A low-wear gear pitch measuring device

Abstract

The present invention relates to a low-wear gear pitch measuring device applied to the field of gear measurement. During detection, the gear to be detected is placed on a tray, and a quantitative hair dryer is started to blow air into the interior of the tooth groove. After the air enters the tooth groove, it is discharged through an air outlet slot. If the pitch between the two ends of the tooth groove is large, the amount of air discharged through the air outlet slot is large, otherwise the amount of air discharged is small. By reading the exhaust air volume according to an air flow sensor, the size of the tooth pitch of the tooth groove can be obtained. By moving the air outlet slot to different positions of the tooth groove, the tooth pitch at different positions of the tooth groove can be measured. Through the above-mentioned setting, the tooth pitch is measured in a non-contact manner, which can avoid the wear of the measuring equipment in the measurement of a large amount of data, improve the measurement accuracy of the measuring device, reduce the maintenance frequency, and thus improve the measurement efficiency. At the same time, it is avoided that the gear is scratched during the measurement process, and the safety of the gear measurement is improved.

Description

Technical Field

[0001] The invention relates to a gear pitch measuring device, in particular to a low-wear gear pitch measuring device applied to the field of gear measurement. Background Art

[0002] Gear tooth pitch refers to the length between two adjacent teeth and the tooth profile on the same side. Existing measuring equipment is mostly contact measurement. Since the tooth profile is irregular, when measuring the pitch at different positions, it is necessary to frequently contact the gear, resulting in serious wear of the measuring tool and affecting the measurement accuracy. Especially in the case of long-term and large-scale measurement work, the measuring equipment needs to be frequently maintained, which reduces the measurement efficiency. Summary of the invention

[0003] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when measuring the pitch of the gears at different positions, it is necessary to frequently contact the gears, which causes serious wear of the measuring tool and affects the measurement accuracy.

[0004] In order to solve the above problems, the present invention provides a low-wear gear pitch measuring device, including a detection box, an electric lifting rod is fixedly connected to the middle of the bottom end of the detection box, the telescopic end of the electric lifting rod is fixedly connected to an intermediate disk, the top of the intermediate disk is rotatably connected to a tray, the middle of the top of the tray is fixedly connected to a circular clamp, the side wall at one end of the detection box is fixedly connected to two electric pull rods symmetrically arranged with the circular clamp as the center point, the telescopic ends of the two electric pull rods are fixedly connected to connecting rods, one end of the two connecting rods is fixedly connected to an outer strip, an air pump is installed on the inner wall of the detection box near the bottom end of the electric lifting rod, and the bottom end of the detection box is fixedly connected to an equipment box The bottom end of the equipment box is fixedly connected with a quantitative hair dryer and is slidably connected with a telescopic adjustment rod, the telescopic end of the telescopic adjustment rod is fixedly connected with a blowing pipe, the output end of the quantitative hair dryer is fixedly connected with a main air duct, a connecting hose is fixedly connected between the main air duct and the bottom end of the blowing pipe, an air flow sensor is installed on the outer wall of the main air duct, a leak-proof air bag is fixedly connected to the outer wall of the top end of the blowing pipe, a soft air pipe is fixedly connected between the bottom end of the leak-proof air bag and the output end of the air pump, one end of the detection box is slidably connected with a mobile frame, the top of the mobile frame is slidably connected with an electric lifting frame, a hole pressing mechanism is installed inside the electric lifting frame, and an air outlet slot is arranged on the inner side of the hole pressing mechanism.

[0005] As a further improvement of the present application, the inner wall of the hole pressing mechanism is fixedly connected to two symmetrically arranged sliding rods, and two driving bars are slidably connected between the two sliding rods.

[0006] As a further improvement of the present application, the inner wall of the hole-pressing mechanism is rotatably connected to a bidirectional screw rod, which passes through two drive bars and is threadedly connected thereto, and the two drive bars are respectively located at the positive and negative wires of the bidirectional screw rod. One end of the electric lifting frame is fixedly connected to a motor, and the output end of the motor is fixedly connected to one end of the bidirectional screw rod.

[0007] As a further improvement of the present application, the ends of the two driving bars close to each other are fixedly connected with variable pitch bars, and an air outlet slot is set between the two variable pitch bars. Through the above setting, the thickness of the air outlet slot can be adjusted, and the measurement accuracy can be adjusted to apply to gears of different shapes.

[0008] As another improvement of the present application, the outer strip is made of elastic material, and the inner ring of the outer strip is fixedly connected with a sealing layer, which is made of rubber material. Through the above arrangement, the sealing effect between the outer strip and the gear can be improved to prevent gas leakage between the tooth grooves.

[0009] As another improved supplement of the present application, the bottom end of the outer ring of the tray is fixedly connected to a circular rack, the bottom end of the outer ring of the middle disk is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a driving gear, and the driving gear is meshed with the circular rack.

[0010] As another improved supplement of the present application, the top of the blowing pipe and the center point of the tray are on the same plane and the plane is a vertical plane, and the vertical plane formed by the top of the blowing pipe and the center point of the tray is perpendicular to the air outlet slot.

[0011] To summarize, during testing, the gear to be tested is placed on a tray, and a quantitative hair dryer is started to blow air into the tooth slot. The wind enters the tooth slot and is discharged through the air outlet slot. If the pitch between the two ends of the tooth slot is large, more air is discharged through the air outlet slot, otherwise, less air is discharged. By reading the exhaust air volume based on the air flow sensor, the size of the tooth pitch of the tooth slot can be obtained. By moving the air outlet slot to different positions of the tooth slot, the tooth pitch at different positions of the tooth slot can be measured. Through the above settings, the tooth pitch is measured in a non-contact manner, which can avoid wear of the measuring equipment during large amounts of data measurement, improve the measurement accuracy of the measuring device, reduce the maintenance frequency, and thereby improve the measurement efficiency. At the same time, scratches on the gear during the measurement process are avoided, thereby improving the safety of gear measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front cross-sectional view of the detection box and the equipment box in the first and second embodiments of the present application;

[0013] Figure 2 This is a front view of the middle disk in the first embodiment of the present application;

[0014] Figure 3This is a three-dimensional diagram of the outer strip wrapping the gear in the first and second embodiments of the present application;

[0015] Figure 4 A top view of the hole pressing mechanism in the second embodiment of the present application;

[0016] Figure 5 This is a state diagram when the air outlet slot is located on the upper side of the tooth slot in the first and second embodiments of the present application;

[0017] Figure 6 This is a state diagram when the air outlet slot is located at the lower side of the tooth slot in the first and second embodiments of the present application;

[0018] Figure 7 This is a state diagram when the leak-proof airbag is located inside the tooth socket in the first and second embodiments of the present application.

[0019] Description of the numbers in the figure:

[0020] 1. Detection box; 2. Electric lifting rod; 3. Middle plate; 4. Tray; 5. Servo motor; 6. Driving gear; 7. Round rack; 8. Circular fixture; 9. Equipment box; 10. Electric pull rod; 11. Connecting rod; 12. Outer strip; 1201. Sealing layer; 13. Quantitative hair dryer; 14. Telescopic adjustment rod; 15. Air pump; 16. Blowing pipe; 17. Connecting hose; 18. Leak-proof air bag; 19. Soft air pipe; 20. Mobile frame; 21. Electric lifting frame; 22. Hole pressing mechanism; 2201. Sliding rod; 2202. Driving strip; 2203. Bidirectional screw rod; 2204. Motor; 2205. Pitch-changing strip; 23. Air outlet slot; 24. Air flow sensor; 25. Main air duct. DETAILED DESCRIPTION

[0021] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0022] The first implementation method:

[0023] Figure 1-3 and Figure 5-7A low-wear gear pitch measuring device is shown, comprising a detection box 1, an electric lifting rod 2 is fixedly connected to the middle of the bottom end of the detection box 1, an intermediate disk 3 is fixedly connected to the telescopic end of the electric lifting rod 2, a tray 4 is rotatably connected to the top of the intermediate disk 3, a circular clamp 8 is fixedly connected to the middle of the top of the tray 4, two electric pull rods 10 symmetrically arranged with the circular clamp 8 as the center point are fixedly connected to the side wall at one end of the detection box 1, the telescopic ends of the two electric pull rods 10 are fixedly connected to a connecting rod 11, an outer strip 12 is fixedly connected between one ends of the two connecting rods 11, an air pump 15 is installed on the inner wall of the detection box 1 near the bottom end of the electric lifting rod 2, the bottom end of the detection box 1 is fixedly connected to an equipment box 9, and the bottom end of the equipment box 9 is fixedly connected to a quantitative blower The machine 13 is slidably connected with a telescopic adjustment rod 14, the telescopic end of the telescopic adjustment rod 14 is fixedly connected with a blowing pipe 16, the output end of the quantitative hair dryer 13 is fixedly connected with a main air duct 25, a connecting hose 17 is fixedly connected between the main air duct 25 and the bottom end of the blowing pipe 16, an air flow sensor 24 is installed on the outer wall of the main air duct 25, a leak-proof air bag 18 is fixedly connected to the outer wall of the top end of the blowing pipe 16, a soft air pipe 19 is fixedly connected between the bottom end of the leak-proof air bag 18 and the output end of the air pump 15, one end of the detection box 1 is slidably connected with a moving frame 20, the top of the moving frame 20 is slidably connected with an electric lifting frame 21, a hole pressing mechanism 22 is installed inside the electric lifting frame 21, and an air outlet slot 23 is arranged on the inner side of the hole pressing mechanism 22.

[0024] During the inspection, the gear to be inspected is placed on the tray 4, and the circular clamp 8 is used to clamp the gear. The tray 4 is rotated so that one of the tooth grooves of the gear is perpendicular to the hole pressing mechanism 22, and the tooth groove is the tooth groove to be inspected. The electric lifting rod 2 is started to drive the gear to move upward until the top surface of the gear is flush with the top surface of the outer strip 12. The two electric pull rods 10 are started to contract and the outer strip 12 is pulled to fit the gear through the connecting rod 11. The telescopic adjustment rod 14 is moved to drive the top end of the blowing pipe 16 to be located at the lower side of the tooth groove to be inspected. The telescopic adjustment rod 14 is started to drive the top end of the blowing pipe 16 to move to the inner side of the tooth groove to be inspected, and the electric lifting rod 2 is started to drive the gear to move upward until the top surface of the gear is flush with the top surface of the outer strip 12. The air pump 15 inflates the leak-proof airbag 18 so that the leak-proof airbag 18 blocks the lower end of the tooth groove to be detected. The electric lifting frame 21 drives the air outlet slot 23 to move to the upper side of the tooth groove to be detected, and the quantitative blower 13 is started to blow air into the tooth groove. After the wind enters the tooth groove, it is discharged through the air outlet slot 23. If the tooth pitch between the two ends of the tooth groove is large, the amount of air discharged through the air outlet slot 23 is large, otherwise the amount of air discharged is small. According to the exhaust air volume read by the wind flow sensor 24, the size of the tooth pitch of the tooth groove can be obtained. By moving the air outlet slot 23 to different positions of the tooth groove, the tooth pitch at different positions of the tooth groove can be measured.

[0025] Through the above-mentioned setting, the tooth pitch is measured in a non-contact manner, which can avoid wear of the measuring equipment during large-scale data measurement, improve the measurement accuracy of the measuring device, reduce the maintenance frequency, and thus improve the measurement efficiency. At the same time, it avoids scratches on the gear during the measurement process, thereby improving the safety of gear measurement.

[0026] The second implementation method:

[0027] Figure 1 and Figure 3-7 A low-wear gear pitch measuring device is shown, which is different from the first embodiment in that the inner wall of the hole pressing mechanism 22 is fixedly connected to two symmetrically arranged sliding rods 2201, and two driving bars 2202 are slidably connected between the two sliding rods 2201. The inner wall of the hole pressing mechanism 22 is rotatably connected to a bidirectional screw rod 2203, which passes through the two driving bars 2202 and is threadedly connected thereto, and the two driving bars 2202 are respectively located at the positive and negative wires of the bidirectional screw rod 2203, one end of the electric lifting frame 21 is fixedly connected to a motor 2204, the output end of the motor 2204 is fixedly connected to one end of the bidirectional screw rod 2203, and the ends of the two driving bars 2202 close to each other are fixedly connected to a pitch variable bar 2205, and an air outlet slot 23 is arranged between the two pitch variable bars 2205.

[0028] When the motor 2204 is started to rotate forward or reverse, the two variable pitch bars 2205 can be driven to move closer or farther from each other through the bidirectional lead screw 2203, thereby adjusting the thickness of the air outlet slot 23 and adjusting the measurement accuracy to be applied to gears of different shapes.

[0029] The outer strip 12 is made of elastic material, and the inner ring of the outer strip 12 is fixedly connected with a sealing layer 1201, which is made of rubber material. Through the above arrangement, the sealing effect between the outer strip 12 and the gear can be improved to prevent gas leakage between the tooth grooves.

[0030] The bottom end of the outer ring of the tray 4 is fixedly connected with a circular rack 7, the bottom end of the outer ring of the middle disk 3 is fixedly connected with a servo motor 5, the output end of the servo motor 5 is fixedly connected with a driving gear 6, the driving gear 6 is meshed with the circular rack 7, when the tray 4 is rotated, the servo motor 5 can be started to drive the tray 4 to rotate through the driving gear 6 and the circular rack 7.

[0031] The top of the blowing pipe 16 and the center point of the tray 4 are on the same plane and the plane is a vertical plane. The vertical plane formed by the top of the blowing pipe 16 and the center point of the tray 4 is perpendicular to the air outlet slot 23 .

[0032] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A low-wear gear pitch measuring device, comprising a detection box (1), characterized in that: The middle part of the bottom end of the detection box (1) is fixedly connected to an electric lifting rod (2), the telescopic end of the electric lifting rod (2) is fixedly connected to an intermediate disk (3), the top end of the intermediate disk (3) is rotatably connected to a tray (4), the middle part of the top end of the tray (4) is fixedly connected to a circular clamp (8), the side wall at one end of the detection box (1) is fixedly connected to two electric pull rods (10) symmetrically arranged with the circular clamp (8) as the center point, the telescopic ends of the two electric pull rods (10) are fixedly connected to a connecting rod (11), and one end of the two connecting rods (11) is fixedly connected to an outer strip (12), an air pump (15) is installed on the inner wall of the detection box (1) near the bottom end of the electric lifting rod (2), the bottom end of the detection box (1) is fixedly connected to an equipment box (9), the bottom end of the equipment box (9) is fixedly connected to a quantitative hair dryer (13) and is slidably connected to a telescopic adjustment device (12). A section rod (14), the telescopic end of the telescopic adjustment rod (14) is fixedly connected to a blow pipe (16), the output end of the quantitative blower (13) is fixedly connected to a main air pipe (25), a connecting hose (17) is fixedly connected between the main air pipe (25) and the bottom end of the blow pipe (16), an air flow sensor (24) is installed on the outer wall of the main air pipe (25), a leak-proof air bag (18) is fixedly connected to the outer wall of the top end of the blow pipe (16), a soft air pipe (19) is fixedly connected between the bottom end of the leak-proof air bag (18) and the output end of the air pump (15), one end of the detection box (1) is slidably connected to a movable frame (20), the top end of the movable frame (20) is slidably connected to an electric lifting frame (21), a hole pressing mechanism (22) is installed inside the electric lifting frame (21), and an air outlet slot (23) is arranged on the inner side of the hole pressing mechanism (22).

2. A low-wear gear pitch measuring device according to claim 1, characterized in that: The inner wall of the hole pressing mechanism (22) is fixedly connected to two symmetrically arranged sliding bars (2201), and two driving bars (2202) are slidably connected between the two sliding bars (2201).

3. A low-wear gear pitch measuring device according to claim 2, characterized in that: The inner wall of the hole pressing mechanism (22) is rotatably connected to a bidirectional screw rod (2203), the bidirectional screw rod (2203) passes through two drive bars (2202) and is threadedly connected thereto, and the two drive bars (2202) are respectively located at the positive thread and the negative thread of the bidirectional screw rod (2203), one end of the electric lifting frame (21) is fixedly connected to a motor (2204), and the output end of the motor (2204) is fixedly connected to one end of the bidirectional screw rod (2203).

4. A low-wear gear pitch measuring device according to claim 3, characterized in that: One end of the two driving bars (2202) that is close to each other is fixedly connected to a variable pitch bar (2205), and an air outlet slot (23) is arranged between the two variable pitch bars (2205).

5. The low-wear gear pitch measuring device according to claim 1, characterized in that: The outer strip (12) is made of an elastic material, the inner ring of the outer strip (12) is fixedly connected with a sealing layer (1201), and the sealing layer (1201) is made of a rubber material.

6. The low-wear gear pitch measuring device according to claim 1, characterized in that: The bottom end of the outer ring of the tray (4) is fixedly connected to a round rack (7), the bottom end of the outer ring of the intermediate disk (3) is fixedly connected to a servo motor (5), the output end of the servo motor (5) is fixedly connected to a driving gear (6), and the driving gear (6) is meshed with the round rack (7).

7. The low-wear gear pitch measuring device according to claim 1, characterized in that: The top end of the blowing pipe (16) and the center point of the tray (4) are on the same plane and the plane is a vertical plane. The vertical plane formed by the top end of the blowing pipe (16) and the center point of the tray (4) is perpendicular to the air outlet slot (23).

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