A milling machine

Abstract

A milling machine includes a base, a rotary table, a gantry frame, a column, and a spindle box. The rotary table is mounted on the base, and a support block for the product to be processed is provided at the center of the rotary table. The top view projection of the support block is within the top view projection of the product to be processed. The height of the support block is configured to avoid interference between the spindle box and the rotary table. The gantry frame includes a gantry frame and a pressing device. The gantry frame is mounted on the base, and the pressing device is mounted on the gantry frame. The pressing device has a telescopic rod that can extend and retract vertically, and the bottom end of the telescopic rod is used to press the top surface of the product to be processed. The column is slidably connected to the base, and the spindle box is slidably connected to the column. Compared with the prior art, the milling machine of this invention can process multiple sides of a product without removing the product, simplifying the processing steps and improving processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of milling machine technology, and specifically relates to a milling machine. Background Technology

[0002] For existing milling machines as provided in authorization announcement number CN208744271U, in order to avoid interference between the spindle box, milling cutter head and the worktable, after the product to be processed is placed on the worktable, the side of the product to be processed opposite to the milling cutter head needs to be set on the outside of the worktable.

[0003] However, for products with a horizontal cross-sectional dimension smaller than the worktable size that require milling on all four sides (front, back, left, and right), after machining one side, the product needs to be released from its fixation and then adjusted so that the next side to be machined faces the spindle; alternatively, four machines can be used, each machining one side, in a production line to process all four sides of the product. Regardless of the method used, after machining each side, the product needs to be removed, repositioned, and re-fixed. This is not only cumbersome and reduces processing efficiency, but also requires repositioning the product after each side machining. The accumulated errors from these multiple repositioning processes reduce machining accuracy and quality. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a milling machine.

[0005] To achieve the above objectives, this utility model discloses a milling machine, including a base, a rotary table, a gantry frame, a column, and a spindle box;

[0006] The turntable is mounted on the base, and a pad for supporting the product to be processed is provided in the middle of the turntable. The top view projection of the pad is within the top view projection of the product to be processed. The height of the pad is configured to avoid interference between the spindle box and the turntable.

[0007] The gantry fixing frame includes a gantry frame and a pressing device. The gantry frame is mounted on the base, and the pressing device is installed on the gantry frame. The pressing device has a telescopic rod that can extend and retract vertically. The bottom end of the telescopic rod is used to press the top surface of the product to be processed.

[0008] The column is slidably connected to the base from front to back, and the spindle box is slidably connected to the column from top to bottom.

[0009] Furthermore, the pad is detachably connected to the turntable.

[0010] Furthermore, the pad is elongated, and there are multiple pads arranged at intervals.

[0011] Furthermore, a mounting base is provided outside the spindle box, the spindle is slidably connected to the mounting base in the front and back, and the mounting base is slidably connected to the column in the back and forth.

[0012] Furthermore, the mounting base is L-shaped.

[0013] Furthermore, the mounting base is provided with a limiting part, which is located at the top of the mounting base and away from the column. The limiting part is 7-shaped, and a limiting groove is formed between the limiting part and the mounting base.

[0014] Furthermore, the top of the mounting base extends horizontally outward to form a connecting ear, and the connecting ear is connected to a downwardly extending limiting plate, the limiting plate and the connecting ear forming the limiting part.

[0015] The top of the spindle box is provided with a protrusion that is engaged in the limiting groove.

[0016] Furthermore, the mounting base is provided with a first motor and a first lead screw connected to the first motor, and the bottom of the spindle box is provided with a first threaded sleeve, which is driven by the first lead screw.

[0017] Furthermore, the column is equipped with a second motor and a second lead screw connected to the second motor, and the mounting base is equipped with a second threaded sleeve on the side near the column, and the second threaded sleeve is driven by the second lead screw.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] A support block is placed in the center of the turntable to support the product to be processed. The product is placed in the center of the turntable by the support block, so that the distance between each side and the spindle box is uniform. When processing one side is completed and processing of other sides of the product is to be continued, the telescopic rod of the pressing device retracts, and the turntable rotates. The processing steps are reduced and the efficiency is high. At the same time, it avoids the problems of reduced processing accuracy and processing quality caused by the need to remove the product multiple times and the accumulation of positioning errors.

[0020] Since the product to be processed is supported by the pad block, and the top view projection of the pad block is within the top view projection of the product to be processed, the height of the pad block is configured to avoid interference between the spindle box and the turntable. In this way, the spindle box will not interfere with the turntable or the pad block.

[0021] The column is slidably connected to the base. Moving the column forward allows the spindle box to move forward, ensuring that the product can be processed. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the milling machine used in this embodiment;

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of the spindle box and mounting base;

[0024] Figure 3 for Figure 2 3D exploded view of the spindle box and mounting base;

[0025] Base 100;

[0026] Turntable 200; pad block 210;

[0027] Gantry fixing frame 300; gantry frame 310; pressing device 320;

[0028] Column 400; Second motor 410; Second lead screw 420;

[0029] Spindle box 500; First threaded sleeve 510; Protrusion 520;

[0030] Mounting base 600; second threaded sleeve 610; first motor 620; first lead screw 630; limiting part 640; connecting ear 641; limiting plate 642; limiting groove 650. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] A milling machine, see Figures 1-3 The system includes a base 100, a turntable 200, a gantry frame 300, a column 400, and a spindle box 500. In this embodiment, the turntable 200 is an existing machining center turntable 200, which is mounted on the base 100. A support block 210 for supporting the product to be processed is provided in the middle of the turntable 200. The top view projection of the support block 210 is within the top view projection of the product to be processed. The height of the support block 210 is configured to avoid interference between the spindle box 500 and the turntable 200; the specific height can be designed according to the dimensions of the spindle box 500 and other structures. With the above design of the support block 210, the spindle box 500 will not interfere with the turntable 200 or the support block 210. The gantry frame 300 includes a gantry frame 310 and a pressing device 320. The gantry 310 is mounted on the base 100. It is understood that the distance between the two support columns of the gantry 310 is sufficient to ensure that it will not interfere with the turntable 200. The pressing device 320 is preferably a hydraulic cylinder, which is mounted on the gantry 310. The bottom end of the cylinder's telescopic rod is used to press the top surface of the product to be processed, thereby fixing the product to be processed on the turntable 200. The column 400 is located on the rear side of the turntable 200 and is slidably connected to the base 100. The spindle box 500 is slidably connected to the column 400.

[0033] When milling products with small dimensions that require machining on all four sides, the product is placed on the pad 210, specifically in the center of the worktable. Then, the telescopic rod of the pressing device 320 moves downwards to press and secure the product. Next, the column 400 moves forward to machine one side of the product. After machining one side, the telescopic cylinder retracts upwards, and the turntable 200 rotates to face the next side of the product towards the spindle box 500. This process is repeated for subsequent sides. In this embodiment, the milling machine eliminates the need to remove and reposition the product when machining multiple sides, reducing processing steps and increasing efficiency. It also avoids the problems of reduced machining accuracy and quality caused by repeated product removal and accumulated positioning errors.

[0034] In this embodiment, the pad 210 is detachably connected to the turntable 200, for example, by bolts. The detachable design of the pad 210 allows for the replacement of pads 210 of the appropriate size according to the size of the product, so as to adapt to products of different sizes to be processed, thereby improving the versatility of the equipment; at the same time, it simplifies the maintenance process, as the pad 210 can be replaced independently when it is worn, thereby reducing maintenance costs.

[0035] Among them, the pad 210 is long and there are three of them. The three pads 210 are spaced apart, and each pad 210 is fixed to the turntable 200 by bolts.

[0036] In this embodiment, a mounting base 600 is provided outside the spindle box 500. The spindle is slidably connected to the mounting base 600, and the mounting base 600 is slidably connected to the column 400. The mounting base 600 serves as an intermediate carrier, enabling the spindle box 500 to move back and forth, thereby moving it above the turntable 200, increasing the spindle's travel in the back and forth direction, and enabling the processing of products of various sizes.

[0037] The mounting base 600 is L-shaped. Its vertical portion, near the column 400, has a second threaded sleeve 610. The column 400 has a second motor 410 and a second lead screw 420 connected to the second motor 410. The second lead screw 420 engages with the second threaded sleeve 610 to drive the mounting base 600 to move up and down. The horizontal portion of the mounting base 600 extends away from the column 400. Its top surface has a first motor 620 and a first lead screw 630 connected to the first motor 620. The bottom of the spindle box 500 has a first threaded sleeve 510. The first lead screw 630 engages with the first threaded sleeve 510 to drive the spindle box 500 to move back and forth.

[0038] In this embodiment, the column 400 also uses a screw drive to move back and forth.

[0039] In this embodiment, the mounting base 600 is provided with a limiting part 640, which is located at the top of the mounting base 600 and away from the column 400. The limiting part 640 is 7-shaped and extends along the length of the mounting base 600. A limiting groove 650 is formed between the limiting part 640 and the mounting base 600. The top of the spindle box 500 is provided with a protrusion 520 that is engaged in the limiting groove 650. The spindle box 500 is engaged in the limiting groove 650 by the protrusion 520, which can improve the assembly stability of the spindle box 500. In addition, the limiting groove 650 and the protrusion 520 also form a guide structure for back-and-forth movement, improving the movement stability.

[0040] In this embodiment, the top of the mounting base 600 extends horizontally outward to the side away from the column 400 to connect the ear 641. The ear 641 is connected to a downwardly extending limiting plate 642, and the limiting plate 642 and the ear 641 form the aforementioned limiting portion 640.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A milling machine characterized by: Includes base, turntable, gantry frame, column and spindle box; The turntable is mounted on the base, and a pad for supporting the product to be processed is provided in the middle of the turntable. The top view projection of the pad is within the top view projection of the product to be processed. The height of the pad is configured to avoid interference between the spindle box and the turntable. The gantry fixing frame includes a gantry frame and a pressing device. The gantry frame is mounted on the base, and the pressing device is installed on the gantry frame. The pressing device has a telescopic rod that can extend and retract vertically. The bottom end of the telescopic rod is used to press the top surface of the product to be processed. The column is slidably connected to the base from front to back, and the spindle box is slidably connected to the column from top to bottom.

2. The miller as claimed in claim 1, wherein: The pad is detachably connected to the turntable.

3. The miller as claimed in claim 1, wherein: The pad is long and narrow, and there are multiple pads arranged at intervals.

4. The miller as claimed in claim 1, wherein: The spindle box is provided with a mounting base, the spindle is slidably connected to the mounting base in the front and back, and the mounting base is slidably connected to the column in the back and forth.

5. The miller as claimed in claim 4, characterized in that: The mounting base is L-shaped.

6. The miller as claimed in claim 5, wherein: The mounting base is provided with a limiting part, which is located at the top of the mounting base and away from the column. The limiting part is 7-shaped, and a limiting groove is formed between the limiting part and the mounting base. The top of the spindle box is provided with a protrusion that is engaged in the limiting groove.

7. The miller as claimed in claim 6, wherein: The top of the mounting base extends horizontally outward to form a connecting ear, and the connecting ear is connected to a downwardly extending limiting plate, which together with the connecting ear forms the limiting part.

8. The miller as claimed in claim 4, wherein: The mounting base is equipped with a first motor and a first lead screw connected to the first motor. The bottom of the spindle box is equipped with a first threaded sleeve, and the first threaded sleeve is driven by the first lead screw.

9. The miller as claimed in claim 4, wherein: The column is equipped with a second motor and a second lead screw connected to the second motor. The mounting base is provided with a second threaded sleeve on the side near the column, and the second threaded sleeve is driven by the second lead screw.

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