Rounding process for square parts

Abstract

This invention discloses a rounded corner processing technology for square parts. The square part is positioned and rotated using a V-shaped bidirectional punch forming machine, and then rounded corners are ground on the positioned and rotated square part using an optical curve projection grinder. The optical curve projection grinder uses an optical projection magnification device to project the square part onto a projection screen, which is then compared with a magnified film of the square part clamped on the projection screen. During processing, the grinding wheel of the processing device grinds the outline of the square part until the projection of the square part completely coincides with the contour lines on the magnified film, thus completing the rounded corner grinding process. This method offers advantages such as high processing accuracy and good surface finish. Simultaneously, the V-shaped bidirectional punch forming machine has the advantage of precise positioning. The two technologies work together to greatly improve processing accuracy. Therefore, the rounded corner processing technology for square parts of this invention improves processing accuracy, meets the product's processing accuracy requirements, and ensures product quality.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a process for rounding the corners of a square part. Background Technology

[0002] Currently, the industry commonly uses NC (numerical control) and EDM to process the right angles of square parts into rounded corners. Although these two processing methods can complete the process, their processing accuracy is low. For products with high processing accuracy requirements, these two processing methods simply cannot meet the processing accuracy requirements, and thus cannot guarantee product quality. Summary of the Invention

[0003] In view of the above-mentioned defects in the existing technology, the present invention provides a rounded corner processing technology for square parts. This rounded corner processing technology for square parts improves the processing accuracy, meets the processing accuracy requirements of the product, and ensures the product quality.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A process for rounding the corners of a square part, using a V-shaped bidirectional punch and an optical curve projection grinder, includes the following steps:

[0006] S10. Clamp the square piece onto the V-shaped bidirectional punch forming machine and align it so that the center of the rounded corner of the square piece to be processed is coaxial with the rotation axis of the V-shaped bidirectional punch forming machine.

[0007] S20. Set the rotation angle of the V-shaped bidirectional punch forming machine between -45° and 45° so that the rotation angle of the square part toward the two sides of the corner to be processed is 45° respectively.

[0008] S30. The V-shaped bidirectional punch forming machine and the square part, which are aligned and have their rotation angles adjusted, are placed on the magnetic table of the optical curve projection grinding machine for positioning.

[0009] S40. The square part is projected onto the projection screen of the optical curve projection grinding machine by the projection magnification device of the optical curve projection grinding machine, and the projection of the square part is aligned with the finished outline of the square part in the magnified film on the projection screen by adjusting the magnetic table. When aligned, the two sides of the two sides corresponding to the corner to be processed on the projection coincide with the two sides of the rounded corner in the magnified film, and the two sides of the two sides corresponding to the corner to be processed on the projection are tangent to the rounded corner.

[0010] S50. The square part is driven to rotate back and forth between -45° and 45° by the V-shaped bidirectional punch forming machine. At the same time, the processing device of the optical curve projection grinding machine performs rounded corner forming grinding on the corner to be processed of the square part according to the processing trajectory line corresponding to the rounded corner on the magnification film that is preset inside it.

[0011] In step S10, the position of the square part on the V-shaped bidirectional punch forming machine is adjusted by the V-shaped bidirectional punch forming machine, and the square part is aligned with the help of a height gauge.

[0012] The alignment of the square component using the altimeter includes the following steps:

[0013] S101, Press one of the sides of the angle to be processed against the probe of the altimeter to zero the altimeter, while keeping the altimeter stationary;

[0014] S102, Press the tip of the corner to be processed against the probe of the height gauge, and adjust the position of the square piece;

[0015] S103, Press the other side of the corner to be processed against the probe of the height gauge, and adjust the position of the square piece;

[0016] S104. Repeat steps S102 and S103 until both sides of the corner to be processed press against the probe of the altimeter, and the altimeter displays a value of 0. When the tip of the corner to be processed presses against the probe of the altimeter, the altimeter displays a value of a. At this point, the alignment of the square part is completed. The distance from the tip of the corner to be processed to the center of its rounded corner is b, the radius of the rounded corner is r, and a = br.

[0017] Prior to step S10, there is another step:

[0018] S0. Using computer drawing software, draw the machining drawings of the square part, measure b and r according to the machining drawings, and calculate a according to the formula a=br.

[0019] In step S10, the V-shaped bidirectional punch forming device has a V-shaped block and a C-shaped clamp that cooperate with each other. The V-shaped block has a V-shaped groove. First, the V-shaped groove is cleaned, and then the square part is fixed in the V-shaped groove by the bolts on the C-shaped clamp, so that the two sides of the square part at the corner to be processed respectively make precise contact with the corresponding groove surface of the V-shaped groove, thereby realizing the clamping of the square part.

[0020] In step S1O, before clamping the square part, the square part is first inspected for size, and it can only be clamped after it passes the inspection.

[0021] In step S30, the magnetic platform is first cleaned, then the V-shaped bidirectional punch forming device is placed on the magnetic platform, the position of the V-shaped bidirectional punch forming device is then corrected, and the magnetic platform control switch is turned on to fix the V-shaped bidirectional punch forming device.

[0022] In step S40, the magnified film is made according to the processing drawings.

[0023] The computer graphics software includes two-dimensional graphics software and three-dimensional graphics software.

[0024] The two-dimensional drawing software includes CAD drawing software and CAXA electronic drawing board, and the three-dimensional drawing software includes SolidWorks, Unigraphics NX and Pro / Engineer.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are:

[0026] The rounded corner processing technology for square parts provided by this invention employs a V-shaped bidirectional punch forming device to position and rotate the square part, and then uses an optical curve projection grinder to perform rounded corner grinding on the positioned and rotated square part. The optical curve projection grinder uses an optical projection magnification device to project the square part onto a projection screen, which is then compared with a magnified film of the square part clamped on the projection screen. During processing, the grinding wheel of the processing device grinds the outline of the square part, removing any portion of the square part that extends beyond the inner contour line of the magnified film, until the projection of the square part completely coincides with the contour line on the magnified film. This process is considered complete when the rounded corner grinding is finished. It offers advantages such as high processing accuracy and good surface finish. Simultaneously, the V-shaped bidirectional punch forming device provides precise positioning. The two technologies work together to significantly improve processing accuracy. Therefore, compared with existing technologies, the rounded corner processing technology for square parts of this invention improves processing accuracy, meets the product's processing accuracy requirements, and ensures product quality. Attached Figure Description

[0027] Figure 1 This is a process flow diagram of the rounded corner processing technology for the square part of the present invention;

[0028] Figure 2 This is a schematic diagram of the clamping of the square part in the rounded corner processing process of the square part of the present invention;

[0029] Figure 3 This is a schematic diagram showing the alignment of the projection of the square part with a magnified film during the rounded corner processing of the square part in this invention.

[0030] In the diagram: 1. Square part; 11. Corner to be machined; 12. Side; 13. Point; 14. Rounded corner; 2. V-block; 3. C-clamp; 4. Bolt. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0032] like Figures 1 to 3 As shown, a process for rounding the corners of a square part, using a V-shaped bidirectional punch former and an optical curve projection grinder, includes the following steps:

[0033] S10. Clamp the square part 1 onto the V-shaped bidirectional punch forming machine and align it so that the center O of the radius 14 of the corner 11 to be processed of the square part 1 is coaxial with the rotation axis of the V-shaped bidirectional punch forming machine.

[0034] S20. Set the rotation angle of the V-shaped bidirectional punch forming machine between -45° and 45° so that the rotation angle of the two sides 12 of the square part 1 toward the corner to be processed 11 is 45° respectively.

[0035] S30. Place the V-shaped bidirectional punch forming machine and the square part 1, which are aligned and have their rotation angle adjusted, onto the magnetic table of the optical curve projection grinder for positioning.

[0036] S40. The square part 1 is projected onto the projection screen of the optical curve projection grinding machine by the projection magnification device of the optical curve projection grinding machine, and the projection of the square part 1 is aligned with the finished outline of the square part 1 in the magnified film on the projection screen by adjusting the magnetic table. When aligned, the two sides of the two sides 12 corresponding to the corner to be processed 11 on the projection coincide with the two sides of the rounded corner 14 in the magnified film, and the two sides of the two sides 12 corresponding to the corner to be processed 11 on the projection are tangent to the rounded corner 14.

[0037] S50. The square part 1 is driven to rotate back and forth between -45° and 45° by the V-shaped bidirectional punch forming machine. At the same time, the grinding wheel of the optical curve projection grinding machine performs rounded corner forming grinding on the corner 11 of the square part 1 according to the processing trajectory line corresponding to the rounded corner 14 on the magnification film.

[0038] The rounded corner processing technology for this square part utilizes a V-shaped bidirectional punch forming machine to position and rotate the square part 1. An optical curve projection grinder is then used to perform rounded corner grinding on the positioned and rotated square part 1. The optical curve projection grinder uses an optical projection magnification device to project the square part 1 onto a projection screen, which is then compared to a magnified film of the square part 1 clamped on the screen. During processing, the grinding wheel of the processing device grinds the outline of the square part 1, removing any portion that extends beyond the inner contour line of the magnified film. This process continues until the projection of the square part 1 completely overlaps with the contour line on the magnified film, thus completing the rounded corner grinding process. This method offers advantages such as high processing accuracy and good surface finish. Simultaneously, the V-shaped bidirectional punch forming machine provides precise positioning. The combined effect of these two technologies significantly improves processing accuracy. Therefore, the rounded corner processing technology for square parts in this invention improves processing accuracy, meets the product's processing accuracy requirements, and ensures product quality.

[0039] Since the altimeter has the advantages of high accuracy and simple operation, in step S10 of this embodiment, the position of the square part 1 on the V-shaped bidirectional punch forming machine is adjusted by the V-shaped bidirectional punch forming machine, and the square part 1 is aligned with the help of the altimeter.

[0040] Specifically, the following steps are included:

[0041] S101, Press one side 12 of the angle to be processed 11 against the probe of the altimeter to zero the altimeter, while keeping the altimeter stationary;

[0042] S102, Press the tip 13 of the angle to be processed 11 against the probe of the height gauge, and adjust the position of the square part 1;

[0043] S103, Press the other side 12 of the corner to be processed 11 against the probe of the height gauge, and adjust the position of the square part 1;

[0044] S104. Repeat steps S102 and S103 until both sides 12 of the corner to be processed 11 press against the probe of the height gauge, and the height gauge displays a value of 0. When the tip 13 of the corner to be processed 11 presses against the probe of the height gauge, the height gauge displays a value of a. At this point, the alignment of the square part 1 is completed. The distance from the tip 13 of the corner to be processed 11 to the center O of its rounded corner 14 is b, the radius of the rounded corner 14 of the corner to be processed 11 is r, and a = br.

[0045] Through the above steps, the center O of the fillet 14 can be accurately aligned with the rotation axis of the V-shaped bidirectional punch forming machine, avoiding excessive or insufficient grinding and further improving the processing accuracy.

[0046] In this embodiment, before step S10, there is another step:

[0047] S0. Use computer drawing software to draw the machining drawing of square part 1. Measure b and r according to the machining drawing. Calculate a according to the formula a=br.

[0048] The computer graphics software in this embodiment includes two-dimensional graphics software and three-dimensional graphics software.

[0049] Specifically, two-dimensional drawing software includes CAD drawing software and CAXA electronic drawing board, while three-dimensional drawing software includes SolidWorks, Unigraphics NX, and Pro / Engineer. Of course, other computer drawing software can also be used, and this embodiment does not limit this.

[0050] In step S10 of this embodiment, the V-shaped bidirectional punch forming device has a V-shaped block 2 and a C-shaped clamp 3 that cooperate with each other. The V-shaped block 2 has a V-shaped groove. First, the V-shaped groove is cleaned, and then the square part 1 is fixed in the V-shaped groove by the bolt 4 on the C-shaped clamp 3, so that the two sides 12 of the square part 1 at the corner to be processed 11 respectively make precise contact with the corresponding groove surface of the V-shaped groove, thereby realizing the clamping of the square part 1.

[0051] In step S10 of this embodiment, before clamping the square part 1, the square part 1 is first inspected by a testing fixture to check its dimensions. Only after it passes the inspection can it be clamped.

[0052] The testing fixture in this embodiment can be a vernier caliper, height gauge, or dimension measuring instrument. Of course, other testing fixtures can also be used, and this embodiment does not limit them.

[0053] In step S20 of this embodiment, the method for adjusting the rotation angle of the V-shaped bidirectional punch forming machine is a conventional method used by those skilled in the art, and will not be described in detail here.

[0054] In step S30 of this embodiment, the magnetic table of the optical curve projection grinding machine is first cleaned, then the V-shaped bidirectional punch former is placed on the magnetic table, the position of the V-shaped bidirectional punch former is corrected, and the magnetic table control switch is turned on to fix the V-shaped bidirectional punch former. The correction method is a conventional method well known to those skilled in the art and will not be described in detail here.

[0055] In step S40 of this embodiment, the magnified film is manufactured according to the processing drawings. The method for manufacturing the magnified film is also a conventional method well known to those skilled in the art, and will not be described in detail here.

[0056] In step S50 of this embodiment, the machining trajectory line is drawn by those skilled in the art using existing programming languages, and will not be described in detail here.

[0057] The above is only one embodiment of the present invention. There are many other embodiments, which will not be described in detail here. By comparing the above embodiments with the prior art, it is obvious that the rounded corner processing technology of the square parts of the present invention improves the processing accuracy, meets the processing accuracy requirements of the product, and ensures the product quality.

[0058] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. A process for rounding the corners of a square piece, characterized in that, The method comprises the following steps: S10, clamping the square piece to the V-shaped bidirectional punch former and aligning to make the center of the round corner of the angle to be machined of the square piece coaxial with the rotation axis of the V-shaped bidirectional punch former; S20, setting the rotation angle of the V-shaped bidirectional punch former between-45° and 45°, so that the rotation angle of the square piece towards the two sides of the angle to be machined is 45° respectively; S30, placing the V-shaped bidirectional punch former and the square piece which are aligned and have the rotation angle adjusted to the magnetic table of the optical curve projection grinder for positioning; S40, projecting the square piece to the projection screen of the optical curve projection grinder through the projection magnification device of the optical curve projection grinder, and aligning the projection of the square piece with the finished product contour line of the square piece in the multiple image film on the projection screen by adjusting the magnetic table, when aligned, the two edges corresponding to the two sides of the angle to be machined on the projection coincide with the two edges of the round corner in the multiple image film, and the two edges corresponding to the two sides of the angle to be machined on the projection are tangent to the round corner; S50, driving the square piece to rotate back and forth between-45° and 45° through the V-shaped bidirectional punch former, and at the same time, the machining device of the optical curve projection grinder performs round corner forming grinding machining on the angle to be machined of the square piece according to the machining track line corresponding to the round corner in the multiple image film which is preset in the optical curve projection grinder.

2. The corner rounding process of a square piece according to claim 1, wherein, In step S10, the position of the square piece on the V-shaped bidirectional punch former is adjusted through the V-shaped bidirectional punch former, and the square piece is aligned by means of the height gauge.

3. The corner rounding process for a square piece according to claim 2, wherein, The alignment of the square piece by the height gauge comprises the following steps: S101, pressing one of the sides of the angle to be machined towards the probe of the height gauge to realize the zero setting of the height gauge, while keeping the height gauge stationary; S102, pressing the tip of the angle to be machined towards the probe of the height gauge, and adjusting the position of the square piece; S103, pressing the other side of the angle to be machined towards the probe of the height gauge, and adjusting the position of the square piece; S104, repeating steps S102 and S103 until the two sides of the angle to be machined are pressed towards the probes of the height gauge respectively, and the height gauges show the value 0, and the tip of the angle to be machined is pressed towards the probe of the height gauge, and the height gauge shows the value a, at this time, the alignment of the square piece is completed; wherein the distance from the tip of the angle to be machined to the center of the round corner thereof is b, the radius of the round corner of the angle to be machined is r, and a=b-r.

4. The corner rounding process for a square piece according to claim 3, wherein Before step S10, there is also a step: S0, drawing the processing drawing of the square piece by means of computer drawing software, measuring b and r according to the processing drawing, and calculating a according to the formula a=b-r.

5. The corner rounding process for a square piece according to claim 1, wherein In step S10, the V-shaped two-way punch former has a V-shaped block and a C-shaped clamp matched with each other, the V-shaped block has a V-shaped groove, the V-shaped groove is cleaned first, then the square piece is fixed in the V-shaped groove through the bolt on the C-shaped clamp, the two side surfaces of the square piece at the angle to be processed respectively precisely contact the corresponding groove surfaces of the V-shaped groove, so that the clamping of the square piece is realized.

6. The corner rounding process of a square piece according to claim 5, wherein, In step S10, before clamping the square piece, the square piece is subjected to size detection first, and then clamped after passing the size detection.

7. The corner rounding process for a square piece according to claim 1, wherein In step S30, the magnetic table is cleaned first, then the V-shaped two-way punch former is placed on the magnetic table, then the position of the V-shaped two-way punch former is corrected, and the magnetic table control switch is turned on to realize the fixation of the V-shaped two-way punch former.

8. The corner rounding process for a square piece according to claim 4, wherein, In step S40, the multiple drawing film is made according to the processing drawing.

9. The corner rounding process for a square piece according to claim 4, wherein, The computer drawing software includes two-dimensional drawing software and three-dimensional drawing software.

10. The corner rounding process of a square piece according to claim 9, wherein, The two-dimensional drawing software includes CAD drawing software and CAXA electronic drawing board, and the three-dimensional drawing software includes SolidWorks, Unigraphics NX and Pro / Engineer.

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