A device for detecting the symmetry of an engine connecting rod web

Abstract

This utility model discloses a device for detecting the symmetry of an engine connecting rod web, including a detection pad and a mounting base. The detection pad has several through holes at its beginning; a groove is formed in the middle of the lower end face of the detection pad, and bosses are formed at both ends of the lower end face; the mounting base is used to mount a dial indicator; the bottom surface of the mounting base is flat; the mounting base can be placed on the upper end face of the detection pad; the measuring rod of the dial indicator passes through the through holes and contacts the surface of the workpiece web. The advantages of this utility model are: stable placement can be achieved with the help of the detection pad and mounting base, avoiding the problem of unstable hand-held angles, and resulting in more accurate measurements.

Description

Technical Field

[0001] This utility model relates to the field of engine connecting rod inspection tool technology, and in particular to an engine connecting rod web symmetry detection device. Background Technology

[0002] Excessive symmetry in the connecting rod web can lead to a series of problems, including uneven piston wear, abnormal piston ring wear, rough engine operation, connecting rod fatigue fracture, and increased compression resistance, affecting engine performance and lifespan. Once excessive symmetry is detected in the connecting rod web, corrective measures or replacement should be taken promptly to ensure normal engine operation. Traditionally, connecting rod web symmetry is measured manually using a dial indicator placed on a workbench. The problem is that it's difficult to ensure the dial indicator is vertical, and the unstable angle of the dial indicator results in inaccurate measurements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an engine connecting rod web symmetry detection device, which can be stably placed with the help of a detection pad and mounting base, avoiding the problem of unstable hand-held angle, and making the measurement more accurate.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is an engine connecting rod web symmetry detection device, including a detection pad and a mounting base; the detection pad has several through holes at the beginning; a groove is opened in the middle of the lower end face of the detection pad, and bosses are formed at both ends of the lower end face; the mounting base is used to install a dial indicator; the bottom surface of the mounting base is flat; the mounting base can be placed on the upper end face of the detection pad; the detection rod of the dial indicator passes through the through holes and contacts the surface of the workpiece web.

[0005] Furthermore, a positioning block is connected to one end of the lower end face of the detection pad; a portion of the side wall of the positioning block mates with the inner wall of the large hole of the workpiece to be tested.

[0006] Furthermore, it includes a measuring platform, the bottom of which is equipped with feet.

[0007] Furthermore, a placement plate for placing the detection pad is installed on the upper end of the measuring stage.

[0008] Furthermore, the upper surface of the placement plate is provided with a placement groove; the bottom of the placement groove is provided with a limiting hole that cooperates with the positioning block.

[0009] Furthermore, the bottom of the placement groove is provided with a strip-shaped hole for avoiding the detection rod.

[0010] The beneficial effects of this utility model are: A specialized testing pad and mounting base were designed. During testing, the testing pad is placed on the workpiece, with the protrusions at both ends of the pad contacting the ends of the workpiece. The dial indicator is installed inside the mounting base, and then the dial indicator and mounting base are placed on the testing pad. The dial indicator's probe passes through the through-hole and contacts the web of the workpiece, where a reading is taken and recorded. The workpiece is then flipped over to test the other side, and readings are taken and recorded again. By comparing the test data from the two sides, it can be determined whether the symmetry of the workpiece's web meets the requirements. Compared to manual measurement with a handheld dial indicator, this design utilizes the testing pad and mounting base for stable placement, avoiding the problem of unstable hand angles and resulting in more accurate measurements. Attached Figure Description

[0011] Figure 1 This is a perspective view of the overall structure of the embodiment; Figure 2 yes Figure 1 The main view; Figure 3 for Figure 1 Exploded view.

[0012] In the figure, 1-measuring platform, 2-testing pad, 201-bore, 202-groove, 203-through hole, 3-positioning block, 4-mounting base, 5-testing rod, 6-placement plate, 7-foot, 8-dial indicator, 9-placement groove, 10-strip hole, 11-limiting hole. Detailed Implementation

[0013] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] Example An engine connecting rod web symmetry detection device, such as Figure 1-3 As shown, it includes a test pad 2 and a mounting base 4; the test pad 2 has several through holes 203; a groove 202 is provided in the middle of the lower end face of the test pad 2, and bosses 201 are formed at both ends of the lower end face; the mounting base 4 is used to install a dial indicator 8; the bottom surface of the mounting base 4 is flat; the mounting base 4 can be placed on the upper end face of the test pad 2; the test rod 5 of the dial indicator 8 passes through the through holes 203 and contacts the surface of the workpiece web.

[0015] A specialized testing pad 2 and mounting base 4 were designed. During testing, the testing pad 2 is placed on the workpiece. The bosses 201 at both ends of the testing pad 2 are milled and precision-machined to contact the ends of the workpiece. A dial indicator 8 is installed inside the mounting base 4. Then, the dial indicator 8 and mounting base 4 are placed on the testing pad 2. The testing rod 5 of the dial indicator 8 passes through the through hole 203 and contacts the web of the workpiece to be tested. Readings are then taken and recorded. The workpiece is then flipped over to test the other side, and readings are taken and recorded. By comparing the test data from the two sides, it can be determined whether the symmetry of the web of the workpiece meets the requirements.

[0016] Specifically, a positioning block 3 is connected to one end of the lower face of the testing pad 2; the side wall of the positioning block 3 partially mates with the inner wall of the large hole of the workpiece to be tested. During testing, the testing pad 2 is placed on the workpiece, and the positioning block 3 is inserted into the hole in the workpiece, which can position the testing pad 2 to a certain extent.

[0017] Specifically, it includes a measuring table 1, with feet 7 installed at the bottom. During operation, the workpiece is placed on the measuring table 1.

[0018] Specifically, in order to facilitate the placement of the test pad 2, a placement plate 6 for placing the test pad 2 is installed on the upper end of the measuring table 1.

[0019] Specifically, the upper surface of the placement plate 6 is provided with a placement groove 9; the bottom of the placement groove 9 is provided with a limiting hole 11 that cooperates with the positioning block 3.

[0020] Specifically, the bottom of the placement groove 9 is provided with a strip hole 10 for avoiding the detection rod 5.

[0021] The working principle of this utility model: A specialized testing pad 2 and mounting base 4 are designed. During testing, the testing pad 2 is placed on the workpiece. The bosses 201 at both ends of the testing pad 2 are milled and precision-machined to contact the two ends of the workpiece. The dial indicator 8 is installed inside the mounting base 4. Then, the dial indicator 8 and mounting base 4 are placed on the testing pad 2. The measuring rod 5 of the dial indicator 8 passes through the through hole 203 and contacts the web of the workpiece to be tested. The reading is then taken and recorded. The workpiece is then flipped over to test the other side, and the reading is taken and recorded. By comparing the test data of the two sides, it can be determined whether the symmetry of the web of the workpiece meets the requirements. Compared with manual handheld measurement with a dial indicator, this application can achieve stable placement with the help of the testing pad and mounting base, avoiding the problem of unstable handheld angle, and making the measurement more accurate. When not in use, the testing pad 2 is placed in the placement groove 9 of the placement plate 6, the positioning block 3 is inserted into the limiting hole 11, and the measuring rod 5 of the dial indicator 8 is inserted into the strip hole 10.

[0022] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A device for detecting the symmetry of the web of an engine connecting rod, characterized in that: The device includes a test pad (2) and a mounting base (4); the test pad (2) has several through holes (203); a groove (202) is provided in the middle of the lower end face of the test pad (2), and bosses (201) are formed at both ends of the lower end face; the mounting base (4) is used to install a dial indicator (8); the bottom surface of the mounting base (4) is flat; the mounting base (4) can be placed on the upper end face of the test pad (2); the test rod (5) of the dial indicator (8) passes through the through holes (203) and contacts the surface of the web of the workpiece.

2. The engine connecting rod web symmetry detection device according to claim 1, characterized in that: The lower end face of the detection pad (2) is connected to a positioning block (3); the side wall of the positioning block (3) partially mates with the inner wall of the large hole of the workpiece to be tested.

3. The engine connecting rod web symmetry detection device according to claim 2, characterized in that: It includes a measuring platform (1), and the bottom of the measuring platform (1) is equipped with feet (7).

4. The engine connecting rod web symmetry detection device according to claim 3, characterized in that: The upper end of the measuring platform (1) is equipped with a placement plate (6) for placing the detection pad (2).

5. The engine connecting rod web symmetry detection device according to claim 4, characterized in that: The upper end face of the placement plate (6) is provided with a placement groove (9); the bottom of the placement groove (9) is provided with a limiting hole (11) that cooperates with the positioning block (3).

6. The engine connecting rod web symmetry detection device according to claim 5, characterized in that: The bottom of the placement groove (9) is provided with a strip hole (10) for avoiding the detection rod (5).

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