Numerical control profiling machine

Abstract

The utility model discloses a numerical control profiling machine which comprises a machine frame, a three-axis moving mechanism installed on the top of the machine frame, a cutter motor installed on the three-axis moving mechanism, a milling cutter installed on the cutter motor and two clamp devices installed on the machine frame side by side. The clamp device comprises a turntable sleeve fixed on the rack, a clamp rotating shaft rotatably mounted in the turntable sleeve, a workpiece chuck mounted at the upper end of the clamp rotating shaft, a driven gear mounted at the lower end of the clamp rotating shaft, and a driving gear meshed with the driven gear; the driving gear is mounted on a speed reducing motor positioned in the rack; a protective cover and a protective door device are mounted on the periphery of the upper end of the rack; according to the utility model, continuous processing can be realized, the working efficiency is high, the protective property is better, and chippings can be prevented or reduced from splashing out of the machine.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to a numerical control profiling machine. Background Art

[0002] CNC profiling machine is also called CNC machine tool, which is an automatic machine tool. CNC machine tool automatically processes the parts according to the pre-programmed processing program. The processing route, process parameters, tool motion trajectory, displacement, cutting parameters and auxiliary functions of the parts are compiled into a processing program sheet according to the instruction code and program format specified by the CNC machine tool, and then the contents of the program sheet are recorded on the control medium and then input into the CNC device of the CNC machine tool, thereby commanding the machine tool to process the parts.

[0003] A milling machine is a machine tool that can process the surface of a workpiece through a milling cutter. It is a widely used machine tool that can process flat surfaces and various curved surfaces. When the milling machine is working, the workpiece is mounted on a workbench or an accessory such as a dividing head. The rotation of the milling cutter is the main motion, supplemented by the feed motion of the workbench or the milling head, and the workpiece can obtain the desired processing surface.

[0004] Existing machine tools have some or all of the following deficiencies: 1. They can only process one workpiece at a time and cannot process continuously. Replacing workpieces will waste a lot of time and the processing efficiency is low. 2. There is no reasonable protective device, and debris is easy to splash out of the machine during processing, which poses a certain safety hazard. 3. It is not suitable for processing the inner wall of the annular workpieces such as bowls, cans, and cups, and its applicability is poor. 4. The resistance of the rotating device of the fixture is large during operation, and the rotating shaft is prone to string movement, resulting in poor processing accuracy. Utility Model Content

[0005] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a CNC profiling machine that can perform uninterrupted processing, has high working efficiency, has good protection, can prevent or reduce debris from splashing out of the machine, can process the circular inner walls of workpieces such as bowls, cups or cans, and has good applicability.

[0006] A numerical control profiling machine comprises a frame, a three-axis moving mechanism installed on the top of the frame, a tool motor installed on the three-axis moving mechanism, and a milling cutter installed on the tool motor. The three-axis moving mechanism can drive the tool motor to move left and right, up and down, or forward and backward. The machine also comprises two fixture devices installed side by side on the frame. The fixture device comprises a turntable sleeve fixed on the frame, a fixture shaft rotatably installed in the turntable sleeve, a workpiece chuck installed on the upper end of the fixture shaft, a driven gear installed on the lower end of the fixture shaft, and a driving gear meshing with the driven gear, wherein the driving gear is installed on a reduction motor located in the frame. A protective cover and a protective door device are installed on the periphery of the upper end of the frame. The protective door device comprises slide rails symmetrically installed at the upper and lower ends of the protective cover, a slide seat installed on the two slide rails, a moving door slidably connected to the two slide rails through the slide seat at the upper and lower ends, and an induction switch installed on the protective cover on both sides of the moving door. The moving door can shield the area where one of the workpiece chucks is located to prevent debris generated during workpiece processing from splashing out of the machine. The area where the other workpiece chuck is located is exposed to facilitate the removal of the processed workpiece.

[0007] In some embodiments, the clamp device also includes an upper bearing and a lower bearing connected to the clamp shaft inside the two ends of the turntable sleeve, an upper pressure cover and a lower pressure cover connected to the clamp shaft outside the two ends of the turntable sleeve, an upper oil seal connected to the clamp shaft at the upper end of the upper pressure cover, and a lower oil seal connected to the clamp shaft at the lower end of the upper bearing.

[0008] In some embodiments, a turntable origin switch is installed on the side of each workpiece chuck, the lower end of the turntable origin switch is fixed on the frame, and the workpiece chuck is a three-jaw chuck.

[0009] In some embodiments, a protective plate is installed on the periphery of the frame.

[0010] In some embodiments, the three-axis moving mechanism includes a left-right moving component, an up-down moving component, and a forward-backward moving component. The left-right moving component, the up-down moving component, and the forward-backward moving component all include two symmetrically installed linear guide rails, a slide plate connected to the linear guide rails through a slider, a nut seat fixed to the bottom of the slide plate, a screw rod threadedly connected to the nut seat, and a screw rod seat located at both ends of the screw rod and rotatably connected to the screw rod. The two screw rod seats are symmetrically installed between the two linear guide rails, and a servo motor is connected to one end of the screw rod.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 It is a left-view stereoscopic structural schematic diagram of the present application;

[0014] Figure 2 This is a right-side stereoscopic structural diagram of the present application after removing the movable door;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the present application after removing the protective cover and protective plate;

[0016] Figure 4 yes Figure 3 Schematic diagram of the right view plane;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the protective door device of the present application;

[0018] Figure 6 is a side schematic diagram of the clamp device of the present application;

[0019] Figure 7 yes Figure 6 Schematic diagram of the split structure;

[0020] Figure 8 It is a three-dimensional structural schematic diagram of the three-axis moving mechanism of the present application.

[0021] Reference numerals:

[0022] Frame 1, three-axis moving mechanism 2, left-right moving assembly 20, up-down moving assembly 21, front-back moving assembly 22, linear guide rail 201, slider 202, slide plate 203, nut seat 204, screw rod 205, screw rod seat 206, servo motor 207, stand 208;

[0023] Tool motor 3, milling cutter 4, fixture device 5;

[0024] Turntable sleeve 500, fixture shaft 501, workpiece chuck 502, driven gear 503, driving gear 504, reduction motor 505, upper bearing 506, lower bearing 507, upper pressure cover 508, lower pressure cover 509, upper oil seal 510, lower oil seal 511;

[0025] Protective cover 6, opening 601, protective door device 7, slide rail 700, slide seat 701, movable door 702, induction switch 703;

[0026] Wooden bowl 8, turntable origin switch 9, protective plate 10. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1-Figure 8A CNC profiling machine includes a frame 1, a three-axis moving mechanism 2 installed on the top of the frame 1, a tool motor 3 installed on the three-axis moving mechanism 2, and a milling cutter 4 installed on the tool motor 3. The tool motor 3 drives the milling cutter 4 to rotate. The three-axis moving mechanism 2 can drive the tool motor 3 to move left and right, up and down, or forward and backward. It also includes two fixture devices 5 installed side by side on the frame 1. The fixture device 5 includes a turntable sleeve 500 fixed on the frame 1, a fixture shaft 501 rotatably installed in the turntable sleeve 500, a workpiece chuck 502 installed at the upper end of the fixture shaft 501, a driven gear 503 installed at the lower end of the fixture shaft 501, and a driving gear 504 meshing with the driven gear 503. The driving gear 504 is installed on the output shaft of a reduction motor 505 located in the frame 1. The workpiece The chuck 502 is used to clamp or release the workpiece; a protective cover 6 and a protective door device 7 are installed on the outer periphery of the upper end of the frame 1, and the protective door device 7 includes slide rails 700 symmetrically installed at the upper and lower ends of the protective cover 6, a slide seat 701 installed on the two slide rails 700, a movable door 702 slidably connected to the two slide rails 700 through the slide seat 701 at the upper and lower ends, and an induction switch 703 installed on the protective cover 6 on both sides of the movable door 702. The movable door 702 is located at the opening 601 on the front side of the protective cover 6, and the width of the movable door 702 is approximately half the width of the opening 601. The movable door 702 can block the area where one of the workpiece chucks 502 is located to prevent debris generated during workpiece processing from splashing out of the machine, while the area where the other workpiece chuck 502 is located is exposed, which is convenient for workers or robots to take out the processed workpiece.

[0032] When in use, a wooden bowl 8 to be processed is placed on each of the two workpiece chucks 502, and the multiple telescopic claws on the workpiece chuck 502 synchronously clamp the workpiece, and the three-axis moving mechanism 2 drives the milling cutter 4 to move, and finally the milling cutter 4 enters the inner cavity of one of the wooden bowls 8 and is close to the annular inner wall of the wooden bowl 8, and then the protective door is pushed and pulled to the end where the milling cutter 4 is located, and when the protective door touches the induction switch 703 installed at this end, the tool motor 3 drives the milling cutter 4 to rotate, and at the same time the reduction motor 505 drives the driving gear 504 to rotate, and the driving gear 504 drives the fixture shaft 501, the workpiece chuck 502 and the wooden bowl 8 to rotate synchronously through the driven gear 503; when the milling cutter 4 rotates, a certain area of ​​the annular inner wall of the wooden bowl 8 is processed, and the workpiece chuck 502 and the wooden bowl 8 rotate synchronously, so that the milling cutter 4 can process the entire area of ​​the annular inner wall of the wooden bowl 8, and the processing can be cutting, grinding or polishing. When the wooden bowl 8 is processed, the protective door is pushed and pulled to the opposite end. When the protective door touches the induction switch 703 installed at this end, the tool motor 3 and the reduction motor 505 stop rotating, and the three-axis moving mechanism 2 drives the milling cutter 4 to move to the inner cavity of another wooden bowl 8. Then the wooden bowl 8 is processed in the same manner as above. During this process, the processed wooden bowl 8 or other workpieces can be taken out, and then replaced with another workpiece to be processed, and the cycle continues. The present application can be processed uninterruptedly, has high working efficiency, good protection, can prevent or reduce debris from splashing out of the machine, and can process the annular inner wall of workpieces such as bowls, cups or cans, and has good applicability.

[0033] In some embodiments, the clamp device 5 also includes an upper bearing 506 and a lower bearing 507 which are sleeved on the clamp shaft 501 inside the two ends of the turntable sleeve 500, an upper pressure cover 508 and a lower pressure cover 509 which are sleeved on the clamp shaft 501 outside the two ends of the turntable sleeve 500, an upper oil seal 510 which is sleeved on the clamp shaft 501 at the upper end of the upper pressure cover 508, and a lower oil seal 511 which is sleeved on the clamp shaft 501 at the lower end of the upper bearing 506; the upper pressure cover 508 and the lower pressure cover 509 are used to prevent or reduce the axial movement of the clamp shaft 501, and can also prevent the upper bearing 506 and the lower bearing 507 from shifting, thereby improving the processing accuracy of the workpiece, and the upper oil seal 510 and the lower oil seal 511 are used to prevent or reduce the lubricating oil from flowing out of the turntable sleeve 500.

[0034] In some embodiments, a turntable origin switch 9 is installed on the side of each workpiece chuck 502, and the lower end of the turntable origin switch 9 is fixed on the frame 1. The workpiece chuck 502 is a three-jaw chuck; the origin switch is generally used for zeroing. Since the servo motor is used for precise positioning, it is necessary to determine the zero position. This origin switch can be used as a zero point or as an origin proximity switch; the three-jaw chuck is a machine tool accessory that utilizes the radial movement of three movable jaws evenly distributed on the chuck body to clamp and position the workpiece. The three-jaw chuck includes a chuck body, movable jaws and a jaw drive assembly.

[0035] In some embodiments, a protective plate 10 is installed on the periphery of the frame 1, which closes the four sides of the frame 1 to reduce dust entry and prevent humans or animals from being harmed by the reduction motor 505, etc.

[0036] In some embodiments, the three-axis moving mechanism 2 includes a left-right moving assembly 20, an up-down moving assembly 21, and a forward-backward moving assembly 22. The left-right moving assembly 20, the up-down moving assembly 21, and the forward-backward moving assembly 22 all include two symmetrically installed linear guide rails 201, a slide plate 203 connected to the linear guide rails 201 through a slider 202, a nut seat 204 fixed to the bottom of the slide plate 203, a screw rod 205 threadedly connected to the nut seat 204, and a screw rod seat 20 located at both ends of the screw rod 205 and rotatably connected to the screw rod 205. 6. Two screw rod seats 206 are symmetrically installed between the two linear guide rails 201, and a servo motor 207 is connected to one end of the screw rod 205; the servo motor 207 drives the screw rod 205 to rotate, and then the nut seat 204 and the slide plate 203 move linearly synchronously; the left and right moving component 20 is installed on the top of the frame 1, the front and back moving component 22 is installed on the slide plate 203 in the left and right moving component 20, a stand 208 is installed on the slide plate 203 of the front and back moving component 22, and the up and down moving component 21 is installed on one side of the stand 208.

[0037] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the utility model have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. A CNC profiling machine, comprising a frame, a three-axis moving mechanism mounted on the top of the frame, a tool motor mounted on the three-axis moving mechanism, and a milling cutter mounted on the tool motor, wherein the three-axis moving mechanism can drive the tool motor to move left and right, up and down, or forward and backward, and wherein: The invention also includes two fixture devices installed side by side on the frame, the fixture device includes a turntable sleeve fixed on the frame, a fixture shaft rotatably installed in the turntable sleeve, a workpiece chuck installed at the upper end of the fixture shaft, a driven gear installed at the lower end of the fixture shaft, and a driving gear meshing with the driven gear, wherein the driving gear is installed on a reduction motor located in the frame; a protective cover and a protective door device are installed on the outer periphery of the upper end of the frame, the protective door device includes slide rails symmetrically installed at the upper and lower ends of the protective cover, a slide seat installed on the two slide rails, a moving door slidably connected to the two slide rails through the slide seat at the upper and lower ends, and an induction switch installed on the protective cover on both sides of the moving door, the moving door can shield the area where one of the workpiece chucks is located to prevent debris generated during workpiece processing from splashing out of the machine, and the area where the other workpiece chuck is located is exposed to facilitate the removal of the processed workpiece.

2. The CNC profiling machine according to claim 1, characterized in that: The clamp device also includes an upper bearing and a lower bearing sleeved on the clamp rotating shaft inside the two ends of the turntable sleeve, an upper pressure cover and a lower pressure cover sleeved on the clamp rotating shaft outside the two ends of the turntable sleeve, an upper oil seal sleeved on the clamp rotating shaft at the upper end of the upper pressure cover, and a lower oil seal sleeved on the clamp rotating shaft at the lower end of the upper bearing.

3. The CNC profiling machine according to claim 1 or 2, characterized in that: A turntable origin switch is installed on the side of each workpiece chuck, the lower end of the turntable origin switch is fixed on the frame, and the workpiece chuck is a three-jaw chuck.

4. The CNC profiling machine according to claim 3, characterized in that: A protective plate is installed on the periphery of the rack.

5. The CNC profiling machine according to claim 1 or 2, characterized in that: The three-axis moving mechanism includes a left-right moving component, an up-down moving component and a front-back moving component. The left-right moving component, the up-down moving component and the front-back moving component all include two symmetrically installed linear guide rails, a slide plate connected to the linear guide rails through a slider, a nut seat fixed to the bottom of the slide plate, a screw rod threadedly connected to the nut seat, a screw rod seat located at both ends of the screw rod and rotatably connected to the screw rod, the two screw rod seats are symmetrically installed between the two linear guide rails, and a servo motor is connected to one end of the screw rod.

Images