CN115502768A

CN115502768A - CNC four-axis automatic feeding engraving and milling machine for medical industry

Info

Publication number: CN115502768A
Application number: CN202211143066.7A
Authority: CN
Inventors: 朱立亮; 杨炎培
Original assignee: Shenzhen Guang Li Jin Technology Co ltd
Current assignee: Shenzhen Guang Li Jin Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-23

Abstract

The invention discloses a CNC four-axis automatic feeding engraving and milling machine for medical industry, which is characterized in that a workpiece to be machined is placed on a feeding disc mechanism, and the workpiece to be machined is sequentially grabbed by a material fetching mechanism and is conveyed to a workpiece clamping mechanism; the workpiece clamping mechanism is arranged below the cutter driving mechanism, and the cutter driving mechanism drives the machining cutter to perform engraving and milling on the workpiece; and a tool magazine component is also arranged to realize the automatic replacement of the machining tool. In the technical scheme, the feeding disc mechanism and the material taking mechanism complete conveying of workpieces, automatic feeding of the workpieces to be processed is achieved, engraving and milling processing is completed through the cutter driving mechanism and the workpiece clamping mechanism, the workpieces after processing are sent back to the original position of the feeding disc through the manipulator assembly, the workpieces are prevented from being placed in a disordered mode, processing precision and production efficiency of products are improved, and the production and processing processes are flexible, simple and rapid. The automatic feeding device realizes automatic feeding of workpieces to be processed, reduces manual operation, improves production efficiency and operation safety, and has higher productivity.

Description

CNC four-axis automatic feeding engraving and milling machine for medical industry

Technical Field

The invention relates to the technical field of numerical control machine tools, in particular to a CNC four-axis automatic feeding engraving and milling machine for the medical industry.

Background

The numerical control machine tool is a short name of a numerical control machine tool (CNC), and is an automatic machine tool provided with a program control system. The control system sends out various control signals to control the action of the machine tool, and parts are automatically machined according to the shape and the size required by the drawing. The numerical control machine tool well solves the problem of machining of complex, precise, small-batch and various parts, is a flexible and high-efficiency automatic machine tool, represents the development direction of the control technology of modern machine tools, and is typical electromechanical integrated equipment.

The medical product has small volume and high precision requirement, for example, the diameter of a titanium column in a medical implant is only about 10mm, so in order to meet the processing precision requirement, the processing equipment of the medical product is generally complex in structure and large in volume. Meanwhile, as the volume of the medical product is small, the clamping is inconvenient, and errors are easily caused during feeding and discharging.

Disclosure of Invention

In view of the above, there is a need for a CNC four-axis automatic feeding engraving and milling machine for medical industry, which has a compact overall structure and can perform accurate feeding.

A CNC four-axis automatic feeding engraving and milling machine for medical industry comprises a workbench, an automatic feeding device and a four-axis machining device, wherein the automatic feeding device and the four-axis machining device are arranged on the workbench in parallel; the automatic feeding device comprises a feeding disc mechanism and a material taking mechanism, the feeding disc mechanism is used for placing the workpieces to be processed, and the material taking mechanism is used for grabbing and conveying the workpieces to be processed; the material taking mechanism is used for grabbing the workpiece to be machined from the material feeding disc mechanism, then moving and placing the workpiece in the workpiece clamping mechanism, and the four-axis machining device is used for engraving and milling the workpiece to be machined.

Preferably, the workstation includes material loading station and processing station, material loading tray mechanism sets up in the material loading station, four-axis processingequipment sets up in the processing station, extracting mechanism includes manipulator subassembly and material loading arm subassembly, the manipulator subassembly is located the one end of material loading arm subassembly towards the processing station, and move under the drive of material loading arm subassembly, the manipulator subassembly with material loading arm subassembly snatchs and drives and wait to process the work piece and remove to the processing station from the material loading station.

Preferably, the feeding arm assembly comprises a fixed mounting part, an extension moving part, an extension motor, an extension driving wheel and an extension driven wheel, the fixed mounting part is connected with the extension moving part through a rail in a sliding manner, the extension motor is used for driving the extension driving wheel to rotate, the extension driving wheel and the extension driven wheel are driven through a rack, a rack moving block is fixedly arranged on the extension moving part, the rack moving block is buckled on the rack, and the rack moving block drives the extension moving part to move synchronously along with the movement of the rack.

Preferably, the feeding arm assembly further comprises an extension limiting block, the rack is wound on the outer sides of the extension driving wheel and the extension driven wheel, the extension limiting block is arranged in a space surrounded by the extension driving wheel, the extension driven wheel and the rack, and the distance between the extension limiting block and the rack is smaller than the thickness of the rack moving block.

Preferably, the manipulator assembly comprises a pressing module and a grabbing module, the grabbing module is arranged at the tail end of the pressing module and drives the grabbing module to move up and down, and the grabbing module is used for clamping a workpiece to be machined; the downward pressing module comprises a downward pressing fixed part, a downward pressing movable part and a downward pressing cylinder, the downward pressing fixed part is fixedly arranged on the extending movable part, the downward pressing movable part is connected with the downward pressing fixed part in a sliding mode through a downward pressing sliding rail, and the downward pressing cylinder pushes the downward pressing movable part to move up and down along the downward pressing sliding rail; the grabbing module comprises a pneumatic finger and a first clamp cylinder, the pneumatic finger is fixedly installed on the downward pressing moving part and comprises a plurality of first pneumatic clamps, and the first clamp cylinder is used for driving the first pneumatic clamps to open and close.

Preferably, the charging tray mechanism comprises a charging tray and a charging tray driving motor, and the charging tray is arranged at the top end of the charging tray driving motor and driven by the charging tray driving motor to rotate; the material tray comprises a plurality of first workpiece clamps which are regularly arranged, and the first workpiece clamps are used for fixedly placing workpieces to be machined and machined workpieces.

Preferably, the device mounting rack further comprises a device mounting rack, wherein the device mounting rack comprises a cross beam and stand columns arranged at two ends of the cross beam; the cutter driving mechanism comprises an X-axis module and a Z-axis module which are perpendicular to each other, the X-axis module is fixedly mounted on the beam, the Z-axis module is slidably mounted on the X-axis module, the machining cutter is arranged at the tail end of the Z-axis module, the X-axis module is used for the Z-axis module and the machining cutter to move horizontally, and the Z-axis module is used for the machining cutter to move vertically.

Preferably, the workpiece clamping mechanism comprises a Y-axis module, a B-axis module and a workpiece processing platform, the Y-axis module is arranged below the equipment mounting frame and is arranged to be perpendicular to the X-axis module and the Z-axis module in pairs, and the Y-axis module is used for driving the B-axis module to move horizontally and is perpendicular to the moving direction of the X-axis module; the workpiece processing platform is arranged at the front end of the B-axis module, and the B-axis module is used for driving the workpiece processing platform to swing by taking the Y-axis direction as an axis.

Preferably, the workpiece processing platform comprises a second pneumatic clamp and a second clamp cylinder, the second pneumatic clamp is arranged at the top end of the second clamp cylinder, and the second clamp cylinder is used for driving the second pneumatic clamp to open and close so as to clamp the workpiece to be processed.

Preferably, still include the tool magazine subassembly, the tool magazine subassembly pass through tool magazine fixed plate fixed mounting in on equipment fixing frame's the stand, the tool magazine subassembly includes tool magazine servo motor, tool magazine swiveling wheel, tool magazine bottom plate and rotatory blade disc, rotatory blade disc with tool magazine servo motor, tool magazine swiveling wheel install respectively in the both sides of tool magazine bottom plate, the tool magazine swiveling wheel with rotatory blade disc fixed connection, tool magazine servo motor passes through the hold-in range and drives the tool magazine swiveling wheel rotates, the tool magazine swiveling wheel drives rotatory blade disc rotates, a plurality of jack catchs are installed to rotatory blade disc, and is a plurality of the jack catch set up in with the centre of a circle of rotatory blade disc is on the same circumference in the centre of a circle, placed on the jack catch machining tool.

In the CNC four-axis automatic feeding engraving and milling machine used in the medical industry, workpieces to be machined are placed on the material feeding disc mechanism, and the workpieces to be machined are sequentially grabbed by the material fetching mechanism and are conveyed to the workpiece clamping mechanism; the workpiece clamping mechanism is arranged below the cutter driving mechanism, and the cutter driving mechanism drives the processing cutter to perform engraving and milling processing on a workpiece to be processed; and the tool magazine assembly is further arranged on one side of the tool driving mechanism so as to realize automatic replacement of the machining tool. In the technical scheme, the feeding disc mechanism and the material taking mechanism complete conveying of the workpiece to be machined, automatic feeding of the workpiece to be machined is achieved, then engraving and milling machining is completed through the cutter driving mechanism and the workpiece clamping mechanism, the workpiece after machining is completed is sent back to the original position of the feeding disc through the manipulator assembly, the workpiece is prevented from being placed in a disordered mode, machining precision and production efficiency of products are improved, and the production and machining process is flexible, simple and rapid. Meanwhile, the automatic feeding device realizes automatic feeding of the workpiece to be processed, reduces manual operation, improves production efficiency and operation safety, and has higher productivity. Simultaneously the tool magazine subassembly is located one side of equipment fixing frame has realized the automatic change of cutter, makes simultaneously CNC lathe compact structure, reduced production facility's area, practiced thrift manufacturing cost. The product of the invention has simple structure, easy production, low cost and convenient popularization.

Drawings

Fig. 1 is a schematic structural diagram of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an automatic feeding device of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the present invention.

Fig. 3 is a first structural schematic diagram of a material taking mechanism of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a material taking mechanism of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a charging tray mechanism of a CNC four-axis automatic feeding engraving and milling machine for the medical industry according to an embodiment of the invention.

Fig. 6 is a schematic structural diagram of a four-axis machining device of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the invention.

Fig. 7 is a schematic structural diagram of a cutter driving mechanism of a CNC four-axis automatic feeding engraving and milling machine used in the medical industry according to an embodiment of the invention.

Fig. 8 is a schematic structural diagram of a workpiece clamping mechanism of a CNC four-axis automatic feeding engraving and milling machine in the medical industry according to an embodiment of the invention.

Fig. 9 is a schematic structural diagram of a tool magazine assembly of the CNC four-axis automatic feed engraving and milling machine for the medical industry according to the embodiment of the present invention.

Detailed Description

The present embodiment is exemplified by a CNC four-axis automatic feeding engraving and milling machine used in the medical industry, and the present invention will be described in detail with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, a CNC four-axis automatic feeding engraving and milling machine 100 for medical industry according to an embodiment of the present invention is shown, including a workbench 10, and an automatic feeding device 20 and a four-axis machining device 30 which are arranged on the workbench 10 in parallel, where the four-axis machining device 30 includes a tool driving mechanism 31 and a workpiece clamping mechanism 32, the tool driving mechanism 31 is configured to drive a machining tool 313 to work, and the workpiece clamping mechanism 32 is configured to clamp and rotate a workpiece to be machined; the automatic feeding device 20 comprises a feeding tray mechanism 21 and a material taking mechanism 24, the material taking mechanism 24 is arranged above the feeding tray mechanism 21, the feeding tray mechanism 21 is used for placing workpieces to be processed, and the material taking mechanism 24 is used for grabbing and conveying the workpieces to be processed; the material taking mechanism 24 picks the workpiece to be machined from the material feeding disc mechanism 21, moves and places the workpiece in the workpiece clamping mechanism 32, and the four-axis machining device 30 realizes engraving, milling and machining of the workpiece to be machined.

Preferably, the workbench 10 includes a feeding station and a processing station, the feeding disc mechanism 21 is disposed on the feeding station, the four-axis processing device is disposed on the processing station, the material taking mechanism 24 includes a manipulator assembly 25 and a feeding arm assembly 26, the manipulator assembly 25 is disposed at one end of the feeding arm assembly 26 facing the processing station, and is driven by the feeding arm assembly 26 to move, and the manipulator assembly 25 and the feeding arm assembly 26 grab and drive a workpiece to be processed to move from the feeding station to the processing station.

Preferably, referring to fig. 2, 3 and 4, the feeding arm assembly 26 includes a fixed mounting member 261, an extension movable member 262, an extension motor 264, an extension driving wheel 265 and an extension driven wheel 266, the fixed mounting member 261 and the extension movable member 262 are slidably connected through a rail, the extension motor 264 is configured to drive the extension driving wheel 265 to rotate, the extension driving wheel 265 and the extension driven wheel 266 are driven through a rack 267, a rack moving block 263 is fixedly disposed on the extension movable member 262, the rack moving block 263 is fastened to the rack 267, and the rack moving block 263 drives the extension movable member 262 to move synchronously with the movement of the rack 267.

Specifically, the extension driving wheel 265 and the extension driven wheel 266 are disposed on the fixed mounting member 261, and a rack 267 is disposed around the extension driving wheel 265 and the extension driven wheel 266, and the driving wheel drives the extension driven wheel 266 to rotate through the rack 267.

Specifically, the bottom surface of the rack moving block 263 has a plurality of protruding teeth, the teeth on the bottom surface of the rack moving block 263 have the same interval as the teeth of the rack 267, the teeth on the bottom surface of the rack moving block 263 are engaged with the teeth of the rack 267, so that the rack moving block 263 is fastened to the rack 267, and the rack moving block 263 and the extendable moving member 262 are integrally formed and move under the driving of the rack 267.

Preferably, the feeding arm assembly 26 further includes an extending limiting block 268, the rack 267 is disposed around the outer sides of the extending driving wheel 265 and the extending driven wheel 266, the extending limiting block 268 is disposed in a space surrounded by the extending driving wheel 265, the extending driven wheel 266 and the rack 267, and a distance between the extending limiting block 268 and the rack 267 is smaller than a thickness of the rack moving block 263.

Specifically, in this embodiment, in a space surrounded by the extending driving wheel 265, the extending driven wheel 266, and the rack 267, the rack moving block 263 is engaged with the rack 267 on one side and moves along with the rack 267, the extending limiting block 268 is disposed at one end of the four-axis machining device 30 and is close to the rack 267 on which the rack moving block 263 is disposed, and when the rack moving block 263 moves toward the four-axis machining device 30, the extending limiting block 268 acts as a limiting function on the rack moving block 263 and the extending movable member 262.

Preferably, the manipulator assembly 25 comprises a pressing module and a grabbing module, the grabbing module is arranged at the tail end of the pressing module, the pressing module drives the grabbing module to move up and down, and the grabbing module is used for clamping a workpiece to be processed; the downward pressing module comprises a downward pressing fixed part 251, a downward pressing movable part 252 and a downward pressing air cylinder 253, the downward pressing fixed part 251 is fixedly arranged on the extending movable part 262, the downward pressing movable part 252 is in sliding connection with the downward pressing fixed part 251 through a downward pressing sliding rail, and the downward pressing air cylinder 253 pushes the downward pressing movable part 252 to move up and down along the downward pressing sliding rail; the grabbing module comprises a pneumatic finger 254 and a first clamp air cylinder 255, the pneumatic finger 254 is fixedly mounted on the lower pressing movable piece 252, the pneumatic finger 254 comprises a plurality of first pneumatic clamps, and the first clamp air cylinder 255 is used for driving the first pneumatic clamps to open and close.

Specifically, in the present embodiment, the pneumatic finger 254 includes a plurality of first pneumatic clamps moving toward each other, and the ends of the first pneumatic clamps have arc-shaped grooves, and when the plurality of first pneumatic clamps are closed, the workpiece to be machined is clamped in the arc-shaped grooves.

Specifically, the down-pressure cylinder 253 comprises a first down-pressure cylinder and a second down-pressure cylinder, the first down-pressure cylinder and the second down-pressure cylinder control the two-stage movement of the down-pressure moving part 252, wherein the second down-pressure cylinder has a lower down-pressure speed and controls the down-pressure moving part 252 to be slowly pressed down.

Preferably, referring to fig. 5, the tray loading mechanism 21 includes a tray 22 and a tray driving motor 23, and the tray 22 is disposed at the top end of the tray driving motor 23 and driven by the tray driving motor 23 to rotate; the tray 22 comprises a plurality of regularly arranged first workpiece clamps 221, and the first workpiece clamps 221 are used for fixedly placing workpieces to be machined and machined workpieces.

Specifically, in this embodiment, the tray 22 is a circular disc, a plurality of workpieces to be processed are arranged on the tray 22 at equal intervals in a plurality of concentric circles, and the tray driving motor 23 drives the tray 22 to rotate, so as to sequentially move the workpieces to be processed on the tray 22 to the material taking mechanism 24.

Specifically, the rotating circular tray 22 conveys the workpieces to be processed to the material taking mechanism 24, so that the distance between each workpiece to be processed and the material taking mechanism 24 is equal, and the structure of the material taking mechanism 24 is simplified, and therefore, in other embodiments, the workpieces to be processed can also be conveyed to the material taking mechanism 24 in a conveyor belt manner.

Preferably, the equipment mounting rack 40 is further included, and the equipment mounting rack 40 comprises a cross beam and upright columns arranged at two ends of the cross beam; referring to fig. 6, 7 and 8, the tool driving mechanism 31 includes an X-axis module 311 and a Z-axis module 312, which are perpendicular to each other, the X-axis module 311 is fixedly mounted on the cross beam, the Z-axis module 312 is slidably mounted on the X-axis module 311, the machining tool 313 is disposed at the end of the Z-axis module 312, the X-axis module 311 is used for the horizontal movement of the Z-axis module 312 and the machining tool 313, and the Z-axis module 312 is used for the vertical movement of the machining tool 313.

Specifically, the tool driving mechanism 31 includes a horizontally disposed X-axis module 311 and a vertically disposed Z-axis module 312, where the X-axis module 311 includes an X-axis servo motor and an X-axis ball screw, the X-axis ball screw is horizontally installed on the equipment support, and the X-axis servo motor drives the Z-axis module 312 to horizontally move left and right along the X-axis ball screw.

The Z-axis module comprises a spindle connecting plate, a Z-axis fixing part, a Z-axis servo motor and a Z-axis ball screw, the Z-axis fixing part is arranged on the X-axis ball screw and moves along the X-axis ball screw, the vertical direction of the Z-axis ball screw is arranged on the Z-axis fixing part, the spindle connecting plate is arranged on the Z-axis ball screw, and the Z-axis servo motor drives the spindle connecting plate to move up and down along the Z-axis ball screw.

The tool driving mechanism 31 further comprises a spindle 314, the spindle 314 is vertically arranged on the spindle connecting plate, the spindle 314 comprises a spindle rotating motor and a tool mounting seat, the tool mounting seat is arranged at the tail end of the spindle rotating motor and is controlled by the spindle rotating motor to rotate, and the machining tool 313 is arranged on the tool mounting seat.

Preferably, the workpiece clamping mechanism 32 includes a Y-axis module 321, a B-axis module 322, and a workpiece processing platform 323, where the Y-axis module 321 is disposed below the equipment mounting rack 40, and is disposed two by two perpendicular to each other between the X-axis module 311 and the Z-axis module 312, and the Y-axis module 321 is configured to drive the B-axis module 322 to move horizontally, and is perpendicular to the moving direction of the X-axis module 311; the workpiece processing platform 323 is arranged at the front end of the B-axis module 322, and the B-axis module 322 is used for driving the workpiece processing platform 323 to swing by taking the Y-axis direction as an axis.

Specifically, the equipment mounting frame 40 is preferably a portal frame, the cutter driving mechanism 31 is arranged on the equipment mounting frame 40, the workpiece clamping mechanism 32 is arranged below the equipment mounting frame 40 and fixedly arranged on the workbench 10, and all the components are exquisite in layout, compact in structure and small in occupied space

Specifically, the Y-axis module 321 includes a Y-axis servo motor and a Y-axis ball screw, the Y-axis ball screw is horizontally installed on the worktable 10 and is perpendicular to the installation direction of the X-axis ball screw, and the Y-axis servo motor drives the B-axis module 322 and the workpiece processing platform 323 to move back and forth.

The B-axis module 322 comprises a platform connecting piece, a B-axis rotating motor and a B-axis fixing piece, and the B-axis fixing piece is arranged on the Y-axis ball screw and moves back and forth along the Y-axis ball screw; the B-axis rotating motor is fixedly arranged on the B-axis fixing piece and moves back and forth along with the B-axis fixing piece, the platform connecting piece is arranged at the tail end of the B-axis rotating motor, one end of the platform connecting piece is connected to the tail end of the B-axis rotating motor, the workpiece machining platform 323 is arranged at the other end of the platform connecting piece, and the B-axis rotating motor drives the platform connecting piece and the workpiece machining platform 323 to rotate by taking the Y-axis direction as an axis.

Specifically, in this embodiment, the B-axis module 322 drives the workpiece processing platform 323 to perform cradle-type swing at a predetermined angle, and the swing angle of the workpiece processing platform 323 is plus or minus 110 degrees.

Preferably, the workpiece processing platform 323 comprises a second pneumatic clamp and a second clamp cylinder, the second pneumatic clamp is arranged at the top end of the second clamp cylinder, and the second clamp cylinder is used for driving the second pneumatic clamp to open and close so as to clamp the workpiece to be processed.

Specifically, the second pneumatic clamp comprises a plurality of arc-shaped clamps moving in opposite directions, and the second clamp cylinder drives the arc-shaped clamps to move in opposite directions so as to clamp the workpiece to be machined.

In this embodiment, the structure of the second pneumatic clamp is the same as that of the pneumatic finger, and in other embodiments, the second pneumatic clamp and the pneumatic finger may adopt different structures according to the shape of the workpiece to be processed.

Specifically, in this embodiment, the robot assembly 25 picks the workpiece to be machined from the tray 22, the feeding arm assembly 26 moves the robot assembly 25 to a machining station, the robot assembly 25 places the workpiece to be machined on the workpiece machining platform 323, and the feeding arm assembly 26 moves the robot assembly 25 to the feeding station. After the workpiece is processed, the feeding arm assembly 26 moves the manipulator assembly 25 to a processing station and grabs the processed workpiece on the workpiece processing platform 323, the feeding arm assembly 26 moves the manipulator assembly 25 to the feeding station, and the manipulator assembly 25 puts the processed workpiece back to the original position so as to prevent the workpiece from being placed in disorder.

Preferably, please refer to fig. 9, further including a tool magazine assembly 50, wherein the tool magazine assembly 50 is fixedly mounted on the column of the equipment mounting frame 40 through a tool magazine fixing plate 51, the tool magazine assembly 50 includes a tool magazine servo motor 52, a tool magazine rotating wheel 53, a tool magazine base plate 54 and a rotary tool disc 55, the tool magazine servo motor 52 and the tool magazine rotating wheel 53 are respectively mounted on two sides of the tool magazine base plate 54, the tool magazine rotating wheel 53 is fixedly connected with the rotary tool disc 55, the tool magazine servo motor 52 drives the tool magazine rotating wheel 53 to rotate through a synchronous belt, the tool magazine rotating wheel 53 drives the rotary tool disc 55 to rotate, the rotary tool disc 55 is provided with a plurality of jaws 551, the jaws 551 are disposed on the same circumference using the center of the circle of the rotary tool disc 55 as the center of the circle, and the processing tools 313 are disposed on the jaws 551.

Specifically, rotatory blade disc 55 outside cover is equipped with the tool magazine cover, the tool magazine covers and has the tool magazine fly leaf, the tool magazine fly leaf cover in the opening part of tool magazine cover is opened when needing the tool changing the tool magazine fly leaf, tool magazine servo motor 52 with the tool magazine swiveling wheel 53 is rotatory blade disc 55 rotates the cutter of required change extremely the opening part of tool magazine cover.

Specifically, the workbench 10 is provided with a waste collecting hole 11, the waste collecting hole 11 is a funnel-type lower counter bore, and the waste collecting hole 11 is arranged below the workpiece processing platform 323 and is located at a processing station of the workbench 10. When the workpiece is machined, the scraps fall into the scrap collecting hole 11, and the inner side wall of the scrap collecting hole 11 slides to the bottom of the scrap collecting hole 11, so that the recovery rate of the scraps is improved.

In the CNC four-axis automatic feeding engraving and milling machine 100 used in the medical industry, the workpiece to be machined is placed on the feeding tray mechanism 21, and the workpiece to be machined is sequentially grabbed by the material fetching mechanism 24 and is conveyed to the workpiece clamping mechanism 32; the workpiece clamping mechanism 32 is arranged below the cutter driving mechanism 31, and the cutter driving mechanism 31 drives the processing cutter 313 to perform engraving and milling processing on a workpiece to be processed; the tool magazine assembly 50 is further disposed at one side of the tool driving mechanism 31 to realize automatic replacement of the machining tool 313. In the technical scheme, the feeding disc mechanism 21 and the material taking mechanism 24 complete the conveying of the workpieces to be processed, so that the workpieces to be processed are automatically fed, the cutter driving mechanism 31 and the workpiece clamping mechanism 32 complete engraving and milling, the workpieces after processing are fed back to the feeding disc 22 in situ through the manipulator assembly 25, the workpieces are prevented from being placed in a disordered manner, the processing precision and the production efficiency of products are improved, and the production and processing processes are more flexible, simple and rapid. Meanwhile, the automatic feeding device 20 realizes automatic feeding of workpieces to be processed, reduces manual operation, improves production efficiency and operation safety, and has higher productivity. Meanwhile, the tool magazine assembly 50 is arranged on one side of the equipment mounting frame 40, so that automatic replacement of tools is realized, and meanwhile, the CNC four-shaft automatic feeding engraving and milling machine is compact in structure, reduces the floor area of production equipment and saves production cost. The product of the invention has simple structure, easy production, low cost and convenient popularization.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art will appreciate that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC four-axis automatic feeding engraving and milling machine for medical industry is characterized by comprising a workbench, an automatic feeding device and a four-axis machining device, wherein the automatic feeding device and the four-axis machining device are arranged on the workbench in parallel; the automatic feeding device comprises a feeding disc mechanism and a material taking mechanism, the feeding disc mechanism is used for placing the workpieces to be processed, and the material taking mechanism is used for grabbing and conveying the workpieces to be processed; the material taking mechanism is used for grabbing the workpiece to be machined from the material feeding disc mechanism, then moving and placing the workpiece in the workpiece clamping mechanism, and the four-axis machining device is used for engraving and milling the workpiece to be machined.

2. A CNC four-axis automatic feeding engraving and milling machine for medical industry as recited in claim 1, wherein the workbench comprises a loading station and a processing station, the loading tray mechanism is disposed at the loading station, the four-axis processing device is disposed at the processing station, the material taking mechanism comprises a manipulator assembly and a loading arm assembly, the manipulator assembly is disposed at one end of the loading arm assembly facing the processing station and moves under the driving of the loading arm assembly, and the manipulator assembly and the loading arm assembly grab and drive the workpiece to be processed to move from the loading station to the processing station.

3. The CNC four-axis automatic feeding engraving and milling machine for the medical industry of claim 2, wherein the feeding arm assembly comprises a fixed mounting part, an extension moving part, an extension motor, an extension driving wheel and an extension driven wheel, the fixed mounting part and the extension moving part are connected through a rail in a sliding mode, the extension motor is used for driving the extension driving wheel to rotate, the extension driving wheel and the extension driven wheel are in transmission through a rack, a rack moving block is fixedly arranged on the extension moving part, the rack moving block is buckled on the rack, and the rack moving block drives the extension moving part to move synchronously along with the movement of the rack.

4. The CNC four-axis automatic feed engraving and milling machine for the medical industry of claim 3, wherein the feeding arm assembly further comprises an extension limiting block, the rack is arranged around the outer sides of the extension driving wheel and the extension driven wheel, the extension limiting block is arranged in a space defined by the extension driving wheel, the extension driven wheel and the rack, and the distance between the extension limiting block and the rack is smaller than the thickness of the rack moving block.

5. A CNC four-axis automatic feeding engraving and milling machine for medical industry as recited in claim 3, wherein the robot assembly comprises a pressing module and a grabbing module, the grabbing module is arranged at the end of the pressing module, the pressing module drives the grabbing module to move up and down, and the grabbing module is used for clamping a workpiece to be processed; the pressing module comprises a pressing fixing part, a pressing moving part and a pressing cylinder, the pressing fixing part is fixedly arranged on the extending moving part, the pressing moving part is connected with the pressing fixing part in a sliding mode through a pressing sliding rail, and the pressing cylinder pushes the pressing moving part to move up and down along the pressing sliding rail; the grabbing module comprises a pneumatic finger and a first clamp cylinder, the pneumatic finger is fixedly installed on the downward pressing moving part and comprises a plurality of first pneumatic clamps, and the first clamp cylinder is used for driving the first pneumatic clamps to open and close.

6. A CNC four-axis automatic feeding engraving and milling machine for medical industry as recited in claim 1, wherein the tray loading mechanism comprises a tray and a tray driving motor, the tray is disposed on top of the tray driving motor and driven by the tray driving motor to rotate; the material tray comprises a plurality of first workpiece clamps which are regularly arranged, and the first workpiece clamps are used for fixedly placing workpieces to be machined and machined workpieces.

7. A CNC four-axis automatic feed engraving and milling machine for medical industry as set forth in claim 1, further comprising an equipment mounting rack, said equipment mounting rack comprising a cross beam and columns disposed at both ends of said cross beam; the cutter driving mechanism comprises an X-axis module and a Z-axis module which are perpendicular to each other, the X-axis module is fixedly mounted on the beam, the Z-axis module is slidably mounted on the X-axis module, the machining cutter is arranged at the tail end of the Z-axis module, the X-axis module is used for the Z-axis module and the machining cutter to move horizontally, and the Z-axis module is used for the machining cutter to move vertically.

8. A CNC four-axis automatic feed engraving and milling machine for medical industry as claimed in claim 7, wherein said workpiece clamping mechanism comprises a Y-axis module, a B-axis module and a workpiece processing platform, said Y-axis module is arranged below said equipment mounting rack and is arranged vertically to each other two by two between said X-axis module and said Z-axis module, said Y-axis module is used for driving said B-axis module to move horizontally and is perpendicular to the moving direction of said X-axis module; the workpiece processing platform is arranged at the front end of the B-axis module, and the B-axis module is used for driving the workpiece processing platform to swing by taking the Y-axis direction as an axis.

9. The CNC four-axis automatic feeding engraving and milling machine for the medical industry of claim 8, wherein the workpiece processing platform comprises a second pneumatic clamp and a second clamp cylinder, the second pneumatic clamp is arranged at the top end of the second clamp cylinder, and the second clamp cylinder is used for driving the second pneumatic clamp to open and close so as to clamp the workpiece to be processed.

10. The CNC four-axis automatic feed engraving and milling machine for medical industry of claim 7, further comprising a tool magazine assembly, wherein the tool magazine assembly is fixedly installed on the column of the equipment mounting frame through a tool magazine fixing plate, the tool magazine assembly comprises a tool magazine servo motor, a tool magazine rotating wheel, a tool magazine bottom plate and a rotary cutter head, the rotary cutter head and the tool magazine servo motor and the tool magazine rotating wheel are respectively installed on two sides of the tool magazine bottom plate, the tool magazine rotating wheel is fixedly connected with the rotary cutter head, the tool magazine servo motor drives the tool magazine rotating wheel to rotate through a synchronous belt, the tool magazine rotating wheel drives the rotary cutter head to rotate, the rotary cutter head is provided with a plurality of clamping jaws, the clamping jaws are arranged on the same circumference with the center of the rotary cutter head as the center of a circle, and the machining tool is placed on the clamping jaws.