Gear measuring instrument

Abstract

The utility model provides a gear measuring instrument, including the runout instrument body and locating lever, the number of locating lever is two and is symmetrically installed on the two sides of runout instrument body, the middle of runout instrument body is equipped with the lift portion, lift portion includes power subassembly and support subassembly, the power subassembly includes hydraulic cylinder, the support subassembly includes the hydraulic cylinder, the hydraulic cylinder is equipped with the support subassembly, and the support subassembly is equipped with the support subassembly. And a gear loading assembly is mounted at the top of the rotating frame. According to the gear measuring instrument, the gear bucket serves as a container of the gear, the pushing assembly pushes the side clamping plates to fix the gear, manual gear holding is replaced, the stability of the gear when the gear is installed on the run-out instrument is improved, the supporting assembly is lifted through the power assembly in the lifting part, and compared with manual installation, the gear measuring instrument is more stable; lifting is stopped after the circle center positioning ring makes contact with the positioning rod, at the moment, the circle center of the gear and the circle center of the positioning rod are in a concentric state, the concentricity of the gear installed on the run-out instrument is improved, and the gear detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear detection technical field, especially a kind of gear measuring instrument. BACKGROUND

[0002] Gear run-out detector is a kind of precision instrument specially used for detecting gear run-out error.Gear run-out error refers to the maximum variation of the measuring head relative to the gear axis within the range of one rotation of the gear, with the measuring head contacting both sides of the gear midsection in the gear slot or on the gear tooth.The radial run-out and cylindricity of the main shaft of the run-out detector are crucial to the concentricity of the installed gear.If the main shaft has a large radial run-out, for example, exceeding ±0.003mm, the installed gear on the main shaft will inevitably have a concentricity deviation, which will affect the detection result. SUMMARY

[0003] The utility model aims at providing a kind of gear measuring instrument, the instrument can improve the concentricity of the installed gear when gear run-out is measured.

[0004] The utility model provides a kind of gear measuring instrument, including run-out detector body and positioning rod, the positioning rod has two and is symmetrically installed on the two sides of run-out detector body, the middle of run-out detector body is equipped with lifting portion, the lifting portion includes power component and support component, the power component includes hydraulic cylinder, the support component includes two cross swing connections rotation frame, the hydraulic cylinder promotes rotation frame movement, the top of rotation frame is equipped with gear loading assembly, the gear loading assembly includes the gear bucket of containing gear and side clamping plate, the two sides of gear bucket are equipped with the pusher assembly for pushing side clamping plate fixed gear, the top center of side clamping plate is equipped with the center of circle positioning ring synchronous with the center of positioning rod circle, the lifting portion is contacted with positioning rod after lifting gear loading assembly.

[0005] As a further optimization scheme, the power component includes base, the both ends of base are equipped with hydraulic cylinder, the output end of hydraulic cylinder is movably installed with connecting frame.

[0006] As a further optimization scheme, the support component includes two rotation frames, two rotation frames are cross swing connections, the bottom of rotation frame is movably installed with roller, the roller is located in the inside of base, the connecting frame is connected with the bottom of rotation frame, the top of rotation frame is installed with mounting bracket, the middle of mounting bracket is movably installed with rotating roller with rotation shaft.

[0007] As a further optimization scheme, the gear loading assembly comprises a gear hopper, two ends of the gear hopper are connected with the base through a limiting assembly, the bottom of the gear hopper is located on the rotating roller, and grooves are formed in the two sides and the bottom center of the inside of the gear hopper; the side clamping plates are arranged on the two sides of the gear hopper, and the outer wall of the side clamping plate is provided with a sliding block corresponding to the groove; the sliding block is slidably clamped in the groove; and a pressure sensor is arranged on the inside bottom of the center positioning ring.

[0008] As a further optimization scheme, the pushing assembly is arranged on the two sides of the side clamping plate and comprises a frame and a screw cylinder; the two ends of the frame are connected with the outer wall of the gear hopper; the middle of the frame is provided with a bottom frame and the screw cylinder; the two ends of the bottom frame are connected with the frame and are provided with a servo motor; the output end of the servo motor is provided with a screw rod; the outer wall of the screw cylinder is provided with a sliding port on the two sides; the screw cylinder is located in the middle of the frame, and the frame at this position is slidably connected with the sliding port; and the screw rod is threadedly connected with the screw cylinder.

[0009] As a further optimization scheme, the limiting assembly comprises a support plate and a limiting ring; one end of the support plate is arranged on the base; the other end of the support plate is provided with a limiting rod; the limiting ring is arranged on the gear hopper; and the limiting rod penetrates into the inside of the limiting ring.

[0010] As a further optimization scheme, the outer wall surface of the gear hopper is sprayed with polyurethane paint.

[0011] As a further optimization scheme, the positions of the sliding blocks and the grooves are distributed in a triangular shape.

[0012] As a further optimization scheme, the connecting assembly comprises two sliding rods, the sliding rods are arranged on the side surfaces of the intersection of the two rotating frames, the outer wall of the sliding rod is slidably sleeved with a sliding frame, and the outer wall of the sliding rod is provided with a baffle.

[0013] As a further optimization scheme, the two servo motors are connected in series.

[0014] Compared with the prior art, the gear measuring instrument has the following improvements and advantages: the gear measuring instrument uses the gear hopper as a container for the gear, the pushing assembly pushes the side clamping plate to fix the gear, replaces the manually held gear, increases the stability of the gear when the gear is installed on the run-out instrument, the lifting of the supporting assembly by the power assembly in the lifting part is more stable than manual installation, the lifting is stopped after the center positioning ring contacts the positioning rod, at this time, the center of the gear and the positioning rod are in the concentric state, the concentricity of the gear when the gear is installed on the run-out instrument is increased, and the precision of gear detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 The structure diagram of the present application installed on the jump instrument is shown in the figure.

[0017] Figure 2 The structure diagram of the present application is shown in the figure.

[0018] Figure 3 The structure diagram of the present application is shown in the figure. Figure 2 The enlarged structure diagram of the present application at A (lifting part) is shown in the figure.

[0019] Figure 4 The enlarged structure diagram of the present application at B (pushing assembly) is shown in the figure. Figure 2 The enlarged structure diagram of the present application at C (connecting assembly) is shown in the figure.

[0020] Figure 5 The enlarged structure diagram of the present application at C (connecting assembly) is shown in the figure. Figure 3 The enlarged structure diagram of the present application at C (connecting assembly) is shown in the figure.

[0021] Explanation of reference signs:

[0022] 1-jump instrument body, 2-positioning rod, 3-gear loading assembly, 31-gear hopper, 32-side clamping plate, 33-sliding block, 34-center positioning ring, 35-pressure sensor, 36-sliding groove, 4-pushing assembly, 41-servo motor, 42-frame, 43-chassis, 44-screw, 45-sliding port, 46-screw cylinder, 5-lifting part, 51-power assembly, 51a-base, 51b-connecting frame, 51c-hydraulic cylinder, 52-supporting assembly, 52a-mounting frame, 52b-roller, 52c-rotating shaft, 52d-rotating frame, 52e-roller, 6-limiting assembly, 61-branch plate, 62-limiting rod, 63-limiting ring, 7-connecting assembly, 71-sliding rod, 72-sliding frame, 73-baffle. Specific embodiments

[0023] The technical solutions of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] In the description of the utility model, it is understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, "a plurality of" means two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figures 1-5 The utility model provides a kind of technical scheme of gear measuring instrument, including run-out instrument body 1 and positioning rod 2, run-out instrument body 1 is the instrument for measuring gear radial run-out and end face run-out, positioning rod 2 has two and is symmetrically installed on the two sides of run-out instrument body 1, positioning rod 2 is the rotation reference axis in rotating workbench, for after installing gear and rotating, please refer to Figure 1 The installation position of positioning rod 2 on run-out instrument body 1 in the middle of run-out instrument body 1 is provided with lifting portion 5, lifting portion 5 is used to lift gear to lift, and gear is lifted to positioning rod 2 and is fixedly installed, lifting portion 5 includes power component 51 and support component 52, power component 51 provides power for lifting portion 5, and support component 52 is lifted after being pushed by power component 51, power component 51 includes hydraulic cylinder 51c, and hydraulic cylinder 51c is the source of power generation, support component 52 includes two cross movable connections rotating frame 52d, rotating frame 52d is cross set, when being pushed at bottom, make top cross lifting action, hydraulic cylinder 51c pushes rotating frame 52d to move, and the top of rotating frame 52d is provided with gear loading assembly 3, loading assembly 3 is used to place gear, loading assembly 3 is lifted along with lifting portion 5, please refer toFigure 2 The state of the two, the gear is lifted to move to the positioning rod 2 ready for installation, the gear loading assembly 3 includes the gear bucket 31 containing the gear and the side clamping plate 32, the gear bucket 31 is a container containing the gear, the two sides of the gear bucket 31 are provided with a pushing assembly 4 for pushing the side clamping plate 32 to fix the gear, the two pushing assemblies 4 push the two side clamping plates 32 to move to clamp the gear, the top center of the side clamping plate 32 is provided with a center positioning ring 34 synchronous with the center of the positioning rod 2, the center positioning ring 34 is consistent with the center of the positioning rod 2, and the position of the center positioning ring 34 is also consistent with the center of the gear, as shown in Figure 1 It can be seen that the center positioning ring 34 is in contact with the positioning rod 2 when the center of the gear is consistent with the center of the positioning rod 2, and the lifting part 5 lifts the gear loading assembly 3 to contact the positioning rod 2.

[0027] After the gear is placed in the inside of the gear bucket 31, it is preliminarily placed, and under the pushing of the pushing assembly 4, the two side clamping plates 32 are moved to clamp and fix the gear, and then the power assembly 51 in the lifting part 5 pushes the rotating frame 52d in the supporting assembly 52 to rotate and rise, and then the gear bucket 31 is lifted to the position of the positioning rod 2, and under the feature that the center of the center positioning ring 34 is consistent with the positioning rod 2, the lifting position makes the center of the gear consistent with the center of the positioning rod 2, so as to improve the concentricity of the gear installed on the gear runout instrument.

[0028] In use, only the gear is placed in the inside of the gear bucket 31, and then the gear is fixed under the pushing of the pushing assembly 4, and then the power assembly 51 pushes the supporting assembly 52 to push the gear bucket 31 to the positioning rod 2, so that the position of the gear is consistent with the positioning rod 2 to ensure the concentricity.

[0029] As shown in Figure 2 The power assembly 51 includes a base 51a, the base 51a is the basis of the power assembly 51, the two ends of the base 51a are provided with a hydraulic cylinder 51c, the extension and retraction of the hydraulic cylinder 51c provides power for the lifting of the supporting assembly 52, the connecting frame 51b is connected with the rotating frame 52d, and the power of the hydraulic cylinder 51c is transmitted to the rotating frame 52d, and the output end of the hydraulic cylinder 51c is movably provided with the connecting frame 51b.

[0030] Referring to Figure 3 The horizontal hydraulic cylinder 51c is adopted to replace the longitudinal space with the horizontal space to avoid insufficient space, and the two hydraulic cylinders 51c are symmetrically arranged on the two sides to provide power in two directions and increase the stability of controlling the lifting of the supporting assembly 52.

[0031] Combined with Figure 2 and Figure 3As shown, the support assembly 52 includes two rotating frames 52d, which are cross-connected by the connecting assembly 7. The cross-connection at the bottom of the two rotating frames 52d produces intersecting rotation when pulled, and the movement directions of the upper and lower parts are opposite. When the bottom is laterally retracted, the top is also opened. The longitudinal state of the rotating frame 52d is lifted during folding and unfolding. The bottom of the rotating frame 52d movably mounts a roller 52e, which is arranged inside the base 51a when the rotating frame 52d moves. The connecting frame 51b is connected to the bottom of the rotating frame 52d. The top of the rotating frame 52d mounts a mounting frame 52a, which movably mounts a rotating roller 52b through a rotating shaft 52c in the middle.

[0032] After the bottom of the rotating frame 52d is pushed, the top of the rotating frame 52d rotates around the connecting assembly 7 as the rotating point. Under the effect of rotation, the top produces a height difference action, driving the rotating roller 52b to lift the gear bucket 31. Due to the rotating characteristics of the rotating shaft 53c, the rotating roller 52b reduces friction and increases smoothness when lifting the gear bucket 31. When the rotating frame 52d rotates, the roller 52e at the bottom slides inside the base 51a.

[0033] Reference Figure 2 The gear loading assembly 3 includes a gear bucket 31, which is a container for loading gears. The two ends of the gear bucket 31 are connected to the base 51a through the limiting assembly 6, which makes the lifting process of the gear bucket 31 more stable. The bottom of the gear bucket 31 rests on the rotating roller 52b. The inside of the gear bucket 31 has a sliding groove 36 on both sides and at the center. The side clamping plate 32 moves, driving the sliding block 33 to slide inside the sliding groove 36, ensuring that the movement of the side clamping plate 32 is more stable. The side clamping plate 32 has two and is arranged on both sides of the gear bucket 31. The outer wall of the side clamping plate 32 is provided with a sliding block 33 at the corresponding position of the sliding groove 36. The sliding block 33 is clamped inside the sliding groove 36. The inside bottom of the center positioning ring 34 is provided with a pressure sensor 35. After the center positioning ring 34 contacts the positioning rod 2, the pressure sensor 35 controls the power supply of the servo motor 41 through the relay switch.

[0034] In the state that the gear bucket 31 is filled with gears and is pushed by the pushing assembly 4, the side clamping plate 32 clamps the gears inside the gear bucket 31. The sliding of the sliding block 33 inside the sliding groove 36 increases the stability of the movement of the side clamping plate 32. After the gear bucket 31 is lifted, the center positioning ring 34 contacts the positioning rod 2. The gears are concentric with the center of the center positioning ring 34 and the positioning rod 2. After the gear bucket 31 stops moving, the position of the gears is in the concentric position with the positioning rod 2.

[0035] In combination Figure 2 and Figure 4The pushing assembly 4 has two sides of the side clamping plates 32 and includes a frame 42 and a screw cylinder 46, the frame 42 is the basic framework of the pushing assembly 4, the two ends of the frame 42 are connected with the outer side wall of the gear wheel bucket 31, the middle of the frame 42 is provided with a chassis 43 and the penetrating cylinder 46, the chassis 43 is used for loading the servo motor 41, the two ends of the chassis 43 are connected with the frame 42 and are provided with the servo motor 41, the servo motor 41 is the power source of the pushing assembly 4, the outer wall of the output end of the servo motor 41 is provided with a screw rod 44, the screw rod 44 rotates and spirally rotates in the inside of the screw cylinder 46, because the screw cylinder 46 is in a non-fixed state, due to the characteristics of the screw rotation, the screw rod 44 makes the screw cylinder 46 displace, the outer wall of the screw cylinder 46 is provided with a sliding port 45 on both sides, the screw cylinder 46 is located in the middle of the frame 42, and the frame 42 at this position is slidably connected with the sliding groove of the sliding port 45, when the screw cylinder 46 moves, the sliding port 45 slides on the outer wall of the frame 42, the rotation ability of the screw cylinder 46 is limited, and only the horizontal movement ability is reserved, so as to ensure that the screw cylinder 46 can displace in the pushing state when the screw rod 44 rotates, and the screw rod 44 is threadedly connected with the screw cylinder 46.

[0036] When the servo motor 41 is powered, the screw rod 44 rotates to drive the screw cylinder 46 to generate a pushing action, and the sliding port 45 slides on the outer wall of the frame 42, the screw cylinder 46 displaces to push the side clamping plates 32, and the side clamping plates 32 on both sides clamp the gear wheels to fix the gear wheels in the inside of the gear wheel bucket 31.

[0037] In order to increase the stability of the gear loading assembly in lifting, the limiting assembly 6 includes a support plate 61 and a limiting ring 63, one end of the support plate 61 is installed on the base 51a, the other end of the support plate 61 is installed with a limiting rod 62, and the limiting ring 63 is installed on the gear wheel bucket 31, when the gear wheel bucket 31 moves up and down, the limiting ring 63 slides on the outer wall of the limiting rod 62 to limit in a vertical straight line, the support plate 61 is a medium for connecting the limiting rod 62 with the base 51a, and the limiting rod 62 penetrates into the inside of the limiting ring 63.

[0038] Because the bottom of the gear wheel bucket 31 will be frequently pushed by the rotating roller 52b, the outer wall surface of the gear wheel bucket 31 is sprayed with polyurethane paint to increase the wear resistance of the bottom of the gear wheel bucket 31.

[0039] The stability of the side clamping plates 32 needs to be ensured when the side clamping plates 32 slide, the positions of the sliding blocks 33 and the sliding grooves 36 are distributed in a triangular shape, as shown in Figure 2 , the distribution positions of the sliding blocks 33 can be known, the stability of the triangular shape is used to increase the stability of the side clamping plates 32 when moving.

[0040] As shown in Figure 3 and Figure 5As shown, in order to ensure the feasibility of the rotating frame 52d in rotation, the sliding feature of the connecting assembly 7 is used, the connecting assembly 7 comprises two sliding rods 71, the two sliding rods 71 are installed on the side surface of the intersection of the two rotating frames 52d, the outer wall of the sliding rod 71 is slidably sleeved with a sliding frame 72, and the outer wall of the sliding rod 71 is provided with a baffle 73. When the rotating frame 52d rotates, the sliding rod 71 is driven to slide linearly in the sliding frame 72, so that the activity of the rotating frame 52d at the intersection is avoided, and the sliding rod 71 changes up and down with the cross rotation of the rotating frame 52d, and the motion trajectory is limited by the sliding frame 72.

[0041] In order to ensure the synchronization of the pushing of the opposite clamping plates 32, the two servo motors 41 are connected in series in an electrical manner, and the servo motors 41 can work synchronously.

[0042] The working principle of the utility model is described below with a preferred embodiment: the gear is placed in the inside of the gear hopper 31, the servo motor 41 is powered to drive the screw rod 44 to rotate, drive the screw cylinder 46 to generate a pushing action, and make the sliding port 45 slide on the outer wall of the frame 42, the screw cylinder 46 is displaced to push the opposite clamping plate 32, and the two opposite clamping plates 32 clamp the gear to fix the gear in the inside of the gear hopper 31. The hydraulic cylinder 51c is elongated to drive the bottom of the rotating frame 52d through the pushing connecting frame 51b, the movement of the bottom of the rotating frame 52d drives the top of the rotating frame 52d to rise, and the rotating roller 52b lifts the gear hopper 31. After the gear hopper 31 is lifted, the center positioning ring 34 contacts the positioning rod 2, the gear is concentric with the center of the center positioning ring 34 and the positioning rod 2, and the position of the gear is in the concentric position with the positioning rod 2 after the gear hopper 31 stops moving. At this time, the positioning rod 2 fixes the gear for the next gear bounce detection.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A gear measuring instrument comprising a run-out measuring instrument body (1) and positioning rods (2), the positioning rods (2) being two and symmetrically mounted on both sides of the run-out measuring instrument body (1), characterized in that, The middle of the jump instrument body (1) is provided with a lifting part (5), the lifting part (5) includes a power assembly (51) and a support assembly (52), the power assembly (51) includes a hydraulic cylinder (51c), the support assembly (52) includes two cross active connection rotating frame (52d), the hydraulic cylinder (51c) pushes rotating frame (52d) movement, the top of rotating frame (52d) is installed gear loading assembly (3), the gear loading assembly (3) includes the gear wheel bucket (31) containing gear and side clamping plate (32), the two sides of gear wheel bucket (31) are provided with the pusher assembly (4) for pushing side clamping plate (32) fixed gear, the top center of side clamping plate (32) is installed with the center of circle synchronous center positioning ring (34) with positioning rod (2), the lifting part (5) lifts gear loading assembly (3) and is in contact with positioning rod (2).

2. A gear measuring machine according to claim 1, wherein, The power assembly (51) includes a base (51a), both ends of the base (51a) are provided with a hydraulic cylinder (51c), and the output end of the hydraulic cylinder (51c) is movably provided with a connecting frame (51b).

3. A gear measuring machine according to claim 2, wherein, The support assembly (52) includes two rotating frames (52d), and the two rotating frames (52d) are crossly and movably connected through a connecting assembly (7). The bottom of the rotating frame (52d) is movably provided with a roller (52e), the roller (52e) is arranged in the base (51a), the connecting frame (51b) is connected with the bottom of the rotating frame (52d), and the top of the rotating frame (52d) is movably provided with a mounting frame (52a) through a rotating shaft (52c).

4. A gear measuring machine according to claim 3, wherein, The gear loading assembly (3) includes a gear wheel bucket (31), both ends of the gear wheel bucket (31) are connected with the base (51a) through a limiting assembly (6), the bottom of the gear wheel bucket (31) is arranged on the rotating roller (52b), both sides and the bottom center of the inside of the gear wheel bucket (31) are provided with a sliding groove (36), the side clamping plate (32) has two and is arranged on both sides of the gear wheel bucket (31), the sliding block (33) is arranged on the corresponding position of the outer wall of the side clamping plate (32) and the sliding groove (36), the sliding block (33) is clamped in the inside of the sliding groove (36), and the inside of the center positioning ring (34) is movably provided with a pressure sensor (35).

5. A gear measuring machine according to claim 4, wherein, The pushing assembly (4) is provided with two frames (42) located at the two sides of the side clamping plates (32), the two ends of the frame (42) are connected with the outer side walls of the gear hoppers (31), the middle part of the frame (42) is provided with a chassis (43) and a screw cylinder (46), the two ends of the chassis (43) are connected with the frame (42) and are provided with a servo motor (41), the output end of the servo motor (41) is provided with a screw rod (44), the outer wall of the screw cylinder (46) is provided with sliding openings (45) at the two sides, the screw cylinder (46) is located at the middle part of the frame (42), the frame (42) at the position is slidably connected with the sliding grooves of the sliding openings (45), and the screw rod (44) is threadedly connected with the screw cylinder (46).

6. A gear measuring machine according to claim 4, wherein, The limiting assembly (6) comprises a supporting plate (61) and a limiting ring (63), one end of the supporting plate (61) is installed on the base (51a), the other end of the supporting plate (61) is provided with a limiting rod (62), the limiting ring (63) is installed on the gear hopper (31), and the limiting rod (62) penetrates into the inside of the limiting ring (63).

7. A gear measuring machine according to claim 4, wherein, The outer wall surface of the gear hopper (31) is sprayed with polyurethane paint.

8. A gear measuring machine according to claim 4, wherein, The position distribution of the sliding blocks (33) and the sliding grooves (36) is triangular.

9. A gear measuring machine according to claim 4, wherein, The connecting assembly (7) comprises two sliding rods (71), the two sliding rods (71) are installed on the side surfaces of the cross positions of the two rotating frames (52d), the outer wall of the sliding rod (71) is slidably sleeved with a sliding frame (72), and the outer wall of the sliding rod (71) is provided with a baffle (73).

10. A gear measuring machine according to claim 5, wherein, The two servo motors (41) are connected in series in electric connection.

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