CN214842872U

CN214842872U - Gear measuring device

Info

Publication number: CN214842872U
Application number: CN202121439727.1U
Authority: CN
Inventors: 魏世军; 黄莉
Original assignee: Dongguan Jinjunteng Electromechanical Co Ltd
Current assignee: Dongguan Jinjunteng Electromechanical Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-11-23
Anticipated expiration: 2031-06-28

Abstract

The application relates to the field of measuring tools, in particular to a gear measuring device. The key points of the technical scheme are as follows: including frame, micrometer screw rod and anvil block are just right each other, form the measurement station between micrometer screw rod and the anvil block, still include clamping assembly and coupling assembling, and coupling assembling sets up on the frame, and the clamping assembly includes first clamping part, second clamping part and drive division, first clamping part and second clamping part respectively slide connect in on the coupling assembling, the drive division sets up on coupling assembling and links to each other with first clamping part and second clamping part respectively, and the drive division is used for driving first clamping part and second clamping part and is close to each other or keep away from each other, first clamping part and second clamping part be used for with two terminal surface looks clamping butt of gear to make the tooth of gear be located the measurement station, this application has the effect that promotes the measurement accuracy of gear.

Description

Gear measuring device

Technical Field

The application relates to the field of measuring tools, in particular to a gear measuring device.

Background

The gear is a mechanical element which is provided with a rim and is continuously meshed with the gear to transmit power and move, and the running stability of the gear is very important in the working process of the gear, so that after the gear is produced or before the gear is used, parameters of the gear, such as tooth space, gear diameter, addendum circle diameter and the like, need to be measured.

At present, a micrometer is generally used for measuring parameters on a gear, wherein the micrometer mainly comprises a frame, a micrometer screw and an anvil block, the anvil block is fixedly connected to the frame, the micrometer screw is connected to the frame in a sliding mode, the micrometer screw and the anvil block are opposite, in the gear measuring process, a hand-held gear is placed between the micrometer screw and the anvil block manually, then the micrometer screw is driven to approach the sliding anvil block, and the gear is clamped through the micrometer screw and the anvil block and parameters of the gear are measured.

In view of the above-mentioned related technologies, because the gear to be measured needs to be manually held to assist in measurement, certain manual errors easily exist, which causes inaccurate gear measurement parameters, and therefore the measurement accuracy of the gear needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to promote the measurement accuracy of gear, this application provides a gear measuring device.

The application provides a gear measuring device adopts following technical scheme:

a gear measuring device comprises a frame, a micrometer screw and an anvil block, wherein the micrometer screw and the anvil block are opposite to each other, a measuring station is formed between the micrometer screw rod and the anvil block, and the device also comprises a clamping assembly and a connecting assembly, the connecting assembly is arranged on the frame, the clamping assembly comprises a first clamping part, a second clamping part and a driving part, the first clamping part and the second clamping part are respectively connected on the connecting component in a sliding way, the driving part is arranged on the connecting component and is respectively connected with the first clamping part and the second clamping part, the drive part is used for driving the first clamping part and the second clamping part to be close to or far away from each other, and the first clamping part and the second clamping part are used for being clamped and abutted with two end faces of the gear, so that teeth of the gear are located in the measuring station.

By adopting the technical scheme, the gear to be measured is placed between the first clamping part and the second clamping part, and meanwhile, the first clamping part and the second clamping part are close to each other by starting the driving part, so that the gear to be measured is clamped and fixed, teeth of the gear are positioned on a measuring station at the moment, and the parameter of the gear can be measured; in the process of measuring the gear, the gear to be measured is clamped and fixed through the first clamping part and the second clamping part, the measuring process effectively reduces errors caused by manpower, and further the measuring precision of the gear is improved.

Preferably, the drive division includes two-way lead screw and bearing frame, the confession has been seted up on the coupling assembling the mounting groove of two-way lead screw installation, two-way lead screw is located in the mounting groove, the bearing frame is two, two bearing frame fixed connection respectively in on the both sides cell wall of mounting groove, two-way lead screw includes left screw section and right screw section, two-way lead screw runs through in proper order first clamping part and second clamping part and rotation connect in on the bearing frame, first clamping part threaded connection in on the left screw section, second clamping part threaded connection in on the right screw section.

Through adopting above-mentioned technical scheme, when needs are measured the gear, place the gear on coupling assembling, rotate two-way lead screw, left side hob section and right hob section on the two-way lead screw drive first clamping part and being close to each other of second clamping part, and then realize the clamping of gear fixedly to in need carry out the parameter measurement to the gear.

Preferably, coupling assembling includes connecting seat, installation department, drive lead screw and guide bar, the installation department set up in on the frame, the drive lead screw runs through installation department and threaded connection in on the installation department, the one end of drive lead screw with the connecting seat rotates to be connected, the one end fixed connection of guide bar in the connecting seat, the other end of guide bar runs through the installation department and slides the butt mutually with the installation department.

Through adopting above-mentioned technical scheme, when measuring the gear that the profile size is inconsistent, accessible clamping assembly presss from both sides the gear to the connecting seat on for the gear realizes fixedly, rotates the drive lead screw afterwards, under threaded connection's effect, can promote the connecting seat through the drive lead screw and be close to or keep away from to measuring the station, is convenient for adjust the locating position of gear, and then can satisfy and measure the gear that the profile size is inconsistent, and its structural design is reasonable and practical.

Preferably, a sliding groove for sliding the mounting part is formed in the frame, and the length direction of the sliding groove is consistent with the moving direction of the micrometer screw rod.

Through adopting above-mentioned technical scheme, when measuring the inconsistent gear of tooth width, because of the difference of tooth thickness, the center that has the gear of different sizes is easy along the flexible direction skew of micrometer screw rod, here, through sliding the installation department, can make the central removal adjustment of gear, and then can satisfy the gear and arrive suitable measuring position, satisfy the in-service use operating mode demand.

Preferably, the tooth-measuring device further comprises a first chuck and a second chuck, the first chuck is fixedly connected to one end of the micrometer screw, the second chuck is fixedly connected to one end of the anvil block, the first chuck and the second chuck are arranged in a right-to-right mode, and the first chuck and the second chuck are used for clamping teeth.

Through adopting above-mentioned technical scheme, correspond first (holding) chuck of fixedly connected with and second (holding) chuck on the side end face of micrometer screw rod and on the side end face of anvil respectively, when measuring the tooth of counter gear, first (holding) chuck and second (holding) chuck can be inserted by the clearance between the tooth to the both sides surface of butt and tooth respectively has increased the centre gripping area, and then be convenient for measure the tooth thickness, this structure can promote the comprehensive nature of gear parameter measurement.

Preferably, frame one side fixedly connected with fixing base, the fixing base includes bottom plate and bracing piece, the one end of bracing piece with bottom plate fixed connection, the other end of bracing piece with frame fixed connection, the bracing piece with the bottom plate is mutually perpendicular.

Through adopting above-mentioned technical scheme, the fixing base can support the micrometer, and simultaneously, the fixing base can place the micrometer on the workstation of difference, and the fixing base can make the micrometer more firm at the measuring in-process, and the measuring accuracy of promotion micrometer when measuring that can step forward, its structural design is reasonable and practical.

Preferably, the supporting rod comprises a first rod section and a second rod section, one end of the first rod section is fixedly connected with the frame, and one end of the second rod section, which is far away from the frame, is fixedly connected with the bottom plate;

the first rod section is arranged in the second rod section, the outer wall of the first rod section is in sliding butt joint with the inner wall of the second rod section, a pin shaft is arranged on the second rod section and used for adjusting the height of the fixing seat, and the pin shaft penetrates through the second rod section and is inserted into the first rod section.

Through adopting above-mentioned technical scheme, be equipped with the round pin axle on the second pole section, the round pin axle runs through the second pole section and inserts and connect to first pole section in, remove the position of first pole section at the second pole section, thereby the grafting position of adjusting pin axle can be to the whole height of bracing piece adjust, and then realize the regulation to the height of fixing base, through being the fixing base of adjustable height with the fixing base design, can satisfy the micrometer and use at the not workstation of co-altitude, and then be convenient for the measurement to the gear, its structural design is reasonable and practical.

Preferably, the first clamping portion and the second clamping portion are both provided with anti-slip pads, and the anti-slip pads face the gear.

Through adopting above-mentioned technical scheme, be equipped with the slipmat on first clamping part and second clamping part, when first clamping part and second clamping part gear clamp are fixed, the slipmat can effectual reduction gear pine take off or the possibility that drops, can further promote the measurement accuracy of gear, and simultaneously, the slipmat can protect the gear, is difficult for causing the damage on gear surface to the gear.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the driving part can drive the first clamping part and the second clamping part to be close to or far away from each other, the gear is placed between the first clamping part and the second clamping part in the process of parameter measurement of the gear, and the driving part drives the first clamping part and the second clamping part to be close to each other, so that the first clamping part and the second clamping part are respectively abutted to the surfaces of the two sides of the gear, the gear is clamped and fixed, the factor of errors caused by manual work in the measurement process of the gear is reduced, and the measurement precision of the gear is improved;

2. in the process of measuring gears with different sizes of profiles, the gears are placed on the clamping assembly, the clamping assembly clamps and fixes the gears, the driving screw rod is started, the gears on the clamping assembly are close to or far away from the measuring station through the driving screw rod, and therefore the gears with different sizes of profiles can be measured;

3. all be equipped with the slipmat on one side surface of first clamping part and second clamping part orientation in the gear, when pressing from both sides the gear, the slipmat can effectual reduction gear pine take off or the possibility that drops, simultaneously, still can protect the surface of gear, is difficult for causing the fish tail to the surface of gear, and its structural design is reasonable and practical.

Drawings

Fig. 1 is a schematic structural view of a gear measuring device according to the present application.

Fig. 2 is a schematic structural diagram of the connecting component and the clamping component of the present application.

Fig. 3 is a schematic structural view of a clamping assembly of the present application.

Description of reference numerals: 1. a frame; 2. a micrometer screw; 3. an anvil block; 4. a first chuck; 5. a second chuck; 6. a fixed seat; 61. a base plate; 62. a support bar; 621. a first pole segment; 622. a second pole segment; 7. a clamping assembly; 71. a first clamping portion; 72. a second clamping portion; 73. a drive section; 731. a bidirectional screw rod; 7313. a left screw section; 7314. a right screw section; 732. a bearing seat; 74. a second hand wheel; 8. a connecting assembly; 81. a connecting seat; 82. an installation part; 83. driving the screw rod; 84. a first hand wheel; 85. a guide bar; 9. a pin shaft; 10. a through hole; 11. a sliding groove; 12. a via hole; 13. a bearing; 14. a guide hole; 15. mounting grooves; 16. a sliding block; 17. a non-slip mat.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses gear measuring device. Referring to fig. 1, the gear measuring device comprises a frame 1, a micrometer screw 2 and an anvil block 3, wherein the micrometer screw 2 and the anvil block 3 are both arranged on the frame 1, the end of the micrometer screw 2 is opposite to the anvil block 3, and a measuring station is formed between the micrometer screw 2 and the anvil block 3. In the measuring process, the gear is placed in the measuring station and the micrometer screw 2 is rotated, so that the micrometer screw 2 can move linearly towards the anvil block 3 to approach until the micrometer screw 2 and the anvil block 3 clamp and fix the gear, and the gear is measured.

Referring to fig. 1, in order to increase the clamping area of the anvil 3 and the micrometer screw 2, the gear measuring device further includes a first chuck 4 and a second chuck 5, the first chuck 4 is in a shape of a disk in this embodiment, wherein the first chuck 4 is fixedly connected to an end surface of one side of the anvil 3 by welding, the size of the first chuck 4 is larger than that of the end surface of the anvil 3, and the first chuck 4 faces the micrometer screw 2; the second chuck 5 is fixedly connected to one side end face of the micrometer screw 2 in a welding and fixing mode, the size of the second chuck 5 is larger than that of the end face of the micrometer screw 2, the second chuck 5 faces the anvil block 3, the first chuck 4 is opposite to the second chuck 5, the first chuck 4 and the second chuck 5 can be used for clamping teeth, and when the micrometer screw 2 moves towards the anvil block 3 or moves away from the anvil block 3, the first chuck 4 and the second chuck 5 are correspondingly close to or far away from each other.

With reference to fig. 1, in order to improve the measurement accuracy of the workpiece, the gear measuring device further includes a fixing base 6, a clamping assembly 7 and a connecting assembly 8, wherein the fixing base 6 is fixedly connected to the frame 1, and the fixing base 6 can be placed on the worktable to support and fix the frame 1, thereby improving the stability of the gear detecting device during use. The connecting assembly 8 is arranged on the frame 1, and the position of the connecting assembly 8 on the frame 1 can be adjusted along the telescopic direction of the micrometer screw 2; the clamping assembly 7 is used for clamping the gear, the clamping assembly 7 is arranged on the connecting assembly 8, the connecting assembly 8 can also push the clamping assembly 7 to be close to or far away from the measuring station, and the gear on the clamping assembly 7 can be conveyed to the measuring station by adjusting the position of the connecting assembly 8 on the frame 1 and adjusting the relative position of the clamping assembly 7 and the detecting station, so that the gear can be clamped and measured by the micrometer screw 2 and the anvil block 3.

Referring to fig. 1, in order to improve the overall stability of the measuring device, specifically, the fixing base 6 includes a bottom plate 61 and a supporting rod 62, when the device is in normal use, the bottom surface of the fixing base 6 is placed on the workbench, and at this time, the bottom plate 61 is horizontally disposed.

In addition, the supporting rod 62 includes a first rod segment 621 and a second rod segment 622, wherein the first rod segment 621 and the second rod segment 622 can be square rods or round rods, in an embodiment, the first rod segment 621 and the second rod segment 622 are round rods, the first rod segment 621 and the second rod segment 622 are hollow rods, meanwhile, the size and shape of the first rod segment 621 is smaller than that of the second rod segment 622, the first rod segment 621 is inserted into the second rod segment 622, the inner wall of the first rod segment 621 slides and abuts against the outer wall of the second rod segment 622, and at this time, the first rod segment 621 can extend and retract relative to the second rod segment 622; meanwhile, a pin shaft 9 is arranged on the second rod section 622, a plurality of through holes 10 are formed in the first rod section 621 in a penetrating manner along the length direction, a through hole 10 is also formed in the second rod section 622 in a penetrating manner, in the process of mutual telescopic movement of the first rod section 621 and the second rod section 622, the through hole 10 in the second rod section 622 can be aligned with the through hole 10 in the first rod section 621, the pin shaft 9 is inserted into the through hole 10 in the first rod section 621 through the through hole 10 in the second rod section 622, and at the moment, the relative position between the first rod section 621 and the second rod section 622 is adjustable.

In addition, one end of the first rod segment 621, which is far away from the second rod segment 622, is fixedly connected to one side surface of the frame 1 by means of welding, and one end of the second rod segment 622, which is far away from the first rod segment 621, is fixedly connected to the top of the bottom plate 61 by means of welding.

Here, bottom plate 61 stabilizes the support to bracing piece 62, and under the supporting role of bracing piece 62, frame 1, micrometer screw rod 2, anvil block 3, clamping component 7 and coupling assembling 8 obtain firm the support, and the overall stability of device obtains promoting, in addition, through taking out the position of inserting round pin axle 9, can make the length of bracing piece 62 realize adjusting, and then makes the whole height-adjustable of device, satisfies the not user demand of co-altitude of device.

Referring to fig. 1 and 2, in order to adjust the position of the clamping assembly 7, the placing position of the gear during measurement is met; specifically, coupling assembling 8 includes connecting seat 81, installation department 82, drive lead screw 83, first hand wheel 84 and guide bar 85, it is specific, installation department 82 is T type piece, the groove 11 that slides that supplies installation department 82 to slide is offered at frame 1 side surface from the extroversion inwards, this groove 11 that slides is T type groove, this groove 11 that slides extends along micrometer screw 2's moving direction, installation department 82's size shape should with the size shape looks adaptation of groove 11 that slides, installation department 82 slides and connects in groove 11 that slides, the outer wall of installation department 82 slides the butt with the cell wall of groove 11 that slides mutually, in addition, it is provided with via hole 12 to run through on frame 1, via hole 12 is rectangular poroid setting, via hole 12 extends along the length direction of groove 11 that slides, one side opening of via hole 12 is relative with the measurement station, and the middle part and the groove 11 that slides of via hole 12 are linked together. At this time, the mounting portion 82 can be adjusted to move in accordance with the movement of the micrometer screw 2.

In addition, the connection seat 81 may be a rectangular parallelepiped or a square, in this embodiment, the connection seat 81 is a rectangular parallelepiped, and the bearing 13 is mounted on a bottom surface of the connection seat 81. In addition, a threaded hole for the driving screw 83 to be in threaded connection is formed in the mounting portion 82 in a penetrating mode, one end of the threaded hole faces to an inner ring of the bearing 13 on the bearing 13, the driving screw 83 is in threaded connection with the mounting portion 82, the driving screw 83 penetrates through the mounting portion 82 at the moment, one end of the driving screw 83 is mounted on the inner ring of the bearing 13 in an interference fit mode, the other end of the driving screw 83 is fixedly welded with the first hand wheel 84, at the moment, the mounting portion 82 can drive the connecting seat 81 to slide between the micrometer screw 2 and the anvil block 3 in a reciprocating mode, and the connecting seat 81 can move along with the detection station.

In addition, the guide bar 85 can be round bar or square bar, the guide bar 85 is the round bar in this embodiment, the guide bar 85 is two, the guide bar 85 parallels with the drive lead screw 83, and two guide bars 85 are located the both sides of drive lead screw 83 respectively, welded fastening's mode welded fastening is passed through to the one end of guide bar 85 in connecting seat 81, and simultaneously, run through on the installation department 82 and set up two guiding holes 14 that supply guide bar 85 to wear to establish, the size and shape size looks adaptation of guiding hole 14 should with the size and shape of guide bar 85, the inner wall of guiding hole 14 slides the butt with the guide bar 85 outer wall mutually.

Clamping assembly 7 sets up on connecting seat 81, on the one hand, through rotating first hand wheel 84, first hand wheel 84 drives drive lead screw 83 and rotates, under the guide effect of guide bar 85, the connecting block is close to the measuring station, and then make clamping assembly 7 drive the gear and be close to the measuring station, on the other hand, start micrometer screw 2 afterwards, the setting of sliding of installation department 82 on frame 1 makes micrometer screw 2 can promote the gear and move towards anvil block 3, clamp to the tooth both sides until anvil block 3 and micrometer screw 2, finally can realize measuring.

Referring to fig. 3, to clamp and fix the gear, the clamping assembly 7 includes a first clamping portion 71, a second clamping portion 72, a driving portion 73 and a second handwheel 74, wherein, the driving part 73 comprises a bidirectional screw rod 731 and a bearing seat 732, an installation groove 15 for installing the bidirectional screw rod 731 is concavely arranged on the surface of one side of the connecting seat 81 departing from the supporting rod 62 from outside to inside, the arranging direction of the installation groove 15 is vertical to the moving direction of the micrometer screw rod 2, the bidirectional screw rod 731 is positioned in the installation groove 15, the length direction of the bidirectional screw rod 731 is consistent with the arranging direction of the installation groove 15, in addition, two bearing seats 732 are provided, the two bearing seats 732 are respectively installed on two side groove walls opposite to the installation groove 15, two ends of the bidirectional screw 731 are respectively installed on the two bearing seats 732, one end of the bidirectional screw 731 extends to the outside of the connecting seat 81 and is fixedly connected with the second wheel 74 in a welding and fixing manner.

In addition, the first clamping portion 71 and the second clamping portion 72 are clamping plates, the clamping plates are long plate-shaped in this embodiment, the first clamping portion 71 and the second clamping portion 72 are parallel to each other and face each other, bottom surfaces of the first clamping portion 71 and the second clamping portion 72 are in sliding contact with a surface of the connecting seat 81, meanwhile, a sliding block 16 is fixedly connected to one side of the first clamping portion 71 and one side of the second clamping portion 72, the sliding block 16 is located in the installation groove 15, an outer wall of the sliding block 16 is in sliding contact with a groove wall of the installation groove 15, in addition, a threaded connection hole is formed in the sliding block 16 in a penetrating manner, a bidirectional screw 731 penetrates through the threaded connection hole in the sliding block 16, the bidirectional screw 731 comprises a left screw section 7313 and a right screw section 7314, the sliding block 16 of the first clamping portion 71 is in threaded connection with the left screw section 7313, the sliding block 16 of the second clamping portion 72 is in threaded connection with the right screw section 7314, the bidirectional screw 731 is rotated by holding the second hand wheel 74, so that the first clamping portion 71 and the second clamping portion 72 can be close to or away from each other at the same time, and when the first clamping portion 71 and the second clamping portion 72 are close to each other, the first clamping portion 71 and the second clamping portion 72 clamp and fix two opposite sides of the gear.

Further, the anti-slip pad 17 is fixedly connected to the surfaces of the first clamping portion 71 and the second clamping portion 72, which face the gear, in a gluing manner, so that the anti-slip pad 17 can effectively reduce the possibility of loosening or falling off of the gear when the gear is clamped and measured.

When the gear needs to be clamped and measured, the gear is placed between the first clamping portion 71 and the second clamping portion 72, the second hand wheel 74 is held and rotated, so that the bidirectional screw 731 is driven to rotate, the first clamping portion 71 and the second clamping portion 72 slide towards two sides of the gear to approach, and finally the anti-slip pads 17 on the first clamping portion 71 and the second clamping portion 72 are abutted and clamped on two opposite sides of the gear.

The implementation principle of the gear measuring device in the embodiment of the application is as follows: when the gear needs to be measured, the gear is placed between the first clamping portion 71 and the second clamping portion 72 on the connecting base 81, the bidirectional screw rod 731 is started, the first clamping portion 71 and the second clamping portion 72 are enabled to be close to each other and clamp the gear, meanwhile, the driving screw rod 83 is started, the gear can be enabled to be close to or far away from the measuring station, the gear is located between the micrometer screw rod 2 and the anvil block 3, then the micrometer screw rod 2 is driven to move towards the anvil block 3, the micrometer screw rod 2 is abutted to one side surface of the gear at the moment, the gear on the connecting base 81 is enabled to move towards the anvil block 3 under the action of the mounting portion 82, and the gear can be measured until the micrometer screw rod 2 and the anvil block 3 are abutted to two sides of the gear.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A gear measuring device comprising a frame (1), a micrometric screw (2) and an anvil (3), said micrometric screw (2) and said anvil (3) being reciprocally opposite, said micrometric screw (2) and said anvil (3) forming a measuring station therebetween, characterized in that: also comprises a clamping component (7) and a connecting component (8), wherein the connecting component (8) is arranged on the frame (1), the clamping assembly (7) comprises a first clamping part (71), a second clamping part (72) and a driving part (73), the first clamping part (71) and the second clamping part (72) are respectively connected on the connecting component (8) in a sliding way, the driving part (73) is arranged on the connecting component (8) and is respectively connected with the first clamping part (71) and the second clamping part (72), the driving part (73) is used for driving the first clamping part (71) and the second clamping part (72) to approach or separate from each other, the first clamping part (71) and the second clamping part (72) are used for clamping and abutting with two end faces of the gear, so that teeth of the gear are located in the measuring station.

2. A gear measuring device according to claim 1, wherein: the driving part (73) comprises a bidirectional screw rod (731) and a bearing seat (732), the connecting component (8) is provided with an installation groove (15) for installing the bidirectional screw rod (731), the two-way screw rod (731) is positioned in the mounting groove (15), the number of the bearing seats (732) is two, the two bearing seats (732) are respectively and fixedly connected to the two side groove walls of the mounting groove (15), the bidirectional screw (731) comprises a left screw segment (7313) and a right screw segment (7314), the bidirectional screw rod (731) penetrates through the first clamping part (71) and the second clamping part (72) in sequence and is connected to the bearing seat (732) in a rotating way, the first clamping part (71) is connected to the left screw rod section (7313) in a threaded manner, the second clamping portion (72) is threadedly connected to the right screw segment (7314).

3. A gear measuring device according to claim 1, wherein: coupling assembling (8) are including connecting seat (81), installation department (82), drive lead screw (83) and guide bar (85), installation department (82) set up in on frame (1), drive lead screw (83) run through installation department (82) and threaded connection in on installation department (82), the one end of drive lead screw (83) with connecting seat (81) rotate and connect, the one end fixed connection of guide bar (85) in connecting seat (81), the other end of guide bar (85) runs through installation department (82) and the butt that slides mutually with installation department (82).

4. A gear measuring device according to claim 1, wherein: offer on frame (1) and supply sliding groove (11) that installation department (82) slided, the length direction in sliding groove (11) with the moving direction of micrometer screw rod (2) is unanimous.

5. A gear measuring device according to claim 1, wherein: the tooth-measuring device is characterized by further comprising a first clamping disc (4) and a second clamping disc (5), wherein the first clamping disc (4) is fixedly connected to one end of the micrometer screw (2), the second clamping disc (5) is fixedly connected to one end of the anvil block (3), the first clamping disc (4) and the second clamping disc (5) are arranged in a right-to-right mode, and the first clamping disc (4) and the second clamping disc (5) are used for clamping teeth.

6. A gear measuring device according to claim 1, wherein: frame (1) one side fixedly connected with fixing base (6), fixing base (6) include bottom plate (61) and bracing piece (62), the one end of bracing piece (62) with bottom plate (61) fixed connection, the other end of bracing piece (62) with frame (1) fixed connection, bracing piece (62) with bottom plate (61) are mutually perpendicular.

7. A gear measuring device according to claim 6, wherein: the supporting rod (62) comprises a first rod section (621) and a second rod section (622), one end of the first rod section (621) is fixedly connected with the frame (1), and one end of the second rod section (622) far away from the frame (1) is fixedly connected with the bottom plate (61);

the first rod section (621) is arranged in the second rod section (622), the outer wall of the first rod section (621) is in sliding abutting joint with the inner wall of the second rod section (622), a pin shaft (9) is arranged on the second rod section (622), the pin shaft (9) is used for adjusting the height of the fixing seat (6), and the pin shaft (9) penetrates through the second rod section (622) and is inserted into the first rod section (621).

8. A gear measuring device according to claim 1, wherein: the first clamping portion (71) and the second clamping portion (72) are provided with anti-slip pads (17), and the anti-slip pads (17) face the gear.