阅读说明：本技术 一种气动检测锥度角度的检具及检测方法 (Detection tool and detection method for pneumatically detecting taper angle ) 是由 刘星庆 莫勇 蔡吉良 杨庆 于 2019-10-24 设计创作，主要内容包括：本发明涉及一种气动检测锥度角度的检具及检测方法,检具包括检测装置和测量仪,检测装置与测量仪连接,检测装置包括基座,垫套和锥套,锥套设置在基座上,锥套具有锥形孔,锥形孔侧面设有气孔,气孔分别设置在锥形孔的上部和下部,气孔轴心线与被测锥面的母线垂直,垫套设置在锥套上方,垫套和锥套同轴设置,垫套具有通孔,通孔与锥形孔连通。本发明的一种气动检测锥度角度的检具及检测方法能够准确检测曲轴的锥度角度,便于判断产品是否合格；此外,能够加快检测速度,适用于批量检测,实现产品全检。(The invention relates to a pneumatic detection tool and a detection method for detecting taper angles, wherein the detection tool comprises a detection device and a measuring instrument, the detection device is connected with the measuring instrument, the detection device comprises a base, a cushion cover and a taper sleeve, the taper sleeve is arranged on the base and provided with a taper hole, air holes are formed in the side face of the taper hole and are respectively arranged at the upper part and the lower part of the taper hole, the axial lead of the air hole is perpendicular to a bus of a detected taper surface, the cushion cover is arranged above the taper sleeve, the cushion cover and the taper sleeve are coaxially arranged, the cushion cover is provided with a through hole, and the through hole is communicated with. The detection tool and the detection method for pneumatically detecting the taper angle can accurately detect the taper angle of the crankshaft, and are convenient for judging whether the product is qualified or not; in addition, the detection speed can be accelerated, the method is suitable for batch detection, and the full detection of products is realized.)

1. The utility model provides an utensil is examined to pneumatic detection tapering angle, a serial communication port, including detection device and measuring apparatu, detection device is connected with the measuring apparatu, and detection device includes the base, covers and the taper sleeve, and the taper sleeve sets up on the base, and the taper sleeve has the bell mouth, and the bell mouth side is equipped with the gas pocket, and the gas pocket sets up respectively in the upper portion and the lower part of bell mouth, and the gas pocket axial lead is perpendicular with the generating line of being surveyed the conical surface, and the cover sets up in the taper sleeve top, covers and the coaxial setting of taper sleeve, covers and has the through-hole, through-hole and.

2. The pneumatic detection tool for detecting the taper angle according to claim 1, wherein the tapered hole is provided with two sets of air holes, the two sets of air holes are symmetrically arranged, each set of air holes comprises an upper air hole and a lower air hole, and the upper air hole and the lower air hole are located on the same cross section.

3. The pneumatic detection tool for detecting the taper angle according to claim 2, wherein the air hole is a circular air hole with a diameter of 1 mm.

4. The pneumatic detection tool for detecting the taper angle according to claim 3, wherein the upper air hole and the lower air hole are arranged in an inclined manner, and the inclined direction is inclined from bottom to top.

5. The pneumatic detection tool for detecting the taper angle according to claim 1, wherein the detection tool comprises a standard part, and when the detection tool is calibrated, the standard part is inserted into the cushion cover and the taper sleeve, and the roughness of the standard part is less than Ra0.4.

6. The pneumatic detection tool for detecting the taper angle according to claim 1, wherein the base comprises a through hole, and the through hole is arranged corresponding to the taper hole.

7. The pneumatic detection tool for detecting the taper angle according to claim 1, wherein the base comprises a panel and a pad column, and the pad column is arranged at the bottom of the panel.

8. A detection method for pneumatically detecting a taper angle is characterized by comprising the following steps:

s100: inserting the product into the checking fixture, feeding air pressure formed by the taper sleeve and the conical surface of the product to be measured back to the measuring instrument through the left and right groups of air holes, and measuring the diameters of two truncated circles, namely the large end and the small end, of the conical surface of the product to be measured;

s200: the upper air hole and the lower air hole are in fixed lengths, and the diameters and the lengths of the large end and the small end of the product to be measured are calculated through a measuring instrument to obtain the taper angle of the product to be measured;

s300: according to a calculation formula of the taper angle:

9. The method for detecting the taper angle pneumatically according to claim 8, wherein the checking fixture is calibrated before the detection.

10. The method for detecting the taper angle pneumatically according to claim 9, wherein the checking tool is calibrated by the following steps:

a. inserting the standard part into a cushion cover and a taper sleeve, wherein the cushion cover is in clearance fit with the standard part and the product rod part;

b. calibrating the standard piece, and respectively calibrating the large diameter and the small diameter of the large standard piece and the small standard piece through a measuring instrument;

c. after the calibration step is completed, the standard part is inserted into the checking tool again, and if the indication value displayed by the measuring instrument is consistent with the indication value marked on the standard part, the calibration is qualified; and if not, repeating the step of calibrating the standard component until the display indication value is consistent with the indication value of the standard component.

Technical Field

The invention relates to the technical field of detection tools, in particular to a detection tool and a detection method for pneumatically detecting a taper angle.

Background

The gauge is a simple tool for controlling various sizes (such as aperture, space size and the like) of products by industrial production enterprises, improves the production efficiency and controls the quality, and is suitable for mass production of products, such as automobile parts, to replace professional measuring tools, such as smooth plug gauges, threaded plug gauges, outer diameter calipers and the like.

At present, when a crankshaft is machined, a main engine factory requires full detection of the taper angle of the crankshaft, and the existing detection method comprises the following steps: 1. in the existing first detection and process control of crankshaft taper, staff send crankshafts to a company metering room to detect taper angles by three coordinates, the detection period is long, and the detection is not suitable for batch detection; 2. in a workshop site, performing self-inspection on staff by using a taper fitting ring gauge, using red lead or blue lead, and detecting and judging whether the taper angle is qualified or not by using a color coating method; the method cannot detect a specific angle value, lacks accuracy and is poor in reproducibility.

Disclosure of Invention

The invention provides a detection tool and a detection method for pneumatically detecting a taper angle, which can detect a specific taper angle value, have high detection speed and are convenient to use, and aims to solve the problems in the prior art.

The following is a specific embodiment of the present invention.

The utility model provides an utensil is examined to pneumatic detection tapering angle, includes detection device and measuring apparatu, and detection device is connected with the measuring apparatu, and detection device includes the base, covers the cover and the taper sleeve, and the taper sleeve sets up on the base, and the taper sleeve has the bell mouth, and the bell mouth side is equipped with the gas pocket, and the gas pocket sets up respectively in the upper portion and the lower part of bell mouth, and the gas pocket axial lead is perpendicular with the generating line of the conical surface of being surveyed, and the cover sets up in the taper sleeve top, covers the cover and the coaxial setting of taper sleeve, covers the cover and has the through.

The following is an attached technical solution of the present invention.

Furthermore, the taper hole is provided with two groups of air holes, the two groups of air holes are symmetrically arranged, each group of air holes comprises an upper air hole and a lower air hole, and the upper air hole and the lower air hole are positioned on the same cross section.

Further, the air holes are circular air holes with the diameter of 1 mm.

Furthermore, the upper air hole and the lower air hole are obliquely arranged, and the oblique direction inclines from bottom to top.

Further, the gauge comprises a standard part, when the gauge is calibrated, the standard part is inserted into the cushion cover and the taper sleeve, and the roughness of the standard part is smaller than Ra0.4.

Further, the base comprises a through hole, and the through hole is arranged corresponding to the taper hole.

Further, the base comprises a panel and a cushion column, and the cushion column is arranged at the bottom of the panel.

A detection method for pneumatically detecting a taper angle comprises the following steps:

s100: inserting the product into the checking fixture, feeding air pressure formed by the taper sleeve and the conical surface of the product to be measured back to the measuring instrument through the left and right groups of air holes, and measuring the diameters of two truncated circles, namely the large end and the small end, of the conical surface of the product to be measured;

s200: the upper air hole and the lower air hole are in fixed lengths, and the diameters and the lengths of the large end and the small end of the product to be measured are calculated through a measuring instrument to obtain the taper angle of the product to be measured;

s300: according to a calculation formula of the taper angle:

and calculating the taper angle.

Furthermore, before detection, the checking fixture is firstly corrected.

Further, the checking fixture is checked in the following steps:

a. inserting the standard part into a cushion cover and a taper sleeve, wherein the cushion cover is in clearance fit with the standard part and the product rod part;

b. calibrating the standard piece, and respectively calibrating the large diameter and the small diameter of the large standard piece and the small standard piece through a measuring instrument;

c. after the calibration step is completed, the standard part is inserted into the checking tool again, and if the indication value displayed by the measuring instrument is consistent with the indication value marked on the standard part, the calibration is qualified; and if not, repeating the step of calibrating the standard component until the display indication value is consistent with the indication value of the standard component.

The invention has the technical effects that: the detection tool and the detection method for pneumatically detecting the taper angle can accurately detect the taper angle of the crankshaft, and are convenient for judging whether the product is qualified or not; in addition, the detection speed can be accelerated, the method is suitable for batch detection, and the full detection of products is realized.

Drawings

Fig. 1 is a schematic view of a gauge for pneumatically detecting a taper angle according to an embodiment of the present invention.

Fig. 2 is a schematic view of a detection apparatus according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a test device according to an embodiment of the present invention.

Fig. 4 is a schematic view of a drogue according to an embodiment of the invention.

Fig. 5 is a schematic illustration of a product of an embodiment of the invention.

Detailed Description

The essential features and advantages of the invention will be further explained below with reference to examples, but the invention is not limited to the examples listed.

As shown in fig. 1 to 5, the gauge for pneumatically detecting a taper angle of the present embodiment includes a detecting device 1 and a measuring instrument 2, and the detecting device 1 is connected to the measuring instrument 2. The detection device 1 comprises a base 11, a cushion cover 12 and a taper sleeve 13, wherein the taper sleeve 13 is arranged on the base 11, the taper sleeve 13 is provided with a taper hole 131, the side surface of the taper hole 131 is provided with an air hole 3, the air holes 3 are respectively arranged at the upper part and the lower part of the taper hole 131, and the axial lead of the air hole 3 is vertical to a bus of the detected taper surface 4. The cushion cover 12 is arranged above the taper sleeve 13, the cushion cover 12 and the taper sleeve 13 are coaxially arranged, the cushion cover 12 is provided with a through hole 121, and the through hole 121 is communicated with the taper hole 131. In the above technical solution, the product 10 is inserted into the detecting device 1 during detection, so that the detected conical surface 4 is located in the conical hole 131. The cushion cover 12 is used for positioning the end face of a product and guiding the excircle, and the taper sleeve 13 is used for controlling the gap between the product and the air hole 3. When the product is measured, air pressure is formed between the measured conical surface 4 and the conical sleeve 13 of the product, and calculation and display of measurement indication values are performed after air pressure feedback is performed through the measuring instrument. In this embodiment, the measuring instrument is a pneumatic measuring instrument. Among the above-mentioned technical scheme, through the atmospheric pressure that detects between taper sleeve and the measured conical surface, can directly show the tapering angle through the measuring apparatu, detection speed is fast, can realize detecting in batches. In this embodiment, taper sleeve and cushion cover are through adopting locating pin and screw connection.

In this embodiment, the tapered holes 131 are provided with two sets of air holes, the two sets of air holes are symmetrically arranged, each set of air holes includes an upper air hole 31 and a lower air hole 32, and the upper air hole 31 and the lower air hole 32 are located on the same cross section. In this embodiment, a pair of upper and lower air holes are respectively arranged on two sides of the taper sleeve, the left and right air holes are respectively two, and the positions of the upper and lower air holes are determined according to the length of the measured conical surface of the product.

In this embodiment, the air holes are circular air holes with a diameter of 1 mm.

In this embodiment, the upper air hole 31 and the lower air hole 32 are disposed obliquely, and the oblique direction is inclined from bottom to top.

In the embodiment, the checking fixture comprises a standard part, when the checking fixture is calibrated, the standard part is inserted into the cushion cover 12 and the taper sleeve 13, the roughness of the standard part is less than Ra0.4, and the standard part is a standard product with the same shape as the product.

In this embodiment, the base 11 includes a through hole 111, and the through hole 111 and the tapered hole 131 are correspondingly disposed, so that when a product is inserted, the product is prevented from being blocked by the base.

In this embodiment, the base 11 includes a panel 5 and a pad column 6, the pad column 6 is disposed at the bottom of the panel 5, the pad column is used for supporting the panel 5, and the panel 5 is used for bearing the taper sleeve.

A detection method for pneumatically detecting a taper angle comprises the following steps: s100: inserting the product 10 into the checking fixture, feeding air pressure formed by the taper sleeve 13 and the conical surface 4 of the product to be measured back to the measuring instrument 2 through the left and right groups of air holes, and measuring the diameters of two truncated circles, namely a large end and a small end, of the conical surface of the product to be measured, wherein the diameter of the large end of the conical surface is D, and the diameter of the small end is D;

s200: the positions of the upper air hole 31 and the lower air hole 32 are a fixed length L, namely the length between the diameter of the large end and the diameter of the small end is L, and the diameter and the length of the large end and the small end of the product to be measured are calculated through the measuring instrument to obtain the taper angle a of the product to be measured;

s300: according to a calculation formula of the taper angle:

and calculating the taper angle.

In this embodiment, before detection, the checking fixture is calibrated, so as to calibrate the precision of the checking fixture.

In this embodiment, the checking fixture is checked as follows: a. inserting the standard part into a cushion cover 12 and a taper sleeve 13, wherein the cushion cover 12 is in clearance fit with the standard part and the rod part of the product 10; b. calibrating the standard piece, and respectively calibrating the large diameter and the small diameter of the large standard piece and the small standard piece through the measuring instrument 2; c. after the calibration step is completed, the standard part is inserted into the checking tool again, and if the indication value displayed by the measuring instrument is consistent with the indication value marked on the standard part, the calibration is qualified; and if not, repeating the step of calibrating the standard component until the display indication value is consistent with the indication value of the standard component. The gauge is installed on site, and a taper size can be timely and accurately adjusted by a taper grinding worker, so that the dimension is qualified.

The detection tool and the detection method for pneumatically detecting the taper angle can accurately detect the taper angle of the crankshaft, and are convenient for judging whether the product is qualified or not; in addition, the detection speed can be accelerated, the method is suitable for batch detection, and the full detection of products is realized.

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.