A processing method for rapidly removing internal material of plate-like parts

Abstract

The present application belongs to the field of mechanical manufacturing cold processing, and particularly relates to a processing method for quickly removing internal material of plate parts. Firstly, two vertical milling cutters suitable for the material to be cut are prepared, and the diameters of the two vertical milling cutters have a certain size difference. A larger diameter cutter is selected to call a prepared internal profile processing program for processing, and an oblique line down cutting mode is adopted, and the internal profile and the bottom surface depth are not processed to the final size. A smaller diameter cutter is selected to call the original internal profile processing program for reprocessing, that is, the cutter is moved along the center track of the larger diameter cutter, and the bottom surface depth is processed to the size or cut through. The program is called to complete the finishing of the internal profile size, so that the part geometric size requirement is met. The present application provides a selection strategy of cutter specifications and a cutting method when the plate parts are rough machined to remove material. The method can safely and quickly remove the internal material of the parts, improve the part processing efficiency, and reduce the production cost.

Description

Technical Field

[0001] This invention belongs to the field of cold working in mechanical manufacturing, specifically relating to a method for rapidly removing internal material from sheet metal parts. Using this method, it is possible to quickly achieve... Figure 1 The diagram illustrates CNC machining of sheet metal parts requiring the removal of internal material features. This method improves machining efficiency, reduces production costs, and enhances safety during the machining process. Background Technology

[0002] Previously, machining these types of parts on machining centers or CNC milling machines mainly employed two methods: First, using an end mill to mill from the inside out, gradually expanding the milling range to remove the internal material. This method was inefficient, and prolonged cutting easily caused tool wear. Second, the internal contour edge was left to allow for tool radius reduction, cutting the internal material off as a whole. While this method was more efficient, it had significant cutting instability, as the tool was prone to breakage just before cutting off the entire internal material, leading to part scrap or other safety hazards. The safety of the entire cutting process was inherently unstable. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by this invention is: how to provide a machining method that can quickly remove internal material from sheet metal parts using an end mill on a CNC milling machine.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides a processing method for rapidly removing internal material from sheet metal parts, the method comprising:

[0007] Step 1: First, prepare two end mills suitable for the material being cut, with a certain difference in diameter.

[0008] Step 2: Next, select a larger diameter tool and call the pre-programmed inner contour machining program for machining. Use the oblique cutting method, and do not machine the inner contour and bottom surface depth to the final size.

[0009] Step 3: Again, use a smaller diameter tool to call the original internal contour machining program to machine it once more, that is, follow the center trajectory of the larger diameter tool to machine to the size or cut through the bottom surface in the depth direction;

[0010] Step 4: Finally, call the program to complete the finishing of the inner contour dimensions to meet the geometric requirements of the part.

[0011] In addition, the present invention also provides a processing method for quickly removing the internal material of sheet metal parts. The processing method is implemented by using two end mills, one with a larger diameter cutter (3) and the other with a smaller diameter cutter (4), to cut off the whole piece of material (2) inside the sheet metal part (1).

[0012] Among them, the larger diameter tool (3) and the smaller diameter tool (4) have a cutting edge passing through the center of the tool end teeth, and their diameter dimensions have a certain difference;

[0013] First, the machining is carried out with a larger diameter tool (3), using a cutting method along the shape with an oblique line, leaving a margin in the inner contour direction and a margin in the bottom depth direction.

[0014] After the larger diameter tool (3) finishes cutting, the cut-off internal block material (2) and the plate part (1) are connected by a bottom surface, still forming a whole.

[0015] Then, a smaller diameter tool (4) is selected for machining, leaving a margin in the inner contour direction and no margin in the bottom depth direction, and cutting through.

[0016] Among them, the smaller diameter cutting tool (4) has a certain gap between the sheet metal part (1) and the whole piece of internal material (2) to be cut off, so as not to cause interference between the three and damage the cutting tool, thereby completing the part processing task requirements.

[0017] The larger diameter tool (3) and the smaller diameter tool (4) have a diameter difference of 2 mm or more.

[0018] When the larger diameter tool (3) is used for machining, a allowance of 0.2 to 0.5 mm is left in the inner contour direction.

[0019] When the larger diameter tool (3) is used for machining, a depth allowance of 0.5 to 1 mm is left on the bottom surface.

[0020] When the smaller diameter tool (4) is used for machining, a allowance of 1.2 to 1.5 mm is left in the inner contour direction.

[0021] When the smaller diameter tool (4) is used for machining, no allowance is left in the depth direction of the bottom surface, and the cutting depth is 0.1 to 0.5 mm.

[0022] (III) Beneficial Effects

[0023] Compared with existing technologies, this invention provides a strategy for selecting tool specifications and a cutting method for rough machining of sheet metal parts. This method can safely and quickly remove internal materials from parts, improve part processing efficiency, and reduce production costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the sheet metal parts processed by this invention.

[0025] Figure 2 This is a schematic diagram of the process of machining parts with a larger diameter according to the present invention.

[0026] Figure 3 This is a schematic diagram of the process of machining parts with a smaller diameter according to the present invention.

[0027] Among them, 1: sheet metal parts, 2: whole piece of internal material to be cut, 3: larger diameter cutting tool, and 4: smaller diameter cutting tool. Detailed Implementation

[0028] 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.

[0029] To solve the above-mentioned technical problems, the present invention provides a processing method for rapidly removing internal material from sheet metal parts, the method comprising:

[0030] Step 1: First, prepare two end mills suitable for the material being cut, with a certain difference in diameter.

[0031] Step 2: Next, select a larger diameter tool and call the pre-programmed inner contour machining program for machining. Use the oblique cutting method, and do not machine the inner contour and bottom surface depth to the final size.

[0032] Step 3: Again, use a smaller diameter tool to call the original internal contour machining program to machine it once more, that is, follow the center trajectory of the larger diameter tool to machine to the size or cut through the bottom surface in the depth direction;

[0033] Step 4: Finally, call the program to complete the finishing of the inner contour dimensions to meet the geometric requirements of the part.

[0034] In addition, the present invention also provides a processing method for quickly removing the internal material of sheet metal parts. The processing method is implemented by using two end mills, one with a larger diameter cutter (3) and the other with a smaller diameter cutter (4), to cut off the whole piece of material (2) inside the sheet metal part (1).

[0035] Among them, the larger diameter tool (3) and the smaller diameter tool (4) have a cutting edge passing through the center of the tool end teeth, and their diameter dimensions have a certain difference;

[0036] First, the machining is carried out with a larger diameter tool (3), using a cutting method along the shape with an oblique line, leaving a margin in the inner contour direction and a margin in the bottom depth direction.

[0037] After the larger diameter tool (3) finishes cutting, the cut-off internal block material (2) and the plate part (1) are connected by a bottom surface, still forming a whole.

[0038] Then, a smaller diameter tool (4) is selected for machining, leaving a margin in the inner contour direction and no margin in the bottom depth direction, and cutting through.

[0039] Among them, the smaller diameter cutting tool (4) has a certain gap between the sheet metal part (1) and the whole piece of internal material (2) to be cut off, so as not to cause interference between the three and damage the cutting tool, thereby completing the part processing task requirements.

[0040] The larger diameter tool (3) and the smaller diameter tool (4) have a diameter difference of 2 mm or more.

[0041] When the larger diameter tool (3) is used for machining, a allowance of 0.2 to 0.5 mm is left in the inner contour direction.

[0042] When the larger diameter tool (3) is used for machining, a depth allowance of 0.5 to 1 mm is left on the bottom surface.

[0043] When the smaller diameter tool (4) is used for machining, a allowance of 1.2 to 1.5 mm is left in the inner contour direction.

[0044] When the smaller diameter tool (4) is used for machining, no allowance is left in the depth direction of the bottom surface, and the cutting depth is 0.1 to 0.5 mm.

[0045] Example

[0046] The specific working process of this embodiment is as follows: First, refer to... Figure 1 Prepare two end mills suitable for the material being cut. Each end mill must have a cutting edge passing through its center, and their diameters must have a certain difference. For example... like Figure 2 Medium-to-large diameter cutting tools (3) Figure 3 The smaller diameter cutting tool (4) is shown. Next, based on the requirements of the sheet metal part (1) drawing, a corresponding internal contour machining program is prepared, and a larger diameter cutting tool (3) is selected (e.g., The pre-programmed procedure is called for processing, using a diagonal cutting method along the shape. The inner contour and bottom depth are not processed to the final size. Specifically, a allowance of 0.2 to 0.5 mm is left in the inner contour direction, and a allowance of 0.5 to 1 mm is left in the bottom depth direction. The purpose of this step is to ensure that the inner whole material (2) to be cut off after processing and the sheet metal part (1) have a bottom surface as a connection, so that they remain a whole and will not cause squeezing or damage to the large-diameter tool (3) when the inner whole material (2) to be cut off falls off. Figure 2 As shown. Again, select a smaller diameter tool (4) (e.g.) Then, call the original inner contour machining program to process it again. The specific requirements for the inner contour and bottom surface depth are: leave a margin of 1.2 to 1.5 mm in the inner contour direction, that is, follow the center trajectory of the larger diameter tool (3) and leave no margin in the bottom surface depth direction, cutting through 0.1 to 0.5 mm. The purpose of this step is to make a certain gap between the smaller diameter tool (4) and the sheet metal part (1) and the whole piece of internal material (2) to be cut off, so that the three do not interfere with each other, so that the whole piece of internal material (2) to be cut off can be successfully dropped without damaging the smaller diameter tool (4). Figure 3 As shown. Finally, the program is called to complete the finishing of the inner contour dimensions to meet the geometric dimensional requirements of sheet metal parts (1).

[0047] 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 rapidly removing internal material from sheet metal parts, characterized in that, The method includes: Step 1: First, prepare two end mills suitable for the material being cut, with a certain difference in diameter. Step 2: Next, select a larger diameter tool and call the pre-programmed inner contour machining program for machining. Use the oblique cutting method, and do not machine the inner contour and bottom surface depth to the final size. Step 3: Again, use a smaller diameter tool to call the original internal contour machining program to machine it once more, that is, follow the center trajectory of the larger diameter tool to cut through the bottom surface in the depth direction; Step 4: Finally, call the program to complete the finishing of the inner contour dimensions to meet the geometric requirements of the part.

2. A method for rapidly removing internal material from sheet metal parts, characterized in that, The processing method is carried out using two end mills, one with a larger diameter (3) and the other with a smaller diameter (4), to cut off the whole piece of material (2) inside the sheet metal part (1). Among them, the larger diameter tool (3) and the smaller diameter tool (4) have a cutting edge passing through the center of the tool end teeth, and their diameter dimensions have a certain difference; First, the machining is carried out with a larger diameter tool (3), using the method of cutting along the shape at an angle, leaving a margin in the direction of the inner contour and a margin in the direction of the bottom depth; After the larger diameter tool (3) finishes cutting, the cut-off internal block of material (2) and the plate part (1) are connected by a bottom surface, still forming a whole; Then, use a smaller diameter tool (4) for machining, leaving allowance in the inner contour direction and no allowance in the bottom depth direction, and cut through.

3. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, The smaller diameter cutting tool (4) has a certain gap between the sheet metal part (1) and the whole piece of internal material (2) to be cut, so that the three will not interfere with each other and damage the cutting tool, thereby completing the part processing task requirements.

4. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, The diameter of the larger diameter tool (3) and the smaller diameter tool (4) has a difference of 2 mm or more.

5. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, When the larger diameter tool (3) is used for machining, a allowance of 0.2 to 0.5 mm is left in the inner contour direction.

6. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, When the larger diameter tool (3) is used for machining, a depth allowance of 0.5 to 1 mm is left on the bottom surface.

7. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, When the smaller diameter tool (4) is used for machining, a allowance of 1.2 to 1.5 mm is left in the inner contour direction.

8. The processing method for rapidly removing internal material from sheet metal parts as described in claim 2, characterized in that, When the smaller diameter tool (4) is used for machining, no allowance is left in the depth direction of the bottom surface, and the cutting depth is 0.1 to 0.5 mm.

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