Aperture detection device

Abstract

The utility model discloses an aperture detection device which comprises a machine base, a driving piece, a transmission assembly and an aperture detection gauge are arranged on the machine base, and the driving piece is used for driving the transmission assembly to drive the aperture detection gauge to reciprocate up and down in the vertical direction; the aperture detection gauge comprises a go gauge section, a no-go gauge section and a connection section which are sequentially connected from bottom to top. The transmission assembly comprises a movable plate movably connected with the machine base, the aperture detection gauge is arranged on the movable plate through a detection gauge installation part, the detection gauge installation part comprises a connecting shaft which is arranged in the vertical direction and elastically connected with the movable plate, and a connecting section of the aperture detection gauge is detachably connected with the lower end of the connecting shaft. The device can automatically and rapidly detect whether the aperture reaches the standard or not, the working efficiency is high, and the operation process is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to an aperture detection device. Background Art

[0002] In actual production, it is often necessary to detect the inner diameter of parts. The existing detection methods include internal diameter micrometer detection or special go / no-go gauge detection. The internal diameter micrometer can directly measure the diameter of a circular hole. The special go / no-go gauge detection is to process the go gauge size into the lower difference size of the circular hole inner diameter, and the no-go gauge size into the upper difference size of the circular hole inner diameter. During the detection, if the go gauge can pass through the aperture, and if the no-go gauge does not pass through the aperture, the aperture size is judged to be qualified. Using an internal diameter micrometer to measure the aperture requires multiple readings, which is a large workload and low work efficiency. Using a go / no-go gauge for detection is more efficient than using an internal diameter micrometer, but because both use manual detection, the operation process is uncontrollable and cannot meet the needs of large-scale detection and production. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the utility model provides an aperture detection device, which can automatically and quickly detect whether the aperture meets the standard, has high working efficiency, and the operation process is stable and reliable.

[0004] The utility model adopts a technical solution to solve the technical problem: to provide an aperture detection device, including a machine base, on which a driving member, a transmission assembly and an aperture inspection gauge are arranged, wherein the driving member is used to drive the transmission assembly to drive the aperture inspection gauge to reciprocate up and down in the vertical direction;

[0005] The aperture inspection gauge comprises a through gauge section, a stop gauge section and a connecting section which are sequentially connected from bottom to top;

[0006] The transmission assembly includes a movable plate movably connected to the machine base, the aperture gauge is set on the movable plate through a gauge mounting member, the gauge mounting member includes a connecting shaft set in a vertical direction and elastically connected to the movable plate, and the connecting section of the aperture gauge is detachably connected to the lower end of the connecting shaft.

[0007] As a further improvement of the present invention, the transmission assembly is movably connected to the machine base via a fixed plate, and the transmission assembly also includes a guide rail and a slider, the fixed plate is fixedly connected to the machine base, the guide rail is arranged on the fixed plate along the vertical direction, the slider is slidably connected to the guide rail, and the slider is fixedly connected to the movable plate on the side away from the guide rail.

[0008] As a further improvement of the utility model, the movable plate is an L-shaped plate, the vertical section of the L-shaped plate is fixedly connected to the slider toward the side of the fixed plate, and a fixed block is provided on the side away from the fixed plate; the connecting shaft moves along the vertical direction and extends to the horizontal section of the movable plate and the outer side of the fixed block; the connecting shaft is provided with a boss on one side close to the upper end of the horizontal section, and the connecting shaft is provided with a buffer spring at a position between the fixed block and the boss.

[0009] As a further improvement of the utility model, a photoelectric sensor is provided on the fixing plate, and the photoelectric sensor is connected and mounted on one side of the transmission assembly, and the photoelectric sensor is an optical fiber sensor;

[0010] An end cap is provided at the upper end of the connecting shaft. When the optical fiber sensor detects the upper flange of the end cap, it sends a signal indicating that the aperture detection is qualified; otherwise, it sends a signal indicating that the aperture detection is unqualified.

[0011] As a further improvement of the utility model, the driving member is a cylinder, which is installed on the upper part of the fixed plate, and the end of its piston rod is fixedly connected to the top of the vertical section of the movable plate through a connecting head.

[0012] As a further improvement of the present invention, a limiter is provided on the fixed plate, and the limiter is provided on the other side of the transmission assembly and close to the lowermost end of the fixed plate;

[0013] A limiting nut is provided on the upper end of the movable plate and on one side facing the limiting member, and the limiting nut can be adjusted in height relative to the movable plate in the vertical direction.

[0014] As a further improvement of the present invention, the aperture gauge is a hollow cylindrical structure, and the middle part of the connecting shaft is provided with a mounting hole adapted to the connecting section of the aperture gauge, and a connecting hole connected to the hollow cavity of the aperture gauge; the connecting hole extends to the upper end of the boss.

[0015] As a further improvement of the utility model, a gas pressure joint is connected to one side of the boss, and the gas pressure joint is connected to an external gas supply device for providing pressurized gas to the connecting hole to blow away dust in the hole to be tested.

[0016] The beneficial effects of the utility model are:

[0017] 1. The cylinder drives the movable plate to slide up and down, so that the movable plate drives the connecting shaft on it to move up and down along its axial direction, and the connecting shaft then drives the aperture gauge to move up and down, realizing the lifting function of the aperture gauge. That is, when detecting the aperture, the cylinder first drives the aperture gauge down to the aperture of the workpiece, and after the aperture detection is completed, the aperture gauge is lifted;

[0018] 2. The photoelectric sensor cooperates with the end cap at the upper end of the connecting shaft. When the photoelectric sensor detects the end cap, it means that the through gauge section on the aperture inspection gauge has entered the hole of the workpiece but the stop gauge section has not entered the hole of the workpiece, and a signal of qualified hole detection is given. In the two cases where the stop gauge section enters the hole of the workpiece or the through gauge section does not enter the hole of the workpiece, the photoelectric sensor cannot detect the end cap of the connecting shaft and a signal of unqualified hole is given.

[0019] 3. The aperture inspection gauge is set with a hollow cylindrical structure and a gas with a certain pressure is introduced, which can not only detect the holes of the workpiece but also purge the holes before detection to prevent the residual debris and impurities in the hole from affecting the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0022] Figure 3 This is a front view of the utility model;

[0023] Figure 4 For this utility model Figure 3 AA direction profile.

[0024] Combined with the accompanying drawings, the following description is given:

[0025] 1. Machine base; 11. Fixed plate; 2. Driving member; 21. Connecting head; 3. Transmission assembly; 31. Movable plate; 311. Vertical section; 312. Horizontal section; 32. Guide rail; 33. Sliding block; 34. Fixed block; 4. Aperture gauge; 41. Through gauge section; 42. Stop gauge section; 43. Connecting section; 5. Gauge mounting part; 51. Connecting shaft; 511. Boss; 512. Mounting hole; 513. Connecting hole; 52. Buffer spring; 53. End cover; 6. Photoelectric sensor; 61. Connecting frame; 7. Limiting member; 71. Limiting nut; 8. Air pressure connector. DETAILED DESCRIPTION

[0026] A preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.

[0027] See also Figures 1 to 4 The utility model provides an aperture detection device, including a machine base 1, on which a driving member 2, a transmission assembly 3 and an aperture inspection gauge 4 are arranged. The driving member 2 is used to drive the transmission assembly 3 to drive the aperture inspection gauge 4 to reciprocate up and down in the vertical direction. The aperture inspection gauge 4 is used to detect the aperture on the workpiece to determine whether the aperture meets the standard.

[0028] The aperture gauge 4 includes a through gauge section 41, a stop gauge section 42 and a connecting section 43 connected in sequence from bottom to top, that is, the diameter of the through gauge section 41 is the lower tolerance value of the workpiece aperture, and the stop gauge section 42 is the upper tolerance value of the workpiece aperture. The transmission assembly 3 includes a movable plate 31 movably connected to the machine base 1, and the aperture gauge 4 is arranged on the movable plate 31 through a gauge mounting member 5. The gauge mounting member 5 includes a connecting shaft 51 arranged in the vertical direction and elastically connected to the movable plate 31. The connecting section 43 of the aperture gauge 4 is detachably connected to the lower end of the connecting shaft 51. By means of detachable connection, different specifications of aperture gauges 4 can be selected according to the different apertures of the workpiece, thereby improving the scope of application and utilization of the device. The workpiece can be placed on a turntable, and the turntable is used to transport the workpiece to be tested to the bottom of the aperture detection device, and the aperture of the workpiece is detected by the aperture gauge 4. When the through gauge section 41 passes through the hole smoothly and the stop gauge section 42 is stopped by the hole, it indicates that the hole of the workpiece is up to standard.

[0029] Furthermore, the transmission assembly 3 is movably connected to the base 1 through the fixed plate 11, and the transmission assembly 3 also includes a guide rail 32 and a slider 33. The fixed plate 11 is fixedly connected to the base 1, the guide rail 32 is arranged on the fixed plate 11 in the vertical direction, the slider 33 is slidably connected to the guide rail 32, and the side of the slider 33 away from the guide rail 32 is fixedly connected to the movable plate 31. Thus, the aperture gauge 4 can move stably in the vertical direction, ensuring the uniformity of the detection process, and preventing the aperture gauge 4 from being skewed and causing damage to the aperture gauge 4.

[0030] Furthermore, the movable plate 31 is an L-shaped plate, the vertical section 311 of the L-shaped plate is fixedly connected to the slider 33 on one side facing the fixed plate 11, and a fixed block 34 is provided on the side facing away from the fixed plate 11; the connecting shaft 51 moves along the vertical direction to penetrate and extend to the horizontal section 312 of the movable plate 31 and the outer side of the fixed block 34; the connecting shaft 51 is provided with a boss 511 on one side close to the upper end of the horizontal section 312, and the connecting shaft 51 is sleeved with a buffer spring 52 at a position between the fixed block 34 and the boss 511. Among them, the fixed block 34 and the horizontal section 312 of the movable plate 31 form an axial sliding constraint on the connecting shaft 51, ensuring that the aperture gauge 4 moves along its axial direction, and the buffer spring 52 provides elastic buffering for the axial movement of the aperture gauge 4, reducing the hard contact between the end of the aperture gauge 4 and the workpiece, and preventing damage to the workpiece and the aperture gauge 4.

[0031] Furthermore, a photoelectric sensor 6 is provided on the fixing plate 11, and the photoelectric sensor 6 is provided on one side of the transmission assembly 3 through a connecting frame 61, and the photoelectric sensor 6 is a fiber optic sensor;

[0032] An end cap 53 is provided at the upper end of the connecting shaft 51. When the optical fiber sensor detects the upper flange of the end cap 53, it sends a signal indicating that the aperture detection is qualified. Otherwise, it sends a signal indicating that the aperture detection is unqualified.

[0033] Furthermore, the driving member 2 is a cylinder, which is installed on the upper part of the fixed plate 11 , and the end of its piston rod is fixedly connected to the top of the vertical section of the movable plate 31 through a connecting head 21 .

[0034] Furthermore, a stopper 7 is provided on the fixed plate 11, and the stopper 7 is provided on the other side of the transmission assembly 3 and close to the lowermost end of the fixed plate 11;

[0035] A limiting nut 71 is provided on the upper end of the movable plate 31 and on the side facing the limiting member 7. The limiting nut 71 can be adjusted in height relative to the movable plate 31 in the vertical direction. The limiting nut 71 cooperates with the limiting member 7 so that the device can detect holes of different depths. By adjusting the distance between the lower end of the limiting nut 71 and the upper end of the limiting member 7, the aperture gauge 4 of different length specifications can be used to improve the applicability of the aperture detection device. In addition, when the through gauge section 41 of the aperture gauge 4 passes through the hole of the workpiece, the end cap 53 at the upper end of the connecting shaft 51 is sensed by the photoelectric sensor 6, indicating that the aperture of the workpiece meets the standard, otherwise, it does not meet the standard.

[0036] Furthermore, the aperture gauge 4 is a hollow cylindrical structure, and the middle part of the connecting shaft 51 is provided with a mounting hole 512 adapted to the connecting section 43 of the aperture gauge 4, and a connecting hole 513 connected to the hollow cavity of the aperture gauge 4; the connecting hole 513 extends to the upper end of the boss 511. One side of the boss 511 is connected to a pneumatic connector 8, which is connected to an external gas supply device and is used to provide pressurized gas to the connecting hole 513 to blow away dust in the hole to be measured.

[0037] In summary, the aperture detection device provided by the utility model drives the movable plate to slide up and down by the cylinder, so that the movable plate drives the connecting shaft thereon to move up and down along its axial direction, and the connecting shaft then drives the aperture gauge to move up and down, realizing the lifting function of the aperture gauge. That is, when detecting the aperture, the cylinder first drives the aperture gauge to descend to the aperture of the workpiece, and after the aperture detection is completed, the aperture gauge is lifted. The photoelectric sensor cooperates with the end cover at the upper end of the connecting shaft. When the photoelectric sensor detects the end cover, it indicates that the through gauge section on the aperture gauge has entered the hole of the workpiece and the stop gauge section has not entered the hole of the workpiece, and a signal of qualified hole detection is given. In the two cases where the stop gauge section enters the hole of the workpiece or the through gauge section does not enter the hole of the workpiece, the photoelectric sensor cannot detect the end cover of the connecting shaft and sends a signal of unqualified hole. The aperture gauge is set with a hollow cylindrical structure and a gas with a certain pressure is passed, which can not only realize the detection of the hole of the workpiece but also purge the hole before detection to prevent the residual debris and impurities in the hole from affecting the detection results.

Claims

1. An aperture detection device, comprising a base (1), characterized in that: The base (1) is provided with a driving member (2), a transmission assembly (3) and an aperture gauge (4), wherein the driving member (2) is used to drive the transmission assembly (3) to drive the aperture gauge (4) to reciprocate up and down in a vertical direction; The aperture inspection gauge (4) comprises a through gauge section (41), a stop gauge section (42) and a connecting section (43) which are sequentially connected from bottom to top; The transmission assembly (3) comprises a movable plate (31) movably connected to the machine base (1); the aperture gauge (4) is arranged on the movable plate (31) via a gauge mounting member (5); the gauge mounting member (5) comprises a connecting shaft (51) arranged in a vertical direction and elastically connected to the movable plate (31); and the connecting section (43) of the aperture gauge (4) is detachably connected to the lower end of the connecting shaft (51).

2. The aperture detection device according to claim 1, characterized in that: The transmission assembly (3) is movably connected to the machine base (1) via a fixed plate (11), and the transmission assembly (3) further comprises a guide rail (32) and a slider (33), wherein the fixed plate (11) is fixedly connected to the machine base (1), the guide rail (32) is arranged on the fixed plate (11) in a vertical direction, the slider (33) is slidably connected to the guide rail (32), and the slider (33) is fixedly connected to the movable plate (31) on a side away from the guide rail (32).

3. The aperture detection device according to claim 2, characterized in that: The movable plate (31) is an L-shaped plate, the vertical section (311) of the L-shaped plate is fixedly connected to the slider (33) on one side facing the fixed plate (11), and a fixed block (34) is provided on the side facing away from the fixed plate (11); the connecting shaft (51) moves along the vertical direction to penetrate and extend to the horizontal section (312) of the movable plate (31) and the outer side of the fixed block (34); the connecting shaft (51) is provided with a boss (511) on one side close to the upper end of the horizontal section (312), and a buffer spring (52) is sleeved on the connecting shaft (51) at a position between the fixed block (34) and the boss (511).

4. The aperture detection device according to claim 3, characterized in that: A photoelectric sensor (6) is provided on the fixing plate (11), and the photoelectric sensor (6) is provided on one side of the transmission assembly (3) via a connecting frame (61), and the photoelectric sensor (6) is an optical fiber sensor; An end cap (53) is provided at the upper end of the connecting shaft (51). When the optical fiber sensor detects the upper flange of the end cap (53), it sends a signal indicating that the aperture detection is qualified; otherwise, it sends a signal indicating that the aperture detection is unqualified.

5. The aperture detection device according to claim 4, characterized in that: The driving member (2) is a cylinder, which is installed on the upper part of the fixed plate (11), and the end of its piston rod is fixedly connected to the top of the vertical section of the movable plate (31) through a connecting head (21).

6. The aperture detection device according to claim 5, characterized in that: A limiting member (7) is provided on the fixing plate (11), and the limiting member (7) is arranged on the other side of the transmission assembly (3) and close to the lowermost end of the fixing plate (11); A limiting nut (71) is provided at the upper end of the movable plate (31) and on a side facing the limiting member (7). The limiting nut (71) can be adjusted in height relative to the movable plate (31) in a vertical direction.

7. The aperture detection device according to claim 6, characterized in that: The aperture gauge (4) is a hollow cylindrical structure, and the middle part of the connecting shaft (51) is provided with a mounting hole (512) adapted to the connecting section (43) of the aperture gauge (4), and a connecting hole (513) connected to the hollow cavity of the aperture gauge (4). The connecting hole (513) extends to the upper end of the boss (511).

8. The aperture detection device according to claim 7, characterized in that: One side of the boss (511) is connected to a gas pressure joint (8), and the gas pressure joint (8) is connected to an external gas supply device and is used to provide pressurized gas to the connecting hole (513) to blow away dust in the hole to be tested.

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