CN112629464A - Method for precisely detecting wall thickness of small-size double-sided V-shaped groove - Google Patents
Method for precisely detecting wall thickness of small-size double-sided V-shaped groove Download PDFInfo
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- CN112629464A CN112629464A CN202011445779.XA CN202011445779A CN112629464A CN 112629464 A CN112629464 A CN 112629464A CN 202011445779 A CN202011445779 A CN 202011445779A CN 112629464 A CN112629464 A CN 112629464A
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- shaped groove
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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Abstract
The invention relates to a method for precisely detecting the wall thickness of a small-sized double-sided V-shaped groove, which is characterized in that corresponding conical tip pins are respectively processed according to the sizes of two V-shaped grooves; one conical tip pin is fixed on the base through a pin hole, and the other conical tip pin is connected with the dial indicator through the pin hole; placing the part to be measured at the two conical tips, and measuring the actual wall thickness dimension of the V-shaped groove of the part through the reading of a dial indicator; the wall thickness of the whole length direction double-sided V-shaped groove can be detected by moving the base. The wall thickness detection of the narrow V-shaped groove can be realized, and the detection precision is high; the detection can be carried out only by the fact that the angle of the V-shaped groove, the conical tip round angle and the conical tip pin are the same, and the detection is irrelevant to other sizes of the V-shaped groove such as groove width and groove depth, and the universality is high; the wall thickness detection of the double-sided V-shaped grooves with different sizes can be realized only by manufacturing different V-shaped conical tip pins according to different angles and conical tip fillets, and the double-sided V-shaped groove wall thickness detection device is low in cost and high in efficiency. And the lower conical tip pin is eliminated, so that the device can be suitable for wall thickness detection of a single-face V-shaped groove structure.
Description
Technical Field
The invention belongs to the technical field of wall thickness detection, and particularly relates to a method for precisely detecting the wall thickness of a small-size double-sided V-shaped groove, in particular to a method for precisely detecting the structure of a small-size double-sided V-shaped groove with root fillets smaller than R0.5mm and groove width smaller than 2 mm.
Background
The double-sided V-shaped groove structure is shown in figure 1 and is mainly used for bending sheets and other components with certain mechanical property requirements. Taking the bending sheet as an example, the wall thickness of the groove bottom directly affects the breaking angle of the part, so the bending sheet has a strict precision requirement and is mostly controlled as a key characteristic and an important characteristic in a component.
For the detection of the wall thickness dimension, the current method generally adopts an ultrasonic thickness gauge, a caliper with a meter and the like. However, the measuring head of the ultrasonic thickness gauge has large size and cannot be placed in a narrow groove for measurement; the caliper with the meter can stretch into the V-shaped groove, but the jaw has a width and cannot stretch to the bottom of the groove to measure, the actual size of the measurement result is large, the angle of the V-shaped groove is smaller, the root fillet is smaller, and the error is larger.
Disclosure of Invention
The invention provides a method for precisely detecting the wall thickness of a small-size double-sided V-shaped groove, which aims to solve the technical problems that: .
In order to solve the technical problems, the invention provides a method for precisely detecting the wall thickness of a small-size double-sided V-shaped groove, which is characterized in that corresponding conical tip pins are respectively processed according to the sizes of the two V-shaped grooves; one conical tip pin is fixed on the base through a pin hole, and the other conical tip pin is connected with the dial indicator through the pin hole; placing the part to be measured at the two conical tips, and measuring the actual wall thickness dimension of the V-shaped groove of the part through the reading of a dial indicator; the wall thickness of the whole length direction double-sided V-shaped groove can be detected by moving the base.
Has the advantages that:
(1) the wall thickness detection of the narrow V-shaped groove can be realized, and the detection precision is high;
(2) the detection can be carried out only by the fact that the angle of the V-shaped groove, the conical tip round angle and the conical tip pin are the same, and the detection is irrelevant to other sizes of the V-shaped groove such as groove width and groove depth, and the universality is high;
(3) the wall thickness detection of the double-sided V-shaped grooves with different sizes can be realized only by manufacturing different V-shaped conical tip pins according to different angles and conical tip fillets, and the double-sided V-shaped groove wall thickness detection device is low in cost and high in efficiency.
(4) The method is suitable for wall thickness detection of a single-side V-shaped groove structure by eliminating a lower conical tip pin, and the detection method has strong adaptability;
(5) the process method is simple and reliable, convenient to implement, strong in universality and easy to popularize and use.
Drawings
FIG. 1: a schematic structural diagram of a double-sided V-shaped groove;
FIG. 2: the structural schematic diagram of the double-sided V-shaped groove wall thickness detection tool;
FIG. 3: a schematic of a typical taper pin.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
The invention provides a method for precisely detecting the wall thickness of a small-size double-sided V-shaped groove, which is suitable for a small-size double-sided V-shaped groove structure with root fillets smaller than R0.5mm and groove width smaller than 2mm and is characterized by being realized by a set of detection tools.
The detection tool mainly comprises a base (1), a fixed block (2), a lower conical tip pin (3), an upper conical tip pin (5), a dial indicator (6), a longitudinal slide block (7) and a transverse slide block (8);
a standard T-shaped groove is processed on the base and is used for being connected with the fixed block and the transverse sliding block; a pin hole is processed on the fixing block and is used for being fixedly connected with one end of the lower conical tip pin, and the other end of the lower conical tip pin is a V-shaped conical tip; the dial indicator is fixedly arranged on the longitudinal sliding block, one end of the upper conical tip pin is a V-shaped conical tip, the other end of the upper conical tip pin is a pin shaft, a pin hole is machined in the pin shaft end, and the pin shaft penetrates through the longitudinal sliding block to be fixedly connected with a measuring head at the bottom of the dial indicator; the longitudinal sliding block is arranged on the transverse sliding block, so that the position of a gauge head can be adjusted, and wall thickness detection of V-shaped grooves of different parts and positions can be completed.
In the whole detection tool, the taper pin is required to be independently processed according to specific parts, and the rest parts are kept unchanged. The specific structure of the detection tool is shown in fig. 2.
The method specifically comprises the following steps:
(1) taper pin processing
The conical tip pin consists of a pin shaft and a conical tip. The pin shaft end has a fixed size which is consistent with the size of a pin hole on the detection tool; the V-shaped conical tip needs to be processed according to the angle and the size of a V-shaped groove of a part so as to ensure that the V-shaped groove and the V-shaped conical tip can be attached in the detection process.
The tapered pin of the exemplary part is shown in fig. 3.
(2) Zero setting of dial indicator
And adjusting the height of the dial indicator to ensure that the conical tips of the upper conical tip pin and the lower conical tip pin just touch each other, and setting the reading of the dial indicator at the moment to be 0.
(3) Mounting a part to be tested
And moving the transverse sliding block to move the dial indicator away, placing the V-shaped groove of the part to be measured at the tip part of the lower conical tip pin, and properly supporting the tail end of the part to keep the part balanced.
(4) Wall thickness detection
And moving the sliding block, and placing the upper conical tip at the end part of the dial indicator in the V-shaped groove on the part. And at the moment, the reading of the dial indicator is the wall thickness of the V-shaped groove of the part to be measured.
According to the invention, corresponding conical tip pins are respectively processed according to the sizes of the two V-shaped grooves; one conical tip pin is fixed on the base through a pin hole, and the other conical tip pin is connected with the dial indicator through the pin hole. And placing the part to be measured at the two conical tips, and measuring the actual wall thickness of the V-shaped groove of the part through the reading of the dial indicator. The wall thickness of the whole length direction double-sided V-shaped groove can be detected by moving the base.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method for precisely detecting the wall thickness of a small-size double-sided V-shaped groove is characterized in that corresponding conical tip pins are respectively processed according to the sizes of two V-shaped grooves; one conical tip pin is fixed on the base through a pin hole, and the other conical tip pin is connected with the dial indicator through the pin hole; placing the part to be measured at the two conical tips, and measuring the actual wall thickness dimension of the V-shaped groove of the part through the reading of a dial indicator; the wall thickness of the whole length direction double-sided V-shaped groove can be detected by moving the base.
2. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove according to claim 1, wherein the method comprises the following steps: the small-size double-sided V-shaped groove is of a structure with root fillets smaller than R0.5mm and groove width smaller than 2 mm.
3. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove according to claim 1, wherein the method comprises the following steps: the adopted detection tool mainly comprises a base (1), a fixed block (2), a lower conical tip pin (3), an upper conical tip pin (5), a dial indicator (6), a longitudinal slide block (7) and a transverse slide block (8); a standard T-shaped groove is processed on the base and is used for being connected with the fixed block and the transverse sliding block; a pin hole is processed on the fixing block and is used for being fixedly connected with one end of the lower conical tip pin, and the other end of the lower conical tip pin is a V-shaped conical tip; the dial indicator is fixedly arranged on the longitudinal sliding block, one end of the upper conical tip pin is a V-shaped conical tip, the other end of the upper conical tip pin is a pin shaft, a pin hole is machined in the pin shaft end, and the pin shaft penetrates through the longitudinal sliding block to be fixedly connected with a measuring head at the bottom of the dial indicator; the longitudinal slide block is arranged on the transverse slide block, so that the adjustment of the position of the gauge head can be realized.
4. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove according to claim 1, wherein the method comprises the following steps: the taper pin consists of a pin shaft and a taper point, wherein the pin shaft end has a fixed size which is consistent with the size of a pin hole on the detection tool; the cone tip is of a V-shaped structure.
5. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove according to claim 5, wherein the method comprises the following steps: the cone tip is processed according to the angle and the size in part V type groove to guarantee that V type groove and V type cone tip can laminate in the testing process.
6. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove as claimed in claim 3, wherein the method comprises the following steps: before testing, the height of the dial indicator is adjusted to ensure that the conical tips of the upper conical tip pin and the lower conical tip pin are just touched, and the reading of the dial indicator at the moment is set to be 0.
7. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove according to claim 6, wherein the method comprises the following steps: after the dial indicator is adjusted, the transverse sliding block is moved to move the dial indicator away, the V-shaped groove of the part to be measured is placed at the tip of the lower conical tip pin, and the tail end of the part is properly supported to keep the part balanced.
8. The method for precisely detecting the wall thickness of the small-sized double-sided V-shaped groove according to claim 7, wherein the method comprises the following steps: and moving the sliding block, placing an upper conical tip at the end part of the dial indicator in the V-shaped groove on the part, and taking the reading of the dial indicator as the wall thickness of the V-shaped groove of the part to be measured.
9. The method for precisely detecting the wall thickness of the small-size double-sided V-shaped groove as claimed in claim 3, wherein the method comprises the following steps: and the lower conical tip pin is eliminated, so that the device can be suitable for wall thickness detection of a single-face V-shaped groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011445779.XA CN112629464A (en) | 2020-12-08 | 2020-12-08 | Method for precisely detecting wall thickness of small-size double-sided V-shaped groove |
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| CN202011445779.XA CN112629464A (en) | 2020-12-08 | 2020-12-08 | Method for precisely detecting wall thickness of small-size double-sided V-shaped groove |
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| CN112629464A true CN112629464A (en) | 2021-04-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205482775U (en) * | 2016-01-28 | 2016-08-17 | 郑州磨料磨具磨削研究所有限公司 | Thickness measurement device based on two amesdials |
| CN205957888U (en) * | 2016-08-25 | 2017-02-15 | 天津力神电池股份有限公司 | Lithium ion battery's head verifying attachment |
| CN207300091U (en) * | 2017-10-20 | 2018-05-01 | 东莞市银辰精密光电股份有限公司 | A kind of V-type fast positioning detection device |
| CN109470118A (en) * | 2018-11-23 | 2019-03-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of multi-functional wall thickness measuring appliance and measurement method |
| CN110470192A (en) * | 2019-08-22 | 2019-11-19 | 北京星航机电装备有限公司 | A kind of tooling for V-groove depth direction size detection |
-
2020
- 2020-12-08 CN CN202011445779.XA patent/CN112629464A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205482775U (en) * | 2016-01-28 | 2016-08-17 | 郑州磨料磨具磨削研究所有限公司 | Thickness measurement device based on two amesdials |
| CN205957888U (en) * | 2016-08-25 | 2017-02-15 | 天津力神电池股份有限公司 | Lithium ion battery's head verifying attachment |
| CN207300091U (en) * | 2017-10-20 | 2018-05-01 | 东莞市银辰精密光电股份有限公司 | A kind of V-type fast positioning detection device |
| CN109470118A (en) * | 2018-11-23 | 2019-03-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of multi-functional wall thickness measuring appliance and measurement method |
| CN110470192A (en) * | 2019-08-22 | 2019-11-19 | 北京星航机电装备有限公司 | A kind of tooling for V-groove depth direction size detection |
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Application publication date: 20210409 |
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