Precision gear deformation detection device

Abstract

The invention discloses a precision gear deformation detection device applied to the technical field of gear detection, and the device can carry out the initial trial measurement of a gear through a measuring head, and can inform whether the collision phenomenon possibly occurs or not through the observation of the retraction condition of the measuring head in the process of measuring the gear. According to the gear precision detection device and the gear precision detection method, the working personnel is reminded to change the measurement parameters in time, the probability that the measuring head is broken under the condition that programming or setting is wrong is greatly reduced, so that the cost caused by wrong operation when the gear precision is detected is reduced, in addition, the bending degree of the measuring head can be detected to a certain degree in cooperation with components such as a detection rod, and the detection accuracy is improved. When the measuring head is bent, a worker can be visually reminded to correct or replace the measuring head in time by utilizing the color change, and the situation that the measuring precision of the measuring needle is reduced due to the fact that the measuring head is bent after multiple times of trial measurement is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of gear detection, and in particular to a precision gear deformation detection device. Background Art

[0002] The development of gear measurement technology has a history of nearly a hundred years. Corresponding to the gear accuracy standards, modern gear measurement technology can be summarized into the following five types: 1. Gear single geometric shape error measurement technology; 2. Gear comprehensive error measurement technology; 3. Gear overall error measurement technology; 4. Gear on-machine measurement technology; 5. Gear laser measurement technology.

[0003] In the existing gear deformation detection, it is generally necessary to use a three-dimensional measuring machine to detect it. When the three-dimensional measuring machine detects the gear, it is first necessary to set the measured gear parameters through programming. Once the setting is incorrect, it will directly lead to the pin collision phenomenon, causing certain property losses. How to avoid the breakage of the probe in the case of incorrect setting has become a key issue in reducing the cost when detecting gear accuracy.

[0004] Therefore, the applicant proposes a precision gear deformation detection device. Summary of the invention

[0005] The purpose of the present application is to solve the problem that once the programming is set incorrectly, it will directly lead to the pin collision phenomenon and cause certain property losses. Compared with the prior art, a precision gear deformation detection device is provided, including an outer cylinder, a probe is inserted into the outer cylinder, a limit plate is fixedly connected to the probe, a movable locking block is slidably connected inside the outer cylinder, a cone block is fixedly connected to the probe, a groove matching the cone block is bored on the movable locking block, a through hole connected to the groove is bored on the movable locking block, a flexible capsule is fixedly connected to the through hole of the movable locking block, a plurality of separation membranes are fixedly connected inside the flexible capsule, and the movable locking block is located at the separation membrane. An annular cavity is bored around the diaphragm, a plurality of exhaust grooves connecting the annular cavity and the flexible bag are bored inside the movable locking block, a switch cavity connected to the annular cavity is bored inside the movable locking block, a movable plug is slidably connected inside the switch cavity, a switch button is installed on the inner wall of the switch cavity, an electromagnet electrically connected to the switch button is fixedly connected to the upper side wall of the movable locking block, a reset spring is fixedly connected between the electromagnet and the outer cylinder, a pull tube is fixedly connected between the movable locking block and the cone block, so that initial trial measurement can be carried out and timely adjustment can be made after the needle is struck, thereby effectively reducing the measurement cost caused by programming errors.

[0006] Optionally, a through hole matching the probe is bored at the upper end of the outer cylinder, an extrusion bag is fixedly connected to the inner wall of the through hole of the outer cylinder, two sliding grooves connected to the extrusion bag are bored on the inner wall of the outer cylinder, pistons are slidingly connected inside the two sliding grooves, and a thrust spring is fixedly connected between the piston and the sliding groove, which can reduce the clamping force on the probe to avoid breakage of the probe during trial measurement, and increase the clamping force on the probe during formal measurement, thereby improving the measurement accuracy of the probe to a certain extent.

[0007] Optionally, liquid cavities are excavated on the left and right inner walls of the movable locking block, and the liquid cavity is connected to the cone block through a pull tube. A sealing plug is slidably connected to the inside of the liquid cavity, an elastic rope is fixedly connected between the sealing plug and the liquid cavity, and a detection rod connected to the liquid cavity is fixedly connected to the sealing plug, which can achieve the effect of detecting the curvature of the probe.

[0008] Optionally, a glass liquid cylinder is fixedly connected to the inside of the detection rod, the inside of the glass liquid cylinder is filled with color developing liquid, the liquid cavity and the cone block are filled with prompt water, and the outer cylinder and the cone block are made of transparent material. When the bending of the probe is detected, it can serve as a reminder to the staff, prompting the staff to replace the probe in time.

[0009] Optionally, the extrusion bag is made of rubber material, which can increase the friction between the extrusion bag and the probe and prevent the probe from sliding during measurement.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] (1) This solution can use the probe to conduct an initial test measurement of the gear. During the gear measurement process, by observing the retraction of the probe, it can be informed whether a needle collision may occur. This can remind the staff to change the measurement parameters in time, greatly reducing the probability of the probe breaking due to incorrect programming or settings, thereby reducing the cost caused by incorrect operations when detecting gear accuracy. In addition, in conjunction with detection rods and other components, it can achieve a certain degree of detection of the bending of the probe. When the probe is bent, the color change can be used to visually remind the staff to correct or replace the probe in time, avoiding the reduction of the measurement accuracy of the probe due to the bending of the probe itself after multiple test measurements.

[0012] (2) A probe is inserted into the outer cylinder, a limit plate is fixedly connected to the probe, a movable locking block is slidably connected inside the outer cylinder, a cone block is fixedly connected to the probe, a groove matching the cone block is bored on the movable locking block, a through hole connected to the groove is bored on the movable locking block, a flexible bag is fixedly connected to the through hole of the movable locking block, a plurality of partition membranes are fixedly connected inside the flexible bag, an annular cavity is bored around the partition membrane of the movable locking block, a plurality of exhaust grooves connected between the annular cavity and the flexible bag are bored inside the movable locking block, a switch cavity connected to the annular cavity is bored inside the movable locking block, a movable plug is slidably connected inside the switch cavity, a switch button is installed on the inner wall of the switch cavity, an electromagnet electrically connected to the switch button is fixedly connected to the upper side wall of the movable locking block, a reset spring is fixedly connected between the electromagnet and the outer cylinder, a pull tube is fixedly connected between the movable locking block and the cone block, the initial trial measurement can be carried out, and adjustments can be made in time after the needle is struck, effectively reducing the measurement cost caused by programming errors.

[0013] (3) Liquid cavities are excavated on the left and right inner walls of the movable locking block, and the liquid cavity is connected to the cone block through a pull tube. A sealing plug is slidably connected inside the liquid cavity, and an elastic rope is fixedly connected between the sealing plug and the liquid cavity. A detection rod connected to the liquid cavity is fixedly connected to the sealing plug, which can achieve the effect of detecting the curvature of the probe.

[0014] (4) A glass liquid cylinder is fixedly connected to the inside of the detection rod, and the inside of the glass liquid cylinder is filled with a color developing liquid. The liquid cavity and the cone block are filled with warning water. The outer cylinder and the cone block are made of transparent materials. When the bending of the probe is detected, it can serve as a reminder to the staff, prompting the staff to replace the probe in time.

[0015] (5) The extrusion bag is made of rubber material, which can increase the friction between the extrusion bag and the probe and prevent the probe from slipping during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional image of the probe of this application;

[0017] Figure 2 This is a front cross-sectional view of the outer cylinder of this application;

[0018] Figure 3 This is a schematic diagram of the structure of the mobile lock block of this application;

[0019] Figure 4 This is a top view of the cross-section of the movable locking block of this application;

[0020] Figure 5 This is a schematic diagram of the structure of the extrusion bag part of the present application;

[0021] Figure 6 This is a state diagram of the mobile lock block and the cone block when they are combined in this application;

[0022] Figure 7 This is a state diagram of the probe retracted in this application;

[0023] Figure 8 This is a schematic diagram of the internal structure of the detection stick of this application;

[0024] Fig. 9 This is a flow chart of the application method.

[0025] Description of the numbers in the figure:

[0026] 1 outer cylinder, 11 measuring head, 12 limit plate, 2 movable locking block, 21 cone block, 211 pull tube, 22 flexible capsule, 23 partition membrane, 24 annular cavity, 25 switch cavity, 26 movable plug, 27 switch button, 3 electromagnet, 4 return spring, 5 squeeze capsule, 51 slide groove, 52 piston, 53 thrust spring, 6 liquid cavity, 61 sealing plug, 62 detection rod, 621 glass liquid cylinder. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0028] The first implementation method:

[0029] This application discloses a precision gear deformation detection device, see Figure 1-5 The outer cylinder 1 is plugged with a probe 11, and a limit plate 12 is fixedly connected to the probe 11. A movable locking block 2 is slidably connected inside the outer cylinder 1. A cone block 21 is fixedly connected to the probe 11. A groove matching the cone block 21 is bored on the movable locking block 2. A through hole connected to the groove is bored on the movable locking block 2. A flexible capsule 22 is fixedly connected to the through hole of the movable locking block 2. A plurality of separation membranes 23 are fixedly connected inside the flexible capsule 22. An annular cavity 24 is bored around the separation membrane 23 of the movable locking block 2. A plurality of exhaust grooves are formed inside the locking block 2 and connected to the annular cavity 24 and the flexible bag 22; a switch cavity 25 connected to the annular cavity 24 is formed inside the movable locking block 2; a movable plug 26 is slidably connected inside the switch cavity 25; a switch button 27 is installed on the inner wall of the switch cavity 25; an electromagnet 3 electrically connected to the switch button 27 is fixedly connected to the upper side wall of the movable locking block 2; a return spring 4 is fixedly connected between the electromagnet 3 and the outer tube 1; a pull tube 211 is fixedly connected between the movable locking block 2 and the cone block 21.

[0030] See also Fig. 9 , including the following steps:

[0031] S1. Use cleaning equipment to clean and process the burrs and impurities on the gear surface to make the surface flat and smooth;

[0032] S2. Clean the measuring table of the three-dimensional coordinate measuring machine to ensure that there are no foreign objects on the measuring table. Select a fixture that is suitable for the size of the gear and install it on the measuring table of the three-dimensional coordinate measuring machine. Then clamp and fix the gear.

[0033] S3, using the outer cylinder 1 on the three-dimensional coordinate measuring machine, setting the measurement parameters through the control software, such as the number of measurement points, scanning speed and the inflection point of the outer cylinder 1, and after the settings are completed, performing the initial test measurement;

[0034] S4. After the measurement is completed, observe whether the outer cylinder 1 on the three-dimensional coordinate measuring machine retracts. If not, the electromagnet can be started and the measurement is performed again. If yes, it is necessary to reset the measurement points at the position of the gear where the outer cylinder 1 retracts.

[0035] When inspecting the gear, first, after setting the measurement parameters of the three-dimensional measuring machine, the staff starts to carry out the initial measurement of the gear. During this process, the electromagnet 3 is in an unpowered state, and the scanning speed of the outer cylinder 1 will be slowed down. When the needle striker phenomenon occurs, the outer cylinder 1 will first bend, causing the outer cylinder 1 to squeeze the flexible capsule 22. After the flexible capsule 22 is squeezed, the gas inside it will be transmitted to the switch chamber 25 through the annular cavity 24, and the air pressure will be used to push the moving plug 26 upward, thereby opening the switch of the electromagnet 3, so that the electromagnet 3 moves upward rapidly under the action of the magnetic force of the piston 52, and pulls the cone block 21 and the probe 11 upward through the pull tube 211. At the same time, the piston 52 moves downward under the action of the magnetic force, so that the gas inside the squeezing capsule 5 is transported to the inside of the slide groove 51, thereby losing the clamping force on the probe 11, which is beneficial to the movement of the probe 11.

[0036] See also Figure 6 After the staff finds that the probe 11 retracts, it is necessary to set and improve the position of the gear when the probe 11 retracts. After the setting is completed, the above operation is performed again until there is no needle strike. The staff can start the electromagnet 3 and change the magnetic pole direction of the electromagnet 3 so that the electromagnet 3 is repelled by the piston 52 and moves downward, so that the cone block 21 is inserted into the movable lock block 2. Figure 7 As shown, the detection accuracy of the probe 11 is improved.

[0037] The second implementation method:

[0038] See also Figure 7-8Compared with the first embodiment, the present embodiment mainly adds a detection rod 62 and other components, which can achieve a certain degree of detection of the curvature of the probe 11, and avoid reducing the measurement accuracy of the probe after multiple test measurements. The specific implementation is as follows:

[0039] A through hole matching the probe 11 is drilled at the upper end of the outer cylinder 1, and an extrusion capsule 5 is fixedly connected to the inner wall of the through hole of the outer cylinder 1. Two slide grooves 51 are drilled on the upper inner wall of the outer cylinder 1, both of which are connected to the extrusion capsule 5. Pistons 52 are slidably connected inside the two slide grooves 51, and a thrust spring 53 is fixedly connected between the piston 52 and the slide groove 51. Liquid chambers 6 are drilled on the left and right inner walls of the movable locking block 2, and the liquid chamber 6 is connected to the cone block 21 through a pull tube 211. A sealing plug 61 is slidably connected inside the liquid chamber 6, and an elastic rope is fixedly connected between the sealing plug 61 and the liquid chamber 6. A detection rod 62 connected to the liquid chamber 6 is fixedly connected to the sealing plug 61, and a glass liquid cylinder 621 is fixedly connected to the detection rod 62. The glass liquid cylinder 621 is filled with color developing liquid, and the liquid chamber 6 and the cone block 21 are both filled with prompt water. The outer cylinder 1 and the cone block 21 are made of transparent material, and the extrusion capsule 5 is made of rubber material.

[0040] When the probe 11 is in use and there is no bending, the downward movement of the movable locking block 2 will cause the cone block 21 to passively enter the slot of the movable locking block 2, and the inclined surface of the cone block 21 will be used to push the glass liquid cylinder 621 to retract. When the probe 11 is bent, one of the detection rods 62 will directly contact the top of the cone block 21 and will be unable to retract, causing the glass liquid cylinder 621 inside the detection rod 62 to break, and causing the color developing liquid inside the glass liquid cylinder 621 to spread to the cone block 21 through the pull tube 211. The staff can understand that the probe 11 may be bent by observing the color changes of the pull tube 211 and the cone block 21, and correct or replace it in time to prevent the bent probe 11 from affecting the measurement results of the gear.

[0041] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precision gear deformation detection device, characterized in that: The outer cylinder (1) is plugged with a probe (11), the probe (11) is fixedly connected to a limit plate (12), the outer cylinder (1) is slidably connected to a movable locking block (2), the probe (11) is fixedly connected to a cone block (21), the movable locking block (2) is provided with a slot matching the cone block (21), the movable locking block (2) is provided with a through hole connected to the slot, the through hole of the movable locking block (2) is fixedly connected to a flexible bag (22), the inside of the flexible bag (22) is provided with a flexible bag (22) and a ...1) and a through hole connected to the slot is provided on the movable locking block (2). A plurality of partition membranes (23) are fixedly connected, the movable locking block (2) is provided with an annular cavity (24) around the partition membrane (23), a plurality of exhaust grooves are provided inside the movable locking block (2) and are connected to the annular cavity (24) and the flexible bag (22), a switch cavity (25) connected to the annular cavity (24) is provided inside the movable locking block (2), a movable plug (26) is slidably connected inside the switch cavity (25), and a switch button (27) is installed on the inner wall of the switch cavity (25).

2. A precision gear deformation detection device according to claim 1, characterized in that: An electromagnet (3) electrically connected to a switch button (27) is fixedly connected to the upper side wall of the movable locking block (2); a return spring (4) is fixedly connected between the electromagnet (3) and the outer tube (1); and a pull tube (211) is fixedly connected between the movable locking block (2) and the cone block (21).

3. A precision gear deformation detection device according to claim 2, characterized in that: A through hole matching the measuring head (11) is bored at the upper end of the outer cylinder (1); an extrusion bag (5) is fixedly connected to the inner wall of the through hole of the outer cylinder (1); and two slide grooves (51) both connected to the extrusion bag (5) are bored on the upper inner wall of the outer cylinder (1).

4. A precision gear deformation detection device according to claim 3, characterized in that: A piston (52) is slidably connected inside the two slide grooves (51), and a thrust spring (53) is fixedly connected between the piston (52) and the slide groove (51).

5. A precision gear deformation detection device according to claim 2, characterized in that: The left and right inner walls of the movable locking block (2) are both provided with liquid cavities (6), and the liquid cavity (6) is connected to the cone block (21) via a pull tube (211).

6. A precision gear deformation detection device according to claim 5, characterized in that: A sealing plug (61) is slidably connected inside the liquid cavity (6), an elastic rope is fixedly connected between the sealing plug (61) and the liquid cavity (6), and a detection rod (62) connected to the liquid cavity (6) is fixedly connected to the sealing plug (61).

7. A precision gear deformation detection device according to claim 6, characterized in that: A glass liquid cylinder (621) is fixedly connected to the interior of the detection rod (62), the interior of the glass liquid cylinder (621) is filled with a color developing liquid, and the interiors of the liquid cavity (6) and the cone block (21) are both filled with prompt water.

8. The precision gear deformation detection device according to claim 1, characterized in that: The outer cylinder (1) and the cone block (21) are both made of transparent material.

9. A precision gear deformation detection device according to claim 3, characterized in that: The extrusion bag (5) is made of rubber material.

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