CN117102547A - Machining device and machining process for micro deep holes - Google Patents
Machining device and machining process for micro deep holes Download PDFInfo
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- CN117102547A CN117102547A CN202311158271.5A CN202311158271A CN117102547A CN 117102547 A CN117102547 A CN 117102547A CN 202311158271 A CN202311158271 A CN 202311158271A CN 117102547 A CN117102547 A CN 117102547A
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- 238000003754 machining Methods 0.000 title claims description 33
- 238000012545 processing Methods 0.000 claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 65
- 239000010937 tungsten Substances 0.000 claims abstract description 65
- 229920003023 plastic Polymers 0.000 claims abstract description 30
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 239000004697 Polyetherimide Substances 0.000 claims description 37
- 229920001601 polyetherimide Polymers 0.000 claims description 37
- 238000000227 grinding Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 11
- 238000003801 milling Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000003672 processing method Methods 0.000 description 6
- 238000002224 dissection Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to the technical field of deep hole processing, and discloses a processing device and a processing technology of a micro deep hole, wherein the processing device comprises the following steps: the device comprises a machine base, a driving mechanism, a drill bit seat, a lifting mechanism, a tungsten steel drill bit and a controller, wherein the lifting mechanism is arranged on the machine base; the tungsten steel drill bit comprises a spiral cutter drill body, a drill handle and a drill tip, wherein the drill tip is fixedly connected to the spiral cutter drill body, the drill tip is smoothly transited to the spiral cutter drill body, the other end of the spiral cutter drill body is fixedly connected to the drill handle, the spiral cutter drill body, the drill handle and the drill tip are integrally formed, and the tungsten steel drill bit is used for processing a micro deep hole on a plastic article. The processing technology can realize the processing of the tiny deep holes and the weak burr deep holes of the plastic articles.
Description
Technical Field
The invention relates to the technical field of deep hole machining, in particular to a machining device and a machining process of a micro deep hole.
Background
At present, along with the rapid development of technology, the industry of integrated circuits is more and more vigorous, the integrated circuits pursue micro-nano level so as to have smaller size, and in the production of integrated circuit chips, hundreds of production processes are involved, wherein in the manufacturing and processing of integrated circuits, some plastic products are often used for conducting gas or liquid flow, but as the integrated circuit chips belong to micro-nano micro structures, micro flow guide holes are required, however, the prior art is difficult to meet the requirement of the micro holes, the deep micro holes below 0.3mm cannot be processed, and in the processing of the micro deep holes of plastic products, the deformation of the micro holes, burrs or damaged edges of the inner walls and other phenomena are caused, and the use effect of the flow guide holes is influenced. And the processing tool is easy to damage after a period of processing, so that the processing cannot be continued, and the processing materials, the processing cost and the like are affected.
Machining is generally used for machining of fine deep holes, and is a difficult operation because extremely high pressure and temperature are generated around the main cutting region, which has a great influence on the accuracy of the hole diameter and roundness. The deformation and burr formation of the deep hole can be caused by the defect of machining, and in order to better realize deep hole machining, the influences of deformation, burrs, edge damage or flying chips and chip removal in the machining are required to be overcome.
In view of the above, further improvements in deep hole machining techniques are needed.
Disclosure of Invention
The invention overcomes the problems of large processing difficulty, incomplete processing, easy occurrence of burrs and damaged edges in the hole, deformation of the micro deep hole and the like in the existing processing of the micro deep hole. Through rationalization design of processing the micro deep hole, the complete forming of the deep hole, the burr phenomenon and the edge damage phenomenon can be reduced, and circular processing of the micro deep hole and the like can be realized by adopting a machine base, a driving mechanism, a drill bit base, a lifting mechanism, a tungsten steel drill bit and a controller and combining corresponding processing technologies; the tungsten steel drill bit is adopted and integrally formed, so that the durability of the drill bit, the processing performance of the super-strong drill bit and the like can be realized; the tungsten steel drill bit comprises a spiral flower cutter drill body, a drill handle and a drill tip, and the corresponding specification and size can realize accurate machining and deburring of the micro deep holes; the ultrasonic vibrator is adopted, so that the tungsten steel drill bit can be helpful for drilling holes and removing burrs of plastic articles.
A machining device for a fine deep hole, the machining device comprising: the device comprises a machine base, a driving mechanism, a drill bit seat, a lifting mechanism, a tungsten steel drill bit and a controller, wherein the lifting mechanism is arranged on the machine base, the driving mechanism is arranged on the lifting mechanism and used for driving the driving mechanism to lift, the drill bit seat is arranged at the driving end of the driving mechanism, the tungsten steel drill bit is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism, and the lifting control end of the controller is electrically connected with the control end of the lifting mechanism;
the tungsten steel drill bit comprises a spiral cutter drill body, a drill handle and a drill tip, wherein the drill tip is fixedly connected to the spiral cutter drill body, the drill tip is smoothly transited to the spiral cutter drill body, the other end of the spiral cutter drill body is fixedly connected to the drill handle, the spiral cutter drill body, the drill handle and the drill tip are integrally formed, the drill tip is a drill tip with an angle of 60 degrees or a drill tip with an angle of 90 degrees or a drill tip with an angle of 120 degrees, and the tungsten steel drill bit is used for processing a tiny deep hole on a plastic article.
Further, the driving mechanism comprises a servo motor, the servo motor is installed on the lifting mechanism, and the driving end of the servo motor is provided with the drill bit seat.
Further, the driving mechanism further comprises an ultrasonic vibrator, the ultrasonic vibrator is arranged at the driving end of the servo motor, and the ultrasonic vibrator is connected with the drill bit seat.
Further, the servo motor is selected and integrated with an encoder, the encoder is electrically connected with the controller, the encoder is mutually matched with the controller and controls the feeding speed and feeding of the servo motor to the tungsten steel drill bit, the vibration frequency, the vibration amplitude and the like of the ultrasonic vibrator, and further the processing penetration depth and the like of plastic articles are realized.
Further, the rotating speed of the servo motor is selected to be 16000-35000 revolutions per minute.
Further, the feeding of the servo motor is selected from 200mm to 1600mm.
Further, the cutter feeding amount of the servo motor is selected to be 0.08mm-0.15mm.
Further, the vibration frequency of the ultrasonic vibrator is selected from 20KHz to 30KHz.
Further, the amplitude of the ultrasonic vibrator is selected to be 30-75 μm.
Further, the plastic article is made of Polyetherimide (PEI) or polyether ether ketone (PEEK).
Further, the length of the auger bit body is selected to be 20mm-40mm, and the diameter of the auger bit body is selected to be 0.25mm-0.35mm.
Further, the length of the drill shank is selected to be 35mm-40mm, and the diameter of the drill shank is selected to be 4mm-6mm.
Further, a transition round table piece is arranged at the joint of the spiral flower cutter drill body and the drill handle, and the round table angle of the transition round table piece (namely the included angle between two bevel edges on the central section of the round table) is 85-100 degrees.
Further, the spiral angle of the spiral flower cutter drill body is 30-40 degrees.
Further, a processing technology of the micro deep hole comprises the following steps:
step 1: machining of drill bits
A tungsten steel metal rod is selected and put on a milling and grinding numerical control machine tool to be processed, a diamond grinding wheel on the milling and grinding machine tool is used for integrally forming a drill shank with the length of 35mm-40mm and the diameter of 4mm-6mm, a spiral cutter drill body with the length of 20mm-40mm, the diameter of 0.25mm-0.35mm and the spiral angle of 30-40 DEG, and a joint of the spiral cutter drill body with the round table angle of 85-100 DEG and the drill shank, and a drill tip with the length of 60 DEG or 90 DEG or 120 DEG are processed;
step 2: assembly of processing device
Selecting the tungsten steel drill bit in the step 1, selecting a base, a servo motor, an ultrasonic vibrator, a drill bit seat, a lifting mechanism, the tungsten steel drill bit and a controller, installing the lifting mechanism on the base, installing the servo motor on the lifting mechanism, installing the drill bit seat and the ultrasonic vibrator on the driving end of the servo motor, connecting the ultrasonic vibrator with the drill bit seat, installing the tungsten steel drill bit on the drill bit seat, electrically connecting the control end of the driving mechanism with the control end of the controller, electrically connecting the lifting control end of the controller with the control end of the lifting mechanism, and electrically connecting the encoder with the controller by the servo motor integrated with the servo motor;
step 3: guide hole processing of plastic articles
Selecting the processing device in the step 2, stably placing the plastic article on an objective table on the processing device, and then selecting a first tungsten steel drill bit to drill a guide hole with the depth of 2mm-5mm on the surface of the plastic article;
step 4: adjustment of a processing device
Selecting the processing device in the step 2, adjusting the rotating speed of a servo motor on the processing device to be 16000-35000 revolutions per minute, feeding the servo motor to be 200-1600 mm, discharging the servo motor to be 0.08-0.15 mm, and adjusting the vibration frequency of an ultrasonic vibrator to be 20KHz-30KHz and the vibration amplitude to be 30-75 mu m;
step 5: deep hole processing of plastic articles
Selecting the processing device in the step 4 and the plastic article in the step 3, firmly placing the plastic article on an objective table of the processing device, starting the processing device, continuously drilling a deep hole of 20-40 mm at a guide hole on the plastic article by a second tungsten steel drill, continuously introducing nitrogen into the drill hole for cooling protection in the process, introducing the nitrogen into a hole, further cooling the deep hole, and further processing the deep hole, thereby being more beneficial to removing burrs on the inner wall of the deep hole;
step 6: deep hole detection of plastic articles
And 5, selecting the plastic article in the step, performing deep hole dissection detection and scanning electron microscope detection on the plastic article, and measuring the appearance condition of the inner wall of the deep hole.
Advantageous effects
According to the invention, through reasonable design of processing of the micro deep hole, the complete forming of the micro deep hole, the burr phenomenon and the edge damage phenomenon can be reduced, the circular processing of the micro deep hole and the like can be realized by adopting the machine base, the driving mechanism, the drill bit base, the lifting mechanism, the tungsten steel drill bit and the controller and combining with corresponding processing technologies; the tungsten steel drill bit is adopted and integrally formed, so that the durability of the drill bit, the processing performance of the super-strong drill bit and the like can be realized; the tungsten steel drill bit comprises a spiral flower cutter drill body, a drill handle and a drill tip, and the corresponding specification and size can realize accurate machining and deburring of the micro deep holes; the ultrasonic vibrator is adopted, so that the tungsten steel drill bit can be helpful for drilling holes and removing burrs of plastic articles; the design of the guide hole is added in the process, so that the damage, deformation and the like to the inner wall of the deep hole during deep hole machining can be conveniently and slowly reduced; according to the processing device, through testing of deep holes processed on polyetherimide, under the action of a servo motor with the drilling tip of a tungsten steel drill being at an angle of 90 degrees, 30000 revolutions per minute, 800mm feeding and 0.1mm cutting amount, and under the action of an ultrasonic vibrator with the vibration frequency of 29.8KHz and the vibration amplitude of 75 mu m, the processing device can be used for processing the micro deep holes approximately circularly, and phenomena such as burrs are hardly generated in the holes, so that the processing device is more beneficial to deep hole processing and deburring of polyetherimide materials.
Drawings
Fig. 1 is a schematic structural view of a device for processing a deep hole in a micro-scale according to the present invention.
Fig. 2 is a schematic structural view of a tungsten steel drill bit on a device for processing a micro deep hole according to the present invention.
Fig. 3 is a schematic structural view of a first tungsten steel drill bit on a device for processing a micro deep hole according to the present invention.
Fig. 4 is a schematic structural view of a second tungsten steel drill bit on the device for processing a micro deep hole according to the present invention.
Fig. 5 is an SEM image of a deep hole machined by the machining device and the machining process of the deep hole.
Fig. 6 is a CCD image of a guide hole and a deep hole machined by the machining process of the present invention.
Description of the drawings: 01. a base; 02. a lifting mechanism; 03. tungsten steel drill bit; 04. a driving mechanism; 05. a plastic article; 06. and a stage.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the term "plurality" means two or more. "and/or": the association relationship describing the association object may represent that there are three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
Referring to fig. 1, a processing device for a fine deep hole includes: the device comprises a base 01, a driving mechanism 04, a drill bit seat, a lifting mechanism 02, a tungsten steel drill bit 03 and a controller, wherein the lifting mechanism 02 is arranged on the base 01, the driving mechanism 04 is arranged on the lifting mechanism 02, the lifting mechanism 02 is used for driving the driving mechanism 04 to lift, the drill bit seat is arranged at the driving end of the driving mechanism 04, the tungsten steel drill bit 03 is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism 04, and the lifting control end of the controller is electrically connected with the control end of the lifting mechanism 02;
the tungsten steel drill bit 03 comprises a spiral cutter drill body, a drill handle and a drill tip, wherein the drill tip is fixedly connected to the spiral cutter drill body, the drill tip is smoothly transited to the spiral cutter drill body, the other end of the spiral cutter drill body is fixedly connected to the drill handle, the spiral cutter drill body, the drill handle and the drill tip are integrally formed, and the drill tip is selected from a drill tip with an angle of 60 degrees or a drill tip with an angle of 90 degrees or a drill tip with an angle of 120 degrees.
The driving mechanism 04 comprises a servo motor, the servo motor is arranged on the lifting mechanism 02, and a drill bit seat is arranged at the driving end of the servo motor; the driving mechanism 04 also comprises an ultrasonic vibrator, wherein the ultrasonic vibrator is arranged at the driving end of the servo motor and is connected with the drill bit seat; the servo motor is selected and integrated with a coder, the coder is electrically connected with the controller, the coder is mutually matched with the controller and controls the feeding speed and feeding of the tungsten steel drill 03, the vibration frequency and the vibration amplitude of the ultrasonic vibrator and the like of the servo motor, and further the processing penetration depth and the like of the plastic article 05 on the objective table 06 are realized.
In a first embodiment, based on the description of fig. 1, the following processing method is performed, and the specific processing method includes the following steps:
step 1: machining of drill bits
Referring to fig. 2 (a), 3 and 4, a tungsten steel metal rod is selected, put on a milling and grinding numerical control machine tool for processing, and a first tungsten steel drill 03, which has a drill shank with a length of 40mm and a diameter of 4mm, a helical cutter drill body with a length of 12mm, a diameter of 0.25mm and a helical angle of 40 degrees, and a joint of the helical cutter drill body and the drill shank with a round table angle α1=90°, and a drill tip with α2=60°, is integrally formed by a diamond grinding wheel on the milling and grinding machine tool; machining a second tungsten steel drill 03 with a drill shank 40mm long and 4mm in diameter, a helical burr shank 30mm long, 0.3mm in diameter and 40 ° helical angle, a connection of the helical burr shank and the drill shank at a truncated cone angle α1=90°, and a drill tip α2=60°;
step 2: assembly of processing device
Selecting the tungsten steel drill bit 03 in the step 1, and selecting a base 01, a servo motor, an ultrasonic vibrator, a drill bit seat, a lifting mechanism 02, the tungsten steel drill bit 03 and a controller, wherein the lifting mechanism 02 is arranged on the base 01, the servo motor is arranged on the lifting mechanism 02, the drill bit seat and the ultrasonic vibrator are arranged at the driving end of the servo motor, the ultrasonic vibrator is connected with the drill bit seat, the tungsten steel drill bit 03 is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism 04, the lifting control end of the controller is electrically connected with the control end of the lifting mechanism 02, the servo motor is integrated with an encoder, and the encoder is electrically connected with the controller;
step 3: guide hole processing of polyetherimide
Selecting the processing device in the step 2, stably placing polyetherimide on an objective table 06 on the processing device, then selecting a first tungsten steel drill 03, drilling a guide hole with the depth of 2mm-5mm on the surface of the polyetherimide, and referring to fig. 6, wherein fig. 6-A3 are CCD images of the guide hole, and fig. 6-B3 are CCD images of a deep hole, and the deep hole can be conveniently processed through the guide of the guide hole;
step 4: adjustment of a processing device
Selecting the processing device in the step 2, adjusting the rotating speed of a servo motor on the processing device to 30000 revolutions per minute, wherein the feeding of the servo motor is 800mm, the cutter feeding amount of the servo motor is 0.1mm, and adjusting the vibration frequency of an ultrasonic vibrator to 29.8KHz and the amplitude of the ultrasonic vibrator to 75 mu m;
step 5: deep hole machining of polyetherimide
Selecting the processing device in the step 4 and the polyetherimide in the step 3, firmly placing the polyetherimide on an objective table 06 of the processing device, starting the processing device, continuously drilling a deep hole of 25mm at a guide hole on the polyetherimide by a second tungsten steel drill bit 03, and continuously introducing nitrogen for cooling protection in the process;
step 6: deep hole detection of polyetherimide
And 5, selecting the polyetherimide in the step, performing deep hole dissection detection and scanning electron microscope detection on the polyetherimide, and measuring the appearance condition of the inner wall of the deep hole.
In the second embodiment, based on the description of fig. 1, the following processing method is performed, and the specific processing method includes the following steps:
step 1: machining of drill bits
Referring to fig. 2 (B), 3 and 4, a tungsten steel metal rod is selected, put on a milling and grinding numerical control machine tool for processing, and a first tungsten steel drill 03, which has a drill shank with a length of 40mm and a diameter of 4mm, a spiral cutter drill body with a length of 12mm, a diameter of 0.25mm and a spiral angle of 40 degrees, and a joint of the spiral cutter drill body and the drill shank with a round table angle β1=90°, and a drill tip with β2=90°, are integrally formed by a diamond grinding wheel on the milling and grinding machine tool; machining a second tungsten steel drill 03 with a drill shank 40mm long and 4mm in diameter, a helical burr shank 30mm long, 0.3mm in diameter and 40 ° helical angle, a connection of the helical burr shank and the drill shank at a truncated cone angle β1=90°, and a drill tip β2=90°;
step 2: assembly of processing device
Selecting the tungsten steel drill bit 03 in the step 1, and selecting a base 01, a servo motor, an ultrasonic vibrator, a drill bit seat, a lifting mechanism 02, the tungsten steel drill bit 03 and a controller, wherein the lifting mechanism 02 is arranged on the base 01, the servo motor is arranged on the lifting mechanism 02, the drill bit seat and the ultrasonic vibrator are arranged at the driving end of the servo motor, the ultrasonic vibrator is connected with the drill bit seat, the tungsten steel drill bit 03 is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism 04, the lifting control end of the controller is electrically connected with the control end of the lifting mechanism 02, the servo motor is integrated with an encoder, and the encoder is electrically connected with the controller;
step 3: guide hole processing of polyetherimide
Selecting the processing device in the step 2, stably placing polyetherimide on an objective table 06 on the processing device, then selecting a first tungsten steel drill 03, drilling a guide hole with the depth of 2mm-5mm on the surface of the polyetherimide, and referring to fig. 6, wherein fig. 6-A3 are CCD images of the guide hole, and fig. 6-B3 are CCD images of a deep hole, and the deep hole can be conveniently processed through the guide of the guide hole;
step 4: adjustment of a processing device
Selecting the processing device in the step 2, adjusting the rotating speed of a servo motor on the processing device to 30000 revolutions per minute, wherein the feeding of the servo motor is 800mm, the cutter feeding amount of the servo motor is 0.1mm, and adjusting the vibration frequency of an ultrasonic vibrator to 29.8KHz and the amplitude of the ultrasonic vibrator to 75 mu m;
step 5: deep hole machining of polyetherimide
Selecting the processing device in the step 4 and the polyetherimide in the step 3, firmly placing the polyetherimide on an objective table 06 of the processing device, starting the processing device, continuously drilling a deep hole of 25mm at a guide hole on the polyetherimide by a second tungsten steel drill bit 03, and continuously introducing nitrogen for cooling protection in the process;
step 6: deep hole detection of polyetherimide
And 5, selecting the polyetherimide in the step, performing deep hole dissection detection and scanning electron microscope detection on the polyetherimide, and measuring the appearance condition of the inner wall of the deep hole.
In the third embodiment, based on the description of fig. 1, the following processing method is performed, and the specific processing method includes the following steps:
step 1: machining of drill bits
Referring to fig. 2 (C), 3 and 4, a tungsten steel metal rod is selected, put on a milling and grinding numerical control machine tool for processing, and a first tungsten steel drill 03, which has a drill shank with a length of 40mm and a diameter of 4mm, a helical cutter drill body with a length of 12mm, a diameter of 0.25mm and a helical angle of 40 degrees, and a joint of the helical cutter drill body and the drill shank with a round table angle γ1=90°, and a drill tip with γ2=120°, is integrally formed by a diamond grinding wheel on the milling and grinding machine tool; machining a second tungsten steel drill 03 with a drill shank 40mm long and 4mm in diameter, a helical burr shank 30mm long, 0.3mm in diameter and 40 ° helical angle, and a connection of the helical burr shank and the drill shank at a truncated cone angle γ1=90°, and a drill tip γ2=120°;
step 2: assembly of processing device
Selecting the tungsten steel drill bit 03 in the step 1, and selecting a base 01, a servo motor, an ultrasonic vibrator, a drill bit seat, a lifting mechanism 02, the tungsten steel drill bit 03 and a controller, wherein the lifting mechanism 02 is arranged on the base 01, the servo motor is arranged on the lifting mechanism 02, the drill bit seat and the ultrasonic vibrator are arranged at the driving end of the servo motor, the ultrasonic vibrator is connected with the drill bit seat, the tungsten steel drill bit 03 is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism 04, the lifting control end of the controller is electrically connected with the control end of the lifting mechanism 02, the servo motor is integrated with an encoder, and the encoder is electrically connected with the controller;
step 3: guide hole processing of polyetherimide
Selecting the processing device in the step 2, stably placing polyetherimide on an objective table 06 on the processing device, then selecting a first tungsten steel drill 03, drilling a guide hole with the depth of 2mm-5mm on the surface of the polyetherimide, and referring to fig. 6, wherein fig. 6-A3 are CCD images of the guide hole, and fig. 6-B3 are CCD images of a deep hole, and the deep hole can be conveniently processed through the guide of the guide hole;
step 4: adjustment of a processing device
Selecting the processing device in the step 2, adjusting the rotating speed of a servo motor on the processing device to 30000 revolutions per minute, wherein the feeding of the servo motor is 800mm, the cutter feeding amount of the servo motor is 0.1mm, and adjusting the vibration frequency of an ultrasonic vibrator to 29.8KHz and the amplitude of the ultrasonic vibrator to 75 mu m;
step 5: deep hole machining of polyetherimide
Selecting the processing device in the step 4 and the polyetherimide in the step 3, firmly placing the polyetherimide on an objective table 06 of the processing device, starting the processing device, continuously drilling a deep hole of 25mm at a guide hole on the polyetherimide by a second tungsten steel drill bit 03, and continuously introducing nitrogen for cooling protection in the process;
step 6: deep hole detection of polyetherimide
And 5, selecting the polyetherimide in the step, performing deep hole dissection detection and scanning electron microscope detection on the polyetherimide, and measuring the appearance condition of the inner wall of the deep hole.
Referring to fig. 5, a deep hole SEM image processed on polyetherimide is shown, wherein (A1) is a deep hole morphology image processed in embodiment one (α2=60°), the hole is slightly deformed, burrs and the like appear in the hole, and the enlarged image of the right image is more visual; the diagram (B1) is a deep hole morphology diagram processed by the second embodiment (beta 2=90°), the holes can be seen to be round from the left diagram, phenomena such as burrs and the like hardly occur in the holes, and the enlarged diagram of the right diagram is more visual; the diagram (C1) is a deep hole morphology diagram processed by the third embodiment (gamma 2=60°), the slight deformation of the hole can be seen from the left diagram, the phenomenon of burrs and the like appear in the hole, and the enlarged diagram of the right diagram is more visual; it is known that the deep hole processing and deburring of polyetherimide materials are more beneficial when the drill tip is at a 90 degree angle.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A processing device for a fine deep hole, the processing device comprising: the device comprises a machine base, a driving mechanism, a drill bit seat, a lifting mechanism, a tungsten steel drill bit and a controller, wherein the lifting mechanism is arranged on the machine base, the driving mechanism is arranged on the lifting mechanism and used for driving the driving mechanism to lift, the drill bit seat is arranged at the driving end of the driving mechanism, the tungsten steel drill bit is arranged on the drill bit seat, the control end of the controller is electrically connected with the control end of the driving mechanism, and the lifting control end of the controller is electrically connected with the control end of the lifting mechanism;
the tungsten steel drill bit comprises a spiral cutter drill body, a drill handle and a drill tip, wherein the drill tip is fixedly connected to the spiral cutter drill body, the drill tip is smoothly transited to the spiral cutter drill body, the other end of the spiral cutter drill body is fixedly connected to the drill handle, the spiral cutter drill body, the drill handle and the drill tip are integrally formed, the drill tip is a drill tip with an angle of 60 degrees or a drill tip with an angle of 90 degrees or a drill tip with an angle of 120 degrees, and the tungsten steel drill bit is used for processing a tiny deep hole on a plastic article.
2. The device for processing a deep hole according to claim 1, wherein the plastic material is selected from a polyetherimide material and a polyetheretherketone material.
3. The device for processing the micro deep hole according to claim 1, wherein the driving mechanism comprises a servo motor, the servo motor is installed on the lifting mechanism, and the driving end of the servo motor is installed with the drill bit seat.
4. A device for processing a deep hole as defined in claim 3, wherein said driving mechanism further comprises an ultrasonic vibrator, said ultrasonic vibrator is mounted at the driving end of said servo motor, and said ultrasonic vibrator is connected to said drill head base.
5. The apparatus of claim 4, wherein the servo motor is a servo motor with an integrated encoder, and wherein the encoder is electrically connected to the controller.
6. The device for processing a deep hole according to claim 1, wherein the length of the auger blade is selected from 20mm to 40mm, and the diameter of the auger blade is selected from 0.25mm to 0.35mm.
7. The apparatus according to claim 6, wherein the length of the drill shank is selected from 35mm to 40mm, and the diameter of the drill shank is selected from 4mm to 6mm.
8. The apparatus of claim 6, wherein the helical angle of the helical burr body is 30 ° -40 °.
9. A device for machining a deep hole as defined in claim 3, wherein the rotation speed of the servo motor is selected from 16000 to 35000 rpm.
10. The processing technology of the micro deep hole is characterized by comprising the following steps of:
step 1: machining of drill bits
A tungsten steel metal rod is selected and put on a milling and grinding numerical control machine tool to be processed, a diamond grinding wheel on the milling and grinding machine tool is used for integrally forming a drill shank with the length of 35mm-40mm and the diameter of 4mm-6mm, a spiral cutter drill body with the length of 20mm-40mm, the diameter of 0.25mm-0.35mm and the spiral angle of 30-40 DEG, and a joint of the spiral cutter drill body with the round table angle of 85-100 DEG and the drill shank, and a drill tip with the length of 60 DEG or 90 DEG or 120 DEG are processed;
step 2: assembly of processing device
Selecting the tungsten steel drill bit in the step 1, selecting a base, a servo motor, an ultrasonic vibrator, a drill bit seat, a lifting mechanism, the tungsten steel drill bit and a controller, installing the lifting mechanism on the base, installing the servo motor on the lifting mechanism, installing the drill bit seat and the ultrasonic vibrator on the driving end of the servo motor, connecting the ultrasonic vibrator with the drill bit seat, installing the tungsten steel drill bit on the drill bit seat, electrically connecting the control end of the driving mechanism with the control end of the controller, electrically connecting the lifting control end of the controller with the control end of the lifting mechanism, and electrically connecting the encoder with the controller by the servo motor integrated with the servo motor;
step 3: guide hole processing of plastic articles
Selecting the processing device in the step 2, stably placing the plastic article on an objective table on the processing device, and then selecting a first tungsten steel drill bit to drill a guide hole with the depth of 2mm-5mm on the surface of the plastic article;
step 4: adjustment of a processing device
Selecting the processing device in the step 2, adjusting the rotating speed of a servo motor on the processing device to be 16000-35000 revolutions per minute, feeding the servo motor to be 200-1600 mm, discharging the servo motor to be 0.08-0.15 mm, and adjusting the vibration frequency of an ultrasonic vibrator to be 20KHz-30KHz and the vibration amplitude to be 30-75 mu m;
step 5: deep hole processing of plastic articles
Selecting the processing device in the step 4 and the plastic article in the step 3, firmly placing the plastic article on an objective table of the processing device, starting the processing device, continuously drilling a deep hole of 20-40 mm at a guide hole on the plastic article by a second tungsten steel drill bit, and continuously introducing nitrogen into the drill hole for cooling protection in the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311158271.5A CN117102547A (en) | 2023-09-08 | 2023-09-08 | Machining device and machining process for micro deep holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311158271.5A CN117102547A (en) | 2023-09-08 | 2023-09-08 | Machining device and machining process for micro deep holes |
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| Publication Number | Publication Date |
|---|---|
| CN117102547A true CN117102547A (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311158271.5A Pending CN117102547A (en) | 2023-09-08 | 2023-09-08 | Machining device and machining process for micro deep holes |
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| Country | Link |
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| CN (1) | CN117102547A (en) |
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2023
- 2023-09-08 CN CN202311158271.5A patent/CN117102547A/en active Pending
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