Multi-angle combined machining tool for polyhedral infrared guide shell

Abstract

The invention discloses a polyhedral infrared guide shell multi-angle joint machining tool, and relates to the technical field of machining, the polyhedral infrared guide shell multi-angle joint machining tool comprises a polyhedral guide shell, four tools are arranged on the outer side edge of the polyhedral guide shell, and four elastic L-shaped plates are arranged on the outer side edge of each tool; the multi-angle structural characteristic of the polyhedral infrared guide shell is utilized, the angle of the polyhedral infrared guide shell is converted on the tool design, machining can be achieved on a common machining center, the efficiency is high, the machining precision is high, the machining precision is high, and the machining cost is low. And moreover, the device has a mistake proofing function, the economic cost is 1 / 4 of that of high-precision five-axis equipment, the processing cost is greatly reduced, and profit values are created for companies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a multi-angle machining tool for a multi-faceted infrared guidance shell. BACKGROUND

[0002] The multi-faceted infrared guidance shell is a guidance means based on infrared radiation detection and target recognition. Its core is to use the optical characteristics of the multi-faceted structure and algorithm model to achieve accurate processing and tracking of complex infrared signals. Its characteristics and advantages are widely used in the field of military equipment, and its market prospect is good, and the demand is large.

[0003] During the manufacturing process of the front-end structural part of the multi-faceted infrared guidance shell, it is always in the industry bottleneck, and most of them rely on the multi-angle machining of the high-precision five-axis equipment cutter head turning function. Multiple parts cannot be machined at one time. Not only is the time-consuming long, but also the cost is high, which causes a large economic burden to the company, and the economic benefit is consumed by the expensive equipment cost. SUMMARY

[0004] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a multi-angle machining tool for a multi-faceted infrared guidance shell.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a multi-angle machining tool for a multi-faceted infrared guidance shell, comprising a multi-faceted guidance shell, four toolings are arranged on the outer edge of the multi-faceted guidance shell, four elastic L-shaped plates are arranged on the outer edge of each tooling, one side of the elastic L-shaped plate away from the tooling is fixedly connected to the outer edge of the multi-faceted guidance shell, a connecting groove is formed in each elastic L-shaped plate, a threaded rod is penetratingly arranged in each connecting groove, one end of the threaded rod is fixedly connected to the outer edge of the multi-faceted guidance shell, and a nut is threadedly connected to the outer edge of the threaded rod. The outer edges of the four adjacent elastic L-shaped plates are attached to the outer edges of the adjacent toolings.

[0006] Preferably, four mounting holes are formed in the outer edge of each tooling, and a reference hole is formed in the center of the top of the multi-faceted guidance shell.

[0007] Preferably, a disc is arranged at the bottom of the multi-faceted guidance shell, a support column is fixedly connected to the center of the bottom of the disc, four sliding blocks are fixedly connected to the bottom of the multi-faceted guidance shell, and an annular groove is formed in the top of the disc near the outer edge. The four sliding blocks are movably connected in the annular groove.

[0008] Preferably, a plurality of through holes are formed in the inner cavity of the disc, and a plurality of insertion holes are formed in the bottom of the multi-faceted guidance shell. The through holes and the insertion holes are arranged in communication with each other.

[0009] Preferably, the support column front side is provided with a connecting disc, the top of the connecting disc is fixedly connected with an insertion rod, the insertion rod penetrates through the adjacent through hole and is inserted into the adjacent insertion hole.

[0010] Preferably, the bottom of the connecting disc is fixedly connected with a transverse plate, the front side of the transverse plate is fixedly connected with a pedal, the outer side edge of the insertion rod is sleeved with a spring, the top end of the spring is fixedly connected with the bottom of the disc, and the bottom end of the spring is fixedly connected with the top of the connecting disc.

[0011] Preferably, the bottom of the connecting disc is fixedly connected with a transverse plate, the front side of the transverse plate is fixedly connected with a pedal, the outer side edge of the insertion rod is sleeved with a spring, the top end of the spring is fixedly connected with the bottom of the disc, and the bottom end of the spring is fixedly connected with the top of the connecting disc.

[0012] Compared with the prior art, the beneficial effects of the present application are: The present application utilizes the multi-angle structural characteristics of the polyhedral infrared guide shell, converts the angles in tool design, realizes machining on an ordinary machining center, is not only high in efficiency, but also has an error-proof function, and the economic cost is 1 / 4 of that of a high-precision five-axis equipment, greatly reduces the machining cost, and creates profit value for the company. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the present application; Figure 2 is a bottom view of the present application; Figure 3 is a top view of the present application; Figure 4 is a right view structural schematic view of the present application; Figure 5 is an exploded view of the present application; Figure 6 is a part bottom view exploded view of the present application; Figure 7 is a part pedal structure schematic view of the present application; Figure 8 is a part tool structure schematic view of the present application.

[0014] In the drawing, 1 is a polyhedral guide shell, 2 is a tool, 3 is a pedal, 4 is a transverse plate, 5 is a suction cup, 6 is a support column, 7 is a disc, 8 is a reference hole, 9 is a through hole, 10 is an annular groove, 11 is an insertion hole, 12 is a sliding block, 13 is a connecting disc, 14 is an insertion rod, 15 is a spring, 16 is an elastic L-shaped plate, 17 is a nut, 18 is a mounting hole, 19 is a threaded rod, and 20 is a connecting groove. DETAILED DESCRIPTION

[0015] Please refer to Figures 1-8 The present application provides a technical solution: I. Background of the embodiments In the field of military equipment, the polyhedral infrared guidance shell is a key guidance component with large market demand and high manufacturing precision. The traditional processing method relies on high-precision five-axis equipment to realize multi-angle processing, which has the problems of small number of parts clamped at a time, long processing time, high cost of equipment purchase and maintenance (the cost of a single equipment is about 8-12 million yuan), etc., which seriously consumes the economic benefits of enterprises. Based on the angle characteristics of the polyhedral structure, a special tooling is designed to realize multi-angle processing of ordinary machining centers (cost about 200-300 million yuan), which reduces the cost while improving the production efficiency.

[0016] II. Specific structure implementation (1) Core component composition and parameters Polyhedral guidance shell 1: made of TC4 titanium alloy material, the shape is a regular dodecahedron structure, the edge length is 50 mm, a reference hole 8 with a diameter of 10 mm is provided at the top center as a processing reference positioning reference; four vacuum chucks 5 with a diameter of 30 mm are fixed at the bottom corners through bolts, the suction force of the vacuum chuck is ≥50N, which is used for stable positioning when there is no disc support.

[0017] Tooling 2: a total of 4 pieces, made of 45 steel quenching and tempering treatment (hardness 28-32HRC), each tooling is a cuboid structure (100mm×80mm×50mm), four installation holes 18 with a diameter of 12mm are uniformly provided on the outer edge, which are used for connecting with the machining center workbench or other auxiliary clamps; the inner side of the tooling in contact with the polyhedral guidance shell is polished to Ra 0.8μm to avoid scratching the shell surface.

[0018] Elastic L-shaped plate 16: four pieces are configured for each tooling, made of 65Mn spring steel (thickness 3mm), the lengths of the straight edges of the L-shaped right angle are 60mm and 40mm respectively, a connecting groove 20 with a length of 20mm and a width of 13mm is provided on the plate; one end of the elastic L-shaped plate is welded and fixed on the outer edge of the polyhedral guidance shell, and the other end realizes clamping of the tooling through the threaded rod 19 and the nut 17.

[0019] Angle adjusting mechanism: including disc 7, support column 6, sliding block 12, plug rod 14 and other components. The disc 7 is made of 45 steel material, with a diameter of 200mm, a ring groove 10 with a width of 15mm and a depth of 10mm is provided on the outer edge of the top, and a support column 6 with a diameter of 50mm and a height of 300mm is welded on the bottom of the disc, which is fixed on the machining center workbench through the flange plate. Four sliding blocks 12 are welded on the bottom of the polyhedral guidance shell, which are gap-fitted with the ring groove (gap 0.05-0.1mm) to ensure smooth rotation.

[0020] Positioning and locking assembly: 36 through holes 9 with a diameter of 8 mm are evenly opened in the inner cavity of the disc (the central angle of adjacent through holes is 10°), and 12 corresponding jacks 11 with a diameter of 8 mm are opened at the bottom of the polyhedron guide shell; the insertion rod 14 has a diameter of 7.8 mm and a length of 100 mm, and a 2mm×45° chamfer on the top for easy insertion; the connecting disk 13, the cross plate 4, and the pedal 3 adopt an integrated welded structure, and the spring 15 is a compression spring (diameter 12 mm, free length 50 mm, stiffness coefficient 5 N / mm) to ensure reliable reset of the insertion rod.

[0021] (2) Assembly relationship The elastic L-shaped plate 16 is inserted into the threaded rod 19 through the connecting groove 20. One end of the threaded rod is welded to the outside of the polyhedron guide shell, and the other end is tightened by the nut 17, so that the inner side of the elastic L-shaped plate is tightly fitted to the outer side of the tooling 2. The tooling and the shell are fixed by the elastic preload force. The preload torque of a single nut is controlled at 15-20N·m.

[0022] The slider 12 at the bottom of the polyhedron guide shell is embedded in the annular groove 10 of the disc 7, realizing 360° rotation of the shell around the support column 6; the insertion rod 14 passes through the disc through hole 9 and is inserted into the shell hole 11, and is kept locked by the pre-tightening force of the spring 15 to ensure that there is no angle deviation during processing.

[0023] The reference hole 8 cooperates with the locating pin of the machining center spindle (the matching clearance is 0.01-0.02mm) and is used for aligning the reference surface of the tooling. The alignment accuracy is controlled within 0.01mm / m.

[0024] 3. Implementation of Operational Procedures (1) Clamping preparation stage Fix the support column 6 on the workbench of an ordinary machining center through a flange, ensuring that the verticality of the support column is ≤0.02mm / m.

[0025] Check that there are no impurities in the annular groove 10 of the disc 7 and apply a small amount of grease (model L-TSAN46) to reduce the friction of the slider rotation.

[0026] Align the bottom slider 12 of the polyhedron guide housing with the annular groove 10 and put it in. At this time, the suction cup 5 is temporarily not working (no vacuum source is connected).

[0027] (2) Tool positioning and clamping Four pieces of tooling 2 are evenly placed on the outer edge of the polyhedron guide shell so that the inner sides of the tooling fit in with the outer surface of the shell.

[0028] Adjust the position of the elastic L-shaped plate 16 to ensure that the connecting groove 20 is completely inserted into the threaded rod 19, and use a torque wrench to tighten the nut 17 to 18N·m. At this time, the elastic L-shaped plate will produce elastic deformation, forming a stable clamping force on the tooling.

[0029] Insert the machining center spindle positioning pin into the reference hole 8, align the tool reference surface with the dial indicator, and record the reference coordinates after alignment as the subsequent machining program reference.

[0030] (Three) Multi-angle machining adjustment Initial machining angle adjustment: loosen the pedal 3, the spring 15 resets the insertion rod 14 through the disc hole 9 and inserts into the shell insertion hole 11, realizing the initial angle locking (such as 0° position).

[0031] Angle switching operation: when the machining angle needs to be switched (such as rotating 30°), press down the pedal 3, the pedal drives the horizontal plate 4 and the connecting disc 13 to move down, the spring 15 is stretched, and the insertion rod 14 is withdrawn from the insertion hole 11 and the hole 9; manually rotate the polyhedral guide shell, observe the rotation angle through the disc edge scale (every 10° mark), and release the pedal after reaching the position, the insertion rod is automatically inserted into the corresponding hole and insertion hole under the action of the spring, completing the angle locking.

[0032] No disc machining mode: if small angle features do not need to be rotated, remove the shell from the disc, connect the vacuum source to make the suction cup 5 adsorb on the machining center workbench, and directly process after alignment through the reference hole 8. The vacuum degree of the suction cup is kept above-0.08MPa.

[0033] (Four) Error-proof function implementation The fitting surface of the tool 2 and the polyhedral guide shell is designed with a "one face two pin" positioning structure: two 8mm diameter positioning pins are arranged on the inside of the tool, and two 8.1mm diameter positioning holes are opened in the corresponding position of the shell, and the positional error of the positioning pin and the positioning hole is ≤0.02mm. When the part is installed in reverse or the position is wrong, the positioning pin cannot be inserted into the positioning hole, and the elastic L-shaped plate cannot be attached to the tool, realizing physical error-proofing and avoiding part scrap caused by wrong processing.

[0034] Four, effect verification Cost reduction: after using this tool, the machining equipment is changed from high-precision five-axis equipment to ordinary machining center, and the cost of single set of equipment is reduced by about 75% (from 10 million yuan to 2.5 million yuan), which meets the production demand of 5000 shell bodies per year.

[0035] Efficiency improvement: single clamping can complete multi-angle machining of 4 tools, and the clamping time is shortened from 15 minutes / piece of traditional single clamping to 8 minutes / 4 pieces, and the machining efficiency is improved by about 6 times.

[0036] Precision guarantee: through the reference hole positioning and angle locking mechanism, the machining size precision is controlled within ±0.02mm, and the geometric tolerance is ≤0.015mm, which meets the precision requirements of military equipment.

[0037] Convenient operation: angle adjustment is realized by pedal to quickly lock and unlock, and single person can complete the operation, reducing labor cost.

[0038] V. Summary of advantages of the embodiment The embodiment realizes efficient machining of polyhedral infrared guide shell on ordinary machining center through elastic clamping structure, multi-angle adjusting mechanism and error-proof design, solves the problems of high cost and low efficiency of traditional five-axis equipment, has the characteristics of simple structure, convenient operation, low cost and reliable precision, and can be widely applied to batch production of polyhedral structure parts in military equipment field.

[0039] Working principle: the polyhedral guide shell 1 can utilize its multi-angle structure characteristics to convert its angle on the tooling 2 design, rotate the nut 17, the nut 17 rotates on the surface of the threaded rod 19, in the rotating process, extrude the elastic L-shaped plate 16, the elastic L-shaped plate 16 clamps and limits the tooling 2, uses one-face two-pin positioning method to quickly position and clamp, designs a public reference on the tooling 2, only needs to align the tooling 2 once in the early stage of machining, determines a public reference, can call the program continuously for machining, and the tooling 2 one-face two-pin has error-proof function, if the part position is error-proof, the part cannot be loaded into the tooling 2, not only the efficiency is high, but also the production cost is greatly reduced, when the polyhedral guide shell 1 needs to be rotated, first press down the pedal 3, the pedal 3 drives the horizontal plate 4 and the connecting disc 13 to move downward, the connecting disc 13 drives the spring 15 to stretch, the connecting disc 13 drives the inserting rod 14 to move downward, the inserting rod 14 moves away from the polyhedral guide shell 1 and the disc 7, and rotates the polyhedral guide shell 1, the polyhedral guide shell 1 drives the sliding block 12 to rotate, the sliding block 12 rotates inside the annular groove 10 on the disc 7, so as to rotate the polyhedral guide shell 1, when the disc 7 is not needed, the polyhedral guide shell 1 is taken out from the top of the disc 7, the suction cup 5 can be adsorbed on the platform, so as to limit the polyhedral guide shell 1.

Claims

1. A polyhedral infrared guide housing with multiple angles and a processing tool, comprising a polyhedral guide housing (1), characterized in that: Four toolings (2) are provided on the outer edge of the polyhedron guide shell (1), and four elastic L-shaped plates (16) are provided on the outer edge of each tooling (2). The elastic L-shaped plates (16) are fixedly connected to the outer edge of the polyhedron guide shell (1) on the side away from the tooling (2). The elastic L-shaped plates (16) are each provided with a connecting groove (20), and a threaded rod (19) is passed through each connecting groove (20). One end of the threaded rod (19) is fixedly connected to the outer edge of the polyhedron guide shell (1), and the outer edge of each threaded rod (19) is threadedly connected to a nut (17), and one side of each of the four adjacent elastic L-shaped plates (16) is attached to the outer edge of each adjacent tooling (2).

2. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 1 are characterized by: Four mounting holes (18) are provided on the outer edges of the tooling (2), and a reference hole (8) is provided at the top center of the polyhedron guide shell (1).

3. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 1 are characterized by: A disk (7) is provided at the bottom of the polyhedron guide shell (1), a support column (6) is fixedly connected to the center of the bottom of the disk (7), four sliders (12) are fixedly connected to the bottom of the polyhedron guide shell (1), an annular groove (10) is provided at the top of the disk (7) near the outer edge, and the four sliders (12) are movably connected together in the annular groove (10).

4. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 3 are characterized by: The inner cavity of the disc (7) is provided with a plurality of through holes (9), and the bottom of the polyhedron guide shell (1) is provided with a plurality of insertion holes (11), and the through holes (9) and the insertion holes (11) are mutually interpenetrating.

5. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 4 are characterized in that: A connecting plate (13) is provided on the front side of the support column (6), and an inserting rod (14) is fixedly connected to the top of the connecting plate (13). The inserting rod (14) passes through the adjacent through hole (9) and is inserted into the adjacent insertion hole (11).

6. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 5, characterized in that: The bottom of the connecting disk (13) is fixedly connected to a transverse plate (4), the front side of the transverse plate (4) is fixedly connected to a pedal (3), the outer edge of the insertion rod (14) is sleeved with a spring (15), the top end of the spring (15) is fixedly connected to the bottom of the disc (7), and the bottom end of the spring (15) is fixedly connected to the top of the connecting disk (13).

7. The multi-angle polyhedral infrared guide housing and processing tooling according to claim 1, characterized in that: Suction cups (5) are fixedly connected to the bottom of the polyhedron guide shell (1) near the four corners.

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