CN201760639U - Helical hole-milling device - Google Patents
Helical hole-milling device Download PDFInfo
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- CN201760639U CN201760639U CN 201020148675 CN201020148675U CN201760639U CN 201760639 U CN201760639 U CN 201760639U CN 201020148675 CN201020148675 CN 201020148675 CN 201020148675 U CN201020148675 U CN 201020148675U CN 201760639 U CN201760639 U CN 201760639U
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Abstract
The utility model relates to a helical hole-milling device belonging to the technical field of cutting processing. The helical hole-milling device mainly comprises a helical feeding mechanism (1100) used for realizing the axial feeding and the revolution of a cutter (1303), a radial shifting mechanism (1200) used for adjusting the revolution radius of an opposite-hole axis, and an automatic rotation mechanism (1300) used for driving the cutter to rotate automatically. The device and the method related in the utility model can obviously improve the manufacturing quality and the processing efficiency of complicated hole systems at the surface of a large-sized workpiece.
Description
Technical field
The present invention relates to a kind of helical milling device, the highly-efficient processing, difficult-to-machine material that relate in particular to the large-scale workpiece porous series are produced the method for helically milling hole and the device of the high accuracy processing of mesopore, belong to the Machining Technology for Cutting field.
Background technology
The assembling drilling is the key link of aircraft, large-scale aircraft manufacturing assembling, and drilling efficient directly restricts the aircraft general assembly cycle, and the drilling quality also will directly influence the anti-fatigue performance of johning knot member.To this, the traditional drilling process technology of many at present employings.But the drilling drilling is a continuous working angles, and for the relatively poor titanium alloy of heat conduction, the drilling heat can cause the wear out failure of cutter rapidly.Secondly, the axial force of traditional drilling is very big, causes easily tearing for the carbon fibre reinforced composite material, mortality defectives such as splitting, fluffing, layering.In addition, for the assembling drilling of aviation field large amount of complex hole system, adopt traditional drilling mode to need a large amount of tool changing operations, this directly influences the production efficiency of assembling drilling.Especially along with aerospace component develops towards thin-walled property, integration and complicated direction, the requirement of housing construction long-life, high-quality, high efficiency, aspect such as pneumatic, it is higher, more smart than required in the past to make the assembling drilling; Simultaneously, the consumption of difficult-to-machine materials such as composite, titanium alloy increases considerably, and these all are that the assembling of big aircraft adopts new method for drilling and device thereof to propose obvious demand.At the problems referred to above, present a kind of drill process based on the helical milling principle, advantages such as cutting force is little because of having, good processing accuracy, drilling efficient height have obtained the great attention of domestic and international aviation and each big institute.
U.S. Pat 2003/0143049, PCT/SE2008/050719, PCT/SE03/00467 disclose several method for helically milling hole and device, its operation principle is all more approaching, the radial deflection of cutter all is that the relative motion by the inside and outside housing that has eccentric inner hole respectively produces twice eccentric adjusting and realizes, and each device all is to utilize three drive systems to realize rotation, revolution and the axial feed of cutters.Its advantage is that rotation, the revolution of cutter, axial feed three's speed can be controlled separately, and moves mutually by inner and outer shell and to carry out eccentric adjusting, and the vibration that the mass eccentricity of whole device is brought has obtained fine inhibition.But it is complicated that its device is formed, and increased the disturbing factor that influences the drilling precision, and weight is bigger, and this performance requirement to the workbench supporting with it is very high, as industrial robot.
In addition, China application (patent) number: 200910068518.8, title: method for helically milling hole and device, this device also is made up of rotation system, rotary drive system, axial feed system, radial offset mechanism four parts of cutter, but its radial deflection is to adopt one to realize for the inner sleeve of circular hole and a worm and gear transmission for oval, interior outward.The rotary speed of cutter is to drive the one-level gear drive by rotating driving device to control, and the axial feed of cutter is to be controlled by the valve body that has the intake and exhaust amount.
Summary of the invention
The present invention is directed to structure form complicatedly easily cause making difficulty, cost of manufacture height, machining accuracy is difficult to guarantee and the big deficiency that influences aspects such as application benefit of weight, proposed a kind of one-level lead screw transmission of utilizing based on the helical milling principle and realized cutter screwfeed and method for helically milling hole and device with grating chi satellite radial location.
A kind of helical milling device is characterized in that:
This device comprises in order to the screwfeed mechanism of the axial feed of realizing cutter and revolution, the radial offset mechanism in order to regulate cutter relative opening axis revolution radius, the free-wheeling system that is used to drive the cutter rotation;
Described screwfeed mechanism comprises cylindrical shell, is installed on that the sliding support in the cylindrical shell, the revoluting motor that is fixed in sliding support, an end link to each other with the revoluting motor output shaft and is installed on cylindrical hollow leading screw in the housing by the screw thread kinematic pair by chute;
Described cutter free-wheeling system comprises spinning motor, and spinning motor is installed on the other end of above-mentioned cylindrical hollow leading screw by described radial offset mechanism.
Described radial offset mechanism comprises: the supports end cap that is used for being fixedly linked with the hollow leading screw, be used for the skew slide block that is fixedly linked with spinning motor, the skew slide block on the fixed installation or be processed with tooth bar, the driven wheel that cooperates with the tooth bar that is offset slide block is installed on the supports end cap; Supports end cap also is provided with the chute position limiting structure parallel with above-mentioned tooth bar with skew between the slide block, is provided with lock-screw and and tight bolt.Between supports end cap and skew slide block, also be provided with the grating chi that is used to represent side-play amount.Endoporus one end of described driven wheel is set in the fixed central spindle of radial deflection slide block, and the other end is the fixing hole that reverses of interior hexagonal.
In addition, to supply be that the conducting slip ring by being fixed in hollow leading screw bottom and the electric connection of being fixed between fixed electrode on the sliding support realize to the power supply of above-mentioned cutter free-wheeling system.
A kind of method for helically milling hole according to above-mentioned helical milling device is characterized in that may further comprise the steps:
Step 1, cutter are transferred to certain bias state realization machining hole radius adjusting by the central axis of radial offset mechanism relative opening;
When step 2, hole milling, the screwfeed of cutter realizes by lead screw pair, and the cutter rotation realizes by spinning motor;
The present invention has following effect: 1, because axial feed and revolution are to realize that by the one-level lead screw pair make the helical milling device structure become simple, weight is lighter, manufacturing cost reduces; 2,, utilize the one-level lead screw pair to realize that simultaneously axial feed and revolution make the drilling precision obtain reliable assurance because of guide screw movement transmitting accuracy height; 3, the radial deflection adjustment adopts the one-level rack-and-pinion to drive, and be equipped with the grating chi and make between cutter and shell body and can accurately locate, thus the dimensional accuracy of assurance drilling; 4, the method and apparatus that the present invention relates to is different from traditional drilling mode, and cutting force is little, and heat radiation is convenient, and tool wear is little, can be used for the high accurate hole system processing of difficult-to-machine materials such as titanium alloy, the fine composite reinforcing material of carbon; 5, this installation weight is slim and graceful, can be used as the terminal drilling unit of the automatic drilling of robot, realizes the automatic drilling of some special occasions, as aviation assembling drilling; 6, can realize one cutter processing plurality of specifications aperture, avoid frequent tool changing, cutting at one time just can reach whole hole dimension, has simplified technological process, has improved drilling efficient.
Description of drawings
Fig. 1 is the structural representation according to helical milling device one preferable case study on implementation of the present invention.
Fig. 2 is positioned at maximum eccentric states for cutter of the present invention, and the axial feed of screwfeed mechanism is in the schematic diagram of initial position.
Fig. 3 is positioned at maximum eccentric states for cutter of the present invention, and the axial feed of screwfeed mechanism is in the schematic diagram of maximum position.
Fig. 4 is the cutaway view of radial offset mechanism of the present invention along Fig. 1 slice location A-A.
Fig. 5 is that the bottom of helical milling device of Fig. 1 is to view.
Fig. 6 is the workflow diagram of method for helically milling hole one preferable case study on implementation of the present invention.
Label title among Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5: 1100, screwfeed mechanism, 1101, cylindrical shell, 1102, the hollow leading screw, 1103, revoluting motor, 1104, lead, 1105, sliding support, 1106, set bolt, 1107, fixed electrode, 1108, chute, 1109, power transmission shaft, 1110, conducting slip ring, 1111, check nut, 1112, set bolt, 1113, cover plate two, 1114, cover plate one, 1115, lead screw pair.
1200, radial offset mechanism, 1201, the skew slide block, 1202, mandrel, 1203, driven wheel, 1204, the grating chi, 1205, supports end cap, 1206, and tight bolt, 1207, lock-screw.
1300, cutter free-wheeling system, 1301, spinning motor, 1302, the cutter clamping device, 1303, cutter.
E among the figure: expression cutter radial offset distance.
Label title: 401-404, method implementation step among Fig. 6.
The specific embodiment
Below in conjunction with accompanying drawing and concrete embodiment helical milling device of the present invention and method are described in detail.
Fig. 1 is a kind of helical milling device disclosed by the invention, and this device mainly comprises screwfeed mechanism 1100, radial offset mechanism 1200, cutter free-wheeling system 1300.Described radial offset mechanism 1200 links to each other with screwfeed mechanism 1100 through circumferential uniform bolt 1112 by adjusting supports end cap 1205, is connected by radial deflection slide block 1201 and cutter free-wheeling system 1300 simultaneously.
Cutter free-wheeling system 1300, its spinning motor 1301 links to each other with the cutter 1303 of certain diameter by terminal cutter clamping device 1302.
Screwfeed mechanism comprises cylindrical shell 1101, is installed on that the sliding support 1105 in the housing, the revoluting motor 1103 that is fixed in sliding support 1105, bottom link to each other with revoluting motor 1103 output shafts and is installed on hollow leading screw 1102 in the housing by the screw thread kinematic pair by chute 1108, also comprise the spinning motor 1301 that is installed on hollow leading screw 1102 tops by radial offset mechanism 1200, spinning motor 1301 output shaft mounting cutters 1303; Carry out axial feed and revolution simultaneously by revoluting motor 1103 driving hollow leading screws drive radial offset mechanism 1200 and cutter 1303.
In addition, the power supply of cutter free-wheeling system 1300 supply be conducting slip ring 1110 by hollow leading screw 1102 bottoms in operation process all the time and 1107 of the fixed electrodes on the sliding support 1105 take place to electrically connect and realize.
The operation principle of apparatus of the present invention is as follows: during hole milling, at first the diameter according to the hole utilizes radial offset mechanism 1200 that the axis of cutter free-wheeling system 1300 relative cylindrical shells 1101 is transferred to required bias state, realizes under screwfeed mechanism 1100 drives that then a cutter that is driven by spinning motor 1301 carries out continuous hole milling operation to the plurality of specifications aperture.The workflow of a preferable case study on implementation of helical milling as shown in Figure 6.
Cutter free-wheeling system 1300, the cutter clamping device 1302 by end is realized the tool changing and the clamping of cutters 1303, utilizes the speed-regulating function of spinning motor 1301 to come the rotating speed of hole control cutter 1303 simultaneously.
Radial deflection is adjusted shown in 4.During adjustment, radial offset mechanism 1200, at first unclamp the lock-screw 1207 of adjusting supports end cap 1205 upper surfaces two and a tight bolt 1206 and a side, utilize special use to reverse spanner rotation driven wheel 1203, under the acting in conjunction of dovetail groove binding face and rack-and-pinion skew slide block 1201 drive cutter free-wheeling systems 1300 along cylindrical shell 1101 radially carry out slippage, concrete tuningout position is controlled with the grating chi 1204 of adjusting 1205 of supports end cap and tyre digital display (not shown) thereof by being fixed on skew slide block 1201.When arriving desired location, tighten side direction lock-screw 1207 earlier and transmit the gap, also tight then end face axial and tight bolt 1206, the accurate location when guaranteeing drilling between cutter free-wheeling system 1300 and the screwfeed mechanism 1100 to eliminate between rack-and-pinion.
When screwfeed mechanism 1100 worked, the revoluting motor 1103 of this mechanism together produced by power transmission shaft 1109 drive hollow leading screws 1102 and rotates in a circumferential direction.Because the sliding support 1105 of this revoluting motor 1103 is subjected to the screw transmission of 1102 of the circumferential constraint of quartering chute 1108 on cylindrical shell 1101 inner surfaces and cylindrical shell 1101 and hollow leading screws, described hollow leading screw 1102, revoluting motor 1103 and sliding support 1205 move forward and backward cutter free-wheeling system 1300, radial offset mechanism 1200 together along cylindrical shell 1101 axis directions, promptly finish cutter shaft to the cutting feeding.Fig. 2, Fig. 3 represent that respectively hollow leading screw 1102 is in the initial position and the maximum position of axial feed.Because of cutter free-wheeling system 1300 is in bias state through offsetting mechanism 1200 modulated cylindrical shells 1101 extremely relatively, described cutter 1303 is when carrying out axially-movable, also realized the spiral revolution of relative opening axis, be the cutting feeding that the hole milling cutter has also been finished revolution, finally reach the helical milling purpose with screwfeed.
The above only is the helical milling device that the present invention relates to and a preferable case study on implementation of method, but practical range of the present invention is not limited thereto example.
Claims (5)
1. helical milling device is characterized in that:
This device comprises in order to the screwfeed mechanism (1100) of the axial feed of realizing cutter (1303) and revolution, the radial offset mechanism (1200) in order to regulate cutter (1303) relative opening axis revolution radius, the free-wheeling system (1300) that is used to drive the cutter rotation;
Described screwfeed mechanism comprises cylindrical shell (1101), is installed on that sliding support (1105), the revoluting motor (1103) that is fixed in sliding support (1105), an end in the cylindrical shell links to each other with revoluting motor (1103) output shaft and is installed on cylindrical hollow leading screw (1102) in the housing by the screw thread kinematic pair by chute (1108);
Described cutter free-wheeling system (1300) comprises spinning motor (1301), and spinning motor is installed on the other end of above-mentioned cylindrical hollow leading screw (1102) by described radial offset mechanism (1200).
2. helical milling device according to claim 1 is characterized in that:
Above-mentioned radial offset mechanism comprises: the supports end cap (1205) that is used for being fixedly linked with hollow leading screw (1102), be used for and skew slide block (1201) that spinning motor (1301) is fixedly linked, fixedly mount or be processed with tooth bar on the skew slide block (1201), the driven wheel (1203) that cooperates with the tooth bar that is offset slide block is installed on the supports end cap (1205); Also be provided with the chute position limiting structure parallel between supports end cap (1205) and skew slide block (1201), be provided with lock-screw (1207) and and bolt (1206) tightly with above-mentioned tooth bar.
3. helical milling device according to claim 2 is characterized in that:
Also be provided with the grating chi (1204) that is used to represent side-play amount between above-mentioned supports end cap (1205) and the skew slide block (1201).
4. helical milling device according to claim 2 is characterized in that: endoporus one end of above-mentioned driven wheel (1203) is set in the fixed central spindle (1202) of radial deflection slide block (1201), and the other end is the fixing hole that reverses of interior hexagonal.
5. helical milling device according to claim 1 is characterized in that: it is that the conducting slip ring (1110) by being fixed in hollow leading screw (1102) bottom and the electric connection of being fixed between fixed electrode (1107) on the sliding support (1105) realize that the power supply of above-mentioned cutter free-wheeling system (1300) is supplied with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020148675 CN201760639U (en) | 2010-03-31 | 2010-03-31 | Helical hole-milling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020148675 CN201760639U (en) | 2010-03-31 | 2010-03-31 | Helical hole-milling device |
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| Publication Number | Publication Date |
|---|---|
| CN201760639U true CN201760639U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020148675 Expired - Fee Related CN201760639U (en) | 2010-03-31 | 2010-03-31 | Helical hole-milling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100734A (en) * | 2013-01-24 | 2013-05-15 | 南京信息职业技术学院 | Drilling tail end actuator |
-
2010
- 2010-03-31 CN CN 201020148675 patent/CN201760639U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100734A (en) * | 2013-01-24 | 2013-05-15 | 南京信息职业技术学院 | Drilling tail end actuator |
| CN103100734B (en) * | 2013-01-24 | 2015-04-01 | 南京信息职业技术学院 | Drilling tail end actuator |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20150331 |
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| EXPY | Termination of patent right or utility model |