CN221706408U - Clamp for measuring verticality and coaxiality of gear assembly - Google Patents

Abstract

The utility model belongs to the technical field of measurement, and discloses a clamp for measuring verticality and coaxiality of a gear assembly, which comprises a flat plate, a needle holder, a thimble, a supporting rod, a vertical meter holder, a horizontal meter holder and a dial indicator; the center of the flat plate is provided with a vertical supporting rod, the front end of the flat plate is provided with a sliding groove, two thimble frames are arranged on two sides of the sliding groove, the thimble frames move or are fixed relative to the sliding groove through knurled nuts and screws, one thimble is arranged opposite to each thimble frame, and the two thimble frames relatively form a rotating shaft of a fixed gear; the vertical meter frame and the horizontal meter frame are detachably arranged on the supporting rod, and when the dial indicator is arranged on the supporting rod through the vertical meter frame, the measuring end of the dial indicator contacts with the radial surface of the gear; when the dial indicator is arranged on the supporting rod through the horizontal meter frame, the measuring end of the dial indicator is contacted with the axial surface of the gear. The utility model has simple operation, and can effectively check the verticality and coaxiality between the sheet gears and the gears in the gear assembly by replacing the vertical meter frame and the horizontal meter frame.

Description

A fixture for measuring the verticality and coaxiality of gear components

Technical Field

The utility model belongs to the technical field of measurement and relates to a measuring fixture for gears, in particular to a fixture for measuring the verticality and coaxiality of a gear assembly.

Background Art

The automatic unlocking device achieves locking and releasing by controlling the operation of the gear assembly inside the product. Whether the coaxiality and verticality of the gear assembly meet the requirements has an important impact on whether it can rotate flexibly and without jamming. In order to effectively ensure the smooth operation of the gear assembly and avoid the automatic unlocking device from not working properly, the coaxiality and verticality of the gear assembly must be accurately measured and controlled.

In the past, the coaxiality and perpendicularity of gear assemblies were tested using two types of fixtures, which made disassembly and assembly complicated and the measurement accuracy was inaccurate.

Utility Model Content

Purpose of the utility model:

In order to solve the above problems, the utility model provides a fixture for measuring the verticality and coaxiality of a gear assembly. The measuring fixture can effectively realize the precise measurement of the coaxiality and verticality between the gears in the gear assembly without disassembling the gears.

The technical solutions of this utility model are as follows:

A fixture for measuring the verticality and coaxiality of a gear assembly comprises a plate, an ejector rack, an ejector, a support rod, a vertical gauge rack, a horizontal gauge rack and a dial indicator; a vertical support rod is provided in the center of the plate, a slide groove is provided at the front end of the plate, two ejector racks are arranged on both sides of the slide groove, the ejector rack is moved or fixed relative to the slide groove by a knurled nut and a screw, and an ejector is respectively provided opposite to each other on two ejector racks, and the two ejector racks relatively form a rotating shaft for fixing the gear; the vertical gauge rack and the horizontal gauge rack are detachably mounted on the support rod, and when the dial indicator is mounted on the support rod via the vertical gauge rack, the measuring end of the dial indicator contacts the radial surface of the gear; when the dial indicator is mounted on the support rod via the horizontal gauge rack, the measuring end of the dial indicator contacts the axial surface of the gear.

Furthermore, the support rod passes through the flat plate from the bottom upward, and is then fixed to the flat plate through a nut and a washer. The outer side of the support rod is an external thread, which cooperates with the nut.

Furthermore, a slide groove is also provided at the rear end of the plate, and the slide groove at the rear end of the plate is also provided with two opposite ejector racks. The ejector racks of the slide groove at the rear end of the plate are each provided with a V-shaped block opposite to each other, and the two V-shaped blocks relatively form a limiting journal sleeve for fixing the gear.

Furthermore, the vertical meter stand is a symmetrical double-end structure, with round clamps at the ends, and the ends of the round clamps are retracted and released by knurled screws; one of the round clamps is used to clamp the support rod, and the other round clamp is used to clamp the dial indicator.

Furthermore, the horizontal table frame is a structural deformation of the vertical table frame, and one round mouth clamp is twisted 90 degrees with another round mouth clamp.

Furthermore, it also includes supporting feet, and four supporting feet are arranged at the four corners of the bottom of the flat plate.

The advantages of the utility model are as follows:

1. The measuring fixture of the utility model is easy to operate. By replacing the vertical table frame and the horizontal table frame, the verticality and coaxiality between the gears in the gear assembly can be effectively checked to ensure that the assembled gear assembly meets the requirements.

2. When switching between verticality and coaxiality detection, this fixture does not need to adjust the installation position of the gear, ensuring the convenience of detection.

3. This fixture has two structures for fixing gears: V-shaped blocks and ejector pins, ensuring that gears of various structural forms can be clamped. In addition, a slide groove is used to control the spacing between the V-shaped blocks and ejector pins, effectively ensuring the length range of the test gear to accommodate more types of gears.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the implementation method of the utility model patent, the following is a brief introduction to the drawings required for use in the implementation method. It should be understood that the following drawings only show certain embodiments of the utility model patent and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

FIG1 is a front view of the measuring fixture of the utility model;

FIG2 is a top view of the measuring fixture of the utility model;

Figure 3 is a front view of the vertical table stand and dial indicator of the utility model;

FIG4 is a top view of a vertical table stand of the utility model;

FIG5 is a front view of the gear assembly;

Among them, 1: gear, 2: gear, 3: knurled nut, 4: screw, 5: ejector stand, 6: support rod, 7: nut, 8: cap plug, 9: ejector, 10: plate, 11: support foot, 12: washer, 13: V-shaped block, 14: vertical table stand, 15: knurled screw, 16: horizontal table stand, 17: dial indicator

DETAILED DESCRIPTION

This section is an embodiment of the utility model, which is used to explain and illustrate the technical solution of the utility model. In the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other.

In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the orientations or positional relationships of the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

Embodiment 1:

A fixture for measuring the verticality and coaxiality of a gear assembly comprises a plate 10, an ejector frame 5, an ejector 9, a support rod 6, a vertical gauge frame 14, a horizontal gauge frame 16 and a dial indicator 17; a vertical support rod 6 is provided at the center of the plate 10, a slide groove is provided at the front end of the plate 10, two ejector frames 5 are provided on both sides of the slide groove, the ejector frames 5 are moved or fixed relative to the slide groove by a knurled nut 3 and a screw 4, and an ejector 9 is respectively provided opposite to each other in the two ejector frames 5, and the two ejector frames 9 relatively form a rotating shaft for fixing a gear 2; the vertical gauge frame 14 and the horizontal gauge frame 16 are detachably mounted on the support rod 6, and when the dial indicator 17 is mounted on the support rod 6 through the vertical gauge frame 14, the measuring end of the dial indicator 17 contacts the radial surface of the gear 2; when the dial indicator 17 is mounted on the support rod 6 through the horizontal gauge frame 16, the measuring end of the dial indicator 17 contacts the axial surface of the gear 2.

The support rod 6 passes through the flat plate 10 upward from the bottom thereof, and is then fixed to the flat plate 10 by means of a nut 7 and a washer 12 . The outer side of the support rod 6 is an external thread, which cooperates with the nut 7 .

The rear end of the plate 10 is also provided with a slide groove, and the slide groove of the rear end of the plate 10 is also provided with two opposite ejector racks 5. The ejector racks 5 of the slide groove at the rear end of the plate 10 are respectively provided with a V-shaped block 13, and the two V-shaped blocks 13 relatively form a limiting journal sleeve for fixing the gear 2.

The vertical meter frame 14 is a symmetrical double-end structure, with round clamps at the ends, and the ends of the round clamps are retracted and released by knurled screws 15; one of the round clamps is used to clamp the support rod 6, and the other round clamp is used to clamp the dial indicator 17.

The horizontal frame 16 is a structural deformation of the vertical frame 14, with one round-mouth clamp and another round-mouth clamp twisted 90 degrees.

The flat plate 10 also includes supporting feet 11 , and four supporting feet 11 are arranged at four corners of the bottom of the flat plate 10 .

Embodiment 2:

The utility model measures a gear assembly as shown in FIG5 , and the assembly is composed of a blade gear 1 and a gear 2 .

A measuring fixture, as shown in Figures 1 and 2, consists of a knurled nut 3, a screw 4, a thimble holder 5, a support rod 6, a nut 7, a cap plug 8, a thimble 9, a plate 10, a support foot 11, a washer 12, a V-shaped block 13, a vertical table stand 14, a knurled screw 15, a horizontal table stand 16, and a dial indicator 17.

During the assembly of a certain type of gear assembly, the coaxiality X between the gears is required to be 0.05 and the perpendicularity Y is required to be 0.06.

The first step is to adjust the V-block 13 so that the journal of the gear 2 can be placed on the V-block 13 and the sheet gear 1 is in the middle of the plate 10, and tighten the knurled nut 3 to fix the position of the V-block 13;

The second step is to install a flat measuring head on the dial indicator, install the dial indicator 17 on one end of the vertical frame 14, lock it with a knurled screw 15, install the other end of the vertical frame 14 on the support rod 6, and adjust the position of the vertical frame 14 up and down so that the flat measuring head of the dial indicator contacts the tooth surface of the gear;

The third step is to slowly rotate the gear assembly for two weeks and observe that the pointer of the dial indicator should not rotate more than 0.05 during this process;

Step 4: Remove the gear assembly from the V-shaped block 13, loosen the knurled nut 3, remove the vertical table frame 14 from the support rod 6, then remove the dial indicator 17 from the vertical table frame 14, and remove the flat measuring head from the dial indicator 17;

Step 5: Adjust the V-block 13 so that the journal of the gear 2 can be placed on the V-block 13 and the sheet gear 1 is on one side of the flat plate 10, and tighten the knurled nut 3 to fix the position of the V-block 13;

Step 6: Install the pointed measuring head on the dial indicator, install the dial indicator 17 on one end of the horizontal frame 16, lock it with the knurled screw 15, install the other end of the horizontal frame 16 on the support rod 6, and adjust the position of the horizontal frame 16 so that the pointed measuring head of the dial indicator vertically contacts the end face of the gear.

Step 7. Slowly rotate the assembly for two weeks and observe that the pointer of the dial indicator should not rotate more than 0.06 during this process.

The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable technicians familiar with the technical field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit and essence of the utility model should be included in the protection scope of the utility model. The technology, shape, and structure parts not described in detail in the utility model are all well-known technologies.

Claims (6)

1. The clamp for measuring the verticality and coaxiality of the gear assembly is characterized by comprising a flat plate (10), a thimble frame (5), a thimble (9), a supporting rod (6), a vertical meter frame (14), a horizontal meter frame (16) and a dial indicator (17); the center of the flat plate (10) is provided with a vertical supporting rod (6), the front end of the flat plate (10) is provided with a chute, two thimble frames (5) are arranged on two sides of the chute, the thimble frames (5) move or are fixed relative to the chute through knurled nuts (3) and screws (4), one thimble (9) is arranged opposite to each thimble frame (5), and the two thimble frames (9) relatively form a rotating shaft of the fixed gear (2); the vertical meter frame (14) and the horizontal meter frame (16) are detachably arranged on the supporting rod (6), and when the dial indicator (17) is arranged on the supporting rod (6) through the vertical meter frame (14), the measuring end of the dial indicator (17) is contacted with the radial surface of the gear (2); when the dial indicator (17) is arranged on the supporting rod (6) through the horizontal meter frame (16), the measuring end of the dial indicator (17) is contacted with the axial surface of the gear (2).

2. The clamp for measuring the verticality and coaxiality of the gear assembly according to claim 1, wherein the supporting rod (6) penetrates through the flat plate (10) from the lower direction of the flat plate (10), is fixed with the flat plate (10) through the nut (7) and the gasket (12), and is externally threaded on the outer side of the supporting rod (6) and is matched with the nut (7).

3. The clamp for measuring the verticality and coaxiality of the gear assembly according to claim 1, wherein a chute is also formed in the rear end of the flat plate (10), two opposite thimble frames (5) are also arranged in the chute in the rear end of the flat plate (10), each of the thimble frames (5) in the chute in the rear end of the flat plate (10) is provided with a V-shaped block (13) in an opposite mode, and the two V-shaped blocks (13) form a limiting journal sleeve of the fixed gear (2) in an opposite mode.

4. The clamp for measuring the perpendicularity and coaxiality of a gear assembly according to claim 1, wherein the vertical meter frame (14) is of a symmetrical double-end structure, the end part of the clamp is a circular clamp, and the tail end of the circular clamp is retracted and extended through a knurled screw (15); one of the circular clamps is used for clamping the supporting rod (6), and the other circular clamp is used for clamping the dial indicator (17).

5. A clamp for measuring verticality and coaxiality of a gear assembly according to claim 4, wherein the horizontal gauge stand (16) is a structural deformation of the vertical gauge stand (14), and the one circular jaw is twisted by 90 ° from the other circular jaw.

6. The fixture for measuring verticality and coaxiality of a gear assembly according to claim 1, further comprising four supporting legs (11), wherein the four supporting legs (11) are arranged at four corners of the bottom of the flat plate (10).