CN112872437A - Portable spiral hole milling device - Google Patents

Portable spiral hole milling device Download PDF

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Publication number
CN112872437A
CN112872437A CN201911199609.5A CN201911199609A CN112872437A CN 112872437 A CN112872437 A CN 112872437A CN 201911199609 A CN201911199609 A CN 201911199609A CN 112872437 A CN112872437 A CN 112872437A
Authority
CN
China
Prior art keywords
main shaft
eccentric sleeve
spindle
worm
milling device
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.)
Pending
Application number
CN201911199609.5A
Other languages
Chinese (zh)
Inventor
姜丽萍
张烘州
何方舟
薛雷
袁益楚
黄稳
于建元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commercial Aircraft Corp of China Ltd
Shanghai Aircraft Manufacturing Co Ltd
Original Assignee
Commercial Aircraft Corp of China Ltd
Shanghai Aircraft Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commercial Aircraft Corp of China Ltd, Shanghai Aircraft Manufacturing Co Ltd filed Critical Commercial Aircraft Corp of China Ltd
Priority to CN201911199609.5A priority Critical patent/CN112872437A/en
Publication of CN112872437A publication Critical patent/CN112872437A/en
Pending legal-status Critical Current

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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
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10Arrangements for cooling or lubricating tools or work
    • 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
    • B23Q15/00Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/013Control or regulation of feed movement
    • B23Q15/02Control or regulation of feed movement according to the instantaneous size and the required size of the workpiece acted upon

Abstract

The invention relates to the technical field of spiral hole milling, and discloses a portable spiral hole milling device. Comprises a shell bracket; the main shaft rotation mechanism comprises a main shaft, a cutter is detachably connected to the main shaft, and the main shaft can rotate along the central axis of the main shaft; the main shaft revolution mechanism is arranged on the shell support and sleeved on the main shaft rotation mechanism, and the main shaft revolution mechanism can drive the main shaft to revolve around the central axis of the main shaft revolution mechanism; the feeding mechanism is arranged on the main shaft revolution mechanism and can adjust the feeding amount of the main shaft; and the radial eccentricity adjusting mechanism adjusts the eccentricity by adjusting the angle between the main shaft revolution mechanism and the main shaft rotation mechanism. The invention solves the problems of difficult processing of composite materials, poor hole making precision and quality, long time for hole making process and difficult matching of a large number of cutters and technological parameters in the technical field of aerospace.

Description

Portable spiral hole milling device
Technical Field
The invention relates to the technical field of spiral hole milling, in particular to a portable spiral hole milling device.
Background
The rivet connection and the bolt connection are two main mechanical connection modes in the aircraft assembly process, but the rivet connection and the bolt connection have the common characteristic that a connection hole needs to be processed in advance on two connected parts, so the aircraft assembly hole manufacturing has the characteristics of large hole manufacturing quantity, high requirements on precision and processing quality, poor processing material manufacturability, large size of processed parts and the like. The conventional drilling process at present cannot meet the number of holes required for an aircraft.
In the traditional drilling process, the linear velocity of the center of the main shaft is 0, namely the center of the drill bit does not participate in cutting, the material in the center area of the hole is completely extruded and removed by the downward thrust of a machine, the axial force borne by the drill bit is very large, and when difficult-to-machine materials such as aluminum alloy, titanium alloy and the like are machined, the wear failure speed of the cutter is very high. The traditional drilling process is a continuous cutting process, a cutting edge is always in contact with a workpiece, the surface temperature of the workpiece is continuously increased in the continuous cutting process, the abrasion failure of a cutter is aggravated, and the quality of a machined surface is reduced.
Disclosure of Invention
The invention aims to provide a portable spiral hole milling device, which mainly solves the problems of difficult processing of composite materials, poor hole making precision and quality, long time for hole making process and difficult matching of a large number of cutters and technological parameters in the technical field of aerospace.
In order to achieve the purpose, the invention adopts the following technical scheme:
provided is a portable spiral hole milling device, comprising:
a housing bracket;
the main shaft rotation mechanism comprises a main shaft, a cutter is detachably connected to the main shaft, and the main shaft can rotate along the central axis of the main shaft;
the spindle revolution mechanism is arranged on the shell support and sleeved on the spindle rotation mechanism, and the spindle revolution mechanism can drive the spindle to revolve around the central axis of the spindle revolution mechanism;
the feeding mechanism is arranged on the main shaft revolution mechanism and can adjust the feeding amount of the main shaft;
and the radial eccentricity adjusting mechanism adjusts the eccentricity by adjusting the angle between the main shaft revolution mechanism and the main shaft rotation mechanism.
Preferably, the spindle rotation mechanism further includes:
the inner eccentric sleeve is sleeved on the main shaft and synchronously rotates with the main shaft, and the main shaft revolution mechanism can drive the inner eccentric sleeve and the main shaft to synchronously revolve;
the output end of the first driving piece is connected to one end of the main shaft through an Oldham coupling, and the other end of the main shaft is connected with the cutter.
Preferably, the main shaft revolution mechanism includes:
the outer eccentric sleeve is sleeved on the inner eccentric sleeve;
the second driving piece is arranged on the shell bracket, and the output end of the second driving piece is connected with the driving belt wheel;
a driven pulley provided to the outer eccentric sleeve;
the synchronous toothed belt is connected to the driving belt wheel and the driven belt wheel, and the second driving piece can drive the outer eccentric sleeve to drive the inner eccentric sleeve and the main shaft to revolve.
Preferably, the outer eccentric sleeve rotates relative to the housing bracket through a bearing.
Preferably, the radial eccentricity amount adjusting mechanism includes:
the turbine is arranged on the end surfaces of the main shaft and the inner eccentric sleeve close to one end of the main shaft clamping tool;
the worm is meshed with the worm wheel, the worm is arranged on the outer eccentric sleeve, and the central axis of the worm wheel is perpendicular to the central axis of the worm.
Preferably, the worm wheel and the worm are both provided with an adjusting pointer and a dial, and the adjusting pointer is used for indicating scales on the dial.
Preferably, the first drive member is an electric or pneumatic motor.
Preferably, the second drive member is an electric or pneumatic motor.
Preferably, the feeding mechanism includes:
a support frame;
the third driving piece is connected to the supporting frame;
one end of the screw rod is connected to the output end of the third driving piece, and the other end of the screw rod is arranged on the support frame;
and the lead screw sliding block is matched with the lead screw to slide on the lead screw, and the lead screw sliding block is connected to the shell bracket.
Preferably, the outer eccentric sleeve and the inner eccentric sleeve are fastened by a screw.
The invention has the beneficial effects that: the portable spiral hole milling device provided by the invention has the advantages that by utilizing the main shaft rotation mechanism and the main shaft revolution mechanism, when a cutter mounted on the main shaft is used for processing a hole, the cutter can rotate and also revolve, when the material in the central region of the hole is processed, the cutter revolves while rotating, the cutter can sequentially and continuously cut in one surface of the region range of the hole to be processed, and the feeding assembly is used for controlling the cutting depth of the cutter to the hole to be processed once. Compared with the method that a forming hole is extruded and cut only by the thrust of a cutter, the axial force of the cutter is reduced, the abrasion of the cutter is reduced, in the machining process, the cutter has revolution due to the rotation in the hole machining process, only part of cutting edges of the cutter are in contact with a workpiece, the part of the cutting edges which do not work has heat dissipation time, the temperature of the cutter can be reduced, the service life of the cutter is prolonged, the production cost is reduced, meanwhile, in the machining process, the cutter just contacts the position of the machined cutting edges of the workpiece during the rotation and revolution, the subsequent cutting edges still carry out repeated machining paths, and the machining quality of the hole in the workpiece is improved.
Above-mentioned portable spiral hole milling device is applied to aerospace technical field combined material's spot facing work, and the system hole is convenient, improves system hole efficiency simultaneously, and it is long when reducing the system hole, need not to use the processing in the hole in a large amount of cutters can realize different apertures, can adapt to the hole of processing different diameters through a cutter.
Drawings
FIG. 1 is a schematic structural diagram of a portable helical milling device of the present invention;
FIG. 2 is a cross-sectional view of the portable helical milling device of the present invention;
fig. 3 is a schematic view showing the relative positional relationship of the main shaft, the inner eccentric sleeve and the outer eccentric sleeve of the present invention.
In the figure:
1. a housing bracket;
2. a spindle rotation mechanism; 21. a main shaft; 210. a tool holder bore; 22. an inner eccentric sleeve; 23. a first driving member; 24. an Oldham coupling;
3. a main shaft revolution mechanism; 31. a second driving member; 32. a driven pulley; 33. a synchronous toothed belt; 34. an outer eccentric sleeve; 35. a driving pulley; 36. a screw;
4. a feed mechanism; 41. a support frame; 42. a third driving member; 43. a lead screw; 44. a lead screw slider; 45. a coupling;
5. a radial eccentricity adjusting mechanism; 51. a turbine; 52. a worm; 53. a turbine dial.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The airplane assembly hole making has the characteristics of large hole making quantity, high requirements on precision and processing quality, poor processing material manufacturability, large size of processed parts and the like. The conventional drilling process at present cannot meet the number of holes required for an aircraft. In the traditional drilling process, the linear velocity of the center of the main shaft is 0, namely the center of the drill bit does not participate in cutting, the material in the center area of the hole is completely extruded and removed by the downward thrust of a machine, the axial force borne by the drill bit is very large, and when difficult-to-machine materials such as aluminum alloy, titanium alloy and the like are machined, the wear failure speed of the cutter is very high. The traditional drilling process is a continuous cutting process, a cutting edge is always in contact with a workpiece, the surface temperature of the workpiece is continuously increased in the continuous cutting process, the abrasion failure of a cutter is aggravated, and the quality of a machined surface is reduced.
The invention provides a portable spiral hole milling device, which mainly solves the problems of difficult processing of composite materials, poor hole making precision and quality, long time for hole making process, difficult matching of a large number of cutters and technological parameters and the like in the technical field of aerospace.
As shown in fig. 1 and 2, fig. 2 is a sectional view of a portable helical milling device, which includes a housing holder 1, a spindle rotation mechanism 2, a spindle revolution mechanism 3, a feeding mechanism 4, and a radial eccentricity adjusting mechanism 5, wherein the spindle revolution mechanism 3 is disposed on the housing holder 1 and is sleeved on the spindle rotation mechanism 2, and the spindle rotation mechanism 2 can rotate and revolve around a central axis of the spindle revolution mechanism 3.
With reference to fig. 1 and 2, the following describes the specific structure and connection relationship of the spindle rotation mechanism 2, as follows:
the spindle rotation mechanism 2 comprises a spindle 21, an inner eccentric sleeve 22 and a first driving part 23, wherein the output end of the first driving part 23 is connected to one end of the spindle 21 through an oldham coupling 24, and a tool clamp hole 210 is machined in the other end of the spindle 21 and used for installing a tool. The first driving part 23 can drive the main shaft 21 and the cutter to rotate on the axes thereof, and the adoption of the Oldham coupling 24 for connection can eliminate the non-concentricity between the output shaft of the first driving part 23 and the main shaft 21 and prevent the axial runout of the main shaft 21 during rotation. In this embodiment, the cutter is a milling cutter. The first drive member 23 is an electric or pneumatic motor.
The main shaft 21 is installed in a through hole of the inner eccentric sleeve 22, and the main shaft 21 and the inner eccentric sleeve 22 are fixed together through a first fastening piece and can rotate synchronously. Wherein the central axis of the through hole of the inner eccentric sleeve 22 does not coincide with the central axis of the outer contour of the inner eccentric sleeve 22. The first fastener in this embodiment is a pin or screw.
With reference to fig. 1 and 2, a specific structure and a connection relationship of the main shaft revolution mechanism 3 will be described in detail as follows:
the main shaft revolution mechanism 3 includes a second driving member 31, a driving pulley 35, a driven pulley 32, a timing belt 33 and an outer eccentric sleeve 34, wherein the second driving member 31 is disposed on the housing bracket 1, an output end of the second driving member 31 is connected to the driving pulley 35, the driven pulley 32 is disposed on the outer eccentric sleeve 34, the driven pulley 32 is fixedly connected to the outer eccentric sleeve 34 by a second fastening member, and the second fastening member is a pin or a screw. The driving pulley 35 and the driven pulley 32 are driven by a timing belt 33. The outer eccentric sleeve 34 is sleeved on the inner eccentric sleeve 22, and the second driving member 31 can drive the outer eccentric sleeve 34 to drive the inner eccentric sleeve 22 and the main shaft 21 to revolve. The second driving member 31 in this embodiment is an electric motor or a pneumatic motor.
Further specifically, the outer eccentric sleeve 34 is rotatably connected to the housing bracket 1 through a bearing. In this embodiment, the bearings are angular bearings, and the two sets of bearings are respectively sleeved at two ends of the outer eccentric sleeve 34. The use of the angular bearing enables the axial force of the outer eccentric sleeve 34 to be borne.
When the spindle rotation mechanism 2 performs rotation and revolution, the working principle is as follows:
the inner eccentric sleeve 22 is sleeved on the main shaft 21, and the first driving member 23 drives the main shaft 21 and the inner eccentric sleeve 22 to rotate, i.e. the cutter rotates.
When the portable spiral hole milling device works, the relative positions of the inner eccentric sleeve 22 and the outer eccentric sleeve 34 are fixed, and the inner eccentric sleeve 22 is sleeved with the outer eccentric sleeve 34, so that when the second driving piece 31 drives the outer eccentric sleeve 34 to rotate relative to the shell support 1, the outer eccentric sleeve 34 can drive the inner eccentric sleeve 22 and the main shaft 21 to synchronously revolve. At this time, the inner eccentric sleeve 22 and the outer eccentric sleeve 34 can only rotate around the central axis of the outer eccentric sleeve 34, and cannot move axially. Specifically, the inner eccentric sleeve 22 and the outer eccentric sleeve 34 may be fastened by a screw 36 during revolution, and when the eccentricity amount is adjusted, the screw 36 is loosened to relatively rotate the inner eccentric sleeve 22 and the outer eccentric sleeve 34, and the eccentricity amount is adjusted by adjusting an angle therebetween. During adjustment, the inner eccentric sleeve 22 and the main shaft 21 are simultaneously angularly adjusted relative to the outer eccentric sleeve 34.
With reference to fig. 1, the following describes the specific structure and connection relationship of the radial eccentricity adjusting mechanism 5, as follows:
the radial eccentricity adjusting mechanism 5 comprises a worm 52 and a worm wheel 51, wherein the worm wheel 51 is fixed on the right end surfaces of the main shaft 21 and the inner eccentric sleeve 22 and is meshed with the worm wheel 51, the worm 52 is fixed on the outer eccentric sleeve 34, the axis of the worm 52 is vertical to the central axis direction of the main shaft 21, and the worm 52 cannot move along the self axial direction and can only rotate around the axial direction. The worm wheel 51 and the worm 52 are both provided with an adjusting pointer and a dial, and the adjusting pointer is used for indicating scales on the dial. Specifically, the end of the worm 52 is provided with a worm adjustment pointer and a worm dial, the right end face of the worm wheel 51 is provided with a worm wheel adjustment pointer and a worm wheel dial 53, the angle between the main shaft 21 and the outer eccentric sleeve 34 is adjusted by adjusting the worm 52 by means of the mutual engagement between the worm 52 and the worm wheel 51 to adjust the amount of eccentricity required during machining, and the required amount of eccentricity is read from the worm dial and the worm wheel dial 53. The dials on the worm wheel 51 and the worm 52 can display the angle value between the main shaft 21 and the outer eccentric sleeve 34, and can also display the eccentric amount, and the two have a one-to-one correspondence relationship. In this embodiment, the eccentric amount is displayed on the dial.
With reference to fig. 1, the following describes the specific structure and connection relationship of the feeding mechanism 4, as follows:
the feeding mechanism 4 comprises a supporting frame 41, a third driving member 42, a lead screw 43, a lead screw slider 44 and a coupler, wherein the output end of the third driving member 42 is connected to the lead screw 43 through the coupler 45, the lead screw 43 is rotatably connected to the lead screw slider 44, and the lead screw slider 44 is connected to the shell bracket 1. When the third driving member 42 works, the power is transmitted to the lead screw 43 through the coupler and drives the lead screw 43 to rotate, and the lead screw 43 drives the lead screw slider 44 to linearly slide on the guide rail, so as to drive the spindle rotation mechanism 2, the spindle revolution mechanism 3 and the shell bracket 1 to synchronously move, thereby achieving the purpose of adjusting the feeding amount of the tool. Specifically, the screw 43 is a ball screw 43. In this embodiment, the third driving member 42 is an electric motor.
As shown in fig. 3, fig. 3 is a schematic diagram showing a relative positional relationship among the main shaft 21, the inner eccentric sleeve 22, and the outer eccentric sleeve 34. In fig. 3, O1 is the center of the main shaft 21, O2 is the center of the inner eccentric sleeve 22, and O is the center of the outer eccentric sleeve 34. The O1O2 is a connecting line of the centers of the main shaft 21 and the inner eccentric sleeve 22, the distance between the two is a fixed value, and in the process of adjusting the eccentric amount, the relative angle between the inner eccentric sleeve 22 and the outer eccentric sleeve 34 is adjusted, namely the inner eccentric sleeve 22 and the main shaft 21 rotate relative to the outer eccentric sleeve 34 at the same time, so that the adjustment of the eccentric amount can be realized.
The invention utilizes the spiral hole milling mode to obviously improve the processing quality and the processing efficiency of the hole and overcome the defects of the traditional drilling process.
In this embodiment, a milling cutter of Φ 6 is used to machine the holes of Φ 8 and Φ 10, and the specific machining process is as follows:
1. firstly, a tool is arranged in a tool clamp hole 210 on the right end surface of the main shaft 21 through a tool clamp, the required eccentric amount is determined according to the selected tool and the diameter of the hole to be machined, the eccentric amount e is adjusted by rotating the worm 52, in the embodiment, a hole of phi 8 is machined firstly, the worm wheel 51 and the worm 52 are adjusted, and the scales on the worm dial and the worm wheel dial 53 are both 1 mm.
2. This device needs the manual work to move the position in the hole of processing, can fix also can hand the processing that carries out the hole, starts portable spiral milling hole dress, carries out the processing in hole.
3. If the aperture of the next hole to be processed is not changed, the device is only required to be moved to the position of the hole to be processed, and the hole is processed until the hole is processed.
4. If the aperture of the next hole to be processed is phi 10, the worm 52 is rotated to adjust the eccentricity, so that the scales on the worm dial and the turbine dial 53 are both 2 mm; and (5) repeatedly executing the step 2 and the step 3 until the hole machining is completed.
The device can be used for machining the spiral milling hole by installing a handheld mechanism and a fixing mechanism on the shell bracket 1.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A portable helical milling device, comprising:
a housing support (1);
the spindle rotation mechanism (2), the spindle rotation mechanism (2) comprises a spindle (21), a cutter is detachably connected to the spindle (21), and the spindle (21) can rotate by the central axis of the spindle;
the main shaft revolution mechanism (3) is arranged on the shell support (1), the main shaft revolution mechanism (3) is sleeved on the main shaft rotation mechanism (2), and the main shaft revolution mechanism (3) can drive the main shaft (21) to revolve around the central axis of the main shaft revolution mechanism (3);
a feeding mechanism (4), wherein the main shaft revolution mechanism (3) is arranged on the feeding mechanism (4), and the feeding mechanism (4) can adjust the feeding amount of the main shaft (21);
and the radial eccentric amount adjusting mechanism (5) adjusts the eccentric amount by adjusting the angle between the main shaft revolution mechanism (3) and the main shaft rotation mechanism (2).
2. The portable helical milling device according to claim 1, wherein the spindle rotation mechanism (2) further comprises:
the inner eccentric sleeve (22) is sleeved on the main shaft (21), the inner eccentric sleeve (22) and the main shaft (21) synchronously rotate, and the main shaft revolution mechanism (3) can drive the inner eccentric sleeve (22) and the main shaft (21) to synchronously revolve;
and the output end of the first driving piece (23) is connected to one end of the main shaft (21) through an Oldham coupling (24), and the other end of the main shaft (21) is connected with the cutter.
3. The portable helical milling device according to claim 2, wherein the spindle revolution mechanism (3) comprises:
the outer eccentric sleeve (34) is sleeved on the inner eccentric sleeve (22);
the second driving piece (31) is arranged on the shell bracket (1), and the output end of the second driving piece (31) is connected with the driving belt wheel (35);
a driven pulley (32) provided to the outer eccentric sleeve (34);
the synchronous toothed belt (33) is connected to the driving belt wheel (35) and the driven belt wheel (32), and the second driving piece (31) can drive the outer eccentric sleeve (34) to drive the inner eccentric sleeve (22) and the main shaft (21) to revolve.
4. A portable helical milling apparatus according to claim 3, wherein the outer eccentric sleeve (34) is rotatable relative to the housing holder (1) by means of bearings.
5. The portable helical milling device according to claim 4, wherein the radial eccentricity adjusting mechanism (5) comprises:
the turbine (51) is arranged on the end surfaces of the main shaft (21) and the inner eccentric sleeve (22) close to one end of the main shaft (21) for clamping the cutter;
the worm (52) is meshed with the worm wheel (51), the worm (52) is arranged on the outer eccentric sleeve (34), and the central axis of the worm wheel (51) is perpendicular to the central axis of the worm (52).
6. Portable helical milling device according to claim 5, characterized in that said worm wheel (51) and said worm screw (52) are each provided with an adjustment pointer and a dial, said adjustment pointer being intended to indicate the scale on the dial.
7. A portable helical milling apparatus according to claim 2, wherein the first drive member (23) is an electric or pneumatic motor.
8. A portable helical milling apparatus according to claim 3, wherein the second drive member (31) is an electric or pneumatic motor.
9. Portable helical milling device according to claim 1, characterized in that said feed mechanism (4) comprises:
a support frame (41);
a third driving member (42) connected to the support frame (41);
one end of the lead screw (43) is connected to the output end of the third driving piece (42), and the other end of the lead screw (43) is arranged on the support frame (41);
the lead screw sliding block (44) is matched and slides on the lead screw (43), and the lead screw sliding block (44) is connected to the shell bracket (1).
10. The portable helical milling device according to claim 3, wherein the outer eccentric sleeve (34) and the inner eccentric sleeve (22) are securely connected by a screw (36).
CN201911199609.5A 2019-11-29 2019-11-29 Portable spiral hole milling device Pending CN112872437A (en)

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Application Number Priority Date Filing Date Title
CN201911199609.5A CN112872437A (en) 2019-11-29 2019-11-29 Portable spiral hole milling device

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Application Number Priority Date Filing Date Title
CN201911199609.5A CN112872437A (en) 2019-11-29 2019-11-29 Portable spiral hole milling device

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Publication Number Publication Date
CN112872437A true CN112872437A (en) 2021-06-01

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CN201911199609.5A Pending CN112872437A (en) 2019-11-29 2019-11-29 Portable spiral hole milling device

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114871825A (en) * 2022-06-21 2022-08-09 哈尔滨理工大学 Adjusting device of eccentric sleeve type spiral hole making equipment

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CN104439445A (en) * 2014-11-12 2015-03-25 大连理工大学 Spiral hole milling device capable of automatically adjusting hole diameter and working method of spiral hole milling device
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Publication number Priority date Publication date Assignee Title
US20030017017A1 (en) * 2001-07-20 2003-01-23 Linderholm Dag G. Numerically controlled orbital machining apparatus
CN102699403A (en) * 2012-06-21 2012-10-03 天津大学 Automatic spiral hole milling device
CN103192125A (en) * 2013-03-28 2013-07-10 大连理工大学 Portable spiral hole milling device and machining method
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Application publication date: 20210601