A cross shaft inner and outer diameter detection device

Abstract

The present invention provides a cross shaft inner and outer diameter detection device, which includes a turntable feeding device, a first detection driving device, a second detection driving device, a blanking and sorting device, an outer diameter detection device, an inner diameter detection device, a positioning and pressing mechanism, a waste output mechanism and a finished product output mechanism. The turntable feeding device is provided with a rotatable multi-station turntable and a plurality of reversing and positioning seats. At the center of the multi-station turntable, two positioning and pressing mechanisms respectively arranged opposite to the outer diameter detection device and the inner diameter detection device are installed. The outer diameter detection device and the inner diameter detection device are respectively installed on the first detection driving device and the second detection driving device. The blanking and sorting device is provided with a rotatable sorting arm, and a mechanical claw is installed on the sorting arm. The waste output mechanism and the finished product output mechanism are respectively arranged on both sides of the blanking and sorting device. This device can realize the detection of the inner diameter and outer diameter of the cross shaft, and has high detection efficiency, which can reduce the labor intensity of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of cross shaft detection equipment, in particular to an inner and outer diameter detection device for a cross shaft.

Background Art

[0002] A universal joint uses spherical devices and the like to achieve power output of shafts in different directions and is a very important component in an automobile. Currently, the widely used universal joint is a cross shaft type universal joint, which has a simple structure and high transmission efficiency.

[0003] After the cross shaft type universal joint is produced, it needs to be detected. Currently, the detection method used is manual detection, that is, workers use tools such as vernier calipers to detect the cross shaft type universal joint. This detection method has a large error and increases the labor intensity of workers. Therefore, an inner and outer diameter detection device for a cross shaft is proposed.

Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and propose an inner and outer diameter detection device for a cross shaft, which can realize the detection of the inner diameter and outer diameter of the cross shaft, has high detection efficiency, and can reduce the labor intensity of workers.

[0005] To achieve the above purpose, the present invention proposes an inner and outer diameter detection device for a cross shaft, including a turntable loading device, a first detection driving device, a second detection driving device, a blanking and sorting device, an outer diameter detection device, an inner diameter detection device, a positioning and pressing mechanism, a waste output mechanism, and a finished product output mechanism. The turntable loading device has a rotatable multi-station turntable, and each station of the multi-station turntable is respectively provided with a commutation positioning seat for fixing the cross shaft. Along the rotation and conveying direction outside the turntable loading device, a first detection driving device, a second detection driving device, and a blanking and sorting device are sequentially arranged. At the center of the multi-station turntable, there is a fixed center seat, and two positioning and pressing mechanisms respectively opposite to the outer diameter detection device and the inner diameter detection device are installed on the fixed center seat for pressing and fixing the cross shaft on the commutation positioning seat. The outer diameter detection device and the inner diameter detection device are respectively installed on the first detection driving device and the second detection driving device. The blanking and sorting device is provided with a rotatable sorting arm, and a mechanical claw is installed on the sorting arm. A waste output mechanism and a finished product output mechanism are respectively arranged on both sides of the blanking and sorting device.

[0006] Preferably, the first detection driving device is provided with a first driving push rod, a guiding slide rod, a driving plate and a first telescopic support. The telescopic rod of the first driving push rod is connected to one side of the driving plate. It is invented that the driving plate is movably installed on the guiding slide rod and moves along the guiding slide rod under the action of the first driving push rod. The other side of the driving plate is connected to the outer diameter detection device through a plurality of first telescopic supports. The structures of the first detection driving device and the second detection driving device are the same.

[0007] Preferably, the outer diameter detection device includes a first mounting seat, an outer diameter upper limit detection plate, an outer diameter lower limit detection plate, a first pressure sensor and a second pressure sensor. The first mounting seat has a first cavity inside. The outer diameter upper limit detection plate and the outer diameter lower limit detection plate are sequentially installed inside the first cavity from the opening inwards. Both the outer diameter upper limit detection plate and the outer diameter lower limit detection plate are circular rings. The outer diameter of the central through hole of the outer diameter upper limit detection plate is the upper limit of the outer diameter of the shaft head of the cross shaft, and the inner diameter of the central through hole of the outer diameter lower limit detection plate is the lower limit of the shaft head outer diameter. A first annular mounting groove is formed in the first cavity. The outer periphery of the outer diameter upper limit detection plate extends with a first outer edge extending into the first annular mounting groove. The first outer edge is connected to the inner wall of the first annular mounting groove through a plurality of telescopic connecting rods. A first pressure sensor is arranged on one side of the first outer edge. The outer diameter lower limit detection plate is installed on a support in the first cavity through a plurality of telescopic connecting rods. The outer periphery of the outer diameter lower limit detection plate extends with a second outer edge extending into the first annular mounting groove. A second pressure sensor is arranged on one side of the second outer edge.

[0008] Preferably, the inner diameter detection device includes a second mounting seat, an inner diameter lower limit detection rod, an inner diameter upper limit detection sleeve rod, a third pressure sensor and a fourth pressure sensor. The second mounting seat has a second cavity inside. The inner diameter lower limit detection rod and the inner diameter upper limit detection sleeve rod are installed inside the second cavity. The outer diameter of the inner diameter lower limit detection rod is the lower limit of the inner diameter of the shaft head of the cross shaft, and the outer diameter of the inner diameter upper limit detection sleeve rod is the upper limit of the shaft head inner diameter. The inner diameter upper limit detection sleeve rod is sleeved outside the inner diameter lower limit detection rod. One end of the inner diameter lower limit detection rod extends out of the inner diameter upper limit detection sleeve rod, and the other end is provided with a first fixing plate. The rear end of the inner diameter upper limit detection sleeve rod is provided with a second mounting plate. The first fixing plate and the second mounting plate are respectively installed in the second cavity through a plurality of telescopic connecting rods, and a third pressure sensor and a fourth pressure sensor are respectively arranged on their rear sides.

[0009] Preferably, the blanking and sorting device further includes a driving rotating seat and a lifting material-grabbing cylinder. One end of the sorting rotating arm is fixedly connected to the top of the driving rotating seat, and the other end is installed with a lifting material-grabbing cylinder. The telescopic rod of the lifting material-grabbing cylinder is connected to the mechanical claw assembly.

[0010] Preferably, a pressing cylinder and a pressing plate connected to the telescopic rod of the pressing cylinder are provided on the positioning and pressing mechanism, and the pressing plate is located directly above the commutation positioning seat.

[0011] Preferably, the commutation positioning seat includes a rotary commutation turntable and a positioning seat arranged above the rotary commutation turntable. The positioning seat has a cross-axis positioning groove inside, and there are four shaft head clamping grooves on the outer periphery of the cross-axis positioning groove. The cross-section of the shaft head clamping groove is U-shaped, and a first installation groove is provided on one side. A retractable positioning block is installed in the first installation groove.

[0012] Advantages of the present invention: Through the cooperation of the turntable feeding device, the first detection and driving device, the second detection and driving device, the blanking and sorting device, the outer diameter detection device, the inner diameter detection device, the positioning and pressing mechanism, the waste output mechanism and the finished product output mechanism, etc., the turntable feeding device can realize multi-station automatic feeding. The outer diameter and inner diameter of the cross shaft can be detected by the outer diameter detection device and the inner diameter detection device. The commutation positioning seat can rotate 90 degrees after one shaft head is detected, which is convenient for the detection of another shaft head, so as to realize the detection of the four shaft heads of the cross shaft in one clamping, with high detection efficiency and reduced labor intensity of workers. And, when detecting, the cross shaft is pressed by the positioning and pressing mechanism to ensure accurate positioning. The detected cross shafts are sorted by the blanking and sorting device. The qualified ones are placed on the finished product output mechanism for output, and the unqualified ones are placed on the waste output mechanism for output to realize sorting.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the drawings.

Description of the Drawings

[0014] Figure 1 is a top view schematic diagram of an inner and outer diameter detection device for a cross shaft of the present invention;

[0015] Figure 2 is an internal structure schematic diagram of the outer diameter detection device of an inner and outer diameter detection device for a cross shaft of the present invention;

[0016] Figure 3 is an internal structure schematic diagram of the inner diameter detection device of an inner and outer diameter detection device for a cross shaft of the present invention;

[0017] Figure 4 is a top view schematic diagram of the commutation positioning seat of an inner and outer diameter detection device for a cross shaft of the present invention;

[0018] Figure 5 is Figure 4 a CC-direction sectional view of

Detailed Embodiments

[0019] Refer to Figures 1 to 5, a cross shaft inner and outer diameter detection device of the present invention includes a turntable feeding device 1, a first detection driving device 2, a second detection driving device 3, a blanking and sorting device 4, an outer diameter detection device 5, an inner diameter detection device 6, a positioning and pressing mechanism 7, a waste output mechanism 8 and a finished product output mechanism 9. The turntable feeding device 1 has a rotatable multi-station turntable, and each station of the multi-station turntable is respectively provided with a commutation positioning seat 10 for fixing the cross shaft. The outside of the turntable feeding device 1 is sequentially provided with a first detection driving device 2, a second detection driving device 3 and a blanking and sorting device 4 along the rotation and conveying direction. The center of the multi-station turntable has a fixed center seat 100, and two positioning and pressing mechanisms 7 respectively opposite to the outer diameter detection device 5 and the inner diameter detection device 6 are installed on the fixed center seat 100 for pressing and fixing the cross shaft on the commutation positioning seat 10. The outer diameter detection device 5 and the inner diameter detection device 6 are respectively installed on the first detection driving device 2 and the second detection driving device 3. The blanking and sorting device 4 is provided with a rotatable sorting arm 42, and a mechanical claw 44 is installed on the sorting arm 42. The waste output mechanism 8 and the finished product output mechanism 9 are respectively arranged on both sides of the blanking and sorting device 4.

[0020] Further, referring to Figure 1 , the first detection driving device 2 is provided with a first driving push rod 21, a guiding slide rod 22, a driving plate 23 and a first telescopic bracket 24. The telescopic rod of the first driving push rod 21 is connected to one side of the driving plate 23. The driving plate 23 is movably installed on the guiding slide rod 22 and moves along the guiding slide rod 22 under the action of the first driving push rod 21. The other side of the driving plate 23 is connected to the outer diameter detection device 5 through a plurality of first telescopic brackets 24. The first driving push rod 21 is an electric push rod, and the structures of the first detection driving device 2 and the second detection driving device 3 are the same.

[0021] Further, referring to Figure 2, the outer diameter detection device 5 includes a first mounting base 51, an outer diameter upper limit detection plate 52, an outer diameter lower limit detection plate 53, a first pressure sensor 54 and a second pressure sensor 55. The first mounting base 51 has a first cavity 510 inside. Inside the first cavity 510, an outer diameter upper limit detection plate 52 and an outer diameter lower limit detection plate 53 are sequentially installed from the opening inwards. Both the outer diameter upper limit detection plate 52 and the outer diameter lower limit detection plate 53 are annular. The outer diameter of the central through hole of the outer diameter upper limit detection plate 52 is the upper limit of the outer diameter of the shaft head of the cross shaft, and the inner diameter of the central through hole of the outer diameter lower limit detection plate 53 is the lower limit of the outer diameter of the shaft head. A first annular mounting groove 511 is formed in the first cavity 510. A first outer edge 521 extending from the outer periphery of the outer diameter upper limit detection plate 52 extends into the first annular mounting groove 511. The first outer edge 521 is connected to the inner wall of the first annular mounting groove 511 through a plurality of telescopic connecting rods. A first pressure sensor 54 is provided on one side of the first outer edge 521. The outer diameter lower limit detection plate 53 is installed on a support 512 inside the first cavity 510 through a plurality of telescopic connecting rods. A second outer edge 531 extending from the outer periphery of the outer diameter lower limit detection plate 53 extends into the first annular mounting groove 511. A second pressure sensor 55 is provided on one side of the second outer edge 531.

[0022] Further, referring to Figure 3 , the inner diameter detection device 6 includes a second mounting base 61, an inner diameter lower limit detection rod 62, an inner diameter upper limit detection sleeve rod 63, a third pressure sensor 64 and a fourth pressure sensor 65. The second mounting base 61 has a second cavity 610 inside. Inside the second cavity 610, an inner diameter lower limit detection rod 62 and an inner diameter upper limit detection sleeve rod 63 are installed. The outer diameter of the inner diameter lower limit detection rod 62 is the lower limit of the inner diameter of the shaft head of the cross shaft, and the outer diameter of the inner diameter upper limit detection sleeve rod 63 is the upper limit of the inner diameter of the shaft head. The inner diameter upper limit detection sleeve rod 63 is sleeved outside the inner diameter lower limit detection rod 62. One end of the inner diameter lower limit detection rod 62 extends out of the inner diameter upper limit detection sleeve rod 63, and the other end is provided with a first fixing plate 621. The rear end of the inner diameter upper limit detection sleeve rod 63 is provided with a second mounting plate 631. The first fixing plate 621 and the second mounting plate 631 are respectively installed in the second cavity 610 through a plurality of telescopic connecting rods, and a third pressure sensor 64 and a fourth pressure sensor 65 are respectively provided on their rear sides.

[0023] Among them, the first pressure sensor 54, the second pressure sensor 55, the third pressure sensor 64 and the fourth pressure sensor 65 are all connected to the central control system. And the central control system is connected to the blanking sorting device 4. According to the detection results of the outer diameter detection device 5 and the inner diameter detection device 6, the blanking position of the blanking sorting device 4 is determined.

[0024] Further, referring to Figure 1, the blanking and sorting device 4 further includes a driving turntable 41 and a lifting material-grabbing cylinder 43. One end of the sorting rotating arm 42 is fixedly connected to the top of the driving turntable 41, and the other end is equipped with a lifting material-grabbing cylinder 43. The telescopic rod of the lifting material-grabbing cylinder 43 is connected to the mechanical claw assembly 44, and the cross shaft is grabbed by the mechanical claw.

[0025] Further, referring to Figure 1 , the positioning and pressing mechanism 7 is provided with a pressing cylinder 71 and a pressing plate 72 connected to the telescopic rod of the pressing cylinder 71. The pressing plate 72 is located directly above the commutation positioning seat 10.

[0026] Further, referring to Figure 4 , the commutation positioning seat 10 includes a rotating and commuting turntable 11 and a positioning seat 12 arranged above the rotating and commuting turntable 11. The positioning seat 12 has a cross shaft positioning groove 13. Four shaft head clamping grooves 131 are provided on the outer periphery of the cross shaft positioning groove 13. When the cross shaft is placed in the cross shaft positioning groove 13, the top of the shaft head is in a state of protruding from the end of the shaft head clamping groove 131. In addition, referring to Figure 5 , the cross section of the shaft head clamping groove 131 is U-shaped, and a first installation groove 130 is provided on one side. A retractable positioning block 14 is installed in the first installation groove 130.

[0027] Working process of the present invention:

[0028] In the process of using a cross shaft inner and outer diameter detection device of the present invention, first place the cross shaft to be detected on the commutation positioning seat 10, and the turntable feeding device 1 performs multi-station automatic feeding. The commutation positioning seat 10 carrying the cross shaft can sequentially pass through the outer diameter detection device 5, the inner diameter detection device 6, and the blanking and sorting device 4. The outer diameter and inner diameter of the cross shaft can be detected by the outer diameter detection device 5 and the inner diameter detection device 6. During detection, the positioning and pressing mechanism 7 first acts to press the workpiece, and then the outer diameter detection device 5 and the inner diameter detection device 6 perform the detection operation. Moreover, after detecting one shaft head, the positioning and pressing mechanism 7 first resets, then the commutation positioning seat rotates 90 degrees, the positioning and pressing mechanism 7 presses the workpiece again, and starts to detect another shaft head until all four shaft heads of the cross shaft are detected. After the detection is completed, only the cross shafts with qualified outer diameter and inner diameter detections for all four shaft heads are judged as qualified workpieces. Finally, the central control system controls the blanking and sorting device 4 to perform sorting according to the detection results. The qualified ones are placed on the finished product output mechanism 9 for output, and the unqualified ones are placed on the waste output mechanism 8 for output to achieve sorting.

[0029] Principle of outer diameter detection:

[0030] Under the driving action of the first detection driving device 2, the outer diameter detection device 5 moves towards the commutation positioning seat 10, so that the shaft head of the cross shaft is inserted into the outer diameter detection device 5. When the outer diameter of the shaft head is greater than the central through hole of the upper limit detection plate 52, after the upper limit detection plate 52 of the outer diameter contacts the shaft head, it moves backward under its action and triggers the first pressure sensor 54, and sends a signal to the central control system. At this time, the upper limit of the outer diameter of the shaft head is unqualified; otherwise, the first pressure sensor 54 will not be triggered, and the upper limit of the outer diameter of the shaft head is qualified. Similarly, when the outer diameter of the shaft head is greater than the central through hole of the lower limit detection plate 53 of the outer diameter, after the lower limit detection plate 53 of the outer diameter contacts the shaft head, it moves backward under its action and triggers the second pressure sensor 55, and sends a signal to the central control system. At this time, the lower limit of the outer diameter of the shaft head is qualified; otherwise, the second pressure sensor 55 will not be triggered, and the lower limit of the outer diameter of the shaft head is unqualified. When both the upper limit and the lower limit of the outer diameter of the shaft head are qualified, it is judged that the outer diameter of the shaft head is qualified; otherwise, it is judged that the outer diameter of the shaft head is unqualified.

[0031] Principle of inner diameter detection:

[0032] Under the driving action of the second detection driving device 3, the inner diameter detection device 6 moves towards the commutation positioning seat 10 and inserts into the inner hole of the shaft head of the cross shaft. When the inner diameter of the shaft head is smaller than the outer diameter of the inner diameter lower limit detection rod 62, after the inner diameter lower limit detection rod 62 contacts the shaft head, it moves backward under its action and triggers the third pressure sensor 64, and sends a signal to the central control system. At this time, the lower limit of the inner diameter of the shaft head is unqualified; otherwise, the third pressure sensor 64 will not be triggered, and the lower limit of the inner diameter of the shaft head is qualified. Similarly, when the inner diameter of the shaft head is smaller than the outer diameter of the inner diameter upper limit detection sleeve rod 63, after the inner diameter upper limit detection sleeve rod 63 contacts the shaft head, it moves backward under its action and triggers the fourth pressure sensor 65, and sends a signal to the central control system. At this time, the upper limit of the inner diameter of the shaft head is qualified; otherwise, the fourth pressure sensor 65 will not be triggered, and the upper limit of the inner diameter of the shaft head is unqualified. When both the upper limit and the lower limit of the inner diameter of the shaft head are qualified, it is judged that the inner diameter of the shaft head is qualified; otherwise, it is judged that the inner diameter of the shaft head is unqualified.

[0033] The above embodiments are illustrative of the present invention, not limiting the present invention. Any solution obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. A cross shaft inner and outer diameter detection device, characterized in that: It includes a turntable loading device (1), a first detection and driving device (2), a second detection and driving device (3), a blanking and sorting device (4), an outer diameter detection device (5), an inner diameter detection device (6), a positioning and pressing mechanism (7), a waste output mechanism (8) and a finished product output mechanism (9). The turntable loading device (1) has a rotatable multi-station turntable. Each station of the multi-station turntable is respectively provided with a commutation positioning seat (10) for fixing the cross shaft. The first detection and driving device (2), the second detection and driving device (3) and the blanking and sorting device (4) are sequentially arranged along the rotation and conveying direction outside the turntable loading device (1). A fixed center seat (100) is provided at the center of the multi-station turntable. Two positioning and pressing mechanisms (7) respectively opposite to the outer diameter detection device (5) and the inner diameter detection device (6) are installed on the fixed center seat (100) for pressing and fixing the cross shaft on the commutation positioning seat (10). The outer diameter detection device (5) and the inner diameter detection device (6) are respectively installed on the first detection and driving device (2) and the second detection and driving device (3). A rotatable sorting arm (42) is provided on the blanking and sorting device (4). A mechanical claw (44) is installed on the sorting arm (42). The waste output mechanism (8) and the finished product output mechanism (9) are respectively arranged on both sides of the blanking and sorting device (4).

2. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The first detection and driving device (2) is provided with a first driving push rod (21), a guiding slide rod (22), a driving plate (23) and a first telescopic bracket (24). The telescopic rod of the first driving push rod (21) is connected to one side of the driving plate (23). The driving plate (23) is movably installed on the guiding slide rod (22) and moves along the guiding slide rod (22) under the action of the first driving push rod (21). The other side of the driving plate (23) is connected to the outer diameter detection device (5) through a plurality of first telescopic brackets (24). The structures of the first detection and driving device (2) and the second detection and driving device (3) are the same.

3. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The outer diameter detection device (5) includes a first mounting seat (51), an outer diameter upper limit detection plate (52), an outer diameter lower limit detection plate (53), a first pressure sensor (54), and a second pressure sensor (55). The first mounting seat (51) has a first cavity (510) inside. Inside the first cavity (510), an outer diameter upper limit detection plate (52) and an outer diameter lower limit detection plate (53) are sequentially installed from the opening inwards. Both the outer diameter upper limit detection plate (52) and the outer diameter lower limit detection plate (53) are annular. The outer diameter of the central through hole of the outer diameter upper limit detection plate (52) is the upper limit of the outer diameter of the shaft head of the cross shaft, and the inner diameter of the central through hole of the outer diameter lower limit detection plate (53) is the lower limit of the shaft head outer diameter. A first annular mounting groove (511) is formed in the first cavity (510). A first outer edge (521) extending from the outer periphery of the outer diameter upper limit detection plate (52) extends into the first annular mounting groove (511). The first outer edge (521) is connected to the inner wall of the first annular mounting groove (511) through a plurality of telescopic connecting rods. A first pressure sensor (54) is provided on one side of the first outer edge (521). The outer diameter lower limit detection plate (53) is installed on a support (512) inside the first cavity (510) through a plurality of telescopic connecting rods. A second outer edge (531) extending from the outer periphery of the outer diameter lower limit detection plate (53) extends into the first annular mounting groove (511). A second pressure sensor (55) is provided on one side of the second outer edge (531).

4. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The inner diameter detection device (6) includes a second mounting seat (61), an inner diameter lower limit detection rod (62), an inner diameter upper limit detection sleeve rod (63), a third pressure sensor (64), and a fourth pressure sensor (65). The second mounting seat (61) has a second cavity (610) inside. An inner diameter lower limit detection rod (62) and an inner diameter upper limit detection sleeve rod (63) are installed inside the second cavity (610). The outer diameter of the inner diameter lower limit detection rod (62) is the lower limit of the inner diameter of the shaft head of the cross shaft, and the outer diameter of the inner diameter upper limit detection sleeve rod (63) is the upper limit of the shaft head inner diameter. The inner diameter upper limit detection sleeve rod (63) is sleeved outside the inner diameter lower limit detection rod (62). One end of the inner diameter lower limit detection rod (62) extends out of the inner diameter upper limit detection sleeve rod (63), and a first fixing plate (621) is provided at the other end. A second mounting plate (631) is provided at the rear end of the inner diameter upper limit detection sleeve rod (63). The first fixing plate (621) and the second mounting plate (631) are respectively installed inside the second cavity (610) through a plurality of telescopic connecting rods, and a third pressure sensor (64) and a fourth pressure sensor (65) are respectively provided on their rear sides.

5. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The blanking and sorting device (4) further includes a driving turntable (41) and a lifting material grabbing cylinder (43). One end of the sorting rotating arm (42) is fixedly connected to the top of the driving turntable (41), and a lifting material grabbing cylinder (43) is installed at the other end. The telescopic rod of the lifting material grabbing cylinder (43) is connected to the mechanical claw assembly (44).

6. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The positioning and pressing mechanism (7) is provided with a pressing cylinder (71) and a pressing plate (72) connected to the telescopic rod of the pressing cylinder (71), and the pressing plate (72) is located directly above the commutation positioning seat (10).

7. The cross shaft inner and outer diameter detection device according to claim 1, characterized in that: The commutation positioning seat (10) includes a rotary commutation turntable (11) and a positioning seat (12) arranged above the rotary commutation turntable (11). The positioning seat (12) has a cross-axis positioning groove (13), and four shaft head clamping grooves (131) are arranged on the outer periphery of the cross-axis positioning groove (13).

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