CN111482639B - Transmission mechanism of spiral hole milling device - Google Patents

Transmission mechanism of spiral hole milling device Download PDF

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Publication number
CN111482639B
CN111482639B CN202010313051.5A CN202010313051A CN111482639B CN 111482639 B CN111482639 B CN 111482639B CN 202010313051 A CN202010313051 A CN 202010313051A CN 111482639 B CN111482639 B CN 111482639B
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China
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output
shaft
axis
outer sleeve
transmission shaft
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CN202010313051.5A
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CN111482639A (en
Inventor
董志刚
康仁科
杨国林
郭东明
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Dalian University of Technology
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Dalian University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C9/00Details or accessories so far as specially adapted to milling machines or cutter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work
    • B23Q5/34Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission

Abstract

The invention provides a transmission mechanism of a spiral hole milling device. The invention comprises a cutter, an output shaft and an outer sleeve, wherein the output shaft is replaceably sleeved on an output section of the outer sleeve, the output section of the output shaft and the output section of the outer sleeve have preset eccentric amount, the invention also comprises a motor, a transmission shaft and a universal joint coupler, the output end of the motor is connected with the input end of the transmission shaft, the output end of the transmission shaft is connected with the input end of the output shaft through the universal joint coupler, and the axial distance between the motor and the axis of the transmission shaft is kept constant. The invention can overcome the defects of the traditional hole making device and realize the power transmission between the main shaft and the transmission shaft with a certain eccentricity, and because of the structural design that the axis of the transmission shaft is concentric with the axis of the outer cylindrical surface of the outer sleeve, the axial distance between the motor and the axis of the transmission shaft is constant, the power input in the revolution process of the cutter is realized, the mechanism is simple, the cost is lower, and the stability of the transmission of the rotating speed and the torque can be ensured.

Description

Transmission mechanism of spiral hole milling device
Technical Field
The invention relates to the technical field of hole making processing in aerospace craft assembly, in particular to a transmission mechanism of a spiral hole milling device.
Background
The principle of the spiral hole milling is that a special end mill is adopted, a cutter revolves around the axis of a processed hole while rotating at a high speed, and feeds in the direction of the axis of the processed hole, and finally a round hole with a diameter larger than that of the cutter 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. The design difficulty of the spiral hole milling device lies in the design of a transmission mechanism, and the transmission mechanism of the existing spiral hole milling device has the main problems that the structure is too complex, the device cost is increased, time and labor are wasted in the process of mounting the device, and the production efficiency is lower.
Disclosure of Invention
According to the technical problems, the invention provides a transmission mechanism of a spiral hole milling device, and the problems of complexity and high cost of the transmission mechanism of the spiral hole milling device in the prior art are solved through the structural design that the axis of a transmission shaft is concentric with the axis of the outer cylindrical surface of an outer sleeve. The technical means adopted by the invention are as follows:
the utility model provides a drive mechanism of spiral hole milling device, includes cutter, output shaft, outer sleeve, the suit is in outer sleeve output section with the output shaft changeably, output shaft and outer sleeve output section all have the eccentric quantity of predetermineeing, the cutter is connected in the output side of output shaft, still includes motor, transmission shaft and universal joint coupler, the output of motor links to each other with the input of transmission shaft, the output of transmission shaft passes through the universal joint coupler links to each other with the input of output shaft, the motor with the interaxial distance of transmission shaft axis keeps invariable.
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 a coaxial structure, namely the axis of the outer cylindrical surface of the middle section and the axis of the inner hole of the middle section and the input section of the outer sleeve are concentric, the universal joint coupler is arranged at the middle section of the outer sleeve, the transmission shaft is arranged at the input section of the outer sleeve, 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 en
Further, the motor and the transmission shaft ensure that the distance between the motor and the axis of the transmission shaft is kept constant through a synchronous belt mechanism, specifically, a second synchronous toothed belt wheel is installed at the input end of the transmission shaft, and the second synchronous toothed belt wheel is connected with a first synchronous toothed belt wheel installed at the output end of the motor through a synchronous toothed belt.
Further, the output end of the output shaft is provided with a cutter through a chuck.
Furthermore, the universal joint coupler is a double cross shaft type universal joint coupler.
Compared with the prior art, the invention has the following advantages:
the invention overcomes the defects of the traditional hole making device, realizes the power transmission between the main shaft and the transmission shaft with a certain eccentricity, has the advantages of constant axial distance between the motor and the transmission shaft due to the structural design that the axis of the transmission shaft is concentric with the axis of the outer cylindrical surface of the outer sleeve, realizes the power input in the revolution process of the cutter, simple mechanism, lower cost and capability of ensuring the stability of the transmission of the rotating speed and the torque.
Based on the reasons, the invention can be widely popularized in the technical field of hole making processing.
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 sectional view of a transmission mechanism of a helical hole milling device according to an embodiment of the present invention.
In the figure: 1. the synchronous gear type cutting machine comprises a cutter, 2 parts of an output shaft, 3 parts of an outer sleeve, 4 parts of a universal joint coupler, 5 parts of a transmission shaft, 6 parts of a first synchronous gear belt wheel, 7 parts of a second synchronous gear belt wheel and 8 parts of a motor.
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, the embodiment of the invention discloses a transmission mechanism of a spiral hole milling device, which comprises a cutter 1, an output shaft 2, an outer sleeve 3, a motor 8, a transmission shaft 5 and a universal joint coupler 4, wherein the cutter 1 is connected to the output side of the output shaft 2, the output shaft 2 is replaceably sleeved on the output section of the outer sleeve 3, the output sections of the output shaft 2 and the outer sleeve 3 have preset eccentricity, the output end of the motor 8 is connected with the input end of the transmission shaft 5, the output end of the transmission shaft 5 is connected with the input end of the output shaft 2 through the universal joint coupler 4, and the axial distance between the motor 8 and the axis of the transmission shaft 5 is kept constant.
The output section of the outer sleeve 3 is an eccentric structure, namely the axis of the outer cylindrical surface of the outer sleeve 3 and the axis of the inner hole of the output section of the outer sleeve 3 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 axis of the inner hole of the middle section and the input section of the outer sleeve 3 are concentric, the universal joint coupler 4 is arranged at the middle section of the outer sleeve 3, the transmission shaft 5 is arranged at the input section of the outer sleeve 3, the output shaft 2 comprises a main shaft and an inner sleeve with an eccentric structure, namely the axis of the outer cylindrical surface of the output shaft 2 and the axis of the inner hole have a certain eccentric amount en
The motor 8 and the transmission shaft 5 ensure that the distance between the axes of the motor 8 and the transmission shaft 5 is kept constant through a synchronous belt mechanism, specifically, a second synchronous toothed belt wheel 7 is installed at the input end of the transmission shaft 5, and the second synchronous toothed belt wheel 7 is connected with a first synchronous toothed belt wheel 6 installed at the output end of the motor 8 through a synchronous toothed belt.
The output end of the output shaft 2 is provided with a cutter 1 through a chuck.
The universal joint coupler 4 is a double cross shaft type universal joint coupler 4.
The universal joint coupler 4 is a double cross shaft type universal joint coupler and is positioned in an inner hole in the middle section of the outer sleeve 3, and the structure characteristics of the universal joint coupler are that the two shafts are not in the same axis by utilizing 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 spindle axis and the outer cylindrical surface axis of the outer sleeve 3 have a certain eccentricity, namely the eccentricity of the cutter 1, and the axis of the transmission shaft 5 is concentric with the outer cylindrical surface axis of the outer sleeve 3, so that the universal joint coupler 4 can realize transmission between the spindle and the transmission shaft 5 with larger eccentricity.
The specific use method of the invention is as follows: the eccentric amount of the cutter 1 relative to the outer cylindrical surface of the outer sleeve 3 is adjusted, specifically, the spiral hole milling device is provided with the outer sleeve 3 with a fixed eccentric amount and a plurality of output shafts 2 with different eccentric amounts, and the eccentric amount of the axis of the outer cylindrical surface of the outer sleeve 3 and the axis of the inner hole of the output section of the outer sleeve 3 is e0The eccentric amount of the axis of the outer cylindrical surface of the output shaft 2 and the axis of the inner hole thereof is enAn eccentricity of e0The outer sleeve 3 can be provided with different eccentric values en(e1,e2,e3...) and selecting the required output shaft 2 according to the eccentric value e to be adjusted to adjust the eccentric value.
After the preparation work is finished, the motor 8 drives the transmission shaft 5 to rotate under the action of the synchronous belt wheel and the synchronous cog belt, the transmission shaft 5 which is coaxial with the outer cylindrical surface of the outer sleeve 3 transmits power to a spindle which is eccentric to the outer cylindrical surface of the outer sleeve 3 through the universal joint coupler 4 to drive the spindle to rotate, the rotary motion of the cutter 1 is realized, and in the rotating process of the motor 8 driving the transmission shaft 5, due to the structural design that the axis of the transmission shaft 5 is concentric with the axis of the outer cylindrical surface of the outer sleeve 3, the axial distance between the motor 8 and the axis of the transmission shaft 5 is constant, and the power input in the revolution process of the cutter 1 is realized.
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 (4)

1. A transmission mechanism of a spiral hole milling device comprises a cutter, an output shaft and an outer sleeve, wherein the cutter is connected to the output side of the output shaft, the transmission mechanism is characterized in that the output shaft is sleeved on the output section of the outer sleeve in a replaceable manner, the output sections of the output shaft and the outer sleeve have preset eccentric amounts, the transmission mechanism further comprises a motor, a transmission shaft and a universal joint coupler, the output end of the motor is connected with the input end of the transmission shaft, the output end of the transmission shaft is connected with the input end of the output shaft through the universal joint coupler, and the distance between the motor and the axis of the transmission shaft is kept constant;
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 a coaxial structure, namely the axis of the outer cylindrical surface of the middle section and the axis of the inner hole of the middle section and the input section of the outer sleeve are concentric, the universal joint coupler is arranged at the middle section of the outer sleeve, the transmission shaft is arranged at the input section of the outer sleeve, 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 en
2. A drive mechanism of a helical milling device according to claim 1, wherein the motor and the drive shaft are kept at a constant axial distance from the axis of the drive shaft by a synchronous belt mechanism, and specifically, a second synchronous cog belt wheel is mounted at the input end of the drive shaft and connected with a first synchronous cog belt wheel mounted at the output end of the motor by a synchronous cog belt.
3. A drive mechanism for a helical milling apparatus according to claim 1, wherein the output end of the output shaft is provided with a cutter by means of a collet.
4. A drive mechanism for a helical milling apparatus according to claim 1, wherein the universal joint coupling is a double cross universal joint coupling.
CN202010313051.5A 2020-04-20 2020-04-20 Transmission mechanism of spiral hole milling device Active CN111482639B (en)

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CN113172477B (en) * 2021-03-25 2023-03-31 南京晓庄学院 Online measuring and controlling device and method for eccentricity of robot spiral hole milling cutter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192125A (en) * 2013-03-28 2013-07-10 大连理工大学 Portable spiral hole milling device and machining method
CN203956172U (en) * 2014-07-14 2014-11-26 大连交通大学 A kind of helical milling device
CN106077774A (en) * 2016-07-07 2016-11-09 大连理工大学 A kind of ultrasonic helical milling device and processing method
CN108927557A (en) * 2018-08-17 2018-12-04 西安增材制造国家研究院有限公司 A kind of helical milling device and method
CN110216479A (en) * 2019-05-28 2019-09-10 大连理工大学 A kind of compound automatic punching device of brill milling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6719505B2 (en) * 1999-09-01 2004-04-13 Novator Ab Orbital hand tool apparatus for drilling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192125A (en) * 2013-03-28 2013-07-10 大连理工大学 Portable spiral hole milling device and machining method
CN203956172U (en) * 2014-07-14 2014-11-26 大连交通大学 A kind of helical milling device
CN106077774A (en) * 2016-07-07 2016-11-09 大连理工大学 A kind of ultrasonic helical milling device and processing method
CN108927557A (en) * 2018-08-17 2018-12-04 西安增材制造国家研究院有限公司 A kind of helical milling device and method
CN110216479A (en) * 2019-05-28 2019-09-10 大连理工大学 A kind of compound automatic punching device of brill milling

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