CN86203587U - Microbore high speed precise drill machine with microcomputer control - Google Patents
Microbore high speed precise drill machine with microcomputer control Download PDFInfo
- Publication number
- CN86203587U CN86203587U CN 86203587 CN86203587U CN86203587U CN 86203587 U CN86203587 U CN 86203587U CN 86203587 CN86203587 CN 86203587 CN 86203587 U CN86203587 U CN 86203587U CN 86203587 U CN86203587 U CN 86203587U
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- Prior art keywords
- main shaft
- turbine
- drill machine
- diameter
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910000737 Duralumin Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Abstract
The utility model provides a novel micropore high-speed and precise drill machine controlled by a microcomputer, and is suitable for carrying out pore machining (drilling, expansion and hinging) on non-metallic material, non-ferrous material, steel material and stainless steel material. The hole diameter is from phi 0.1 mm to phi 0.5 mm. The precision is plus 0.005 mm or minus 0.005 mm. The finish is from delta 8 to delta 0. A mail shaft of the drill machine adopts an aerostatic bearing, and the main shaft is driven by a purpose-made air turbine. The microcomputer controls a stepper motor. The axial feeding is realized by driving a gear wheel. The utility model adopts a double upright post type guide mechanism and the original structural configuration, and is a special specific micropore drill machine in the single piece, batch and large quantity production.
Description
Be applicable to nonmetal, non-ferrous metal, steel and the stainless steel capillary processing on the part in addition (bore, expand, hinge), the aperture is φ 0.1～φ 0.5mm, and precision is ± 0.005mm fineness V8～V10.It is the special efficacy high speed and precision drilling machine that scientific research processing factory that factory, instrument and meter factory and electronics, aviation and national defense industry field are chewed by wrist watch plant, chemical fibre factory, oil pump oil is used for capillary processing.
United States Patent (USP) 3677351 has been introduced a kind of high-speed precision mini-hole drilling machine, and its turbine supply gas pressure is 15Psi(1.05kg/cm
2), the speed of mainshaft is 22000RPM; If the turbine supply gas pressure is 100Psi(7kg/cm
2), the speed of mainshaft is 100000RPM.The journal bearing of its axis system is an overall structure, and thrust bearing is three circle apertures, and three circles are totally 43 apertures, and turbine (rotor) is distributed on the circumference by many blades, and air directly impacts the blade rotation; Axially send to by the compressed air-driven main shaft.In the axis system, journal bearing is a monoblock type, and manufacturability is poor; The lobe numbers of turbine is more, complex structure; The main shaft axial feed is the influence of air pressure variations by compression, and it is not steady to work, and shake is arranged; And the main axle structure complexity, the number of packages order is many in addition, and manufacturability is relatively poor, the cost height.
Task of the present utility model provides a kind of novel microcomputer control high-speed precision mini-hole drilling machine.Its development has demonstrated fully the advantage of prior art, and has overcome above-mentioned shortcoming.
In the accompanying drawing:
Fig. 1 is a lathe overall layout chart,
Fig. 2 is the machine-tool spindle system structure principle chart,
Fig. 3 is the feed system figure of lathe,
Fig. 4 is the pneumatic system diagram of lathe,
Fig. 5 is the Guiding machine composition of lathe,
Fig. 6 is ball-screw locking clutch figure,
Fig. 7 is the speed of mainshaft and supply gas pressure curve (experimental result).
By Fig. 1, this lathe is made up of control system (1), two column plastics guiding mechanisms (2), axis system (3), depth measurement mechanism (4), magnifying glass (5), pneumatic system (6) and workbench (7) etc.
The operation principle of principal organ is as follows:
1. axis system: see Fig. 2
Main shaft is vertical rotary main shaft, by dop nut (3-1), spring chuck (3-2), end cap (3-3), main shaft (3-4), hole plug (3-5), axis body (3-6), journal bearing (3-7), indirect cover (3-8), radial-thrust bearing (3-9), coupling sleeve (3-10), retaining ring (3-11), thrust bearing (3-12), close compression ring (3-13), sealing ring (3-14), turbine (3-15), plug (3-16), turbine cover (3-17), screw (3-18), cap (3-19) and gas cap (3-20) are formed.
Compressed air is entered by last hole (a), through two journal bearing throttling pore (b) (each two row, every row constitutes by 10～12, the aperture is φ 0.15～φ 0.35mm) and two thrust bearing throttling pore (c) (each row, every row constitutes by 12～16, the aperture is φ 0.15～φ 0.35mm), enter the bearing clearance, and (compressed-air actuated pressure is 4～5kg/cm to form the thin air film of one deck between the main shaft (3-4)
2, change with workpiece material with the bore diameter size), main shaft is floated, make the main shaft heart placed in the middle position, keep certain rigidity.Compressed air enters turbine (3-15) through following duct (d) again simultaneously, eject (axis of cylinder aperture (f) is vertical with the turbine radial direction) by 12～14 uniform cylinder apertures (f) on its circumference, form reaction force at the main shaft cap inner chamber, drive shaft (3-4) is rotation at a high speed.Compressed air again by between main shaft (3-4) and bearing (3-9), (3-12) and exhaust duct (e) discharge.
2. feed system: see Fig. 3
By microcomputer-controlled step motor (1-1) forward and backward, it is upper and lower mobile to pass to ball-screw (1-3) the drive headstock (1-4) through the gear of gearbox (1-2), realize feed motion, when the headstock moves up and down, by guiding mechanism (2) guiding, keep main shaft (3-4) flexibly, move reposefully.
3. pneumatic system: see Fig. 4
Compressed air is the rotating power source of main shaft (3-4).Pneumatic system is filtered dehydrater (6-2) by gas source switch (6-1), filter collector (6-3), and inlet pressure adjusting valve (6-4), (6-5), distributing valve (6-6) and storage cylinder (6-7) are formed.Compressed air is supplied with by supply station or air feed pump, and pressure should be stabilized in about 5 atmospheric pressure.
4. workbench is 160 * 160mm
2But each moves 50mm left-right and front-back, is driven by accurate thread leading screw M10 * 0.5mm, and handwheel is 200 lattices such as grade, and per minute degree lattice are 2.5 μ m.
5. two guide pillar mechanism: see Fig. 5
It is the two high column structures of φ 20～φ 28mm that the guiding mechanism of this lathe (2) adopts diameter, special polytetrafluoroethylplastic plastic conduction band (2-3) is housed in the guide pin bushing (2-2), and thickness is 1.5～2mm, available monoblock type, also available band shape, scratch in guide pin bushing (2-2), and cement, form through Precision Machining again in the inside of guide pin bushing (2-2), coefficient of friction is little, guiding steadily, and is flexibly, light.
6. locking clutch: see Fig. 6
For preventing the drilling machine headstock (1-4) because of the deadweight free-falling, this lathe has been taked two measures:
1). the frictional resistance in two guide pillar mechanisms (2) of utilization and the gearbox (1-2) between the travelling gear and the headstock (1-4) are because of the mutual balance of deadweight decline, and make the headstock (1-4) not produce free-falling, this can pass through to adjust in the magnitude of interference of guiding mechanism (2) and the gear drive and gives tight power and realize.
2). adopt the locking clutch structure, see Fig. 6
By tooth bar (8-1), opening circlip (8-2), clutch sleeve (8-3), roller (8-4), gear (8-5), roller support (8-6) is formed.
Before lathe quits work, rotate the end nut of tooth bar (8-1) by hand, tooth bar (8-1) is moved to the left, driven gear (8-5) clockwise rotates, promote three rollers (8-4) into clutch sleeve (8-3) that becomes simultaneously by the roller spiral rolling track, and it is held tightly.
Lathe leaves motor power earlier before using, and makes tooth bar (8-1) backspace original position again, decontrols three rollers (8-4), and clutch sleeve (8-3) can be free with ball-screw (1-3) revolution, and lathe is started working.
This clutch is installed on the gear wheel below of gearbox (1-2), structure dexterity, reliable in action.
The advantage of this lathe:
Lathe have high efficiency (feed speed is 15～48 millimeters/minute) and high accuracy (the processing aperture precision for ± 0.005mm).
2. lathe has at a high speed, sees Fig. 7
Find out by the speed of mainshaft and supply gas pressure relation curve:
Compressed air is with 1～3kg/cm
2The pressure-driven turbine and make main shaft (3-4) obtain 15600 rev/mins～42000 rev/mins rotations at a high speed.
3. main shaft journal bearing (3-7) is divided into upper and lower two sections, and its processability of product structure is good.
4. it is uniform that turbine (3-15) adopts the circumference aperture, utilizes jet reaction driven main shaft (3-4) rotation; And throttling pore is a circular hole, and is simple, good manufacturability.
5. drive the upper and lower motion of the headstock (1-4) by microcomputer-controlled step motor by gear, ball-screw, realize feeding, be not subjected to the influence of bleed pressure, in guiding mechanism (2), adopt polytetrafluoroethylene (PTFE) conduction band (2-3) simultaneously, coefficient of friction is little, stable working.
6. the axis system compact conformation is simple, and the number of packages amount is few in addition, can reduce cost.
7. adopted small and exquisite locking clutch structure, prevented the main shaft headstock reliably because the free-falling that deadweight causes.
Accompanying drawings embodiment:
1. main shaft (3-4) is seen Fig. 2, and the main shaft diameter is φ 16～φ 20mm, and the main shaft dimensional accuracy is-0.009mm, fineness is V11～V12, gap between main shaft and bearing (3-7) is 0.02～0.035mm, and the diameter of air throttling pore (b), (c) is φ 0.15～φ 0.35mm
2. guiding mechanism (2) is seen Fig. 5
Adopt two columns, column diameter is φ 20～φ 28mm, and polytetrafluoroethylene (PTFE) conduction band thickness is 1.5～2mm, available monoblock type, and also available band shape or spiral in guide pin bushing (2-2), and cements it,
3. turbine (3-15) is seen Fig. 2
Turbine is the hollow rotating body structure, diameter is φ 60～φ 65mm, R25～R30mm place and its radial direction perpendicular to get out 12～14 of φ 0.8～φ 1.2mm apertures (f) uniform, gas is ejected through aperture (f) from inner chamber, impact cap (3-19) inwall on the main shaft, form reaction force, drive turbine and drive main axis rotation, the turbine manufacturing answers wall thickness even, material duralumin, aperture is uniform, requires dynamic balancing.
4. locking clutch, as shown in Figure 6:
The m=1 of tooth bar (8-1) and gear (8-5), the Z=45 of gear (8-5), material is T8, the roller diameter is φ 4, the raceway arc radius is R=14.2mm on the gear, eccentric throw is that three sections circular arcs of 1mm respectively account for 120 °, and its locking torque is greater than 3kgcm, and appearance and size is about φ 47mm * 20mm.
Claims (4)
1, a kind of micro-processor controlled high-speed precision mini-hole drilling machine, by control system (1), guiding mechanism (2), axis system (3), depth measurement mechanism (4), magnifying glass (5), pneumatic system (6) and workbench (7) are formed, and it is characterized in that:
A, by microcomputer-controlled step motor (1-1) rotation, drive ball-screw (1-3) rotation through gearbox (1-2), drive the upper and lower motion of the head of a bed (1-4);
The diameter of b, main shaft (3-4) is φ 16～φ 20mm, and precision is-0.009mm that fineness is
11～
12, the journal bearing (3-7) of axis system (3) is divided into upper and lower two sections, every section has double throttling pore (b) [each two row, every row constitutes by 10～12, the aperture is φ 0.15～φ 0.35mm] and two thrust bearings (3-12) throttling pore (c) (each row, every row constitutes by 12～16, the aperture is φ 0.15～φ 0.35mm), gap between main shaft and bearing is 0.02～0.035mm) along diametric(al), to form aerostatic bearing;
C, compressed air enter turbine (3-15), form reaction force in main shaft cap, and drive shaft (3-4) is rotation at a high speed.
2, by the described high-speed precision mini-hole drilling machine of claim 1, it is characterized in that, turbine (3-15) is the hollow rotating body structure, diameter is φ 60～φ 65mm, on the circumference at R25～R30mm place, there are 12～14 small cylindrical opening post holes (f) of φ 0.8～φ 1.2mm uniform, the axis of cylindrical hole (f) is vertical with the turbine radial direction, and turbine (3-15) is made with duralumin.
3, by claim 1 or 2 described high-speed precision mini-hole drilling machines, it is characterized in that, it is two guide pillar mechanisms (2) of φ 20～φ 28mm that a diameter is arranged, polytetrafluoroethylplastic plastic conduction band (2-3) is housed in the guide pin bushing (2-2), its thickness is 1.5～2mm, can be made into monoblock type, also can be made into banded formula, around or be bonded in the guide pin bushing (2-2).
4, by claim 1 or 2 described high-speed precision mini-hole drilling machines, it is characterized in that a locking clutch is arranged, is T by material
8The tooth bar of modulus m=1 (8-1), opening circlip (8-2), clutch sleeve (8-8), diameter are the roller (8-4) of φ 4, modulus m=1, the gear of tooth number Z=45 (8-5), roller support (8-6) is formed, and the raceway arc radius on the gear (8-5) is R=14.2mm, eccentric throw is that three sections circular arcs of 1mm respectively account for 120 °, and appearance and size is about φ 47mm * 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203587 CN86203587U (en) | 1986-06-04 | 1986-06-04 | Microbore high speed precise drill machine with microcomputer control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203587 CN86203587U (en) | 1986-06-04 | 1986-06-04 | Microbore high speed precise drill machine with microcomputer control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86203587U true CN86203587U (en) | 1987-06-10 |
Family
ID=4806852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86203587 Expired - Lifetime CN86203587U (en) | 1986-06-04 | 1986-06-04 | Microbore high speed precise drill machine with microcomputer control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86203587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553079A (en) * | 2017-09-28 | 2018-01-09 | 中国航发动力股份有限公司 | A kind of processing method of fuel nozzle precise hole |
| CN111923072A (en) * | 2020-09-18 | 2020-11-13 | 湖南机电职业技术学院 | Clamping manipulator |
-
1986
- 1986-06-04 CN CN 86203587 patent/CN86203587U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553079A (en) * | 2017-09-28 | 2018-01-09 | 中国航发动力股份有限公司 | A kind of processing method of fuel nozzle precise hole |
| CN111923072A (en) * | 2020-09-18 | 2020-11-13 | 湖南机电职业技术学院 | Clamping manipulator |
| CN111923072B (en) * | 2020-09-18 | 2020-12-22 | 湖南机电职业技术学院 | Clamping manipulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |