A method for batch processing of fan-shaped conical guide parts for ammunition storage racks

Abstract

This invention relates to a method for batch processing of fan-shaped conical guide parts for ammunition storage racks, belonging to the field of parts processing. It includes the following steps: process quota design and blank feeding, machining the end face of the part, turning the outer cylindrical surface and conical surface of the part, and turning the annular groove on the outer cylindrical surface of the part to the finished size. Using the process flow of this invention, individual parts are rationally arranged to form a ring-shaped part, and a large number of parts are machined on a lathe, and then milled into multiple pieces. Since turning is much more efficient than milling, and tooling allows for rapid clamping and positioning of parts, saving a significant amount of preparation time such as alignment and material handling, processing efficiency can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of parts processing, and specifically relates to a method for batch processing of fan-shaped conical guide parts for ammunition storage racks. Background Technology

[0002] The artillery ammunition storage rack is a square frame combined with fan-shaped guide components. Multiple tapered guide components are distributed circumferentially around the ammunition storage spaces for ammunition support and axial positioning. These parts have a fan-shaped structure; the outer arc is a stepped arc structure with a sloped section and annular groove, while the inner arc is a combination of straight sections and tapered sections with an inclined angle. Currently, due to their complex structure, these parts are generally machined on CNC machine tools using CNC programs and special forming tools, requiring multiple flipping and clamping operations. Because the parts are mostly curved, tapered, and inclined surfaces, straightening and alignment are difficult; furthermore, due to their irregular shape, the clamping reference surface is small, resulting in limited clamping capacity and requiring small cutting depths, leading to low efficiency. With the increasing demands for ammunition equipment in artillery operations, the batch production of guide components is also increasing. Therefore, there is an urgent need to invent a batch processing method to ensure part quality and improve production efficiency. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by the present invention is to provide a method for batch processing of fan-shaped conical guide parts for ammunition storage racks to solve the problem of low processing efficiency in the prior art.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides a method for batch processing of a sector-shaped conical guide component for an ammunition storage rack, comprising the following steps:

[0007] S1. Calculate the number of blank parts and distribute multiple blank parts along the circumferential direction.

[0008] S2. Use a three-jaw chuck on a lathe to clamp the blank parts and machine the outer end faces of multiple blank parts to be flush.

[0009] S3. Machining multiple blank parts by turning the outer cylindrical surface R1 and the corresponding α-angle conical surface in one turn;

[0010] S4. Turning and machining the annular groove R2 on the outer cylindrical surface of multiple blank parts;

[0011] S5. Remove the part to be processed, turn it around and clamp it, use a three-jaw chuck to hold the outer cylindrical surface R1 of the part to be processed and align it;

[0012] S6. Turn the end face thickness of the part to the finished size t;

[0013] S7. The inner hole R5 of the turning part is a straight section of the inner hole with a length of L, a β-angle conical surface corresponding to the inner hole, a fillet R3 at the intersection of the left end face and the arc of the straight section, and a fillet R6 at the intersection of the right end face and the β-angle conical surface.

[0014] S8. On a vertical machining center, the inner hole of the part machined by turning is used as a reference. The part is positioned by a special tooling for split milling, and the part is clamped by the positioning pin 3 and the pressure plate (2).

[0015] S9. Machining the stepped grooves and through holes on the parts to the finished dimensions;

[0016] S10. Divide the part into multiple pieces by milling.

[0017] The characteristic of this method is that the formula for calculating the number N of blank parts in step 1 is:

[0018]

[0019] Where R5 is the minimum radius of the inner hole of the finished part, γ is the angle of the two sides of the fan-shaped part, D is the diameter of the milling tool for the part, and the quantity calculation result is rounded to the nearest integer.

[0020] The blank part is an annular shape with an inner diameter of 2(R5-5)mm.

[0021] The thickness of the blank part is the thickness of the finished part t + 10mm.

[0022] The special tooling for milling parts in step 8 includes: a clamping body 1, a pressure plate 2, and a positioning pin 3;

[0023] The clamping body 1 is a plate-shaped body located at the bottom. A pressure plate 2 is provided above the clamping body 1. The pressure plate 2 is a circular cover with a hole at the center. A support rod is provided in the hole for connecting the clamping body 1. Holes are opened on the left and right sides of the center, and positioning pins 3 are provided in the holes. Grooves are evenly distributed on the circumference of the pressure plate 2 for positioning parts.

[0024] (III) Beneficial Effects

[0025] Compared with existing technologies, the present invention has the following advantages: The process flow of the present invention arranges individual parts into a ring-shaped part through reasonable arrangement, performs machining on a lathe on a large number of parts, and then mills them into multiple pieces. Since turning is much more efficient than milling, and tooling allows for rapid clamping and positioning of parts, saving significant preparation time for alignment and material handling, the processing efficiency can be greatly improved. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the sector-shaped conical guide component in this invention;

[0027] Figure 2 This is a schematic diagram of the fan-shaped conical guide component structure in this invention;

[0028] Figure 3 This is a schematic diagram of the disc part after processing in step S7 of this invention;

[0029] Figure 4 This is a schematic diagram of the special tooling for component milling in this invention. Detailed Implementation

[0030] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0031] This embodiment provides a method for batch processing of a sector-shaped conical guide component for an ammunition storage rack, including the following steps:

[0032] S1. Calculate the number of blank parts and distribute multiple blank parts along the circumferential direction.

[0033] S2. Use a three-jaw chuck on a lathe to clamp the blank parts and machine the outer end faces of multiple blank parts to be flush, with a cutting amount of 1mm.

[0034] S3. Machining multiple blank parts by turning the outer cylindrical surface R1 and the corresponding α-angle conical surface in one turn;

[0035] S4. Turning and machining the annular groove R2 on the outer cylindrical surface of multiple blank parts;

[0036] S5. Remove the part to be processed, turn it around and clamp it, use a three-jaw chuck to hold the outer cylindrical surface R1 of the part to be processed and align it;

[0037] S6. Turn the end face thickness of the part to the finished size t;

[0038] S7. The inner hole R5 of the turning part is a straight section of the inner hole with a length of L, a β-angle conical surface corresponding to the inner hole, a fillet R3 at the intersection of the left end face and the arc of the straight section, and a fillet R6 at the intersection of the right end face and the β-angle conical surface.

[0039] S8. On a vertical machining center, the inner hole of the part machined by turning is used as a reference. The part is positioned by a special tooling for split milling, and the part is clamped by the positioning pin 3 and the pressure plate 2.

[0040] S9. Machining the stepped grooves and through holes on the parts to the finished dimensions;

[0041] S10. Divide the part into multiple pieces by milling.

[0042] The characteristic of this method is that the formula for calculating the number N of blank parts in step 1 is:

[0043]

[0044] Where R5 is the minimum radius of the inner hole of the finished part, γ is the angle of the two sides of the fan-shaped part, D is the diameter of the milling tool for the part, and the quantity calculation result is rounded to the nearest integer.

[0045] The blank part is an annular shape with an outer diameter of 2×(R1+5)mm and an inner diameter of 2×(R5-5)mm.

[0046] The thickness of the blank part is the thickness of the finished part t plus a 10mm allowance.

[0047] The special tooling for milling parts in step 8 includes: a clamping body 1, a pressure plate 2, and a positioning pin 3;

[0048] The clamping body 1 is a plate-shaped body located at the bottom. A pressure plate 2 is provided above the clamping body 1. The pressure plate 2 is a circular cover with a hole at the center. A support rod is provided in the hole for connecting the clamping body 1. Holes are opened on the left and right sides of the center, and positioning pins 3 are provided in the holes. Grooves are evenly distributed on the circumference of the pressure plate 2 for positioning parts.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for batch processing of a sector-shaped conical guide component for an ammunition storage rack, characterized in that, Includes the following steps: S1: Calculate the number of blank parts and distribute multiple blank parts along the circumferential direction; S2: Use a three-jaw chuck on a lathe to clamp the blank parts and machine the outer end faces of multiple blank parts to be flush. S3: Turning multiple blank parts, including the outer cylindrical surface R1 and the corresponding α-angle conical surface, in one turn; S4: Turning to form the annular groove R2 on the outer cylindrical surface of multiple blank parts; S5: Remove the part to be processed, turn it around and clamp it, use a three-jaw chuck to hold the outer cylindrical surface R1 of the part to be processed and align it; S6: Turning the end face thickness of the part to the finished size t; S7: The inner hole R5 of the turning part, the inner hole of the straight segment of length L, the β-angle conical surface corresponding to the inner hole, the fillet R3 at the intersection of the left end face and the arc of the straight segment, and the fillet R6 at the intersection of the right end face and the β-angle conical surface. S8: On a vertical machining center, the inner hole of the part machined by turning is used as a reference. The part is positioned by a special tooling for split milling, and the part is clamped by a positioning pin (3) and a pressure plate (2). S9: Machining the stepped grooves and through holes on the parts to the finished dimensions; S10: Divide the part into multiple pieces by milling.

2. The method for batch processing of the fan-shaped conical guide component of the ammunition storage rack as described in claim 1, characterized in that, The formula for calculating the quantity N of blank parts in step 1 is as follows: Where R5 is the minimum radius of the inner hole of the finished part, γ is the angle of the two sides of the fan-shaped part, D is the diameter of the milling tool for the part, and the quantity calculation result is rounded to the nearest integer.

3. The method for batch processing of the fan-shaped conical guide part of the ammunition storage rack as described in claim 2, wherein the blank part is an annular shape and the inner hole diameter is set to 2(R5-5)mm.

4. The method for batch processing of the fan-shaped conical guide component of the ammunition storage rack as described in claim 3, characterized in that, The thickness of the blank part is the finished part thickness t + 10mm.

5. The method for batch processing of the sector-shaped conical guide component of the ammunition storage rack as described in claim 1, characterized in that, The special tooling for part milling in step 8 includes: a clamping body (1), a pressure plate (2), and a positioning pin (3); The clamping body (1) is a plate-shaped body set at the bottom. A pressure plate (2) is provided above the clamping body (1). The pressure plate (2) is a circular cover with a hole at the center. A support rod is provided in the hole for connecting the clamping body (1). Holes are opened on the left and right sides at the center. A positioning pin (3) is provided in the hole. Grooves are evenly distributed on the circumference of the pressure plate (2) for positioning parts.

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