A grinding and measuring tool and grinding method for marine anchor pin shaft hole

Abstract

The invention discloses a grinding and measuring tool and grinding method for a marine anchor pin hole. The measuring tool comprises a profiling ruler and a T-shaped ruler. Profiling fillets are arranged at both ends of the upper measuring edge of the profiling ruler. The length of the measuring edge of the profiling ruler is the same as the length of the pin shaft, and the radius of the profiling fillet is the same as the radius of the end face fillet of the pin shaft. The T-shaped ruler comprises a horizontal ruler and a vertical ruler extending vertically upward from the middle of the upper edge of the horizontal ruler. The horizontal ruler has the same shape as the profiling ruler, and the length of the vertical ruler is greater than or equal to the distance from the pin shaft hole to the highest point of the anchor body. Through the measuring tool and grinding method of the present application, the grinding accuracy of the inner hole of the pin shaft hole is guaranteed, and the assembly quality of the anchor rod, the pin shaft and the anchor body is ensured.

Description

Technical Field

[0001] The invention relates to ship processing and detection technology, in particular to a grinding and measuring tool for a ship anchor pin shaft hole and a grinding method. Background Art

[0002] The pin shaft hole of a marine anchor is designed to be a regular cylinder. During the casting process, due to process requirements, the pin shaft hole is cast in a tapered shape with a small inside and a large outside, and must be trimmed to the same cylindrical shape on both sides. However, the position of the pin shaft hole in the marine anchor is not convenient for machining and can only be polished and trimmed manually. The original measuring tool only used a ruler, the length of the ruler is shorter than the length of the pin shaft, and the two ends of the ruler are straight without rounded corners. It is difficult to ensure the shape and size of the pin shaft hole after polishing, and the assembly quality of the pin shaft hole, anchor rod, and pin shaft is also difficult to ensure.

[0003] See also Figure 7 After the pin hole is polished, use a ruler 7 to measure the pin hole to control the pin hole shape and the ruler gap h1≤2mm. Because the ruler length is shorter than the pin and the pin hole length, only the local shape of the pin hole and the ruler gap h1≤2mm can be guaranteed. It is difficult to ensure that the overall shape of the pin hole is cylindrical, and the assembly quality of the pin hole, anchor rod and pin is also difficult to guarantee. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a grinding and measuring tool and a grinding method for a marine anchor pin shaft hole, which can solve the above-mentioned problems.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A tool for grinding and measuring anchor pin shaft holes for ships, comprising a profiling ruler and a T-shaped ruler, wherein profiling fillets are arranged at both ends of the upper measuring edge of the profiling ruler, the measuring edge length of the profiling ruler is the same as the length of the pin shaft, and the radius of the profiling fillet is the same as the radius of the end face fillet of the pin shaft; the T-shaped ruler comprises a horizontal ruler and a vertical ruler extending vertically upward from the middle of the upper edge of the horizontal ruler, the horizontal ruler has the same appearance as the profiling ruler, and the length of the vertical ruler is greater than or equal to the distance from the pin shaft hole to the highest point of the anchor body.

[0007] A method for grinding the auxiliary pin hole according to the above-mentioned measuring tool, the method comprising:

[0008] S1 clamps the anchor body and uses a grinding head to perform primary grinding on the pin shaft hole;

[0009] S2 uses a profiling ruler to control the horizontality of the upper wall of the pin hole. The upper measuring edge of the profiling ruler is pressed against the upper wall of the pin hole. The two profiling fillets are engaged with the circular hole end surface of the pin hole. The gap h between the measuring edge of the profiling ruler and the upper wall of the pin hole is controlled by grinding with a grinding head until the set requirements are met.

[0010] S3 uses a T-shaped ruler to control the verticality of the pin hole and the anchor rod. The upper side of the horizontal ruler of the T-shaped ruler is clamped on the upper wall of the pin hole. The distance a and distance b between the vertical ruler and the highest point on both sides of the anchor body are measured with a profiling ruler. The pin hole is polished with a polishing head to control the size difference of the distance a and the distance b to meet the set requirements.

[0011] S4 repeats steps S2 and S3 until the gap h and the size difference between the spacing a and the spacing b meet the set requirements, and the grinding of the pin shaft hole is completed.

[0012] Preferably, the setting requirement of the gap h is gap h≦2mm.

[0013] Preferably, the size difference design requirement between the spacing a and the spacing b is ≤3 mm.

[0014] Compared with the prior art, the beneficial effect of the present invention is that the grinding accuracy of the inner hole of the pin shaft hole is guaranteed by the measuring tool and grinding method of the present application, thereby ensuring the assembly quality of the anchor rod, the pin shaft and the anchor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of measuring using a contour ruler of a measuring tool;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross section of the pin hole at AA in the middle;

[0017] Figure 3 It is a structural schematic diagram of a profiling ruler;

[0018] Figure 4 It is a schematic diagram of measuring with a T-ruler;

[0019] Figure 5 It is a structural schematic diagram of a T-shaped ruler;

[0020] Figure 6 Assembly drawing for anchor;

[0021] Figure 7 Schematic diagram of traditional anchor pin shaft hole grinding auxiliary measurement.

[0022] In the figure: 1. anchor body; 2. contour ruler; 3. pin hole; 4. T-shaped ruler; 5. anchor rod; 6. pin; 7. ruler. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 6 The anchor comprises an anchor body 1, a pin hole 3 is provided at the middle connection of the anchor body 1, and an anchor rod 5, the lower end of the anchor rod 5 is installed in the pin hole 3 of the anchor body 1 through a pin 6. In order to ensure the accurate welding of the anchor rod 5 and the anchor body 1, a Figure 1-Figure 5 The measuring tool is used for measuring the pin shaft hole when grinding the anchor, and the measuring tool comprises a profiling ruler 2 and a T-shaped ruler 4.

[0025] Among them, profiling fillets 21 are set at both ends of the upper measuring edge of the profiling ruler 2 to ensure that the end face fillet of the clamping pin shaft hole 3 ensures the overall cylindricity; the measuring edge length of the profiling ruler 2 is the same as the length of the pin shaft 6, and the radius of the profiling fillet 21 is the same as the radius of the end face fillet of the pin shaft 6.

[0026] The T-shaped ruler 4 includes a horizontal ruler 41 and a vertical ruler 42 extending vertically upward from the middle of the upper side of the horizontal ruler 41. The horizontal ruler 41 has the same shape as the contour ruler 2, and the length of the vertical ruler 42 is greater than or equal to the distance from the pin shaft hole 3 to the highest point of the anchor body 1.

[0027] The method for grinding the pin shaft hole using the above-mentioned measuring tool auxiliary includes the following steps.

[0028] S1 clamps the anchor body 1 and uses a grinding head to perform primary grinding on the pin shaft hole 3.

[0029] S2 uses the profiling ruler 2 to control the horizontality of the upper wall of the pin hole 3, places the upper measuring edge of the profiling ruler 2 against the upper wall of the pin hole 3, and the two profiling fillets 21 engage with the circular hole end surface of the pin hole 3, and controls the gap h between the measuring edge of the profiling ruler 2 and the upper wall of the pin hole 3 by grinding with the grinding head until the set requirements are met.

[0030] The setting requirement of the gap h is that the gap h≦2mm.

[0031] S3 uses a T-shaped ruler 4 to control the verticality of the pin hole 3 and the anchor rod 5. The upper side of the horizontal ruler 41 of the T-shaped ruler 4 is clamped on the upper wall of the pin hole 3. The profiling ruler 2 is used to measure the distance a and the distance b between the vertical ruler 42 and the highest point on both sides of the anchor body 1. The pin hole 3 is polished by a polishing head to control the size difference of the distance a and the distance b to meet the set requirements.

[0032] The design requirement for the size difference between the spacing a and the spacing b is that the size difference is ≤3 mm.

[0033] S4 repeats steps S2 and S3 until the gap h and the size difference between the spacing a and the spacing b meet the set requirements, and the grinding of the pin shaft hole 3 is completed.

[0034] By means of the above method or the grinding process with auxiliary measurement, the grinding accuracy of the inner hole of the pin shaft hole 3 is ensured, and the assembly quality of the anchor rod 5, the pin shaft 6 and the anchor body 1 is ensured.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for grinding a pin hole using a measuring tool, comprising a measuring tool for grinding a marine anchor pin hole, the measuring tool comprising a profiling ruler (2) and a T-shaped ruler (4), profiling fillets (21) being arranged at both ends of the upper measuring edge of the profiling ruler (2), the measuring edge length of the profiling ruler (2) being the same as the length of the pin (6), the radius of the profiling fillet (21) being the same as the radius of the end face fillet of the pin (6); the T-shaped ruler (4) comprising a horizontal ruler (41) and a vertical ruler (42) extending vertically upward from the middle of the upper edge of the horizontal ruler (41), the horizontal ruler (41) having the same shape as the profiling ruler (2), the length of the vertical ruler (42) being greater than or equal to the distance between the pin hole (3) and the highest point of the anchor body (1); It is characterized in that Methods include: S1 Clamp the anchor body (1) and use a grinding head to perform primary grinding on the pin shaft hole (3); S2 uses a profiling ruler (2) to control the horizontality of the upper wall surface of the pin shaft hole (3), places the upper measuring edge of the profiling ruler (2) against the upper wall surface of the pin shaft hole (3), engages the two profiling fillets (21) with the circular hole end surface of the pin shaft hole (3), and controls the clearance h between the measuring edge of the profiling ruler (2) and the upper wall surface of the pin shaft hole (3) by grinding with a grinding head until the set requirement is met; S3 A T-shaped ruler (4) is used to control the verticality of the pin hole (3) and the anchor rod (5). The upper side of the horizontal ruler (41) of the T-shaped ruler (4) is clamped on the upper wall of the pin hole (3). The distance a and the distance b between the vertical ruler (42) and the highest point on both sides of the anchor body (1) are measured with a profiling ruler (2). The pin hole (3) is polished with a polishing head to control the size difference of the distance a and the distance b to meet the set requirements. S4 Repeat steps S2 and S3 until the gap h and the size difference between the spacing a and the spacing b meet the set requirements, and the grinding of the pin shaft hole (3) is completed.

2. The grinding method according to claim 1, characterized in that: The setting requirement of the gap h is gap h≦2mm.

3. The grinding method according to claim 1 or 2, characterized in that: The design requirement for the size difference between the spacing a and the spacing b is that the size difference is ≤3 mm.

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