A cover milling machine

Abstract

The utility model provides a cover shell milling machine relates to machining technical field, including frame, be provided with drive arrangement and height positioning column on the frame, rotatable setting has the tool bit on the height positioning column, a plurality of blades are connected with the tool bit, the frame includes workstation panel, the cutting surface of blade is lower than the upper surface of workstation panel, the height positioning column still can lift and down setting has the center positioning column, the lower pressure device is arranged above the center positioning column. The utility model has the advantages that, through setting up the center positioning column of lift and down and independent lower pressure device combination, the stable feeding of cover shell work piece in the processing process is realized, and the cutting plane formed by the cutting edge of blade is lower than the upper surface of workstation panel, namely, the processing process will not be in the exposed state, is not easy to have accidental contact with the operator, tool and so on, has the advantages such as high security, reasonable structure, high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to a casing milling machine. Background Technology

[0002] Milling machines, as an important type of flat surface processing equipment for metal and non-metal materials, are widely used in fields such as machinery manufacturing, mold processing, and pre-treatment of building components. The main function of milling machines is to mill the surface of workpieces with high-speed rotating milling cutters to obtain a flat surface or specific shape with high precision and high smoothness.

[0003] In the prior art, Chinese Patent Publication No. CN210188610U discloses a CNC milling machine, which mainly includes a machine housing, a support frame, a worktable, a scanning sensor, a milling spindle, and milling cutters. Its main technical feature is the disclosure of a collaborative system composed of mechanical parts, electrical control parts, and a workpiece clamping part. During operation, the scanning sensor detects the workpiece, and the control system precisely drives the milling spindle to move, thereby achieving one-time precise milling of the workpiece. Compared with traditional manual or semi-automatic equipment, this solution can effectively improve the yield rate of one-time processing, reduce the workload of subsequent manual grinding and finishing, not only helping to reduce overall production costs, but also reducing dust pollution to a certain extent due to the reduction of grinding steps, making it more environmentally friendly, while improving the stability and controllability of the processing.

[0004] However, the aforementioned existing technical solutions still have certain technical drawbacks: the milling cutter is directly exposed. Although this design is relatively simple and straightforward in structure, in actual production environments, especially during equipment debugging, workpiece loading and unloading, close observation, or maintenance, the high-speed rotating and exposed cutter is highly susceptible to accidental contact with operators and tools, posing serious risks of personal injury and accidental damage to the cutter. Therefore, disclosing a novel casing milling machine to effectively solve the safety hazards caused by exposed milling cutters has become an urgent technical problem to be addressed in this field. Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a casing milling machine with the advantages of high safety, reasonable structure and high degree of automation.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A casing milling machine includes a frame, on which a drive device and a height positioning column are mounted; A cutter head is rotatably mounted on the height positioning column, and the cutter head is connected to several blades; The frame includes a worktable panel, and the cutting surface of the blade is lower than the upper surface of the worktable panel; The height positioning column can also be equipped with a central positioning column that can be raised and lowered, and a pressing device is provided above the central positioning column; The driving device is connected to the cutting head and drives it to rotate. The pressing device is used to press the cover against the central positioning post, causing the central positioning post to descend, thereby allowing the blade to mill and cut the bottom end of the cover.

[0007] Furthermore, the drive device includes a geared motor, a first pulley connected to the geared motor, and a second pulley coaxially connected to the cutter head. The first pulley and the second pulley are connected by a synchronous belt drive, and the second pulley is located below the cutter head.

[0008] Furthermore, a first positioning pin for limiting the position of the cover is provided above the central positioning post. The height positioning column has a cavity, and a spring is installed in the cavity to push the central positioning column upward. The chamber is provided with guide grooves on both sides, and a second positioning pin is provided below the central positioning column. The second positioning pin is slidably disposed in the guide groove to guide the central positioning column to rise and fall stably. After the milling and cutting are completed, the pressing device rises, and the spring lifts the central positioning column to raise the cover.

[0009] Furthermore, the blades are detachably attached to the cutting head by fasteners and are distributed around the cutting head.

[0010] Furthermore, the frame also includes a bearing housing, in which a bearing is disposed, and the cutter head is mounted in the bearing; The frame also includes a base plate, and the bearing seat is disposed on the base plate; The base plate is provided with support columns, and the workbench panel is connected to the support columns.

[0011] Furthermore, the workbench panel is provided with a mounting base, and the mounting base is provided with a vertical pole; The pressing device includes a cylinder seat and a cylinder mounted on the cylinder seat, wherein the piston rod of the cylinder is vertically downward and corresponds to the central positioning post.

[0012] Furthermore, the upright is detachably connected to the mounting base and secured by a first positioning screw; The cylinder seat is slidably connected to the upright and fixed by a second positioning screw.

[0013] Furthermore, the first positioning pin is detachably inserted laterally into the central positioning post, and the central positioning post has a threaded hole in the middle. The central positioning post can be pressed and fixed by screwing a screw into the threaded hole.

[0014] Furthermore, the cutting head is provided with a mounting surface for mounting the blade, the mounting surface being perpendicular to the rotation plane of the cutting head; the upper end of the blade protrudes from the surface of the cutting head.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The casing milling machine provided by this utility model achieves stable feeding of the casing workpiece during processing by combining a liftable central positioning column with an independent pressing device. Furthermore, the cutting plane formed by the cutting edge of the blade is lower than the upper surface of the worktable panel, ensuring it is not exposed during processing and reducing the risk of accidental contact with operators or tools. The built-in spring return and guide groove mechanism of the central positioning column ensures smooth and precise lifting movements and automatically ejects the finished workpiece, improving operational safety. It boasts advantages such as a reasonable structure and a high degree of automation. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of the casing, showing that the bottom surface of the casing needs to be milled flat. Figure 2 It is a 3D view of a casing milling machine; Figure 3 This is a side view of a casing milling machine; Figure 4 This is a side view of the internal structure of the casing milling machine; Figure 5 This is a schematic diagram showing the connection between the cutter head and the bearing; Figure 6 yes Figure 5 A magnified view of circle A in the middle; Figure 7 This is a schematic diagram showing the cutter head and blade separated. Figure 8 This is a structural diagram of the height positioning post and the center positioning post; Figure 9 This is a cross-sectional view of the height positioning post and the center positioning post.

[0017] In the diagram: 1. Frame; 2. Drive unit; 201. Gear motor; 202. First pulley; 203. Second pulley; 204. Synchronous belt; 3. Height positioning pin; 301. Chamber; 302. Guide groove; 4. Cutting head; 401. Mounting surface; 5. Blade; 6. Workbench panel; 7. Center positioning pin; 701. Threaded hole; 8. Pressing device; 801. Cylinder seat; 802. Cylinder; 9. First positioning pin; 10. Spring; 11. Second positioning pin; 12. Bearing seat; 13. Bearing; 14. Base plate; 15. Support column; 16. Mounting base; 17. Vertical rod; 18. First positioning screw; 19. Second positioning screw; 20. Screw. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] like Figures 2 to 9 As shown, this utility model provides a casing milling machine for milling the bottom of a casing to achieve a flat surface. The machine includes a frame 1, which includes a horizontally positioned worktable panel 6. A height positioning post 3 is located in the center of the worktable panel 6, and a cutter head 4 is rotatably mounted on the height positioning post 3. Several blades 5 are evenly distributed and fixed along the circumference of the cutter head 4. The cutting plane formed by the cutting edges of all the blades 5 is lower than the upper surface of the worktable panel 6, ensuring that they are not exposed during processing and preventing accidental contact with operators or tools. Inside the height positioning post 3, a central positioning post 7 is coaxially and vertically movable, with its upper end supporting the casing workpiece to be processed. A pressing device 8 mounted on the frame 1 is located directly above the central positioning post 7. A drive device 2 is mounted on the frame 1 and connected to the cutter head 4 via a transmission mechanism, providing rotational cutting power to the cutter head 4.

[0020] In this embodiment, the drive device 2 includes a geared motor 201. A first pulley 202 is fixedly mounted on the output shaft of the geared motor 201, and a second pulley 203 is coaxially fixedly connected to the lower end of the cutter head 4. The first pulley 202 and the second pulley 203 are connected by a synchronous belt 204. The second pulley 203 is located below the cutter head 4, resulting in a compact layout. When the geared motor 201 starts, power is transmitted through the synchronous belt 204, driving the cutter head 4 and its blades 5 to rotate at high speed.

[0021] A first positioning pin 9 is horizontally inserted into the upper part of the central positioning post 7, such as... Figure 1The diagram shows the structure of the cover from the bottom. The bottom of the cover is open and has a groove. When the cover workpiece is fitted onto the central positioning post 7 from top to bottom, the first positioning pin 9 can be inserted into the corresponding groove on the inner wall of the cover workpiece to achieve circumferential limiting of the cover workpiece and prevent it from rotating during processing. A vertical chamber 301 is machined inside the height positioning post 3. A spring 10 is installed at the bottom of the chamber 301, and the upper end of the spring 10 always presses against the bottom of the central positioning post 7, thus providing a constant upward restoring force to the central positioning post 7. To ensure that the central positioning post 7 does not deflect or jam during lifting, vertical guide grooves 302 are symmetrically provided on the inner walls of both sides of the chamber 301. A second positioning pin 11 is fixedly installed at the lower part of the central positioning post 7, with both ends of the second positioning pin 11 extending into the guide grooves 302 on both sides. In this way, the central positioning column 7 can only make vertical lifting and lowering movements along the guide groove 302 under the push of the spring 10 and the guidance of the second positioning pin 11, which has good stability.

[0022] After processing is completed, the pressing device 8 is lifted, and under the action of the spring 10, the central positioning column 7 will drive the milled cover workpiece to rise and reset automatically, making it convenient for the operator to pick up the workpiece.

[0023] The blade 5 is detachably mounted on the cutter head 4 using fasteners such as bolts. Several blades 5 are evenly distributed around the axis of the cutter head 4, forming a complete circular cutting edge. This detachable design allows the blades 5 to be quickly and individually replaced after wear, resulting in good economy and convenient maintenance.

[0024] Each blade 5 on the cutter head 4 has a radial mounting surface 401, which is perpendicular to the rotation plane of the cutter head 4. The blade 5 is attached to and fastened to the mounting surface 401, so that the main force direction during cutting is perpendicular to the mounting surface 401, resulting in good force distribution and stable installation. After installation, the upper end of the cutting part of the blade 5 will protrude appropriately from the upper surface of the cutter head 4 body to ensure effective cutting depth.

[0025] The frame 1 consists of a base plate 14, on which a bearing seat 12 is bolted and mounted. A bearing 13 is fitted inside the bearing seat 12, and the cutter head 4 is mounted in the bearing 13, thus enabling rotation. At the four corners of the base plate 14, multiple support columns 15 are vertically fixed. The worktable panel 6 is horizontally bolted to the tops of these support columns 15, parallel to the base plate 14 and maintaining a certain distance to allow space for internal transmission components.

[0026] The pressing device 8 provides the force to press down the cover during processing, causing the bottom of the cover to descend and contact the blade 5 to complete the milling and cutting work. A mounting base 16 is fixed to one side of the worktable panel 6. A vertical rod 17 is mounted on the mounting base 16. A cylinder seat 801 is slidably fitted onto the vertical rod 17 via a sleeve. A cylinder 802 is fixedly mounted on the cylinder seat 801, with its piston rod extending vertically downwards. The end of the cylinder 802 is aligned with the center positioning post 7 below. To accommodate workpieces of different heights, the vertical rod 17 and the mounting base 16 are detachably connected, and the vertical rod 17 is locked in place by tightening the first positioning screw 18 on the side of the mounting base 16. Similarly, the height of the cylinder seat 801 on the vertical rod 17 is adjustable. After adjustment, it is securely locked onto the vertical rod 17 by tightening the second positioning screw 19 on the cylinder seat 801. This design provides good adjustability for both the overall height and pressure point position of the pressing device 8.

[0027] Furthermore, the first locating pin 9 is inserted laterally into the central locating post 7, and the central locating post 7 has an axial threaded hole 701 in the middle. The above design also makes the first locating pin 9 replaceable. By unscrewing the screw 20, the first locating pin 9 can be pulled out laterally. After the first locating pin 9 is replaced and reinserted, the screw 20 is screwed down from the threaded hole 701, so that the lower end of the screw 20 presses against the first locating pin 9, and the first locating pin 9 is firmly fixed and locked in the pin hole of the central locating post 7.

[0028] In operation, the operator first places the workpiece to be processed onto the central positioning post 7 and positions it using the first positioning pin 9. The drive device 2 is then activated, causing the cutter head 4 and the blade 5 to rotate. Next, the cylinder 802 of the pressing device 8 is activated, causing the piston rod to move downwards, pressing down on the top of the workpiece and overcoming the spring force of the spring 10, pushing the workpiece and the central positioning post 7 to descend smoothly together. As the workpiece descends, its bottom end contacts the high-speed rotating blade 5, thus being milled flat. When the workpiece descends to the preset depth, the milling process is complete. Subsequently, the piston rod of the cylinder 802 retracts, releasing the downward pressure. Under the restoring force of the spring 10, the central positioning post 7 lifts the processed workpiece back to its initial position, allowing the operator to easily remove the finished product.

[0029] The casing milling machine provided by this utility model, through the combination of a liftable central positioning column 7 and an independent pressing device 8, achieves stable feeding of the casing workpiece during processing. Furthermore, the cutting plane formed by the cutting edge of the blade 5 is lower than the upper surface of the worktable panel 6, ensuring it is not exposed during processing and reducing the risk of accidental contact with operators or tools. The spring 10 reset mechanism and guide groove 302 built into the central positioning column 7 ensure smooth and precise lifting movements and automatically eject the finished workpiece, improving operational safety. It boasts advantages such as a reasonable structure and a high degree of automation.

[0030] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, 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 casing milling machine, characterized in that, Includes a frame, on which a drive device and a height positioning column are provided; A cutter head is rotatably mounted on the height positioning column, and the cutter head is connected to several blades; The frame includes a worktable panel, and the cutting surface of the blade is lower than the upper surface of the worktable panel; The height positioning column can also be equipped with a central positioning column that can be raised and lowered, and a pressing device is provided above the central positioning column; The driving device is connected to the cutting head and drives it to rotate. The pressing device is used to press the cover against the central positioning post, causing the central positioning post to descend, thereby allowing the blade to mill and cut the bottom end of the cover.

2. The casing milling machine according to claim 1, characterized in that, The drive device includes a geared motor, a first pulley connected to the geared motor, and a second pulley coaxially connected to the cutter head. The first pulley and the second pulley are connected by a synchronous belt drive, and the second pulley is located below the cutter head.

3. The casing milling machine according to claim 1, characterized in that, A first positioning pin for limiting the position of the cover is provided above the central positioning post. The height positioning column has a cavity, and a spring is installed in the cavity to push the central positioning column upward. The chamber is provided with guide grooves on both sides, and a second positioning pin is provided below the central positioning column. The second positioning pin is slidably disposed in the guide groove to guide the central positioning column to rise and fall stably. After the milling and cutting are completed, the pressing device rises, and the spring lifts the central positioning column to raise the cover.

4. The casing milling machine according to claim 1, characterized in that, The blades are detachably attached to the cutting head by fasteners and are distributed around the cutting head.

5. The casing milling machine according to claim 1, characterized in that, The frame also includes a bearing housing, in which a bearing is disposed, and the cutter head is mounted in the bearing; The frame also includes a base plate, and the bearing seat is disposed on the base plate; The base plate is provided with support columns, and the workbench panel is connected to the support columns.

6. The casing milling machine according to claim 1, characterized in that, The workbench panel is provided with a mounting base, and the mounting base is provided with a vertical pole; The pressing device includes a cylinder seat and a cylinder mounted on the cylinder seat, wherein the piston rod of the cylinder is vertically downward and corresponds to the central positioning post.

7. The casing milling machine according to claim 6, characterized in that, The upright is detachably connected to the mounting base and fixed by the first positioning screw; The cylinder seat is slidably connected to the upright and fixed by a second positioning screw.

8. The casing milling machine according to claim 3, characterized in that, The first positioning pin is detachably inserted laterally into the central positioning post. The central positioning post has a threaded hole in the middle. The central positioning post can be pressed and fixed by screwing a screw into the threaded hole.

9. The casing milling machine according to claim 1, characterized in that, The cutting head is provided with a mounting surface for mounting the blade, the mounting surface is perpendicular to the rotation plane of the cutting head, and the upper end of the blade protrudes from the surface of the cutting head.

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