CN111482638B - Portable spiral hole milling unit - Google Patents
Portable spiral hole milling unit Download PDFInfo
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- CN111482638B CN111482638B CN202010313047.9A CN202010313047A CN111482638B CN 111482638 B CN111482638 B CN 111482638B CN 202010313047 A CN202010313047 A CN 202010313047A CN 111482638 B CN111482638 B CN 111482638B
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- 238000003801 milling Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000001360 synchronised effect Effects 0.000 claims description 33
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a portable spiral hole milling unit. The cutter is connected to the output side of the output shaft, the output shaft is connected into the outer sleeve, the input side of the outer sleeve is connected with the first transmission mechanism and the third transmission mechanism, the input end of the output shaft is connected with the second transmission mechanism, the second transmission mechanism is used for driving the output shaft to rotate to complete the rotation of the cutter, the outer sleeve is installed in the sleeve shell through a sliding bearing and can rotate relative to the sleeve shell under the action of the third transmission mechanism to complete the rotation of the cutter around the axis of the outer cylindrical surface of the outer sleeve; and the outer sleeve moves back and forth along the axis direction under the action of the first transmission mechanism to complete the feed motion of the cutter. The outer sleeve can rotate, move back and forth, simultaneously realizes revolution motion and axis feed motion, and has compact structure, light weight, small volume, portability and suitability for complex small-space working condition operation compared with the traditional structure of a linear guide rail and a rolling bearing.
Description
Technical Field
The invention relates to the technical field of hole making and processing in aerospace craft assembly, in particular to a portable spiral hole milling unit.
Background
Aerospace craft are largely made of composite materials, aluminum alloys, titanium alloys, high-strength steel and other difficult-to-machine materials, and laminated structures composed of more than two materials in different forms. There are a large number of drilling and machining requirements during the assembly of aircraft structural members. In order to solve the above problems, the prior art provides a new hole-making method, i.e. a special end mill is used to perform spiral hole milling, and the principle is that the cutter itself rotates at a high speed and simultaneously feeds along a spiral track, and finally a round hole with a diameter larger than that of the cutter itself is milled on a workpiece. To the system hole of novel materials such as combined material, titanium alloy, because the spiral milling hole axial cutting force is less than the drilling, consequently demonstrate the characteristics that are superior to traditional drilling, the spiral milling hole is applied to the aircraft assembly, replaces traditional drilling to process some bolt holes and rivet holes that high quality required, and the range of application constantly enlarges. When the spiral hole milling is carried out, a cutter needs to be fed along a spiral track, the existing hole making equipment does not generally have the function, and therefore special spiral hole milling equipment needs to be developed. The existing spiral hole milling device has the following problems: (1) the spiral hole milling device is large in overall size and heavy in weight, and is not suitable for spiral hole milling under the working condition of complex space; (2) the spiral hole milling device has the advantages of complex structure, high cost and unsuitability for batch manufacturing.
Disclosure of Invention
In light of the above-mentioned technical problems, a portable helical milling unit is provided. The technical means adopted by the invention are as follows:
a portable helical milling unit comprising: the cutter, the output shaft, the outer sleeve, the sleeve shell and a plurality of transmission mechanisms used for providing power, the output shaft is sleeved in an inner hole of an output section of the outer sleeve in a replaceable manner, the output shaft and the outer sleeve both have preset eccentric amounts, the cutter is connected to the output side of the output shaft, the output shaft is detachably connected in the outer sleeve, the outer sleeve is installed in the sleeve shell through a sliding bearing, the input side of the outer sleeve is connected with a first transmission mechanism and a third transmission mechanism, the input end of the output shaft is connected with a second transmission mechanism, the third transmission mechanism is used for driving the outer sleeve to rotate relative to the sleeve shell to complete the rotation of the cutter around the axis of the outer cylindrical surface, the first transmission mechanism is used for driving the outer sleeve to move back and forth relative to the axis direction of the sleeve shell to complete the feeding motion of the cutter, and the second transmission mechanism is used for driving the output shaft to rotate, the rotation of the tool is completed.
Furthermore, the output section of the outer sleeve is of an eccentric structure, namely the axis of the outer cylindrical surface of the output section of the outer sleeve and the axis of the inner hole of the output section of the outer sleeve have a certain eccentric amount e0The middle section and the input section are of coaxial structure, namely the axis of the outer cylindrical surface is concentric with the axis of the inner hole of the middle section of the outer sleeve and the input section, the output shaft comprises a main shaft and an inner sleeve with an eccentric structure, namely the axis of the outer cylindrical surface of the output shaft and the axis of the inner hole have a certain eccentric amount enThe main shaft is sleeved on the inner sleeve through a main shaft bearingIn the bore of the barrel.
Furthermore, the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are connected to the sleeve shell through connecting pieces.
Furthermore, the first transmission mechanism comprises a first motor and a lead screw, the first motor is horizontally arranged on the sleeve shell, the output end of the first motor is connected with the lead screw through a lead screw coupler, one end of the lead screw is arranged in an installation hole of a lead screw support seat, the other end of the lead screw is sleeved in a lead screw nut, the lead screw support seat is horizontally arranged on the sleeve shell, and the lead screw nut is arranged on the translation plate;
the second transmission mechanism comprises a second motor and a transmission shaft, the output end of the second motor is connected with the input end of the transmission shaft, and the output end of the transmission shaft is connected with the input end of the main shaft;
the third transmission mechanism comprises a third motor and a first synchronous toothed belt, a third synchronous toothed belt wheel is mounted at the input end of the outer sleeve, and the third synchronous toothed belt wheel is connected with a fourth synchronous toothed belt wheel mounted at the output end of the third motor through the first synchronous toothed belt;
the outer side of the input section of the outer sleeve is connected with the translation plate through a revolution bearing.
Furthermore, the second motor and the third motor are both arranged on the translation plate, the input end of the transmission shaft is provided with a second synchronous toothed belt wheel, and the second synchronous toothed belt wheel is connected with a first synchronous toothed belt wheel arranged at the output end of the second motor through a second synchronous toothed belt.
Furthermore, the second transmission mechanism further comprises an encoder used for measuring the rotating speed of the main shaft, the encoder is installed at the output end of the second motor or the output end of the transmission shaft, and the shell of the encoder is fixed on the flat movable plate through an encoder supporting seat.
Furthermore, the transmission shaft is installed through transmission bearing the outer sleeve input section, the output end circle axle of transmission shaft passes through the input of key-type connection universal joint shaft coupling, and the output of universal joint shaft coupling links to each other with the input of main shaft.
Further, one end of the optical axis is fixedly installed on the sleeve shell, the other end of the optical axis is sleeved in the optical axis sliding block, the optical axis sliding block is installed on the translation plate, and the optical axis is used for enabling the translation plate to keep a vertical state, namely, the optical axis can only move in the axial direction of the cutter and cannot rotate.
Further, the outer side of the output end of the sleeve shell is fixed with the shell through a flange, and handles are installed on two sides of the shell.
Furthermore, a positioning sleeve is fixed on the front side of the flange.
The invention has the following advantages:
(1) the portable spiral hole milling unit adopts the sliding bearing to support the outer sleeve, the outer sleeve can rotate and move back and forth, the revolution motion and the axis feeding motion are realized, compared with the traditional structure of a linear guide rail and a rolling bearing, the portable spiral hole milling unit has better rigidity, and can realize higher-precision processing.
(2) The portable spiral hole milling unit effectively coordinates the spatial relationship among the first transmission mechanism, the second transmission mechanism and the third transmission mechanism through mechanisms such as a translation plate, a synchronous belt and an optical axis, so that the portable spiral hole milling unit has the advantages of compact integral structure, light weight, small volume and portability, and is suitable for operation under any complex small-space working condition.
(3) According to the invention, the required output shaft is selected according to the eccentric magnitude e to be adjusted to adjust the eccentric magnitude, so that the high-precision adjustment and large-range adjustment of the eccentric magnitude are realized, the range of the processing aperture is enlarged, the processing quality is improved, the processing efficiency is improved, and the processing cost is reduced.
Based on the reason, the method can be widely popularized in the technical field of hole making processing in the assembly of aerospace aircrafts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a portable helical milling unit in an embodiment of the present invention.
Fig. 2 is a schematic view showing the state of relevant parts at the time of specific eccentricity amount adjustment in the specific embodiment of the present invention.
The automatic numerical control machine tool comprises a tool 1, a tool 2, a main shaft, an inner sleeve 3, a main shaft bearing 4, an outer sleeve 5, a sliding bearing 6, a sleeve shell 7, a first motor 8, a lead screw coupler 9, a lead screw support seat 10, a lead screw 11, a lead screw 12, a second motor 13, a translation plate 14, an encoder support seat 15, a lead screw nut 16, an encoder 17, a first synchronous toothed belt wheel 18, a second synchronous toothed belt wheel 19, a third synchronous toothed belt wheel 20, a fourth synchronous toothed belt wheel 21, a transmission shaft 22, a transmission bearing 23, a revolution bearing 24, an optical shaft sliding block 25, a third motor 26, an optical shaft 27, a handle 27, a universal joint coupler 28, a shell 29 and a positioning shaft sleeve 30.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention discloses a portable spiral hole milling unit, including: the cutting tool comprises a cutting tool 1, an output shaft, an outer sleeve 5, a sleeve shell 7 and a plurality of transmission mechanisms for providing power, wherein the output shaft and the outer sleeve 5 both have preset eccentric amounts, the cutting tool 1 is connected to the output side of the output shaft, the output shaft is detachably connected in the outer sleeve 5, the outer sleeve 5 is installed in the sleeve shell 7 through a sliding bearing 6, the input side of the outer sleeve 5 is connected with a first transmission mechanism and a third transmission mechanism, the input end of the output shaft is connected with a second transmission mechanism, the third transmission mechanism is used for driving the outer sleeve 5 to rotate relative to the sleeve shell 7 to complete the rotation of the cutting tool 1 around the axis of the outer cylindrical surface of the outer sleeve 5, the first transmission mechanism is used for driving the outer sleeve 5 to move back and forth relative to the axis of the sleeve shell 7 to complete the feeding motion of the cutting tool 1, and the second transmission mechanism is used for driving the output shaft to rotate, the rotation of the tool 1 is completed.
As shown in fig. 2, the output section of the outer sleeve 5 is in an eccentric structure, that is, the axis of the outer cylindrical surface of the outer sleeve 5 and the axis of the inner hole of the output section of the outer sleeve 5 have a certain eccentric amount e0The middle section and the input section are of a coaxial structure, namely the axis of the outer cylindrical surface of the middle section and the input section is concentric with the axis of the inner hole of the middle section and the input section of the outer sleeve 5, the output shaft comprises a main shaft 2 and an inner sleeve 3 with an eccentric structure, the main shaft 2 is sleeved in the inner hole of the inner sleeve 3 through a main shaft bearing 4, namely the axis of the outer cylindrical surface of the main shaft and the axis of the inner hole have a certain eccentric amount en。
The first transmission mechanism, the second transmission mechanism and the third transmission mechanism are all connected to the sleeve shell 7 through connecting pieces.
The first transmission mechanism comprises a first motor 8 and a screw rod 11, the first motor 8 is horizontally arranged on the sleeve shell 7, the output end of the first motor is connected with the screw rod 11 through a screw rod coupler 9, one end of the screw rod 11 is arranged in an installation hole of a screw rod support seat 10, the other end of the screw rod 11 is sleeved in a screw rod nut 15, the screw rod support seat 10 is horizontally arranged on the sleeve shell 7, and the screw rod nut 15 is arranged on a flat movable plate 13;
the second transmission mechanism comprises a second motor 12 and a transmission shaft 21, the output end of the second motor 12 is connected with the input end of the transmission shaft 21, and the output end of the transmission shaft 21 is connected with the input end of the main shaft 2;
the third transmission mechanism comprises a third motor 25 and a first synchronous toothed belt, a third synchronous toothed belt wheel 19 is installed at the input end of the outer sleeve 5, and the third synchronous toothed belt wheel 19 is connected with a fourth synchronous toothed belt wheel 20 installed at the output end of the third motor 25 through the first synchronous toothed belt;
the outer side of the input section of the outer sleeve 5 is connected with the translation plate 13 through a revolution bearing 23.
The second motor 12 and the third motor 25 are both mounted on the translation plate 13, the input end of the transmission shaft 21 is mounted with a second synchronous toothed belt pulley 18, and the second synchronous toothed belt pulley 18 is connected with a first synchronous toothed belt pulley 17 mounted on the output end of the second motor 12 through a second synchronous toothed belt.
The second transmission mechanism further comprises an encoder 16 for measuring the rotating speed of the spindle 2, the encoder 16 is mounted at the output end of the second motor 12 or the output end of the transmission shaft 21, and a shell of the encoder 16 is fixed on the translation plate 13 through an encoder supporting seat 14.
The transmission shaft 21 is installed at the input section of the outer sleeve 5 through a transmission bearing 22, the output end circular shaft of the transmission shaft 21 is connected with the input end of a universal joint coupler 28 through a key, and the output end of the universal joint coupler 28 is connected with the input end of the main shaft 2. The universal joint coupler 28 is a double cross shaft type universal joint coupler and is positioned in an inner hole at the middle section of the outer sleeve 5, and the structure characteristics of the universal joint coupler are that the two connected shafts are not in the same axis by using the mechanism, the two linked shafts can continuously rotate under the condition of axis deviation, and the torque and the motion are reliably transmitted. The universal joint coupler 28 is characterized in that two ends of the universal joint coupler 28 are respectively connected with the spindle 2 and the transmission shaft 21, the axis of the spindle 2 and the axis of the outer cylindrical surface of the output section of the outer sleeve 5 have a certain eccentric amount e, namely the eccentric amount of the tool 1 is e, and the axis of the transmission shaft 21 is concentric with the axis of the outer cylindrical surface of the outer sleeve 5, so that the universal joint coupler can realize transmission between the spindle 2 and the transmission shaft 21 with large eccentric amount.
The device further comprises an optical axis 26, one end of the optical axis 26 is fixedly arranged on the sleeve shell 7, the other end of the optical axis 26 is sleeved in an optical axis sliding block 24, the optical axis sliding block 24 is arranged on the translation plate 13, and the optical axis 26 is used for enabling the translation plate 13 to keep a vertical state, namely, the translation plate can only move in the axial direction of the cutter 1 but can not rotate.
The outer side of the output end of the sleeve shell 7 is fixed with a shell 29 through a flange, and handles 27 are arranged on two sides of the shell 29. And a positioning shaft sleeve 30 is fixed on the front side of the flange and is used for being matched with a clamp for clamping a workpiece to complete positioning.
The specific use method of the invention is as follows: adjusting the eccentricity e of the cutter 1 relative to the outer cylindrical surface of the outer sleeve 5, specifically, the spiral hole milling unit is provided with the outer sleeve 5 with a fixed eccentricity and a plurality of output shafts with different eccentricities, and the eccentricity of the axis of the outer cylindrical surface of the outer sleeve 5 and the axis of the inner hole of the output section of the outer sleeve 5 is e0The eccentric amount of the outer cylindrical surface axis and the inner hole axis of the output shaft is enAn eccentricity of e0The outer sleeve 5 can be provided with a plurality of mounting holes with different eccentric magnitudes en(e1,e2,e3…) according to the eccentric value e to be adjusted, the required output shaft is selected to adjust the eccentric value, namely the adjustable eccentric value range is enlarged. And calculating the eccentricity adjusting range of the spiral hole milling unit when different output shafts are installed according to the eccentricity of the outer sleeve 5 and the eccentricity of the output shaft, selecting the corresponding output shaft, adjusting the relation between the inner sleeve 3 and the outer sleeve 5 of the output shaft, and fixing the output shaft.
The working principle of the revolution motion of the portable spiral hole milling unit is as follows: the third motor 25 drives the outer sleeve 5 to rotate relative to the sleeve shell 7 and the translation plate 13 through the action of the synchronous toothed belt wheel and the third synchronous toothed belt, the outer sleeve 5 and the inner sleeve 3 keep relatively static, and the eccentricity of the cutter 1 relative to the outer cylindrical surface of the output section of the outer sleeve 5 keeps constant e, so that the revolution motion of the cutter 1 is realized.
The relation between the output shaft and the outer sleeve 5 is adjusted again, the fixed relation between the inner sleeve 3 and the outer sleeve 5 is cancelled, the output shaft is rotated to enable the output shaft and the outer sleeve 5 to generate relative rotation, namely the relative position between the outer sleeve 5 and the output shaft is changed, the relative rotation angle theta between the outer sleeve 5 and the output shaft is adjusted, the eccentric amount of the cutter 1 relative to the outer cylindrical surface of the outer sleeve 5 is changed, and then different eccentric amounts of the cutter 1 are obtained
e has a value range of | en-e0|≤e≤|en+e0After the angle adjustment is completed, the output shaft and the outer sleeve 5 are fixed.
The working principle of the feeding motion of the portable spiral hole milling unit is as follows: the first motor 8 drives the translation plate 13 to move in the axial direction through the action of the screw rod 11, and further drives the outer sleeve 5 to move in the axial direction relative to the sleeve housing 7, so that the axial feed motion of the tool 1 is realized.
The working principle of the rotation of the main shaft 2 of the portable spiral hole milling unit is as follows: the second motor 12 drives the transmission shaft 21 to rotate under the action of the synchronous toothed belt wheel and the second synchronous toothed belt, the transmission shaft 21 which is coaxial with the outer cylindrical surface of the outer sleeve 5 transmits power to the spindle 2 which is eccentric to the outer cylindrical surface of the outer sleeve 5 through the universal joint coupler 28, the spindle 2 is driven to rotate, the rotary motion of the cutter 1 is realized, and the encoder 16 detects the real-time rotating speed of the rotation of the cutter 1. In the process that the second motor 12 drives the transmission shaft 21 to rotate, as the axial position of the transmission shaft 21 is always unchanged when the third motor 25 drives the outer sleeve 5 to rotate, the second motor 12 is convenient to transmit power to the transmission shaft 21 through the synchronous toothed belt wheel.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A portable helical milling unit, comprising: the cutter, the output shaft, the outer sleeve, the sleeve shell and a plurality of transmission mechanisms used for providing power, the output shaft is sleeved in an inner hole of an output section of the outer sleeve in a replaceable manner, the output shaft and the outer sleeve both have preset eccentric amounts, the cutter is connected to the output side of the output shaft, the output shaft is detachably connected in the outer sleeve, the outer sleeve is installed in the sleeve shell through a sliding bearing, the input side of the outer sleeve is connected with a first transmission mechanism and a third transmission mechanism, the input end of the output shaft is connected with a second transmission mechanism, the third transmission mechanism is used for driving the outer sleeve to rotate relative to the sleeve shell to complete the rotation of the cutter around the axis of the outer cylindrical surface, the first transmission mechanism is used for driving the outer sleeve to move back and forth relative to the axis direction of the sleeve shell to complete the feeding motion of the cutter, and the second transmission mechanism is used for driving the output shaft to rotate, completing the rotation of the cutter;
the output section of the outer sleeve is of an eccentric structure, namely the axis of the outer cylindrical surface of the outer sleeve and the axis of the inner hole of the output section of the outer sleeve have a certain eccentric amount e0The middle section and the input section are of coaxial structure, namely the axis of the outer cylindrical surface is concentric with the axis of the inner hole of the middle section of the outer sleeve and the input section, the output shaft comprises a main shaft and an inner sleeve with an eccentric structure, namely the axis of the outer cylindrical surface of the output shaft and the axis of the inner hole have a certain eccentric amount enThe main shaft is sleeved in an inner hole of the inner sleeve through a main shaft bearing;
the transmission shaft of the second transmission mechanism is installed at the input section of the outer sleeve through a transmission bearing, the output end circular shaft of the transmission shaft is connected with the input end of the universal joint coupler through a key, and the output end of the universal joint coupler is connected with the input end of the main shaft.
2. The portable helical milling unit of claim 1, wherein the first, second and third gears are each connected to the sleeve housing by a connector.
3. The portable spiral hole milling unit according to claim 1 or 2, wherein the first transmission mechanism comprises a first motor and a lead screw, the first motor is horizontally installed on the sleeve housing, the output end of the first motor is connected with the lead screw through a lead screw coupler, one end of the lead screw is installed in the installation hole of the lead screw support seat, the other end of the lead screw is sleeved in a lead screw nut, the lead screw support seat is horizontally installed on the sleeve housing, and the lead screw nut is installed on the flat movable plate;
the second transmission mechanism comprises a second motor and a transmission shaft, the output end of the second motor is connected with the input end of the transmission shaft, and the output end of the transmission shaft is connected with the input end of the main shaft;
the third transmission mechanism comprises a third motor and a first synchronous toothed belt, a third synchronous toothed belt wheel is mounted at the input end of the outer sleeve, and the third synchronous toothed belt wheel is connected with a fourth synchronous toothed belt wheel mounted at the output end of the third motor through the first synchronous toothed belt;
the outer side of the input section of the outer sleeve is connected with the translation plate through a revolution bearing.
4. The portable helical milling unit of claim 3, wherein the second motor and the third motor are both mounted on the translation plate, and the input end of the drive shaft is mounted with a second timing belt pulley, the second timing belt pulley being connected to a first timing belt pulley mounted at the output end of the second motor via a second timing belt.
5. The portable helical milling unit of claim 3, wherein the second drive mechanism further comprises an encoder for measuring the rotational speed of the spindle, the encoder being mounted at the output of the second motor or the output of the drive shaft, the housing of the encoder being secured to the translational plate by an encoder support block.
6. The portable helical milling unit of claim 3, further comprising an optical axis, wherein one end of the optical axis is fixedly mounted on the sleeve housing, the other end of the optical axis is sleeved in an optical axis slider, the optical axis slider is mounted on the translation plate, and the optical axis is used for keeping the translation plate in a vertical state, namely, the optical axis can only move in the axial direction of the cutter but can not rotate.
7. The portable helical milling unit of claim 1, wherein the outer side of the output end of the sleeve housing is fixed with the housing by a flange, and handles are mounted on both sides of the housing.
8. The portable helical milling unit of claim 7, wherein a locating sleeve is fixed to the front side of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313047.9A CN111482638B (en) | 2020-04-20 | 2020-04-20 | Portable spiral hole milling unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313047.9A CN111482638B (en) | 2020-04-20 | 2020-04-20 | Portable spiral hole milling unit |
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| CN111482638A CN111482638A (en) | 2020-08-04 |
| CN111482638B true CN111482638B (en) | 2021-09-28 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719505B2 (en) * | 1999-09-01 | 2004-04-13 | Novator Ab | Orbital hand tool apparatus for drilling |
| CN102689040B (en) * | 2012-05-15 | 2015-02-11 | 上海飞机制造有限公司 | Hole helical milling device |
| CN106077774B (en) * | 2016-07-07 | 2018-01-30 | 大连理工大学 | A kind of ultrasonic helical milling device and processing method |
| CN109954908A (en) * | 2017-12-22 | 2019-07-02 | 西安增材制造国家研究院有限公司 | Portable punching device and its application method |
| CN108927557B (en) * | 2018-08-17 | 2024-02-13 | 西安增材制造国家研究院有限公司 | Spiral hole milling device and method |
| CN110216479B (en) * | 2019-05-28 | 2021-03-16 | 大连理工大学 | Drilling and milling composite automatic hole making device |
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