CN112525126A - Axial clearance detection device and method for plane thrust ball bearing - Google Patents
Axial clearance detection device and method for plane thrust ball bearing Download PDFInfo
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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Abstract
An automatic detection device for axial play of a bearing comprises a base, a feeding mechanism, a guiding and conveying mechanism, a clamping mechanism, a pressing mechanism, a lifting mechanism, a spring probe and a displacement probe, wherein the feeding mechanism, the guiding and conveying mechanism and the lifting mechanism are respectively connected to the base; the method is characterized in that the spring probe and the displacement probe are matched up and down to push and contact the workpiece to detect the floating range of the workpiece. The automatic feeding device replaces the traditional manual detection, realizes automatic feeding, loading and detection in the whole process, greatly improves the working efficiency, liberates workers, and is accurate and efficient.
Description
Technical Field
The invention relates to the technical field of bearing clearance measurement, in particular to axial clearance detection equipment of a plane thrust ball bearing and a method for measuring the axial clearance of the plane thrust ball bearing by using the device.
Background
A flat thrust ball bearing is a type of flat thrust bearing that includes a cage and a set of balls (typically 8) disposed within the cage with some play in the axial direction relative to the cage. The size of the axial play affects the performance and the service life of the flat thrust ball bearing, and therefore, it is required to control the axial play within a certain design range. This requires the axial play to be detected during production and if the value of the play of the spheres is outside the design range, the product is considered to be rejected. For the axial play detection of the plane thrust ball bearing, the prior art usually completes the axial play detection through manually operating a dial indicator, during the detection, the bottom of an indicator rod of the dial indicator presses a sphere to be detected to enable the sphere to be located at the lowest position, the reading of the dial indicator is read and recorded, then a special lever is utilized to jack up from the bottom of the sphere to enable the sphere to move to the highest position, then the reading of the dial indicator is read again, and finally the first reading is subtracted from the second reading, namely the corresponding play value of the sphere. And after all the spheres on the retainer are detected, the clearance values of all the spheres are within the design range, and the product is determined to be qualified. The detection mode has low efficiency and is easy to cause false detection due to human factors.
Disclosure of Invention
One of the technical objects of the present invention is to provide a device for detecting axial play of a planar thrust ball bearing, which can automatically detect the axial play of a ball in a retainer of the planar thrust ball bearing, and has the advantages of high detection efficiency, high accuracy and low false detection rate.
The specific technical scheme of the detection device is as follows:
the axial clearance detection equipment for the plane thrust ball bearing comprises a base, a feeding device, a detection execution device and a data acquisition device; the feeding device, the detection executing device and the data acquisition device are respectively connected to the base; the detection executing device comprises a guide conveying mechanism, a clamping mechanism, a pressing mechanism and a spring pressing head, wherein the clamping mechanism and the pressing mechanism are connected to the guide conveying mechanism and driven by the guide conveying mechanism to horizontally move along a guide conveying route, the clamping mechanism is rotatably connected to the guide conveying mechanism, and the spring pressing head is positioned in a workpiece clamping area of the clamping mechanism and connected with the pressing mechanism; the data acquisition device consists of a lifting mechanism and a displacement probe, and the displacement probe is connected to the lifting mechanism; the tail end of the feeding device is positioned below the guiding route of the guiding mechanism, so that the clamping mechanism can clamp the workpiece to be detected from the feeding device; the lifting mechanism is positioned below the guide route of the guide mechanism, so that the displacement probe can detect the axial clearance value of a ball in a workpiece.
Compared with the prior art, the invention has the advantages that the specific feeding device, the detection execution device and the data acquisition device are arranged on the base, the feeding device, the detection execution device and the data acquisition device have synergistic effect, the feeding device conveys a workpiece to be detected to a specified position for clamping by the clamping mechanism of the detection execution device, the clamping mechanism conveys the workpiece to a detection station by the guide mechanism after clamping the workpiece, then the spring pressure head on the detection execution device is matched with the displacement probe on the data acquisition device, the detection is finished when the workpiece is in a clamping state, the clearance value of a ball body is measured, and after the detection is finished, the workpiece is conveyed to the specified position by the guide mechanism for blanking.
Preferably, the pressing mechanism comprises a pressing cylinder, an ejector rod and a connecting disc, the pressing cylinder is connected to the guide mechanism, the upper end of the ejector rod is connected with a piston rod of the pressing cylinder, the lower end of the ejector rod extends to a workpiece clamping area of the clamping mechanism, the connecting disc is connected to the lower end of the ejector rod, and the spring pressure head is connected to the connecting disc.
Preferably, the clamping mechanism comprises an electric rotary table and a three-jaw cylinder, the electric rotary table is connected to the guide mechanism, the three-jaw cylinder is connected to the electric rotary table and can be driven by the electric rotary table to rotate, and the three-jaw cylinder is provided with a clamping jaw adapted to the workpiece.
Preferably, the number of the spring pressing heads and the number of the displacement probes are 4.
Preferably, the guide and feed mechanism comprises a mounting support, an electric linear sliding table and a moving seat, the mounting support is connected to the base, the electric linear sliding table is connected to the mounting support, the moving seat is connected to a sliding block of the electric linear sliding table, and the clamping mechanism and the pressing mechanism are connected to the moving seat.
Preferably, the lifting mechanism comprises a sliding table cylinder, a connecting seat and a fixing frame, the sliding table cylinder is connected to the base, the connecting seat is connected with a sliding table of the sliding table cylinder, and the fixing frame is connected to the connecting seat; the displacement probe is connected to the fixing frame.
Preferably, the feeding device comprises a motor, a feeding frame, a conveying belt shaft and a conveying belt, the conveying belt shaft is connected to the feeding frame, the conveying belt is wound on the conveying belt shaft, one conveying belt shaft is in transmission connection with the motor, and the motor is connected to the base or the feeding frame. The feeding device further comprises a pushing cylinder, a pushing arm, a lifting cylinder and a workpiece support platform, wherein the pushing cylinder and the lifting cylinder are respectively connected to the base or the feeding frame, the pushing arm is connected with the pushing cylinder, the workpiece support platform is connected with the lifting cylinder, and the pushing end of the pushing arm and the workpiece support platform are oppositely arranged and respectively located on two sides of the conveying belt. Further, a guide plate and a surrounding baffle are connected to the conveying end position of the conveying belt on the feeding frame; the guide and delivery plate serves as a material pushing arm to push a workpiece to a passing road section of the workpiece tray table, and the enclosing barrier is matched with the side part of the feeding frame to enclose and block the workpiece tray table. Further, a workpiece conveying in-place detection sensor is further arranged at the conveying tail end of the conveying belt on the feeding frame.
The optimized structure is easy to implement, high in reliability and beneficial to control and popularization.
Another technical object of the present invention is to provide a method for detecting an axial clearance of a flat thrust ball bearing, which has high detection efficiency and a low false detection rate.
The specific technical scheme of the detection method is as follows:
the method for detecting the axial clearance of the plane thrust ball bearing by adopting the automatic axial clearance detection device comprises the following steps,
firstly, a clamping mechanism clamps a workpiece from a feeding device and is driven to a detection station by a guide mechanism;
secondly, the lifting mechanism lifts the displacement probe to a detection position;
the clamping mechanism rotates to drive the workpiece to rotate, so that the displacement probe pushes the close ball on the workpiece to the highest position and is in contact with the lowest point of the surface of the ball, and the reading of the displacement probe is recorded;
driving a spring pressure head to press downwards by a pressing mechanism to press the ball body supported by the displacement probe to the lowest position, and recording the reading of the displacement probe at the moment again;
fifthly, making a difference between the reading of the displacement probe recorded in the step IV and the reading of the displacement probe recorded in the step III to obtain an axial play value of the corresponding sphere;
sixthly, the lifting mechanism returns to withdraw the displacement probe, and the pressing mechanism returns to withdraw the spring pressing head;
seventhly, continuously rotating the rotary table by a preset angle, repeating the steps from the sixth step to the sixth step until the axial play values corresponding to the spheres carried by all the workpieces are measured, and executing the step (I);
driving the three-jaw cylinder to a blanking station by the linear sliding table, and loosening and falling the workpiece by the three-jaw cylinder.
Compared with the prior art, the method provided by the invention has the advantages that the axial clearance of the plane thrust ball bearing is detected by using the detector according to specific steps, the detection efficiency is high, and the reliability is high.
Drawings
FIG. 1 is a schematic structural diagram of a detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram (orthographic projection) of a detection execution device according to an embodiment of the invention;
FIG. 3 is a schematic view of a partial structure of an embodiment of the present invention (the detection executing device is removed with the electric linear sliding table and the three-grab cylinder);
FIG. 4 is a schematic view of a jaw configuration according to an embodiment of the present invention;
FIG. 5 is a schematic view of the clamping jaw of FIG. 4 after clamping a workpiece;
FIG. 6 is a schematic view of a partial structure (feeding device) according to an embodiment of the present invention;
FIG. 7 is a schematic view of a partial structure (data acquisition device) according to an embodiment of the present invention;
the reference signs are: 1-base, 2-spring pressure head, 3-displacement probe, 4-blanking frame, a 1-pressing cylinder, a 2-ejector rod, a 3-connecting disc, b 1-electric turntable, b 2-three-jaw cylinder, b 3-clamping jaw, c 1-mounting bracket, c 2-electric linear sliding table, c 3-moving seat, d 1-sliding table cylinder, d 2-connecting seat, d 3-fixing frame, e 1-motor, e 2-feeding frame, e 3-conveying belt shaft, e 4-conveying belt, e 5-pushing cylinder, e 6-pushing arm, e 7-lifting cylinder, e 8-workpiece supporting table, e 9-guiding plate, e 10-enclosure, and e 11-workpiece conveying in-place detection sensor.
Detailed Description
The invention will be further illustrated by means of specific embodiments in the following description with reference to the accompanying drawings:
referring to fig. 1-4, in this embodiment, the axial clearance detecting device for a planar thrust ball bearing includes a base 1, a feeding device, a guiding and conveying mechanism, a clamping mechanism, a pushing mechanism, a lifting mechanism, a spring pressing head 2 and a displacement probe 3, wherein the feeding device, the guiding and conveying mechanism and the lifting mechanism are respectively connected to the base 1, the clamping mechanism and the pushing mechanism are connected to the guiding and conveying mechanism and driven by the guiding and conveying mechanism to move horizontally, the clamping mechanism is rotatably connected to the guiding and conveying mechanism, the spring pressing head 2 is connected to the pushing mechanism and located in a workpiece clamping area of the clamping mechanism, the displacement probe 3 is connected to the lifting mechanism, and the spring pressing head 2 and the displacement probe 3 are used for being matched up and down to push against a sphere of. In this embodiment, the indenter 2 is a pogo pin having an independent elastic force, the displacement probe 3 is in the form of an elastic pin having an elastic tip and a displacement sensor, and the elastic force of the indenter 2 is slightly greater than the elastic force of the displacement probe 3 to ensure that the ball can be pressed from the highest position to the lowest position. As can be seen from the figure, the base 1 serves as a base for supporting and mounting the whole, the feeding device serves as an independent integrated part of the equipment, the guiding mechanism, the clamping mechanism, the pressing mechanism and the spring pressing head 2 serve as another independent integrated part of the equipment, and the lifting mechanism and the displacement probe 3 serve as another independent integrated part of the equipment (the guiding mechanism, the clamping mechanism, the pressing mechanism and the spring pressing head 2 constitute a detection execution device, and the lifting mechanism and the displacement probe 3 constitute a data acquisition device). In addition, the base 1 is also provided with a blanking frame 4, and after the workpiece detection is finished, the guide mechanism drives the clamping mechanism to move to a position above the blanking frame 4, so that the workpiece falls into the clamping mechanism for centralized accommodating treatment.
In the present embodiment, the guide mechanism includes a mounting bracket c1, an electric linear slide c2, and a moving seat c3, the mounting bracket c1 is connected to the base 1, the electric linear slide c2 is connected to the mounting bracket c1, the moving seat c3 is connected to the electric linear slide c2, and the moving seat c3 is used as a connecting portion of the gripping mechanism and the pushing mechanism. As can be understood from the drawings, in the embodiment, the electric linear sliding table c2 is horizontally disposed, the moving seat c3 is an inverted "T" shaped structure having a vertical plate and a horizontal plate, one surface of the vertical plate is fixedly connected to the electric linear sliding table c2, the other surface of the vertical plate is connected to a pressing mechanism, and the lower surface of the horizontal plate is connected to a clamping mechanism.
In the present embodiment, the gripping mechanism includes an electric turntable b1 and a three-jaw cylinder b2, the electric turntable b1 is connected to the feeding mechanism, the three-jaw cylinder b2 is connected to the electric turntable b1 and is driven to rotate by the electric turntable b1, and a gripping jaw b3 adapted to the workpiece is provided on the three-jaw cylinder b 2. As can be understood from the drawings, in the present embodiment, the electric turntable b1 is fixedly connected to the lower surface of the transverse plate of the moving seat c3, and the electric turntable b1 is connected to a cylinder connecting plate for connecting and fixing the three-jaw cylinder b 2.
Regarding the pushing mechanism, in the present embodiment, it includes a pushing cylinder a1, a ram a2 and a connecting disc a3, the pushing cylinder a1 is connected to the guiding mechanism, the upper end of the ram a2 is connected to the piston rod of the pushing cylinder a1, the lower end extends to the workpiece clamping area of the gripping mechanism, the connecting disc a3 is connected to the lower end of the ram a2, and the spring ram 2 is connected to the connecting disc a 3. As can be seen from the figure, in this embodiment, the push-down cylinder a1 is connected and fixed to a vertical plate of the movable seat c3 through a supporting plate, the ejector pin a2 is connected to a piston rod of the push-down cylinder a1 through a connecting sleeve, where the ejector pin a2 sequentially penetrates through the electric turntable b1 and the three-jaw cylinder b2 from top to bottom to a space where the workpiece is clamped by the clamping jaw b3, when the workpiece is clamped, the lower end of the ejector pin a2 is located above the workpiece, the connecting plate a3 is connected to the lower end of the ejector pin a2, and the spring ram 2 is connected to the connecting plate a3, so that when the three-jaw cylinder b2 rotates with the electric turntable b1, the ejector pin a2 is ensured not to interfere with the three-jaw cylinder b2 or the electric turntable b 1. It should be noted that, in the present invention, the spring pressing head 2 can float to prevent the workpiece from dropping from the clamping jaw b3 or causing the workpiece to displace relative to the clamping jaw b3 due to too large impact when the pressing mechanism is pressed down, which affects the detection; when the invention is implemented, the spring pressure head 2 can adopt a pogopin extension spring probe which can be purchased from the market, and is a relatively economic implementation mode.
The ejector rod a2 may extend from the outer side of the electric turntable b1 and the three-jaw cylinder b2 instead of the through form, but the arrangement still needs to combine the three-jaw cylinder b2 and the spring press head 2, for example, the included angle between the adjacent clamping jaws b3 on the three-jaw cylinder b2 in the embodiment is 120 degrees, and the ejector rod a2 extending from the outer side will tend to pass between the two clamping jaws b3, so the spring press head 2 can match the displacement probe 3 to detect all the spheres of the workpiece within 120 degrees of rotation of the three-jaw cylinder b2, and the ejector rod a2 will not interfere with the clamping jaws. In this embodiment, 8 spheroids in the work piece that equipment detected, 2 circumference of spring pressure head have 4 correspondently to even interval arrangement, displacement probe 3 also circumference has 4 even interval arrangement, and when detecting the station, it is just right from top to bottom with spring pressure head 2 to the cooperation top touches spheroidal action from top to bottom is accomplished, specifically visible after-mentioned testing process, the first completion is to 4 spheroid detection back three-jaw cylinder b2 commentaries on classics 45 degrees wherein, just can make spring pressure head 2 just accomplish the detection of axial internal clearance to remaining 4 spheroids.
Regarding the lifting mechanism, in this embodiment, it includes slip table cylinder d1, connecting seat d2 and mount d3, and slip table cylinder d1 is connected on base 1, and connecting seat d2 is connected with slip table cylinder d1, and mount d3 is connected on connecting seat d2, and displacement probe 3 is connected on mount d 3. As can be understood from the drawings, the sliding table cylinder d1 is connected and fixed on the base 1 through a cylinder connecting bracket, and the connecting seat d2 is fixedly connected with the piston rod of the sliding table cylinder d1 for vertical movement. The fixing frame d3 comprises a supporting rod and a perforated plate connected to the supporting rod, the perforated plate is a cross-shaped plate, the four ends of the perforated plate are provided with vertical through holes, the ends of the perforated plate are in a forking form, the forking space is led to the outside through the vertical through holes, the arrangement is realized because the displacement probe 3 adopts a thimble vertical section form with a displacement sensor, and after the displacement probe 3 is placed into the vertical through hole of the perforated plate, the forking section can be transversely fastened through a screw to fix the displacement probe 3.
Regarding the feeding device, in this embodiment, it includes motor e1, feeding frame e2, conveying belt shaft e3, conveyor belt e4, material pushing cylinder e5, material pushing arm e6, material lifting cylinder e7 and workpiece tray table e8, conveying belt shaft e3 is connected to feeding frame e2, conveyor belt e4 is wound on conveying belt shaft e3, one of conveying belt shafts e3 is in transmission connection with motor e1, motor e1 is connected to feeding frame e2 or alternatively connected to base 1. As can be seen from the drawings, in the present embodiment, the pushing cylinder e5 is fixed on the base 1 (or optionally connected to the feeding rack e2) through a cylinder connecting bracket, and moves horizontally; the material lifting cylinder e7 is directly connected and fixed on the feeding frame e2 (or optionally connected on the base 1), and the material pushing arm e6 is connected with the piston rod of the material pushing cylinder e5 for vertical movement. A piston rod of the material lifting cylinder e5 is provided with a workpiece tray table e8, and the material pushing arm e6 and the workpiece tray table e8 are respectively positioned at two sides of the short axis direction of the conveyor belt e4, namely, the workpiece tray table e8 is intersected with the conveying direction of the conveyor belt e 4. The pushing arm e6 is positioned at the outer side of the conveyor belt e4, the workpiece tray table e8 is positioned at the inner side of the conveyor belt e4, and the pushing arm e6 is composed of a plurality of folding sections and is provided with a pushing end used for pushing the workpiece away from the conveyor belt e4 to the workpiece tray table e 8; in addition, a guide plate e9 and a fence e10 are laterally connected to the feeding frame e2, the guide plate e9 is correspondingly laterally connected with a conveyor belt e4 and serves as a passing road section for a pushing arm e6 to push a workpiece to a workpiece tray e8, the fence e10 is matched with the side portion of the feeding frame e2 to surround and block the workpiece tray e8 and the guide plate e9, the workpiece tray e8 can be driven by a material lifting cylinder to vertically lift in the fence e10 without obstruction, and the guide plate e9 and the fence e10 jointly assist the pushing arm e6 to guide the workpiece to prevent the workpiece from deviating and dropping out. And as an auxiliary, a workpiece conveying-in-place detection sensor e11 on the feeding frame e2 is used for detecting whether the workpiece is conveyed to the position to be pushed by the material pushing arm e6 by the conveyor belt e4, in the embodiment, the workpiece conveying-in-place detection sensor e11 is a diffuse reflection sensor and is arranged at the front end of the conveyor belt e4 and is fixedly connected to the feeding frame e2 through a connecting bracket, and the pushing top end of the material pushing arm e6, the guide plate e9 and the surrounding block e10 are also arranged at the front end of the matched conveyor belt e 4.
The basic action process of the detection device for detecting the axial clearance of the ball in the workpiece is as follows: in an initial state, the pressing cylinder a1 is retracted, the lifting cylinder e7 is retracted, the three-jaw cylinder b2 is extended, the pushing cylinder e5 is extended, the lifting cylinder e7 is retracted, and the three-jaw cylinder b2 is located right above the lifting cylinder e 7; when the work is started, a workpiece (a ball-assembled retainer) is placed on the conveyor belt e4, after the workpiece is conveyed to the in-place detection sensor e11 to measure signals, the material pushing cylinder e5 retracts to drive the material pushing arm e6 to push the workpiece to the workpiece support table e8, the material pushing cylinder e5 extends out again, the material lifting cylinder e7 extends to a preset position, the three-jaw cylinder b2 retracts to clamp the workpiece through the clamping jaw b3, and the material lifting cylinder retracts again; then, the electric linear sliding table c2 drives the detection executing device to move forward, so that the workpiece is brought to a preset detection station, namely above the lifting mechanism, or above the displacement probe 3, and then the sliding table cylinder d1 extends out, the electric rotary table rotates, so that the displacement probe 3 is pressed against the lowest point of the surface of the sphere to be detected (at this time, the sphere is pressed to the highest position by the displacement probe 3), and the reading of the displacement probe 3 at this time is recorded; the push-down cylinder a1 is then extended to make the spring pressure head 2 touch the workpiece from above, the spring pressure head 2 is opposite to the displacement probe 3, and presses down from the highest point of the workpiece sphere surface to press the sphere to the lowest position, and the reading of the displacement probe 3 is recorded at the moment. The difference (absolute value) between the two recorded measurements is the value of the play of the corresponding sphere.
The specific implementation principle of the method for finding the lowest point on the surface of the sphere by the displacement probe 3 is as follows: after the lifting cylinder lifts the displacement probe 3 to the position (which may or may not contact with the sphere at this time), the electric turntable b1 rotates to make the displacement probe 3 slide along the surface of the sphere, the displacement probe 3 will change the reading from contacting the sphere, the position where the reading has the peak value is the position of the lowest point on the surface of the sphere, after the peak value is generated, the electric turntable b1 drives the workpiece to rotate back to the peak value position, and then the position that the displacement probe 3 touches against is the lowest point on the surface of the sphere at this time.
It should be noted that, in this embodiment, the workpiece to be detected is shown in fig. 5, which is a ball-assembled holder with 8 balls, and the spring pressure head 2 and the displacement probe 3 are both provided with 4 balls uniformly distributed in the circumferential direction in this embodiment, so that the advantage of this arrangement is that the number of the spring pressure heads and the displacement probes is not excessively dense and the arrangement is convenient, and during the detection, after the electric turntable b1 rotates twice, the displacement probe 3 can be used to complete the top touch detection of all the workpiece balls, and the 8 data corresponding to the requirement are detected by matching with the spring pressure head 2. The specific process is that the electric turntable rotates for the first time, as described in the previous paragraph, the electric turntable drives the workpiece to rotate, in the process of rotating the workpiece, the displacement probe 3 which is abutted against the workpiece finds the lowest point of the surface of the sphere, because the 4 displacement probes are all circumferentially and uniformly arranged at intervals and correspond to 4 spheres in the workpiece, after the first-time rotation of the electric turntable is finished, the 4 displacement probes 3 simultaneously measure the data that 4 spheres are jacked to the highest position, the spring pressure head 2 presses the spheres with the pressing cylinder a1 to measure the data that the 4 spheres are pressed to the lowest position, and then the pressing cylinder a1 and the sliding table cylinder d1 are both retracted; then, the electric turntable b1 rotates for the second time, because 8 spheres on the workpiece are provided, and the displacement probes 3 uniformly arranged in the circumferential direction have found the highest points of 4 spheres, so as long as the electric turntable b1 rotates by 45 degrees, the pressing cylinder a1 and the sliding table cylinder d1 extend out successively, the 4 displacement probes 3 respectively obtain the data that the rest 4 spheres are pressed to the highest positions, the spring pressure head 2 presses downwards subsequently, the 4 displacement probes 3 measure the data that the rest 4 spheres are pressed to the lowest positions, and after difference operation, the axial play of the 4 spheres is obtained.
After all data are measured, the electric linear sliding table c2 drives the three-jaw cylinder b2 to move to a blanking station, a clamping jaw of the three-jaw cylinder extends out, a workpiece falls into a blanking frame, and then the electric linear sliding table c2 resets to wait for detecting the next workpiece. In this embodiment, there are two blanking slots in the blanking frame 4, receive certified products and non-certified products respectively, and electric linear sliding table c2 transports certified products and non-certified products to the top of corresponding blanking slot respectively according to the testing result.
The detection equipment provided by the invention needs to be provided with a set of control system during working, and in the embodiment, the plane thrust ball bearing axial clearance detection equipment is controlled by a PLC (programmable logic controller). Each cylinder is provided with a magnetic switch for detecting the state of the cylinder. After the piston rod of the air cylinder acts in place, the magnetic switch sends a signal to the PLC control system, and the trigger device executes the next action. It should be noted that in the present embodiment, the driving element is mostly in the form of a cylinder, but not limited thereto, and when implementing the present invention, a cylinder, an electric cylinder, and other similar common replaceable actuating elements may also be used.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles.
Claims (10)
1. Plane thrust ball bearing axial internal clearance check out test set, its characterized in that: comprises a base (1), a feeding device, a detection execution device and a data acquisition device; the feeding device, the detection executing device and the data acquisition device are respectively connected to the base (1); the detection executing device comprises a guide conveying mechanism, a clamping mechanism, a pressing mechanism and a spring pressing head (2), wherein the clamping mechanism and the pressing mechanism are connected to the guide conveying mechanism and driven by the guide conveying mechanism to horizontally move along a guide conveying route, the clamping mechanism is rotatably connected to the guide conveying mechanism, and the spring pressing head (2) is located in a workpiece clamping area of the clamping mechanism and connected with the pressing mechanism; the data acquisition device consists of a lifting mechanism and a displacement probe (3), and the displacement probe (3) is connected to the lifting mechanism; the tail end of the feeding device is positioned below the guiding route of the guiding mechanism, so that the clamping mechanism can clamp the workpiece to be detected from the feeding device; the lifting mechanism is positioned below the guide route of the guide mechanism, so that the displacement probe (3) can detect the axial play value of a ball in a workpiece.
2. The axial play detecting apparatus of a plain thrust ball bearing according to claim 1, characterized in that: the mechanism pushes down includes push cylinder (a1), ejector pin (a2) and connection pad (a3), push cylinder (a1) is connected down lead and send on the mechanism, the upper end of ejector pin (a2) with the piston rod of push cylinder (a1) is connected down, the lower extreme of ejector pin (a2) extends to press from both sides the work piece centre gripping region who gets the mechanism, connection pad (a3) is connected the lower extreme of ejector pin (a2), spring pressure head (2) are connected on connection pad (a 3).
3. The axial play detecting apparatus of a plain thrust ball bearing according to claim 1, characterized in that: the clamping mechanism comprises an electric rotary table (b1) and a three-jaw cylinder (b2), the electric rotary table (b1) is connected to the guiding mechanism, the three-jaw cylinder (b2) is connected to the electric rotary table (b1) and can be driven by the electric rotary table to rotate, and a clamping jaw (b3) matched with a workpiece is arranged on the three-jaw cylinder (b 2).
4. The axial play detecting apparatus of a plain thrust ball bearing according to claim 1, 2 or 3, characterized in that: the guide mechanism comprises a mounting bracket (c1), an electric linear sliding table (c2) and a moving seat (c3), wherein the mounting bracket (c1) is connected to the base (1), the electric linear sliding table (c2) is connected to the mounting bracket (c1), the moving seat (c3) is connected to the sliding block of the electric linear sliding table (c2), and the clamping mechanism is connected with the pressing mechanism and the moving seat (c3) in a connecting mode.
5. The axial play detecting apparatus of a plain thrust ball bearing according to claim 1, characterized in that: the lifting mechanism comprises a sliding table cylinder (d1), a connecting seat (d2) and a fixing frame (d3), the sliding table cylinder (d1) is connected to the base (1), the connecting seat (d2) is connected with a sliding table of the sliding table cylinder (d1), and the fixing frame (d3) is connected to the connecting seat (d 2); the displacement probe (3) is connected to the fixed frame (d 3).
6. The axial play detecting apparatus of a plain thrust ball bearing according to claim 1, characterized in that: the feeding device comprises a motor (e1), a feeding rack (e2), a conveying belt shaft (e3) and a conveying belt (e4), wherein the conveying belt shaft (e3) is connected to the feeding rack (e2), the conveying belt (e4) is wound on the conveying belt shaft (e3), one conveying belt shaft (e3) is in transmission connection with the motor (e1), and the motor (e1) is connected to the base (1) or the feeding rack (e 2).
7. The axial play detecting apparatus of a plain thrust ball bearing according to claim 6, characterized in that: the feeding device further comprises a material pushing cylinder (e5), a material pushing arm (e6), a material lifting cylinder (e7) and a workpiece tray table (e8), the material pushing cylinder (e5) and the material lifting cylinder (e7) are connected to the base (1) or the material conveying frame (e2) respectively, the material pushing arm (e6) is connected with the material pushing cylinder (e5), the workpiece tray table (e8) is connected with the material lifting cylinder (e7), and a pushing end of the material pushing arm (e6) is opposite to the workpiece tray table (e8) and located on two sides of the conveying belt (e4) respectively.
8. The axial play detecting apparatus of a plain thrust ball bearing according to claim 7, characterized in that: the feeding rack (e2) is connected with a guide plate (e9) and a fence (e10) at the conveying tail end position of the conveyor belt; the guide plate (e9) is used as a traveling path of the pushing arm (e6) to push the workpiece to the workpiece tray table (e8), and the enclosing block (e10) is matched with the side part of the feeding frame (e2) to enclose and block the workpiece tray table (e 8).
9. The axial play detecting apparatus of a plain thrust ball bearing according to claim 6 or 7, characterized in that: and a workpiece conveying position detection sensor (e11) is arranged at the conveying tail end position of the conveyor belt on the feeding rack (e 2).
10. The axial clearance detection method of the plane thrust ball bearing is characterized by comprising the following steps: the method adopts the automatic axial clearance detection device as claimed in any one of claims 1 to 9 to detect the axial clearance of the plane thrust ball bearing, and comprises the following steps,
firstly, a clamping mechanism clamps a workpiece from a feeding device and is driven to a detection station by a guide mechanism;
secondly, the lifting mechanism lifts the displacement probe to a detection position;
the clamping mechanism rotates to drive the workpiece to rotate, so that the displacement probe pushes the close ball on the workpiece to the highest position and is in contact with the lowest point of the surface of the ball, and the reading of the displacement probe is recorded;
driving a spring pressure head to press downwards by a pressing mechanism to press the ball body supported by the displacement probe to the lowest position, and recording the reading of the displacement probe at the moment again;
fifthly, making a difference between the reading of the displacement probe recorded in the step IV and the reading of the displacement probe recorded in the step III to obtain an axial play value of the corresponding sphere;
sixthly, the lifting mechanism returns to withdraw the displacement probe, and the pressing mechanism returns to withdraw the spring pressing head;
seventhly, continuously rotating the rotary table by a preset angle, repeating the steps from the sixth step to the sixth step until the axial play values corresponding to the spheres carried by all the workpieces are measured, and executing the step (I);
driving the three-jaw cylinder to a blanking station by the linear sliding table, and loosening and falling the workpiece by the three-jaw cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210226.6A CN112525126A (en) | 2020-11-03 | 2020-11-03 | Axial clearance detection device and method for plane thrust ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210226.6A CN112525126A (en) | 2020-11-03 | 2020-11-03 | Axial clearance detection device and method for plane thrust ball bearing |
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| CN112525126A true CN112525126A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011210226.6A Withdrawn CN112525126A (en) | 2020-11-03 | 2020-11-03 | Axial clearance detection device and method for plane thrust ball bearing |
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| CN (1) | CN112525126A (en) |
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| US6354128B1 (en) * | 1997-12-24 | 2002-03-12 | Danieli & C. Officine Meccaniche Spa | Method to eliminate the play between chocks and relative support blocks in four-high rolling stands and relative device |
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| CN110987483A (en) * | 2019-10-31 | 2020-04-10 | 中国矿业大学 | Automatic detection system for internal structure defects of inflation-free hollow tire |
| CN211042044U (en) * | 2019-11-18 | 2020-07-17 | 昆山康斯特精密机械有限公司 | Novel single-row deep groove ball bearing axial clearance detection mechanism |
| CN213612711U (en) * | 2020-11-03 | 2021-07-06 | 杭州智谷精工有限公司 | Axial clearance detection executing device of plane thrust ball bearing |
| CN213967785U (en) * | 2020-11-03 | 2021-08-17 | 杭州智谷精工有限公司 | Feeding device of axial clearance detection equipment for plane thrust ball bearing |
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2020
- 2020-11-03 CN CN202011210226.6A patent/CN112525126A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354128B1 (en) * | 1997-12-24 | 2002-03-12 | Danieli & C. Officine Meccaniche Spa | Method to eliminate the play between chocks and relative support blocks in four-high rolling stands and relative device |
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