TWI649153B - Tool changing method with tool preloosening mechanism - Google Patents

Abstract

The invention provides a method for performing a rapid tool change by using a pre-slipping knife for controlling the operation of a spindle, a loose cylinder and a tool change arm. One of the spindle clamping ends clamps the tool at a clamping position, and the method comprises the following steps : a pre-loosening step: before the tool is changed, the clamping end of the spindle is moved from the clamping position to a pre-song position to clamp the used tool, and the used tool is pushed by the loose cylinder to push the used tool out The taper of the spindle; a tool change step: the tool changer rotates and holds the used tool, and the used tool is pulled off the spindle, and then the tool to be used corresponds to the clamp end; and a tool insertion step: the tool change The arm inserts the tool to be used into the grip end and clamps it while the tool to be used is inserted. In this way, in order to reduce the time flow of the loose knife and the clamping knife, the effect of rapid tool change can be achieved.

Description

Method of performing quick tool change with pre-slipping knife

The present invention relates to a tool changing method, and more particularly to a method of performing a quick tool changing with a pre-slipping knife.

Please refer to FIG. 1 to FIG. 2, the process of changing the tool is as follows: (1) After the machining spindle is driven to complete the machining, the machining spindle drives the used tool 1 to return to the origin A to stop; after determining that the machining spindle is stopped The tool change arm 2 is further rotated from the standby position 2a to the spindle position 2b, and one end of the tool change arm 2 is fastened to the used tool 1, and the other end of the tool change arm 2 is mounted with the tool 3 to be used; when the tool change is confirmed After the arm 2 holds the used tool 1, the clamping end of the machining spindle then performs the loosening action B on the used tool 1, wherein the flow is represented by (1) in Fig. 1; (2) the tool change arm 2 Pulling the used tool 1 away from the machining spindle, and then, changing the tool arm 2, the tool 3 to be used corresponds to the clamping end of the machining spindle; the tool 3 to be used is inserted into the machining spindle by the tool change arm 2 Holding the end, wherein the flow is represented by (2) in FIG. 1; (3) the machining spindle confirms that the tool 3 to be used has been inserted into the clamping end, and then the cutter 3 to be used is subjected to the clamping action C, wherein , this process is indicated by (3) in Figure 1; (4) After confirming that the tool 3 to be used is clamped, the tool change arm 2 is further Axis position is rotated back to the standby position 2b 2a, to complete the tool change actuating a process, wherein in this process is shown in (d) in FIG. 1.

Further, in Fig. 2, the machining spindle position timing chart 4 (indicated by arrow 4), the tool change arm rotation timing chart 5 (indicated by arrow 5), and the tool change arm movement timing chart 6 (indicated by arrow 6). The power source for controlling the tool change arm 2 is a cam and a motor, and the cam is driven by the motor, and the tool change arm is actuated by the cam. When the machining spindle returns to the origin A after the machining is completed, the control tool change arm 2 is rotated from the standby position 2a to the spindle position 2b; the motor is required to be stopped within the stagnation angle of the cam rotation of 20 degrees, and waits for the power source. After the machining tool spindle B is completed, the tool changing arm 2 pulls the used tool 1 away; and when the tool changing arm 2 is rotated, and the tool 3 to be used is inserted into the machining spindle, the motor needs to brake to stop the cam. In another 20 degree stagnation angle, waiting for the knife action C to complete; then, the motor needs to drive the tool changer rotation again, returning the tool change arm to the standby position 2a, and stopping the cam brake at the origin A of 20 degrees. In the corner, follow-up process. Among them, in Figure 2, the machining spindle position timing diagram 4 is affected by the control tool changer power source cam.

However, in order to complete the tool change operation by rotating the cam 360 degrees, the cam needs to be consumed in the stagnation zone where the loose knife action B and the knife action C are invalid at 20 degrees, thereby prolonging the time of the tool change operation, and Knife action B and clamping action, the working curve design of the cam will be limited, resulting in increased noise and wear and shortened service life. In addition, the motor drives the tool change arm 2 for the control cam, and needs to cooperate with the origin A stop, the loose knife action B and the clamp action C. The motor needs to be controlled in three stages, so that the motor needs to be started and stopped three times in one tool change process. In this way, in addition to prolonging the time of tool change, it will also cause motor load and reduce the service life of the motor.

In order to solve the above problems, the present invention provides a method for performing a rapid tool change by using a pre-slipping knife, by controlling the clamping end of the spindle to clamp the tool in a pre-loose position before the tool-changing operation is completed, and then the loose-knife cylinder Push the tool so that the tool can be separated from the taper of the spindle, and the tool changer can be changed at one time. The rotation and movement of the knife operation reduces the waiting time for the loose knife action and the knife movement, thereby increasing the tool change process time and achieving the effect of rapid tool change.

An embodiment of the present invention provides a method for performing a rapid tool change by using a pre-slipping knife for controlling the operation of a spindle, a loose cylinder, and a tool change arm, wherein one of the spindles is driven by the first power source. Holding the tool at a clamping position, the first power source controls the spindle to drive the tool for machining; the second power source controls the loose cylinder to operate; the third power source controls the tool change arm to replace the tool, and the pre-release knife performs the rapid tool change The method comprises the following steps: a pre-spinning step: after the machining is completed, before the third power source controls the tool changer to change the tool, the clamping end of the first power source control spindle moves from the clamping position to a pre-tight position. The used tool; the second power source controls the loose cylinder to actuate, so that the loose cylinder pushes the used tool, so that the used tool is separated from the taper of the main shaft, and then the second power source drives the loose cylinder to retreat. Retracting distance, so that the used tool is re-contacted with the clamping end; a tool changing step: the third power source controls the tool changer to rotate and buckles the used tool, and pulls the used tool away from the spindle End, then by the third The force source controls the rotation of the tool change arm, and the tool to be used corresponds to the clamp end of the spindle; and a plugging step: the third power source controls the tool change arm to insert the tool to be used into the clamp end of the spindle, and is clamped by the spindle Holding the end of the insertion while holding the tool to be used.

According to the above, the present invention firstly holds the used tool from the pre-loose position before the tool change operation, and preliminarily loosens and keeps the used tool from being directly loosened. After the arm is actuated, the used tool can be pulled directly after the used tool is buckled, reducing the time required to wait for the loose knife action; and when the tool to be used is inserted into the loose knife cylinder, the loose knife cylinder The tool to be used is directly clamped, and there is no need to wait for the time of the conventional knife movement to increase the time of the tool change process and achieve the effect of rapid tool change.

Furthermore, the third power source of the present invention can control the movement of the tool change arm at one time, The improvement of the knowledge must be matched with the waiting pause and time consumption, thereby improving the stability of the tool change action and improving the service life of the third power source.

<知知>

1‧‧‧Used tools

2‧‧‧changing arm

2a‧‧‧ Standby position

2b‧‧‧ Spindle position

3‧‧‧Tools to be used

4‧‧‧Processing spindle position timing diagram

5‧‧‧Changer arm rotation timing diagram

6‧‧‧Changer arm movement timing diagram

A‧‧‧ origin

B‧‧‧ loose knife action

C‧‧‧Cutter action

<present invention>

10‧‧‧Low cutter cylinder position timing diagram

20‧‧‧Changer arm rotation timing diagram

30‧‧‧Changer arm movement timing chart

40‧‧‧Pre-pine position

50‧‧‧Retraction distance

T1‧‧‧ first time

T2‧‧‧ second time

T3‧‧‧ third time

T4‧‧‧ fourth time

T5‧‧‧ fifth time

S1‧‧‧Pre-cleaning step

S2‧‧‧ tool change procedure

S3‧‧‧ Inserting step

FIG. 1 is a schematic diagram of a conventional tool change operation process.

FIG. 2 is a schematic diagram of a conventional tool change timing.

Figure 3 is a schematic flow diagram of the present invention.

Fig. 4 is a schematic view showing the timing of the knife changing operation of the present invention.

Figure 5 is a schematic illustration of the comparison of the present invention with conventional timing.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above.

Referring to FIG. 3 to FIG. 5, the present invention provides a method for performing a rapid tool change by using a pre-slipping knife for an operation flow of a spindle, a loose cylinder and a tool change arm; The holding end holds the tool in a clamping position, wherein the inner edge of the clamping end of the main shaft has a taper. When the clamping position is in place, the tool and the main body of the clamping end are tightly matched, and the self-applying force of the taper causes the tool to be clamped. Tightly, the first power source controls the spindle to drive the tool to machine the workpiece. After the machining is completed, the tool is pushed by the second power source to make the tool taper from the spindle; then, the tool arm can be controlled by the third power source. Replacing the tool; wherein the first power source is a motor, the second power source is air pressure or oil pressure, and the third power source is The motor drives the cam, in the embodiment of the present invention, the second power source is the air pressure; in FIG. 3 to FIG. 5, the loose cylinder position timing diagram 10 (indicated by the arrow 10), the tool changer rotation timing diagram 20 (with the arrow) 20 indicates), the change arm movement timing diagram 30 (indicated by arrow 30).

The method for performing rapid tool change by using a pre-slipping knife comprises the following steps: a pre-slipping step S1: after the machining is completed, before the third power source controls the tool changer to change the tool, the first power source control spindle moves from the machining position to During the tool change position, the clamping end of the spindle is moved from the clamping position to a pre-song position 40 to clamp the used tool; then, the second power source controls the cutter shaft of the loose cylinder to push the used tool , the used tool is separated from the taper of the spindle to cancel the taper self-stress; then, the second power source controls the loose cylinder to retract a retracting distance 50, so that the used tool is re-contacted with the clamping end of the main shaft, wherein The retraction distance is 50 relative to the axial distance along the main axis.

In FIGS. 3 to 5, the position of the pre-loose position 40 on the release cylinder timing diagram is indicated by arrow 40, and the position of the retraction distance 50 on the release cylinder timing diagram is indicated by arrow 50; in the embodiment of the invention The machining position is the position where the spindle drives the tool to machine the workpiece; the tool change position is the position where the spindle drives the tool back to the origin to wait for the tool changer to change the tool.

Furthermore, the clamping tightness of the clamping position is greater than the clamping tightness of the pre-loosening position, further indicating that the clamping position is that the clamping end of the main shaft is fully tightened to clamp the tool; the pre-loose position is pre-slightly Loosen and keep the tool from being loosened directly; that is, the clamping end of the spindle has a taper. When clamping, the taper of the clamping end of the spindle increases the clamping force of the tool; In the position, the tool is pushed through the loose cylinder, and the tool does not loosen directly and makes the taper of the clamping end of the spindle disengage from the taper; the loose cylinder retracts to the retracting distance 50, and the spindle clamping end makes The used tool is re-contacted with the clamping end of the spindle to keep the machined tool firmly bonded to the clamping end of the spindle to withstand the impact of the moment of tooling.

In addition, in the pre-loosening step, the tool magazine for installing the plurality of tools for machining has completed the preparation operation, and the tool change arm has a first end and a second end, wherein the first end of the tool change arm is used for clamping Holding the tool to be used in the magazine, the second end of the tool change arm is used to hold the used tool. Further, when the first power source controls the spindle to move from the machining position to the tool change position, the first power source simultaneously controls the clamping end of the spindle to move from the clamp position to the pre-loose position to clamp the used tool, and During the operation of the first power source, the tool magazine is also simultaneously opened to complete the preparation action.

a tool changing step S2: after the pre-slipping step S1, the third power source controls the tool change arm to rotate from the original position, and the second end of the tool change arm buckles the used tool, and the first end of the tool change arm Hold the tool to be used; when the second end of the tool change arm pulls the used tool away from the clamping end of the spindle, the first end of the tool change arm pulls the tool to be used away from the tool magazine; The three power source controls the rotation of the tool change arm, so that the tool to be used at the first end of the tool change arm corresponds to the clamp end of the spindle.

In FIG. 3 to FIG. 5, the tool change arm rotates and holds the used tool, and is represented by the first time T1 on the tool change arm rotation timing chart 20 and the change arm movement timing chart 30; The clamping end of the spindle is represented by the second time T2 on the tool change arm rotation timing diagram 20 and the tool change arm movement timing diagram 30; the tool change arm rotation causes the tool to be used to correspond to the spindle clamp end, and the tool change The arm rotation timing chart 20 and the tool change arm movement timing chart 30 are represented by a third time T3.

In the embodiment of the present invention, the tool change arm has a rotating shaft, and the third power source controls the tool change arm rotation with the rotating shaft as the center of rotation; and the third power source can control the axial reciprocating motion of the tool change arm along the rotating shaft. Therefore, when the tool change arm needs to pull the used tool away from the clamping end of the main shaft, the third power source controls the tool change arm to move away from the clamping end along the axial direction of the rotating shaft, so that Use the tool to pull it off the clamp end.

a plugging step S3: the third power source controls the tool change arm to be axially oriented along the axis of rotation In the direction of the end, the tool to be used is inserted into the clamping end of the main shaft, and the clamping end of the main shaft is inserted while clamping the tool to be used; then, the third power source controls the changing arm to rotate back to the original position; When the tool is inserted into the clamping end of the spindle, the tool to be used can be automatically clamped through the structure of the clamping end, or the tool to be used can be clamped by the clamping end of the spindle controlled by the first power source. In FIG. 3 to FIG. 5, the tool change arm inserts the tool to be used into the clamping end, and is represented by the fourth time T4 on the tool change arm rotation timing chart 20 and the tool change arm movement timing chart 30; the tool change arm is rotated back. The original position is indicated by the fifth time T5 on the tool change arm rotation timing chart 20 and the tool change arm movement timing chart 30.

Furthermore, as shown in FIG. 3 to FIG. 5, the process of controlling the operation of the tool change arm by the third power source from the tool change step S2 to the tool insertion step S3 is continuous without interruption. Further, the used tool is slightly loosened in advance by the pre-slipping step S1, and the third power source starts from the tool changing step S2, so that the used tool can be pulled away from the clamping end without waiting, and the tool is pulled out continuously. Insert the tool you want to use into the grip end.

Therefore, the present invention clamps the used tool from the pre-loose position before the tool change operation is completed, and the tool is slightly loosened in advance and keeps the used tool from being loosened directly, when the tool change arm is actuated After that, the used tool can be pulled directly after the used tool is buckled, and when the tool to be used is inserted into the clamping end, the clamping end directly clamps the tool to be used, thereby The process of loosening the knife and the knife is shortened, the time of the tool change process is increased, and the effect of rapid tool change is achieved.

Furthermore, the third power source of the present invention can control the movement of the tool change arm at one time, thereby improving the stability of the tool change process and thereby increasing the service life of the third power source.

In addition, as can be clearly seen from FIG. 5, the slope of the position of the loose-cylinder position timing diagram 10, the change-over arm rotation timing diagram 20, and the change-arm movement timing diagram 30 of the present invention is compared with the conventional machining spindle position timing diagram 4 , the change arm rotation timing diagram 5 and the change arm movement timing diagram 6 curve slope is small, therefore, change In the knife flow, it is more stable and faster, and it can effectively reduce the noise and loss problems in the tool change process, thereby improving the tool change efficiency.

The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. Any modifications or variations that are made without departing from the spirit of the invention are intended to be protected.

Claims (8)

A method for performing a rapid tool change by using a pre-slipping knife for controlling the actuation of a spindle, a loose cylinder and a tool change arm, wherein the first power source drives one of the clamping ends of the spindle to clamp the tool at a clamping position, The first power source controls the spindle to drive the tool for machining; the second power source controls the loose cylinder to operate; the third power source controls the tool change arm to replace the tool, and the method for performing the rapid tool change by the pre-slipping knife comprises the following steps: Pre-loosening step: after the machining is completed, before the third power source controls the tool changer to change the tool, the clamping end of the first power source control spindle is moved from the clamping position to a pre-song position to clamp the used tool; The second power source controls the loose cylinder to actuate, so that the loose cylinder pushes the used tool, so that the used tool spindle is unscrewing, and then the second power source drives the loose cylinder to retract and retract the distance. The used tool is re-contacted with the clamping end; a tool changing step: the third power source controls the tool changer to rotate and buckles the used tool, and pulls the used tool away from the clamping end of the spindle, and then Controlled by a third power source The tool arm rotates, and the tool to be used corresponds to the clamping end of the spindle; and a tool insertion step: the third power source controls the tool change arm to insert the tool to be used into the clamping end of the spindle, and the clamping end of the spindle is inserted Hold the tool you want to use at the same time. The method of claim 1, wherein the clamping position is greater than the clamping tension of the pre-loosening position. The method of performing a rapid tool change by a pre-slipping knife as described in claim 1, wherein in the pre-loosing step, the tool magazine for mounting the tool has completed the preparation operation. A method of performing a rapid tool change by a pre-slipping knife as described in claim 3, wherein at the tool changing step, one end of the tool change arm holds the tool to be used. A method of performing a rapid tool change by a pre-slipping knife as described in claim 1, wherein in the inserting step, the tool to be used is clamped by the grip end of the first power source control spindle. The method of claim 1, wherein the third power source controls the tool changer to be continuously uninterrupted by the tool change step to the tool insertion step. The method of performing a rapid tool change by a pre-slipping knife according to claim 1 or 3, wherein, in the pre-loosening step, the first power source controls the spindle to move from the machining position to the tool change position, the first power The source simultaneously controls the grip end of the spindle to be moved from the clamped position to the pre-popped position to clamp the used tool. A method of performing a rapid tool change with a pre-slipping knife as described in claim 1, wherein the retracting distance is an axial distance relative to the main axis.