High-precision positioning mechanism for intermediate hole in engine block and positioning processing method

Abstract

The present application relates to the field of positioning facilities, especially to a high-precision positioning mechanism for intermediate holes in an internal combustion engine body and a positioning processing method, comprising a threaded rod, three positioning claws are arranged in an annular array at the rear end of the threaded rod, a bubble level is fixedly installed on the side surface of the lower positioning claw, an adjusting piece is arranged between the three positioning claws and the threaded rod, a connecting sleeve is coaxially and rotatably embedded on the front surface of the threaded rod, a length measuring scale is fixedly installed on the side surface of the connecting sleeve, a positioning marker is arranged on the outer side of the length measuring scale, an angle measuring scale is coaxially arranged on the front part of the threaded rod, a pointer is fixedly installed at the rear end of the length measuring scale, and the pointer is located in front of the angle measuring scale. The present application improves the positioning efficiency of the intermediate holes, meets the positioning requirements of the intermediate holes, and can adapt to positioning of intermediate holes with different diameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of positioning facilities, in particular to a high-precision positioning mechanism for intermediate holes in an internal combustion engine body and a positioning machining method. BACKGROUND

[0002] An internal combustion engine is a kind of power machinery, which is a heat engine that converts thermal energy directly into mechanical work by burning fuel inside a machine. When machining the intermediate holes on the internal combustion engine body, the staff needs to measure and position the position of the intermediate hole according to the position of the main intermediate hole on the internal combustion engine body by referring to the design drawing and holding a length and angle measuring ruler before each machining. Since the positioning needs to be measured each time, the positioning efficiency of the intermediate hole is low. SUMMARY

[0003] The present application aims to solve the problems in the background art and provides a high-precision positioning mechanism for intermediate holes in an internal combustion engine body and a positioning machining method.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a high-precision positioning mechanism for intermediate holes in an internal combustion engine body, comprising a threaded rod, three positioning claws are arranged in an annular array at the rear end of the threaded rod, a bubble level is fixedly installed on the side surface of the lower positioning claw, an adjusting piece is arranged between the three positioning claws and the threaded rod, a connecting sleeve is coaxially embedded on the front part of the outer surface of the threaded rod, a length measuring ruler is fixedly installed on the side surface of the connecting sleeve, a positioning marker is arranged on the outside of the length measuring ruler, an angle measuring ruler is coaxially arranged on the front part of the threaded rod, a pointer is fixedly installed at the rear end of the length measuring ruler, and the pointer is located in front of the angle measuring ruler.

[0005] Preferably, a through hole is formed through the front end surface of the angle measuring ruler, the through hole corresponds to the pointer, and a transparent plate is embedded in the through hole.

[0006] Preferably, an L-shaped bracket is fixedly installed on the side of the front end through hole of the angle measuring ruler, a fixing disc is coaxially embedded on the front of the connecting sleeve of the outer surface of the threaded rod, a threaded hole is formed through the end of the L-shaped bracket, a threaded column is screwed through the inside of the threaded hole, and the rear end of the threaded column is tightly pressed against the fixing disc.

[0007] Preferably, a first hand wheel is coaxially fixedly installed on the front end of the threaded column, a second hand wheel is coaxially fixedly installed on the front end of the threaded rod, and the end of the pointer is aligned with the axis of the threaded rod.

[0008] Preferably, the adjusting component includes a bearing sleeve coaxially rotatably mounted on the rear end of the threaded rod. Three guide seats are fixedly mounted in a ring array on the outer surface of the bearing sleeve. Three guide plates are respectively fitted inside the three guide seats, and the ends of the three guide plates are respectively fixedly connected to three positioning claws.

[0009] Preferably, three fixing frames are fixedly installed in a ring array on the outer surface of the bearing sleeve. The ends of the fixing frames are fixed to the angle measuring ruler. The fixing frames are offset from the guide seat. A threaded sleeve is screwed onto the outer surface of the threaded rod. Three lugs extend from the outer surface of the threaded sleeve in a ring array. An adjusting frame is rotatably installed at the end of the lugs. The end of the adjusting frame is rotatably connected to the upper end of the positioning claw.

[0010] Preferably, the positioning marker includes an adjustment frame that fits and is mounted on the outer surface of the length measuring ruler. A threaded ring is embedded through the upper end of the adjustment frame, and a bolt is screwed through the inside of the threaded ring. The rear end of the bolt is pressed against the length measuring ruler. A connecting frame is fixedly installed on both the upper and lower end faces of the adjustment frame, and a support platform is fixedly installed at the end of the connecting frame.

[0011] Preferably, a fixed shell is fitted through the interior of the support platform, a pressure seat is fixedly installed at the upper end of the fixed shell, a spring body is wound around the outside of the fixed shell, and the two ends of the spring body are respectively fixed to the pressure seat and the support platform. A marking pen is fixedly installed inside the fixed shell, and the marking pen extends from the rear end of the fixed shell. A pressure frame is fixedly installed at the front end of the pressure seat, the length measuring ruler passes through the interior of the pressure frame, the end of the pointer is aligned with the end of the marking pen, and the measuring surface of the adjustment frame is aligned with the end of the marking pen.

[0012] A method for locating and machining intermediate holes in an internal combustion engine block is also provided, comprising the following steps:

[0013] S1: Measure the length based on the angle and length of the intermediate hole relative to the main intermediate hole on the design drawings.

[0014] Adjust the position of the measuring tape and adjustment frame;

[0015] S2: After adjustment, insert the three positioning claws on the threaded rod into the main bore on the internal combustion engine body;

[0016] S3: Then press the pressure frame to move the marking pen on the internal combustion engine body to draw the center point of the intermediate hole, and then the machining can be carried out according to the positioned center point.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The three positioning claws on the threaded rod are inserted into the main intermediate holes on the internal combustion engine body, then are rotated to the horizontal state according to the indication of the bubble level, at this time, the marking pen moves on the internal combustion engine body to draw the hole center point of the intermediate hole, thus the accurate positioning of the intermediate hole is completed, the operation is simple, and the positioning efficiency of the intermediate hole is effectively improved.

[0019] 2. By loosening the bolt, the bolt is separated from the length measuring scale, the adjusting frame can slide on the length measuring scale to adjust the length position of the marking pen to adapt to the distance between the hole centers of different main intermediate holes and intermediate holes, meanwhile, the threaded column is loosened to separate the threaded column from the fixed disc, the length measuring scale can rotate around the threaded rod to adjust the angle position of the marking pen to adapt to the angle between the hole centers of different main intermediate holes and intermediate holes, thus the positioning requirement of the intermediate hole is met.

[0020] 3. By directly rotating the threaded rod, the threaded sleeve screwed on the threaded rod moves, and drives the adjusting frame to push the three positioning claws at the same time, at this time, the guide plate is tightly attached to the guide seat to slide to assist the movement of the positioning claws, thus the distance between the three positioning claws is adjusted to adapt to the positioning of different aperture main intermediate holes. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0022] Figure 2 It is a schematic view of the threaded rod of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0023] Figure 3 It is a schematic view of the L-shaped frame of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0024] Figure 4 It is a schematic view of the connecting frame of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0025] Figure 5 It is a use view of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0026] Figure 6 It is a use view of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application; Figure 5 It is an enlarged view of A in the use view of the intermediate hole high-precision positioning mechanism of the internal combustion engine body of the present application;

[0027] In the diagram: 1. Threaded rod; 2. Length measuring ruler; 3. Connecting bracket; 4. Positioning claw; 5. Bubble level; 6. Guide plate; 7. Guide seat; 8. Bearing sleeve; 9. Fixing bracket; 10. Angle measuring ruler; 11. Threaded sleeve; 12. Lug; 13. Adjusting frame; 14. Connecting sleeve; 15. Main intermediate hole; 16. L-shaped frame; 17. Fixing plate; 18. Threaded hole; 19. Threaded column; 20. Handwheel No. 1; 21. Handwheel No. 2; 22. Internal combustion engine body; 23. Through hole; 24. Transparent plate; 25. Pointer; 26. Adjusting frame; 27. Threaded ring; 28. Bolt; 29. ​​Pressure seat; 30. Fixing shell; 31. Bearing platform; 32. Spring body; 33. Marking pen; 34. Pressure bracket; 35. Intermediate hole. Detailed Implementation

[0028] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0029] like Figures 1-6 The high-precision positioning mechanism for an intermediate hole in an internal combustion engine block, as shown, includes a threaded rod 1. Three positioning claws 4 are arranged in a circular array at the rear end of the threaded rod 1. The positioning claws 4 serve to restrict the threaded rod 1 to the center position of the main intermediate hole 15. A bubble level 5 is fixedly installed on the side of the lower positioning claws 4, which helps to level the mechanism for angle identification. An adjusting element is provided between the three positioning claws 4 and the threaded rod 1. A connecting sleeve 14 is coaxially rotatably embedded in the front of the outer surface of the threaded rod 1, serving as a connection. A length measuring ruler 2 is fixedly installed on the side of the connecting sleeve 14, serving to measure length. A positioning mark is provided on the outer side of the length measuring ruler 2. An angle measuring ruler 10 is coaxially arranged at the front of the threaded rod 1. A pointer 25 is fixedly installed at the rear end of the length measuring ruler 2, located in front of the angle measuring ruler 10, which serves to measure angle.

[0030] An angle measuring ruler 10 has a through hole 23 on its front end face. The through hole 23 facilitates viewing the value indicated by the pointer 25. The through hole 23 corresponds to the pointer 25, and a transparent plate 24 is embedded inside the through hole 23.

[0031] The side of the front end through hole 23 of the angle measuring ruler 10 is fixedly provided with an L-shaped frame 16, which serves as a bearing for the threaded column 19. The front end of the outer surface of the threaded rod 1 is coaxially embedded with a fixed disc 17. The end of the L-shaped frame 16 is provided with a threaded hole 18. The inside of the threaded hole 18 is screwed with the threaded column 19. The threaded hole 18 serves as a cooperation with the threaded column 19. The rear end of the threaded column 19 is tightly pressed against the fixed disc 17, which can fix the length measuring ruler 2.

[0032] The front end of the threaded column 19 is coaxially fixedly provided with a first hand wheel 20, which serves as a bearing for the threaded column 19. The front end of the threaded rod 1 is coaxially fixedly provided with a second hand wheel 21, which serves as a bearing for the threaded rod 1. The end of the pointer 25 is aligned with the axis of the threaded rod 1, which can accurately indicate the angle between the hole center of the main hole 15 and the hole center of the intermediate hole 35.

[0033] The adjusting member includes a bearing sleeve 8 coaxially and rotatably installed at the rear end of the threaded rod 1. The outer surface of the bearing sleeve 8 is annularly and fixedly provided with three guide seats 7. The inside of the three guide seats 7 is respectively and fixedly provided with three guide plates 6. The guide seats 7 and the guide plates 6 serve as a straight-line guide for the positioning claws 4. The ends of the three guide plates 6 are respectively and fixedly connected with the three positioning claws 4.

[0034] The outer surface of the bearing sleeve 8 is annularly and fixedly provided with three fixed frames 9. The ends of the fixed frames 9 are fixed with the angle measuring ruler 10. The fixed frames 9 serve as a fixing for the angle measuring ruler 10. The fixed frames 9 are disposed in a staggered manner with the guide seats 7. The outer surface of the threaded rod 1 is screwed with a threaded sleeve 11. The outer surface of the threaded sleeve 11 is annularly and extended with three lugs 12. The threaded sleeve 11 serves as a movement for the adjusting frame 13. The ends of the lugs 12 are rotatably provided with the adjusting frame 13. The lugs 12 serve as a connection. The ends of the adjusting frame 13 are rotatably connected with the upper ends of the positioning claws 4.

[0035] The positioning marker member includes an adjusting frame 26 fixedly provided on the outer surface of the length measuring ruler 2. The upper end of the adjusting frame 26 is embedded with a threaded ring 27. The inside of the threaded ring 27 is screwed with a bolt 28. The threaded ring 27 serves as a cooperation with the bolt 28. The rear end of the bolt 28 is tightly pressed against the length measuring ruler 2. The bolt 28 serves as a fixing for the adjusting frame 26. The upper and lower end faces of the adjusting frame 26 are fixedly provided with a connecting frame 3. The ends of the connecting frame 3 are fixedly provided with a bearing table 31. The connecting frame 3 serves as a fixing for the bearing table 31.

[0036] The inside of the bearing table 31 is fitted with a fixed shell 30, the upper end of the fixed shell 30 is fixedly installed with a pressing seat 29, the fixed shell 30 plays a role of guiding and bearing the marker pen 33, the outside of the fixed shell 30 is wound with a spring body 32, the two ends of the spring body 32 are fixed with the pressing seat 29 and the bearing table 31 respectively, the spring body 32 plays a role of lifting the marker pen 33, the inside of the fixed shell 30 is fixedly installed with the marker pen 33, the marker pen 33 extends from the rear end of the fixed shell 30, the front end of the pressing seat 29 is fixedly installed with a pressing frame 34, the length measuring ruler 2 penetrates the inside of the pressing frame 34, the pressing frame 34 plays a role of facilitating the pressing of the marker pen 33, the end of the pointer 25 is aligned with the end of the marker pen 33, the measuring surface of the adjusting frame 26 is aligned with the end of the marker pen 33, so that the measured length and angle are the same as the position marked by the marker pen 33.

[0037] A method for positioning and machining an intermediate hole in an internal combustion engine body is also provided, comprising the following steps:

[0038] S1: According to the angle and length of the intermediate hole 35 on the design drawing relative to the main hole 15, adjust the positions of the length measuring ruler 2 and the adjusting frame 26;

[0039] S1: According to the angle and length of the intermediate hole 35 on the design drawing relative to the main hole 15, adjust the positions of the length measuring ruler 2 and the adjusting frame 26;

[0040] S2: After adjustment, insert the three positioning claws 4 on the threaded rod 1 into the main hole 15 on the internal combustion engine body 22;

[0041] S3: Then press the pressing frame 34, move the marker pen 33 on the internal combustion engine body 22 to draw the hole center point of the intermediate hole 35, and then process according to the positioned hole center point.

[0042] When positioning, the threaded rod 1 is rotated according to the aperture size of the main hole 15, so that the threaded sleeve 11 screwed on the threaded rod 1 moves, and further drives the adjusting shelf 13 to move to simultaneously push the three positioning claws 4, at this time, the guide plate 6 is tightly attached to the guide seat 7 to slide, to assist the movement of the positioning claws 4, so as to adjust the distance between the three positioning claws 4 to adapt to the aperture of the main hole 15, then according to the angle of the intermediate hole 35 on the design drawing located in the main hole 15, the threaded column 19 is loosened, so that the threaded column 19 is separated from the fixing disc 17, and the length measuring ruler 2 can rotate around the threaded rod 1 as the center to adjust the angle position of the marker pen 33 to adapt to the angle, then according to the length of the intermediate hole 35 on the design drawing located in the main hole 15, the bolt 28 is loosened, so that the bolt 28 is separated from the length measuring ruler 2, and the adjusting frame 26 can slide on the length measuring ruler 2 to adjust the length position of the marker pen 33 to adapt to the angle, after the adjustment is completed, the three positioning claws 4 on the threaded rod 1 are inserted into the main hole 15 on the internal combustion engine body 22, then the bubble level 5 is adjusted to the horizontal state according to the indication, at this time, the pressing frame 34 is pressed, so that the marker pen 33 moves on the internal combustion engine body 22 to draw the hole center point of the intermediate hole 35, and the accurate positioning of the intermediate hole 35 is completed.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A high-precision positioning mechanism for intermediate holes in an internal combustion engine block, characterized in that: The device includes a threaded rod (1), with three positioning claws (4) arranged in a ring array at the rear end of the threaded rod (1). A bubble level (5) is fixedly installed on the side of the positioning claws (4) located at the lower part. An adjusting element is provided between the three positioning claws (4) and the threaded rod (1). A connecting sleeve (14) is coaxially rotatably embedded in the front of the outer surface of the threaded rod (1). A length measuring ruler (2) is fixedly installed on the side of the connecting sleeve (14). A positioning mark is provided on the outer side of the length measuring ruler (2). An angle measuring ruler (10) is coaxially arranged at the front of the threaded rod (1). A pointer (25) is fixedly installed at the rear end of the length measuring ruler (2). The pointer (25) is located in front of the angle measuring ruler (10). The front end face of the angle measuring ruler (10) is provided with a through hole (23), which corresponds to the pointer (25), and a transparent plate (24) is embedded inside the through hole (23). An L-shaped bracket (16) is fixedly installed on the side of the front through hole (23) of the angle measuring ruler (10). A fixed plate (17) is coaxially embedded in front of the connecting sleeve (14) on the outer surface of the threaded rod (1). A threaded hole (18) is opened through the end of the L-shaped bracket (16). A threaded column (19) is screwed through the inside of the threaded hole (18). The rear end of the threaded column (19) is pressed against the fixed plate (17). The front end of the threaded column (19) is coaxially fixed with a first handwheel (20), the front end of the threaded rod (1) is coaxially fixed with a second handwheel (21), and the end of the pointer (25) is aligned with the axis of the threaded rod (1). The adjusting component includes a bearing sleeve (8) coaxially rotatably mounted on the rear end of the threaded rod (1). Three guide seats (7) are fixedly mounted in a ring array on the outer surface of the bearing sleeve (8). Three guide plates (6) are respectively fitted inside the three guide seats (7). The ends of the three guide plates (6) are respectively fixedly connected to three positioning claws (4). The outer surface of the bearing sleeve (8) is fixedly mounted with three fixed frames (9) in a ring array. The ends of the fixed frames (9) are fixed to the angle measuring ruler (10). The fixed frames (9) and the guide seat (7) are offset. The outer surface of the threaded rod (1) is screwed with a threaded sleeve (11). The outer surface of the threaded sleeve (11) has three lugs (12) extending in a ring array. The ends of the lugs (12) are rotatably mounted with an adjusting frame (13). The ends of the adjusting frame (13) are rotatably connected to the upper end of the positioning claw (4). The positioning marker includes an adjustment frame (26) that fits and is installed on the outer surface of the length measuring ruler (2). A threaded ring (27) is embedded through the upper end of the adjustment frame (26). A bolt (28) is screwed through the inside of the threaded ring (27). The rear end of the bolt (28) is pressed against the length measuring ruler (2). A connecting frame (3) is fixedly installed on both the upper and lower end faces of the adjustment frame (26). A bearing platform (31) is fixedly installed at the end of the connecting frame (3). A fixed shell (30) is fitted through the inside of the support platform (31). A pressure seat (29) is fixedly installed at the upper end of the fixed shell (30). A spring body (32) is wound around the outside of the fixed shell (30). The two ends of the spring body (32) are fixed to the pressure seat (29) and the support platform (31) respectively. A marker pen (33) is fixedly installed inside the fixed shell (30). The marker pen (33) extends from the rear end of the fixed shell (30). A pressure frame (34) is fixedly installed at the front end of the pressure seat (29). The length measuring ruler (2) passes through the inside of the pressure frame (34). The end of the pointer (25) is aligned with the end of the marker pen (33). The measuring surface of the adjustment frame (26) is aligned with the end of the marker pen (33). Method for locating and machining intermediate holes in internal combustion engine blocks. Includes the following steps: S1: Adjust the position of the length measuring ruler (2) and the adjustment frame (26) according to the angle and length of the intermediate hole (35) on the main intermediate hole (15) on the design drawing; S2: After adjustment, insert the three positioning claws (4) on the threaded rod (1) into the main bore (15) on the internal combustion engine body (22); S3: Then press the pressure frame (34) to move the marker pen (33) on the internal combustion engine body (22) to draw the center point of the intermediate hole (35), and then the machining can be carried out according to the center point of the hole.

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