Device for measuring gluing area of tooth profile curve, spiral line and surface of gear

Abstract

The utility model discloses a device for measuring a tooth profile curve, a spiral line and a surface gluing area of a gear, and relates to the technical field of gear measurement. The device for measuring the tooth profile curve and / or the spiral line of the gear comprises a measuring frame (2), a probe (7) is arranged on the measuring frame (2), a rotary table (4) is arranged on one side of the probe (7), and a measured gear (9) is installed on the rotary table (4); wherein the rotary table (4) is used for driving the measured gear (9) to rotate, and the measuring pin (7) is used for measuring a gear tooth profile curve and / or a spiral line corresponding to the measured gear (9). The problems that an existing measurement method is low in precision, difficult to judge, poor in repeatability, long in measurement period and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear measurement, in particular to a device for measuring a gear tooth profile curve, a spiral line and a surface bonding area. Background Art

[0002] The bonding area of ​​the tooth surface is an important indicator for determining whether the gear has failed due to bonding. Accurately and quickly measuring the bonding area of ​​the tooth surface is very necessary to understand the bonding condition of the tooth surface and determine the failure of gear tooth bonding.

[0003] At present, there are four main methods for detecting the bonding area of ​​gears, namely visual inspection, photographic method, roughness measurement method and ferrography method. However, each of these methods has different problems. Among them, the visual inspection method is to observe the changes in the tooth surface morphology with the naked eye after each level of loading and operation. This method is simple and can accurately determine the bonding failure level, but the visual inspection method cannot accurately determine the bonding area. Among them, the photographic method can accurately depict the tooth surface morphology and record it. If the bonding slowly increases, it is difficult to accurately determine. Among them, the roughness measurement method requires the test gear to be removed, cleaned, and kept at a constant temperature, and then the tooth surface roughness is measured on a special instrument. However, the measurement results vary greatly due to different instruments and measuring points. Among them, the ferrography method analyzes the abrasive particles in the lubricating oil and uses the wear severity index to reflect the changes in the wear type. There are more large abrasive particles produced by bonding and the wear rate is higher. The bonding failure level can also be determined by observing the abrasive particle morphology, but this method has a long measurement cycle.

[0004] In terms of application, the above measurement methods have problems such as low accuracy, difficult judgment, poor repeatability and long measurement cycle. Utility Model Content

[0005] In view of this, the utility model provides a technical solution for a device for measuring a gear tooth profile curve and / or a helix line and a surface bonding area.

[0006] In a first aspect, the utility model provides a measuring device for a gear tooth profile curve and / or a helix, comprising: a measuring frame, a measuring needle is arranged on the measuring frame, a turntable is arranged on one side of the measuring needle, and a gear to be measured is installed on the turntable;

[0007] The turntable is used to drive the gear to be measured to rotate, and the measuring needle is used to measure the gear tooth profile curve and / or helix corresponding to the gear to be measured.

[0008] Preferably, the measuring frame comprises: a measuring frame body, a first slide rail in the Z direction is arranged on one side of the measuring frame body, and the first slide rail in the Z direction is slidably connected to the measuring needle.

[0009] Preferably, the measuring needle is mounted on one end of a measuring arm, and the other end of the measuring arm is connected to the measuring frame or a measuring frame body of the measuring frame or a first slide rail of the measuring frame in the Z direction.

[0010] Preferably, an X-direction slide rail is provided on the lower side of the measuring frame body, and the measuring frame body is slidably connected to the X-direction slide rail.

[0011] Preferably, a turntable base is provided on one side of the turntable, a Y-direction slide rail is provided on the lower side of the turntable base, and the turntable base is slidably connected to the Y-direction slide rail.

[0012] Preferably, a first fixing mechanism for fixing one side of the gear to be measured is provided on the other side of the turntable, and a second fixing mechanism for fixing the gear to be measured is provided on the other side of the gear to be measured.

[0013] Preferably, the first fixing mechanism is configured as a lower center point on the other side of the turntable, and the second fixing mechanism is configured as an upper center point.

[0014] Preferably, the measuring device further comprises: a support frame, a fixing frame is provided on one side of the support frame, and a second fixing mechanism for fixing the other side of the gear to be measured is provided on the fixing frame.

[0015] Preferably, the support frame comprises: a support frame body, the support frame body is provided with a second slide rail in the Z direction, and the second slide rail in the Z direction is slidably connected to a fixed bracket provided on one side of the support frame.

[0016] Preferably, a side of the fixed bracket arranged on one side of the support frame is also provided with a slide rail sleeve connected to the second slide rail in the Z direction.

[0017] In a second aspect, the utility model provides a device for measuring the bonding area of ​​a tooth surface, comprising: a device for measuring a gear tooth profile curve and / or a helix as described above; and,

[0018] Controller;

[0019] Wherein, the controller is used to calculate the tooth surface bonding area corresponding to the measured gear based on the gear tooth profile curve and the helix.

[0020] Preferably, the controller comprises: a memory and a processor connected to the memory;

[0021] The memory is used to store the preset formula corresponding to the tooth surface bonding area and the gear parameters corresponding to the gear being tested;

[0022] The processor is used to calculate the tooth surface bonding area corresponding to the measured gear based on the gear tooth profile curve, the helix, the preset formula and the gear parameters.

[0023] Preferably, the device for measuring the bonding area of ​​the tooth surface further comprises: a human-computer interaction unit;

[0024] Among them, the human-computer interaction unit is used to input one or more of the gear tooth profile curve, the helix, the preset formula and the gear parameters and / or display the gear tooth profile curve, the helix and the tooth surface bonding area.

[0025] Preferably, the human-computer interaction unit comprises: an input mechanism and / or a display mechanism;

[0026] Wherein, the input mechanism is used to input one or more of the gear tooth profile curve, the helix, the preset formula and the gear parameters;

[0027] Wherein, the display mechanism is used to display the gear tooth profile curve, the helix and the tooth surface bonding area.

[0028] Preferably, the gear parameters include: number of teeth z, module m n , pressure angle α, helix angle β, tooth width b and tooth tip diameter d a and tooth root diameter d f One or more of.

[0029] The utility model has at least the following beneficial effects:

[0030] The utility model provides a technical solution for a measuring device of a gear tooth profile curve and / or spiral line and a surface bonding area, so as to solve the problems of low precision, difficult judgment, poor repeatability and long measuring cycle existing in the existing measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0032] Figure 1 It is a schematic diagram of a measuring device for a gear tooth profile curve, a spiral line, and a surface bonding area according to an embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the internal structure of the controller of an embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram corresponding to the human-computer interaction unit of an embodiment of the utility model;

[0035] Figure 4 It is the tooth profile curve corresponding to the eight gear tooth pairs in the gear under test in the embodiment of the utility model;

[0036] Figure 5 It is the helical curve corresponding to the eight gear tooth pairs in the measured gear in the embodiment of the utility model. DETAILED DESCRIPTION

[0037] The present invention is described below based on embodiments, but it is worth noting that the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present invention.

[0038] In addition, those skilled in the art should understand that the drawings are only provided to illustrate the purpose, features and advantages of the present invention, and the drawings are not actually drawn according to scale.

[0039] At the same time, unless the context clearly requires otherwise, the words "include", "comprises" and similar words throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0040] Figure 1 This is a schematic diagram of a measuring device for a gear tooth profile curve, helix line, and surface bonding area according to an embodiment of the utility model. Figure 1 As shown, the measuring device for the gear tooth profile curve and / or helix comprises: a measuring frame 2, on which a measuring needle 7 is arranged, a turntable 4 is arranged on one side of the measuring needle 7, and a measured gear 9 is installed on the turntable 4; wherein, the turntable 4 is used to drive the measured gear 9 to rotate, and the measuring needle 7 is used to measure the gear tooth profile curve and / or helix corresponding to the measured gear 9.

[0041] In the embodiment of the present disclosure and other possible embodiments, the gear 9 to be measured is fixed. Before measurement, the measuring needle 7 is away from the gear 9 to be measured and is in a safe area; during measurement, first, the measuring needle 7 moves along the Y direction to the tooth groove of the gear 9 to be measured, and the height of the measuring needle 7 in the Z direction is configured as a set height, for example, the set height is configured as b / 2, and b is the tooth width; secondly, the turntable 4 drives the gear 9 to be measured to rotate, so that the measuring needle 7 contacts the left and right tooth surfaces of the gear 9 to be measured, and thereby determines the actual spatial position of the gear 9 to be measured in the circumferential direction.

[0042] In the embodiment of the present disclosure and other possible embodiments, further, based on the actual spatial position of the measured gear 9 in the circumferential direction, the measuring needle 7 will perform a tooth profile scan on the measured gear 9 according to the set gear model path; wherein the starting point of the scan is the root circle diameter d f , the scanning end point is the tooth tip diameter d a , scan along the Y direction to obtain the tooth profile curve of the gear being measured. The entire measurement process is a contact measurement. When the stylus 7 scans the tooth surface along the Y direction, the tooth profile curve in the bonding area will fluctuate, and the tooth profile curve in the non-bonding area will be a smooth straight line. This can determine whether the tooth surface is bonded, and then determine the maximum diameter d1 and the minimum diameter d2 in the Y direction corresponding to the diameter value of the tooth profile curve in the bonding area of ​​the tooth surface.

[0043] In the embodiment of the present disclosure and other possible embodiments, after the measuring needle 7 scans the tooth profile curve, it scans the spiral curve, and the scanning starting point is the upper end surface of the measured gear 9, and the ending point is the lower end surface of the measured gear 9. The measuring needle 7 scans the spiral curve at the diameter d3 along the Z direction, wherein d3=(d1+d2) / 2; when the measuring needle 7 scans the tooth surface along the Z direction, the spiral curve of the bonding area will fluctuate, while the spiral curve of the unbonded area will not fluctuate, thereby determining the length h of the bonding area of ​​the tooth surface in the Z direction.

[0044] In the embodiment of the present disclosure, a turntable base 11 is provided on one side of the turntable 4, a Y-direction slide rail 10 is provided on the lower side of the turntable base 11, and the turntable base 11 is slidably connected to the Y-direction slide rail 10. At the same time, an X-direction slide rail 12 is provided on the lower side of the measuring frame body 21, and the measuring frame body 21 is slidably connected to the X-direction slide rail 12.

[0045] In the embodiment of the present disclosure and other possible embodiments, before measurement, the measuring needle 7 is moved away from the measured gear 9 by using the X-direction slide rail 12 and the Y-direction slide rail 10 to be in a safe area.

[0046] In the embodiment of the present disclosure, the measuring frame 2 includes: a measuring frame body 21, a first slide rail in the Z direction is provided on one side of the measuring frame body 21, and the first slide rail in the Z direction is slidably connected to the measuring needle 7. At the same time, the measuring frame 2 includes: a measuring frame body 21, a first slide rail in the Z direction is provided on one side of the measuring frame body 21, and the first slide rail in the Z direction is slidably connected to the measuring needle 7.

[0047] In the embodiments of the present disclosure and other possible embodiments, during measurement, first, the measuring needle 7 is moved close to the measured gear 9 by using the X-direction slide rail 12, and the measuring needle 7 is moved along the Y-direction to the tooth groove of the measured gear 9 by using the first Z-direction slide rail. The height of the measuring needle 7 in the Z-direction is configured to be a set height, for example, the set height is configured to be b / 2, where b is the tooth width; secondly, the turntable 4 drives the measured gear 9 to rotate, so that the measuring needle 7 contacts the left and right tooth surfaces of the measured gear 9, and thereby determines the actual spatial position of the measured gear 9 in the circumferential direction.

[0048] In the embodiment of the present disclosure, the measuring needle 7 is installed at one end of a measuring arm 8, and the other end of the measuring arm 8 is connected to the measuring frame 2 or the measuring frame body 21 of the measuring frame 2 or the first slide rail of the measuring frame 2 in the Z direction.

[0049] In the embodiment of the present disclosure and other possible embodiments, before measurement, the measuring needle 7 configured on the measuring arm 8 is moved away from the measured gear 9 by using the X-direction slide rail 12 and the Y-direction slide rail 10 to be in a safe area.

[0050] In the embodiments of the present disclosure and other possible embodiments, during measurement, first, the measuring needle 7 configured with the measuring arm 8 is moved close to the measured gear 9 by using the X-direction slide rail 12, and the measuring needle 7 configured with the measuring arm 8 is moved along the Y-direction to the tooth groove of the measured gear 9 by using the first Z-direction slide rail. The height of the measuring needle 7 configured with the measuring arm 8 in the Z-direction is configured to be a set height, for example, the set height is configured to be b / 2, where b is the tooth width; secondly, the turntable 4 drives the measured gear 9 to rotate, so that the measuring needle 7 configured with the measuring arm 8 contacts the left and right tooth surfaces of the measured gear 9, and thereby determines the actual spatial position of the measured gear 9 in the circumferential direction.

[0051] In the embodiment of the present disclosure, a first fixing mechanism for fixing one side of the measured gear 9 is provided on the other side of the turntable 4, and a second fixing mechanism for fixing the measured gear 9 is provided on the other side of the measured gear 9. The first fixing mechanism is configured as a lower center 5 on the other side of the turntable 4, and the second fixing mechanism is configured as an upper center 6.

[0052] In an embodiment of the present disclosure, the measuring device further includes: a support frame 3, a fixing frame 13 is provided on one side of the support frame 3, and a second fixing mechanism for fixing the other side of the measured gear 9 is provided on the fixing frame 13.

[0053] In the embodiment of the present disclosure, the support frame 3 includes: a support frame body 31, a second slide rail 32 in the Z direction is provided on the support frame body 31, and the second slide rail 32 in the Z direction is slidably connected to a fixed bracket 13 provided on one side of the support frame 3. A slide rail sleeve 14 connected to the second slide rail 32 in the Z direction is also provided on one side of the fixed bracket 13 provided on one side of the support frame 3.

[0054] In the embodiment of the present disclosure and other possible embodiments, before measurement, the first fixing mechanism (lower center 5) and the second fixing mechanism (upper center 6) are respectively used to fix the gear 9 to be measured. Specifically, the position of the first fixing mechanism (lower center 5) is adjusted by using the Y-direction slide rail 10, so that the first fixing mechanism (lower center 5) is fixed to the other side of the gear 9 to be measured; then, the position of the fixing bracket 13 in the Z direction is adjusted by using the slide rail sleeve 14 and the second Z-direction slide rail 32, so that the second fixing mechanism (upper center 6) is fixed to the other side of the gear 9 to be measured.

[0055] In the embodiment of the present disclosure and other possible embodiments, it also includes: an instrument base 1, on the upper side of which are respectively provided with a Y-direction slide rail 10, an X-direction slide rail 12, and a support frame 3; a turntable base 11 is provided on the Y-direction slide rail 10, and the turntable 4 is provided on the turntable base 11; and the measuring frame 2 is provided on the X-direction slide rail 12.

[0056] In addition, an embodiment of the present disclosure also proposes a device for measuring the surface bonding area, including: a device for measuring the gear tooth profile curve and / or helix as described above; and a controller 15; wherein the controller 15 is used to calculate the tooth surface bonding area corresponding to the measured gear 9 based on the gear tooth profile curve and helix.

[0057] Figure 2 Schematic diagram of the internal structure of the controller of the present utility model embodiment. Figure 2 As shown, the controller 15 includes: a memory 151 and a processor 152 connected to the memory 151; the memory 151 is used to store the preset formula corresponding to the tooth surface bonding area and the gear parameters corresponding to the measured gear 9; the processor 152 is used to calculate the tooth surface bonding area corresponding to the measured gear 9 based on the gear tooth profile curve, the helix, the preset formula and the gear parameters.

[0058] In the embodiments of the present disclosure and other possible embodiments, the controller 15 may be configured as one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), single-chip microcomputers, microcontrollers, microprocessors, electronic devices, terminal devices or other electronic components.

[0059] In the embodiments of the present disclosure and other possible embodiments, the terminal device may be a user equipment (UE), a mobile device, a user terminal, a terminal, a cellular phone, a cordless phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, a terminal computer, etc.

[0060] In the embodiments of the present disclosure and other possible embodiments, the memory 151 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or optical disk.

[0061] Figure 3 Schematic diagram of the structure of the human-computer interaction unit of the embodiment of the utility model. Figure 3 As shown, the measuring device also includes: a human-computer interaction unit 16; wherein the human-computer interaction unit 16 is used to input the gear tooth profile curve, the helix, the preset formula and one or more of the gear parameters and / or display the gear tooth profile curve, the helix and the tooth surface bonding area.

[0062] In an embodiment of the present disclosure, the human-computer interaction unit 16 includes: an input mechanism 161 and / or a display mechanism 162; wherein the input mechanism 161 is used to input one or more of the gear tooth profile curve, the helix, the preset formula and the gear parameters; wherein the display mechanism 162 is used to display the gear tooth profile curve, the helix and the tooth surface bonding area.

[0063] In the embodiment of the present disclosure and other possible embodiments, the input mechanism 161 may be configured as a keyboard, a click wheel, a button, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0064] In the embodiments of the present disclosure and other possible embodiments, the display mechanism 162 may be configured as a screen; in some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0065] In the embodiment of the present disclosure, the gear parameters include: number of teeth z, module m n , pressure angle α, helix angle β, tooth width b and tooth tip diameter d a and tooth root diameter d f One or more of.

[0066] Figure 4 It is the tooth profile curve corresponding to the eight gear tooth pairs in the gear under test in the embodiment of the utility model; Figure 5 It is the helical curve corresponding to the eight gear tooth pairs in the gear under test in the embodiment of the utility model. Figure 4-5 As shown, the whole measurement process is a contact measurement. When the stylus 7 scans the tooth surface along the Y direction, the tooth profile curve of the bonding area will fluctuate, and the tooth profile curve of the non-bonded area is a smooth straight line. Therefore, it can be determined whether the tooth surface is bonded, and then the maximum diameter d1 and the minimum diameter d2 of the diameter value corresponding to the tooth profile curve of the bonding area of ​​the tooth surface in the Y direction are determined. Among them, 11.00 is the diameter value close to the tooth root, and 38.38 is the diameter value close to the tooth top. After the stylus 7 scans the tooth profile curve, it scans the spiral curve immediately. The scanning starting point is the upper end face of the measured gear 9, and the end point is the lower end face of the measured gear 9. The stylus 7 scans the spiral curve at the diameter d3 along the Z direction, where d3 = (d1 + d2) / 2; when the stylus 7 scans the tooth surface along the Z direction, the spiral curve of the bonding area will fluctuate, while the spiral curve of the non-bonded area will not fluctuate, thereby determining the length h of the bonding area of ​​the tooth surface in the Z direction. Among them, 7.95 is close to the upper end, -17.40 is close to the lower end, and - represents 0 o'clock.

[0067] In the embodiment of the present disclosure and other possible embodiments, the preset formula is configured as the tooth surface bonding area Where r0 is the base circle radius and β is the helix angle. n ×z×cosα) / 2cosβ, number of teeth z, module m n , pressure angle α.

[0068] The measurement principle disclosed herein is as follows: when a gear measuring center is used to detect the tooth profile and helix of a gear, the measured tooth profile curve and helix curve will fluctuate on the bonded tooth surface; the radial length of the bonded tooth surface can be determined by the fluctuation position of the tooth profile curve, and the axial length of the bonded tooth surface can be determined by the fluctuation position of the helix curve; the area of ​​the bonded tooth surface can be obtained by using the tooth surface calculation formula (the preset formula).

[0069] In summary, the beneficial effects of the present invention are as follows: (1) High measurement accuracy. The error of the gear measurement center is 2 microns, and the stylus can detect even the slightest change on the tooth surface. (2) Good repeatability. At the same position on the tooth surface, whether it is repeated measurement of the tooth profile curve or the helical curve, the measurement value error is within 1 micron. (3) Short measurement cycle. The present invention only takes 20 minutes from fixing the gear to detecting the curve and finally calculating the bonding area.

[0070] The above-mentioned embodiments are only embodiments of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, without departing from the concept of the present invention, several variations, equivalent substitutions, improvements, etc. can be made, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A device for measuring a gear tooth profile curve and / or a helix, characterized in that: include: A measuring frame (2), wherein a measuring needle (7) is arranged on the measuring frame (2), a turntable (4) is arranged on one side of the measuring needle (7), and a gear (9) to be measured is mounted on the turntable (4); the measuring needle (7) is mounted on one end of a measuring arm (8), and the other end of the measuring arm (8) is connected to the measuring frame (2) or a measuring frame body (21) of the measuring frame (2) or a first slide rail of the measuring frame (2) in the Z direction; The turntable (4) is used to drive the gear (9) to be measured to rotate, and the measuring needle (7) is used to measure the gear tooth profile curve and / or helix corresponding to the gear (9) to be measured.

2. The measuring device according to claim 1, characterized in that The measuring frame (2) comprises: a measuring frame body (21); a first slide rail in the Z direction is provided on one side of the measuring frame body (21); the first slide rail in the Z direction is slidably connected to the measuring needle (7).

3. The measuring device according to any one of claims 1 to 2, characterized in that: An X-direction slide rail (12) is provided on the lower side of a measuring frame body (21) of the measuring frame (2), and the measuring frame body (21) is slidably connected to the X-direction slide rail (12).

4. The measuring device according to any one of claims 1 to 2, characterized in that: A turntable base (11) is provided on one side of the turntable (4), a Y-direction slide rail (10) is provided on the lower side of the turntable base (11), and the turntable base (11) is slidably connected to the Y-direction slide rail (10).

5. The measuring device according to claim 3, characterized in that A turntable base (11) is provided on one side of the turntable (4), a Y-direction slide rail (10) is provided on the lower side of the turntable base (11), and the turntable base (11) is slidably connected to the Y-direction slide rail (10).

6. The measuring device according to any one of claims 1, 2 and 5, characterized in that: A first fixing mechanism for fixing one side of the measured gear (9) is provided on the other side of the turntable (4), and a second fixing mechanism for fixing the measured gear (9) is provided on the other side of the measured gear (9).

7. The measuring device according to claim 3, characterized in that A first fixing mechanism for fixing one side of the measured gear (9) is provided on the other side of the turntable (4), and a second fixing mechanism for fixing the measured gear (9) is provided on the other side of the measured gear (9).

8. The measuring device according to claim 4, characterized in that A first fixing mechanism for fixing one side of the measured gear (9) is provided on the other side of the turntable (4), and a second fixing mechanism for fixing the measured gear (9) is provided on the other side of the measured gear (9).

9. The measuring device according to claim 6, characterized in that The first fixing mechanism is configured as a lower center point (5) on the other side of the turntable (4), and the second fixing mechanism is configured as an upper center point (6).

10. The measuring device according to claim 7 or 8, characterized in that The first fixing mechanism is configured as a lower center point (5) on the other side of the turntable (4), and the second fixing mechanism is configured as an upper center point (6).

11. The measuring device according to any one of claims 1, 2, 5, 7 and 8, characterized in that: Also includes: A support frame (3), wherein a fixing frame (13) is provided on one side of the support frame (3), and a second fixing mechanism for fixing the other side of the gear (9) to be measured is provided on the fixing frame (13).

12. The measuring device according to claim 3, characterized in that Also includes: A support frame (3), wherein a fixing frame (13) is provided on one side of the support frame (3), and a second fixing mechanism for fixing the other side of the gear (9) to be measured is provided on the fixing frame (13).

13. The measuring device according to claim 4, characterized in that Also includes: A support frame (3), wherein a fixing frame (13) is provided on one side of the support frame (3), and a second fixing mechanism for fixing the other side of the gear (9) to be measured is provided on the fixing frame (13).

14. The measuring device according to claim 6, characterized in that Also includes: A support frame (3), wherein a fixing frame (13) is provided on one side of the support frame (3), and a second fixing mechanism for fixing the other side of the gear (9) to be measured is provided on the fixing frame (13).

15. The measuring device according to claim 10, characterized in that Also includes: A support frame (3), wherein a fixing frame (13) is provided on one side of the support frame (3), and a second fixing mechanism for fixing the other side of the gear (9) to be measured is provided on the fixing frame (13).

16. The measuring device according to claim 11, characterized in that The support frame (3) comprises: a support frame body (31), a second slide rail (32) in the Z direction being arranged on the support frame body (31), and the second slide rail (32) in the Z direction being slidably connected to a fixed support (13) arranged on one side of the support frame (3).

17. The measuring device according to any one of claims 12 to 15, characterized in that: The support frame (3) comprises: a support frame body (31), a second slide rail (32) in the Z direction being arranged on the support frame body (31), and the second slide rail (32) in the Z direction being slidably connected to a fixed support (13) arranged on one side of the support frame (3).

18. The measuring device according to claim 11, characterized in that A slide rail sleeve (14) connected to a second slide rail (32) in the Z direction provided on the support frame body (31) is also provided on one side of the fixed bracket (13) provided on one side of the support frame (3).

19. The measuring device according to any one of claims 12 to 16, characterized in that: A slide rail sleeve (14) connected to a second slide rail (32) in the Z direction provided on the support frame body (31) is also provided on one side of the fixed bracket (13) provided on one side of the support frame (3).

20. The measuring device according to claim 17, characterized in that A slide rail sleeve (14) connected to the second slide rail (32) in the Z direction is also provided on one side of the fixed bracket (13) provided on one side of the support frame (3).

21. A device for measuring the bonding area of ​​a tooth surface, characterized in that: include: A device for measuring a gear tooth profile curve and / or helix as claimed in any one of claims 1 to 20; and, Controller (15); The controller (15) is used to calculate the tooth surface bonding area corresponding to the measured gear (9) based on the gear tooth profile curve and the helix.

22. The measuring device according to claim 21, characterized in that The controller (15) comprises: a memory (151) and a processor (152) connected to the memory (151); The memory (151) is used to store a preset formula corresponding to the tooth surface bonding area and gear parameters corresponding to the measured gear (9); The processor (152) is used to calculate the tooth surface bonding area corresponding to the measured gear (9) based on the gear tooth profile curve, the helix, the preset formula and the gear parameters.

23. The measuring device according to claim 21 or 22, characterized in that Also includes: Human-Computer Interaction Unit (16); The human-machine interaction unit (16) is used to input one or more of the gear tooth profile curve, the helix, the preset formula and the gear parameters and / or to display the gear tooth profile curve, the helix and the tooth surface bonding area.

24. The measuring device according to claim 23, characterized in that The human-computer interaction unit (16) comprises: an input mechanism (161) and / or a display mechanism (162); Wherein, the input mechanism (161) is used to input one or more of the gear tooth profile curve, the helix, the preset formula and the gear parameters; Wherein, the display mechanism (162) is used to display the gear tooth profile curve, the helix and the tooth surface bonding area.

25. The measuring device according to claim 22 or 24, characterized in that The gear parameters include: number of teeth z , modulus m n , pressure angle α , Helix Angle β , Tooth width b and tip diameter d a and root diameter d f One or more of.

26. The measuring device according to claim 23, characterized in that The gear parameters include: number of teeth z , modulus m n , pressure angle α , Helix Angle β , Tooth width b and tip diameter d a and root diameter d f One or more of.

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