Processing device for blazed cylindrical grating

Abstract

A blazed cylindrical grating machining device comprises a rotary motion shaft, an X-axis linear module used for driving the rotary motion shaft is installed below the rotary motion shaft, a fly cutter disc is installed on the end face of the rotary motion shaft, and a diamond cutter is installed on the shaft face of the fly cutter disc. The shape of a tool nose of the diamond cutter is consistent with the shape of a notch groove of the blazed cylindrical grating to be machined, the rotating radius of the diamond cutter is the same as the curvature radius of the blazed cylindrical grating to be machined, and a tool used for installing the blazed cylindrical grating to be machined is arranged in the axis direction of the rotating motion shaft. The vertical height of the center of the blazed cylindrical grating to be machined is the same as the height of the axis of the fly-cutter disc, and a Z-axis linear module used for driving the tool is arranged below the tool. The blazed cylindrical grating machining device is low in cost and easy to operate, machining precision is guaranteed, and meanwhile machining efficiency of large-breadth blazed cylindrical gratings can be improved. The method has the advantage of effectively simplifying the manufacturing process of the blazed cylindrical grating.

Description

Technical Field

[0001] The utility model relates to the technical field of optical element processing, in particular to a processing device for a blazed cylindrical grating. Background Art

[0002] A grating is an optical device composed of a large number of parallel slits of equal width and spacing. Based on the principle of slit diffraction, gratings have a wide range of applications in spectrometers, optical information processing, optical communications, and precision measurement. Compared to flat gratings, cylindrical gratings not only achieve diffraction dispersion but also provide focusing capabilities. Under the same performance conditions, the use of cylindrical gratings can reduce the number of components and thus reduce system complexity, thereby improving optical performance. Therefore, cylindrical gratings have a wider range of application prospects.

[0003] The groove cross-section of the cylindrical blazed grating is triangular, distributed periodically and arranged closely, which has the problems of difficult processing, high cost and small format. At present, most cylindrical gratings produced at home and abroad use photolithography technology, while domestic grating processing technology is relatively backward. The etching exposure technology used is to photolithography on the surface of the workpiece coated with a photosensitive film layer, and then development, corrosion and other processes are required. The work efficiency is low, there is no detection function, the production process is toxic and pollutes the environment, and this process can generally only be used to manufacture planar gratings, and cylindrical gratings cannot be processed. In view of the shortcomings of the existing technology, a new blazed cylindrical grating processing device is needed to reduce the processing difficulty of cylindrical blazed gratings, reduce processing costs, and increase the grating format. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for processing a blazed cylindrical grating to solve the technical problems raised in the above-mentioned background technology.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A processing device for a blazed cylindrical grating comprises a rotating shaft, an X-axis linear module for driving the rotating shaft to move along the X-axis direction is installed below the rotating shaft, a flying cutter disc is installed on the end face of the rotating shaft, a diamond tool is installed on the axial surface of the flying cutter disc, the tip shape of the diamond tool is consistent with the shape of the groove of the blazed cylindrical grating to be processed, and the rotation radius of the diamond tool is the same as the curvature radius of the blazed cylindrical grating to be processed, a tool for mounting the blazed cylindrical grating to be processed is provided in the axial direction of the rotating shaft, the vertical height of the center of the blazed cylindrical grating to be processed is the same as the axial height of the flying cutter disc, and a Z-axis linear module for driving the tool to perform stepping motion along the Z-axis direction is provided below the tool.

[0007] In the above utility model, further, a cushion block is installed on the Z-axis linear module, and the tooling is installed on the Z-axis linear module through the cushion block.

[0008] In the above utility model, further, the tooling is provided with a supporting protrusion, and the supporting protrusion is provided with a groove for installing the blazed cylindrical grating to be processed, and the blazed cylindrical grating to be processed is fixedly installed in the groove by a fixing screw.

[0009] In the above utility model, further, a workbench is provided below the Z-axis linear module, and the Z-axis linear module is installed on the workbench.

[0010] In the above utility model, further, the X-axis linear module and the Z-axis linear module are both fully enclosed stepping linear modules.

[0011] The beneficial effects of the utility model are:

[0012] The processing device for the blazed cylindrical grating provided by the utility model is low in cost and easy to operate. While ensuring processing accuracy, it can also improve the processing efficiency of processing large-format blazed cylindrical gratings; it has the advantage of effectively simplifying the manufacturing process of processing blazed cylindrical gratings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 Schematic diagram of the blazed cylindrical grating structure;

[0015] Figure 3 for Figure 2 Front view of

[0016] Figure 4 for Figure 2 side view.

[0017] In the figure, 1-rotating motion axis, 2-flying cutter disc, 3-diamond tool, 4-X-axis linear module, 5-workbench, 6-Z-axis linear module, 7-spacer, 8-fixing screw, 9-blazed cylindrical grating, 10-tooling, 11-supporting protrusion. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0020] Example:

[0021] A processing device for blazed cylindrical grating, see attached Figure 1 As shown, it includes a rotating shaft 1, which is driven to rotate by a driving device including but not limited to a CNC motor. An X-axis linear module 4 is installed below the rotating shaft 1 to drive the rotating shaft 1 to move along the X-axis direction. A flying cutter disk 2 is installed on the end face of the rotating shaft 1. A diamond tool 3 is installed on the axial surface of the flying cutter disk 2. The tip shape of the diamond tool 3 is consistent with the groove shape of the blazed cylindrical grating 9 to be processed. See the attached Figure 2 and attached Figure 4 As shown, the rotation radius of the diamond tool 3 is the same as the curvature radius of the blazed cylindrical grating 9 to be processed. Figure 1 As shown, a fixture 10 for mounting the blazed cylindrical grating to be machined is disposed along the axis of the rotary motion axis 1. Specifically, the fixture 10 is provided with a retaining protrusion 11, which is provided with a groove for mounting the blazed cylindrical grating 9 to be machined. The blazed cylindrical grating 9 to be machined is fixedly mounted in the groove via a fixing screw 8. Below the fixture 7 is a Z-axis linear module 6 for driving the fixture 7 to perform stepping motion along the Z-axis. Below the Z-axis linear module 6 is a worktable 5, on which the Z-axis linear module 6 is mounted. Furthermore, the central vertical height of the blazed cylindrical grating 9 to be processed should be the same as the axial height of the flying cutter disk 2. In order to achieve the above effect, a pad 7 is installed on the Z-axis linear module 6, and the tooling 10 is installed on the Z-axis linear module 6 through the pad 7. The pad 7 can be adjusted in thickness according to the central vertical height of the blazed cylindrical grating 9 to ensure that the central vertical height of the blazed cylindrical grating 9 to be processed is the same as the axial height of the flying cutter disk 2.

[0022] Specifically, in the implementation process, the size design of the flying cutter disc 2 and the diamond tool 3 is completed according to the cylindrical curvature radius of the blazed cylindrical grating 9 to be processed, so that the rotation radius of the diamond tool 3 after installation is consistent with the surrounding Figure 4 The curvature radius R of the blazed cylindrical grating 9 to be processed is the same as shown. According to the grating groove shape of the blazed cylindrical grating 9 to be processed, the tip shape of the diamond tool 3 is designed. The blazed cylindrical grating 9 to be processed is clamped and fixed in the groove of the supporting protrusion 11 of the tool 10 by fixing the screw 8. Move the diamond tool 3 to the edge position of one side of the blazed cylindrical grating 9 to be processed, operate the X-axis linear module 4 to adjust the position of the diamond tool 3, so that the diamond tool 3 is in contact with the concave surface of the blazed cylindrical grating 9 to be processed. Continue to refer to the attached Figure 3 As shown, the X-axis linear module 4 is operated according to the grating groove depth H of the blazed cylindrical grating 9 to be processed to determine the feed depth of the diamond tool 3 so that it is equal to the groove depth H.

[0023] The motion rate F of the Z-axis linear module 6 is then set based on the grating constant d of the blazed cylindrical grating 9 to be processed and the rotational speed S of the rotary motion axis 1. The motion rate F of the Z-axis linear module 6 (unit: mm / min), the rotational speed S of the rotary motion axis 1 (unit: r / min), and the grating constant d (unit: mm) of the blazed cylindrical grating 9 to be processed satisfy the following relationship:

[0024] d=F / S

[0025] After completing the above steps, the rotary motion axis 1 and the Z-axis linear module 6 are activated, and the diamond tool 3 begins to groove the blazed cylindrical grating 9 to be machined. After the first groove is completed, the Z-axis linear module 6 advances one step, finally completing the machining of all the grooves of the blazed cylindrical grating 9. It should be noted that to ensure greater rigidity during use and prevent damage to the linear modules by cutting chips, both the X-axis and Z-axis linear modules are configured as fully enclosed stepper linear modules.

[0026] In summary, the processing device for the blazed cylindrical grating provided by the present invention is low-cost and easy to operate. While ensuring processing accuracy, it can also improve the processing efficiency of large-format blazed cylindrical gratings; it has the advantage of effectively simplifying the manufacturing process of blazed cylindrical gratings.

[0027] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A blazed cylindrical grating processing device, characterized in that: It includes a rotating motion shaft, an X-axis linear module for driving the rotating motion shaft to move along the X-axis direction is installed below the rotating motion shaft, a flying cutter disk is installed on the end face of the rotating motion shaft, a diamond tool is installed on the axial surface of the flying cutter disk, the tip shape of the diamond tool is consistent with the shape of the groove of the blazed cylindrical grating to be processed, and the rotation radius of the diamond tool is the same as the curvature radius of the blazed cylindrical grating to be processed, a tooling for installing the blazed cylindrical grating to be processed is provided in the axial direction of the rotating motion shaft, the central vertical height of the blazed cylindrical grating to be processed is the same as the axial height of the flying cutter disk, and a Z-axis linear module for driving the tooling to perform stepping action along the Z-axis direction is provided below the tooling.

2. The blazed cylindrical grating processing device according to claim 1, characterized in that: A cushion block is installed on the Z-axis linear module, and the tooling is installed on the Z-axis linear module through the cushion block.

3. The processing device for a blazed cylindrical grating according to claim 1, characterized in that: The tooling is provided with a supporting convex portion, and the supporting convex portion is provided with a groove for mounting the blazed cylindrical grating to be processed. The blazed cylindrical grating to be processed is fixedly mounted in the groove by a fixing screw.

4. The processing device for a blazed cylindrical grating according to claim 1, characterized in that: A workbench is provided below the Z-axis linear module, and the Z-axis linear module is mounted on the workbench.

5. The processing device for a blazed cylindrical grating according to claim 1, characterized in that: The X-axis linear module and the Z-axis linear module are both fully enclosed stepping linear modules.

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