Method for processing parallel precision of small reference panel frame type parts

Abstract

The application relates to the field of mechanical processing, and particularly discloses a machining method for parallel precision of small reference panel frame type parts; the machining method comprises a mould and a clamping table, and further comprises the following steps: S1, rough machining is performed on an aluminum blank in a 6061-T6 state, process clamping steps are reserved on the inner sides of two hole positions during rough machining of the part, artificial aging is performed at 160-180 DEG C after the rough machining is completed, and the aluminum blank is air-cooled after 12-24 hours of heat preservation to remove internal stress; and S2, after the artificial aging, semi-finishing machining is performed on the part, two step reference surfaces of the bottom surface are left with a 0.1mm allowance. When the parallel precision surface is machined, the process clamping steps reserved, i.e. the increased area of the bottom surface reference surface, provide a clamping position, the clamping is simplified, the machining precision is improved, the sequence of removing the process clamping steps from far to near and the machining parameters are used, the deformation amount is minimized, and the purposes of improving the machining precision, the production efficiency and the product qualification rate are achieved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a method for achieving parallelism accuracy in machining small reference panel frame parts. Background Technology

[0002] Small reference panel frames typically refer to structural frames used in fields such as construction, machinery, and electronics to support, fix, or install small panels, displays, dashboards, and other equipment. These products may have diverse designs and specifications depending on the application.

[0003] Small reference panel frames are primarily used to provide a stable support platform, ensuring that panels or equipment installed on them can operate steadily and accurately. Through specific design and structure, they achieve the fixing, adjustment, and positioning of panels to meet the needs of different application scenarios. Small reference panel frames are typically composed of components such as bases, support columns, crossbeams, and clamps. These components are combined together by welding, bolting, or other methods to form a stable overall structure. The choice of materials depends on the specific application scenario and performance requirements. Common materials include aluminum alloys, stainless steel, and cold-rolled steel plates. These materials have good strength, corrosion resistance, and processing performance, and can meet the usage requirements under different environmental conditions.

[0004] With the continuous development of industrial technology, machined products are increasingly used in industrial equipment, aerospace, and transportation equipment (such as airplanes, trains, automobiles, and life science instruments). However, in the machining process, there is a type of plate frame part with a very small bottom contact surface and the need to machine the entire top surface. The parallelism and planarity accuracy are very high, making it difficult to clamp and prone to deformation, thus failing to meet the design requirements.

[0005] Therefore, those skilled in the art are dedicated to developing a method for machining parallel precision of small reference panel frame parts. During machining, roughing and finishing are separated, a process table is reserved, aging treatment is performed, and reasonable cutting tools and machining parameters are used. Through tooling, the parallel surfaces are finished, and the process table is removed in a reasonable sequence, thereby simplifying clamping, improving machining accuracy, preventing deformation, meeting product design requirements, and solving the problem that the shape characteristics of parts are not easy to clamp and are easily deformed, affecting machining accuracy. This provides a new machining approach for the machining industry. Summary of the Invention

[0006] The purpose of this invention is to provide a machining method for achieving parallelism accuracy in small reference panel frame parts, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a machining method for improving the parallelism accuracy of small reference panel frame parts, including a fixture and a clamping table, and specifically including the following steps:

[0008] S1. Roughly machine the aluminum blank in 6061-T6 condition. During the rough machining of the part, leave process clamping steps on the inner side of the square holes on both sides. After the rough machining is completed, perform artificial aging at 160-180℃ and keep it at that temperature for 12-24 hours before air cooling to remove internal stress.

[0009] S2. After artificial aging, the part is semi-finished. The two step reference surfaces on the bottom surface are left with a margin of 0.1mm, and the top surface and the step surface are left with a margin of 0.1mm. M2 countersunk holes are machined at the step of the process clamping. Then, high and low temperature aging is performed to further stabilize the dimensions of the finished part.

[0010] S3. After high and low temperature aging, precision mill the two step reference surfaces on the bottom surface, leaving a margin of 0.03mm;

[0011] S4. Grind to ensure a flatness of 0.006mm;

[0012] S5, a five-axis machine tool, is used to make tooling. Five processes are used to clamp the countersunk holes on the step, and M2 screws are tightened. The square holes on the top, step surface and flat side are precision milled to ensure that they are parallel to the bottom surface by 0.015mm.

[0013] S6. Above the bottom step, install M3 screws in four 3.4 diameter holes. Following the order of distance from the M3 screws from farthest to closest, use small tools and small cutting tools to remove the process clamping step in sequence to ensure the part's accuracy requirements.

[0014] Preferably, in S2, during the semi-finishing process, the reserved process clamping step is at the same height as the step surface and the bottom reference surface, further increasing the reference surface and preventing too many parts from being suspended. The part in contact with the side of the process clamping step is provided with a 4mm wide and 0.5mm deep stress relief groove to reduce the contact area between the process clamping step and the part and reduce the amount of deformation after removal.

[0015] By setting up the above technical solution, the reserved process clamping steps provide a stable clamping datum for the workpiece, which helps to reduce errors caused by improper clamping, thereby improving machining accuracy and ensuring that the parallelism requirements between the machined surfaces are met, which is especially important in the machining of high-precision parallel surfaces.

[0016] After reserving process steps, multiple surfaces can be machined in one clamping, reducing the time consumed by positioning and alignment due to multiple clamping, thereby shortening the entire machining cycle. Reducing the number of clamping and positioning time allows the machine tool to be in an effective machining state for a longer time, improving machining efficiency.

[0017] By reserving process clamping steps, the cost and time required to manufacture special fixtures are often high for the processing of small batches and multiple varieties of parts. By reserving process clamping steps, general-purpose fixtures can be used to complete the processing, reducing the manufacturing cost of special fixtures. It can also reduce waste caused by excessive material removal during processing and improve material utilization.

[0018] In summary, when machining parallel precision surfaces, the reserved process clamping steps can improve machining accuracy, shorten machining cycle, reduce machining costs, enhance machining flexibility, and improve machining safety, which is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness.

[0019] Preferably, in step S6, during the removal of the process clamping, the screws on the process clamping step are not loosened, and M3 screws are used to fasten the four 3.4mm diameter holes on the right side. The process clamping step on the left side is 60mm away from the M3 screw clamping position, which is a relatively far distance. In order to improve the clamping strength, small tools and small cutting tools are used to remove the process clamping step from left to right in sequence to ensure the accuracy requirements of the parts.

[0020] By setting up the above technical solution, processing in the order from far to near can reduce the impact of vibration and deformation caused by processing the far end of the workpiece on the near end processing surface. This is because when the far end is processed first, the rigidity of the workpiece will be improved to a certain extent, thereby reducing vibration and deformation in subsequent processing.

[0021] Removing the process clamping steps in order from far to near allows for better control of the parallelism and perpendicularity of the machined surfaces, as the machining of the far end will not directly interfere with the near end. By rationally planning and selecting machining parameters, the machining of multiple steps can be completed in one clamping, thereby reducing the number of tool changes and clamping time, and improving machining efficiency.

[0022] The order from far to near usually means that the tool's movement path is more reasonable, which can reduce idle travel and further improve machining efficiency. This means that the machining of the far part usually does not generate too much cutting force on the tool. Therefore, the tool can be used to perform the machining of this part first to extend the tool life. As the machining progresses, when the tool gradually approaches the center of the workpiece, the cutting force may increase, but at this time the tool wear is relatively small.

[0023] In summary, by removing the process clamping steps from far to near and by selecting appropriate machining parameters, we can achieve many advantages, such as improved machining accuracy, increased machining efficiency, extended tool life, enhanced machining stability, and flexible response to different machining needs. This is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This invention provides a machining method for improving the parallelism accuracy of small reference panel frame parts. When machining the parallelism accuracy surface, a pre-reserved process clamping step is used, which increases the area of ​​the bottom reference surface and provides a clamping position, simplifying the clamping and improving the machining accuracy.

[0026] The process disclosed in this invention, when machining small reference panel frame parts to ensure parallelism, adopts the following steps: rough machining → aging → semi-finishing → high and low temperature aging → finish machining (tooling) → removal of process clamping steps. By removing process clamping steps from far to near and by adjusting the machining parameters, the deformation is minimized, thereby improving machining accuracy, production efficiency and product qualification rate.

[0027] In summary, when machining parallel precision surfaces, the reserved process clamping steps can improve machining accuracy, shorten machining cycle, reduce machining cost, enhance machining flexibility, and improve machining safety, which is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness.

[0028] Furthermore, by removing the process clamping steps from far to near and by selecting reasonable machining parameters, it is possible to achieve many advantages, such as improved machining accuracy, improved machining efficiency, extended tool life, enhanced machining stability, and flexible response to different machining needs. This is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness. Attached Figure Description

[0029] Figure 1 This is a flowchart of the steps of the present invention;

[0030] Figure 2 This is a schematic diagram of the assembly of the clamping platform and the fixture of the present invention;

[0031] Figure 3 This is a schematic diagram of the top structure of the tire of the present invention. Detailed Implementation

[0032] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] The machining method for achieving parallelism accuracy of small reference panel frame parts includes a fixture 1 and a clamping table 2, and specifically includes the following steps:

[0035] S1. Roughly machine the aluminum blank in 6061-T6 condition. During the rough machining of the part, leave process clamping steps on the inner side of the square holes on both sides. After the rough machining is completed, perform artificial aging at 160-180℃ and keep it at that temperature for 12-24 hours before air cooling to remove internal stress.

[0036] S2. After artificial aging, the part is semi-finished. The two step reference surfaces on the bottom surface are left with a margin of 0.1mm, and the top surface and the step surface are left with a margin of 0.1mm. M2 countersunk holes are machined at the step of the process clamping. Then, high and low temperature aging is performed to further stabilize the dimensions of the finished part.

[0037] S3. After high and low temperature aging, precision mill the two step reference surfaces on the bottom surface, leaving a margin of 0.03mm;

[0038] S4. Grind to ensure a flatness of 0.006mm;

[0039] S5, a five-axis machine tool, is used to make tooling. Five processes are used to clamp the countersunk holes on the step, and M2 screws are tightened. The square holes on the top, step surface and flat side are precision milled to ensure that they are parallel to the bottom surface by 0.015mm.

[0040] S6. Above the bottom step, install M3 screws in four 3.4 diameter holes. Following the order of distance from the M3 screws from farthest to closest, use small tools and small cutting tools to remove the process clamping step in sequence to ensure the part's accuracy requirements.

[0041] Example 2

[0042] The present invention is further described in detail. In S2, during the semi-finishing process, the reserved process clamping step is at the same height as the step surface and the bottom reference surface, which further increases the reference surface and prevents too many parts from being suspended. The part in contact with the side of the process clamping step is made with a 4mm wide and 0.5mm deep stress relief groove to reduce the contact area between the process clamping step and the part and reduce the amount of deformation after removal.

[0043] As can be seen from the above, the reserved process clamping steps provide a stable clamping datum for the workpiece, which helps to reduce errors caused by improper clamping, thereby improving machining accuracy and ensuring that the parallelism requirements between the machined surfaces are met, which is especially important in machining that requires high-precision parallel surfaces.

[0044] After reserving process steps, multiple surfaces can be machined in one clamping, reducing the time consumed by positioning and alignment due to multiple clamping, thereby shortening the entire machining cycle. Reducing the number of clamping and positioning time allows the machine tool to be in an effective machining state for a longer time, improving machining efficiency.

[0045] By reserving process clamping steps, the cost and time required to manufacture special fixtures are often high for the processing of small batches and multiple varieties of parts. By reserving process clamping steps, general-purpose fixtures can be used to complete the processing, reducing the manufacturing cost of special fixtures. It can also reduce waste caused by excessive material removal during processing and improve material utilization.

[0046] In summary, when machining parallel precision surfaces, the reserved process clamping steps can improve machining accuracy, shorten machining cycle, reduce machining costs, enhance machining flexibility, and improve machining safety, which is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness.

[0047] Example 3

[0048] The present invention is further described in detail. In S6, during the removal of the process clamping, the screws on the process clamping step are not loosened. M3 screws are used to fasten the four 3.4 diameter holes on the right side. The process clamping step on the left side is 60mm away from the M3 screw clamping position, which is a long distance. In order to improve the clamping strength, small tools and small cutting tools are used to remove the process clamping step from left to right to ensure the accuracy requirements of the parts.

[0049] As can be seen from the above, processing in the order from far to near can reduce the impact of vibration and deformation caused by processing the far end of the workpiece on the near end of the machined surface. This is because when the far end is processed first, the rigidity of the workpiece will be improved to a certain extent, thereby reducing vibration and deformation in subsequent processing.

[0050] Removing the process clamping steps in order from far to near allows for better control of the parallelism and perpendicularity of the machined surfaces, as the machining of the far end will not directly interfere with the near end. By rationally planning and selecting machining parameters, the machining of multiple steps can be completed in one clamping, thereby reducing the number of tool changes and clamping time, and improving machining efficiency.

[0051] The order from far to near usually means that the tool's movement path is more reasonable, which can reduce idle travel and further improve machining efficiency. This means that the machining of the far part usually does not generate too much cutting force on the tool. Therefore, the tool can be used to perform the machining of this part first to extend the tool life. As the machining progresses, when the tool gradually approaches the center of the workpiece, the cutting force may increase, but at this time the tool wear is relatively small.

[0052] In summary, by removing the process clamping steps from far to near and by selecting appropriate machining parameters, we can achieve many advantages, such as improved machining accuracy, increased machining efficiency, extended tool life, enhanced machining stability, and flexible response to different machining needs. This is of great significance for improving product quality, reducing production costs, and enhancing enterprise competitiveness.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining method for achieving parallelism accuracy in small reference panel frame parts, characterized in that, It includes a jig (1) and a clamping table (2), and specifically includes the following steps: S1. Roughly machine the aluminum blank in 6061-T6 condition, and reserve process clamping steps inside the two square holes during the rough machining of the part. S2. After artificial aging, the parts undergo semi-finishing, followed by high and low temperature aging to further stabilize the dimensions of the finished parts. S3. After high and low temperature aging, precision mill the two step reference surfaces on the bottom surface; S4. Grind the parts; S5, a five-axis machine tool, is used to make tooling. Five processes are used to clamp the countersunk holes on the step, M2 screws are tightened, and the square holes on the top, step surface and flat side are precision milled. S6. Above the bottom step, there are four 3.4mm diameter holes. Install M3 screws. Following the order of distance from the M3 screws from farthest to closest, use small tools and small cutting tools to remove the process clamping step in turn to ensure the accuracy requirements of the part.

2. The machining method for improving the parallelism accuracy of small reference panel frame parts according to claim 1, characterized in that: After the rough machining is completed, artificial aging is performed at 160-180℃, and the temperature is maintained for 12-24 hours before air cooling to remove internal stress.

3. The machining method for improving the parallelism accuracy of small reference panel frame parts according to claim 1, characterized in that: During the semi-finishing of the part, the allowance for the two step reference surfaces on the bottom surface of the part is 0.1mm, and the allowance for the top surface and the step surface of the part is 0.1mm.

4. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: After the high and low temperature aging of the part, the allowance for the two step reference surfaces on the precision milled bottom surface of the part is 0.03mm.

5. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: The flatness of the part after grinding is 0.006 mm.

6. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: The part is precision milled with square holes on the top, stepped surface, and flat side, so that the square holes are parallel to the bottom surface by 0.015mm.

7. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: The process clamping step has a stress relief groove in contact with the side of the part. The stress relief groove is 4mm wide and 0.5mm deep.

8. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: The step pitch of the M3 screw clamping position of the process clamping step described on the left is 60mm.

9. The machining method for achieving parallelism accuracy in small reference panel frame parts according to claim 1, characterized in that: The part has countersunk holes machined at the process clamping step.

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