TW201619529A - Automatic tool change system and power transmission device and speed reducer thereof - Google Patents

Abstract

Disclosed are an automatic tool change system and a power transmission device and a speed reducer thereof. The speed reducer comprises a housing, a power output shaft, and an adjustment shaft. The power output shaft and the adjustment shaft engage with each other and are arranged in a rotatable manner in the housing. The power output shaft is driven by a spindle of a motor to rotate so as to drive displacement of a tool change arm of a tool change mechanism. The adjustment shaft comprises a driving end located outside the housing for being coupled with a tool for rotating the tool thereby achieving a purpose of correcting malfunctioning or calibrating. The power transmission device comprises the speed reducer and the power transmission device constitutes a part of the automatic tool change system.

Description

Automatic tool change system and its power transmission device and reducer

The invention relates to an automatic tool change structure of a processing machine; in particular to an automatic tool change system and a power transmission device and a speed reducer.

1 shows an automatic tool change system of a known processing machine, comprising a servo motor 1, a speed reducer 2 and a tool change mechanism 3. The servo motor 1 has the advantages of accurate and rapid speed control, and large output power, and is therefore often selected for use in an automatic tool change system; the purpose of the speed reducer 2 is to reduce the output speed of the servo motor 1 so as to be accurate. The tool change arm 3a of the tool change mechanism 3 is stably controlled to perform a tool change switching operation.

Referring to FIG. 2 again, the known speed reducer 2 includes a casing 2a, and a helical gear 2b and a power output shaft 2c located in the casing 2a. Wherein a part of the helical gear 2b is meshed with one of the spindles 1a of the servomotor 1 and the other part is meshed with a gear 2d of the power output shaft 2c, whereby the power output shaft 2c can drive the tool change mechanism 3 internal parts to achieve the purpose of tool change control. However, in the course of the tool change, if the tool change arm 3a needs to be trouble-shooted due to a collision, the servo motor 1 must be removed and the speed reducer 2 must be disassembled, so that the tool can be used to drive the drive. The power output shaft 2c in the casing 2a achieves the purpose of troubleshooting or correction. However, it is inconvenient to increase the operation, and after the troubleshooting or correction is completed and replaced, the induced relative position of the encoder 4 disposed above the servo motor 1 is liable to be deviated. Therefore, there are still some improvements in the automatic tool change system.

In view of the above, an object of the present invention is to provide an automatic tool change system, a power transmission device thereof and a speed reducer, the structure of which can be manually eliminated or corrected manually.

In order to achieve the above object, the present invention provides a speed reducer comprising a casing, a power output shaft and an adjustment shaft. The power output shaft is rotatably disposed in the casing, and has a first tooth portion on the body thereof; the adjustment shaft is rotatably disposed in the casing, and the body has a second tooth portion and the body The first tooth portion is engaged, and the adjusting shaft has a driving end located outside the casing.

The present invention further provides a power transmission device for an automatic tool change system, comprising a motor having a rotatable spindle, and a reducer coupled to the motor, the reducer including a casing, and being disposed in the casing a power output shaft and an adjustment shaft, wherein the power output shaft is driven by the spindle of the motor, the adjustment shaft and the power output shaft are mutually meshed, and the adjustment shaft has a casing outside the casing A driver.

The invention further provides an automatic tool change system comprising a body, a tool change mechanism and a power transmission device. The tool change mechanism includes a cam disposed in the body and a main shaft, the cam rotates to reciprocate the main shaft along a straight line, and one end of the main shaft is located outside the machine body and is coupled to a tool change arm; the power transmission device The utility model is disposed above the body and comprises a motor and a reducer, the motor has a spindle for driving the power output shaft of the reducer, and the reducer further comprises an adjustment shaft and the power output shaft. The drive shaft is driven, and the adjustment shaft has a driving end exposed outside the reducer.

The effect of the invention is that the adjusting shaft has an exposed driving end to facilitate the direct driving of the tool and the rotation of the power output shaft for fast troubleshooting or correction purposes.

[this invention]

100‧‧‧Automatic tool change system

10‧‧‧ body

20‧‧‧Tool changer

22‧‧‧ cam

24‧‧‧ Spindle

26‧‧‧Change arm

30‧‧‧Power Transmission

32‧‧‧Reducer

321‧‧‧Shell

321a‧‧‧ top board

321b‧‧‧floor

322‧‧‧Power output shaft

322a‧‧‧Extension

322b‧‧‧first tooth

323‧‧‧Adjustment axis

323a‧‧‧Driver

323b‧‧‧second tooth

33‧‧‧ teeth

34‧‧‧Motor

34a‧‧‧ mandrel

36‧‧‧Flange

38‧‧‧ helical gear

39‧‧‧Encoder

Figure 1 is a schematic illustration of a known automatic tool change system.

2 is an enlarged view of a servo motor and a speed reducer of the automatic tool change system of FIG. 1.

3 is a schematic diagram of an automatic tool change system in accordance with a preferred embodiment of the present invention.

Figure 4 is an enlarged view of the servo motor and reducer of the automatic tool change system of Figure 3.

In order to explain the present invention more clearly, the preferred embodiment is described in detail with reference to the drawings. As shown in FIG. 3, an automatic tool change system 100 according to a preferred embodiment of the present invention includes a body. 10. A tool change mechanism 20 and a power transmission device 30. The power transmission device 30 further includes a reducer 32 and a motor 34.

The tool change mechanism 20 includes a cam 22, a main shaft 24 and a tool change arm 26. The cam 22 and the main shaft 24 are disposed in the body 10, and the cam 22 is driven to rotate, thereby driving the main shaft 24 to reciprocate up and down in a vertical direction; the main shaft 24 is further controlled to rotate, and the bottom end thereof Located outside the body 10, and affixing the tool change arm 26, the tool change arm 26 is swung with the rotation of the spindle 24 to complete the tool change switching action.

As shown in FIG. 4 , the reducer 32 of the power transmission device 30 includes a casing 321 , a power output shaft 322 and an adjustment shaft 323 . The casing 321 is fixed on the body 10 by a flange 36. The casing 321 has a top plate 321a and a bottom plate 321b. The power output shaft 322 and the adjusting shaft 323 are respectively supported by the bearing and rotatably and parallelly disposed in the casing 321 , wherein the power output shaft 322 has a power output The end 322a is located outside the bottom plate 321b of the casing 321, and the output end 322a is transmitted through a tooth member 33 to drive the cam 22 of the tool change mechanism 20; the adjusting shaft 323 has a driving end 323a located in the casing 321 Outside the top plate 321a, the driving end 323a is provided with a tool (not shown) directly coupled from the outside of the reducer 32 to drive the adjustment shaft 323. In addition, the body of the power output shaft 322 of the reducer 32 has a first tooth portion 322b, and the body portion of the adjusting shaft 323 has a second tooth portion 323b engaged with the first tooth portion 322b, so that the power The output shaft 322 and the adjustment shaft 323 are rotatable in synchronization.

The motor 34 of the power transmission device 30 is selected in the present embodiment as a servo motor widely used for position and speed control. The motor 34 is fixed to the casing 321 of the reduction gear 32 and has a rotatable The mandrel 34a protrudes into the casing 321 for driving the power take-off shaft 322. In this embodiment, the two ends of a helical gear 38 are respectively engaged with the helical gear at the front end of the spindle 34a and the first tooth portion 322b, so that the power output shaft 322 can be the center of the motor 34. The shaft 34a is driven to drive the cam 22 to control the lifting and lowering of the tool change arm 26. It should be noted that the structure of the spindle 34a of the motor 34 for driving the power output shaft 322 is not limited to the helical gear 38. For example, a plurality of gears may be engaged as an intermediate transmission.

In the above embodiment, the adjustment shaft 323 of the speed reducer 32 can rotate synchronously with the power output shaft 322, so that the rotation of the power output shaft 322 is not interfered, and the tool change operation can be ensured smoothly. When the tool changer 26 needs to be trouble-removed or corrected due to a collision, the operator does not need to take the motor 34 and disassemble the reducer 32 in a state of being stopped, that is, the use of the gear The tool is directly coupled to the driving end 323a of the adjusting shaft 323, and can drive the power output shaft 322 to rotate when the adjusting shaft 323 is driven, so that the troubleshooting or correcting action can be quickly completed. Therefore, the structure of the present invention can be manually removed for troubleshooting or correction. It has the effect of quick repair and improves work efficiency. Further, since the motor 34 does not need to be detached, the relative position of the induction of the encoder 39 coupled to the motor 34 is not deviated, and the accuracy of the tool change position can be ensured.

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

30‧‧‧Power Transmission

321‧‧‧Shell

321a‧‧‧ top board

321b‧‧‧floor

322‧‧‧Power output shaft

322a‧‧‧Extension

322b‧‧‧first tooth

323‧‧‧Adjustment axis

323a‧‧‧Driver

323b‧‧‧second tooth

33‧‧‧ teeth

34‧‧‧Motor

34a‧‧‧ mandrel

36‧‧‧Flange

38‧‧‧ helical gear

39‧‧‧Encoder

Claims (9)

A speed reducer comprising: a casing; a power output shaft rotatably disposed in the casing, and having a first tooth portion on the body; and an adjustment shaft rotatably disposed on the casing The casing has a second tooth portion that meshes with the first tooth portion, and the adjustment shaft has a driving end located outside the casing. The reducer according to claim 1, wherein the casing has a top plate and a bottom plate; the power output shaft is disposed in parallel with the adjustment shaft, and the power output shaft has a power output end located outside the bottom plate of the casing. The driving end of the adjusting shaft is located outside the top plate of the casing. A power transmission device for an automatic tool change system, comprising: a motor having a rotatable mandrel; a reducer coupled to the motor, the reducer comprising a casing, and a casing disposed in the casing a power output shaft and an adjustment shaft, wherein the power output shaft is driven by the spindle of the motor, the adjustment shaft and the power output shaft are mutually meshed, and the adjustment shaft has one outside the casing Driver side. The power transmission device of the automatic tool change system of claim 3, wherein the motor is a servo motor. The power transmission device of the automatic tool change system of claim 4, wherein the power output shaft is disposed in parallel with the adjustment shaft, and the body of the power output shaft has There is a first tooth portion, and the body portion of the adjusting shaft has a second tooth portion engaged with the first tooth portion. The power transmission device of the automatic tool change system according to claim 5, wherein the casing has a top plate and a bottom plate; the power output shaft has a power output end located outside the bottom plate of the casing, and the driving shaft of the adjusting shaft The end is located outside the top plate of the casing. An automatic tool change system comprises: a body; a tool change mechanism comprising a cam disposed in the body and a spindle, wherein the cam rotates to move the spindle along a straight line, and one end of the spindle is located outside the machine body And connecting a change arm; and a power transmission device disposed above the body, and comprising a motor and a reducer, the motor having a spindle for driving the power output shaft of the reducer to rotate, the reducer The utility model further comprises an adjusting shaft and the power output shaft meshing with each other, and the adjusting shaft has a driving end exposed outside the speed reducer. The automatic tool change system of claim 7, wherein the motor of the power transmission device is a servo motor. The automatic tool change system of claim 7, wherein the speed reducer of the power transmission device comprises a casing having a top plate and a bottom plate; the power output shaft is disposed in parallel with the adjusting shaft, the power output shaft The body portion has a first tooth portion, and the body portion of the adjusting shaft has a second tooth portion that meshes with the first tooth portion, and the power output shaft has a one located outside the bottom plate of the casing At the output end, the driving end of the adjusting shaft is located outside the top plate of the casing.