Numerical control milling machine

Abstract

The utility model relates to the technical field of machine tools, in particular to a numerical control milling machine which solves the technical problems that on the premise that cost is considered, a small numerical control milling machine usually replaces a cutter manually, and after the cutter is manually disassembled and assembled, the cutter needs to be set again so as to guarantee machining precision, a straight groove is formed in the lower portion of a connector, and a positioning plate is inserted into the straight groove. The lower portion of the positioning plate is connected with a rotary disc, the lower surface of the rotary disc is connected with a clamp through a rotary shaft, the rotary shaft, the clamp and a power output shaft are concentrically arranged, the rotary shaft is rotationally connected into sliding blocks, the sliding blocks are slidably connected into a frame, the multiple sliding blocks are slidably connected into the frame, and the frame is connected to a power box through a hanging frame. The unconnected rotating clamps are located on one side of the frame and do not interfere with a working tool, switching can be completed by sliding the rotating clamps along the frame when the tool is switched, it is guaranteed that the tool machining face of each rotating clamp is flush before machining, in this way, tool setting does not need to be conducted again when the rotating clamps are switched, and the milling efficiency of the milling machine is greatly improved.

Description

Technical Field

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

[0002] CNC milling machines evolved from traditional milling machines. In 1952, MIT installed an experimental CNC system on a vertical milling machine, successfully achieving simultaneous control of three axes of motion, thus creating the world's first CNC machine tool. Early CNC systems used vacuum tubes, which were bulky and consumed a lot of power, and were mainly used in the military. With the development of electronic technology, CNC systems have evolved from hardware-connected CNC to computer-controlled CNC, and components have also evolved from vacuum tubes and transistors to small-scale integrated circuits and large-scale integrated circuits.

[0003] Existing small CNC milling machines typically require manual tool changing to ensure machining accuracy, which is a very cumbersome process, as manual tool removal and installation necessitates tool resetting to maintain machining precision. Utility Model Content

[0004] This invention addresses the technical problem that existing small CNC milling machines, considering cost, typically require manual tool changing, which necessitates re-setting the tools after manual disassembly and installation to ensure machining accuracy, making the process extremely cumbersome. Therefore, this invention provides a CNC milling machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A CNC milling machine, comprising: a frame, a power box vertically slidably connected to the frame, a Z-axis drive mechanism capable of driving the power box to slide vertically along the frame, the lower end of the power output shaft at the lower part of the power box being connected to a connector, the connector being connected to a rotating fixture, the rotating fixture including a positioning plate, a straight groove being provided at the lower part of the connector, the positioning plate being inserted into the straight groove, the positioning plate being connected to the connector by a stud, a turntable being connected to the lower part of the positioning plate, the lower surface of the turntable being connected to the fixture via a rotating shaft, the rotating shaft, the fixture and the power output shaft being concentrically arranged, the rotating shaft being rotatably connected to a slider, the slider being slidably connected to a frame, multiple sliders being slidably connected within the frame, and the frame being connected to the power box via a hanger.

[0006] Preferably, the frame is high at both ends and low in the middle. The rotating clamp in the middle area is connected to the joint. The slider is connected to the side of the wheel frame. The roller shaft is rotatably connected inside the wheel frame. The roller can roll in the frame groove. There is a gap between the roller and the top of the frame groove.

[0007] Preferably, the slider has grooves on both sides, the wheel frame includes a square rod, the square rod is connected to the slider inside the groove, a slide is slidably connected to the square rod, springs are sleeved on the upper and lower parts of the slide, and a roller shaft is rotatably connected inside the slide, with the springs in a compressed state.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] The unconnected rotating fixture is located on one side of the frame and will not interfere with the tool being used. When switching tools, the rotating fixture can be slid along the frame to complete the switch. Before machining, ensure that the tool machining surfaces of each rotating fixture are flush. In this way, there is no need to re-set the tool when switching rotating fixtures, which greatly improves the milling efficiency of the milling machine.

[0010] The frame is set high at both ends and low in the middle. The cutting tool of the rotating fixture on one side is at a higher height and will not interfere with the workpiece. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0014] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 4 .

[0015] In the diagram: 1. Frame; 2. Power box; 3. Z-axis drive mechanism; 4. Power output shaft; 5. Connector; 6. Rotating clamp; 61. Positioning plate; 62. Stud; 63. Turntable; 64. Shaft; 65. Clamp; 66. Slider; 67. Wheel frame; 671. Square rod; 672. Carriage; 673. Spring; 68. Roller; 69. Groove; 8. Frame; 9. Hanger. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] The following is in conjunction with the appendix Figure 1-4 This embodiment describes a CNC milling machine, comprising: a frame 1, a power box 2 vertically slidably connected to the frame 1, a Z-axis drive mechanism 3 capable of driving the power box 2 to slide vertically along the frame 1, a power output shaft 4 at the lower part of the power box 2 connected at the lower end to a connector 5, the connector 5 connected to a rotating fixture 6, the rotating fixture 6 including a positioning plate 61, a straight groove opened at the lower part of the connector 5, the positioning plate 61 inserted into the straight groove, the positioning plate 61 and the connector 5 connected by a stud 62, a turntable 63 connected at the lower part of the positioning plate 61, the lower surface of the turntable 63 connected to a fixture 65 via a rotating shaft 64, the rotating shaft 64, the fixture 65 and the power output shaft 4 concentrically arranged, the rotating shaft 64 rotatably connected to a slider 66, the slider 66 slidably connected to a frame 8, a plurality of sliders 66 slidably connected within the frame 8, and the frame 8 connected to the power box 2 via a hanger 9.

[0020] Before machining, ensure that the tool machining surfaces of each rotating fixture 6 are flush. During machining, the power box 2 transmits power to the power output shaft 4, which drives the rotating fixture 6 to rotate with the tool through the connector 5 for milling. At this time, the unconnected rotating fixture 6 is located on one side of the frame and will not interfere with the tool being used. Under the friction between the sliders 66, the side rotating fixture 6 will not slide. Alternatively, a support plate can be added to the frame 8, and the edge rotating fixture 6 can be positioned by bolting the support plate to the positioning plate 61. When switching tools, remove the stud 62 and push the rotating fixture 6 out along the frame 8. The positioning plate 61 of the side rotating fixture 6 is inserted into the groove of the connector 5 and fixed by the stud 62. Since the tool machining surfaces of each rotating fixture 6 are flush, there is no need to re-set the tool when switching rotating fixtures 6, which greatly improves the milling efficiency of the milling machine.

[0021] The frame 8 is high at both ends and low in the middle. The rotating clamp 6 in the middle area is connected to the joint 5. The slider 66 is connected to the side of the wheel frame 67. The roller 68 shaft is rotatably connected inside the wheel frame 67. The roller 68 can roll in the groove of the frame 8. There is a gap between the roller 68 and the top of the inner groove of the frame 8.

[0022] The frame 8 is set with high ends and low middle. The tool height of the rotating fixture 6 located on one side is relatively high. When the tool of the rotating fixture 6 in the middle is milling, the tool of the rotating fixture 6 at the edge will not interfere with the workpiece. Instead, it rolls within the frame 8 through the roller 68, which overcomes the disadvantage that it cannot slide at the bend.

[0023] The slider 66 has slots 69 on both sides. The wheel frame 67 includes a square rod 671. The square rod 671 is connected to the slider 66 inside the slot 69. A slide 672 is slidably connected to the square rod 671. Springs 673 are sleeved on the square rod 671 at the upper and lower parts of the slide 672. The shaft end of the roller 68 is rotatably connected inside the slide 672. The spring 673 is in a compressed state.

[0024] When the frame 8 vibrates during processing, the vibration is transmitted to the carriage 672 through the roller 68. Under the damping action of the carriage 672 and the square rod 671, the vibration of the edge rotating fixture 6 is greatly reduced, thus avoiding the impact of vibration on the clamping accuracy of the tool in the rotating fixture 6.

[0025] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC milling machine comprising: The rack (1) is vertically and slidingly connected with a power box (2), a Z-axis driving mechanism (3) can drive the power box (2) to vertically slide along the rack (1), the lower end of a power output shaft (4) of the power box (2) is connected with a joint (5), the joint (5) is connected with a rotating clamp (6), The rotating clamp (6) comprises a positioning plate (61), a straight slot is formed in the lower part of the joint (5), the positioning plate (61) is inserted into the straight slot, the positioning plate (61) is connected with the joint (5) through a stud (62), the lower part of the positioning plate (61) is connected with a rotating disc (63), the lower surface of the rotating disc (63) is connected with a clamp (65) through a rotating shaft (64), the rotating shaft (64) and the clamp (65) are concentrically arranged with the power output shaft (4), the rotating shaft (64) is rotatably connected into a sliding block (66), the sliding block (66) is slidingly connected into a frame (8), a plurality of sliding blocks (66) are slidingly connected into the frame (8), and the frame (8) is connected with the power box (2) through a hanger (9).

2. The numerically controlled milling machine according to claim 1, wherein: The frame (8) is high at both ends and low in the middle, the rotating clamp (6) in the middle region is connected with the joint (5), the sliding block (66) is connected with a wheel frame (67) on the side surface, the wheel frame (67) is rotatably connected with the shaft end of a roller (68), the roller (68) can roll in the slot of the frame (8), and a gap is left between the roller (68) and the top of the slot in the frame (8).

3. The numerically controlled milling machine according to claim 1, wherein: The sliding block (66) is provided with a slot (69) on the side surface, the wheel frame (67) comprises a square rod (671), the square rod (671) is connected with the sliding block (66) inside the slot (69), a sliding frame (672) is slidingly connected on the square rod (671), springs (673) are sleeved on the square rods (671) at the upper and lower parts of the sliding frame (672), the shaft end of the roller (68) is rotatably connected into the sliding frame (672), and the springs (673) are in a compressed state.

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