Precise turning method for complex molded surface of diamond roller female die

Abstract

The invention relates to the technical field of machining, in particular to a diamond roller female die complex molded surface precision turning method, which comprises the following steps: firstly, determining a cutter combination machining scheme capable of ensuring that the whole molded surface does not generate machining interference through geometric simulation, and clamping a female die on a precision numerical control lathe through a zero point positioning system; rough turning is conducted on an inner hole and a molded surface, and finish turning allowance is reserved in the normal direction of the molded surface; and after machining is completed, the female die and the zero-point positioning system are taken down together and placed on a profile gauge or a three-coordinate measuring machine, and the molded surface of the female die is measured. The method has the advantages that a roller female die numerical control machining scheme is adopted, a special numerical control cutter structure is designed and manufactured, and a multi-cutter machining cutter connecting error elimination mode is adopted. The machining efficiency is greatly improved, and the tool cost is saved. The processing efficiency of the roller female die is improved by about 3 times, and the cost is reduced by about 1 / 5.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly to a precision turning method for a complex surface of a female die of a diamond roller. Background Art

[0002] The female die is an essential key part in the manufacturing process of diamond rollers, and its precision directly determines the precision of the manufactured diamond rollers. Existing technical solutions all use template tools to perform forming cutting on the complex surface of the female die of the diamond roller. There are disadvantages such as long preparation cycle, high manufacturing cost, and large machining errors on the surface. Summary of the Invention

[0003] The purpose of the present invention is to improve the machining precision of the complex surface of the female die of the diamond roller, and at the same time significantly shorten the machining cycle of the female die and reduce the manufacturing cost of the diamond roller.

[0004] The present invention provides a precision turning method for a complex surface of a female die of a diamond roller. The female die of the diamond roller has a rotating body structure, and the inner hole surface corresponds one-to-one with the outer surface of the diamond roller. The shape and precision of the female die determine the final shape and precision of the roller. The precision turning method for the complex surface of the female die of the diamond roller is different from the current machining method using template tools.

[0005] First, a tool combination machining plan that can ensure no machining interference occurs on the entire surface is determined through geometric simulation. After the shape of the female die as described above undergoes geometric simulation, the tools and machining plan as described in Figure 1 are determined. Figure 3 In Figure 3 , A is the tool change point selection, and BCD are the machining plans for each section respectively. Then, the female die is clamped on a precision CNC lathe through a zero-point positioning system, and its inner hole and surface are rough-turned, leaving a finishing allowance x in the normal direction of the surface. Next, the selected tools are respectively measured for the actual angle and the tip radius R on a video comparator, installed on the CNC lathe, and the coordinate position of the tool tip relative to the machine tool is obtained using an on-line tool setter. The above tool angles, R, and coordinate positions are input into the CNC machining system. Then, precision turning machining is carried out according to the formulated plan. After the machining is completed, the female die and the zero-point positioning system are removed together and placed on a contour measuring instrument or a coordinate measuring machine to measure the surface of the female die. If there are parts out of tolerance, the female die is reconnected to the machine tool using the zero-point positioning system, and the out-of-tolerance parts are re-machined. After all dimensions are detected to be qualified, the zero-point positioning is removed, and the machining of the surface of the female die is completed.

[0006] In the existing method of machining the female die of a diamond roller with a template tool, one tool can only machine a specific profile. When different profiles need to be machined, corresponding template tools must be remanufactured, and the manufacturing cost and cycle will affect the production progress of the diamond roller. Secondly, when individual parts of the female die are unqualified in machining, the template tool must be ground, and then the entire profile of the female die must be machined again. It often requires repeated machining many times to ensure that the accuracy of the female die meets the design requirements.

[0007] Advantages of the present invention:

[0008] The present invention provides a precision turning machining method for the complex profile of the female die of a diamond roller. Using a set of tools, all shapes of female dies can be machined. And during the machining process, separate compensation machining can be carried out on unqualified parts, greatly improving the machining efficiency and saving tool costs. The machining efficiency of the female die of the roller is increased by about 3 times, and the cost is reduced by about 1 / 5.

[0009] Adopting a precision CNC lathe, determining the machining plan through geometric simulation, installing the female die part on the machine tool using a zero-point positioning system, selecting appropriate customized CNC tools and standard alloy blades to replace the method of machining the profile of the female die with a template tool, and cooperating with a coordinate measuring machine to detect the machining dimensions, realizing the machining of the complex profile of the female die with micron-level accuracy. The core technologies include: the CNC machining plan for the female die of the roller, the designed and manufactured special CNC tool structure, the elimination method of the tool joint error in multi-tool machining, etc.

[0010] Explanation of the drawings in the specification

[0011] Figure 1 It is a schematic diagram of the complex profile of the female die of a diamond roller; the inner hole is the part to be machined, with a linear dimension tolerance of ±0.01 and an angular dimension tolerance of ±5'.

[0012] Figure 2 It is an example of the design drawing of the currently used template tool; the shape corresponds to that of the female die, with an accuracy of 1 / 2 of the female die. When machining, it is in a cantilever state, and the entire cutting edge of the tool participates in the cutting process at the same time.

[0013] Figure 3 It is a schematic diagram of the machining method of the present invention. Detailed implementation method

[0014] The present invention will be further explained below in conjunction with specific implementation embodiments, but it is not limited to the present invention. The structures, ratios, sizes, etc. shown in the specification drawings are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that the present invention can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0015] In this embodiment, three suitable cutting tools can be selected to complete the machining of this part.

[0016] Figure 1 It is a schematic diagram of a diamond roller female die, which is a rotary body structure. The inner hole profile corresponds one by one to the outer profile of the diamond roller. The shape and precision of the female die determine the final shape and precision of the roller. The precision turning machining method for the complex profile of the diamond roller female die is different from the current machining method using template cutting tools.

[0017] First, determine the cutting tool combination machining plan that can ensure that no machining interference will occur on the entire profile through geometric simulation. As shown above Figure 1 After the shape of the female die is geometrically simulated, determine as shown in Figure 3 the cutting tools and machining plan in it. Figure 3 In it, A is the tool change point selection, and BCD are the machining plans for each section respectively; then clamp the female die on the precision CNC lathe through the zero-point positioning system, rough turn its inner hole and profile, and leave a finishing allowance x along the normal direction of the profile; next, measure the actual angle and the tip radius R of the selected cutting tools respectively on the video comparator, install them on the CNC lathe, and use the on-line tool setter to obtain the coordinate position of the tool tip relative to the machine tool. Input the above tool angles, R, and coordinate positions into the CNC machining system; then perform precision turning machining according to the proposed plan; after the machining is completed, remove the female die and the zero-point positioning system together, and place them on the contour measuring instrument or the coordinate measuring machine to measure the profile of the female die. If there are parts out of tolerance, use the zero-point positioning system to reconnect the female die to the machine tool and perform supplementary machining on the out-of-tolerance parts. After all dimensions are detected to be qualified, remove the zero-point positioning, and the profile of the female die is then machined.

[0018] Matters not covered by the present invention are well-known technologies.

[0019] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision turning method for the complex surface of a diamond roller female die, characterized in that: The described precision turning method for the complex surface of the diamond roller female die first determines the tool combination machining plan that can ensure no machining interference occurs on the entire surface through geometric simulation; after the shape of the female die is geometrically simulated, the tool and machining plan are determined, the tool change point selection is determined, and segmented machining is carried out; then the female die is clamped on a precision CNC lathe through a zero-point positioning system, and its inner hole and surface are rough turned, leaving a finishing allowance along the normal direction of the surface.

2. The precision turning method for the complex surface of the female die of the diamond roller according to claim 1, wherein: The actual angles and the tip radius R of the selected tools are respectively measured on a video comparator, installed on the CNC lathe, and the coordinate position of the tool tip relative to the machine tool is obtained using an on-line tool setter. The above tool angles, R, and coordinate positions are input into the CNC machining system; precision turning is carried out according to the proposed plan; after machining is completed, the female die and the zero-point positioning system are removed together and placed on a contour measuring instrument or a coordinate measuring machine to measure the surface of the female die.

3. The precision turning machining method for the complex surface of the diamond roller female die according to claim 1, characterized in that: If there are parts with out-of-tolerance, the female die is reconnected to the machine tool using the zero-point positioning system, and the out-of-tolerance parts are re-machined. After all dimensions are detected to be qualified, the zero-point positioning is removed, and the machining of the surface of the female die is completed.

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