CN111015253A - Five-axis structure of cam-type cradle - Google Patents
Five-axis structure of cam-type cradle Download PDFInfo
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- CN111015253A CN111015253A CN201911421380.5A CN201911421380A CN111015253A CN 111015253 A CN111015253 A CN 111015253A CN 201911421380 A CN201911421380 A CN 201911421380A CN 111015253 A CN111015253 A CN 111015253A
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- 238000009434 installation Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a five-axis structure of a cam type cradle, which comprises: the base is provided with a first mounting part and a second mounting part at two ends respectively, a first mounting cavity is arranged in the first mounting part, a second mounting cavity is arranged in the second mounting part, and the base can move in three directions; the two ends of the rotating shaft assembly are respectively connected with the first mounting part and the second mounting part; a tilt shaft assembly disposed within the first mounting cavity; and the tail seat is arranged in the second mounting cavity. According to the five-axis structure of the cam type cradle, the cradle rotates, the rotary table rotates and the base has three movement directions on the mechanism, so that the rotary table can move in five directions, different processing requirements can be met, and the rotating speed and the load capacity of the rotary table are improved.
Description
Technical Field
The invention relates to the technical field of numerical control machine tools, in particular to a cam type cradle five-axis structure.
Background
The inner parts of the existing numerical control indexing disc and the existing five-axis rotary table are basically in a worm gear transmission type structure, the joint points of an input part and an output part of the worm gear transmission type are installed in a meshing state, but certain gaps are required to be left between the joint points, if no gap exists, hard friction is generated between the joint points, so that self loss is caused, the sliding friction transmission is longer along with the use time, the friction gaps are increased, the gaps have great influence on the precision of a workpiece and the stability in machining, and the fact that the rotary indexing rotary table of the workpiece needs frequent reverse movement in machining is particularly obvious; when a workpiece is machined in indexing and positioning mode, the gap of the conventional numerical control indexing turntable increases along with the longer service time, regular maintenance and adjustment are needed, the limit speed borne by the copper worm gear is not high, and high-speed machining is difficult to realize; in the existing numerical control indexing rotary table, a bearing of an output shaft is basically arranged on the circular inner wall of the output shaft, the bearing is small, and the corresponding load capacity is small.
Disclosure of Invention
In view of this, the invention provides a five-axis structure of a cam-type cradle, which can realize that a rotary table moves in five directions and can meet different processing requirements.
According to the embodiment of the invention, the five-axis structure of the cam type cradle comprises: the base is provided with a first mounting part and a second mounting part at two ends respectively, a first mounting cavity is arranged in the first mounting part, a second mounting cavity is arranged in the second mounting part, and the base can move in three directions; the two ends of the rotating shaft assembly are respectively connected with the first mounting part and the second mounting part; a tilt shaft assembly disposed within the first mounting cavity; the tail seat is arranged in the second mounting cavity; wherein the rotating shaft assembly includes: the two ends of the cradle are movably connected with the first mounting part and the second mounting part respectively, and a third mounting cavity is arranged in the cradle; a turntable rotatably provided on the cradle; the first tower output shaft is arranged in the third mounting cavity and connected with the rotary table to drive the rotary table to rotate, and a plurality of needle roller bearings are arranged on the first tower output shaft; the first cam input shaft is pivotally arranged in the third mounting cavity and is perpendicular to the first tower output shaft, and a cam curved surface matched with the needle bearing is arranged on the first cam input shaft; the first driving piece is arranged in the third mounting cavity and is meshed with the first cam input shaft so as to drive the first cam input shaft to rotate; the tilt shaft assembly includes: the second tower type output shaft is arranged in the first mounting cavity and connected with one end of the cradle to drive the cradle to move, and a plurality of needle roller bearings are arranged on the second tower type output shaft; the second cam input shaft is pivotally arranged in the first mounting cavity and is perpendicular to the second tower output shaft, and a cam curved surface matched with the needle roller bearing is arranged on the second cam input shaft; a second driver engaged with the second cam input shaft for driving the second cam input shaft to rotate.
According to the five-axis structure of the cam type cradle, the cradle rotates, the rotary table rotates and the base has three movement directions on the mechanism, so that the rotary table can move in five directions, different processing requirements can be met, and the rotating speed and the load capacity of the rotary table are improved.
The five-axis structure of the cam-type cradle according to the present invention using the novel embodiment may also have the following additional technical features.
According to one embodiment of the invention, the five-axis structure of the wheeled cradle further comprises: and the brake assembly is arranged in the third mounting cavity and used for braking.
According to one embodiment of the invention, the tailstock comprises a bearing.
According to one embodiment of the present invention, the bassinet is formed in an arc-shaped structure with a downwardly concave middle portion.
According to one embodiment of the invention, the first cam input shaft and the first tower output shaft in combination each comprise: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes.
According to one embodiment of the invention, the combination of the second cam input shaft and the second tower output shaft comprises: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes.
According to one embodiment of the invention, the cam surface has a 360 ° rotational constant velocity surface.
According to one embodiment of the invention, the second drive element and the first drive element are each formed as a servomotor.
According to one embodiment of the present invention, the cradle is provided at the bottom thereof with an annular groove, and the brake assembly includes: the friction plate is connected with the first tower type output shaft; the driving piece is arranged in the annular groove; and the brake pad is formed into a ring-shaped piece and is connected with the cradle, and the brake pad is arranged above the driving piece and is used for being matched with the friction plate.
According to one embodiment of the present invention, the brake pad is bolted to the cradle.
Drawings
FIG. 1 is a schematic structural diagram of a five-axis structure of a cam-type cradle according to an embodiment of the invention;
fig. 2 is an internal structural view of a five-axis structure of a cam-type cradle according to an embodiment of the present invention;
fig. 3 is a schematic view of still another internal structure of a five-axis structure of a cam-type cradle according to an embodiment of the present invention;
FIG. 4 is an internal sectional view of a five-axis configuration of a cam-type cradle according to an embodiment of the present invention;
FIG. 5 is a further internal cross-sectional view of a five-axis configuration of a cam-type cradle according to an embodiment of the present invention;
fig. 6 is a partial enlarged view of P in fig. 5.
Reference numerals:
a five-axis structure 100 of the cam-type cradle;
a base 10; a bassinet 20; a turntable 30; a first cam input shaft 50; a first tower output shaft 51; a first driving member 52; a second cam input shaft 40; a second tower output shaft 41; a second driver 42; a tail stock 60; the friction plate 71; a brake pad 72; a drive member 73.
Detailed Description
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.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. 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 be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
First, a five-axis structure 100 of a cam-type cradle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The five-axis structure 100 of the cam-type cradle according to the embodiment of the present invention includes a base 10, a rotating shaft assembly, a tilting shaft assembly, and a tail block 60. Wherein the rotating shaft assembly comprises a bassinet 20, a turntable 30, a first cam input shaft 50, a first tower output shaft 51 and a first driving member 52, and the tilting shaft assembly comprises a second cam input shaft 40, a second tower output shaft 41 and a second driving member 42.
Specifically, as shown in fig. 1 to 6, a first installation part and a second installation part are respectively arranged at two ends of a base 10, a first installation cavity is arranged in the first installation part, a second installation cavity is arranged in the second installation part, the base 10 can move in three directions, two ends of a cradle 20 are respectively movably connected with the first installation part and the second installation part, a third installation cavity is arranged in the cradle 20, a turntable 30 is rotatably arranged on the cradle 20, a first tower output shaft 51 is arranged in the first installation cavity and connected with one end of the cradle 20 to drive the cradle 20 to move, a plurality of needle bearings are arranged on the first tower output shaft 51, a first cam input shaft 50 is pivotably arranged in the first installation cavity and is perpendicular to the first cam output shaft 51, a cam curved surface matched with the first cam input shaft 50 is arranged on the first cam input shaft 50, a first driving part 52 is engaged with the first cam input shaft 50 to drive the first cam input shaft 50 to rotate, the second tower output shaft 41 is arranged in the third mounting cavity and connected with the rotary table 30 to drive the rotary table 30 to rotate, a plurality of needle roller bearings are arranged on the second tower output shaft 41, the second cam input shaft 40 is pivotally arranged in the third mounting cavity and perpendicular to the second tower output shaft 41, a cam curved surface matched with the needle roller bearings is arranged on the second cam input shaft 40, the second driving piece 42 is arranged in the third mounting cavity and meshed with the second cam input shaft 40 to drive the second cam input shaft 40 to rotate, and the tail seat 60 is arranged in the second mounting cavity to be pivotally connected with the other end of the cradle 20.
In other words, the five-axis structure 100 of the cam-type cradle mainly comprises four parts, namely a base 10, a rotating shaft assembly, a tilting shaft assembly and a tail seat 60. The first driving member 52 drives the first cam input shaft 50 to rotate, the first cam input shaft 50 transmits power to the first tower output shaft 51, and the first tower output shaft 51 drives the rotary table 30 to rotate. The second driving member 42 drives the second cam input shaft 40 to rotate, the second cam input shaft 40 transmits power to the second tower output shaft 41, the second tower output shaft 41 drives the cradle 20 to rotate obliquely, and the turntable 30 is arranged on the cradle 20 and rotates along with the rotation of the cradle 20. Since the base 10 itself is mounted on a rail of a mechanism such as a machine tool, the base 10 can move in three (vertical) directions of a spatial rectangular coordinate system, for example, in a length direction, a width direction and a height direction of the base 10, thereby realizing five-axis linkage of the turntable 30.
Therefore, according to the five-axis structure 100 of the cam-type cradle, through the rotation of the cradle 20, the rotation of the rotating platform 30 and the three movement directions of the base 10, the movement of the rotating platform 30 in five directions can be realized, different processing requirements can be met, and the rotating speed and the load capacity of the rotating platform are improved.
According to an embodiment of the invention, the cam cradle five-axis structure 100 further comprises a brake assembly, and the brake assembly is arranged in the third mounting cavity and used for braking. The brake assembly may be used to control the rotation of the turntable 30.
Preferably, the tail seat 60 includes a bearing, that is, one end of the cradle 20 is driven by the second tower output shaft 41, the bearing is provided on the second tower output shaft 41, the tail seat 60 is provided at the other end of the cradle 20 corresponding to the second tower output shaft 41 to serve as a driven member, and the tail seat 60 not only plays a role of supporting the other end of the cradle 20, but also can reduce the rotation resistance of the cradle 20.
According to an embodiment of the present invention, the bassinet 20 is formed in an arc structure in which the middle portion is depressed downward, both ends of the bassinet 20 are tilted upward to be installed between the two installation portions, and at the same time, the depressed bottom surface of the bassinet 20 is formed in a plane to be installed with the turntable 30.
In one implementation of the present invention, the combination of the first cam input shaft 50 and the first tower output shaft 51 comprises: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes. Further, the second cam input shaft 40 and the second tower output shaft 41 in combination respectively include: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes.
Preferably, the cam curve has a 360 ° rotational constant velocity curve.
Specifically, the cam input shafts (the first cam input shaft 50 and the second cam input shaft 40) and the tower output shafts (the first tower output shaft 51 and the second tower output shaft 41) are arranged vertically, the cam input shafts are provided with constant-speed driving cam curved surfaces which rotate freely in 360 degrees, the tower output shafts are equally and separately provided with a plurality of needle roller bearings, and the cam curved surfaces and the needle roller bearings are in a gapless meshing state.
According to one embodiment of the invention, the first drive member 52 and the second drive member 42 are each formed as a servo motor.
In one embodiment of the present invention, the cradle 20 is provided with an annular groove at the bottom thereof, and the brake assembly includes a friction plate 71, a driving member 73, and a brake plate 72.
Specifically, the friction plate 71 is connected to the second tower output shaft 41, the driving member is provided in the annular groove, the brake pad 72 is formed as an annular member and connected to the bassinet 20, and the brake pad 72 is provided above the driving member 73 for engagement with the friction plate 71. Specifically, the driving member 73 brings the brake pad 72 into contact with the friction plate 71, thereby braking the turntable 30.
Preferably, the brake pads 72 are bolted to the bassinet 20 for easy installation and removal.
In summary, according to the five-axis cam-type cradle structure 100 of the embodiment of the invention, through the rotation of the cradle 20, the rotation of the rotating platform 30 and the three directions of movement of the base 10, the rotating platform 30 can move in five directions, different processing requirements can be met, and the rotating speed and the load capacity of the rotating platform are improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A five-axis structure of a cam-type cradle is characterized by comprising:
the base is provided with a first mounting part and a second mounting part at two ends respectively, a first mounting cavity is arranged in the first mounting part, a second mounting cavity is arranged in the second mounting part, and the base can move in three directions;
the two ends of the rotating shaft assembly are respectively connected with the first mounting part and the second mounting part;
a tilt shaft assembly disposed within the first mounting cavity;
the tail seat is arranged in the second mounting cavity;
wherein the rotating shaft assembly includes: the two ends of the cradle are movably connected with the first mounting part and the second mounting part respectively, and a third mounting cavity is arranged in the cradle; a turntable rotatably provided on the cradle; the first tower output shaft is arranged in the third mounting cavity and connected with the rotary table to drive the rotary table to rotate, and a plurality of needle roller bearings are arranged on the first tower output shaft; the first cam input shaft is pivotally arranged in the third mounting cavity and is perpendicular to the first tower output shaft, and a cam curved surface matched with the needle bearing is arranged on the first cam input shaft; the first driving piece is arranged in the third mounting cavity and is meshed with the first cam input shaft so as to drive the first cam input shaft to rotate;
the tilt shaft assembly includes: the second tower type output shaft is arranged in the first mounting cavity and connected with one end of the cradle to drive the cradle to move, and a plurality of needle roller bearings are arranged on the second tower type output shaft; the second cam input shaft is pivotally arranged in the first mounting cavity and is perpendicular to the second tower output shaft, and a cam curved surface matched with the needle roller bearing is arranged on the second cam input shaft; a second driver engaged with the second cam input shaft for driving the second cam input shaft to rotate.
2. The five-axis cam-type cradle structure according to claim 1, further comprising:
and the brake assembly is arranged in the third mounting cavity and used for braking.
3. The five-axis cam-type cradle structure according to claim 1, characterized in that the tailstock comprises a bearing.
4. The cam-type cradle five-axis structure according to claim 1, characterized in that the cradle is formed in an arc-shaped structure with a downward concave middle part.
5. The five-axis cam-type cradle structure according to claim 1, wherein the combination of the first cam input shaft and the first tower output shaft comprises: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes.
6. The five-axis cam-type cradle structure according to claim 1, wherein the second cam input shaft and the second tower-type output shaft in combination respectively comprise: the hollow input shaft and the hollow output shaft are combined, the core input shaft and the core output shaft are combined, the hollow input shaft and the flange output shaft are combined, and the double-core input shaft and the double-core output shaft are combined in various modes.
7. The five-axis structure of the cam-type cradle according to claim 1, wherein the cam curved surface has a 360 ° rotational constant velocity curved surface.
8. The five-axis cam-type cradle structure according to claim 1, wherein the first and second driving members are respectively formed as servo motors.
9. The five-axis structure of the cam-type cradle according to claim 2, wherein the cradle is provided with an annular groove at the bottom thereof, and the brake assembly comprises: the friction plate is connected with the second tower type output shaft;
the driving piece is arranged in the annular groove;
the brake block is formed into a ring-shaped piece and connected with the cradle, and the brake block is arranged above the driving piece and used for being matched with the friction plate.
10. The five-axis structure of the cam-type cradle according to claim 9, wherein the brake pad is bolted to the cradle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421380.5A CN111015253A (en) | 2019-12-31 | 2019-12-31 | Five-axis structure of cam-type cradle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421380.5A CN111015253A (en) | 2019-12-31 | 2019-12-31 | Five-axis structure of cam-type cradle |
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| CN111015253A true CN111015253A (en) | 2020-04-17 |
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| CN201911421380.5A Pending CN111015253A (en) | 2019-12-31 | 2019-12-31 | Five-axis structure of cam-type cradle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001029A (en) * | 2021-03-24 | 2021-06-22 | 镭泽精密制造(苏州)有限公司 | Laser equipment of multidimension degree stamp mark |
| CN113020805A (en) * | 2021-03-24 | 2021-06-25 | 镭泽精密制造(苏州)有限公司 | Laser engraving machine for three-dimensional application of curved surface |
| CN113146284A (en) * | 2021-03-29 | 2021-07-23 | 科益展智能装备有限公司 | Five-axis cradle rotary table |
| CN113588311A (en) * | 2021-07-30 | 2021-11-02 | 珠海格力智能装备有限公司 | Rotating structure, detection device and detection method |
| CN114055192A (en) * | 2021-11-17 | 2022-02-18 | 山东省机械设计研究院 | Turning and milling composite rotary table and high-grade numerical control machine tool |
| CN114227588A (en) * | 2022-01-11 | 2022-03-25 | 德普数控(深圳)有限公司 | Five-axis cradle turntable mounting jig and mounting method thereof |
| CN116038386A (en) * | 2023-04-03 | 2023-05-02 | 成都航空职业技术学院 | Clamp for machining blades by using cradle five-axis machining center |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113001029A (en) * | 2021-03-24 | 2021-06-22 | 镭泽精密制造(苏州)有限公司 | Laser equipment of multidimension degree stamp mark |
| CN113020805A (en) * | 2021-03-24 | 2021-06-25 | 镭泽精密制造(苏州)有限公司 | Laser engraving machine for three-dimensional application of curved surface |
| CN113146284A (en) * | 2021-03-29 | 2021-07-23 | 科益展智能装备有限公司 | Five-axis cradle rotary table |
| CN113588311A (en) * | 2021-07-30 | 2021-11-02 | 珠海格力智能装备有限公司 | Rotating structure, detection device and detection method |
| CN114055192A (en) * | 2021-11-17 | 2022-02-18 | 山东省机械设计研究院 | Turning and milling composite rotary table and high-grade numerical control machine tool |
| CN114227588A (en) * | 2022-01-11 | 2022-03-25 | 德普数控(深圳)有限公司 | Five-axis cradle turntable mounting jig and mounting method thereof |
| CN114227588B (en) * | 2022-01-11 | 2024-02-09 | 德普数控(深圳)有限公司 | Five-axis cradle turntable mounting jig and mounting method thereof |
| CN116038386A (en) * | 2023-04-03 | 2023-05-02 | 成都航空职业技术学院 | Clamp for machining blades by using cradle five-axis machining center |
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