Spherocenter-to-end dimension detecting device

Abstract

The application relates to a ball center to end size detection device, which comprises a machine base, a positioning table, a bearing table, a driving part one and a measuring device, the positioning table is arranged on the machine base, a spherical surface positioning groove for positioning a ball head is arranged on the top surface of the positioning table, when the ball head is placed in the spherical surface positioning groove, the ball center of the ball head is located on the axis of the spherical surface positioning groove, the bearing table is slidingly connected on the machine base along the axis direction of the spherical surface positioning groove, the driving part one drives the bearing table to move, the bearing table is used for supporting one end of a rod body far away from the ball head, and the measuring device is arranged on the bearing table and is used for detecting the distance from the axis of the spherical surface positioning groove to the end surface of the rod body far away from the ball head. When an operator places the ball head on the spherical surface positioning groove, the ball center of the ball head is automatically aligned with the axis of the spherical surface positioning groove, so that the positioning of the ball center of the ball head is simplified by using the spherical surface positioning groove, and the operator can be greatly facilitated to directly detect the ball head pin.

Description

Technical Field

[0001] The present application relates to the field of detection devices, and in particular to a device for detecting the size from the center to the end of a sphere. Background Art

[0002] Ball studs are widely used in independent suspension systems. Control arms or thrust rods are often connected to other components via ball studs at their ends. The main function of ball studs is to enable wheel bouncing and steering movements.

[0003] A ball stud in the related art consists of a ball head and a rod, one end of which is fixedly connected to the ball head and integral with the rod. When measuring whether a produced ball stud meets standards, one test involves measuring the distance from the center of the ball head to the end of the rod distal to the ball head. Operators place the workpiece on a three-dimensional coordinate measuring machine to measure the required value. If the measured value is within the acceptable range of the standard, the product is considered qualified.

[0004] The above-mentioned related technical solutions have the following defects: the three-coordinate measuring machine is large in size and has a high cost. It is usually placed in a special laboratory for use. After the operator produces the ball stud in the workshop, he needs to bring the ball stud to the laboratory and then use the three-coordinate measuring machine to measure it. The whole process is rather cumbersome. Summary of the Invention

[0005] In order to facilitate operators to directly inspect the ball studs after they are produced in the workshop, the present application provides a device for detecting the size from the center of the ball to the end.

[0006] The present application provides a device for detecting the size of a ball from the center to the end, which adopts the following technical solution:

[0007] A device for detecting the size from the center of a ball to the end, comprising a machine base, a positioning platform, a receiving platform, a driving member and a measuring device, wherein the positioning platform is arranged on the machine base, and a spherical positioning groove for positioning a ball head is provided on the top surface of the positioning platform, and when the ball head is placed in the spherical positioning groove, the center of the ball head is located on the axis of the spherical positioning groove, and the receiving platform is slidably connected to the machine base along a direction parallel to the axis of the spherical positioning groove, and the driving member drives the receiving platform to move, and the receiving platform is used to support one end of the rod body away from the ball head, and the measuring device is arranged on the receiving platform and is used to detect the distance from the axis of the spherical positioning groove to the end face of the rod body away from the ball head.

[0008] By adopting the above technical solution, when the operator places the ball head on the spherical positioning groove, the center of the ball head is automatically aligned with the axis of the spherical positioning groove. Since the position of the center of the ball is the most difficult to determine during the measurement process, and since the axis of the spherical positioning groove remains unchanged after the first marking, the spherical positioning groove is used to simplify the positioning of the center of the ball head, and the receiving table is used to adjust the horizontality of the rod body, so that the data measured by the measuring device is accurate, which can greatly facilitate the operator to directly inspect the ball stud after the ball stud is produced in the workshop.

[0009] Preferably, it further comprises a second driving member, the positioning platform is slidably connected to the machine base along a moving direction perpendicular to the receiving platform, and the second driving member drives the positioning platform to move.

[0010] By adopting the above technical solution, the detection device can measure ball studs of different lengths.

[0011] Preferably, the driving member includes a first screw and two fixed blocks, a support seat is provided on the machine base, the axial direction of the first screw is parallel to the sliding direction of the receiving platform, the first screw is threadedly connected to the support seat, a first annular groove is coaxially provided on the outer wall of the first screw, the fixed block is detachably connected to the receiving platform, the fixed block is slidably connected to the support seat along a sliding direction parallel to the receiving platform, a semicircular groove matching the first annular groove is provided on the fixed block, and the first screw is rotatably connected in the two semicircular grooves.

[0012] By adopting the above technical solution, the operator aligns the semicircular grooves on the two fixed blocks with the first annular groove, and then fixes the fixed blocks on the support seat so that the inner walls of the semicircular grooves fit against the outer walls of the first annular groove. At this time, the first screw is equivalent to being rotatably connected to the receiving platform. Then the operator rotates the first screw to move the first screw threadedly connected to the support seat, thereby driving the receiving platform to move.

[0013] Preferably, the measuring device is a micrometer, which is arranged on the receiving platform, and the length direction of the measuring pointer of the micrometer is parallel to the length direction of the rod body, and the measuring pointer of the micrometer is used to abut against the end face of the rod body away from the ball head.

[0014] By adopting the above technical solution, when measuring the size from the center of the ball to the end of the ball stud, the operator first places the standard part on the detection device, and then uses the measuring pointer of the micrometer to abut the end face of the rod body. At this time, the degree of the micrometer is the standard value. Then the operator takes another produced ball stud and places it on the detection device, and also uses the measuring pointer of the micrometer to abut the end face of the rod body. At this time, the degree of the micrometer is the measured value. The measured value is compared with the standard value. If the difference is within the allowable range, the workpiece can be judged as qualified.

[0015] Preferably, a V-shaped groove is provided on the receiving platform for placing the rod body.

[0016] By adopting the above technical solution, when the rod body is placed in the V-shaped groove, the outer wall of the rod body will abut against the side walls of the V-shaped groove. The V-shaped groove can limit the rod body so that the rod body will not be displaced on the receiving platform.

[0017] Preferably, it further includes a first spring, an air blowing pipe and an air suction pipe, the positioning platform includes a first platform and a second platform, the first platform is arranged on the machine base, a first groove is provided on the top surface of the first platform, the second platform is always slidably connected to the first groove along a sliding direction parallel to the receiving platform, the first spring is arranged on the second platform and is used to drive the second platform to always move toward a side away from the first platform, the spherical positioning groove is provided on the top surface of the second platform, when the ball head is placed on the spherical positioning groove, the second platform moves to abut against the bottom surface of the first groove, so that the space where the first groove is located below the second platform is a first cavity, and the first cavity is always in a sealed setting;

[0018] One end of the air blowing pipe is connected to the first cavity, and the other end of the air blowing pipe is arranged near the receiving platform and is used to blow away dust and debris on the receiving platform that supports the rod body. The air blowing pipe is provided with a first one-way valve, which only allows the gas from the first cavity to enter the air blowing pipe;

[0019] One end of the suction pipe is connected to the first cavity, and the other end of the blowing pipe is arranged near the spherical positioning groove and is used to suck away dust and debris in the spherical positioning groove and its surroundings. A second one-way valve is provided on the suction pipe, and the second one-way valve only allows the gas in the suction pipe to enter the first cavity.

[0020] By adopting the above technical solution, when there is dust and impurities on the receiving table, placing the end of the rod body on the receiving table will affect the horizontality of the rod body, resulting in inaccurate measurement results. Therefore, when the ball head is placed on the spherical positioning groove, the weight of the workpiece first presses down the second table, and the gas in the first cavity enters the blow pipe through the first one-way valve to blow away the dust and debris on the receiving table, and then the end of the rod body is placed on the receiving table; when the workpiece is removed after inspection, the volume of the first cavity increases under the action of the spring, and the gas will be sucked into the first cavity through the suction pipe and the second one-way valve, thereby forming an airflow to suck away the dust and debris in the spherical positioning groove and its surroundings, preparing for the placement of the next workpiece.

[0021] Preferably, it also includes a blowing head, a rocker arm and a second spring, a vertical block is provided on the receiving platform, a fan-shaped groove is provided on the vertical block, the rocker arm is rotatably connected to the vertical block, one end of the rocker arm is movably connected in the fan-shaped groove and divides the fan-shaped groove into a second cavity and a third cavity that are not connected to each other, the other end of the rocker arm extends out of the vertical block, the end of the blowing pipe away from the first cavity passes through the vertical block and is fixed to the end of the rocker arm extending out of the vertical block, the blowing head is connected to the end of the blowing pipe away from the first cavity, and a first through hole connected to the second cavity is provided on the blowing pipe, the second spring is arranged on the rocker arm and always drives the rocker arm to move toward one side of the second cavity, and when the ball head is placed on the second platform, the blowing head sweeps across the receiving platform.

[0022] By adopting the above technical solution, when the ball head is placed in the spherical positioning groove, the gas in the first cavity enters the blowing pipe through the first one-way valve. While the gas is blown out from the blowing head, the gas also leaks from the first through hole to the second cavity, causing the air pressure in the second cavity to increase, thereby driving the swing rod to rotate toward the third cavity, and then the swing rod drives the blowing head to sweep across the receiving platform, thereby achieving a wider range of cleaning.

[0023] Preferably, it also includes an air suction head, an arc block and a third spring, an arc groove is provided on the second platform, the arc groove is located on the outside of the spherical positioning groove, the arc block is slidably connected to the arc groove along the circumferential direction of the spherical positioning groove, the arc block divides the arc groove into a fourth cavity and a fifth cavity that are not connected to each other, the third spring is provided on the arc block and drives the arc block to always move toward the side of the fourth cavity, an inner cavity is provided in the arc block, a second through hole connected to the third cavity is provided on the inner cavity, the end of the air suction pipe away from the first cavity is connected to the air suction head through the inner cavity, the air suction head is located in the spherical positioning groove and is arranged toward the notch of the spherical positioning groove, and when the ball head is removed from the second platform, the air suction head bypasses the notch of the spherical positioning groove.

[0024] By adopting the above technical solution, when the ball head is picked up from the second platform, the gas is sucked into the first cavity through the suction pipe, the inner cavity and the second one-way valve. At this time, the air pressure in the inner cavity drops rapidly, and the gas in the third cavity enters the inner cavity from the second through hole, so that the air pressure in the third cavity will be lower than the air pressure in the fourth cavity. At this time, the arc block will move toward the side of the third cavity, thereby driving the suction head to rotate around the notch of the spherical positioning groove, thereby absorbing dust and impurities near the notch of the spherical positioning groove.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] By setting the spherical positioning groove, when the operator places the ball head on the spherical positioning groove, the center of the ball head is automatically aligned with the axis of the spherical positioning groove. By using the spherical positioning groove to simplify the positioning of the ball head center, it can greatly facilitate the operator to directly test the ball stud after the ball stud is produced in the workshop;

[0027] By setting the V-shaped groove, when the rod body is placed in the V-shaped groove, the outer wall of the rod body will abut against the side walls of the V-shaped groove. The V-shaped groove can limit the rod body so that the rod body will not be offset on the receiving platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a structural diagram of the ball stud of the embodiment of the present application when placed on the positioning platform and the receiving platform.

[0030] Figure 3 It is a structural diagram of the positioning platform according to an embodiment of the present application.

[0031] Figure 4 yes Figure 1 Partial cross-sectional view along line AA.

[0032] Figure 5 yes Figure 2 Cross-sectional view along line BB.

[0033] Figure 6 Figure 5 Enlarged view of point C in the middle.

[0034] Figure 7 yes Figure 1 Cross-sectional view along the DD line.

[0035] Figure 8 Figure 3 Enlarged view of point E in the middle.

[0036] Explanation of reference numerals: 1. base; 11. support base; 111. vertical groove; 2. positioning platform; 21. first platform; 211. first groove; 2111. limiting groove; 2112. second groove; 2113. extension groove; 2114. first cavity; 212. arc groove; 2121. fourth cavity; 2122. fifth cavity; 22. second platform; 221. limiting ring; 222. spherical positioning groove; 23. second driving member; 231. second screw; 232. movable plate; 233. extension block; 234. second force applying block; 24. first spring; 3. receiving platform; 31. V-shaped groove; 32. first driving member; 321. first screw; 3211. first ring groove; 322 , fixing block; 3221, semicircular groove; 323, first bolt; 4, measuring device; 41, dial indicator; 42, first rod; 43, second rod; 44, second bolt; 45, third bolt; 5, ball stud; 51, ball head; 52, rod body; 61, air blowing pipe; 611, first through hole; 62, air blowing head; 63, rocker arm; 64, second spring; 65, vertical block; 651, fan-shaped groove; 652, second cavity; 653, third cavity; 71, suction pipe; 72, suction head; 721, filter head; 722, fixing handle; 723, adsorption sheet; 73, arc block; 731, inner cavity; 732, second through hole; 74, third spring; 75, sliding groove. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-8 This application is described in further detail.

[0038] An embodiment of the present application discloses a device for detecting the size from the center to the end of a sphere.

[0039] Reference Figure 1 、 Figure 2 The device for detecting the size of a ball from the center to the end of the ball in this embodiment includes a base 1, a positioning platform 2, a receiving platform 3, a driving member 1 32, a driving member 2 23, and a measuring device 4. The base 1 is used to be placed on a platform, the positioning platform 2 is slidably connected to the base 1 in the horizontal direction, and the driving member 2 23 drives the positioning platform 2 to move on the base 1. The driving member 2 23 includes a second screw 231, a movable plate 232, and an extension block 233. The movable plate 232 is slidably connected to the base 1 in a direction parallel to the movement of the positioning platform 2. The positioning platform 2 is fixed on the top surface of the movable plate 232. The extension block 233 is fixed on the outer wall of the base 1. The axial direction of the second screw 231 is parallel to the sliding direction of the extension block 233. The second screw 231 is threadedly connected to the extension block 233. The end of the second screw 231 close to the movable plate 232 is rotatably connected to the movable plate 232. The end of the second screw 231 away from the movable plate 232 is fixed with a second force applying block 234 for manual force application.

[0040] Reference Figure 1 、 Figure 3The positioning platform 2 includes a first platform 21 and a second platform 22. The first platform 21 is fixed on the top surface of the movable plate 232. A first groove 211 is provided on the top surface of the first platform 21. A limiting ring 221 is provided at the bottom end of the second platform 22. The first groove 211 includes a limiting groove 2111 matching the limiting ring 221 and a second groove 2112 matching the second platform 22. The limiting groove 2111 is located directly below the second groove 2112 and is connected to the second groove 2112. The limiting ring 221 is slidably connected in the limiting groove 2111 along the vertical direction, and the second platform 22 is slidably connected in the second groove 2112 along the vertical direction. An extension groove 2113 is provided on the bottom surface of the limiting groove 2111, and a first spring 24 is provided on the limiting groove 2111. The two ends of the first spring 24 respectively abut against the bottom surface of the second platform 22 and the bottom wall of the extension groove 2113. The second spring 64 is always in a compressed state. When there is no external force acting on the second platform 22, the limiting ring 221 always moves up under the action of the first spring 24 to abut against the top wall of the limiting groove 2111.

[0041] Reference Figure 1 、 Figure 3 The top surface of the second platform 22 is provided with a spherical positioning groove 222 for positioning the ball head 51. The axis of the spherical positioning groove 222 is vertical, and the cross-section of the spherical positioning groove 222 is circular. When the ball head 51 is placed in the spherical positioning groove 222, the center of the ball head 51 automatically aligns with the axis of the spherical positioning groove 222. When the full weight of the ball stud 5 acts on the second platform 22, the second platform 22 moves downward until it abuts the bottom wall of the retaining groove 2111. The space below the retaining groove 2111 on the second platform 22 and the retaining ring 221 forms a first chamber 2114, which remains sealed.

[0042] Reference Figure 1 、 Figure 2 A support base 11 is fixed on the top surface of the machine base 1. The support base 11 is arranged vertically. A vertical groove 111 is opened in the support base 11 along the vertical direction. The receiving platform 3 is slidably connected in the vertical groove 111 along the horizontal vertical direction. The driving member 1 32 drives the receiving platform 3 to move. A V-shaped groove 31 is opened on the top surface of the receiving platform 3 to receive the end of the rod body 52 away from the ball head 51. When the end of the rod body 52 is placed in the V-shaped groove 31, the length direction of the rod body 52 is parallel to the length direction of the V-shaped groove 31. The outer wall of the rod body 52 will abut against the side walls of the V-shaped groove 31. The V-shaped groove 31 can limit the position of the rod body 52 so that the rod body 52 will not deviate from the position on the receiving platform 3.

[0043] Reference Figure 1 、 Figure 4The driving member 32 includes a first screw 321 and two fixing blocks 322. The axis of the first screw 321 is vertically arranged. The first screw 321 is threadedly connected to the support base 11. The top end of the first screw 321 extends above the support base 11, and the bottom end of the first screw 321 extends into the vertical slot 111. A first annular groove 3211 is coaxially formed on the outer wall of the bottom end of the first screw 321. The two fixing blocks 322 are both detachably connected to the receiving platform 3. A first bolt 323 is connected to the fixing block 322. One end of the first bolt 323 passes through the fixing block 322 and is threadedly connected to the receiving platform 3. The two fixing blocks 322 are arranged opposite to each other and are respectively located on both sides of the first screw 321. A semicircular groove 3221 matching the first annular groove 3211 is opened on the side surface of the two fixing blocks 322 opposite to each other. When the fixing blocks 322 are fixed on the receiving platform 3, the inner wall of the first annular groove 3211 fits on the inner wall of the two semicircular grooves 3221, and the first screw 321 is rotatably connected in the two semicircular grooves 3221.

[0044] Reference Figure 1 、 Figure 4 The operator aligns the semicircular grooves 3221 on the two fixing blocks 322 with the first annular groove 3211, and then fixes the fixing blocks 322 on the support seat 11 so that the inner wall of the semicircular groove 3221 fits against the outer wall of the first annular groove 3211. At this time, the first screw 321 is equivalent to being rotatably connected to the receiving platform 3. Then the operator rotates the first screw 321 to move the first screw 321 threadedly connected to the support seat 11, thereby driving the receiving platform 3 to move.

[0045] Reference Figure 2 When the operator places the ball head 51 on the spherical positioning groove 222, the center of the ball head 51 is automatically aligned with the axis of the spherical positioning groove 222, and the end of the rod body 52 abuts against the V-groove 31. By moving the positioning platform 2, ball head pins 5 of different lengths can be adapted, and by moving the receiving platform 3, the horizontality of the rod body 52 can be adjusted.

[0046] Reference Figure 1 、 Figure 2 The measuring device 4 is a dial indicator 41. A first rod 42 and a second rod 43 are detachably connected to the side of the receiving platform 3 away from the positioning platform 2. The first rod 42 is provided with a second bolt 44. One end of the second bolt 44 passes through one end of the first rod 42 and is threadedly connected to the receiving platform 3. The second rod 43 is provided with a third bolt 45. One end of the third bolt 45 passes through one end of the second rod 43 and is threadedly connected to the end of the first rod 42 away from the second bolt 44. The dial indicator 41 is fixed to the end of the second rod 43 away from the third bolt 45. By providing the first rod 42 and the second rod 43, the position of the dial indicator 41 can be easily adjusted.

[0047] Reference Figure 2 The length direction of the measuring pointer of the micrometer 41 is parallel to the length direction of the rod body 52. ​​The measuring pointer of the micrometer 41 faces the side of the positioning platform 2 and is used to abut against the end face of the rod body 52 away from the ball head 51. The method of using the micrometer 41 to measure whether the workpiece is qualified is as follows: when measuring the size from the center of the ball to the end of the ball stud 5, the operator first places the standard part on the detection device, and then abuts the measuring pointer of the micrometer 41 against the end face of the rod body 52. ​​At this time, the degree of the micrometer 41 is the standard value. Then the operator takes other produced ball studs 5 and places them on the detection device. In the same way, the measuring pointer of the micrometer 41 abuts against the end face of the rod body 52. ​​At this time, the degree of the micrometer 41 is the measured value. The measured value is compared with the standard value. If the difference is within the allowable range, the workpiece can be judged to be qualified. It can greatly facilitate the operator to directly test the ball studs 5 after they are produced in the workshop.

[0048] Reference Figure 5 、 Figure 6 , the size detection device from the center of the ball to the end also includes an air blow pipe 61, an air blow head 62, a rocker arm 63 and a second spring 64, and the air blow pipe 61 is a hose. A vertical block 65 is fixed on the top surface of the receiving platform 3, and the vertical block 65 is located on one side of the V-shaped groove 31. A fan-shaped groove 651 is provided on the vertical block 65, and the rocker arm 63 is rotatably connected to the vertical block 65. The axial direction of the rocker arm 63 is parallel to the length direction of the V-shaped groove 31. One end of the rocker arm 63 is movably connected in the fan-shaped groove 651 and divides the fan-shaped groove 651 into a second cavity 652 and a third cavity 653 that are not connected to each other. The second cavity 652 is located above the third cavity 653, and the other end of the rocker arm 63 extends out of the vertical block 65. Refer to Figure 3 、 Figure 6 One end of the air blow pipe 61 communicates with the first chamber 2114. The other end of the air blow pipe 61 passes through the vertical block 65 and is fixed to the end of the rocker arm 63 extending from the vertical block 65. The air blow head 62 is fixed to and connected to the end of the air blow pipe 61 extending from the vertical block 65. The air blow pipe 61 has a first through hole 611 that communicates with the second chamber 652. A second spring 64 is disposed within the third chamber 653. The two ends of the second spring 64 respectively abut the bottom surface of the rocker arm 63 and the bottom end of the third chamber 653, driving the rocker arm 63 to rotate toward the second chamber 652. The air blow pipe 61 is equipped with a first one-way valve that only allows air from the first chamber 2114 to enter the air blow pipe 61. The air blow pipe 61 has a first through hole 611 that communicates with the second chamber 652. The air blow head 62 is used to blow away dust and debris within the V-shaped groove 31.

[0049] Reference Figure 3 、 Figure 6When the ball head 51 is placed in the spherical positioning groove 222, the first chamber 2114 is compressed, and the gas in the first chamber 2114 enters the blowing pipe 61 through the first one-way valve. While the gas is blown out from the blowing head 62, the gas also leaks from the first through hole 611 to the second chamber 652, causing the air pressure in the second chamber 652 to increase, thereby driving the swing rod 63 to rotate toward the third chamber 653, and then the swing rod 63 drives the blowing head 62 to sweep across the receiving platform 3, achieving a wider range of cleaning.

[0050] Reference Figure 3 、 Figure 7 The size detection device from the center of the sphere to the end also includes an air suction pipe 71, two air suction heads 72, two arc blocks 73 and two third springs 74. The air suction pipe 71 is a hose. Two arc grooves 212 are provided on the second platform 22. The two arc grooves 212 are respectively located on both sides of the spherical positioning groove 222 and surround the spherical positioning groove 222. The two arc blocks 73 correspond to the two arc grooves 212 respectively, and the centers of the two arc grooves 212 are located on the axis of the spherical positioning groove 222. The arc block 73 is slidably connected to the arc groove 212 along the arc direction of the arc groove 212. The arc block 73 divides the arc groove 212 into a fourth cavity 2121 and a fifth cavity 2122 that are not connected to each other. The two third springs 74 correspond to the two fifth cavities 2122 respectively. The third springs 74 are arranged in the corresponding fifth cavities 2122. The two ends of the third spring 74 respectively abut on the arc block 73 and the end face of the fifth cavity 2122 away from the fourth cavity 2121. The third spring 74 is always in a compressed state and drives the arc block 73 to always move toward the side of the fourth cavity 2121.

[0051] Reference Figure 7 、 Figure 8The arc-shaped block 73 defines a sealed inner cavity 731. A second through hole 732, which communicates with the third cavity 653, is defined on the side of the inner cavity 731 adjacent to the third cavity 653. One end of the suction pipe 71 communicates with the first cavity 2114, while the other end of the suction pipe 71 communicates with the suction head 72 through the inner cavity 731. A second one-way valve is provided on the suction pipe 71, which only allows gas within the suction pipe 71 to enter the first cavity 2114. The suction head 72 includes a fixed handle 722 and a filter head 721. One end of the fixed handle 722 is fixed to the arc block 73 and communicates with the inner cavity 731. The other end of the fixed handle 722 is fixed to the filter head 721 and communicates with the filter head 721. A suction sheet 723 is fixed within the filter head 721. The suction sheet 723 blocks the connection between the fixed handle 722 and the filter head 721 and is used to absorb dust and impurities near the notch of the spherical positioning groove 222. The suction sheet 723 does not hinder the flow of gas. Two sliding grooves 75 are formed on the inner wall of the spherical positioning groove 222. The two sliding grooves 75 correspond to the two arc grooves 212 and communicate with the corresponding arc grooves 212. The two fixed handles 722 are slidably connected to the two sliding grooves 75, and the arc block 73 always blocks the corresponding sliding groove 75.

[0052] Reference Figure 2 、 Figure 3 When the ball head 51 is picked up from the second platform 22, refer to Figure 3 、 Figure 7 The gas is sucked into the first chamber 2114 through the suction pipe 71, the inner chamber 731 and the second one-way valve. At this time, the air pressure in the inner chamber 731 drops rapidly, and the gas in the third chamber 653 enters the inner chamber 731 from the second through hole 732, so that the air pressure in the third chamber 653 will be lower than the air pressure in the fourth chamber 2121. At this time, the arc block 73 will move toward the side of the third chamber 653, thereby driving the suction head 72 to rotate around the notch of the spherical positioning groove 222, thereby absorbing dust and impurities near the notch of the spherical positioning groove 222.

[0053] The operating principle of a device for detecting the size from the center of a ball to the end of a ball pin 5 is as follows: when an operator places the ball head 51 on the spherical positioning groove 222, the center of the ball head 51 is automatically aligned with the axis of the spherical positioning groove 222, and the end of the rod body 52 abuts against the V-groove 31. By moving the positioning platform 2, ball pins 5 of different lengths can be adapted, and by moving the receiving platform 3, the horizontality of the rod body 52 can be adjusted. When measuring the size from the center of a ball pin 5 to the end, the operator first places a standard part on the detection device, and then abuts the measuring pointer of the micrometer 41 against the end face of the rod body 52. ​​At this time, the degree of the micrometer 41 is the standard value. The operator then places another produced ball pin 5 on the detection device and similarly abuts the measuring pointer of the micrometer 41 against the end face of the rod body 52. ​​At this time, the degree of the micrometer 41 is the measured value. The measured value is compared with the standard value. If the difference is within the allowable range, the workpiece can be judged to be qualified. It can greatly facilitate operators to directly test the ball stud 5 after the ball stud 5 is produced in the workshop.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for detecting the size of a ball from the center to the end, characterized in that: The invention comprises a machine base (1), a positioning platform (2), a receiving platform (3), a driving member (32) and a measuring device (4), wherein the positioning platform (2) is arranged on the machine base (1), a spherical positioning groove (222) for positioning the ball head (51) is provided on the top surface of the positioning platform (2), when the ball head (51) is placed in the spherical positioning groove (222), the center of the ball head (51) is located on the axis of the spherical positioning groove (222), the receiving platform (3) is connected to the machine base (1) in a sliding manner parallel to the axis of the spherical positioning groove (222), the driving member (32) drives the receiving platform (3) to move, the receiving platform (3) is used to support one end of the rod body (52) away from the ball head (51), and the measuring device (4) is arranged on the receiving platform (3) and is used to detect the distance from the axis of the spherical positioning groove (222) to the rod body (52). The distance from the end face of the ball head (51), the driving member (32) includes a first screw (321) and two fixed blocks (322), the machine base (1) is provided with a support seat (11), the axial direction of the first screw (321) is parallel to the sliding direction of the receiving platform (3), the first screw (321) is threadedly connected to the support seat (11), the outer wall of the first screw (321) is coaxially provided with a first annular groove (3211), the fixed block (322) is detachably connected to the receiving platform (3), the fixed block (322) is slidably connected to the support seat (11) along a sliding direction parallel to the receiving platform (3), the fixed block (322) is provided with a semicircular groove (3221) matching the first annular groove (3211), and the first screw (321) is rotatably connected in the two semicircular grooves (3221).

2. The device for detecting the size from the center to the end of a sphere according to claim 1, characterized in that: It also includes a second driving member (23), the positioning platform (2) is slidably connected to the machine base (1) along a moving direction perpendicular to the receiving platform (3), and the second driving member (23) drives the positioning platform (2) to move.

3. The device for detecting the size from the center to the end of a sphere according to claim 1, characterized in that: The measuring device (4) is a micrometer (41), which is arranged on the receiving platform (3). The length direction of the measuring pointer of the micrometer (41) is parallel to the length direction of the rod body (52), and the measuring pointer of the micrometer (41) is used to abut against the end surface of the rod body (52) away from the ball head (51).

4. The device for detecting the size from the center to the end of a sphere according to claim 1, characterized in that: The receiving platform (3) is provided with a V-shaped groove (31) for placing the rod body (52).

5. The device for detecting the size from the center to the end of a ball according to claim 1, characterized in that: It also includes a first spring (24), an air blowing pipe (61) and an air suction pipe (71), the positioning platform (2) includes a first platform (21) and a second platform (22), the first platform (21) is arranged on the machine base (1), a first groove (211) is provided on the top surface of the first platform (21), the second platform (22) is always slidably connected to the first groove (211) along a sliding direction parallel to the receiving platform (3), the first spring (24) is arranged on the second platform (22) and is used to drive the second platform (22) to always move toward a side away from the first platform (21), the spherical positioning groove (222) is provided on the top surface of the second platform (22), when the ball head (51) is placed on the spherical positioning groove (222), the second platform (22) moves to abut against the bottom surface of the first groove (211), so that the space where the first groove (211) is located below the second platform (22) is the first cavity (2114), and the first cavity (2114) is always in a sealed setting; One end of the air blowing pipe (61) is in communication with the first cavity (2114), and the other end of the air blowing pipe (61) is arranged close to the receiving platform (3) and is used to blow away dust and debris on the position of the receiving platform (3) used to support the rod body (52). The air blowing pipe (61) is provided with a first one-way valve, and the first one-way valve only allows the gas in the first cavity (2114) to enter the air blowing pipe (61); One end of the suction pipe (71) is in communication with the first cavity (2114), and the other end of the blowing pipe (61) is arranged close to the spherical positioning groove (222) and is used to suck away dust and debris in and around the spherical positioning groove (222). A second one-way valve is provided on the suction pipe (71), and the second one-way valve only allows the gas in the suction pipe (71) to enter the first cavity (2114).

6. The device for detecting the size from the center to the end of a sphere according to claim 5, characterized in that: The invention also includes a blowing head (62), a swing rod (63) and a second spring (64); a vertical block (65) is provided on the receiving platform (3); a fan-shaped groove (651) is provided on the vertical block (65); the swing rod (63) is rotatably connected to the vertical block (65); one end of the swing rod (63) is movably connected in the fan-shaped groove (651) and divides the fan-shaped groove (651) into a second cavity (652) and a third cavity (653) which are not communicated with each other; the other end of the swing rod (63) extends out of the vertical block (65); the blowing pipe (61) is away from the first cavity (2114) ) passes through the vertical block (65) and is fixed to the end of the swing rod (63) extending out of the vertical block (65); the blowing head (62) is connected to the end of the blowing pipe (61) away from the first cavity (2114); the blowing pipe (61) is provided with a first through hole (611) connected to the second cavity (652); the second spring (64) is arranged on the swing rod (63) and always drives the swing rod (63) to move toward the second cavity (652); when the ball head (51) is placed on the second platform (22), the blowing head (62) sweeps across the receiving platform (3).

7. The device for detecting the size from the center to the end of a sphere according to claim 5, characterized in that: The invention also includes an air suction head (72), an arc block (73) and a third spring (74); an arc groove (212) is provided on the second platform (22); the arc groove (212) is located outside the spherical positioning groove (222); the arc block (73) is connected to the arc groove (212) in a sliding manner along the circumferential direction of the spherical positioning groove (222); the arc block (73) separates the arc groove (212) into a fourth cavity (2121) and a fifth cavity (2122) which are not connected to each other; the third spring (74) is provided on the arc block (73) and drives the arc block (73) to always face the fourth cavity (2121) moves to one side, an inner cavity (731) is opened in the arc block (73), and a second through hole (732) connected to the third cavity (653) is opened on the inner cavity (731), and the end of the suction pipe (71) away from the first cavity (2114) is connected to the suction head (72) through the inner cavity (731), and the suction head (72) is located in the spherical positioning groove (222) and is set towards the notch of the spherical positioning groove (222). When the ball head (51) is removed from the second platform (22), the suction head (72) bypasses the notch of the spherical positioning groove (222).

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