TWI410296B - Tool changer and tool change methed - Google Patents

Abstract

A tool changer includes a spindle having a collet, an auxiliary tool-arm having a collet, a tool-pan having a plurality of tool-seats, and an auxiliary tool-magazine. The auxiliary tool-magazine includes a main body, a turnplate capable of rotating relative to the main body, a first tool-carrier, and a second tool-carrier. The first tool-carrier and the second tool-carrier are fixed to the turnplate.

Description

Tool changer and tool change method

The invention relates to a tool changing device and a tool changing method, in particular to a tool changing device and a tool changing method for a circuit board drilling machine.

As shown in FIG. 10, in the circuit board drilling machine, the spindle 1 holds a tool 2 and performs drilling using the tool 2. The tool 2 on the spindle 1 needs to be replaced frequently with the plurality of tools 4 placed on the cutter head 3 during the machining process. Since the spacing between the tools 4 on the cutter head 3 is small, it is not possible to directly use the chuck 5 of the spindle 1 to pick up and place the tool 4. Therefore, the tool 4 is usually taken out from the cutter head 3 by an auxiliary cutter arm 6, and placed in the temporary storage magazine 7 having a large space to temporarily store the cutter 2 and the slave cutter 3 which are replaced from the spindle 1. The selected tool 4, the specific tool change process usually includes the following steps:

a. The auxiliary knife arm 6 moves above the cutter head 3;

b. The auxiliary cutter arm 6 is lowered and the new cutter 4 is clamped, and a vacancy occurs on the cutter head 3;

c. the auxiliary knife arm 6 is raised;

d. The auxiliary knife arm 6 moves to the top of the first carrier 8 of the temporary magazine 7;

e. The auxiliary tool arm 6 is lowered and the new tool 4 is placed in the first carrier 8;

f.. the auxiliary knife arm 6 is raised;

g. The spindle 1 moves to the top of the second carrier 9 of the temporary magazine 7;

h. The main shaft 1 is lowered and the old cutter 2 is placed in the second carrier 9;

i. the spindle 1 rises;

j. The auxiliary knife arm 6 moves above the second carrier 9, and the spindle 1 moves above the first carrier 8;

k. The auxiliary tool arm 6 is lowered and the old tool 2 is clamped, the main shaft 1 is lowered and the new tool 4 is clamped;

l. The main shaft 1 and the auxiliary arm 6 rise, the main shaft 1 starts to rotate, and the new tool 4 is ready to work;

m. the auxiliary knife arm 6 moves above the vacancy of the cutter head 3;

n. The auxiliary knife arm 6 is lowered and the old tool 2 is placed in the empty position.

It can be seen that the above-mentioned tool change process is complicated, which affects the efficiency of the tool change, and thus greatly affects the processing efficiency of the circuit board.

In view of the above, it is necessary to provide a more efficient tool changer and a tool change method.

A tool changing device comprises a spindle provided with a chuck, an auxiliary cutter arm provided with a chuck, a cutter disc having a plurality of cutter positions and a temporary cutter magazine, wherein the temporary cutter magazine comprises a body and a The first carrier and a second carrier further comprise a turntable rotatable relative to the body, the first carrier and the second carrier being disposed on the turntable.

A tool changing method for changing a tool by using the above-mentioned tool changing device, comprising the steps of: clamping a chuck of the spindle to a first tool in advance; and placing a plurality of second tools into a plurality of tool positions of the cutter head; The auxiliary cutter arm moves to the upper side of the cutter head; the chuck of the auxiliary cutter arm descends and picks up a second cutter, and the clamped second cutter originally forms a vacancy; the auxiliary cutter arm rises; the main shaft and The auxiliary cutter arms are respectively moved to the first carrier and the second carrier of the rotary table of the temporary magazine; the spindle is lowered and the first cutter clamped to the chuck is placed in the first carrier, the auxiliary knife Lowering the arm and placing the second cutter clamped on the collet into the second carrier; the main shaft and the auxiliary arm are raised, the turntable rotating to transposition the first carrier and the second carrier; the spindle descending And clamping, by the collet, the second cutter located in the second carrier, the auxiliary cutter arm descending and clamping the first cutter located in the first carrier by the collet; the auxiliary cutter arm moves to the Above the tool bit forming a vacancy; the auxiliary arm Drop clip thereon and the collet tool into the first slot of the cutter head is formed in the tool bit.

When the tool changing device of the invention is used for tool changing, the utility model can save multiple steps than the traditional tool changing process, and greatly improves the tool changing efficiency.

Referring to FIG. 1, the tool changing apparatus of the present invention includes a spindle 10, an auxiliary cutter arm 30, a cutter head 50, and a temporary magazine 70.

The spindle 10 is provided with a collet 11 for holding a cutter. In operation, a first cutter 13 is interposed on the collet 11.

The auxiliary cutter arm 30 is provided with a collet 31 for gripping the cutter. In general, the auxiliary knife arm 30 can be designed to move synchronously or non-synchronously with the spindle 10. The auxiliary cutter arm 30 can be fixed to the main shaft 10 when designed for synchronous motion. When the non-synchronous motion is designed, the auxiliary arm 30 and the main shaft 10 can be slidably mounted on the same beam (not shown); at the same time, the auxiliary arm 30 and the main shaft 10 can be respectively transmitted through a longitudinally disposed telescopic piece. (not shown) is mounted on the beam such that the auxiliary arm 30 and the main shaft 10 are movable up and down respectively for the beam. In order to facilitate the introduction of the present invention, in the present embodiment, a mode in which the auxiliary blade arm 30 moves in synchronization with the spindle 10 is employed.

The cutter head 50 is provided with a plurality of cutter positions 51 for respectively placing the plurality of second cutters 53.

The temporary magazine 70 includes a body 71 and a turntable 73 rotatable relative to the body 71. A first carrier 731 and a second carrier 732 are disposed on the turntable 73. In the present embodiment, the first carrier 731 and the second carrier 732 are symmetrical about the center of the turntable 73.

Referring to FIG. 8 , in the embodiment, the main body 71 of the temporary storage 70 includes a housing 711 , a first rotating shaft 713 vertically mounted on the housing 711 , and a horizontally mounted housing The second shaft 715 of 711. The two ends of the first rotating shaft 713 are respectively mounted on the top plate and the bottom plate of the housing 711, and the two ends of the first rotating shaft 713 are matched with the bottom plate and the bottom plate of the housing 711 by bearings 75, so that the first rotating shaft 713 can be opposite. Rotating in the housing 711. The top end of the first rotating shaft 713 is exposed by the top plate of the housing 711 and is fixed to the center of the bottom surface of the turntable 73. A first helical gear 78 is disposed in the middle of the first rotating shaft 713. The middle portion of the second rotating shaft 715 is mounted on one side plate of the housing 711, and the two ends of the second rotating shaft 715 are respectively located inside and outside the housing 711. The second rotating shaft 715 is engaged with the side plate by a bearing 76 such that the second rotating shaft 715 is rotatable relative to the housing 711. A second helical gear 79 is disposed at one end of the second rotating shaft 715 located in the housing 711. The second bevel gear 79 meshes with the first bevel gear 78.

In use, a torque is applied to one end of the second shaft 715 that is outside the housing 711 such that the second shaft 715 rotates. The second rotating shaft 715 transmits the torque to the first helical gear 78 through the second helical gear 79, so that the first rotating shaft 713 drives the turntable 73 to rotate. In addition, a plurality of balls 77 may be added between the turntable 73 and the top plate of the housing 711 to make the rotation of the turntable 73 smoother and smoother.

In other embodiments, the temporary magazine 70 can omit the second shaft 715 and the two helical gears 78, 79, and directly apply the torque to the first shaft 713 to drive the turntable 73 to rotate. For example, a servo motor can be mounted in the housing 711, and the first rotating shaft 713 can be rotated by the servo motor.

As shown in Fig. 9, in actual production, multiple drilling machines are generally used simultaneously for multi-spindle machining, and at the same time, there are multiple cutterheads. Therefore, a plurality of the temporary storage magazines 70 can be connected in series, and the chain or pulley 80 is matched with the second rotating shaft 715 of the temporary storage 70, and the servo motor 90 drives the temporary storage 70. The turntable 73 rotates.

The tool changing method of the tool changing device of the present invention comprises the following steps:

A. Please refer to FIG. 1 and FIG. 2, the auxiliary arm 30 moves to the top of the cutter head 50;

B. The chuck 31 of the auxiliary cutter arm 30 is lowered and a second cutter 53 is clamped, and the cutter position 51 where the second cutter 53 is originally formed forms a vacancy;

C. The auxiliary knife arm 30 is raised;

D. Please continue to refer to FIG. 3, the main shaft 10 and the auxiliary tool arm 30 are respectively moved to the top of the first carrier 731 and the second carrier 732 of the turntable 73 of the temporary tool magazine 70;

E. With continued reference to FIG. 4, the main shaft 10 is lowered and the first cutter 13 clamped on the collet 11 is placed in the first carrier 731, and the auxiliary cutter arm 30 is lowered and the second cutter clamped on the collet 31 is clamped. 53 is placed in the second carrier 732;

F. Please continue to refer to FIG. 5, the main shaft 10 and the auxiliary cutter arm 30 are raised, and the turntable 73 is rotated to shift the first carrier 731 and the second carrier 732, so that the first cutter 13 and the corresponding second cutter 53 are indexed;

G. With continued reference to FIG. 6, the main shaft 10 is lowered and the second cutter 53 located in the second carrier 732 is clamped by the collet 11 thereof. The auxiliary cutter arm 30 is lowered and clamped by the collet 31 in the first carrier 731. The first tool 11, the spindle 1 starts to rotate, and the second cutter 53 is ready to work;

H. Please continue to refer to FIG. 7, the auxiliary tool arm 30 moves to the upper position of the tool bit 51 forming the vacancy of the cutter head 50;

I. The auxiliary knife arm 30 is lowered and the first cutter 13 clamped to its collet 31 is placed in the knives 51 forming the vacancies of the cutter head 50.

It can be seen from the flow of the above-mentioned tool change that the use of the tool changing device of the present invention for temporarily changing the tool is used to temporarily store the presence of the turntable 73 on the tool magazine 70, so that each time the tool change can save five steps compared with the conventional tool change process, Improved tool change efficiency.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10. . . Spindle

11. . . Chuck

13. . . First tool

30. . . Auxiliary arm

31. . . Chuck

50. . . Cutter

51. . . Cutter Location

53. . . Second cutter

70. . . Temporary tool magazine

71. . . Ontology

711. . . case

713. . . First shaft

715. . . Second shaft

73. . . Turntable

731. . . First carrier

732. . . Second carrier

75, 76. . . Bearing

77. . . Ball

78. . . First helical gear

79. . . Second helical gear

80. . . Chain or pulley

90. . . Servo motor

1 to 7 are schematic views showing the operation of a preferred embodiment of the tool changing device of the present invention.

Figure 8 is a partial cross-sectional view of the temporary magazine in Figure 5.

FIG. 9 is a schematic diagram of the simultaneous use of a plurality of temporary magazines in FIG. 5.

Figure 10 is a schematic illustration of a conventional tool changer.

10. . . Spindle

11. . . Chuck

13. . . First tool

30. . . Auxiliary arm

31. . . Chuck

50. . . Cutter

51. . . Cutter Location

53. . . Second cutter

70. . . Temporary tool magazine

71. . . Ontology

73. . . Turntable

731. . . First carrier

732. . . Second carrier

Claims (7)

A tool changing device comprises a spindle provided with a chuck, an auxiliary cutter arm provided with a chuck, a cutter disc having a plurality of cutter positions and a temporary cutter magazine, wherein the temporary cutter magazine comprises a body and a The first carrier and the second carrier are improved in that the temporary magazine further includes a turntable rotatable relative to the body, and the first carrier and the second carrier are disposed on the turntable. The tool changing device of claim 1, wherein the body of the temporary storage magazine comprises a casing and a first rotating shaft rotatably mounted in the casing, the casing comprising a top plate, the casing One end of the first rotating shaft is exposed by the top plate and fixed to the turntable, so that the first rotating shaft drives the turntable to rotate. The tool changing device of claim 2, wherein the turntable and the top plate of the casing are provided with a plurality of balls for assisting the rotation of the turntable. The tool changing device of claim 2, wherein the body of the temporary magazine further comprises a second rotating shaft rotatably mounted to the housing perpendicular to the first rotating shaft, the first rotating shaft a first helical gear is disposed, the second rotating shaft is located at an inner side of the casing, and the other end is located outside the casing, and the second rotating shaft is located at an inner side of the casing and is provided with a first meshing gear. Two helical gears. The tool changing device of claim 4, wherein the first rotating shaft and the second rotating shaft are rotatably mounted to the housing through bearings. A tool changing device combination, comprising a plurality of tool changing devices as described in claim 4 or 5, and a servo motor, wherein the servo motor drives the second rotating shaft of the temporary tool magazine through a chain or a pulley . A tool changing method for a tool changing device according to any one of claims 4 to 5, comprising the steps of: clamping a chuck of the spindle to a first cutter; and placing the plurality of second cutters respectively Entering into a plurality of cutter positions of the cutter head; the auxiliary cutter arm moves to the upper portion of the cutter head; the chuck of the auxiliary cutter arm is lowered and a second cutter is clamped, and the position of the second cutter to be clamped is formed Vacancy; the auxiliary arm is raised; the main shaft and the auxiliary arm are respectively moved above the first carrier and the second carrier of the rotary table of the temporary magazine; the spindle is lowered and the first clamped to the chuck Inserting the cutter into the first carrier, the auxiliary cutter arm descending and placing the second cutter clamped on the chuck into the second carrier; the spindle and the auxiliary cutter arm are raised, the turntable rotating to make the first carrier And transposing the second carrier; the main shaft descends and the second cutter located in the second carrier is clamped by the collet thereof, the auxiliary cutter arm is lowered and the collet is clamped by the collet to be located in the first carrier a first cutter; the auxiliary cutter arm moves to the knive forming the knive Upper bits; the auxiliary arm and the first tool holder drop thereon is placed in the chuck of the tool bit vacancy formed cutterhead.