Miniature stepped shaft outer diameter measuring and classifying device

Abstract

The invention discloses a miniature stepped shaft outer diameter measuring and classifying device which comprises a rack, a stepped shaft conveying device, a material pushing device, a material moving device, a measuring device and a classifying device, and the material pushing device, the material moving device, the measuring device and the classifying device are sequentially arranged on the rack. Stepped shafts to be measured are fed into the measuring device through the material pushing device and the material moving device, are measured through the measuring device and then are fed into the classifying device, and the classifying device classifies the stepped shafts according to whether the measuring result of the measuring device is qualified or not. According to the outer diameter measuring and classifying device for the miniature stepped shafts, through the arrangement of the conveying device, the pushing device, the moving device, the measuring device and the classifying device, automatic measurement of the outer diameters of the stepped shafts can be effectively achieved.

Description

Technical Field

[0001] The invention relates to an outer diameter measuring device, and more particularly to an outer diameter measuring and classification device for miniature stepped shafts. Background Art

[0002] The traditional measurement method is to manually measure the different shaft diameters of stepped shafts and classify them manually, which is inefficient. Because each person's measurement method is different, it is difficult to unify the standards and errors are prone to occur. It is necessary to manually measure standard parts frequently to ensure the normal operation of the measuring instrument, which is prone to benchmarking errors. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a miniature stepped shaft outer diameter measuring and classification device capable of automatically measuring the shaft diameter of the stepped shaft.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for measuring and classifying the outer diameter of a miniature stepped shaft, characterized in that it includes a frame, a stepped shaft conveying device, and a pushing device, a material moving device, a measuring device and a classification device which are sequentially arranged on the frame. The stepped shaft to be measured is sent out from the conveying device, and is sent into the measuring device through the pushing device and the material moving device. After being measured by the measuring device, it is sent into the classification device. The classification device classifies the stepped shaft according to whether the measurement result of the measuring device is qualified.

[0005] As a further improvement of the present invention, the pushing device includes a pushing cylinder, a pushing track and a sensing head, the pushing track is fixedly mounted on a frame, the conveying device includes a conveying vibration plate and a conveying frame, the conveying vibration plate is arranged on the conveying frame, the conveying vibration plate is connected to the conveying track, the end of the conveying track extends to the side wall of the pushing track to convey the step shaft to be measured into the pushing track, the cylinder body of the pushing cylinder is fixedly mounted on the frame, the pushing rod of the pushing cylinder is fixed with a pushing rod, one end of the pushing track extends to the pushing cylinder, and the other end extends to the material moving device, so that the step shaft to be measured can be pushed into the material moving device through the action of the pushing rod of the pushing cylinder.

[0006] As a further improvement of the present invention, the material moving device includes a translation base and a fork material rod. The translation base can be slidably arranged on a frame. A work station plate is fixed on the frame below the measuring device. The fork material rod is telescopically installed on the translation base. A fork material groove is provided at one end of the fork material rod facing the work station plate, so that when the fork material rod is extended, the fork material groove cooperates with the work station plate to clamp the stepped shaft to be measured.

[0007] As a further improvement of the present invention, the measuring device includes a measuring frame, a measuring base and a measuring head. The measuring frame is fixed on a position of the frame close to the work station plate. The measuring base can be raised and lowered on the measuring frame and is located above the work station plate. The measuring head is installed on the measuring base and contacts the step shaft to be measured for measurement as the measuring base descends.

[0008] As a further improvement of the present invention, the measuring head includes a head frame, a measuring cylinder, a measuring pen and a measuring probe. A mounting plate is fixed on the measuring base near its upper side surface. The head frame is fixed on the lower side surface of the mounting plate. The probe is fixedly mounted on the lower side surface of the head frame. The cylinder body of the measuring cylinder is fixedly mounted on the measuring base. The head frame is divided into two vertical rod structures spaced apart from each other. The upper ends of the two vertical rod structures are fixedly mounted on the lower side surface of the mounting plate. Two probes are provided, which are respectively fixed on the lower ends of the two vertical rod structures. The pushing rod of the measuring cylinder passes through one of the vertical rod structures and abuts against the other vertical rod structure to push the vertical rod structure to offset so that the two probes are separated from each other.

[0009] As a further improvement of the present invention, a pulling spring is fixed to the side of the mounting plate facing away from the measuring base, one end of the pulling spring is fixed to the mounting plate, and the other end penetrates through a vertical rod structure and is fixed to another vertical rod structure to provide a pulling force to bring the two vertical rod structures closer to each other.

[0010] As a further improvement of the present invention, the two vertical rod structures are formed by square head frame slots, wherein a square deformation hole is opened in the middle of the vertical rod structure away from the measuring cylinder, and the four corners of the deformation hole are all rounded structures. A push rod is formed in the deformation hole, and the end of the push rod of the measuring cylinder is against the side of the push rod, and the end of the measuring pen is facing the side of the push rod.

[0011] As a further improvement of the present invention, the classification device includes a classification cylinder, a waste pipe and a qualified box, the cylinder body of the classification cylinder is fixedly mounted on the frame, the upper end of the waste pipe is fixedly mounted on the frame, a waste opening spaced apart from the side of the work station plate is formed on the frame, the qualified box is fixedly mounted on the side of the frame and is at the end of the work station plate, the pushing rod of the classification cylinder is fixed with a pushing block, the lower side of the pushing block is provided with a receiving groove, the stepped shaft to be measured pushed by the material moving device is sent into the receiving groove, so that when the measurement is qualified, the classification cylinder does not operate, so that when the next stepped shaft is sent by the material moving device, it is pushed into the qualified box, and when the measurement is unqualified, the classification cylinder operates, extends its pushing rod to drive the pushing block to translate and push the stepped shaft into the waste opening.

[0012] The beneficial effect of the present invention is that, through the arrangement of a frame, a stepped shaft conveying device, a pushing device, a material moving device, a measuring device and a classification device, the stepped shaft can be first automatically delivered by the conveying device, and then, through the coordinated action of the pushing device and the material moving device, the stepped shafts can be separated one by one by the action of the pushing device, and then the action of the material moving device can be used to transfer the stepped shafts one by one to the measuring device for measurement, and then classified by the classification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall structural diagram of the miniature stepped shaft outer diameter measurement and classification device of the present invention;

[0014] Figure 2 for Figure 1 Structural schematic diagram of the middle pusher device;

[0015] Figure 3 for Figure 1 Structural schematic diagram of the intermediate material transfer device;

[0016] Figure 4 for Figure 1 Schematic diagram of the structure of the measuring device;

[0017] Figure 5 for Figure 1 Schematic diagram of the structure of the work surface on the middle frame. DETAILED DESCRIPTION

[0018] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0019] Reference Figures 1 to 5 As shown, a miniature stepped shaft outer diameter measuring and sorting device of the present embodiment is characterized in that it includes a frame 1, a stepped shaft conveying device 2, and a pushing device 3, a moving device 4, a measuring device 5 and a sorting device 6 arranged in sequence on the frame 1. The stepped shaft to be measured is sent out from the conveying device 2, and is sent into the measuring device 5 by the pushing device 3 and the moving device 4. After being measured by the measuring device 5, it is sent into the sorting device 6. The sorting device 6 sorts the stepped shaft according to whether the measurement result of the measuring device 5 is qualified. In this way, in the process of using the sorting device of the present embodiment, it is only necessary to pre-store the stepped shaft to be measured in the stepped shaft conveying device 2, and then realize automatic conveying to the pushing device 3 for unloading one by one through the action of the stepped shaft conveying device 2, and then each stepped shaft is sent to the bottom of the measuring device 5 in turn through the action of the moving device 4 for measurement, and finally moved to the sorting device 6 for classification according to the measurement result, thereby realizing automatic stepped shaft measurement simply and effectively.

[0020] Based on the existing implementation methods, the present embodiment adopts a combination of a conveying vibration plate 21 and a conveying frame 22 to realize the automatic feeding of the stepped shaft, and the use of an additional conveying frame 22 to place the conveying vibration plate 21 can avoid the influence of the operation of the conveying vibration plate 21 on the subsequent workstations. Under the premise of solving the problem of automatic discharging, the present embodiment provides the following pushing device 3 structure, including a pushing cylinder 31, a pushing track 32 and an induction head 33, and the pushing track 32 is fixedly mounted on the frame 1, and the specific reference is made to Figure 2 As shown, in the above structure, the cylinder body of the pushing cylinder 31 is fixedly mounted on the frame 1, and the pushing rod of the pushing cylinder 31 is fixed with a pushing rod. One end of the pushing track 32 extends to the pushing cylinder 31, and the other end extends to the material moving device 4, so that the step shaft to be measured is pushed into the material moving device 4 through the action of the pushing rod of the pushing cylinder 31, that is, when the step shaft is transported, the step shaft is first positioned by the side wall of the pushing track 32, and then the step shaft in the positioning process is sent to the material moving device 4 along the pushing track 32 by the action of the pushing cylinder 31 and the pushing rod, and the role of the sensing head 33 is to detect whether there is material on the pushing track 32. If there is material, the pushing cylinder 31 and the pushing rod are controlled to move, and the step shaft is sent out in time.

[0021] Specifically, on the basis of the above-mentioned pushing device 3, this embodiment selects a material moving device 4 which is a combination of a translation base 41 and a fork material rod 42, referring to Figure 3As shown, there are generally more than two fork rods 42, the leftmost one is used for receiving materials, and the rightmost one is for discharging materials. The specific working method is that the translation base 41 is first moved to the leftmost side, so that the fork rod 42 for receiving materials is opposite to the end of the pushing track 32, and then the pushing cylinder 31 and the push rod are moved to send the stepped shaft in the pushing track 32 into the semicircular groove at the end of the fork rod 42 for receiving materials, and then when the translation base 41 is moved to the right, the fork rod 42 for receiving materials is moved to the measuring device 5, and then the fork rod 42 is retracted, and the measuring device 5 measures the stepped shaft at this time, and at the same time, the translation base 41 is reset to the leftmost side, so that the fork rod 42 for receiving materials is opposite to the end of the pushing track 32 again, and the materials are re-connected. At this time, the fork rod 42 for discharging materials is opposite to the stepped shaft below the measuring device 5. Correspondingly, when the translation base 41 moves to the right next time, the stepped shaft under the measuring device 5 is pushed to the classification device 6, thereby effectively realizing the effect of continuous material shifting. In this embodiment, multiple material shifting fork rods 42 can be set between the two material receiving and discharging fork rods 42, so as to achieve the translation of the measuring station under the measuring device 5 when multiple measurements and tests are required. The fork rod 42 in this embodiment is realized by a hollow frame-type base translation. A cylinder is fixed in the hollow frame-type base, and the push rod of the cylinder is fixed to the translation base 41. At the same time, the hollow frame-type base is slidably installed on the translation base 41 by a slide rail, thereby realizing the sliding of the hollow frame-type base, and then driving the fork rod 42 to slide, realizing the equivalent synchronous telescopic effect.

[0022] Specifically, under the premise of realizing the pushing and shifting of the stepped shaft, the present embodiment provides the following measuring device 5, including a measuring frame 51, a measuring base 52 and a measuring head 53. The measuring frame 51 is fixed on the frame 1 at a position close to the work station plate 11. The measuring base 52 is arranged on the measuring frame 51 in a liftable manner and is located above the work station plate 11. The measuring head 53 is installed on the measuring base 52. As the measuring base 52 descends and contacts the stepped shaft to be measured for measurement, the positioning measurement and release of the stepped shaft are realized by adopting the up and down lifting structure. Furthermore, in the present embodiment, the method of benchmarking measurement is adopted to realize the measurement of the stepped shaft, that is, the following measuring head 53 structure is adopted. The measuring head 53 adopts a head frame 531, a measuring cylinder 532 and a measuring head 53. The measuring base 52 is composed of a measuring pen 533 and a measuring head 534, and then a mounting plate 521 is fixed on a position close to the upper side of the measuring base 52, the head frame 531 is fixed on the lower side of the mounting plate 521, the measuring head 534 is fixedly mounted on the lower side of the head frame 531, the cylinder body of the measuring cylinder 532 is fixedly mounted on the measuring base 52, the head frame 531 is divided into two vertical rod structures spaced apart from each other, the upper ends of the two vertical rod structures are fixedly mounted on the lower side of the mounting plate 521, two measuring heads 534 are provided, which are respectively fixed on the lower ends of the two vertical rod structures, and the pushing rod of the measuring cylinder 532 passes through one of the vertical rod structures and abuts against the other vertical rod structure to push the vertical rod structure to deviate so that the two measuring heads 534 are separated from each other, as shown in FIG. The principle of this measurement is to use the measuring pen 533 to measure the distance between the two vertical rod structures, and to measure the distance between the two probes 534 symmetrically, thereby realizing the measurement of the outer diameter of the stepped shaft. Compared with the method of directly measuring the outer diameter of the stepped shaft, the symmetrical measurement method can expand more installation space, so that the measuring pen 533 can be installed above the probe 534, and be isolated from the fork rod 42 of the material moving device 4 up and down, so as to achieve a good measurement effect. For the reset of the two vertical rod structures, this embodiment adopts a simple pulling spring 54 to provide pulling force, so that the structure becomes simple and the operation process is more stable. The vertical rod structure in this embodiment is formed by slotting the square head frame 531, wherein, away from the measuring cylinder A square deformation hole is provided in the middle of the vertical rod structure 532, and the four corners of the deformation hole are all rounded structures. A push rod is formed in the deformation hole, and the end of the push rod of the measuring cylinder 532 is against the side of the push rod, and the end of the measuring pen 533 is facing the side of the push rod. In this way, the combination of the deformation of the head frame 531 and the pulling spring 521 can be used to realize the translational reset of the measuring head 534, simplify the overall operating mechanism, and increase the reliability of the working process. In the process of not measuring, the measuring cylinder 532 is first used to extend the push rod to separate the two measuring heads 534. When measurement is required, the measuring cylinder 532 retracts the push rod so that the two measuring heads 534 are closed under the reset deformation of the head frame 531 and the pulling spring 54, so as to realize the outer diameter measurement of the stepped shaft.The closing force during the measurement is mainly provided by the pulling spring 54, so it will not be too large to cause deformation of the stepped shaft or the probe 534, thereby causing inaccurate outer diameter measurement. In this embodiment, the measuring device 5 repeats the measurement 3 to 5 times to obtain the average value, and then compares it with the standard value for compensation. After the measuring device 5 returns to its original position, the above action cycle continues.

[0023] After the measurement is completed, in this embodiment, classification is achieved by setting a classification cylinder 61. Specifically, a waste pipe 62 is first set on the frame 1 for collecting waste, and a corresponding waste box is set below the waste pipe 62. A qualified box 63 is set on the frame 1 to collect qualified products. Then, a push block is fixed to the push rod of the classification cylinder 61, and a receiving groove is provided on the lower side of the push block. The stepped shaft to be measured pushed by the material moving device 4 is sent into the receiving groove. When the measurement is qualified, the classification cylinder 61 does not work, so that when the next stepped shaft is sent by the material moving device 4, it is pushed into the qualified box 63. When the measurement is unqualified, the classification cylinder 61 is activated, and its push rod is extended to drive the push block to translate and push the stepped shaft into the waste port. In this way, the classification operation can be completed simply and effectively.

[0024] In summary, the miniature stepped shaft outer diameter measuring and sorting device of this embodiment can realize automated transportation, then automatically measure the outer diameter of the stepped shaft, and classify the stepped shaft according to the measurement results.

[0025] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A device for measuring and classifying the outer diameter of a miniature stepped shaft, characterized in that: The invention comprises a frame (1), a stepped shaft conveying device (2), and a pushing device (3), a material moving device (4), a measuring device (5), and a classification device (6) which are sequentially arranged on the frame (1); the stepped shaft to be measured is sent out from the conveying device (2), and is sent into the measuring device (5) by the pushing device (3) and the material moving device (4); after being measured by the measuring device (5), the stepped shaft is sent into the classification device (6); and the classification device (6) classifies the stepped shaft according to whether the measurement result of the measuring device (5) is qualified.

2. The miniature stepped shaft outer diameter measuring and classification device according to claim 1 is characterized in that: The pushing device (3) comprises a pushing cylinder (31), a pushing track (32) and a sensing head (33), wherein the pushing track (32) is fixedly mounted on a frame (1), and the conveying device (2) comprises a conveying vibration plate (21) and a conveying frame (22), wherein the conveying vibration plate (21) is arranged on the conveying frame (22), the conveying vibration plate (21) is connected to the conveying track, and the end of the conveying track extends to the side wall of the pushing track (32) so as to convey the stepped shaft to be measured into the pushing track (32), the cylinder body of the pushing cylinder (31) is fixedly mounted on the frame (1), the pushing rod of the pushing cylinder (31) is fixedly mounted with a pushing rod, one end of the pushing track (32) extends to the pushing cylinder (31), and the other end extends to the material moving device (4), so as to push the stepped shaft to be measured into the material moving device (4) through the action of the pushing rod of the pushing cylinder (31).

3. The miniature stepped shaft outer diameter measuring and classification device according to claim 2 is characterized in that: The material moving device (4) comprises a translation base (41) and a fork material rod (42), wherein the translation base (41) is slidably arranged on a frame (1), a work station plate (11) is fixed to the frame (1) below the measuring device (5), and the fork material rod (42) is telescopically mounted on the translation base (41), and a fork material groove (43) is provided at one end of the fork material rod (42) facing the work station plate (11), so that when the fork material rod (42) is extended, the fork material groove (43) cooperates with the work station plate (11) to clamp the stepped shaft to be measured.

4. The miniature stepped shaft outer diameter measuring and classification device according to claim 3 is characterized in that: The measuring device (5) comprises a measuring frame (51), a measuring base (52) and a measuring head (53); the measuring frame (51) is fixed on a position of the frame (1) close to a work station plate (11); the measuring base (52) is movably arranged on the measuring frame (51) and is located above the work station plate (11); the measuring head (53) is mounted on the measuring base (52) and contacts and measures the stepped shaft to be measured as the measuring base (52) descends.

5. The miniature stepped shaft outer diameter measuring and classification device according to claim 4 is characterized in that: The measuring head (53) comprises a head frame (531), a measuring cylinder (532), a measuring pen (533) and a measuring head (534); a mounting plate (521) is fixed to a position of the measuring base (52) near its upper side; the head frame (531) is fixed to the lower side of the mounting plate (521); the measuring head (534) is fixedly mounted on the lower side of the head frame (531); the cylinder body of the measuring cylinder (532) is fixedly mounted on the measuring base (52); the head frame (531) is divided into two vertical rod structures spaced apart from each other; the upper ends of the two vertical rod structures are fixedly mounted on the lower side of the mounting plate (521); two measuring heads (534) are provided and are respectively fixed to the lower ends of the two vertical rod structures; a pushing rod of the measuring cylinder (532) passes through one of the vertical rod structures and abuts against the other vertical rod structure, so as to push the vertical rod structure to deviate so that the two measuring heads (534) are separated from each other.

6. The miniature stepped shaft outer diameter measuring and classification device according to claim 5 is characterized in that: A pulling spring (54) is fixed to the side of the mounting plate (521) facing away from the measuring base (52), one end of the pulling spring (54) is fixed to the mounting plate (521), and the other end penetrates through a vertical rod structure and is fixed to another vertical rod structure, so as to provide a pulling force to bring the two vertical rod structures closer to each other.

7. The miniature stepped shaft outer diameter measuring and classification device according to claim 6, characterized in that: The two vertical rod structures are formed by slotting a square head frame (531), wherein a square deformation hole is opened in the middle of the vertical rod structure away from the measuring cylinder (532), and the four corners of the deformation hole are all rounded structures. A push rod is formed in the deformation hole, and the end of the push rod of the measuring cylinder (532) is against the side of the push rod, and the end of the measuring pen (533) is opposite to the side of the push rod.

8. The miniature stepped shaft outer diameter measuring and classification device according to claim 7 is characterized in that: The classification device (6) comprises a classification cylinder (61), a waste pipe (62) and a qualified box (63); the cylinder body of the classification cylinder (61) is fixedly mounted on the frame (1); the upper end of the waste pipe (62) is fixedly mounted on the frame (1); a waste opening spaced from the side of the work station plate (11) is formed on the frame (1); the qualified box (63) is fixedly mounted on the side of the frame (1) and is located at the end of the work station plate (11); A push block is fixed to the push rod of the air cylinder (61), and a receiving groove is provided on the lower side of the push block. The stepped shaft to be measured pushed by the material transfer device (4) is sent into the receiving groove. When the measurement is qualified, the classification air cylinder (61) does not operate, and when the next stepped shaft is sent by the material transfer device (4), it is pushed into the qualified box (63). When the measurement is unqualified, the classification air cylinder (61) operates, extends its push rod, drives the push block to translate, and pushes the stepped shaft into the waste material port.

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