Detection tool for rapidly detecting position degree of batch machining parts

Abstract

The utility model discloses a gauge for rapidly detecting the position degree of batch machining parts, which comprises a base of which the middle of the top surface is provided with a concave cavity for placing a detected part, the bottom surface is provided with a first gauge reference surface in a surrounding manner, the rear side surface is provided with a second gauge reference surface, and the two side surfaces are provided with counterbores facing the concave cavity; the first gauge reference surface and the second gauge reference surface respectively correspond to the first part reference surface and the second part reference surface of a detected part in position, and the counterbore corresponds to a part hole of the detected part in position; the guide sleeve is provided with a guide sleeve hole and is movably arranged in the counterbore; the detection pin is movably arranged in the guide sleeve hole, and whether the position degree of the detected part is qualified or not is judged according to whether the detection pin is smoothly inserted into the part hole of the detected part or not; the pressure head assembly is mounted on the top surface of the base and compresses the detected part; and the elastic pressing plunger screw rod is arranged on the front side surface of the base and is used for tightly jacking the detected part by utilizing an elastic force.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a checking tool for rapid position detection of batch mechanically processed parts. Background Art

[0002] During machining, the positional accuracy of part features is crucial for ensuring product quality and performance. Traditionally, coordinate measuring machines (CMMs) have been used for inspection. While this method offers high accuracy, it suffers from high equipment costs and complex operation, making it difficult to meet the demands of high-volume, rapid inspection. Furthermore, the accuracy of data obtained using CMMs can be significantly affected by the part structure, the position of the inspected area, and potential deformation of the product after processing.

[0003] Therefore, developing a checking fixture that can quickly and accurately detect the position of batch processed parts is of great practical significance. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to provide a checking fixture for rapid position detection of batch machined parts to improve detection efficiency and accuracy.

[0005] To achieve the above-mentioned purpose, the present invention provides a checking fixture for rapid position detection of batch machined parts, comprising:

[0006] A base, wherein a concave cavity for placing a part to be inspected is provided in the middle of the top surface of the base, a first gauge reference surface is provided around the bottom surface of the concave cavity, the first gauge reference surface is parallel to the bottom surface of the base, a second gauge reference surface is provided on the rear side surface of the concave cavity, the second gauge reference surface is perpendicular to the bottom surface of the base, and countersunk holes facing the concave cavity are provided on the left and right sides of the base; the first gauge reference surface and the second gauge reference surface correspond to the first part reference surface and the second part reference surface of the part to be inspected, respectively, and the countersunk holes correspond to the positions of the part holes of the part to be inspected;

[0007] A guide sleeve having a guide sleeve hole, wherein the guide sleeve is movably disposed in the countersunk hole;

[0008] a detection pin, the detection pin being movably disposed in the guide sleeve hole and being configured to determine whether the detected part is qualified in terms of position by whether the detection pin is successfully inserted into the part hole of the detected part;

[0009] a pressing head assembly, the pressing head assembly being mounted on the top surface of the base and being configured to press the inspected part; and

[0010] An elastic compression plunger screw is provided on the front side of the base and is configured to press the detected part tightly by utilizing elastic force.

[0011] Furthermore, the base is made of 7075 aluminum alloy and is subjected to hard oxidation surface treatment.

[0012] Furthermore, the first gauge reference surface and the second gauge reference surface are manufactured by pressing a solid steel pin into the countersunk hole to fit tightly and then fine-machining the pin through a four-axis machining center.

[0013] Furthermore, the first gauge reference surface and the second gauge reference surface are manufactured by a trial cutting method.

[0014] Furthermore, a clearance position is provided in the cavity around the first gauge reference surface, and a height of the clearance position is lower than a height of the first gauge reference surface.

[0015] Furthermore, a first threaded hole is provided on the front side of the base, and the elastic compression plunger screw includes a screw, a plunger and a spring, the spring is arranged inside the screw, the plunger is slidably connected to the screw through the spring, and the screw includes an external thread for screwing into the first threaded hole.

[0016] Furthermore, the elastic compression plunger screw is configured to compress the spring by screwing the screw in, and use the elastic force of the spring to push the plunger to press the inspected part to ensure that the second part reference surface is in contact with the second gauge reference surface.

[0017] Furthermore, the detection pin adopts a standard tungsten steel needle plug gauge.

[0018] Furthermore, a second threaded hole is provided on the top surface of the base, and the second threaded hole is used to install the pressure head assembly. The pressure head assembly is configured to ensure that the first part reference surface is in contact with the first gauge reference surface by pressing the inspected part.

[0019] The beneficial effects of the utility model are:

[0020] 1. The inspection tool provided by the utility model has a simple structure, is easy to manufacture and has low cost;

[0021] 2. The inspection tool provided by this utility model is easy to operate and can quickly detect the position of large quantities of mechanical parts;

[0022] 3. The inspection fixture of this utility model is suitable for various types of machined parts, especially deep holes that are difficult to measure with CMM, and thin-walled parts that cannot be accurately measured by traditional methods due to deformation after processing;

[0023] 4. The use of the quick inspection tool provided by the utility model significantly improves production efficiency and reduces the manufacturing cost of the enterprise.

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a detected part in a preferred embodiment of the present invention;

[0026] Figure 2 This is a front view of a detected part in a preferred embodiment of the present utility model;

[0027] Figure 3 yes Figure 2 A partial enlarged view of point D in the middle;

[0028] Figure 4 This is a structural diagram of a preferred embodiment of the inspection tool of the present invention;

[0029] Figure 5 It is a detection schematic diagram of a detection tool according to a preferred embodiment of the present utility model.

[0030] Among them, 10-inspected part, 11-part hole, 12-part A reference surface, 13-part B reference surface, 14-part C reference surface, 100-gauging fixture, 101-base, 102-guide sleeve, 103-detection pin, 104-quick press head assembly, 105-elastic pressing plunger screw, 106-concave cavity, 107-countersunk hole, 108-gauging fixture A reference surface, 109-gauging fixture B reference surface, 110-avoidance position, 111-first threaded hole, 112-notch, 113-screw, 114-screw, 115-plunger. DETAILED DESCRIPTION

[0031] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0032] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The dimensions and thicknesses of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thicknesses of components in some places in the drawings are exaggerated.

[0033] Example 1

[0034] like Figure 1-3 As shown, the part 10 being inspected has two holes 11 machined along its length along its front edge. A datum plane 12 for Part A is machined around the top surface of the part 10. A datum plane 13 for Part B is machined along its thickness along the front side of the part 10. A datum plane 14 for Part C is machined along its thickness along the right side of the part 10. Datum planes 12, 13, and 14 define the position of the part 10 being measured. Figure 3 The geometric tolerance requirements of the part hole 11 of the measured part 10 are shown.

[0035] like Figure 4 As shown, this embodiment provides a gauge 100 for rapid position detection of batch machined parts, including a base 101 , a guide sleeve 102 , a detection pin 103 , a rapid pressing head assembly 104 and an elastic pressing plunger screw 105 .

[0036] Base 101: As the main component of the inspection fixture 100, its main body is made of 7075 aluminum alloy and has undergone hard-oxidized surface treatment. A cavity 106 for placing the inspected part 10 is machined in the middle of the top surface of the base 101, and the bottom surface of the cavity 106 is arranged parallel to the bottom surface of the base 101. The left and right sides of the base 101 are respectively machined with cylindrical countersunk holes 107. A solid steel pin is pressed into the countersunk hole 107, and after being tightly fitted, it is finely machined by a four-axis machining center to ensure that the distance from the inspection fixture A reference surface 108 and the inspection fixture B reference surface 109 to the countersunk holes 107 on the left and right sides is the set value. Preferably, the inspection fixture A reference surface 108 and the inspection fixture B reference surface 109 are machined by trial cutting to ensure the machining accuracy of the inspection fixture A reference surface 108 and the inspection fixture B reference surface 109. The inspection fixture A reference surface 108 is machined around the bottom surface of the cavity 106 and is arranged parallel to the bottom surface of the base 101. The reference surface 109 of the gauge B is formed on the rear side surface of the cavity 106 and is arranged perpendicular to the bottom surface of the base 101. In this embodiment, the reference surface 109 of the gauge B can be formed in two places, and the two reference surfaces 109 of the gauge B share a common plane. A clearance position 110 is processed in the middle of the reference surface 108 of the gauge A. The height of the clearance position 110 is lower than the height of the reference surface 108 of the gauge A to avoid the protruding part of the inspected part 10. The guide sleeve 102 is adapted to the countersunk hole 107, and a guide sleeve hole is opened in the center of the guide sleeve 102. The guide sleeve hole is adapted to the detection pin 103 (the diameter of the detection pin 103 needs to be determined according to the shape and position tolerance of the drawing of the inspected workpiece 10), and the fitting clearance is based on the smooth passage of the detection pin 103. The front side of the base 101 is machined with a first threaded hole 111, which is used to install an elastic compression plunger screw 105. During testing, the elastic compression plunger screw 102 presses against the inspected part 10 to ensure that the part B reference surface 13 is fully aligned with the gauge B reference surface 109. The top surface of the base 101 is machined with a second threaded hole for mounting a quick-pressing head assembly 104. During testing, the quick-pressing head assembly 104 presses against the surface of the inspected part 10 to ensure that the part A reference surface 12 is fully aligned with the gauge A reference surface 108. Notches 112 are machined on the left and right sides of the base 101 to facilitate the removal and placement of the inspected part 10.

[0037] Guide sleeve 102: used to position the detection pin 103 during detection to ensure that it is in the set position.

[0038] Detection pin 103: used to detect the position of the inspected part 10, and its diameter is determined according to the shape and position tolerance of the drawing. Figure 3 As shown, the diameter of the part hole of the part 10 to be processed is φ2.5F7 (+0.016 / +0.006). Because its tolerance is small, considering the position tolerance (such as Figure 3 As shown) and other errors, select the detection pin 103 of φ2.42±0.001 (standard tungsten steel needle plug gauge can be used).

[0039] Fast pressing head assembly 104: fixed to the base 101 by screws 113, used to press the inspected part 10 so that the part A reference surface 12 is aligned with the inspection fixture A reference surface 108. There can be multiple fast pressing head assemblies 104, arranged at different locations around the base 101.

[0040] Elastic Compression Plunger Screw 105: The elastic compression plunger screw 105 comprises a screw 114, a plunger 115, and a spring. The plunger 115 is slidably connected to the screw 114 via a spring disposed within the screw 114. The screw 114 includes external threads for screwing into the first threaded hole 111 on the front side of the base 101. The spring is compressed by screw 114, and the spring's elastic force pushes the plunger 115 against the inspected part 10, ensuring that the reference surface 13 of the part B is fully aligned with the reference surface 109 of the inspection fixture B.

[0041] Example 2

[0042] like Figure 4-5 As shown, this embodiment provides a method for rapid position detection of batch machined parts, the steps of which are as follows:

[0043] First, the inspected part 10 is placed face down in the concave cavity 106 of the base 101 of the inspection fixture 100. The elastic force of the elastic compression plunger screw 105 makes the part B reference surface 13 fit with the inspection fixture B reference surface 109. Then, the quick press head assembly 104 is used to press the inspected part 10 so that the part A reference surface 12 fits with the inspection fixture A reference surface 108. Finally, the inspection pin 13 is inserted into the guide sleeve 102, and the inspection pin 103 is pushed into the inspected part 10 through the guide sleeve 102. If the inspection pin 103 can be smoothly inserted into the part hole 11 of the inspected part 10, the inspected part 10 is qualified in terms of position.

[0044] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A fixture for rapid position detection of batch machined parts, characterized in that: include: A base, wherein a concave cavity for placing a part to be inspected is provided in the middle of the top surface of the base, a first gauge reference surface is provided around the bottom surface of the concave cavity, the first gauge reference surface is parallel to the bottom surface of the base, a second gauge reference surface is provided on the rear side surface of the concave cavity, the second gauge reference surface is perpendicular to the bottom surface of the base, and countersunk holes facing the concave cavity are provided on the left and right sides of the base; the first gauge reference surface and the second gauge reference surface correspond to the first part reference surface and the second part reference surface of the part to be inspected, respectively, and the countersunk holes correspond to the positions of the part holes of the part to be inspected; A guide sleeve having a guide sleeve hole, wherein the guide sleeve is movably disposed in the countersunk hole; a detection pin, the detection pin being movably disposed in the guide sleeve hole and being configured to determine whether the detected part is qualified in terms of position by whether the detection pin is successfully inserted into the part hole of the detected part; a pressing head assembly, the pressing head assembly being mounted on the top surface of the base and being configured to press the inspected part; as well as An elastic compression plunger screw is provided on the front side of the base and is configured to press the detected part tightly by utilizing elastic force.

2. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: The base is made of 7075 aluminum alloy and is hard-oxidized.

3. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: The first gauge reference surface and the second gauge reference surface are manufactured by pressing a solid steel pin into the countersunk hole and then tightly fitting the pin and then fine-machining the pin through a four-axis machining center.

4. The inspection tool for rapid position detection of batch machined parts according to claim 3, characterized in that: The first gauge reference surface and the second gauge reference surface are manufactured by a trial cutting method.

5. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: A clearance position is provided in the cavity around the first gauge reference surface, and a height of the clearance position is lower than a height of the first gauge reference surface.

6. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: A first threaded hole is provided on the front side of the base, and the elastic compression plunger screw includes a screw, a plunger and a spring. The spring is arranged inside the screw, and the plunger is slidably connected to the screw through the spring. The screw includes an external thread for being screwed into the first threaded hole.

7. The inspection tool for rapid position detection of batch machined parts according to claim 6, characterized in that: The elastic compression plunger screw is configured to compress the spring by screwing the screw in, and use the elastic force of the spring to push the plunger to press against the inspected part to ensure that the second part reference surface is in contact with the second gauge reference surface.

8. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: The detection pin adopts a standard tungsten steel needle plug gauge.

9. The inspection tool for rapid position detection of batch machined parts according to claim 1, characterized in that: A second threaded hole is provided on the top surface of the base, and the second threaded hole is used to install the press head assembly. The press head assembly is configured to ensure that the first part reference surface is aligned with the first gauge reference surface by pressing the inspected part.

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