Adjustable caliper gauge for inspecting common cross-tooth normal of gear

Abstract

The invention discloses an adjustable caliper gauge for inspecting a common cross-tooth normal of a gear, which comprises a fixed caliper gauge body, an upper movable surface measuring block and a lower movable surface measuring block, and is characterized in that the upper movable surface measuring block and the lower movable surface measuring block are arranged on the fixed caliper gauge body in a sliding manner; the left side of the square plate extends upwards to form an upper reference block, the left side of the square plate extends downwards to form a lower reference block, a through groove is formed in the middle of the right side of the square plate, an upper sliding part is formed between the through groove and the upper edge of the right side of the square plate, and a lower sliding part is formed between the through groove and the lower edge of the right side of the square plate. According to the cross-tooth common normal dimension and tolerance, an inner diameter micrometer or a smooth limit gauge block is adopted to correct the dimension of the adjustable caliper, the distance L1 and the distance L2 of the upper movable surface measuring block and the lower movable surface measuring block are adjusted and locked, when the locked limit dimension is correct, the adjustable caliper can be used for product dimension detection, and the adjustable caliper has the advantages of being simple in structure, convenient to operate and wide in application range.

Description

Technical Field

[0001] The invention relates to an adjustable caliper for checking a gear span normal line. Background Art

[0002] In the manufacturing of machine parts, the detection of splines and gears generally adopts the detection method of cross-tooth normal or M value, such as Figure 1 As shown in the figure, the linear dimension inspection of the tooth-cross normal line Wn or M value (cross-rod distance) generally corresponds to the use of a tooth-cross normal line micrometer combined with a measuring rod or a tooth-cross normal line pallet inspection. The tooth-cross normal line micrometer combined with a measuring rod is less efficient and is mainly suitable for random inspections. While the tooth-cross normal line pallet inspection is efficient, each pallet can only inspect and accept a single tooth-cross normal line dimension, resulting in poor adaptability and relatively high cost. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides an adjustable caliper for inspecting the gear cross-tooth normal line with a simple structure and high efficiency.

[0004] The technical solution of the present invention to solve the above technical problems is: an adjustable caliper for inspecting the gear cross-tooth common normal line, comprising a fixed caliper body, an upper movable measuring surface block, and a lower movable measuring surface block, wherein the upper movable measuring surface block and the lower movable measuring surface block are slidably arranged on the fixed caliper body.

[0005] The above-mentioned adjustable caliper for inspecting the common normal line of the gear across the teeth, the fixed caliper body is a square plate, an upper reference block extends upward from the left side of the square plate, a lower reference block extends downward from the left side of the square plate, a through slot is opened in the middle of the right side of the square plate, an upper sliding part is formed between the through slot and the upper edge of the right side of the square plate, and a lower sliding part is formed between the through slot and the lower edge of the right side of the square plate.

[0006] The above-mentioned adjustable caliper for inspecting the gear cross-tooth normal line, the upper movable measuring surface block includes an upper sliding block, the upper sliding block is slidably set on the upper sliding part, a first threaded hole is opened at the bottom of the upper sliding block, the first locking screw passes through the first threaded hole to lock the upper sliding block and the fixed caliper body, an upper reference plate is fixedly set on the top of the upper sliding block, and the distance between the upper reference plate and the upper reference block is used as the lower limit of the cross-tooth normal line size.

[0007] The above-mentioned adjustable caliper for inspecting the gear cross-tooth normal line, the lower movable measuring surface block includes a lower sliding block, the lower sliding block is slidably set on the lower sliding part, a second threaded hole is opened at the bottom of the lower sliding block, the second locking screw passes through the second threaded hole to lock the lower sliding block and the fixed caliper body, a lower reference plate is fixedly set on the top of the lower sliding block, and the distance between the lower reference plate and the lower reference block serves as the upper limit of the cross-tooth normal line size.

[0008] The above-mentioned adjustable caliper for inspecting the gear span normal line is provided with scales on both the upper sliding part and the lower sliding part.

[0009] The beneficial effects of the present invention are as follows: when in use, the adjustable caliper is calibrated according to the normal line size and tolerance across the teeth using an inside micrometer or a smooth limit gauge block, and the measuring distances L1 (upper limit of the normal line size across the teeth) and L2 (lower limit of the normal line size across the teeth) of the upper and lower movable measuring surface blocks are adjusted. After the lower and upper limit values ​​of the normal line size across the teeth are adjusted, the two locking screws are tightened to lock the upper and lower limit sizes. After locking, L1 and L2 should be checked for changes. If there are changes, the limit size locking needs to be adjusted again. When the locked limit sizes are correct, the adjustable caliper can be used to detect product sizes. The adjustable caliper has the advantages of simple structure, easy operation and wide adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of linear dimension detection across the tooth normal Wn or M value.

[0011] Figure 2 It is a structural schematic diagram of the present invention.

[0012] Figure 3 for Figure 2 Magnified view of part A.

[0013] Figure 4 It is a structural diagram of a fixed caliper body.

[0014] Figure 5 This is a structural diagram of the upper active measuring surface block.

[0015] Figure 6 Schematic diagram of the structure of the first locking bolt.

[0016] Figure 7 Schematic diagram for size correction. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] like Figure 2-Figure 6 As shown, an adjustable caliper for inspecting the common normal line of a gear across a tooth comprises a fixed caliper body 1, an upper movable measuring surface block 2, and a lower movable measuring surface block 3. The upper movable measuring surface block 2 and the lower movable measuring surface block 3 are slidably arranged on the fixed caliper body 1.

[0019] The fixed caliper body 1 is a square plate 4, an upper reference block 5 extends upward from the left side of the square plate 4, a lower reference block 6 extends downward from the left side of the square plate 4, a through slot 7 is opened in the middle of the right side of the square plate 4, an upper sliding part 8 is formed between the through slot 7 and the upper edge of the right side of the square plate 4, and a lower sliding part 9 is formed between the through slot 7 and the lower edge of the right side of the square plate 4.

[0020] The upper movable measuring surface block 2 includes an upper sliding block 10, which can be slidably set on the upper sliding part 8. A first threaded hole 14 is opened at the bottom of the upper sliding block 10. The first locking screw 11 passes through the first threaded hole 14 to lock the upper sliding block 10 to the fixed caliper body 1. An upper reference plate 12 is fixedly set on the top of the upper sliding block 10. The distance between the upper reference plate 12 and the upper reference block 5 is used as the lower limit L2 of the cross-tooth normal size.

[0021] The lower movable measuring surface block 3 has the same structure as the upper movable measuring surface block 2. The lower movable measuring surface block 3 includes a lower sliding block, which can be slidably set on the lower sliding part 9. A second threaded hole is opened at the bottom of the lower sliding block. The second locking screw passes through the second threaded hole to lock the lower sliding block to the fixed caliper body 1. A lower reference plate is fixed on the top of the lower sliding block. The distance between the lower reference plate and the lower reference block 6 is used as the upper limit L1 of the cross-tooth normal size.

[0022] like Figure 3 As shown, the upper sliding portion 8 and the lower sliding portion 9 are both provided with scales 13 to facilitate quick and rough positioning of the upper movable measuring surface block 2 and the lower movable measuring surface block 3.

[0023] like Figure 7 As shown, when in use, according to the normal line size and tolerance across the teeth, use an inside micrometer or a smooth limit gauge block 14 to calibrate the size of the adjustable caliper, and adjust the measuring distances L1 (upper limit of the normal line size across the teeth) and L2 (lower limit of the normal line size across the teeth) of the upper and lower movable measuring surface blocks 3. After the lower and upper limits of the normal line size across the teeth are adjusted, tighten the two locking screws to lock the upper and lower limit sizes. After locking, check whether L1 and L2 have changed. If there is any change, adjust the limit size locking again. When the locked limit size is correct, the adjustable caliper can be used to detect product size.

Claims

1. An adjustable caliper for checking the normal line across the teeth of a gear, characterized by: The utility model comprises a fixed caliper body, an upper movable measuring surface block and a lower movable measuring surface block. The upper movable measuring surface block and the lower movable measuring surface block are slidably arranged on the fixed caliper body.

2. The adjustable caliper for checking the gear span normal line according to claim 1, characterized in that: The fixed caliper body is a square plate, an upper reference block extends upward from the left side of the square plate, a lower reference block extends downward from the left side of the square plate, a through slot is opened in the middle of the right side of the square plate, an upper sliding part is formed between the through slot and the upper edge of the right side of the square plate, and a lower sliding part is formed between the through slot and the lower edge of the right side of the square plate.

3. The adjustable caliper for checking the gear span normal line according to claim 2, characterized in that: The upper movable measuring surface block includes an upper sliding block, which can be slidably set on the upper sliding part. A first threaded hole is opened at the bottom of the upper sliding block. The first locking screw passes through the first threaded hole to lock the upper sliding block and the fixed caliper body. An upper reference plate is fixed on the top of the upper sliding block. The distance between the upper reference plate and the upper reference block is used as the lower limit of the cross-tooth normal size.

4. The adjustable caliper for checking the gear span normal line according to claim 3, characterized in that: The lower movable measuring surface block includes a lower sliding block, which can be slidably set on the lower sliding part. A second threaded hole is opened at the bottom of the lower sliding block. The second locking screw passes through the second threaded hole to lock the lower sliding block and the fixed caliper body. A lower reference plate is fixedly set on the top of the lower sliding block. The distance between the lower reference plate and the lower reference block serves as the upper limit of the cross-tooth common normal size.

5. The adjustable caliper for checking the gear span normal line according to claim 4, characterized in that: The upper sliding part and the lower sliding part are both provided with scales.

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