A portable device for measuring the span of sector gears

Abstract

The present invention belongs to the technical field of gear span measurement, and specifically relates to a portable fan gear span measurement device. It includes a base plate, a gear fixing assembly, a dial gauge fixing assembly, a dial gauge, and a measuring head; the gear fixing assembly and the dial gauge fixing assembly are relatively arranged on the base plate; the dial gauge is arranged on the dial gauge fixing assembly, and the measuring rod of the dial gauge faces the gear fixing assembly; the measuring head is arranged at the end of the measuring rod of the dial gauge; the gear to be measured is rotatably clamped on the gear fixing assembly, and the dial gauge is used to measure and calculate the span value. The present invention can measure the span of fan gears that are difficult to measure with conventional measuring devices, and has a reliable structure, economical cost, convenient operation, small measurement error, good repeatability, and strong practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of gear span-rod distance measurement, and in particular relates to a portable sector gear span-rod distance measurement device. Background Art

[0002] The span is an important technical parameter of the gear, which directly affects the transmission coordination of the gear pair. Conventional gears are generally circular, and the span value can be measured using a conventional span measuring device. However, our company's production process involves a large number of special-shaped gears, such as sector gears, and the conventional span measuring device cannot achieve accurate measurement. Therefore, it is necessary to design a new span measuring device to solve the above problem. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a portable sector gear span measuring device with high stability, high precision and reliable measurement data.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a portable fan-shaped gear cross-rod distance measuring device, comprising a base plate, a gear fixing assembly, a micrometer fixing assembly, a micrometer, and a measuring head; the gear fixing assembly and the micrometer fixing assembly are relatively arranged on the base plate; the micrometer is arranged on the micrometer fixing assembly, and the measuring rod of the micrometer faces the gear fixing assembly; the measuring head is arranged at the end of the measuring rod of the micrometer; the gear fixing assembly comprises a base, a group of elastic telescopic rods, and a positioning frame; the base is fixed to the base plate; the positioning frame is connected to the base by elastic telescopic rods, and the positioning frame is located on a side close to the micrometer fixing assembly; a first card slot is opened on the positioning frame along the vertical direction; a second card slot is opened on the base along the vertical direction; and the first card slot and the second card slot are arranged relatively to each other; a notch for accommodating a gear is also provided at a position on the base opposite to the positioning frame.

[0005] When the present invention is used, the positioning frame is opened to clamp the gear to be tested between the first slot and the second slot, and then the measuring head is fully contacted with the tooth groove of the gear to be tested, the micrometer value is read, and then the gear is rotated, and other tooth grooves are tested in the same way. In addition, before the test, a pin needle can be used for zero calibration to further improve the accuracy of the test. The specific operation is to open the positioning frame and clamp the pin needle between the first slot and the second slot, and then make the measuring head fully contact with the pin needle for zero calibration.

[0006] Preferably, the first clamping groove and the second clamping groove are both V-shaped grooves. When the gear to be measured is clamped with the V-shaped groove, the positioning is more accurate, the measurement error is small, and the repeatability is good.

[0007] Preferably, the base is L-shaped. The L-shaped base is convenient for vertical installation on the bottom plate and for horizontal installation of other components on the base.

[0008] Furthermore, a group of guide posts are fixed on the positioning frame, and the guide posts are slidably arranged in the base. The addition of guide posts can further improve the accuracy and reliability of the relative position of the first card slot and the second card slot, and ensure the measurement accuracy.

[0009] Furthermore, the micrometer fixing assembly includes a pair of first limit blocks, a pair of second limit blocks, a slider, an adjusting bolt, a support column, a fixed block, and a locking bolt; a pair of first limit blocks are fixed in parallel to the base plate; a pair of second limit blocks are fixed in parallel to the base plate; the first limit block and the second limit block form a rectangular area; the slider is slidably arranged in the enclosed rectangular area, and the sliding direction of the slider is parallel to the second limit block; each first limit block is provided with at least one adjusting bolt facing the slider, and the adjusting bolt can adjust and fix the position of the slider; the support column is vertically arranged on the slider; the fixed block is slidably mounted on the support column; the fixed block is also provided with a locking bolt, and the locking bolt can lock the fixed block on the support column; the micrometer is fixed on the fixed block.

[0010] The micrometer fixing assembly of this structure can fine-tune the position of the micrometer, which is convenient for adjusting the relative position of the micrometer and the gear fixing assembly, thereby improving the measurement accuracy. The horizontal direction is achieved by adjusting the position of the slider by adjusting the bolt, and the vertical direction is achieved by changing the position of the fixing block relative to the support column.

[0011] Preferably, there are two support columns, each of which corresponds to a locking bolt to ensure reliable and firm fixation and avoid measurement errors caused by loosening.

[0012] Preferably, the measuring head is a spherical measuring head; the measuring head is fixed to the end of the measuring rod of the micrometer by a fastening sleeve. The spherical measuring head is more accurate in testing, and the fastening sleeve is detachable and can easily replace the appropriate measuring head according to the size of the gear.

[0013] Beneficial effects: The portable sector gear span measuring device provided by the present invention can measure the span of sector gears which is difficult to measure by conventional measuring devices. It has a reliable structure, economical cost, convenient operation, small measurement error, good repeatability, and strong practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 is a front view of the gear fixing assembly;

[0016] Figure 3 is a top view of the gear fixing assembly;

[0017] Figure 4 It is the right view of the positioning frame;

[0018] Figure 5 It is a top view of the micrometer fixing assembly;

[0019] Figure 6 for Figure 5 Section view of the AA plane.

[0020] In the figure, the base plate 1, the gear fixing assembly 2, the micrometer fixing assembly 3, the micrometer 4, the measuring head 5, the fastening sleeve 6, the base 21, the elastic telescopic rod 22, the positioning frame 23, the first slot 231; the second slot 211, the notch 212, the guide column 232, the first limit block 31, the second limit block 32, the slider 33, the adjusting bolt 34, the support column 35, the fixing block 36, and the locking bolt 37. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be 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 invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] Example 1

[0027] A portable device for measuring the span of a sector gear. Figures 1 to 6 As shown, it includes a base plate 1, a gear fixing component 2, a micrometer fixing component 3, a micrometer 4, and a measuring head 5; the gear fixing component 2 and the micrometer fixing component 3 are relatively arranged on the base plate 1; the micrometer 4 is arranged on the micrometer fixing component 3, and the measuring rod of the micrometer 4 faces the gear fixing component 2; the measuring head 5 is arranged at the end of the measuring rod of the micrometer 4; the gear fixing component 2 includes a base 21, a group of elastic telescopic rods 22, and a positioning frame 23; the base 21 is fixed on the base plate 1; the positioning frame 23 is connected to the base 21 by the elastic telescopic rods 22, and the positioning frame 23 is located on a side close to the micrometer fixing component 3; a first card slot 231 is opened on the positioning frame 23 in the vertical direction; a second card slot 211 is opened on the base 21 in the vertical direction; and the first card slot 231 is arranged opposite to the second card slot 211; a notch 212 for accommodating a gear is also provided at a position on the base 21 opposite to the positioning frame 23.

[0028] In this embodiment, a group of guide posts 232 are fixed on the positioning frame 23 , and the guide posts 232 are slidably disposed in the base 21 .

[0029] In this embodiment, the dial gauge fixing assembly 3 includes a pair of first limit blocks 31, a pair of second limit blocks 32, a slider 33, an adjusting bolt 34, a support column 35, a fixing block 36, and a locking bolt 37; the pair of first limit blocks 31 are fixed in parallel to the base plate 1; the pair of second limit blocks 32 are fixed in parallel to the base plate 1; the first limit blocks 31 and the second limit blocks 32 enclose a rectangular area; the slider 33 is slidably arranged in the enclosed rectangular area, and the sliding direction of the slider 33 is parallel to the second limit block 32; each first limit block 31 is provided with at least one adjusting bolt 34 facing the slider 33, and the adjusting bolt 34 can adjust and fix the position of the slider 33; the support column 35 is vertically arranged on the slider 33; the fixing block 36 is slidably mounted on the support column 35; the fixing block 36 is also provided with a locking bolt 37, and the locking bolt 37 can lock the fixing block 36 on the support column 35; the dial gauge 4 is fixed on the fixing block 36.

[0030] In this embodiment, the measuring head 5 is fixed to the end of the measuring rod of the micrometer 4 by a fastening sleeve 6 .

[0031] Example 2

[0032] A portable device for measuring the span of a sector gear. Figures 1 to 6 As shown, it includes a base plate 1, a gear fixing component 2, a micrometer fixing component 3, a micrometer 4, and a measuring head 5; the gear fixing component 2 and the micrometer fixing component 3 are relatively arranged on the base plate 1; the micrometer 4 is arranged on the micrometer fixing component 3, and the measuring rod of the micrometer 4 faces the gear fixing component 2; the measuring head 5 is arranged at the end of the measuring rod of the micrometer 4; the gear fixing component 2 includes a base 21, a group of elastic telescopic rods 22, and a positioning frame 23; the base 21 is fixed on the base plate 1; the positioning frame 23 is connected to the base 21 by the elastic telescopic rods 22, and the positioning frame 23 is located on a side close to the micrometer fixing component 3; a first card slot 231 is opened on the positioning frame 23 in the vertical direction; a second card slot 211 is opened on the base 21 in the vertical direction; and the first card slot 231 is arranged opposite to the second card slot 211; a notch 212 for accommodating a gear is also provided at a position on the base 21 opposite to the positioning frame 23.

[0033] In this embodiment, both the first slot 231 and the second slot 211 are V-shaped slots.

[0034] In this embodiment, the base 21 is L-shaped.

[0035] In this embodiment, a group of guide posts 232 are fixed on the positioning frame 23 , and the guide posts 232 are slidably disposed in the base 21 .

[0036] In this embodiment, the dial gauge fixing assembly 3 includes a pair of first limit blocks 31, a pair of second limit blocks 32, a slider 33, an adjusting bolt 34, a support column 35, a fixing block 36, and a locking bolt 37; the pair of first limit blocks 31 are fixed in parallel to the base plate 1; the pair of second limit blocks 32 are fixed in parallel to the base plate 1; the first limit blocks 31 and the second limit blocks 32 enclose a rectangular area; the slider 33 is slidably arranged in the enclosed rectangular area, and the sliding direction of the slider 33 is parallel to the second limit block 32; each first limit block 31 is provided with at least one adjusting bolt 34 facing the slider 33, and the adjusting bolt 34 can adjust and fix the position of the slider 33; the support column 35 is vertically arranged on the slider 33; the fixing block 36 is slidably mounted on the support column 35; the fixing block 36 is also provided with a locking bolt 37, and the locking bolt 37 can lock the fixing block 36 on the support column 35; the dial gauge 4 is fixed on the fixing block 36.

[0037] In this embodiment, there are two support columns 35 , and each support column 35 corresponds to a locking bolt 37 .

[0038] In this embodiment, the measuring head 5 is a spherical measuring head.

[0039] In this embodiment, the measuring head 5 is fixed to the end of the measuring rod of the micrometer 4 by a fastening sleeve 6 .

[0040] The above are only preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principles of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A portable sector gear span measuring device, characterized in that: The invention comprises a base plate (1), a gear fixing assembly (2), a dial gauge fixing assembly (3), a dial gauge (4), and a measuring head (5); the gear fixing assembly (2) and the dial gauge fixing assembly (3) are arranged on the base plate (1) relative to each other; the dial gauge (4) is arranged on the dial gauge fixing assembly (3), and the measuring rod of the dial gauge (4) faces the gear fixing assembly (2); the measuring head (5) is arranged at the end of the measuring rod of the dial gauge (4); the gear fixing assembly (2) comprises a base (21), a group of elastic telescopic rods (22), and a positioning frame (23); the base (21) is fixed on the bottom plate (1); the positioning frame (23) is connected to the base (21) by the elastic telescopic rod (22), and the positioning frame (23) is located on a side close to the dial gauge fixing component (3); a first slot (231) is provided on the positioning frame (23) in a vertical direction; a second slot (211) is provided on the base (21) in a vertical direction; and the first slot (231) and the second slot (211) are arranged opposite to each other; a notch (212) capable of accommodating a gear is also provided on the base (21) at a position opposite to the positioning frame (23); The first card slot (231) and the second card slot (211) are both V-shaped slots; A group of guide pillars (232) are also fixed on the positioning frame (23), and the guide pillars (232) are slidably arranged in the base (21); The dial gauge fixing assembly (3) comprises a pair of first limit blocks (31), a pair of second limit blocks (32), a slider (33), an adjusting bolt (34), a supporting column (35), a fixing block (36), and a locking bolt (37); the pair of first limit blocks (31) are fixed in parallel to the base plate (1); the pair of second limit blocks (32) are fixed in parallel to the base plate (1); the first limit blocks (31) and the second limit blocks (32) enclose a rectangular area; the slider (33) is slidably disposed in the enclosed rectangular area, and the sliding direction of the slider (33) is aligned with the sliding direction of the second limit blocks (32). The limiting blocks (32) are parallel; each first limiting block (31) is provided with at least one adjusting bolt (34) facing the sliding block (33), and the adjusting bolt (34) is capable of adjusting and fixing the position of the sliding block (33); the supporting column (35) is vertically arranged on the sliding block (33); the fixing block (36) is slidably sleeved on the supporting column (35); the fixing block (36) is also provided with a locking bolt (37), and the locking bolt (37) is capable of locking the fixing block (36) on the supporting column (35); the micrometer (4) is fixed on the fixing block (36); The measuring head (5) is a spherical measuring head; Before testing, a pin is used for zero calibration, the positioning frame (23) is opened, the pin is clamped between the first slot (231) and the second slot (211), and then the measuring head (5) is brought into contact with the pin for zero calibration; During the test, the positioning frame (23) is opened to clamp the gear to be tested between the first clamping groove (231) and the second clamping groove (211), and then the measuring head (5) is brought into full contact with the tooth groove of the gear to be tested, and the value of the micrometer (4) is read. Then, the gear is rotated and the other tooth grooves are tested in the same way.

2. The portable sector gear span measuring device according to claim 1, characterized in that: The base (21) is L-shaped.

3. The portable sector gear span measuring device according to claim 1, characterized in that: There are two support columns (35), and each support column (35) corresponds to a locking bolt (37).

4. The portable sector gear span measuring device according to claim 1, characterized in that: The measuring head (5) is fixed to the end of the measuring rod of the micrometer (4) by a fastening sleeve (6).

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