Rotation and linear displacement control system of shaft and automatic tool changing mechanism with shaft
阅读说明:本技术 轴的转动及直线位移控制系统及具有该轴的自动换刀机构 (Rotation and linear displacement control system of shaft and automatic tool changing mechanism with shaft ) 是由 张庆三 于 2018-07-06 设计创作,主要内容包括:本发明公开一种轴的转动及直线位移控制系统及具有该轴的自动换刀机构,其中控制系统包括主轴、第一传动单元及第二传动单元。主轴同时穿过第一传动单元的第一轴套与第二传动单元的第二轴套,其中主轴与第一轴套以滑动对配合而与第二轴套以螺旋对配合,通过有效控制驱使第一轴套及/或第二轴套转动,即能操控主轴转动及/或轴向移动。自动换刀机构进一步包括换刀臂组装于主轴一端,换刀臂随着主轴的转动及/或轴向移动而完成换刀动作。(The invention discloses a rotation and linear displacement control system of a shaft and an automatic tool changing mechanism with the shaft, wherein the control system comprises a main shaft, a first transmission unit and a second transmission unit. The main shaft simultaneously passes through the first shaft sleeve of the first transmission unit and the second shaft sleeve of the second transmission unit, wherein the main shaft is in sliding pair fit with the first shaft sleeve and in spiral pair fit with the second shaft sleeve, and the rotation and/or axial movement of the main shaft can be controlled by effectively controlling and driving the first shaft sleeve and/or the second shaft sleeve to rotate. The automatic tool changing mechanism further comprises a tool changing arm assembled at one end of the main shaft, and the tool changing arm completes tool changing action along with the rotation and/or axial movement of the main shaft.)
1. The utility model provides a rotation of axle and linear displacement control system which characterized in that contains:
a frame;
a main shaft, which is rotatably arranged on the base and can reciprocate along the axial direction;
the first transmission unit comprises a first shaft sleeve and a first power source, wherein the main shaft penetrates through the first shaft sleeve, the main shaft and the first shaft sleeve are matched in a sliding manner, the first power source drives the first shaft sleeve to rotate, and the rotating first shaft sleeve drives the main shaft to rotate; and
and the second transmission unit comprises a second shaft sleeve and a second power source, wherein the main shaft penetrates through the second shaft sleeve, the main shaft and the second shaft sleeve are matched in a spiral opposite mode, and the second power source drives the second shaft sleeve to rotate so that the main shaft moves in the axial direction relative to the second shaft sleeve.
2. The system as claimed in claim 1, wherein the second transmission unit comprises a second shaft seat fixed in the base, the second sleeve is disposed in the second shaft seat, the second sleeve has an inner spiral structure, and the main shaft has an outer spiral structure matching with the inner spiral structure.
3. The system as claimed in claim 2, wherein at least one retainer is disposed between the second shaft seat and the second shaft sleeve to keep the second shaft sleeve rotatably disposed in the second shaft seat.
4. The system for controlling rotational and linear displacement of a shaft according to claim 2, wherein the inner helical structure and the outer helical structure are helical grooves formed along the axial direction, and the second transmission unit includes a plurality of steel balls disposed in the helical grooves of the inner helical structure and the outer helical structure.
5. The system for controlling the rotational and linear displacement of a shaft according to any one of claims 2 to 4, wherein the second transmission unit comprises two second pulleys, the second power source having a second rotatable output shaft; one of the second belt pulleys is fixedly connected to one end of the second output shaft, the other second belt pulley and the second shaft sleeve are coaxially arranged and fixedly connected to the second shaft sleeve, and a second belt is wound between the two second belt pulleys.
6. The system according to any one of claims 1 to 4, wherein the first transmission unit comprises a first shaft seat fixed in the machine seat, the first shaft seat being disposed in the first shaft seat; the inner wall of the first shaft sleeve and the surface of the main shaft are respectively provided with at least one straight groove which is concavely arranged along the axial direction, and a plurality of steel balls are filled between the first shaft sleeve and the straight groove of the main shaft.
7. The system of claim 6, wherein at least one retainer is disposed between the first shaft seat and the first sleeve to retain the first sleeve rotatably in the first shaft seat.
8. The system of claim 6, wherein the first transmission unit includes two first pulleys, the first power source having a first rotatable output shaft; one of the first belt pulleys is fixedly connected to one end of the first output shaft, the other one of the first belt pulleys is coaxially arranged with the first shaft sleeve and fixedly connected to the first shaft sleeve, and a first belt is wound between the two first belt pulleys.
9. The system according to any one of claims 1 to 4, wherein the first transmission unit comprises a first shaft seat fixed in the machine seat, the first shaft seat is disposed in the first shaft seat and driven by the first power source to rotate in situ; one of the inner wall of the first shaft sleeve and the surface of the main shaft is provided with at least one straight groove which is recessed along the axial direction, and the other one is provided with a convex rib which is matched with the straight groove.
10. The system of claim 1, wherein at least one of the first and second power sources is a motor.
11. An automatic tool changing mechanism, comprising:
a control system for a shaft, comprising:
a frame;
a main shaft, which is rotatably arranged on the base and can reciprocate along the axial direction;
the first transmission unit comprises a first shaft sleeve, the main shaft penetrates through the first shaft sleeve and is matched with the first shaft sleeve in a sliding manner, and the first shaft sleeve is driven to rotate and drives the main shaft to rotate;
the second transmission unit comprises a second shaft sleeve, the main shaft penetrates through the second shaft sleeve and is matched with the second shaft sleeve in a spiral opposite mode, and the second shaft sleeve is driven to rotate so as to drive the main shaft to move along the axial direction; and
a tool changing arm combined with one end of the main shaft penetrating out of the machine base.
12. The automatic tool changer of claim 11, wherein the first transmission unit comprises a first shaft seat fixed in the machine base, the first shaft sleeve being rotatably disposed in the first shaft seat in situ; the inner wall of the first shaft sleeve and the surface of the main shaft are respectively provided with at least one straight groove which is concavely arranged along the axial direction, and a plurality of steel balls are filled between the first shaft sleeve and the straight groove of the main shaft.
13. The automatic tool changer of claim 12, wherein the first transmission unit comprises a first motor having a rotatable first output shaft and two first pulleys; one of the first belt pulleys is fixedly connected to one end of the first output shaft, the other one of the first belt pulleys is coaxially arranged with the first shaft sleeve and fixedly connected to the first shaft sleeve, and a first belt is wound between the two first belt pulleys.
14. The automatic tool changer of claim 11, wherein the second transmission unit comprises a second shaft base fixed in the base, the second shaft sleeve is rotatably disposed in the second shaft base, the second shaft sleeve has an inner spiral structure, the spindle has an outer spiral structure engaged with the inner spiral structure, and a plurality of steel balls are disposed between the inner spiral structure and the outer spiral structure.
15. The automatic tool changer of claim 14, wherein the second transmission unit comprises a second motor and second pulleys, the second motor having a rotatable second output shaft; one of the second belt pulleys is fixedly connected to one end of the second output shaft, the other second belt pulley and the second shaft sleeve are coaxially arranged and fixedly connected to the second shaft sleeve, and a second belt is wound between the two second belt pulleys.
Technical Field
The present invention relates to the use of shafts; in particular to a rotation and linear displacement control system of a shaft and an automatic tool changing mechanism with the shaft.
Background
The known shaft is widely used and can be controlled in a rotary or linear displacement manner. Taking an automatic tool changing mechanism of a processing machine as an example, the automatic tool changing mechanism is arranged between a tool magazine and a spindle head of the processing machine and comprises a spindle and a tool changing arm combined at one end of the spindle, wherein the spindle is controlled by two motors to rotate or linearly displace, so that the tool changing arm is driven to exchange tools on the tool magazine and the spindle head. For example, taiwan publication No. I310717, "tool changer" discloses that two motors are used to drive the main shaft to rotate or linearly displace, but the technology occupies a large space due to a large structure, and the transmission members are too heavy to be maintained, which further causes a problem of shear failure due to an excessive hidden load between some connecting members.
The inventor of the present invention discloses a taiwan patent of taiwan publication No. I375604 "a rotation and linear displacement control system of a shaft and an automatic tool changing mechanism of a processing machine having the same" to improve the above disadvantages, but the inventor of the present invention considers that the tool changing timing can be further enhanced to shorten the tool changing time and the structural space can be further improved to reduce the volume in view of the refinement.
Disclosure of Invention
In view of the above, the present invention is directed to a system for controlling rotation and linear displacement of a shaft and an automatic tool changing mechanism having the same, which can shorten a tool changing time and improve a structural volume.
In order to achieve the above object, the present invention provides a system for controlling the rotational and linear displacement of a shaft, which comprises a base, a main shaft, a first transmission unit and a second transmission unit. Wherein the main shaft is rotatably arranged on the base and can reciprocate along the axial direction; the first transmission unit comprises a first shaft sleeve and a first power source, the main shaft penetrates through the first shaft sleeve and is matched with the first shaft sleeve in a sliding manner, and the first power source drives the first shaft sleeve to drive the main shaft to rotate; the second transmission unit comprises a second shaft sleeve and a second power source, the main shaft penetrates through the second shaft sleeve and is matched with the second shaft sleeve in a spiral pair mode, and the second power source drives the second shaft sleeve to rotate so that the main shaft moves in the axial direction relative to the second shaft sleeve.
The invention also provides an automatic tool changing mechanism which comprises the rotation and linear displacement control system of the shaft, and a tool changing arm is combined at one end of the main shaft, which penetrates out of the machine base.
The structure of the invention enables the first motor and the second motor to synchronously operate in time sequence of tool changing to achieve the purpose of shortening the tool changing time, and the main shaft and the first shaft sleeve are matched in a sliding pair way, and the main shaft and the second shaft sleeve are matched in a spiral pair way, so that the effect of reducing the volume of the structure can be achieved.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a perspective view of an automatic tool changer according to a preferred embodiment of the present invention;
FIG. 2 is a perspective view of a base and a spindle in the control system according to the preferred embodiment of the present invention;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a perspective view of a portion of the components of FIG. 1;
FIG. 5 is an exploded view of the components of FIG. 4;
FIG. 6 is a cross-sectional view of a portion of the components of FIG. 4;
FIG. 7 is another embodiment of a portion of the components of the control system of the present invention;
FIG. 8 is a perspective view of a portion of the components of FIG. 1;
FIG. 9 is an exploded view of the components of FIG. 8;
FIG. 10 is a cross-sectional view of a portion of the components of FIG. 8;
fig. 11 to 15 are schematic diagrams illustrating a tool changing operation of the automatic tool changer according to the preferred embodiment of the invention.
Wherein the reference numerals
100 control system
10 machine base
12
18 base
20 spindle
22 external
30 first transmission unit
31
32a bore 33 retainer 33a ball
35
36a perforated 36'
38
31B ribs
40 second transmission unit
41
42 second bearing 43
45
46a
48
200 tool changing arm
A. B cutter
Detailed Description
The following detailed description of the embodiments of the present invention with reference to the drawings and specific examples is provided for further understanding the objects, aspects and effects of the present invention, but not for limiting the scope of the appended claims.
To more clearly illustrate the present invention, a preferred embodiment is described in detail below with reference to the accompanying drawings. As will be described in the foregoing, the present invention provides a control system for controlling the rotational and linear displacement of a shaft, which is applied to a center-cutting machine, but not limited thereto, wherein the control system forms a part of an automatic tool changer of the machine, and the automatic tool changer further includes a tool changer arm.
Referring to fig. 1 to 3, a
The
The
Referring to fig. 4 to 6, the
The
Referring to fig. 8 to 10, the
The
The above is a description of the structure of the
Fig. 1 shows the
As shown in fig. 12, when the
Fig. 13 shows the operation of the
Fig. 14 illustrates the raising and clamping operation of the
After the tool clamping operation is completed, the
In the above tool changing procedure, the operations of rotating and fastening the tool, loosening and descending the tool, rotating and changing the tool, lifting and clamping the tool, and rotating and returning are completed in a very short time, and the invention further shortens the tool changing time and improves the efficiency by synchronously starting the
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
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