Process method for processing wedge-shaped locking block and clamp thereof

Abstract

The application discloses a kind of process method and fixture of processing wedge type locking block, method includes S1 preparation plate material;S2 blanking to plate material;S3 heat treatment plate material as blank;S4 numerical milling processing 1: numerical milling blank, drilling forms light hole and thread bottom hole, thread bottom hole tapping processing;S5 numerical milling processing 2: cutting blank;S6 surface passivation treatment;S7 to final inspection;For the fixture for processing wedge type locking block includes clamping seat, pressing plate, first locking screw and second locking screw, clamping seat is provided with clamping through slot, first threaded hole and mounting hole, pressing plate is provided with second threaded hole;By improving process method, multiple process contents are combined, clamping frequency is reduced, semi-finishing requirement in process is increased, no burr can be generated in process, because clamping frequency is reduced, part surface quality is improved;Raw material utilization is higher, is half of all materials of original process scheme, total amount of waste gas emission is reduced by half compared with original process scheme.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a process method and fixture for processing wedge-shaped locking blocks. Background Technology

[0002] The computer equipment used in modern aircraft and aerospace vehicles and engines has many requirements, demanding high reliability. The reliability of the circuit boards—the processing units—within the structural system must be absolutely reliable, as must the components. Conventional manufacturing methods, due to the excessive number of steps, increase the difficulty of process control, and the quality of the product is reduced due to the tooling system and clamping during machining, leading to a decrease in overall process precision.

[0003] If the tapping process requires ensuring the product's form and position tolerances, the clamping force required for the product is relatively high. When the clamping force is too large, the product is prone to deformation or damage. To remove surface damage, a fitter polishing process is required, which increases the product's manufacturing cost. When the clamping force is too small, the product's positioning reference will be unreliable, causing the parallelism of the thread relative to the reference surface to decrease and exceed the tolerance, resulting in the entire locking system failing to meet the design requirements.

[0004] The tapping process requires highly skilled workers; this process reduces reliance on highly skilled technicians, reduces the difficulty of subsequent fitter processing, and results in higher product consistency.

[0005] There are many existing methods for manufacturing locking blocks, but they all have some problems. For example, in the process of machining wedge-shaped locking blocks, the conventional machining methods cannot guarantee the dimensional and positional tolerance requirements of the design drawings, and there are serious problems such as clamping and scratching on the surface of the parts. Summary of the Invention

[0006] The purpose of this invention is to design a process method and fixture for processing wedge-shaped locking blocks in order to solve the above-mentioned problems.

[0007] The present invention achieves the above objectives through the following technical solutions:

[0008] A process for machining a wedge-shaped locking block includes:

[0009] S1. Prepare the sheet material;

[0010] S2. Cut the prepared sheet metal into pieces;

[0011] S3. The cut sheet metal is heat-treated to become blank material;

[0012] S4, CNC Milling 1: The blank is clamped on the rotary feed axis of the 3+1 axis CNC milling machine by a fixture. The rotary feed axis of the 3+1 axis CNC milling machine rotates the blank 360°. The three linear feed axes of the 3+1 axis CNC milling machine perform CNC milling on the blank. The drilling machine drills holes in the blank to form smooth holes and threaded bottom holes. The tapping machine taps the threaded bottom holes.

[0013] S5, CNC milling 2: Adjust the clamping force of the sheet metal on the fixture, and cut the blank through the angle milling head. The cut blank is the wedge-shaped locking block.

[0014] S6. Perform surface passivation treatment on the processed wedge-shaped locking block;

[0015] S7. Perform a final inspection on the wedge-shaped locking block after surface passivation.

[0016] A fixture for machining wedge-shaped locking blocks, used for clamping blanks in the above-mentioned process of machining wedge-shaped locking blocks, includes a clamping base, a pressure plate, a first locking screw, and a second locking screw. The clamping base is provided with a clamping through groove, a first threaded hole, and a mounting hole. The blank and the pressure plate are both placed in the clamping through groove. The pressure plate is provided with a second threaded hole. The first locking screw is threadedly connected to the first threaded hole, and the second locking screw passes through the mounting hole and is threadedly connected to the second threaded hole.

[0017] The beneficial effects of this invention are as follows: by improving the process method, merging multiple processes, reducing the number of clamping operations, and increasing the semi-finishing requirements in the process, it can solve the problem of no burr generation in the process. Due to the reduction in the number of clamping operations, the surface quality of the parts is improved. The utilization rate of raw materials is higher, which is half of all materials in the original process plan, and the total amount of waste gas emissions is reduced by half compared to the original process plan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the finished wedge-shaped locking block in the process method of processing a wedge-shaped locking block according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the finished wedge-shaped locking block in the process method of processing a wedge-shaped locking block according to the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the fixture used in this invention for processing wedge-shaped locking blocks;

[0021] Figure 4 This is a schematic diagram of the internal structure of the fixture used in this invention for processing wedge-shaped locking blocks;

[0022] Figure 5 This is a schematic diagram illustrating the processing method of a wedge-shaped locking block according to the present invention;

[0023] The corresponding figure labels are:

[0024] 1-0° plane, 2-45° plane, 3-clear hole, 4-270° plane, 5-90° plane, 6-180° plane, 7-first side surface, 8-chamfer, 9-threaded bottom hole, 10-clamping seat, 11-second locking screw, 12-second threaded hole thread, 13-first locking screw, 14-first threaded hole, 15-pressure plate, 16-blade, 17-clamping through slot, 18-mounting hole, 19-angle milling head, 20-rotary feed axis, 21-saw blade milling cutter. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a process for machining a wedge-shaped locking block includes:

[0033] S1. Prepare the sheet material;

[0034] S2. Cut the prepared sheet metal into pieces;

[0035] S3. The blanked plate is heat-treated to become billet 16. The heat treatment is solution treatment or quenching.

[0036] S4. CNC Milling 1: The blank 16 is clamped on the rotary feed axis 20 of the 3+1 axis CNC milling machine using a fixture. The rotary feed axis 20 of the 3+1 axis CNC milling machine rotates the blank 16 360°. The three linear feed axes of the 3+1 axis CNC milling machine perform CNC milling on the blank 16. A drilling machine drills holes in the blank 16 to form a smooth hole 3 and a threaded hole 9. A tapping machine taps the threaded hole 9. Specifically:

[0037] S41. The blank 16 is clamped on the rotary feed axis 20 of the 3+1 axis CNC milling machine by a fixture;

[0038] S42, the rotary feed axis 20 controls the blank 16 to be at the 0° position, the three linear feed axes complete the cutting of the first side 7 and the 0° plane 1 of the blank 16, and the drilling machine drills the blank 16 to form a smooth hole 3 and a threaded bottom hole 9.

[0039] S43, the rotary feed axis 20 controls the blank 16 to be in the 45° position, and the three linear feed axes complete the numerical milling of the 45° plane 2 of the blank 16;

[0040] S44, the rotary feed axis 20 controls the blank 16 to be in the 90° position, and the three linear feed axes complete the numerical milling of the 90° plane 5 of the blank 16;

[0041] S45, the rotary feed axis 20 controls the blank 16 to be in the 180° position, the three linear feed axes complete the CNC milling of the 180° plane 6 and chamfer 8 on the blank 16, and the tapping machine performs thread tapping on the threaded bottom hole 9;

[0042] S46, the rotary feed axis 20 controls the blank 16 to be in the 270° position, and the three linear feed axes complete the CNC milling of the 270° plane 4 on the blank 16.

[0043] S5, CNC milling 2: Adjust the clamping force of the sheet metal on the fixture and clamp it. Use the angle milling head 19 to cut the blank 16. The cut blank 16 is the wedge-shaped locking block.

[0044] S6. Perform surface passivation treatment on the processed wedge-shaped locking block;

[0045] S7. Perform a final inspection on the wedge-shaped locking block after surface passivation.

[0046] The fixture includes a clamping base 10, a pressure plate 15, a first locking screw 13, and a second locking screw 11. The clamping base 10 is provided with a clamping through groove 17, a first threaded hole 14, and a mounting hole 18. The blank 16 and the pressure plate 15 are both placed in the clamping through groove 17. The pressure plate 15 is provided with a second threaded hole. The first locking screw 13 is threadedly connected to the first threaded hole 14, and the second locking screw 11 passes through the mounting hole 18 and is threadedly connected to the second threaded hole 12. The clamping through groove 17... The included angles between the first threaded hole 14 and the mounting hole 18 are both 90°. When clamping the blank 16, the blank 16 is passed through the clamping through groove 17. The first locking screw 13 and the second locking screw 11 are rotated so that the first locking screw 13 is pressed into contact with the first side 7 of the pressure plate 15, the second side of the pressure plate 15 is pressed into contact with the blank 16, and the second locking screw 11 is pressed into contact with the blank 16. The fixture is clamped on the rotary feed axis 20 of the 3+1 axis CNC milling machine.

[0047] By improving the process methods, merging multiple processes, reducing the number of clamping operations, and increasing the semi-finishing requirements during the process, it is possible to solve the problem of no burr generation within the process. Due to the reduction in the number of clamping operations, the surface quality of the parts is improved. The utilization rate of raw materials is higher, using half the amount of materials in the original process plan, and the total amount of waste gas emissions is reduced by half compared to the original process plan.

[0048] The technical solutions of the present invention are not limited to the specific embodiments described above. Any technical modifications made in accordance with the technical solutions of the present invention fall within the protection scope of the present invention.

Claims

1. A process for processing wedge-shaped locking blocks, characterized in that, include: S1. Prepare the sheet material; S2. Cut the prepared sheet metal into pieces; S3. The cut sheet metal is heat-treated to become blank material; S4. CNC Milling 1: The blank is clamped on the rotary feed axis of a 3+1 axis CNC milling machine by a fixture. The rotary feed axis of the 3+1 axis CNC milling machine rotates the blank 360°. The three linear feed axes of the 3+1 axis CNC milling machine perform CNC milling on the blank. A drilling machine drills holes in the blank to form smooth holes and threaded bottom holes. A tapping machine taps the threaded bottom holes. The fixture includes a clamping seat, a pressure plate, a first locking screw and a second locking screw. The clamping seat is provided with a clamping through groove, a first threaded hole and a mounting hole. The blank and the pressure plate are placed in the clamping through groove. The pressure plate is provided with a second threaded hole. The first locking screw is threaded to the first threaded hole. The second locking screw passes through the mounting hole and is threaded to the second threaded hole. S41. The blank is clamped on the rotary feed axis of the 3+1 axis CNC milling machine by a fixture; S42, the rotary feed axis controls the billet to be at the 0° position, and the three linear feed axes complete the cutting of the first side and the 0° plane of the billet. The drilling machine drills the billet to form a smooth hole and a threaded bottom hole. S43, the rotary feed axis controls the blank to be at a 45° position, and the three linear feed axes complete the CNC milling of the blank in a 45° plane; S44: The rotary feed axis controls the blank to be at a 90° position, and the three linear feed axes complete the 90° plane CNC milling of the blank; S45, the rotary feed axis controls the blank to be in the 180° position, the three linear feed axes complete the 180° plane and chamfering of the blank, and the tapping machine performs thread tapping on the threaded bottom hole; S46. The rotary feed axis controls the blank to be at the 270° position, and the three linear feed axes complete the 270° plane CNC milling of the blank; S5, CNC milling 2: Adjust the clamping force of the sheet metal on the fixture, and cut the blank through the angle milling head. The cut blank is the wedge-shaped locking block. S6. Perform surface passivation treatment on the processed wedge-shaped locking block; S7. Perform a final inspection on the wedge-shaped locking block after surface passivation.

2. The process method for processing a wedge-shaped locking block according to claim 1, characterized in that, The heat treatment is solution treatment or quenching.

3. A fixture for machining wedge-shaped locking blocks, used for clamping the blank in a machining process for wedge-shaped locking blocks as described in any one of claims 1-2, characterized in that, It includes a clamping base, a pressure plate, a first locking screw and a second locking screw. The clamping base is provided with a clamping through groove, a first threaded hole and a mounting hole. The billet and the pressure plate are both placed in the clamping through groove. The pressure plate is provided with a second threaded hole. The first locking screw is threaded to the first threaded hole, and the second locking screw passes through the mounting hole and is threaded to the second threaded hole.

4. The fixture for machining wedge-shaped locking blocks according to claim 3, characterized in that, The included angle between the clamping through groove and the first threaded hole and the mounting hole is 90°.

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