Rapid detection tool for symmetry degree of piston

Abstract

The invention provides a piston symmetry degree rapid testing fixture, which comprises a bottom plate, a positioning block and a lever indicator, and is characterized in that the positioning block is arranged on one side of the surface of the bottom plate; the lever indicator is arranged on the surface of the bottom plate and located on one side of the positioning block. According to the rapid detection tool for the symmetry degree of the piston, the positioning block and the lever indicator are arranged on the two sides of the surface of the bottom plate respectively, efficient, low-cost and high-precision detection of the symmetry degree of the piston skirt can be achieved, and the rapid detection tool is suitable for batch production.

Description

Technical Field

[0001] The present invention relates to the field of piston skirt detection, and particularly to a rapid checker for piston symmetry. Background Art

[0002] The piston skirt is an important part of the piston, usually referring to the part below the piston head and below the piston pin hole, which plays a key role during the operation of the engine.

[0003] The symmetry of the piston skirt is a key factor affecting the performance of the engine. Traditional detection methods usually rely on coordinate measuring machines or special checkers, which have the problems of low efficiency and high cost.

[0004] Therefore, it is necessary to provide a rapid checker for piston symmetry to solve the above technical problems. Summary of the Invention

[0005] The present invention provides a rapid checker for piston symmetry, which solves the problem that the symmetry of the piston skirt is a key factor affecting the performance of the engine. Traditional detection methods usually rely on coordinate measuring machines or special checkers, which have the problems of low efficiency and high cost.

[0006] To solve the above technical problems, a rapid checker for piston symmetry provided by the present invention includes:

[0007] A base plate, a positioning block and a dial indicator. The positioning block is arranged on one side of the surface of the base plate;

[0008] The dial indicator is arranged on the surface of the base plate and on one side of the positioning block.

[0009] Preferably, a piston skirt main body is arranged on the surface of the positioning block.

[0010] Preferably, the positioning block is used for quickly and accurately positioning the piston skirt main body.

[0011] Preferably, the dial indicator is used for reading the information of the piston skirt main body.

[0012] Preferably, a concave activity groove is opened on the surface of the base plate and below the piston skirt main body. A pulling component is arranged inside the concave activity groove. The pulling component includes a fixed rod, a movable sleeve, a fixing bolt and a fixing bracket. The movable sleeve is sleeved on the surface of the fixed rod, and the fixing bolt is arranged between the movable sleeve and the fixed rod.

[0013] Preferably, the fixing bracket is connected to one end of the fixed rod.

[0014] Preferably, a moving component is provided at the bottom of the inner wall of the concave-shaped movable groove. The moving component includes a moving groove, a moving block, and a limiting bolt. The moving groove is formed at the bottom of the inner wall of the concave-shaped movable groove, the moving block is slidably connected to the inside of the moving groove, and the limiting bolt is arranged between the moving block and the bottom plate.

[0015] The detection method of the piston symmetry quick inspection tool is as follows:

[0016] S1. Install the positioning block on the bottom plate and position it with bolts;

[0017] S2. Place the piston to be detected on the bottom plate, perform preliminary positioning through the hole in the inner cavity of the piston, and press the blank surface of the inner cavity of the thick skirt edge of the piston against the positioning surface of the positioning block;

[0018] S3. Place the dial indicator on the side surface of the piston skirt. By adjusting the position of the magnetic base, the dial rod, and the needle of the dial indicator, ensure that the needle can contact the maximum outer diameter part of the outer circle on the piston skirt;

[0019] S4. Place the piston skirt in the initial position in step two, then slowly move it along the direction of the positioning surface of the positioning block, and at the same time pay attention to the reading of the dial indicator. When the pointer of the dial indicator swings to the maximum position, record this reading;

[0020] S5. Take out the piston skirt, rotate it 180 degrees, and then place it on the bottom plate. Press the blank surface of the inner cavity of the other thick skirt edge of the piston against the positioning surface of the positioning block;

[0021] S6. Repeat the operation in step four;

[0022] S7. Compare the difference between the two readings, and the result is the symmetry of the two thick skirt edges of the piston skirt.

[0023] Compared with the related technology, a piston symmetry quick inspection tool provided by the present invention has the following beneficial effects:

[0024] The present invention provides a piston symmetry quick inspection tool. By respectively arranging a positioning block and a dial indicator on both sides of the surface of the bottom plate, high-efficiency, low-cost, and high-precision detection of the symmetry of the piston skirt can be realized, which is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a first embodiment of a piston symmetry quick inspection tool provided by the present invention;

[0026] Figure 2 is Figure 1 the top view of the symmetry quick inspection tool shown;

[0027] Figure 3 is Figure 1 the structural diagram of the dial indicator shown;

[0028] Figure 4 For Figure 1 The three-dimensional structure schematic diagram of the positioning block shown;

[0029] Figure 5 For Figure 1 The three-dimensional structure schematic diagram of the bottom plate shown;

[0030] Figure 6 The structure schematic diagram of the second embodiment of a piston symmetry quick inspection tool provided by the present invention;

[0031] Figure 7 For Figure 6 The enlarged schematic diagram of part A shown.

[0032] The meanings of the reference numerals in the figure are:

[0033] 1. Bottom plate; 2. Positioning block; 3. Dial indicator; 4. Piston skirt body;

[0034] 5. Pulling assembly; 51. Fixed rod; 52. Movable sleeve; 53. Fixed bolt; 54. Fixed bracket;

[0035] 6. Moving assembly; 61. Moving groove; 62. Moving block; 63. Limit bolt;

[0036] 7. Concave movable groove. Specific embodiments

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] First embodiment

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , where Figure 1 The structure schematic diagram of the first embodiment of a piston symmetry quick inspection tool provided by the present invention; Figure 2 For Figure 1 The top view of the symmetry quick inspection tool shown;

[0040] Figure 3 For Figure 1 The structure schematic diagram of the dial indicator shown; Figure 4 For Figure 1 The three-dimensional structure schematic diagram of the positioning block shown; Figure 5 For Figure 1 The three-dimensional structure schematic diagram of the bottom plate shown. A piston symmetry quick inspection tool includes:

[0041] A base plate 1, a positioning block 2, and a lever dial indicator 3. The positioning block 2 is arranged on one side of the surface of the base plate 1;

[0042] The lever dial indicator 3 is arranged on the surface of the base plate 1 and is located on one side of the positioning block 2.

[0043] The surface of the positioning block 2 is provided with a piston skirt body 4.

[0044] The positioning block 2 is used to quickly and accurately position the piston skirt body 4.

[0045] The lever dial indicator 3 is used to read the information of the piston skirt body 4.

[0046] S1: Install the positioning block on the base plate and position it with bolts;

[0047] S2: Place the piston to be detected on the base plate, pre-position it through the hole in the inner cavity of the piston, and press the rough surface of the thick skirt edge inner cavity of the piston skirt against the positioning surface of the positioning block;

[0048] S3: Place the lever dial indicator on the side of the piston skirt. By adjusting the position of the magnetic base, the dial rod, and the needle of the dial indicator, ensure that the needle can contact the maximum outer diameter part of the outer circle on the piston skirt;

[0049] S4: Place the piston skirt in the initial position in step 2, then slowly move it along the direction of the positioning surface of the positioning block, and at the same time pay attention to the reading of the dial indicator. When the pointer of the dial indicator swings to the maximum position, record this reading;

[0050] S5: Take out the piston skirt, rotate it 180 degrees, and then place it on the base plate. Press the rough surface of the thick skirt edge inner cavity of the other side of the piston skirt against the positioning surface of the positioning block;

[0051] S6: Repeat the operation in step 4;

[0052] S7: Compare the difference between the two readings. The result is the symmetry of the two thick skirt edges of the piston skirt.

[0053] The positioning block 2 is installed on the bottom plate 1 and then locked with bolts. After placing the piston skirt body 4 on the bottom plate 1, the rough surface of the inner cavity of the thick skirt of the piston skirt body 3 is pressed against the positioning surface of the positioning block 2. Place the lever dial indicator 3 on the bottom plate 1, adjust the position so that the dial indicator needle is aligned with the outer circle position on the piston skirt body 4, and rotate the magnetic switch clockwise to make the magnetic base adsorbed on the bottom plate 1. When the piston skirt body 4 moves along the positioning surface of the positioning block 2, record the reading at this time when the dial indicator swings to the maximum position. Take out the piston skirt body 4, rotate it 180 degrees and place it on the bottom plate 1, press the rough surface of the other thick skirt of the piston skirt body 4 against the positioning surface of the positioning block 2, slowly move the piston skirt body 4 along the direction of the positioning surface, record the reading at this time when the dial indicator swings to the maximum position, compare the difference between the two readings, and the obtained result is the symmetry of the two thick skirts of the piston skirt body 4.

[0054] The application of the symmetry quick inspection tool and its inspection method on the piston skirt of Binzhou Bohai 3087049 includes the following steps:

[0055] S1. Install the positioning block 2 on the bottom plate 1 and position it with bolts;

[0056] S2. Place the 3087049 piston skirt to be inspected on the bottom plate 1, pre-position it through the middle hole in the inner cavity of the piston skirt, and press the rough surface of the inner cavity of the thick skirt of the piston skirt against the positioning surface of the positioning block 2;

[0057] S3. Place the lever dial indicator on the side of the 3087049 piston skirt, and ensure that the needle can touch the maximum outer diameter part of the outer circle on the piston skirt by adjusting the position of the magnetic base, the dial rod and the dial indicator needle;

[0058] S4. Place the 3087049 piston skirt in the initial position in S2, then slowly move it along the direction of the positioning surface of the positioning block, and at the same time pay attention to the reading of the dial indicator. Record this reading when the dial indicator pointer swings to the maximum position;

[0059] S5. Take out the 3087049 piston skirt, rotate it 180 degrees and place it on the bottom plate 1 again, and press the rough surface of the inner cavity of the other thick skirt of the piston skirt against the positioning surface of the positioning block 2;

[0060] S6. Repeat the operation in S4;

[0061] S7. Compare the difference between the two readings, and the result is the symmetry of the two thick skirts of the 3087049 piston skirt.

[0062] Compared with the related technology, a piston symmetry quick inspection tool provided by the present invention has the following beneficial effects:

[0063] The present invention provides a rapid inspection tool for piston symmetry. By respectively arranging a positioning block 2 and a lever dial indicator 3 on both sides of the surface of the bottom plate 1, efficient, low-cost, and high-precision detection of the piston skirt symmetry can be achieved, which is applicable to mass production.

[0064] Second Embodiment

[0065] Please refer to Figure 6 and Figure 7 , based on a rapid inspection tool for piston symmetry provided in the first embodiment of the present application, the second embodiment of the present application proposes another rapid inspection tool for piston symmetry. The second embodiment is merely a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0066] Specifically, the difference of a rapid inspection tool for piston symmetry provided in the second embodiment of the present application is that, for a rapid inspection tool for piston symmetry, a concave movable groove 7 is opened on the surface of the bottom plate 1 and below the piston skirt body 4. A pulling assembly 5 is arranged inside the concave movable groove 7. The pulling assembly 5 includes a fixed rod 51, a movable sleeve 52, a fixing bolt 53, and a fixed bracket 54. The movable sleeve 52 is sleeved on the surface of the fixed rod 51, and the fixing bolt 53 is arranged between the movable sleeve 52 and the fixed rod 51.

[0067] The surface of the movable sleeve 52 is connected to the bottom of the lever dial indicator 3.

[0068] The fixed bracket 54 is connected to one end of the fixed rod 51.

[0069] A moving assembly 6 is arranged at the bottom of the inner wall of the concave movable groove 7. The moving assembly 6 includes a moving groove 61, a moving block 62, and a limiting bolt 63. The moving groove 61 is opened at the bottom of the inner wall of the concave movable groove 7. The moving block 62 is slidably connected inside the moving groove 61, and the limiting bolt 63 is arranged between the moving block 62 and the bottom plate 1.

[0070] The bottom of the fixed bracket 54 is connected to the moving block 62. A plurality of fixing holes adapted to the fixing bolt 53 are opened on the surface of the fixed rod 51. The use of the moving groove 61 and the moving block 62 can adjust the left and right positions of the fixed bracket 54. A plurality of limiting holes adapted to the limiting bolt 63 are opened on the surface of the bottom plate 1 and on the side opposite to the moving groove 61.

[0071] The working principle of a rapid inspection tool for piston symmetry provided by the present invention is as follows:

[0072] When in use, when adjusting the position of the lever dial indicator 3, first pull the lever dial indicator 3 to adjust the front and rear positions under the action of the movable sleeve 52 and the fixed rod 51. After adjusting the position of the lever dial indicator 3, use the fixing bolt 53 to pass through the movable sleeve 52 and connect it to the fixed rod 51.

[0073] After adjusting the position of the lever dial indicator 3, then pull the lever dial indicator 3 to drive the moving block 62 to adjust the left and right positions inside the moving groove 61 under the action of the fixed bracket 54. After adjusting the left and right positions of the lever dial indicator 3, use the limit bolt 63 to pass through the bottom plate 1 and connect it to the moving block 62 inside the moving groove 61.

[0074] Compared with the related art, a piston symmetry quick inspection tool provided by the present invention has the following beneficial effects:

[0075] The present invention provides a piston symmetry quick inspection tool. A concave movable groove 7 is opened on the surface of the bottom plate 1. The pulling assembly 5 and the moving assembly 6 are used in cooperation with the lever dial indicator 3, and the position of the lever dial indicator 3 can be adjusted according to the usage situation.

[0076] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A quick test tool for piston symmetry, characterized in that: include: A bottom plate, a positioning block and a lever dial indicator, wherein the positioning block is arranged on one side of the bottom plate surface; The lever dial indicator is arranged on the surface of the bottom plate and is located on one side of the positioning block.

2. The piston symmetry quick test tool according to claim 1 is characterized in that: A piston skirt body is arranged on the surface of the positioning block.

3. The piston symmetry quick test tool according to claim 2 is characterized in that: The positioning block is used to quickly and accurately position the piston skirt body.

4. The piston symmetry quick test tool according to claim 2 is characterized in that: The lever dial indicator is used to read the main body information of the piston skirt.

5. The piston symmetry quick test tool according to claim 1 is characterized in that: A concave movable groove is provided on the surface of the bottom plate and below the piston skirt body. A pulling assembly is provided inside the concave movable groove. The pulling assembly includes a fixed rod, a movable sleeve, a fixed bolt and a fixed bracket. The movable sleeve is provided on the surface of the fixed rod, and the fixed bolt is provided between the movable sleeve and the fixed rod.

6. The piston symmetry quick test tool according to claim 5, characterized in that: The fixing bracket is connected to one end of the fixing rod.

7. The piston symmetry quick test tool according to claim 1 is characterized in that: A moving component is arranged at the bottom of the inner wall of the concave movable groove, and the moving component includes a moving groove, a moving block and a limiting bolt. The moving groove is opened at the bottom of the inner wall of the concave movable groove, the moving block is slidably connected to the inside of the moving groove, and the limiting bolt is arranged between the moving block and the bottom plate.

8. The detection method of the piston symmetry rapid detection fixture according to any one of claims 1 to 7, characterized in that: Here are the steps: S1. Install the positioning block on the base plate and position it with bolts; S2, placing the piston to be tested on the bottom plate, pre-positioning through the hole in the inner cavity of the piston, and placing the inner cavity rough surface of the thick skirt edge of the piston skirt close to the positioning surface of the positioning block; S3. Place the lever dial indicator on the side of the piston skirt, and adjust the position of the magnetic base, the indicator rod and the dial indicator needle to ensure that the needle can contact the maximum outer diameter of the outer circle on the piston skirt; S4. Place the piston skirt in step 2 at the initial position, and then slowly move it along the positioning surface of the positioning block, while paying attention to the dial indicator reading. When the dial indicator pointer deflects to the maximum position, record this reading; S5. Take out the piston skirt, rotate it 180 degrees and place it on the bottom plate, and place the inner cavity blank surface of the other thick skirt edge of the piston skirt close to the positioning surface of the positioning block; S6, repeat step 4; S7. Compare the difference between the two readings, and the result is the symmetry of the two thick skirt edges of the piston skirt.

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