A device for improving the machining accuracy of a surface milling machine.

Abstract

This utility model discloses a device for improving the machining accuracy of a surface milling machine. It includes a milling machine work platform with a cast iron disc surface. Magnetic strips are embedded within the cast iron disc of the work platform. Multiple glass blocks are fixed to the surface of the work platform, and multiple stop blocks are also provided on the work platform surface. When the machining accuracy decreases due to wear on the milling machine work table surface, this utility model eliminates the need to repair the high-hardness work platform itself. Only the glass blocks attached to the work platform need to be milled using milling tools. This provides stable machining accuracy for the milling machine, effectively extends its service life, simplifies the machining process, and improves product processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of planar milling technology. Specifically, it is a device used to improve the parallelism and surface accuracy of a milled mirror disk during the planar milling process. It is applicable to various production scenarios that rely on planar milling machines for mirror disk processing, such as optical component manufacturing and precision mechanical parts processing. Background Technology

[0002] In current planar milling processes, the machining of mirror disks typically employs traditional clamping and table structures. (See Figure 1 and...) Figure 2 (Diagram of existing technology product processing) As shown, the bottom surface of the mirror disk 6 is attached to the work platform 1. The mirror disk 6 is fixed around the perimeter by the magnetic strip 2 through the attraction of the guard iron 5, so as to prevent the mirror disk 6 from sliding during the processing. Then the grinding wheel 3 grinds the workpiece 4 (glass) on the mirror disk 6. Conventional milling tables have a cast iron disc with a magnetic strip embedded within it. This magnetic strip generates electromagnetic attraction, holding iron fixtures to the table surface for secure fixation. However, this traditional method has significant drawbacks: as the number of products processed increases, the table surface gradually wears down due to continuous contact and friction with the workpieces and fixtures. This wear directly leads to a gradual decrease in overall machining accuracy. Once the accuracy drops to a certain level, the table must be repaired. However, because the table is made of cast iron, which has high hardness, repairing it is extremely difficult, requiring significant time and labor costs. Furthermore, frequent repairs negatively impact the table's lifespan, potentially causing premature failure and increasing production costs for the company. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing planar milling and grinding technology, such as easy wear of the worktable, difficulty in maintenance, short service life, and unstable machining accuracy. It provides a device to improve the machining accuracy of planar milling and grinding machines. This device can provide stable machining accuracy for the milling and grinding machine, effectively extend the service life of the milling and grinding machine, and at the same time simplify the processing flow and improve product processing efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A device for improving the machining accuracy of a surface milling machine includes a milling machine work platform with a cast iron disc surface, a magnetic strip embedded in the cast iron disc of the milling machine work platform, multiple glass blocks fixed on the surface of the milling machine work platform, and multiple stop blocks also provided on the surface of the milling machine work platform.

[0005] The glass block is fixed to the work platform of the milling machine using AB glue.

[0006] The arrangement of the glass blocks is designed according to the shape and size of the processing mirror plate fixture.

[0007] The present invention adopts the above technical solution, and its beneficial effects are as follows: 1. Ensures machining accuracy and extends equipment life. This utility model, by setting a millable glass block on the work platform, allows for the restoration of accuracy simply by milling the glass block when machining accuracy decreases. This avoids the need to repair the hard worktable body, greatly reducing repair difficulty and damage to the worktable, effectively extending the service life of the milling machine. Simultaneously, it allows for real-time calibration of the milling machine's working accuracy, ensuring that the milling equipment maintains stable dimensional accuracy over the long term. 2. Reduced machining errors. With the device of this invention, the contact between the worktable and the mirror disk changes from surface contact to point contact between the glass block and the mirror disk. This contact method significantly reduces machining dimensional errors caused by unclean worktable surfaces (such as residual iron filings, dust, etc.) and unclean mirror disk surfaces (such as residual oil stains, impurities, etc.), improving the parallelism and surface accuracy of the machined mirror disk. 3. Improve processing efficiency and simplify the processing flow. With stable equipment precision, precise control of the mirror disc surface shape can be achieved by accurately adjusting the tilt of the worktable. Combined with milling using a suitable grinding wheel, the milled mirror disc can directly enter the polishing process, eliminating the fine grinding step in traditional processing. This significantly shortens the product processing cycle, improves processing efficiency, and reduces production costs for enterprises. Attached Figure Description

[0008] Figure 1 This is a schematic diagram showing the structure of the improved milling and grinding machine working platform of this utility model; Figure 2 This is a schematic diagram showing the structure of the improved front mirror plate clamping of this utility model; Figure 3 This is a schematic diagram showing the structure of the milling machine working platform of this utility model.

[0009] In the diagram: 1-cast iron workbench, 2-magnetic strip, 3-grinding wheel, 4-workpiece, 5-stop, 6-mirror plate, 7-glass block. Detailed Implementation

[0010] The following description, in conjunction with the accompanying drawings, details a device for improving the machining accuracy of a surface milling machine according to this utility model.

[0011] This utility model relates to a device for improving the machining accuracy of a surface milling machine, see [link to relevant documentation]. Figure 3The milling machine includes a milling machine work platform 1 with a cast iron disc surface. Magnetic strips 2 are embedded within the cast iron disc of the work platform 1. Multiple glass blocks 7 are fixed to the surface of the work platform 1 using AB glue (such as epoxy resin AB glue), ensuring complete curing of the AB glue and a tight fit between the glass blocks 7 and the work surface without any loosening. The arrangement of the glass blocks 7 is designed according to the shape and size of the mirror disc fixture. For example, when the mirror disc 6 is circular, the glass blocks 7 can be arranged in a ring; when the mirror disc 6 is square, the glass blocks 7 can be arranged in a rectangular array. Multiple stop blocks 5 are also provided on the work platform 1. The stop blocks 5 are made of iron and can generate electromagnetic attraction with the magnetic strips 2 embedded within the work platform 1.

[0012] The clamping process of this utility model mirror disk is as follows: First, place the mirror disk 6 to be processed into the area of ​​the pre-attached glass block. Slowly push the mirror disk 6 by hand to ensure that the bottom surface of the mirror disk 6 is in full contact with the upper surface of the glass block 7, ensuring that the mirror disk 6 is placed stably. Then, place the stop blocks 5 around the mirror disk 6. Activate the electromagnetic adsorption function of the milling machine to generate electromagnetic adsorption force on the magnetic strip 2. Through the electromagnetic adsorption force generated by the magnetic strip 2 inside the milling machine's working platform 1, the stop blocks 5 are firmly adsorbed onto the working platform. Finally, gently tap the stop blocks 5 with a rubber hammer to make the inner side of the stop blocks 5 tightly close to the edge of the mirror disk 6, thereby achieving the effect of firmly fixing the mirror disk 6 and preventing the mirror disk 6 from shifting during the milling process. The tapping force should be moderate to avoid damaging the mirror disk 6 or the glass block 7 due to excessive force. The clamping of the mirror disk 6 is then complete. After the mirror disk 6 is clamped, the grinding wheel 3 grinds and polishes the workpiece 4 (glass) on the mirror disk 6.

[0013] The workbench repair process of this utility model is as follows: After long-term use, if the parallelism of the mirror plate 6 is found to be incorrect by using a precision testing instrument (such as a dial indicator), the workbench needs to be repaired. Turn off the electromagnetic adsorption function of the milling machine, remove the fixing block 5 and any remaining workpieces. Start the milling function of the milling machine, select a suitable diamond grinding wheel, and adjust the grinding wheel speed and feed rate to mill the glass block 7 on the workbench. During the milling process, the CNC system of the milling machine controls the grinding wheel to move along a preset trajectory, ensuring that the upper surface of all glass blocks 7 is milled evenly. The milling depth is determined according to the accuracy error. After milling is completed, turn off the milling machine, clean the debris from the workbench and the glass block surface with cleaning tools, and check the parallelism between the workbench surface and the grinding wheel processing surface again using a dial indicator to ensure that the parallelism error is controlled within a suitable range. The repair work is complete, and the equipment can be put back into production.

[0014] When this invention leads to a decrease in machining accuracy, there is no need to adjust the milling machine's work platform itself, which has a high hardness. Instead, the glass block adhered to the work platform can be milled using a milling tool. Milling the glass block quickly restores the parallelism between the worktable and the grinding wheel's surface. The adjustment process is simple and easy, and adjustments can be made at any time based on changes in post-processing accuracy, without disassembling the worktable or halting production for an extended period.

Claims

1. A device for improving the machining accuracy of a surface milling machine, comprising a milling machine work platform with a cast iron disc surface, characterized in that... The milling machine's working platform has a cast iron disc inlaid with a magnetic strip, and multiple glass blocks are fixed on the surface of the milling machine's working platform. Multiple stop blocks are also set on the surface of the milling machine's working platform.

2. The device for improving the machining accuracy of a surface milling machine according to claim 1, characterized in that: The glass block is fixed to the work platform of the milling machine using AB glue.

3. The device for improving the machining accuracy of a surface milling machine according to claim 1, characterized in that: The arrangement of the glass blocks is designed according to the shape and size of the processing mirror plate fixture.

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