TWM658338U - Operation driving mechanism of tool magazine - Google Patents

Abstract

The present application provides a tool magazine operation drive mechanism, which includes a fixed seat, a turntable, a drive motor, a driving member, a driven member and a gear device. The rear side of the turntable is rotatably arranged on a fixed seat, and a rotating gear is arranged on the front side of the turntable, and a plurality of tool sleeves are arranged around the outer side of the rotating gear; the driving motor is arranged on the front side of the turntable, and the driving motor has a rotating shaft; the driving member is connected to the rotating shaft and rotates with it, and the driving member has two cams; the driven member is connected to the driving member, and a plurality of grooves are arranged around the circumference of the driven member, and the grooves are clutched to engage the two cams, so that the driving member drives the driven member to generate intermittent rotation; the gear device is connected between the rotating gear and the driven member. In this way, the tool sleeve on the turntable can achieve accurate rotation and positioning during the tool changing process.

Description

Tool magazine drive mechanism

The present application relates to a disc-type tool magazine, and more particularly to a driving mechanism for the tool magazine, which drives a turntable by intermittent rotation.

The traditional tool magazine drive mechanism of machine tools mainly includes a disc-type tool magazine, a servo motor, a speed reducer, a transmission device, an encoder, etc. The tool magazine has a turntable and multiple tool sleeves. The tool sleeves are used to accommodate different tools. The servo motor is connected to the speed reducer, which drives the turntable to rotate through the transmission device. The encoder is used to detect the rotor speed and rotation angle of the servo motor to ensure that the turntable can accurately rotate to the specified position.

Since the aforementioned mechanism uses a servo motor as a power source and needs to be used with an encoder, the cost of the mechanism is relatively high. In addition, the servo motor, speed reducer, transmission device, and encoder are all installed on the back of the tool magazine, making maintenance difficult.

To solve the above problems, the present application discloses a tool magazine operation drive mechanism, which uses a general electric motor as a power source to drive an intermittent device, thereby eliminating the high-cost servo motor and effectively reducing the cost of the entire system. At the same time, the mechanism ensures that the tool holder can be accurately rotated and positioned, thereby improving the efficiency of the tool change operation.

To achieve the aforementioned objectives, the present application provides, in one embodiment, a tool magazine operating drive mechanism, which includes a fixed seat, a turntable, a drive motor, a driving member, a driven member and a gear device. The turntable has a front side surface and a rear side surface. The rear side surface of the turntable is rotatably arranged on a fixed seat. The front side surface is provided with a rotating gear, and a plurality of knife sleeves are arranged around the outer side of the rotating gear. The driving motor is arranged on the front side surface of the turntable, and the driving motor has a rotating shaft. The driving member is connected to the rotating shaft and rotates with it, and the driving member has two cams. The driven member is connected to the driving member, and a plurality of grooves are arranged around the periphery of the driven member. The grooves are clutched and engaged with the two cams so that the driving member drives the driven member to produce intermittent rotation. The gear device is connected between the rotating gear and the driven member.

Thus, the present application does not use a servo motor as a driving source, thus avoiding a complex control system and corresponding electronic components, thereby effectively reducing the cost of the overall system.

At the same time, the present application adopts an intermittent device to drive the rotation of the turntable, so that the tool sleeve on the turntable can be accurately rotated and positioned during the tool changing process, thereby improving the efficiency and accuracy of the tool changing operation.

In addition, the driving motor, the driving member, the driven member and the gear device of the present application are all arranged at the front side of the turntable, which has the advantage of being easy to repair and maintain.

In order to facilitate the explanation of the central idea of the present application in the above application content column, it is expressed in a specific embodiment. In addition, in order to better explain the principle of the present application, specific language will be used to describe these examples. However, it should be made clear that this does not mean that the scope of the present application is limited.

Professionals in the relevant technical fields may think of and make various modifications and further improvements, including the technical features described in this article and any other applications of the principles of this application. These modifications and applications should be considered within the scope of this application. In addition, in order to improve readability, some of the components are omitted in some diagrams, or are depicted using imaginary lines.

Please refer to FIG. 1 to FIG. 11 , the tool magazine operation drive mechanism 100 of the present application includes a fixed base 10, a rotating disk 20, a driving motor 30, a driving member 40, a driven member 50 and a gear device 60. The tool magazine operation drive mechanism 100 is used in a machine 1 of a processing machine. The operation drive mechanism 100 is mounted on the machine 1 with the fixed base 10, and as shown in FIG. 2 and FIG. 3 , the rotating disk 20 is in front of the fixed base 10, and the tool changing mechanism 2 is behind the fixed base 10.

The turntable 20 has a front side surface 21 and a rear side surface 22. The rear side surface 22 of the turntable 20 is rotatably disposed on the fixed seat 10. The front side surface 21 is provided with a rotating gear 23. A plurality of tool sleeves 24 are disposed around the outer side of the rotating gear 23. Each tool sleeve 24 is used to insert a tool, and the tool corresponding to the tool sleeve 24 can be exchanged with the tool of the spindle of the processing machine through the tool changing mechanism 2.

In addition, the turntable 20 has an opening 25 that passes through the front side surface 21 and the rear side surface 22. The rotating gear 23 is disposed around the circumference of the opening 25, and the outer circumference of the rotating gear 23 has a tooth portion 231, and the tooth portion 231 is engaged and connected with the gear device 60.

The driving motor 30 is a general electric motor and is disposed on the front side 21 of the turntable 20. The driving motor 30 has a rotating shaft 31. In the embodiment of the present application, a supporting plate 70 is further included. The supporting plate 70 is assembled on the fixing base 10 through the opening 25. The supporting plate 70 is used to mount the driving motor 30 thereon. In some embodiments, the supporting plate 70 is connected to the fixing base 10 through a plurality of brackets 71 extending through the opening 25, so that the supporting plate 70 mounts the driving motor 30 on the front side 21 of the turntable 20, which is conducive to assembly and maintenance. Among them, the rotating shaft 31 is not coaxial with the axis of the rotating gear 23, that is, the driving motor 30 is offset relative to the rotating gear 23.

The active member 40 is connected to the rotating shaft 31 of the driving motor 30 and rotates with it. The active member 40 has two cams 41 facing the rotating disk 20, and each cam 41 is rotatably mounted with a bearing 42. In the embodiment of the present application, the two cams 41 are symmetrically arranged at an angle of 180 degrees.

In another embodiment of the present application, an angle sensing device 80 is further included, which includes a proximity switch 81 and two sensed protrusions 82 disposed around the active member 40. The proximity switch 81 senses the sensed protrusions 82 to detect the rotation information of the active member 40, and sends a corresponding signal according to the rotation information to control the operation of the drive motor 30. The two sensed protrusions 82 are symmetrically disposed at an angle of 180 degrees, and the two sensed protrusions 82 are staggered with the two cam shafts 41 at an angle of 90 degrees. In the present application, the number of proximity switches 81 is set to two, and the number of sensed protrusions 82 is set to four.

The driven member 50 is connected to the driving member 40 and rotates with it. A plurality of grooves 51 are arranged around the circumference of the driven member 50, and the grooves 51 are clutchedly engaged with the two cams 41, so that the driving member 40 drives the driven member 50 to generate intermittent rotation. In the embodiment of the present application, the driven member 50 has a driven shaft 52 mounted on the supporting plate 70, and the driven member 50 has a plurality of spacers 53 arranged around the driven shaft 52 as the center, and there is a groove 51 between every two spacers 53, and the number of grooves 51 is 6, and the grooves 51 are arranged at intervals of 60 degrees. Furthermore, each spacer 53 has a force-applying section 531 and a connected sliding section 532 on both sides, so that the cam 41 and the bearing 42 can slide in contact. The force-applying section 531 of each spacer 53 tapers toward the axis of the follower 50, and each force-applying section 531 is straight, and each sliding section 532 is arc-shaped.

The gear device 60 is connected between the rotating gear 23 and the driven member 50. The gear device 60 includes a driven gear 61, a first transmission gear 62 and a second transmission gear 63. The driven gear 61 is connected to the driven shaft 52, the first transmission gear 62 and the second transmission gear 63 are coaxially connected to the carrier plate 70, and the first transmission gear 62 is engaged with the driven gear 61, and the second transmission gear 63 is engaged with the tooth portion 231 of the rotating gear 23. The reduction gear ratio of the second transmission gear 63 to the rotating gear 23 is 5:1, and the number of the tool sleeves 24 is 30. In other words, the setting angle of each tool sleeve 24 is 12 degrees, that is, when the driven member 50 rotates 60 degrees, the rotating gear 23 can rotate 12 degrees, that is, the tool sleeve 24 rotates to a tool changing position.

The device further includes a cover member 90, which covers the active member 40, the driven member 50 and the gear device 60 to provide a protective effect and function.

Please refer to Figures 6 to 11, which are schematic diagrams illustrating the state in which the active member 40 intermittently drives the driven member 50, thereby intermittently driving the rotating gear 23 to rotate. As shown in Figure 6, the two cams 41 are respectively the first cam 411 and the second cam 412, the first cam 411 is on the top, and the second cam 412 is on the bottom, and the first cam 411 and the second cam 412 are simultaneously in contact with the two sliding sections 532 of the corresponding spacer 53, which is the initial position of the active member 40.

As shown in FIG. 7 , when the active member 40 rotates 30 degrees clockwise from the position shown in FIG. 6 , the first cam 411 and the second cam 412 are in a slipping state relative to the spacer 53 , and the first cam 411 gradually disengages from the sliding section 532 clockwise, while the second cam 412 moves into the groove 51 . At this time, the first cam 411 and the second cam 412 have not yet pushed the driven member 50 .

As shown in FIG8 , when the active member 40 rotates 30 degrees clockwise from the position in FIG7 (i.e., the active member 40 rotates 60 degrees), the first cam 411 has disengaged from the spacer 53, and the second cam 412 further enters the inner end of the groove 51 and pushes against the force application section 531 of the spacer 53, so that the second cam 412 pushes the spacer 53, so that the driven member 50 is gradually driven.

As shown in FIG9 , the active member 40 continues to rotate to a position of 90 degrees, so that the first cam 411 and the second cam 412 are in a left and right position as shown in the figure. At this time, during the process of the second cam 412 pushing against the force application section 531 of the spacer 53, the driven member 50 has gradually rotated 30 degrees.

Continuing to refer to FIG. 10 , the driving member 40 continues to rotate to a position of 120 degrees, at which time the first cam 411 gradually rotates close to and contacts the spacer 53, and the second cam 412 moves to the middle of the groove 51 and pushes against the spacer 53, allowing the driven member 50 to continue to rotate to a position of 60 degrees. At this time, through the transmission of the aforementioned gear device 60, the rotating gear 23 can rotate 12 degrees, that is, the aforementioned tool holder 24 rotates to a tool changing position.

As shown in FIG. 11 , when the active member 40 rotates 60 degrees clockwise from the position in FIG. 10 (i.e., the active member 40 rotates 180 degrees), the first cam 411 and the second cam 412 respectively abut against the sliding section 532 of the spacer 53 and are in a slipping state (at this time, the first cam 411 and the second cam 412 do not push the driven member 50), so that the first cam 411 is at the bottom and the second cam 412 is at the top.

Thus, according to the action description of the aforementioned Figures 6 to 11, in the embodiment of the present application, the active member 40 realizes a 180-degree rotation, and the driven member 50 realizes a 60-degree rotation. It is worth noting that during the rotation of the active member 40 from 0 degrees to 60 degrees, the driven member 50 is stationary. However, when the active member 40 rotates from 60 degrees to 120 degrees, the driven member 50 rotates 60 degrees accordingly, and when the active member 40 rotates from 120 degrees to 180 degrees, the driven member 50 remains stationary. In view of this, the present application adopts a linkage structure of two cams 41 and the driven member 50, so that the active member 40 can rotate 120 degrees while the driven member 50 rotates one circle. Through this cooperation, the tool sleeve 24 on the turntable 20 can rotate to two tool changing positions, effectively improving the operating range of the turntable 20.

When the active member 40 rotates a predetermined angle at a constant angular velocity, the active member 40 does not drive the driven member 50; and when the active member 40 continues to rotate another predetermined angle, the active member 40 drives the driven member 50. Thus, through such a mechanism, the rotating gear 23 can be rotated in an intermittent manner, which is beneficial to the rotation and positioning of the tool holder 24 during the tool changing process.

Therefore, the driving member 40 and the driven member 50 in the present application can be regarded as an intermittent device. The driving motor 30 is used to drive the intermittent device so that the driving member 40 and the driven member 50 can be intermittently transmitted in a clutched manner, thereby driving the rotating gear 23 to rotate intermittently, so as to achieve precise rotation and positioning of the turntable 20, which is convenient for tool changing operations.

In summary, this application has the following advantages:

1. The drive motor 30 of the present application is a general electric motor, which avoids the complex control system and corresponding electronic components required for the servo motor, thereby reducing the cost of the overall system.

2. The present application adopts an intermittent device to drive the rotation of the turntable 20, so that the tool sleeve 24 on the turntable 20 can be accurately rotated and positioned during the tool changing process, thereby improving the efficiency and accuracy of the tool changing operation.

3. The driving motor 30, the driving member 40, the driven member 50 and the gear device 60 of the present application are all arranged at the front side of the turntable 20, which is convenient for repair and maintenance.

Although this application is described with a best embodiment, those skilled in the art can make various changes without departing from the spirit and scope of this application. The above embodiments are only used to illustrate this application and are not used to limit the scope of this application. All modifications or changes that do not violate the spirit of this application are within the scope of the patent application of this application.

1: Machine 2: Tool changer 100: Operation drive mechanism 10: Fixed seat 20: Turntable 21: Front side 22: Rear side 23: Rotating gear 231: Gear 24: Tool holder 25: Opening 30: Driving motor 31: Rotating shaft 40: Active part 41: Camshaft 411: First camshaft 412: Second camshaft 42: Bearing 50: Driven part 51: Groove 52: Driven shaft 53: Spacer 531: Force section 532: Sliding section 60: Gear device 61: Driven gear 62: First transmission gear 63: Second transmission gear 70: Carrier plate 71: Bracket 80: Angle sensor 81: Proximity switch 82: Detected convex part 90: Cover

[Figure 1] is an external view of the operating drive mechanism of the tool magazine of this application installed on the processing machine.

[Figure 2] is an external view of the operating drive mechanism of the tool magazine of this application.

[Figure 3] is a side view of the operating drive mechanism of the tool magazine of this application.

[Figure 4] is a front view of the operating drive mechanism of the tool magazine of this application.

[Figure 5] is a partial structural exploded view of the operating drive mechanism of the tool magazine of this application.

[Figure 6] to [Figure 11] are schematic diagrams of the operating status of the active parts and the driven parts of the operating drive mechanism of the tool magazine of this application.

2: Tool changing mechanism

10: Fixed seat

20: Turntable

21: Front side

23: Rotating gear

24: Knife sheath

25: Opening hole

30: Driving motor

31: Rotating axis

40: Active parts

41: Camshaft

42: Bearings

50: Follower

51: Groove

52: Driven shaft

53: Spacer

60: Gear device

61: Driven gear

62: First transmission gear

63: Second transmission gear

70: Carrier plate

71: Bracket

80: Angle sensing device

81: Proximity switch

82: Detected convex part

Claims (12)

A tool magazine operation drive mechanism includes: A fixed seat; A turntable having a front side and a rear side, the turntable is rotatably arranged on the fixed seat with the rear side, the front side is provided with a rotating gear, and a plurality of tool sleeves are arranged around the outer side of the rotating gear; A drive motor is arranged on the front side of the turntable, and the drive motor has a rotating shaft; An active member is connected to the rotating shaft and rotates with it, and the active member has two cams; A driven member is connected to the driving member, and a plurality of grooves are arranged around the driven member, and the grooves are engaged with the two cams in a clutching manner so that the driving member drives the driven member to generate intermittent rotation; and a gear device is connected between the rotating gear and the driven member. The operating drive mechanism of the tool magazine as described in claim 1, wherein the follower is surrounded by a plurality of spacers, and there is a groove between every two of the spacers. As described in claim 2, the operating drive mechanism of the tool magazine, wherein each of the spacer members has a force application section and a connected sliding section on both sides for the two cams to slide in contact with each other; when the two cams simultaneously contact the two sliding sections, the two cams are in a sliding state relative to the spacer, and when one of the cams contacts one of the force application sections, it can push against the corresponding spacer, so that the active member intermittently drives the driven member. As described in claim 3, the operating drive mechanism of the tool magazine, wherein the two force-applying sections of each of the spacers taper toward the axis of the driven member, and each of the force-applying sections is straight, and each of the sliding sections is arc-shaped. The operating drive mechanism of the tool magazine as described in claim 4, wherein the two cams are symmetrically arranged at an angle of 180 degrees. The operating drive mechanism of the tool magazine as described in claim 5, wherein the number of the grooves is 6 and the grooves are arranged at intervals of 60 degrees. The operating drive mechanism of the tool magazine as described in claim 1 further includes a supporting plate, the turntable has an opening penetrating the front side and the rear side, the supporting plate is assembled on the fixed seat through the opening, and the driving motor is mounted on the supporting plate. The operating drive mechanism of the tool magazine as described in claim 7 further includes an angle sensing device for detecting the rotation information of the active part; the rotating gear is arranged around the periphery of the opening. The operating drive mechanism of the tool magazine as described in claim 8, wherein the angle sensing device includes a proximity switch and two sensed protrusions arranged on the periphery of the active part, and the two sensed protrusions are symmetrically arranged at an angle of 180 degrees; the two cams are symmetrically arranged at an angle of 180 degrees, and the two sensed protrusions are staggered with the cams at an angle of 90 degrees. As described in claim 5, the tool magazine's operating drive mechanism, wherein the two cam shafts are rotatably mounted with a bearing respectively. The operating drive mechanism of the tool magazine as described in claim 7, wherein the outer periphery of the rotating gear has a tooth portion meshingly connected to the gear device, and the rotating shaft is not coaxial with the axis of the rotating gear. The operating drive mechanism of the tool magazine as described in claim 11, wherein the driven member has a driven shaft mounted on the supporting plate, and the gear device includes a driven gear, a first transmission gear and a second transmission gear, the driven gear is connected to the driven shaft, the first transmission gear and the second transmission gear are coaxially connected to the supporting plate, and the first transmission gear is engaged with the driven gear, and the second transmission gear is engaged with the tooth portion of the rotating gear; it also includes a cover member, which is covered on the driving member, the driven member and the gear device.

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