A high-precision fly-cutting device for a multi-faceted rotating mirror

Abstract

The utility model discloses a high accuracy fly cutter processingequipment for multi -faced mirror, through the fixed base stable installation multi -faced mirror, and fix the fixed base bottom on numerical control machine tool B axle workstation. Fix the main shaft on the X axle of numerical control machine tool, utilize the main shaft drive fly cutter plate rotation. Fly cutter plate in the rotation process will its fixed processing tool aim at any one side in multi -faced mirror, and carry out fly cutter processing. And in the fly cutter plate rotation process, utilize numerical control machine tool X axle to move back and forth, make fly cutter plate and the processing surface of multi -faced mirror contact 2, thereby realize the overall processing to the processing surface. When a processing surface is processed, through numerical control machine tool B axle rotation fixed base to the next processing surface and processes, until all processing surfaces are processed, complete the fly cutter processing procedure of multi -faced mirror fast, thereby solve the present multi -faced mirror's superfinishing and adopt X, Z, Y, C four axle linkage scraping processing, and the technical problem of long processing cycle.

Description

Technical Field

[0001] This utility model relates to the field of multifaceted mirror technology, specifically to a high-precision flying knife processing device for multifaceted rotating mirrors. Background Technology

[0002] A three-dimensional polyhedron consisting of two parallel and congruent polygonal bases and several parallelogram-shaped lateral faces is called a prism. When a prism has a principal axis, it becomes a polyhedron mirror.

[0003] Multi-faceted rotating mirrors are a highly efficient beam steering solution that achieves rapid beam scanning through mechanical rotation without moving the entire optical system. This makes them widely used in fields such as medical imaging, thin film inspection, materials processing, laser printing plate making, and printed circuit board inspection. Furthermore, with the rapid development of autonomous driving technology, multi-faceted rotating mirror LiDAR solutions are currently considered a superior solution for intelligent vehicles.

[0004] In use, the multi-faceted rotating mirror is typically mounted on the spindle of an electric motor. Through the high-speed rotation of the multi-faceted mirror, it enables large-area, ultra-high-speed, high-precision, and highly repeatable laser beam scanning. Factors such as angular accuracy and surface quality directly affect the scanning accuracy and effect. This necessitates that the shape accuracy of the multi-faceted rotating mirror reach the micrometer or even sub-micrometer level, and the surface roughness reach the nanometer or even sub-nanometer level, presenting significant challenges to manufacturing.

[0005] Because aluminum has good reflectivity across most of the visible light range, the optical performance of multifaceted rotating mirrors is typically verified by fabricating high-precision aluminum alloy optical components. Currently, the ultra-precision machining of multifaceted rotating mirrors involves four-axis simultaneous scraping along the X, Z, Y, and C axes, resulting in a long machining cycle. Utility Model Content

[0006] The purpose of this invention is to provide a high-precision flying knife machining device for multi-faceted rotating mirrors, in order to solve the technical problem that the current ultra-precision machining of multi-faceted rotating mirrors uses four-axis linkage scraping machining with X, Z, Y, and C axes, which results in a long machining cycle.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A high-precision flying knife machining device for a multi-faceted rotating mirror is based on a CNC machine tool. The CNC machine tool has a fixed base on its B-axis worktable, and a multi-faceted rotating mirror is mounted on the top of the fixed base. The B-axis worktable is fixedly connected to the Z-axis of the CNC machine tool. The CNC machine tool has a spindle in the vertical X-axis direction, and a flying knife disk is connected to the spindle. A machining tool is built into the wall of the flying knife disk. The other side of the flying knife disk is opposite to the multi-faceted rotating mirror, and the machining tool is in contact with any one side of the multi-faceted rotating mirror.

[0009] A further technical solution is that the outer circumferential surface of the fly cutter disc is provided with a placement groove along its radial direction, and the processing tool is placed inside the placement groove.

[0010] A further technical solution is that the processing tool includes a cutting tool and a fixing block. The bottom of the placement groove is provided with a limiting groove for placing the cutting tool. The placement groove is adapted to contact the fixing block. The fixing block is provided with a first through hole. The placement groove is provided with a threaded hole. A screw is passed through the first through hole and connected to the threaded hole to fix the fixing block in the placement groove.

[0011] A further technical solution is that the circumferential side of the flying knife disk is provided with multiple counterweight holes facing the center axis, and the counterweight holes are used to connect counterweight screws.

[0012] A further technical solution is that the fixing base includes a fixing plate, the fixing plate is provided with a first fixing hole, and a screw is passed through the first fixing hole to fix the fixing plate on the B-axis worktable. The fixing plate is also provided with a second fixing hole, the top surface of the second fixing hole is provided with a through-hole cylinder and connected to its bottom surface, and the top of the through-hole cylinder is connected to the multi-faceted rotating mirror.

[0013] A further technical solution is that the multifaceted rotating mirror has multiple third fixing holes in its inner center, and screws are used to connect it to the top surface of the through-hole cylinder through the third fixing holes.

[0014] The beneficial effects of this utility model are as follows:

[0015] After the multi-faceted rotating mirror is stably installed using a mounting bracket, the bottom of the bracket is fixed to the B-axis worktable of the CNC machine tool. A spindle is fixed on the X-axis of the CNC machine tool, and the spindle drives the fly cutter head to rotate. During rotation, the fly cutter head aligns its fixed machining tool with any face of the multi-faceted rotating mirror and performs fly cutter machining. While the fly cutter head rotates, the X-axis of the CNC machine tool moves back and forth to bring the fly cutter head into contact with the machining surface of the multi-faceted rotating mirror, thus achieving comprehensive machining of the surface. After one machining surface is completed, the mounting bracket is rotated along the B-axis of the CNC machine tool to move to the next machining surface for machining, until all machining surfaces are completed. This rapidly completes the fly cutter machining process for the multi-faceted rotating mirror, thus solving the technical problem of long machining cycles caused by the current four-axis (X, Z, Y, C) simultaneous scraping machining method used for ultra-precision machining of multi-faceted rotating mirrors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a first exploded view of the present invention;

[0018] Figure 3 This is a second exploded view of the present invention;

[0019] Figure 4 This is a schematic diagram of the flying knife disc structure of this utility model;

[0020] Figure 5 This is a schematic diagram showing the contact between the fly cutter disc and the machining surface of this utility model.

[0021] In the diagram, 1. Multi-faceted rotating mirror; 2. Flying knife disc; 3. Placement slot; 4. Fixing block; 5. Limiting slot; 6. First through hole; 7. Threaded hole; 8. Counterweight hole; 9. Fixing disc; 10. First fixing hole; 11. Second fixing hole; 12. Through-hole cylinder; 13. Third fixing hole; 14. Spindle. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0023] See Figures 1 to 5 This utility model provides a high-precision flying knife machining device for multi-faceted rotating mirrors. Based on a CNC machine tool, a fixed seat is provided on the B-axis worktable of the CNC machine tool, and a multi-faceted rotating mirror 1 is provided on the top of the fixed seat. The B-axis worktable is fixedly connected to the Z-axis of the CNC machine tool. A spindle 14 is provided vertically in the X-axis direction of the CNC machine tool. A flying knife disk 2 is connected to the spindle 14. A machining tool is built into the wall of the flying knife disk 2. The other side of the flying knife disk 2 is opposite to the multi-faceted rotating mirror 1, and the machining tool is in contact with any side of the multi-faceted rotating mirror 1.

[0024] It should be noted that the CNC machine tool can be a three-axis linkage device. The B-axis controls the rotation of the fixed base center, and can also drive the left and right B-axis movement via the Z-axis. The X-axis drives the spindle 14, which in turn drives the fly cutter head 2 to rotate. During rotation, the X-axis moves the machining tool back and forth, bringing it into contact with the machining surface of the multi-faceted rotating mirror 1, thus achieving comprehensive machining of the surface (e.g., ...). Figure 5 (As shown).

[0025] The fly cutter head 2 has multiple connection holes and is connected to the spindle 14 with screws. This allows the spindle 14 to stably drive the fly cutter head 2 to rotate.

[0026] Specifically, after the multi-faceted rotating mirror 1 is stably installed using a mounting base, the bottom of the mounting base is fixed to the B-axis worktable of the CNC machine tool. A spindle 14 is fixed on the X-axis of the CNC machine tool, and the spindle 14 drives the fly cutter disc 2 to rotate. During rotation, the fly cutter disc 2 aligns its fixed machining tool with any face of the multi-faceted rotating mirror 1 and performs fly cutter machining. While the fly cutter disc 2 rotates, the X-axis of the CNC machine tool moves back and forth, bringing the fly cutter disc 2 into contact with the machining surface of the multi-faceted rotating mirror 1, thus achieving comprehensive machining of the machining surface. After one machining surface is completed, the mounting base is rotated along the B-axis of the CNC machine tool to the next machining surface for machining, until all machining surfaces are machined. This quickly completes the fly cutter machining process for the multi-faceted rotating mirror 1, thus solving the technical problem of long machining cycles caused by the current four-axis (X, Z, Y, C) simultaneous scraping machining method used for the ultra-precision machining of the multi-faceted rotating mirror 1.

[0027] Preferably, the outer circumferential surface of the fly cutter disc 2 is provided with a placement groove 3 along its radial direction, and the placement groove 3 contains a machining tool.

[0028] In this embodiment, the placement slot 3 is as follows: Figure 4 As shown. The tool for machining the surface is stably placed in the placement slot 3, so that the machining tool works stably during operation.

[0029] Furthermore, the processing tool includes a cutting tool and a fixing block 4. The bottom of the placement groove 3 is provided with a limiting groove 5, which is used to place the cutting tool. The placement groove 3 is adapted to contact the fixing block 4. The fixing block 4 is provided with a first through hole 6, and the placement groove 3 is provided with a threaded hole 7. A screw is passed through the first through hole 6 and connected to the threaded hole 7 to fix the fixing block 4 in the placement groove 3.

[0030] In this embodiment, a limiting groove 5 is provided at the bottom of the limiting groove 5 for placing a cutting tool, which can be a diamond cutting tool. After the cutting tool is placed stably, the fixing block 4 is placed into the limiting groove 5. When the fixing block 4 is placed stably, its bottom surface contacts the top surface of the cutting tool, forming a mutual abutting force. Then, the screw is passed through the first through hole 6 and threaded into the threaded hole 7. By tightening the screw, the fixing block 4 is fixed in the placement groove 3, and at the same time, the fixing block 4 presses the cutting tool and fixes it in the limiting groove 5, ensuring that the cutting tool works stably during the high-speed rotation of the flying cutter disc 2.

[0031] Furthermore, the two sides of the fly cutter disc are provided with multiple counterweight holes 8 axially facing the center, and the counterweight holes 8 are used to connect counterweight screws.

[0032] In this embodiment, a counterweight hole 8 for adjusting dynamic balance is provided on the side wall of the fly cutter disc 2. The dynamic balance of the whole is adjusted by the counterweight screw, so that the center of gravity of the fly cutter disc 2, the cutter and the fixing block 4 can be the same as the center of gravity of the spindle 14 after installation, thus ensuring the stable rotation of the fly cutter disc 2.

[0033] Preferably, the fixing base includes a fixing plate 9, the fixing plate 9 is provided with a first fixing hole 10, and a screw is passed through the first fixing hole 10 to fix the fixing plate 9 on the B-axis worktable. The fixing plate 9 is also provided with a second fixing hole 11, and a through-hole cylinder 12 is provided on the top surface of the second fixing hole 11 and connected to its bottom surface. A multi-faceted rotating mirror 1 is connected to the top of the through-hole cylinder 12.

[0034] In this embodiment, after the multi-faceted rotating mirror 1 is stably connected to the through-hole cylinder 12, the fixing plate 9 is stably connected to the through-hole cylinder 12 by passing screws through the second fixing hole 11. Then, screws are passed through the first fixing hole 10 to fix the fixing plate 9 on the B-axis worktable, which facilitates the subsequent rotation of the fixing plate 9 by the B-axis worktable.

[0035] Furthermore, the multi-faceted rotating mirror 1 has multiple third fixing holes 14 in the middle, and screws are used to connect it to the top surface of the through-hole cylinder 12 through the third fixing holes 14.

[0036] It should be noted that the support plate in the middle of the multi-faceted rotating mirror 1 is provided with a protruding post, which is used to embed into the through hole of the through-hole cylinder 12 to play a role in balance and stability.

[0037] In this embodiment, a screw is passed through the third fixing hole 13 to stably connect the multifaceted rotating mirror 1 to the through-hole cylinder 12 in the middle. When the through-hole cylinder 12 is stably connected to the fixing disk 9, the B-axis worktable rotates the fixing disk 9 and drives the multifaceted rotating mirror 1 to rotate, thereby allowing the multifaceted rotating mirror 1 to be processed one by one on each of its multiple processing surfaces.

[0038] The working principle of this utility model is as follows: The fly cutter disc 2 is fixed to the spindle 14 with screws. A multi-degree-of-freedom dial indicator is used to adjust the position of the fly cutter disc 2 and confirm that it is concentric with the spindle 14. A fixing block 4 is fixed to the fly cutter disc 2 with screws. The diamond tool is clamped in the limiting groove 5 of the fly cutter disc 2 using the fixing block 4. The counterweight screw in the counterweight hole 8 on the fly cutter disc 2 is adjusted to achieve overall dynamic balance. Next, the multi-faceted rotating mirror 1 is installed on the top surface of the through-hole cylinder 12, and the through-hole cylinder 12 is fixed to the fixing plate 9, which is then fixed to the B-axis worktable. The position of the multi-faceted rotating mirror 1 is adjusted, and a multi-degree-of-freedom dial indicator is used to confirm that the first surface to be machined is parallel to the spindle 14. The rotation of the spindle 14 drives the diamond tool mounted on the fly cutter disc 2 to rotate. Combined with the forward and backward movement of the X-axis, the surface of the multi-faceted rotating mirror 1 can be machined. After the first surface is machined, rotate the B-axis to rotate the multifaceted mirror 1 to the second surface to be machined. After all the reflective surfaces of the multifaceted mirror 1 are machined, replace it with the next workpiece.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision flying knife machining device for multi-faceted rotating mirrors, based on a CNC machine tool, characterized in that, The CNC machine tool has a fixed base on the B-axis worktable, and a multi-faceted rotating mirror on the top of the fixed base. The B-axis worktable is fixedly connected to the Z-axis of the CNC machine tool. The CNC machine tool has a spindle in the vertical direction of the X-axis, and the spindle is connected to a fly cutter head. A machining tool is built into the body wall of the fly cutter head. The other side of the fly cutter head is opposite to the multi-faceted rotating mirror, and the machining tool is in contact with any side of the multi-faceted rotating mirror.

2. The high-precision flying knife machining device for multi-faceted rotating mirrors according to claim 1, characterized in that, The outer circumferential surface of the fly cutter disc is provided with a placement groove along its radial direction, and the processing tool is placed inside the placement groove.

3. The high-precision flying knife machining device for multi-faceted rotating mirrors according to claim 2, characterized in that, The processing tool includes a cutting tool and a fixing block. The bottom of the placement groove is provided with a limiting groove for placing the cutting tool. The placement groove is adapted to contact the fixing block. The fixing block is provided with a first through hole, and the placement groove is provided with a threaded hole. A screw is passed through the first through hole and connected to the threaded hole to fix the fixing block in the placement groove.

4. The high-precision flying knife machining device for multi-faceted rotating mirrors according to claim 2, characterized in that, The fly cutter disc has multiple counterweight holes on its circumferential side facing the center axis, and the counterweight holes are used to connect counterweight screws.

5. A high-precision flying knife machining device for multi-faceted rotating mirrors according to claim 1, characterized in that, The mounting base includes a mounting plate with a first mounting hole. A screw is inserted through the first mounting hole to fix the mounting plate to the B-axis worktable. The mounting plate also has a second mounting hole. A through-hole cylinder is provided on the top surface of the second mounting hole and connected to its bottom surface. The multi-faceted rotating mirror is connected to the top of the through-hole cylinder.

6. A high-precision flying knife machining device for multi-faceted rotating mirrors according to claim 5, characterized in that, The multifaceted rotating mirror has multiple third fixing holes in its inner center, and screws are used to connect it to the top surface of the through-hole cylinder through the third fixing holes.

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