High-precision numerical control milling machine tool and method thereof

Abstract

The invention discloses a high-precision numerical control milling machine tool and a method thereof. Comprising a box body, a workbench mechanism arranged on the box body, a tool magazine mechanism arranged behind the workbench mechanism and located on the box body, a main shaft mechanism arranged above the workbench mechanism, a machine cover arranged on the box body and a button box arranged on the machine cover. The workbench mechanism comprises a working sliding rail set arranged on the box body and a workbench base arranged on the working sliding rail set, a plurality of pressure sensors are arranged on the workbench base, and tray assemblies are arranged on the pressure sensors. Through a high-precision numerical control milling method, multi-station linkage is achieved, multi-station simultaneous work can be achieved, the consistency of machined products is guaranteed, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-precision numerical control machining, in particular to a high-precision numerical control milling machine tool and a method thereof. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. It does not require workers to directly operate the machine tool, but realizes processing by compiling a processing program. In the process of processing, due to the different processing accuracy requirements of different parts, the tool often needs to be replaced during processing. Therefore, setting a tool magazine on the CNC machine tool has become an indispensable choice for mechanical processing factories. Take the engraving machine and CNC as examples of CNC machine tools in the prior art. It is to add a tool magazine with a straight-row structure to the engraving machine and set a standby tool holder on the tool magazine. When the tool needs to be replaced, the tool to be replaced is first moved from the spindle to the standby tool holder, and then the tool magazine and the standby tool holder are moved to a position close to the spindle of the engraving machine, and then the spindle of the engraving machine is moved to place the original tool on the spindle into an empty position, and finally the tool to be installed in the tool magazine is installed on the spindle to complete the tool change operation. Since such CNC machine tools have to move the entire tool magazine, they have the following problems: 1. The size of the tool magazine is limited by the size of the precision carving processing platform, and the tool magazine cannot store more tools; 2. The tools in the tool magazine are prone to shaking and tilting during the movement of the tool magazine, resulting in inaccurate spindle tool selection and tool setting, thereby causing errors in tool processing.

[0003] With the rapid development of intelligent display terminal equipment, various manufacturers continue to launch a new generation of glass screens, among which 2.5D and 3D curved glass are the most powerful and have the best market prospects. In the production process of curved glass, grinding and polishing is an extremely important process, but in the current glass grinding and polishing and mobile phone housing, optical lenses and other special-shaped curved surface polishing processing industries, traditional equipment generally has problems such as low processing accuracy, low production efficiency, poor product quality, and lack of automation functions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a high-precision CNC milling machine tool and method thereof with multi-station linkage, which can realize multiple stations working simultaneously, ensure the consistency of processed products, and improve processing efficiency.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A high-precision CNC milling machine tool comprises a box body, a workbench mechanism arranged on the box body, a tool magazine mechanism arranged behind the workbench mechanism and located on the box body, a spindle mechanism arranged above the workbench mechanism, a machine cover arranged on the box body, and a button box arranged on the machine cover; the workbench mechanism comprises a working slide rail group arranged on the box body, a workbench base arranged on the working slide rail group, a plurality of pressure sensors are arranged on the workbench base, and a plurality of pressure sensors are each provided with a tray assembly.

[0007] In one embodiment, a working driving member is provided on the box body for driving the workbench base to perform reciprocating motion on the working slide rail assembly.

[0008] In one embodiment, the tray assembly includes a box-shaped water-enclosing sheet metal, a fixture disposed inside the water-enclosing sheet metal, a liquid inlet pipe disposed at one end of the water-enclosing sheet metal and connected to the water-enclosing sheet metal, and a vertical liquid outlet opened on one side of the liquid inlet pipe and located on the water-enclosing sheet metal.

[0009] In one embodiment, a drainage plate is provided below the vertical liquid outlet and at the bottom of the outer side of the water surrounding sheet metal, and a manual ball valve is connected to one end of the liquid inlet pipe away from the water surrounding sheet metal.

[0010] In one embodiment, a cutting edge is provided at the top of the water-enclosing sheet metal, and a feed port is provided at the top of the water-enclosing sheet metal and at one end of the cutting edge.

[0011] In one embodiment, a transparent soft curtain is provided at one end of the feed port away from the knife feed port; a protective cover is provided on the workbench base, and the pressure sensor and the tray assembly are both arranged in the protective cover.

[0012] In one embodiment, the tool magazine mechanism includes a tool handle mounting frame fixedly connected to the workbench base, and a plurality of symmetrical tool clamps are provided on the tool handle mounting frame.

[0013] In one embodiment, the spindle mechanism includes a gantry arranged on the box body, a fixed plate is provided at the front end of the gantry, a transverse slide rail group is provided on the side of the fixed plate opposite to the gantry, a vertical connecting plate capable of making transverse movements on the transverse slide rail group is provided on the transverse slide rail group, and a transverse driving member is provided on the fixed plate for driving the vertical connecting plate to make transverse movements on the transverse slide rail group.

[0014] In one embodiment, the vertical connecting plate is provided with a vertical lifting member, the output end of the vertical lifting member is connected to a support plate, the support plate is provided with a plurality of spindle motors, and the output of the spindle motor is connected to a polishing head through the support plate.

[0015] The technical solution adopted by the present invention to solve the technical problem is:

[0016] A high-precision CNC milling method comprises the following steps:

[0017] S1. Place the product on the tray assembly, and through the operation of the working drive member, the workbench base operates and drives the tray assembly to move to the specified position; through the operation of the horizontal drive member and the vertical lifting member, the polishing head moves to the top of the tray assembly;

[0018] S2. Then, according to the program set by the system, each surface of the product on each tray assembly is processed separately; during the processing, the polishing head performs high-precision grinding and polishing processing on the product under the operation of the horizontal driving member and the vertical lifting member; at the same time, the pressure sensor under the tray assembly obtains the force exerted on the product during the processing in real time and displays it on the button box;

[0019] S3. A variety of different tools are stored in the tool magazine mechanism. During the working process, different processing tools can be automatically selected according to different polishing parts;

[0020] S4. After processing, remove the polished product from the tray assembly;

[0021] S5. During the processing, the sand bucket device can discharge the grinding liquid and water separately for easy collection and subsequent recycling, and repeat this process for the next cycle.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention comprises a box body, a workbench mechanism arranged on the box body, a tool magazine mechanism arranged behind the workbench mechanism and located on the box body, a spindle mechanism arranged above the workbench mechanism, a sand bucket device arranged below the box body, a machine cover arranged on the box body, and a button box arranged on the machine cover; the workbench mechanism comprises a working slide rail group arranged on the box body, a workbench base arranged on the working slide rail group, a plurality of pressure sensors are arranged on the workbench base, and a tray assembly is arranged on the plurality of pressure sensors; thus, the present invention has multi-station linkage, can realize multi-station working at the same time, ensure the consistency of processed products, and improve processing efficiency.

[0024] 2. The present invention ensures the controllable force of the product during the processing and the visualization of the processing data by adding a pressure sensor, thereby improving the processing accuracy of the equipment, and the data obtained by the pressure sensor can provide guidance for the adjustment and improvement of the subsequent process flow.

[0025] 3. The present invention has a large-capacity tool magazine, which can realize automatic tool change according to demand; through automatic tool change, the manual tool change debugging time is saved and the equipment utilization rate is improved; at the same time, the high precision of the equipment ensures the smooth realization of the automatic loading and unloading function. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 2 For the present invention Figure 1 Schematic diagram of the structure without the hood;

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the workbench mechanism structure;

[0029] Figure 4 For the present invention Figure 4 A schematic diagram of the structure of a tray assembly;

[0030] Figure 5 For the present invention Figure 5 The right side structural diagram of ;

[0031] Figure 6 For the present invention Figure 5 The left side structural diagram of .

[0032] Figure 7 For the present invention Figure 2 Schematic diagram of the spindle mechanism structure;

[0033] In the figure: 10. box body, 15. working slide rail group, 20. workbench mechanism, 21. workbench base, 22. pressure sensor, 23. tray assembly, 23-1. water-enclosing sheet metal, 23-2. jig, 23-3. liquid inlet pipe, 23-4. vertical liquid outlet, 23-5. drainage plate, 23-6. manual ball valve, 23-7. knife inlet, 23-8. feed inlet, 23-9. transparent soft curtain, 30. tool magazine mechanism, 31. tool holder mounting bracket, 32. tool clamp, 40. spindle mechanism, 41. gantry, 42. fixing plate, 43. vertical connecting plate, 44. horizontal driving member, 45. vertical lifting member, 46. support plate, 47. spindle motor, 48. polishing head, 49. slide rail group, 50. sand bucket device, 60. machine cover, 70. button box. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Example 1

[0036] like Figure 1-2As shown, this embodiment includes a box body 10, a workbench mechanism 20 disposed on the box body 10, a tool magazine mechanism 30 disposed behind the workbench mechanism 20 and located on the box body 10, a spindle mechanism 40 disposed above the workbench mechanism 20, a sand bucket device 50 disposed below the box body 10, a machine cover 60 disposed on the box body 10, and a button box 70 disposed on the machine cover 60;

[0037] like Figure 3 As shown, the workbench mechanism 20 includes a working slide rail group 15 arranged on the box body 10 and a workbench base 21 arranged on the working slide rail group 15. In this embodiment, the box body 10 is provided with a working drive member 16 for driving the workbench base 21 to reciprocate on the working slide rail group 15; the working drive member 16 includes a telescopic cylinder, a screw slide rail, and a linear module; thereby, through the operation of the working drive member 16, the workbench base 21 is driven to reciprocate on the working slide rail group 15.

[0038] A plurality of pressure sensors 22 are provided on the workbench base 21, and a tray assembly 23 is provided on each of the plurality of pressure sensors 22; in the present embodiment, there are four pressure sensors 22 and four tray assemblies 23, and the four tray assemblies 23 are respectively arranged on the pressure sensors 22; thereby, through the arrangement of the pressure sensors 22, the force of the product in the processing process can be controlled and the data can be visualized, the processing accuracy of the equipment can be improved, and the data obtained by the pressure sensors 22 can provide guidance for the adjustment and improvement of the subsequent process flow.

[0039] like Figure 4-6 As shown, the box-shaped water-enclosing sheet metal 23-1, in this embodiment, a cutting edge 23-7 is provided on the top of the water-enclosing sheet metal 23-1; a feed port 23-8 is provided on the top of the water-enclosing sheet metal 23-1 and one end of the cutting edge 23-7, and a transparent soft curtain 23-9 is provided on the end of the feed port 23-8 away from the cutting edge 23-7; thereby, the grinding head enters the box-shaped water-enclosing sheet metal 23-1 from the cutting edge 23-7, and puts the product from the feed port 23-8 into the water-enclosing sheet metal 23-1 for processing through the transparent soft curtain 23-9; while achieving full contact between the grinding liquid and the abrasive and the glass, it is ensured that the grinding liquid only flows in and out of the inner cavity of the water-enclosing sheet metal 23-1 during processing, and splashing of the grinding liquid can be prevented, thereby ensuring the processing quality and greatly reducing the waste of the grinding liquid; at the same time, the grinding liquid immersion processing can ensure full contact between the grinding liquid and the abrasive and the glass.

[0040] In this embodiment, the transparent soft curtain 23-9 is first opened, the product is placed on the fixture 23-2 through the feed port 23-8, and then the transparent soft curtain 23-9 is closed to form a closed cavity inside the water-enclosing sheet metal 23-1.

[0041] A jig 23-2 is provided in the water-enclosing sheet metal 23-1. In the present embodiment, limit blocks are provided on the front, back, left and right sides of the jig 23-2; thus, the position of the abrasive is limited by the four limit blocks; thus, the abrasive to be soaked enters the box-shaped water-enclosing sheet metal 23-1 from the cutting edge 23-7 and is placed on the jig 23-2 for soaking; and the position of the abrasive is limited by the four limit blocks.

[0042] In this embodiment, the grinding head enters the inner cavity of the water-enclosed sheet metal 23-1 through the cutting edge 23-7 to grind and polish the product, and processes the product on the jig 23-2.

[0043] A liquid inlet pipe 23-3 connected to the water surrounding sheet metal 23-1 is provided at one end of the water surrounding sheet metal 23-1; in the present embodiment, the liquid inlet pipe 23-3 is connected to the upper part of the water surrounding sheet metal 23-1, and a manual ball valve 23-6 is connected to the end of the liquid inlet pipe 23-3 away from the water surrounding sheet metal 23-1; thus, the manual ball valve 23-6 controls the grinding liquid to enter the water surrounding sheet metal 23-1 through the liquid inlet pipe 23-3, thereby soaking the abrasive in the water surrounding sheet metal 23-1.

[0044] In this embodiment, one end of the liquid inlet pipe 23 - 3 is connected to the sand bucket device 50 ;

[0045] A vertical liquid outlet 23-4 is provided on one side of the liquid inlet pipe 23-3 and the water surrounding sheet metal 23-1; in the present embodiment, the vertical liquid outlet 23-4 extends from the bottom of the water surrounding sheet metal 23-1 to the top of the water surrounding sheet metal 23-1; thus, the grinding liquid enters the water surrounding sheet metal 23-1 through the liquid inlet pipe 23-3 and then flows out through the vertical liquid outlet 23-4, thereby realizing circulating immersion.

[0046] A drainage plate 23-5 is provided below the vertical liquid outlet 23-4 and at the bottom of the outer side of the water surrounding sheet metal 23-1; thus, the drainage plate 23-5 can guide the overflow grinding liquid to flow back to the designated area, which is beneficial for daily 5S protection; in addition, the feed port 23-8 and the knife feed port 23-7 are both located above the metallurgy 23-2.

[0047] In this embodiment, a protective cover 24 is provided on the workbench base 21, and the pressure sensor 22 and the tray assembly 23 are both arranged in the protective cover 24; and a drain pipe is connected to the bottom of the protective cover 24, and the drain pipe is connected to the sand bucket device 50;

[0048] The tool magazine mechanism 30 includes a tool holder mounting frame 31 fixedly connected to the workbench base 21 , and a plurality of symmetrical tool clamps 32 are arranged on the tool holder mounting frame 31 ; thus, the machining tool is placed in the tool clamp 32 .

[0049] like Figure 7As shown, the spindle mechanism 40 includes a gantry 41 arranged on the box body 10, a fixed plate 42 is provided at the front end of the gantry 41, a transverse slide rail group 49 is provided on the side of the fixed plate 42 opposite to the gantry 41, a vertical connecting plate 43 capable of performing transverse movement on the transverse slide rail group 49 is provided on the transverse slide rail group 49, and a transverse driving member 44 for driving the vertical connecting plate 43 to perform transverse movement on the transverse slide rail group 49 is provided on the fixed plate 42; in this embodiment, the transverse driving member 44 includes a telescopic cylinder, a screw slide rail, and a linear module;

[0050] The vertical connecting plate 43 is provided with a vertical lifting member 45, the output end of the vertical lifting member 45 is connected to a support plate 46, the support plate 46 is provided with a plurality of spindle motors 47, and the output of the spindle motor 47 passes through the support plate 46 and is connected to a polishing head 48; in the present embodiment, the vertical lifting member 45 includes a telescopic cylinder, a screw guide rail, and a linear module; thereby, through the operation of the transverse driving member 44 and the vertical lifting member 45, the polishing head 48 is moved to above the tray assembly 23.

[0051] Example 2

[0052] The high-precision CNC milling method using a high-precision CNC milling machine tool includes the following steps:

[0053] S1. Place the product on the tray assembly 23, that is, place the product on the jig 23-2, and limit the position of the product by four limit blocks; then, through the operation of the working drive member 16, the workbench base 21 operates and drives the tray assembly 23 to move to the specified position; through the operation of the horizontal drive member 44 and the vertical lifting member 45, the polishing head 48 moves to the top of the tray assembly 23;

[0054] S2. Then, according to the program set by the system, each surface of the product on each tray assembly 23 is processed separately; during the processing, the polishing head 48 performs high-precision grinding and polishing processing on the product under the operation of the horizontal drive member 44 and the vertical lifting member 45; at the same time, the pressure sensor 22 under the tray assembly 23 obtains the force exerted on the product during the processing in real time and displays it on the button box 70;

[0055] S3. The tool magazine mechanism 30 stores a variety of different tools. During the working process, different processing tools can be automatically selected according to different polishing parts;

[0056] S4. After processing is completed, remove the polished product from the tray assembly 23;

[0057] S5. During the processing, the sand bucket device 50 can discharge the grinding liquid and water separately for collection and subsequent recycling, and repeat this process for the next cycle.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the technical solutions of the present invention have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision CNC milling machine tool, characterized in that: The invention comprises a box body (10), a workbench mechanism (20) arranged on the box body (10), a tool magazine mechanism (30) arranged behind the workbench mechanism (20) and located on the box body (10), a spindle mechanism (40) arranged above the workbench mechanism (20), a sand bucket device (50) arranged below the box body (10), a machine cover (60) arranged on the box body (10), and a button box (70) arranged on the machine cover (60); the workbench mechanism (20) comprises a working slide rail group (15) arranged on the box body (10), a workbench base (21) arranged on the working slide rail group (15), a plurality of pressure sensors (22) are arranged on the workbench base (21), and a tray assembly (23) is arranged on each of the plurality of pressure sensors (22).

2. The high-precision CNC milling machine tool according to claim 1, characterized in that: The box body (10) is provided with a working driving member for driving the workbench base (21) to perform reciprocating motion on the working slide rail assembly (15).

3. The high-precision CNC milling machine tool according to claim 2, characterized in that: The tray assembly (23) comprises a box-shaped water-enclosing sheet metal (23-1), a jig (23-2) disposed inside the water-enclosing sheet metal (23-1), a liquid inlet pipe (23-3) disposed at one end of the water-enclosing sheet metal (23-1) and connected to the water-enclosing sheet metal (23-1), and a vertical liquid outlet (23-4) opened on one side of the liquid inlet pipe (23-3) and located on the water-enclosing sheet metal (23-1).

4. The high-precision CNC milling machine tool according to claim 3, characterized in that: A guide plate (23-5) is provided below the vertical liquid outlet (23-4) and at the bottom of the outer side of the water surrounding sheet metal (23-1), and a manual ball valve (23-6) is connected to one end of the liquid inlet pipe (23-3) away from the water surrounding sheet metal (23-1).

5. The high-precision CNC milling machine tool according to claim 4, characterized in that: A knife inlet (23-7) is provided at the top of the water-enclosing sheet metal (23-3), and a material feed port (23-8) is provided at the top of the water-enclosing sheet metal (23-1) and at one end of the knife inlet (23-7).

6. The high-precision CNC milling machine tool according to claim 5, characterized in that: A transparent soft curtain (23-9) is provided at one end of the feed port (23-8) away from the knife feed port (23-7); a protective cover (24) is provided on the workbench base (21), and the pressure sensor (22) and the tray assembly (23) are both arranged in the protective cover (24).

7. The high-precision CNC milling machine tool according to claim 5, characterized in that: The tool magazine mechanism (30) comprises a tool handle mounting frame (31) fixedly connected to the workbench base (21), and a plurality of symmetrical tool clamps (32) are arranged on the tool handle mounting frame (31).

8. The high-precision CNC milling machine tool according to claim 7, characterized in that: The spindle mechanism (40) comprises a gantry (41) arranged on the box body (10), a fixing plate (42) is provided at the front end of the gantry (41), a transverse slide rail group (49) is provided on the side of the fixing plate (42) opposite to the gantry (41), a vertical connecting plate (43) capable of performing transverse movement on the transverse slide rail group (49) is provided on the transverse slide rail group (49), and a transverse driving member (44) is provided on the fixing plate (42) for driving the vertical connecting plate (43) to perform transverse movement on the transverse slide rail group (49).

9. The high-precision CNC milling machine tool according to claim 8, characterized in that: The vertical connecting plate (43) is provided with a vertical lifting member (45), the output end of the vertical lifting member (45) is connected to a support plate (46), the support plate (46) is provided with a plurality of spindle motors (47), and the output of the spindle motor (47) passes through the support plate (46) and is connected to a polishing head (48).

10. The high-precision CNC milling method for a high-precision CNC milling machine tool according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the product on the tray assembly (23), and operate the working drive member (16) to operate the workbench base (21) and drive the tray assembly (23) to move to a specified position; operate the horizontal drive member (44) and the vertical lifting member (45) to move the polishing head (48) above the tray assembly (23); S2. Then, according to the program set by the system, each surface of the product on each tray assembly (23) is processed separately; during the processing, the polishing head (48) performs high-precision grinding and polishing processing on the product under the operation of the horizontal driving member (44) and the vertical lifting member (45); at the same time, the pressure sensor (22) below the tray assembly (23) obtains the force applied to the product during the processing in real time and displays it on the button box (70); S3. The tool magazine mechanism (30) stores a variety of different tools. During the working process, different processing tools can be automatically selected according to different polishing parts; S4. After processing is completed, remove the polished product from the tray assembly (23); S5. During the processing, the sand bucket device (50) can discharge the grinding liquid and water separately for easy collection and subsequent recycling, and the next cycle is repeated in this way.

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