of the internal spline plug gauge (C2-1) is provided with a guide outer diameter and chamfer (C2-1.1) that mates with the minor diameter of the internal spline of the internal spline workpiece (C00), and the internal spline positioning and testing mechanism includes a quick-change lower center or lower positioning ring and a plane (C1), an internal spline plug gauge assembly (C00), and a mounting plate (C00) that mates with the minor diameter of the internal spline of the internal spline workpiece (C00), and the internal spline positioning and testing mechanism includes a quick-change lower center or lower positioning ring and a plane (C1), an internal spline plug gauge assembly (C2-1), and a mounting plate (C2-3). The internal spline parameter of the 00) is set with an external spline structure (C2-1.2). The upper part (C2-1.3) of the internal spline plug gauge (C2-1) is concentrically set with the plug gauge connecting plate (C2-2) and connected by the connecting screw (C2-3). The outer diameter of the plug gauge connecting plate (C2-2) is matched with the inner clamping sleeve, and a floating limit hole is provided that matches the outer diameter of the floating positioning pin (C3.1) at the upper corner of the mounting plate (C3) to achieve the angular floating of the internal spline plug gauge assembly (C2).

5. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 1, characterized in that, The workpiece rotation drive mechanism includes a second drive motor (D1), a receiving lifting cylinder (D2), a drive shaft system (D3), and a receiving mechanism (D4) mounted on the lower mounting plate (A10). The receiving mechanism (D4) lifts and lowers the workpiece under the drive of the receiving lifting cylinder (D2). When the workpiece is lowered to the lower position and contacts the workpiece positioning center (B1), the relative motion mechanism between the detection gauge and the workpiece automatically moves to the middle position. The spring in the spline force measuring detection mechanism generates downward pressure. The drive shaft system (D3) is driven by the second drive motor (D1) to drive the workpiece to rotate forward and backward at a fixed angle through friction, so that the internal or external spline detection gauge enters the spline of the workpiece.

6. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 1, characterized in that, The snap ring groove detection unit (3) includes a workpiece upper and lower center positioning mechanism (F1). The workpiece upper and lower center positioning mechanism (F1) includes a handwheel (F1-1), a second ball screw (F1-2), a second linear bearing (F1-3), a guide rod (F1-4), a screw locking block (F1-5), an upper center drive cylinder (F1-6), an upper compression spring (F1-7), an upper center (F1-8), a lower center (F1-9), a lower compression spring (F1-10), and a lower center drive cylinder (F1-11). The second ball screw (F1-2) and the guide rod (F1-4) are both mounted on the lower mounting plate (A10). The upper center drive cylinder (F1-6) is connected to the second ball screw (F1-2) and the guide rod through a lifting plate. (F1-4) The upper center drive cylinder (F1-6) pushes the upper compression spring (F1-7) to drive the upper center (F1-8) to extend downward and push into the center hole of the workpiece. After it is in place, the lower center drive cylinder (F1-11) extends and pushes the lower compression spring (F1-10) to drive the lower center (F1-9) to move upward and push into the lower center positioning hole of the workpiece. After the elastic force of the lower compression spring (F1-10) overcomes the mass of the mechanism and the mass of the workpiece, the elastic force is greater than the elastic force of the upper compression spring (F1-7), generating an upward thrust to accurately position the axial thrust surface of the workpiece on the interchangeable axial positioning block (F2-6). By turning the handwheel (F1-1), the position of the upper positioning center can be adjusted by driving the second ball screw (F1-2) to switch the detection of workpieces of different lengths.

7. The testing equipment for flexible multifunctional CNC splines and snap ring grooves according to claim 1, characterized in that, The snap ring groove detection unit (3) includes a position detection mechanism (F2), which includes a support frame (F2-5) and an axial positioning drive cylinder (F2-4) mounted on the support frame (F2-5). The axial positioning drive cylinder (F2-4) is connected to a replaceable axial positioning block (F2-6). A replaceable snap ring groove detection gauge (F2-17) is mounted on the upper side of the axial positioning drive cylinder (F2-4). The replaceable snap ring groove detection gauge (F2-17) is mounted on the vertical up-down floating mechanism and the horizontal left-right floating mechanism. The vertical up-down floating mechanism includes a lifting drive cylinder (F2-15), a pulling drive cylinder (F2-16), a vertical up-down balance spring assembly (F2-13), and a third linear bearing (F2-14). The horizontal left-right floating mechanism includes a horizontal left-right linear slider. (F2-10), left and right centering spring adjustment mechanism (F2-11), snap ring groove measuring double stroke cylinder (F2-2) connected to push spring (F2-9), push spring (F2-9) is provided with pass end monitoring proximity switch (F2-7) and stop end monitoring proximity switch (F2-8) on one side, realize the cooperation between the interchangeable snap ring groove detection gauge (F2-17) and the workpiece to be tested, so as to achieve the pass and stop detection of the snap ring groove diameter of the workpiece. The interchangeable snap ring groove detection gauge (F2-17) can enter the snap ring groove of the external spline workpiece (B00). Through the lifting drive cylinder (F2-15) and the pulling drive cylinder (F2-16) acting in sequence, and through the displacement sensor (F2-12) taking the value of the upper and lower position, it is compared with the known sealed sample / calibration part value to realize the quantitative detection of the groove width and groove position size.

Images