CN115127420A - Camshaft wall thickness detection tool - Google Patents
Camshaft wall thickness detection tool Download PDFInfo
- Publication number
- CN115127420A CN115127420A CN202210847362.9A CN202210847362A CN115127420A CN 115127420 A CN115127420 A CN 115127420A CN 202210847362 A CN202210847362 A CN 202210847362A CN 115127420 A CN115127420 A CN 115127420A
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- CN
- China
- Prior art keywords
- detection
- camshaft
- core rod
- wall thickness
- percentage table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
Abstract
The invention discloses a camshaft wall thickness detection tool, which consists of a base (1), a detection core rod (7), a support rod (5) and dial indicators, wherein the bottom of the support rod (5) is fixedly connected with the base (1), the detection core rod (7) is arranged on a bearing (8), 1-4 dial indicators are arranged on the support rod (5), 1-4 dial indicators are respectively and fixedly connected with the support rod (5), 1-4 dial indicators are uniformly distributed on the support rod (5), the contacts of 1-4 dial indicators keep a specified distance with the detection core rod (7), the lower end of the detection core rod (7) is provided with a 60-degree conical surface, and by adopting the detection tool, the thickness detection of the side wall of an inner hole of a camshaft can be accurately and rapidly completed, the detection precision and the detection efficiency are greatly improved, and the difficult problem of poor coaxiality detection of the inner hole of the camshaft is solved, the purchasing cost of a wall thickness detection instrument is saved for enterprises; the method has high detection precision and simple operation, and is easier for new operators and inspectors to learn the detection method.
Description
Technical Field
The invention relates to a camshaft wall thickness detection tool, in particular to a detection tool special for detecting the thickness from the side wall of an inner hole of a shaft to the surface of an outer circle.
Background
The existing camshaft wall thickness detection generally adopts that a core rod matched with an inner hole of a camshaft is inserted into an inner hole of a workpiece, if the core rod can be completely inserted into the inner hole of the workpiece, the wall thickness of the inner hole of the workpiece is qualified, if the core rod cannot be completely inserted into the inner hole, the wall thickness of the inner hole of the workpiece is unqualified, although whether the wall thickness is qualified or not can be quickly detected, the detection error is very large, and the amount of out-of-tolerance cannot be detected for debugging in processing; if a wall thickness detection instrument is adopted for detection, the thickness measurement is carried out by the instrument according to the ultrasonic pulse reflection principle, when ultrasonic pulses transmitted by a probe reach a material interface through a detected object, the pulses are reflected back to the probe to determine the thickness of the detected material by accurately measuring the propagation time of the ultrasonic waves in the material, although the wall thickness value of a workpiece can be detected, different parameters need to be adjusted for workpieces with different wall thicknesses and materials, the requirement on the skill of an operator is high, the detection efficiency is low, and enterprises need to purchase the wall thickness detection instrument, so that the capital investment of the enterprises is increased, and the enterprise cost is increased.
Disclosure of Invention
The invention aims to provide a camshaft wall thickness detection tool, which overcomes the defect of the existing detection capability, realizes one-time detection, completes the detection work of the camshaft wall thickness, improves the detection efficiency, reduces the purchase cost of a detection instrument, improves the product quality stability and reduces the detection error.
In order to achieve the purpose, the tool for detecting the wall thickness of the camshaft consists of a base, a detection core rod, a support rod and dial indicators, wherein the detection core rod and the support rod are respectively arranged at two sides of the base, the bottom of the support rod is fixedly connected with the base, two bearings are arranged in the base, the detection core rod is arranged on the bearings, 1-4 dial indicators are arranged on the support rod, 1-4 dial indicators are fixedly connected with the support rod, 1-4 dial indicators are uniformly distributed on the support rod, the contact of 1-4 dial indicators keeps a specified distance with the detection core rod, the upper end of the detection core rod is slightly larger than the lower end, and a conical guide angle is arranged, 2-4 open slots are longitudinally arranged at the upper end of the detection core rod, the diameter of the upper end of the detection core rod is slightly larger than the aperture of an inner hole of the camshaft in a normal state, and the lower end face of the detection core rod is a conical surface inclined downwards by 60 degrees.
Compared with the conventional detection method, the camshaft wall thickness detection tool has the following excellent effects.
The tool for detecting the wall thickness of the camshaft adopts an integrated assembly structure, detects the matching of the core rod and the dial indicator, after the detection core rod is inserted into the axial inner hole of the camshaft, the upper end of the detection core rod is contracted to be capable of passing through the inner hole through the arranged open slot, after the surface of the central hole of the end face of the camshaft is attached to the conical surface of the lower end of the detection core rod by 60 degrees, adjusting the contact of each dial indicator to contact with the outer arc surface of the camshaft, adjusting the dial indicators to enable the pointers of the dial indicators to point to 0, then the camshaft is rotated by 360 degrees, the numerical value of each dial indicator is observed, the error range of the camshaft wall thickness is obtained through calculation, the thickness detection of the side wall of the inner hole of the camshaft can be accurately and rapidly completed by adopting the detection tool, the detection precision and the detection efficiency are greatly improved, the problem that the coaxiality of the inner hole of the camshaft is not easy to detect is solved, and the purchase cost of a wall thickness detection instrument is saved for enterprises; the method has high detection precision and simple operation, and is easier for new operators and inspectors to learn the detection method.
Drawings
FIG. 1 is a schematic view of a camshaft wall thickness detection tool of the present invention.
Wherein: 1. the device comprises a base, 2 dial indicators A, 3 dial indicators B, 4 dial indicators C, 5 support rods, 6 dial indicators D, 7 detection core rods and 8 bearings.
Detailed Description
The camshaft wall thickness detection tool of the present invention will be described in further detail with reference to the accompanying drawings.
The camshaft wall thickness detection tool shown in fig. 1 comprises a base 1, a detection core rod 7, a support rod 5 and a dial indicator, wherein the detection core rod 7 and the support rod 5 are respectively arranged at two sides of the base 1, the bottom of the support rod 5 is fixedly connected with the base 1, two bearings 8 are arranged in the base 1, the detection core rod 7 is arranged on the bearings 8, the support rod 5 is provided with a dial indicator A2, a dial indicator B3, a dial indicator C4 and a dial indicator D6, the dial indicator A2, the dial indicator B3, the dial indicator C4 and the dial indicator D6 are respectively and fixedly connected with the support rod 5, the dial indicator A2, the dial indicator B3, the dial indicator C4 and the dial indicator D6 are uniformly distributed on the support rod 5, the distances between contacts of the dial indicator A2, the dial indicator B3, the dial indicator C4 and the dial indicator D6 on the support rod 5 are the same, the contacts of the dial indicator A2, the dial indicator B3, the dial indicator C4 and the dial indicator D6 keep a specified distance from the detection core rod 7, and the lower end of the detection core rod 7 is slightly larger than the lower end, and a conical guide angle is arranged, 2-4 open slots are arranged at the upper end of the detection core rod 7, the diameter of the upper end of the detection core rod 7 is slightly larger than the bore diameter of the inner bore of the camshaft in a normal state, and the lower end face of the detection core rod 7 is a conical surface inclined downwards by 60 degrees.
Firstly, uniformly adjusting the distance between a dial indicator A2, a dial indicator B3, a dial indicator C4 and a dial indicator D6 and a detection core rod 7 for a certain distance to ensure that the head of the dial indicator is not touched when the camshaft is placed in the detection core rod 7, the upper end of the detection core rod 7 is designed into a guide angle and open slot structure, the end of the camshaft with an inner hole is slightly placed into the bottom part of the detection core rod 7 in a chamfer way until the center hole of the end face of the camshaft is attached to a 60-degree conical surface at the lower end of the detection core rod 7, adjusting the positions of 4 dial indicators to ensure that the head is in surface contact with the journal to be detected, adjusting the degrees of the dial indicators A2, B3, C4 and D6 to be 0, rotating the camshaft for one circle to observe the degrees of the dial indicators, and calculating the wall thickness of the camshaft to finish the wall thickness detection.
Claims (3)
1. A camshaft wall thickness detection tool comprises a base (1), a detection core rod (7), a support rod (5) and a dial indicator, its characterized in that detects plug (7) and bracing piece (5) and sets up respectively in the both sides of base (1), the bottom and base (1) fixed connection of bracing piece (5), base (1) inside is equipped with two bearings (8), it installs on bearing (8) to detect plug (7), set up percentage table A (2) on bracing piece (5), percentage table B (3), percentage table C (4), percentage table D (6), percentage table A (2), percentage table B (3), percentage table C (4), percentage table D (6) respectively with bracing piece (5) fixed connection, percentage table A (2), percentage table B (3), percentage table C (4), percentage table D (6) evenly distributed on bracing piece (5).
2. The tool for detecting the wall thickness of the camshaft according to claim 1, wherein the upper end of the detection core rod (7) is slightly larger than the lower end and is provided with a conical guide angle, 2-4 open slots are arranged at the upper end of the detection core rod (7), and the diameter of the upper end of the detection core rod (7) is slightly larger than the bore diameter of the inner bore of the camshaft.
3. The camshaft wall thickness detection tool according to claim 1, wherein the lower end face of the detection core rod (7) is provided as a conical surface inclined downward by 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210847362.9A CN115127420A (en) | 2022-07-19 | 2022-07-19 | Camshaft wall thickness detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210847362.9A CN115127420A (en) | 2022-07-19 | 2022-07-19 | Camshaft wall thickness detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115127420A true CN115127420A (en) | 2022-09-30 |
Family
ID=83383029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210847362.9A Pending CN115127420A (en) | 2022-07-19 | 2022-07-19 | Camshaft wall thickness detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115127420A (en) |
-
2022
- 2022-07-19 CN CN202210847362.9A patent/CN115127420A/en active Pending
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Qiming Inventor after: Zhu Zhentao Inventor after: Yu Tian Inventor after: Ji Jinqiang Inventor after: Xu Daoguang Inventor before: Cheng Zhisheng Inventor before: Zhu Zhentao Inventor before: Yang Qiming Inventor before: Yu Tian Inventor before: Ji Jinqiang Inventor before: Xu Daoguang |
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| CB03 | Change of inventor or designer information |