Tool changing control method of automatic tool changing mechanism
阅读说明:本技术 自动换刀机构的换刀控制方法 (Tool changing control method of automatic tool changing mechanism ) 是由 张庆三 于 2018-07-06 设计创作,主要内容包括:一种自动换刀机构的换刀控制方法,以具备主轴、螺帽、换刀臂、第一马达及第二马达为前提,且螺帽与主轴为螺旋对配合,使得换刀臂在旋转扣刀、松刀下降、旋转换刀、上升夹刀及旋转归位的换刀程序当中,因部分的程序同步启动第一马达及第二马达而使得主轴能同时产生转动及轴向移动,因而可以缩短换刀的时间以提升换刀效率。(A tool changing control method of an automatic tool changing mechanism is based on the premise that a main shaft, a nut, a tool changing arm, a first motor and a second motor are provided, and the nut and the main shaft are in spiral pair matching, so that the tool changing arm can synchronously start the first motor and the second motor to enable the main shaft to simultaneously rotate and axially move in a tool changing procedure of rotary tool fastening, tool loosening and descending, rotary tool changing, tool clamping and rotary resetting, and tool changing time can be shortened to improve tool changing efficiency.)
1. A tool changing control method of an automatic tool changing mechanism is characterized in that the automatic tool changing mechanism comprises a main shaft, a nut, a tool changing arm, a first motor and a second motor, wherein the main shaft is provided with an outer spiral structure, the nut is provided with an inner spiral structure matched with the outer spiral structure, the tool changing arm is combined at one end of the main shaft, the first motor is used for driving the main shaft to rotate, and the second motor drives the nut to enable the main shaft to linearly displace between a first position and a second position; the control method comprises the following steps:
step A: the first motor and the second motor are synchronously operated, wherein the first motor drives the spindle to rotate, and the second motor drives the nut to maintain the spindle at the first position;
and B: the first motor stops operating, the second motor continuously drives the nut to make the main shaft move downwards;
and C: starting the first motor to drive the main shaft to rotate;
step D: the first motor stops operating, the second motor continuously drives the nut to make the main shaft move upwards;
step E: the first motor and the second motor are driven synchronously, wherein the first motor drives the spindle to rotate, and the second motor drives the nut to maintain the spindle at the first position.
2. The tool changing control method of claim 1, wherein the first motor in step a rotates the spindle in a first direction and the second motor rotates the nut in a second direction, wherein the first direction and the second direction are opposite.
3. The tool changing control method of claim 2, wherein the second motor of step B rotates the nut in a second rotational direction.
4. The tool changing control method of claim 3, wherein in step C, the first motor and the second motor are synchronously operated, and the second motor rotates the nut in a first direction to move the spindle down to the second position during the course of the spindle rotation, and then drives the nut to change the nut to rotate in a second direction to move the spindle up.
5. The tool changing control method of claim 4, wherein the second motor of step D rotates the nut in a first direction.
6. The tool change control method of claim 5, wherein the first motor of step E rotates the spindle in the second direction and the second motor rotates the nut in the first direction.
Technical Field
The invention relates to an automatic tool changing mechanism; in particular to a tool changing control method of an automatic tool changing mechanism.
Background
The automatic tool changing mechanism of the processing machine is arranged between the tool magazine and a main shaft head of the processing machine and roughly comprises a control system and a tool changing arm, wherein the control system is provided with a shaft which can be controlled to rotate or linearly displace, and the tail end of the shaft is fixedly connected with the tool changing arm.
The shaft of the known control system is controlled by two motors to rotate or linearly displace respectively, so as to drive the tool changing arm to exchange tools on the tool magazine and the spindle head, more specifically, one motor is dedicated to control the rotation of the shaft, and the other motor is used to control the shaft to move up and down, so that the tool changing arm sequentially comprises: and (3) tool changing procedures such as rotating and buckling the tool, loosening the tool and descending the tool, rotating and changing the tool, ascending the clamping tool, rotating and returning and the like.
However, in the above-mentioned conventional tool changing procedure, the two motors are controlled respectively and sequentially to complete the setting operation, i.e. the motor that moves backward must be started after the previous motor stops, so that the tool changing timing is delayed.
Disclosure of Invention
The invention aims to provide a tool changing control method of an automatic tool changing mechanism, which can shorten the tool changing operation time.
In order to achieve the above object, the present invention provides a tool changing control method for an automatic tool changing mechanism, the automatic tool changing mechanism comprises a main shaft, a nut, a tool changing arm, a first motor and a second motor, wherein the main shaft has an outer spiral structure, the nut has an inner spiral structure matched with the outer spiral structure, and the tool changing arm is coupled to one end of the main shaft. The first motor is used for driving the main shaft to rotate, and the second motor drives the nut to make the main shaft linearly displace between a first position and a second position; the control method comprises the following steps: the first motor and the second motor are synchronously operated, wherein the first motor drives the spindle to rotate, and the second motor drives the nut to maintain the spindle at the first position; controlling the first motor to stop operating, and continuously driving the nut by the second motor to enable the spindle to move downwards; starting a first motor to drive a main shaft to rotate; controlling the first motor to stop operating, and continuously driving the nut by the second motor to enable the spindle to move upwards; the first motor and the second motor are driven synchronously, wherein the first motor drives the spindle to rotate, and the second motor drives the nut to maintain the spindle at the first position.
The tool changing control method of the invention is characterized in that the first motor in the step A drives the spindle to rotate in a first direction, the second motor drives the nut to rotate in a second direction, and the first direction and the second direction are opposite.
The tool changing control method of the invention is characterized in that the second motor in the step B drives the screw cap to rotate in a second rotation direction.
In step C, the first motor and the second motor are synchronously operated, and during the stroke of the rotation of the spindle, the nut is rotated in the first direction to move the spindle down to the second position, and then the nut is driven to change the direction to move the spindle up.
The tool changing control method of the invention, wherein the second motor of step D drives the nut to rotate in a first direction.
In the tool changing control method of the invention, the first motor in step E drives the spindle to rotate in the second direction, and the second motor drives the nut to rotate in the first direction.
The invention has the beneficial effects that:
the control method of the invention enables the first motor and the second motor to synchronously operate in the time sequence of tool changing, thereby achieving the effect of shortening the tool changing time.
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 a perspective view of a portion of the components of FIG. 1;
FIG. 8 is an exploded view of the components of FIG. 7;
FIG. 9 is a partial cross-sectional view of the components of FIG. 7;
FIG. 10 is a flow chart of a tool changing control method of the automatic tool changing mechanism according to the preferred embodiment of the present invention;
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 numbers:
100 control system
10 machine base
12 upper cover
14 motor base
16 body
18 base
20 spindle
22 external spiral structure
24 straight groove
30 first transmission unit
31 first shaft sleeve
31a straight groove
32 first shaft base
32a perforation
33 holder
33a ball
33b oil seal
34 steel ball
35 first motor
35a first output shaft
36 first belt pulley
36a perforation
36' first belt pulley
37 first belt
38 bolt
39 bolt
40 second transmission unit
41 second shaft sleeve
41a internal spiral structure
42 second axle seat
43 holder
44 steel ball
45 second motor
45a second output shaft
46 second pulley
46a perforation
46' second pulley
47 second belt
48 bolt
49 bolt
200 tool changing arm
A. B cutter
S1-S5 first to fifth steps
Detailed Description
To more clearly illustrate the tool changing control method of the automatic tool changing mechanism of the present invention, a preferred embodiment will be described in detail below with reference to the drawings.
Referring to fig. 1 to 3, the automatic tool changer applied in the method of the preferred embodiment of the present invention includes a
In the present embodiment, the upper half surface of the
The
Referring to fig. 4 to 6, the
The
Referring to fig. 7 to 9, the
The
The automatic tool changer applied in the method of the preferred embodiment of the present invention is described below with reference to fig. 10, and the tool changing control method and the tool changing operation thereof are described as follows, and it is stated that the first turning direction is counterclockwise and the second turning direction is clockwise.
Fig. 1 shows the
When the
Fig. 13 discloses a third step S3 of controlling the
Fig. 14 discloses a fourth step S4 of controlling the
In the fifth step S5, after the clamping operation is completed, the
The above is the explanation of the tool changing control method and the tool changing operation of the present invention. As can be seen from the above, in the tool changing procedures of the
It should be noted that, the automatic tool changing mechanism for achieving the tool changing control method of the present invention is based on the premise that the automatic tool changing mechanism must include the
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.