CN108534647B - Inspection tool for detecting part errors and method of using the same - Google Patents

Abstract

The present invention relates to a detection tool for detecting part errors and a method for using the detection tool for detecting part errors of the present invention. When using the detection tool for detecting part errors of the present invention, firstly, a proofreading part is installed on a base plate, then a detection frame is moved and the detection frame is contacted with a baffle, then a detection head is adjusted to contact with a detected surface on the proofreading part, and then the dial indicator is zeroed before the proofreading part is removed from the base plate; in this way, a measurement reference based on the detected surface of the proofreading part installed on the base plate can be determined; after the proofreading part is removed, the part to be detected is installed on the base plate, and then the detection frame is moved to a position against the baffle, the contact state of the detection head and the detected surface of the part to be detected is adjusted, and the measurement value is read from the dial indicator, and the manufacturing error of the detected surface of the part to be detected can be obtained according to the measurement value.

Description

Inspection tool for detecting part errors and method of using the same

Technical Field

The invention relates to a detection tool for detecting part errors and a use method thereof.

Background technique

In the processing and manufacturing industry, it is often necessary to detect dimensional elements such as the distance error between the hole and the surface on the part, the flatness error of the surface, and the position error. As shown in Figures 1 and 2, the structure of the part 1 to be detected is a relatively common structure. The part 1 to be detected has the same structural features as the processing positioning surface 3, the first positioning hole 4, the second positioning hole 5, and the detected surface 6 on the proofreading part 2. The detected surface 6 is perpendicular to the processing positioning surface 3, and the first positioning hole 4 and the second positioning hole 5 are perpendicular to the processing positioning surface 3; due to processing errors, for different parts, there will be certain errors in the distance between the first positioning hole 4, the second positioning hole 5 and the detected surface 6, and there will also be certain errors in the flatness and position of the detected surface 6. Therefore, these errors need to be detected to determine whether the part size is qualified. However, there is no device that can quickly detect these dimensional errors. The detection means in the prior art are relatively complicated and the detection efficiency is low.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a detection tool for detecting part errors and a method of using the same, which can conveniently detect the dimensional errors of parts.

To achieve the above-mentioned purpose, the present invention provides a detection tool for detecting part errors, wherein the part to be detected includes a processing positioning surface and a first positioning hole and a second positioning hole perpendicular to the processing positioning surface, and the part to be detected also has a detected surface perpendicular to the processing positioning surface; the detection tool includes a base plate provided with a detection positioning surface, and the base plate is provided with a first positioning pin and a second positioning pin perpendicular to the detection positioning surface; the base plate is also provided with a baffle perpendicular to the detection positioning surface, and a linear guide rail perpendicular to the baffle; a detection frame is slidably connected to the linear guide rail, and a plurality of detection heads are connected to the detection frame, and the detection heads are connected to the dial indicator through a conversion mechanism.

Preferably, a first quick clamping mechanism and a second quick clamping mechanism are provided on the bottom plate, and the first quick clamping mechanism and the second quick clamping mechanism are used to press the part to be inspected onto the bottom plate.

Preferably, a pushing mechanism is further provided on the bottom plate, and the pushing mechanism is used to press the detection frame toward the baffle.

Preferably, the detection frame includes a frame plate parallel to the baffle, and the first slider and the second slider are connected to both ends of the frame plate. The linear guide rail includes a first half guide rail and a second half guide rail parallel to each other, and the first slider and the second slider are slidably connected to the first half guide rail and the second half guide rail respectively.

More preferably, four detection heads are provided on the frame.

More preferably, the conversion mechanism includes a connecting block connected to the frame, a rotating crank arm is connected to the connecting block, the rotating crank arm includes a first connecting arm and a second connecting arm, the detection column of the dial indicator is against the first connecting arm, and the detection head is against the second connecting arm.

Furthermore, the first connecting arm is perpendicular to the second connecting arm, the detection column of the dial indicator extends in the vertical direction, and the detection head extends in the horizontal direction.

Furthermore, the first connecting arm and the second connecting arm are equal in length.

Corresponding to the detection tool for detecting part errors of the present invention, the present invention also provides a method for using the detection tool for detecting part errors, which uses the detection tool for detecting part errors described in the above technical solution or any preferred technical solution thereof to perform operations, including the following steps:

1) Match the machining positioning surface of the proofreading part with the detection positioning surface on the bottom plate, and match the first positioning hole and the second positioning hole on the proofreading part with the first positioning pin and the second positioning pin on the bottom plate respectively;

2) Slide the test frame along the linear guide rail and make the frame to be tested contact with the baffle, then adjust the test head to contact the tested surface on the calibration part, and then remove the calibration part from the bottom plate after zeroing the dial indicator;

3) Match the machining positioning surface of the part to be detected with the detection positioning surface on the bottom plate, and match the first positioning hole and the second positioning hole on the part to be detected with the first positioning pin and the second positioning pin on the bottom plate respectively;

4) Slide the inspection frame along the linear guide rail and make the frame to be inspected contact with the baffle, then adjust the inspection head to contact the inspected surface on the part to be inspected, read the dial indicator reading and record it.

As described above, the present invention relates to a detection tool for detecting part errors and a method of using the same, which have the following beneficial effects: in a detection tool for detecting part errors of the present invention, a plurality of detection heads are provided on a detection frame, and the detection frame can slide along a linear guide rail and make the detection head contact with the detected surface on the part to be detected; when using a detection tool for detecting part errors of the present invention, firstly install the proofreading part on the base plate, then move the detection frame and make the detection frame contact with the baffle, then adjust the detection head to contact with the detected surface on the proofreading part, and then remove the proofreading part from the base plate after zeroing the dial indicator; in this way, a measurement reference based on the detected surface of the proofreading part installed on the base plate can be determined; after removing the proofreading part, install the part to be detected on the base plate, move the detection frame to a position against the baffle, adjust the contact state of the detection head with the detected surface of the part to be detected, read the measurement value from the dial indicator, and the manufacturing error of the detected surface of the part to be detected can be obtained according to the measurement value. It can be seen that the detection tool for detecting part errors and the use method thereof of the present invention can conveniently detect the dimensional errors of parts, have a simple structure, are easy to use, and can improve detection efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram showing a three-dimensional structure of a proofreading component;

FIG2 is a schematic diagram of a three-dimensional structure of a calibration component from another angle;

FIG3 is a top view showing a detection tool for detecting part errors of the present invention detecting a part to be detected;

FIG4 is a left side view of a detection tool for detecting part errors in FIG3 ;

FIG. 5 is a schematic diagram showing the cross-sectional structure of the conversion mechanism, the detection frame, the stopper, and the part to be detected, as viewed from the perspective of FIG. 3 .

Component number description

1 Parts to be inspected

2. Check parts

3 Machining positioning surface

4 First positioning hole

5 Second positioning hole

6 Surface to be inspected

7. Detection of positioning surface

8 Bottom Plate

9 First positioning pin

10 Second positioning pin

11 Baffle

12 Linear guides

13. Detection rack

14 Detection head

15 Conversion mechanism

16 Dial indicator

17 First quick clamping mechanism

18 Second quick clamping mechanism

19 Pushing mechanism

20 Shelf Board

21 First Slider

22 Second Slider

23 First half rail

24 Second half rail

25 Connection block

26 Rotating crank arm

27 First connecting arm

28 Second connecting arm

29 Detection column

30 Sleeve

Detailed ways

The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

As shown in Figures 3 to 5, the present invention provides a detection tool for detecting part errors. The part 1 to be detected includes a processing positioning surface 3 and a first positioning hole 4 and a second positioning hole 5 perpendicular to the processing positioning surface 3. The part 1 to be detected also has a detected surface 6 perpendicular to the processing positioning surface 3; the detection tool includes a bottom plate 8 provided with a detection positioning surface 7, and the bottom plate 8 is provided with a first positioning pin 9 and a second positioning pin 10 perpendicular to the detection positioning surface 7; the bottom plate 8 is also provided with a baffle 11 perpendicular to the detection positioning surface 7, and a linear guide 12 perpendicular to the baffle 11; a detection frame 13 is slidably connected to the linear guide 12, and a plurality of detection heads 14 are connected to the detection frame 13, and the detection head 14 is connected to a dial indicator 16 through a conversion mechanism 15. Preferably, the first positioning pin 9 is a cylindrical positioning pin, and the second positioning pin 10 is a diamond positioning pin.

In a detection tool for detecting part errors of the present invention, please refer to Figures 3 to 5. A plurality of detection heads 14 are provided on a detection frame 13. The detection frame 13 can slide along a linear guide rail 12 and make the detection heads 14 contact with a detected surface 6 on a part 1 to be detected. When using a detection tool for detecting part errors of the present invention, firstly install the proofreading part 2 on the base plate 8, then move the detection frame 13 and make the detection frame 13 contact with the baffle 11, and then adjust the detection head 14 to contact with the detected surface 6 on the proofreading part 2. After the dial gauge 16 is zeroed, the calibration part 2 is removed from the base plate 8; in this way, a measurement reference based on the detected surface 6 of the calibration part 2 installed on the base plate 8 can be determined; after the calibration part 2 is removed, the part 1 to be detected is installed on the base plate 8, and then the detection frame 13 is moved to a position against the baffle 11, and the state of contact between the detection head 14 and the detected surface 6 of the part 1 to be detected is adjusted, and the measurement value is read from the dial gauge 16. According to the measurement value, the manufacturing error of the detected surface 6 of the part 1 to be detected can be obtained. It can be seen that the detection tool for detecting part errors of the present invention and the use method thereof can conveniently detect the dimensional error of parts, have a simple structure, are easy to use, and can improve the detection efficiency.

As a preferred embodiment, as shown in FIG3 , the base plate 8 is provided with a first quick clamping mechanism 17 and a second quick clamping mechanism 18, and the first quick clamping mechanism 17 and the second quick clamping mechanism 18 are used to press the part 1 to be inspected onto the base plate 8. In this way, the part 1 to be inspected is firmly fixed on the base plate 8 and cannot move, so the inspection result is more accurate.

In the part to be inspected 1 and the calibration part 2, the nominal size of the first positioning hole 4 and the second positioning hole 5 from the surface to be inspected is certain. For example, please refer to Figure 5. The nominal size between the first positioning hole 4 and the surface to be inspected is L, and the actual size between the first positioning hole 4 on the part to be inspected 1 and the surface to be inspected is L'. The error between L and L' is very small, and this error can be calculated based on the data measured by the dial indicator 16. When measuring the dimensional error of the part to be inspected 1 using a detection tool for detecting part errors of the present invention, the calibration part 2 is first installed on the bottom plate 8, and the surface to be inspected of the calibration part 2 is used to zero the dial indicators 16. When the dial indicators 16 are zeroed, the detection frame 13 is close to the block, and then the detection head 14 of each dial indicator 16 is brought into contact with the surface to be inspected of the calibration part 2, and then the pointer of each dial indicator 16 is calibrated to the zero scale. At this time, the plane that coincides with the inspected surface 6 of the calibration part 2 is the reference detection surface. When the part 1 to be tested is tested later, after the part 1 to be tested is positioned and installed on the bottom plate 8, there is a small error between the tested surface 6 on the part to be tested and the reference test surface. Then the test frame 13 is moved to a position close to the baffle 11, and the detection heads 14 of the dial gauges 16 are adjusted to contact the tested surface 6 of the part 1 to be tested, and the error between the tested surface 6 on the part to be tested and the reference test surface can be obtained through the reading of the dial gauge 16. In order to make the test frame 13 and the baffle 11 close reliably, preferably, as shown in Figure 3, drawing 5, the bottom plate 8 is also provided with a pushing mechanism 19, and the pushing mechanism 19 is used to press the test frame 13 toward the baffle 11. The test frame 13 includes a frame plate 20 parallel to the baffle 11, and the two ends of the frame plate 20 are connected with a first slider 21 and a second slider 22, and the linear guide 12 includes a first half guide rail 23 and a second half guide rail 24 parallel to each other, and the first slider 21 and the second slider 22 are respectively slidably connected to the first half guide rail 23 and the second half guide rail 24. When the detection frame 13 is close to the baffle 11, the frame plate 20 is closely attached to the baffle 11. As shown in Fig. 3, the frame plate 20 is provided with four detection heads 14, which are aligned with various positions on the detection surface 6 of the part 1 to be detected as evenly as possible according to the spatial layout.

In a testing tool for detecting part errors of the present invention, a dial gauge 16 is connected to a testing head 14 through a conversion mechanism 15. As shown in FIG5 , the testing head 14 is installed in a sleeve 30 arranged on a frame plate 20. The testing head 14 can move axially. The testing head 14 transmits the dimensional error on the surface to be tested to the dial gauge 16 through the conversion mechanism 15, so the value read from the dial gauge 16 is the dimensional error obtained by the test. The conversion mechanism 15 includes a connecting block 25 connected to the frame plate 20, and a rotating crank arm 26 is connected to the connecting block 25. The rotating crank arm 26 includes a first connecting arm 27 and a second connecting arm 28. The detection column 29 of the dial gauge 16 abuts against the first connecting arm 27, and the testing head 14 abuts against the second connecting arm 28. In this way, the movement of the testing head 14 will drive the rotating crank arm 26 to rotate, and the rotating crank arm 26 converts the horizontal displacement of the testing head 14 into the vertical displacement of the detection column 29 of the dial gauge 16. More preferably, the first connecting arm 27 is perpendicular to the second connecting arm 28, the detection column 29 of the dial gauge 16 extends in the vertical direction, the detection head 14 extends in the horizontal direction, and the angle between the detection head 14 and the first connecting arm 27 is equal to the angle between the detection column 29 and the second connecting arm 28; when the detection column 29 is perpendicular to the first connecting arm 27, the detection head 14 is perpendicular to the second connecting arm 28. Further, the first connecting arm 27 and the second connecting arm 28 are equal in length.

Corresponding to the detection tool for detecting part errors of the present invention, the present invention also provides a method for using the detection tool for detecting part errors, which uses the detection tool for detecting part errors described in the above technical solution or any preferred technical solution thereof to perform operations, including the following steps:

1) Match the machining positioning surface 3 of the proofreading part 2 with the detection positioning surface 7 on the bottom plate 8, and match the first positioning hole 4 and the second positioning hole 5 on the proofreading part 2 with the first positioning pin 9 and the second positioning pin 10 on the bottom plate 8 respectively;

2) Slide the detection frame 13 along the linear guide rail 12 and make the detection frame 13 contact with the baffle 11, then adjust the detection head 14 to contact the detection surface 6 on the calibration part 2, and then remove the calibration part 2 from the bottom plate 8 after zeroing the dial indicator 16;

3) Match the machining positioning surface 3 of the part to be detected 1 with the detection positioning surface 7 on the bottom plate 8, and match the first positioning hole 4 and the second positioning hole 5 on the part to be detected 1 with the first positioning pin 9 and the second positioning pin 10 on the bottom plate 8 respectively;

4) Slide the detection frame 13 along the linear guide rail 12 and make the detection frame 13 contact with the baffle 11, then adjust the detection head 14 to contact with the detection surface 6 on the part 1 to be detected, read the reading of the dial indicator 16 and record it.

Preferably, the bottom plate 8 is further provided with a first quick clamping mechanism 17 and a second quick clamping mechanism 18, which are used to press the part 1 to be inspected onto the bottom plate 8. The bottom plate 8 is further provided with a pushing mechanism 19, which is used to press the inspection frame 13 toward the baffle 11. The pushing mechanism 19 can move back and forth in a direction parallel to the linear guide rail 12.

More preferably, in step 1), the first quick clamping mechanism 17 and the second quick clamping mechanism 18 are used to press the calibration part 2 onto the base plate 8; in step 2), the pushing mechanism 19 is used to press the detection frame 13 toward the baffle 11.

More preferably, in step 3), the first quick clamping mechanism 17 and the second quick clamping mechanism 18 are used to press the part 1 to be inspected onto the bottom plate 8; in step 4), the pushing mechanism 19 is used to press the inspection frame 13 toward the baffle 11.

According to the theory of tolerance and fit, we can calculate and evaluate the distance error between the first positioning hole 4 and the inspected surface 6 on the inspected part 1, the distance error between the second positioning hole 5 and the inspected surface 6, the flatness and position errors of the inspected surface 6, etc. based on the readings of the dial indicator 16.

Based on the technical solutions of the above embodiments, a detection tool for detecting part errors and a method of using the same of the present invention can conveniently detect the dimensional errors of parts, has a simple structure, is easy to use, and can improve detection efficiency.

In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims (5)

1. A detection fixture for detecting part errors, wherein the part to be detected (1) comprises a processing positioning surface (3) and a first positioning hole (4) and a second positioning hole (5) perpendicular to the processing positioning surface (3), and the part to be detected (1) also has a detected surface (6) perpendicular to the processing positioning surface (3); the detection fixture comprises a bottom plate (8) provided with a detection positioning surface (7), and the bottom plate (8) is provided with a first positioning pin (9) and a second positioning pin (10) perpendicular to the detection positioning surface (7); the bottom plate (8) is also provided with a baffle (11) perpendicular to the detection positioning surface (7), and a linear guide rail (12) perpendicular to the baffle (11); a detection frame (13) is slidably connected to the linear guide rail (12), the linear guide rail (12) comprises a first half guide rail (23) and a second half guide rail (24) parallel to each other, and the detection frame (13) comprises a frame plate (20) parallel to the baffle plate (11), and both ends of the frame plate (20) A first slider (21) and a second slider (22) are connected, the first slider (21) and the second slider (22) are slidably connected to a first half guide rail (23) and a second half guide rail (24) respectively, four detection heads (14) are arranged on the frame plate (20), the detection heads (14) are connected to a dial gauge (16) through a conversion mechanism (15), the conversion mechanism (15) comprises a connection block (25) connected to the frame plate (20), a rotating crank arm (26) is connected to the connection block (25), the rotating crank arm (26) comprises a first connecting arm (27) and a second connecting arm (28), a detection column (29) of the dial gauge (16) abuts against the first connecting arm (27), the detection head (14) abuts against the second connecting arm (28), the first connecting arm (27) is perpendicular to the second connecting arm (28), the detection column (29) of the dial gauge (16) can move in a vertical direction, and the detection head (14) can move in a horizontal direction. 2. The inspection tool for detecting part errors according to claim 1 is characterized in that a first quick clamping mechanism (17) and a second quick clamping mechanism (18) are provided on the base plate (8), and the first quick clamping mechanism (17) and the second quick clamping mechanism (18) are used to press the part to be inspected (1) onto the base plate (8). 3. The inspection tool for detecting part errors according to claim 1 is characterized in that a pushing mechanism (19) is also provided on the base plate (8), and the pushing mechanism (19) is used to press the inspection frame (13) toward the baffle (11). 4. The detection tool for detecting part errors according to claim 1 is characterized in that the first connecting arm (27) and the second connecting arm (28) are equal in length. 5. A method for using a detection tool for detecting part errors, characterized in that the detection tool for detecting part errors according to any one of claims 1 to 4 is used to perform operations, comprising the following steps: The machining positioning surface (3) of the calibration part (2) is matched with the detection positioning surface (7) on the bottom plate (8), and the first positioning hole (4) and the second positioning hole (5) on the calibration part (2) are matched with the first positioning pin (9) and the second positioning pin (10) on the bottom plate (8) respectively; Slide the detection frame (13) along the linear guide rail (12) and make the detection frame (13) contact the baffle (11), then adjust the detection head (14) to contact the detection surface (6) on the calibration part (2), and then remove the calibration part (2) from the bottom plate (8) after zeroing the dial indicator (16); The processing positioning surface (3) of the part to be detected (1) is matched with the detection positioning surface (7) on the bottom plate (8), and the first positioning hole (4) and the second positioning hole (5) on the part to be detected (1) are matched with the first positioning pin (9) and the second positioning pin (10) on the bottom plate (8) respectively; The detection frame (13) is slid along the linear guide rail (12) to make the detection frame (13) contact with the baffle (11), and then the detection head (14) is adjusted to contact with the detection surface (6) on the detection part (1), and the reading of the dial indicator (16) is read and recorded.