TWM543750U - Tool holder resetting mechanism of automatic tool changing system - Google Patents

Description

Tool holder reset mechanism of automatic tool change system

This creation department is related to the automatic tool change mechanism; in particular, the tool holder reset mechanism of an automatic tool change system.

In addition to the shaft box, the conventional processing machine is equipped with a tool change mechanism and a tool magazine, so that the processing machine can select the tool in the tool magazine according to the processing operation. When the axis box is vertically raised and lowered at the tool change position and the machining position, That is to complete the tool change and processing operations.

The common swash plate type tool magazine is disposed beside the axle box and includes a cutter head and a plurality of tool holders. The two ends of the tool holder respectively form a pivoting portion and a clamping knife portion, wherein the pivoting portion is pivotally connected to the periphery of the cutter head to make the knife The clip can be pivoted relative to the cutter head, and the clamp portion is composed of two clamp arms, and a cutter bar combining the cutters is interposed between the two clamp arms, and each of the clamp arm ends is provided with a guide member mainly composed of a roller. When the axle box is in the tool change position, and the axle box is combined with the tool, and then moved to the machining position, the axle box abuts the pusher of the knife portion, so that the tool holder can be pivoted as the first axis. The position is pivoted to a second position. For example, the tool magazine disclosed in China Patent Certificate No. M508393 has the above structure.

However, in general, the axle box is mostly cylindrical, and it is difficult to provide a plane that can simultaneously abut the two thrust members. To solve this problem, the manufacturer often makes the axle box into a rectangular column shape, but this not only increases the axle box. Volume will increase production costs.

In view of this, the purpose of the present invention is to provide a tool holder reset mechanism for an automatic tool change system, which has a single pusher member to enable the spindle box to push the tool holder to achieve a cost reduction effect.

In order to achieve the above object, the tool holder reset mechanism of the automatic tool change system provided by the present invention comprises: a tool magazine comprising a cutter head and a plurality of tool holders, the cutter discs being controlled to rotate, the cutter holders being controlled along The periphery of the cutter head is disposed, and the cutter holders are pivotally connected to the cutter head to pivot between a first position and a second position, wherein each of the holders forms a clamping portion at the other end of the opposite pivotal portion And each tool holder includes a guiding member located between the pivoting portion and the clamping portion; a spindle box disposed on one side of the magazine and controlled to move up and down along a linear path relative to the magazine, the spindle box When moving downward, the headstock abuts the corresponding pusher of the tool holder to pivot the tool holder from the first position to the second position; a reset device is when the headstock moves upward The utility model is configured to drive the tool holder to return to the first position from the second position.

In an embodiment, the headstock includes a guide plate and an axle box, and the guide plate is disposed at a side edge of the axle box and located between the axle box and the tool magazine; when the axle box moves downward, the guide plate Respond to the pusher.

In one embodiment, the guide has a back surface opposite to a guiding surface, the back surface faces the axle box, the guiding surface faces the cutter head, and the guiding surface is between the top side and the back side The distance is greater than the distance between the bottom side of the guiding surface and the back surface.

In an embodiment, the guide plate has a long slot; the axle box is provided with at least one through hole; the tool holder reset mechanism further includes at least one restriction member; the restriction member passes through the long slot hole and the through hole, The guide is fixed to the axle box.

In an embodiment, the guide plate is provided with a plurality of positioning holes; the axle box is provided with at least one through hole; the tool holder resetting mechanism further comprises at least one limiting member; the limiting member passes through the positioning holes And the perforation to fix the guide plate to the axle box.

In an embodiment, the guide member includes a roller; the spindle housing abuts the roller.

In an embodiment, each of the tool holders includes a guiding hook between the pivoting portion and the clamping portion; the resetting device is disposed on the cutter head, and the resetting device includes an undercut, the hook is hooked to the guiding hook And can be controlled to reciprocate.

In an embodiment, the guide hook member includes a roller that hooks the roller.

The effect of this creation lies in the tool holder reset mechanism of the automatic tool change system. Only a single pusher can be used to push the tool holder, which not only reduces the number of pushers, but also eliminates the need for the spindle box. It has a rectangular column with a wide flat surface, which can reduce the cost.

In order to explain the present invention more clearly, a preferred embodiment will be described in detail with reference to the drawings. Referring to FIG. 1 and FIG. 2 , a tool holder reset mechanism 100 for an automatic tool change system according to a preferred embodiment of the present invention includes a tool magazine 10 , a spindle box 20 , and at least one restriction member 30 (this embodiment). There are two limiting members 30) and a resetting device 40.

The magazine 10 includes a cutter head 12 and a plurality of tool holders 14. The cutter head 12 includes a body 121 and a disc 122, wherein the body 121 is fixed, and the disc 122 is coupled to the body 121 in a controllably rotatable manner. Each of the holders 14 is disposed along the circumference of the disc 122 and includes a holder 141 and two rollers 142, 143. As shown in FIG. 3 and FIG. 4, one end of the holder 141 is pivotally connected to the disc 122 to form a pivoting portion 141a, and the other end forms a clamping portion 141b for clamping a shank S (see FIG. 1). . The holder 141 further has a first protrusion 141c and a second protrusion 141d between the pivoting portion 141a and the knurling portion 141b. The roller 142 and the roller 143 are respectively pivotally connected to the top ends of the first bump 141c and the second bump 141d. In this embodiment, the roller 142 and the first protrusion 141c constitute a guiding hook; the roller 143 and the second protrusion 141d constitute a guiding member.

The headstock 20 is disposed on the side of the magazine 10 and is controlled to move up and down along the linear path with respect to the magazine 10 to perform processing operations such as drilling. As shown in FIG. 2 and FIG. 3, the headstock 20 includes a shaft box 22 and a guide plate 24, wherein the side edge of the axle box 22 has a fixing plate 221, and the fixing plate 221 is provided with at least one through hole 221a, in this embodiment. The fixing plate 221 is provided with two through holes 221a; the guiding plate 24 is disposed on one side of the fixing plate 221, the guiding plate 24 has a back surface 241, and a guiding surface 242 and a flat surface 243 facing the back surface 241, wherein the back surface 241 Toward the axle box 22, the guiding surface 242 and the flat surface 243 are directed toward the tool magazine 10, and the flat surface 243 is connected to the guiding surface 242 and above the guiding surface 242. As shown in FIG. 5, the flat surface 243 is parallel to the back surface 241. Moreover, the distance W1 between the top side and the back surface 241 of the guide surface 242 is greater than the distance W2 between the bottom side of the guide surface 242 and the back surface 241. The guide plate 24 has a plurality of positioning holes 24a facing one side of the fixing plate 221, and in this embodiment, two positioning holes 24a (see Fig. 5).

The restricting member 30 can be a fixing pin or a combination of a bolt and a nut (not shown). The restricting member 30 passes through the through hole 221a and a positioning hole 24a thereof to fix the guide plate 24 to the fixing plate 221.

The resetting device 40 is disposed on the body 121 of the cutter head 12 and includes a retractable pull rod 42. In the embodiment, the resetting device 40 is a telescopic cylinder (such as a pneumatic cylinder or a hydraulic cylinder), and the pull rod 42 is exposed. One end forms a barb 421, and the pull rod 42 is controlled to retreat toward the inside of the cylinder to maintain the inner surface of the barb 421 in contact with the roller 142 of the guide hook member. It should be noted that the mechanism for driving the barb 421 to retreat is also achieved by the restoring force of the spring in addition to the above-mentioned telescopic cylinder.

Referring to FIG. 1 and FIG. 2, the state in which the headstock 20 is located at the tool change position L1 is shown. At this time, the tool holders 141 of all the tool holders 14 are located at the first position P1, and the barbs 421 of the resetting device 40 are hooked. The roller 142 located at the lowermost position of the magazine 10 and the roller 143 located on the same holder 141 abut against the bottom side of the guide 24.

Referring to Fig. 6, the state in which the headstock 20 is moved down to the processing position L2 is shown. During the downward movement of the headstock 20, since the distance W2 between the bottom side to the back surface 241 of the guiding surface 242 is smaller than the distance W1 between the top side of the guiding surface 242 and the back surface 241, the guide plate 24 follows the axle box 22 During the downward movement, the guide plate 24 will be biased by the roller 143 against the pusher holder 141 to the second position P2. At the same time, the position of the roller 143 is also changed from the bottom side of the guide surface 242 to the bottom side. From the top side to the flat side 243. When the headstock 20 completes the machining operation and moves from the machining position L2 to the tool change position L1, the pull rod 42 is controlled to retract toward the inside of the cylinder, so that the barb 421 pulls the tool holder 141 back to the first position P1.

In this embodiment, the roller 142 can reduce the friction between the barbs 421 and the barbs 421, but is not limited thereto. In an embodiment, the guide members can also have no rollers 142, and the barbs 421 are hooked at the first end. The bump 141c also functions to pull the holder 141 from the second position P2 to the first position P1 when the headstock 20 is moved upward.

In another embodiment, the resetting device can also be a torsion spring disposed on the pivoting portion 141a between the cutter head 12 and the tool holder 14. The headstock 20 is moved downward from the tool changing position L1 to the machining position L2, and when the thrust tool holder 141 is pivoted from the first position P1 to the second position P2, the torsion spring is twisted and generates an upward torque, so the spindle When the case 20 is moved upward, the upward torque can return the tool holder 14 to the first position P1.

In this embodiment, the headstock 20 abuts the roller 143 of the pusher to reduce the friction generated by the spindle 20 in the process of pushing the pusher. However, the guide member may be only a knife. The second protrusion 141d of the holder 141 can also achieve the effect of pivoting the holder 141 from the first position P1 to the second position P2 by pushing the second protrusion 141d.

According to the above, the tool holder reset mechanism 100 of the automatic tool change system of the present invention only needs a single roller 143 to make the spindle box 20 push the holder 141, which can reduce the roller 143 compared with the conventional tool magazine. The required number, the headstock 20 no longer needs to be deliberately made into a rectangular column with a wider plane, which can achieve the function of reducing the cost.

In the present embodiment, the positioning holes 24a are the same as the number of the through holes 221a, and the fixing member 30 is passed through the corresponding positioning holes 24a and the through holes 221a to achieve the function of the fixed guide 24. It is also worth mentioning that, in an embodiment, if the number of the positioning holes 24a of the guide plate 24 is larger than the number of the through holes 221a on the fixing plate 221, and the reset device 40 causes errors due to manufacturing or assembly, the spindle is made. When the movement of the box 20 pushes the roller 143 is not smooth, the user only needs to adjust the height of the guide plate 24 fixed to the axle box 22 to improve, in other words, through the change of the restriction member 30 through different positioning holes, to adjust the guide plate 24 With respect to the height position of the fixing base 221, when the tool holder 141 is at the first position P1, the bottom side of the guide plate 24 just abuts against the roller 143, and the user does not need to reassemble the reset device 40 or adjust the position of the tool magazine 10, thereby greatly increasing the use. Convenience. Moreover, the guide plate 24 has a smooth guiding surface 242, and the headstock 20 can be pushed by the guide plate 24 against the roller 143 to be smoother than the guide box 22.

In another embodiment, the fixing surface 241 of the guiding plate 24 can also have a long slot, and the upper and lower holes of the long slot are respectively adjacent to the top and bottom sides of the guide 24, and the limiting member 30 can be worn by The different hole sections of the through hole 221a and the long slot hole can also achieve the height position of the adjustment guide 24 relative to the fixed seat 221 .

The above is only a preferred embodiment of the present invention, and equivalent changes to the scope of the present application and the scope of the patent application are intended to be included in the scope of the present patent.

[This creation]
S‧‧‧Cutter
100‧‧‧Tool clamp reset mechanism
10‧‧‧Knife Library
12‧‧‧Cutter
121‧‧‧Ontology
122‧‧‧ disc
14‧‧‧Tool holder
141‧‧‧Knife holder
141a‧‧‧ pivotal parts
141b‧‧‧knife
141c‧‧‧first bump
141d‧‧‧second bump
142, 143‧‧‧ Wheels
20‧‧‧ headstock
22‧‧‧ axle box
221‧‧‧ fixed plate
221a‧‧‧Perforation
24‧‧‧ Guide
241‧‧‧ back
242‧‧‧ Guide surface
243‧‧ ‧ flat face
24a‧‧‧Positioning holes
30‧‧‧Restrictions
40‧‧‧Return device
42‧‧‧ lever
421‧‧‧
W1, W2‧‧‧ width
P1‧‧‧ first position
P2‧‧‧ second position
L1‧‧‧ tool change position
L2‧‧‧ processing location

Figure 1 is a side elevational view of a preferred embodiment of the present invention. Figure 2 is a side elevational view of some of the components of the above described preferred embodiment. Figure 3 is a partially enlarged view of the above preferred embodiment of the present invention. Figure 4 is a perspective view of some of the components of the above preferred embodiment of the present invention. Figure 5 is a schematic illustration of some of the components of the above-described preferred embodiment. Figure 6 is a schematic view showing the use of the above preferred embodiment.

10‧‧‧Knife Library

12‧‧‧Cutter

121‧‧‧Ontology

122‧‧‧ disc

14‧‧‧Tool holder

141‧‧‧Knife holder

142, 143‧‧‧ Wheels

20‧‧‧ headstock

22‧‧‧ axle box

24‧‧‧ Guide

30‧‧‧Restrictions

40‧‧‧Return device

42‧‧‧ lever

421‧‧‧

P1‧‧‧ first position

L1‧‧‧ tool change position

Claims (8)

A tool holder reset mechanism for an automatic tool change system, comprising: a tool magazine comprising a cutter head and a plurality of tool holders, the cutter discs being controlled to rotate, the cutter holders being disposed along a circumference of the cutter disc, and the cutter holders The tool holder is pivotally connected to pivot between a first position and a second position, wherein each of the holders forms a clamping portion at the other end of the opposite pivoting portion, and each of the holders includes a guiding member A pivot box is disposed on the side of the tool magazine and is controlled to move up and down along a linear path relative to the tool magazine. When the spindle box moves downward, the spindle box is pushed against The tool holder of the tool holder pivots the tool holder from the first position to the second position; a resetting device drives the tool holder to return to the second position when the spindle case moves upward First position. The tool holder reset mechanism of the automatic tool change system of claim 1, wherein the spindle box comprises a guide plate and an axle box, the guide plate is disposed at a side edge of the axle box and located between the axle box and the tool magazine. When the axle box moves downward, the guide plate pushes against the pusher. The tool holder reset mechanism of the automatic tool change system of claim 2, wherein the guide plate has a back surface opposite to a guiding surface, the back surface facing the axle box, the guiding surface facing the cutter head, And the distance between the top side of the guiding surface and the back surface is greater than the distance between the bottom side of the guiding surface and the back surface. The tool holder reset mechanism of the automatic tool change system of claim 2, comprising a limiting member; wherein the guiding plate has a long slot; the axle box is provided with at least one through hole; the limiting member passes through the long slot And the perforation to fix the guide plate to the axle box. The tool holder reset mechanism of the automatic tool change system of claim 2, comprising a limiting member; wherein the guiding plate is provided with a plurality of positioning holes; the axle box is provided with at least one perforation; the limiting member passes through the positioning Any one of the holes and the perforations are used to secure the guide to the axle box. The tool holder reset mechanism of the automatic tool change system of claim 1, wherein the pusher member comprises a roller; the spindle case abuts the roller. The toolholder resetting mechanism of the automatic tool change system of claim 1, wherein each of the tool holders comprises a guide hook member located between the pivoting portion and the knives portion; the resetting device is disposed on the cutter head, and the resetting device comprises There is a barb that hooks the guide hook and can be controlled to reciprocate. The tool holder reset mechanism of the automatic tool change system of claim 7, wherein the guide hook member comprises a roller, and the barb hooks the roller.