TWM559219U - Transmission device of tool changer arm - Google Patents

Abstract

The present invention provides a gear changer transmission device, comprising: a drive shaft, a first drive portion and a second drive portion are disposed along the axial direction; a tool change arm is disposed at an end of the drive shaft; a spline sleeve is sleeved on the first driving portion; a first motor is connected to the spline sleeve for driving the spline sleeve to rotate, so that the driving shaft drives the tool changing arm to rotate; a rotating member is connected The sleeve is disposed on the second driving portion; and a second motor is coupled to the rotating member for driving the transmission shaft to drive the tool changing arm to perform the lifting operation. In order to achieve accurate tool change action.

Description

Gear changer transmission

The present invention relates to a transmission device, in particular to a transmission device for a tool changer, which uses two motors to drive a single drive shaft to perform a rotation and lifting operation for use in a tool change operation.

According to the conventional tool changer shaft structure, a drive unit is used to drive a change tool shaft to perform rotation and up and down reciprocation to perform a tool change operation.

The driving unit generally includes a cam, a rocker arm and a tool changer shaft. The cam has an annular groove facing the rocker arm and a rolling groove disposed at the periphery. The rocker arm has a rolling member disposed on the annular groove. The tool change shaft has a rolling bearing capable of meshing with the rolling groove of the cam, and the tool change shaft is connected to one end of the rocker arm; when the cam rotates, the rolling member can move along the annular groove, thereby driving the rocker arm to reciprocate and swing, The rocker arm causes the tool change shaft to reciprocate up and down, and when the cam rotates, through the contact relationship between the rolling groove and the rolling bearing, the tool change shaft is rotated, so as to be used for the movement and rotation of the tool changer of the machine tool, and executed Tool change operation.

However, conventionally, the cam is used as the rotation of the tool change shaft and the manipulation of the up and down reciprocating motion, which is disadvantageous in the high manufacturing cost of the cam structure, and the rolling member and the annular groove are easy to wear under normal operation, and the fitting precision is poor. The operation is not accurate enough, affecting the machining operation, and the overall structure is also complicated, and the installation and maintenance are troublesome. In addition, the cam needs to reserve the stopping angle for the rotation operation, so that the climbing angle is too small, and the resistance is too large, resulting in the positioning of the tool change. Unable to be precise.

In order to solve the above problems, the present invention discloses a gear changer transmission device that uses two motors to drive a single drive shaft to perform a rotation and a lift operation for use in a tool change operation.

In order to achieve the above object, an embodiment of the present invention provides a gear changer transmission device, including: a drive shaft, a first drive portion and a second drive portion are disposed along the axial direction; The sleeve is disposed at an end of the transmission shaft; a spline sleeve is sleeved on the first driving portion; a first motor is coupled to the spline sleeve for driving the spline sleeve to rotate, so as to drive the transmission shaft to change The rotating arm rotates; a rotating member is sleeved on the second driving portion; and a second motor is coupled to the rotating member for driving the driving shaft to drive the changing arm to perform lifting operation.

In this way, the creation of the cam mechanism is eliminated, so that the manufacturing cost is reduced, the problem of cam wear is more avoided, and the use of the two motor devices as the power drive can make the overall tool change operation more precise and intelligent.

In addition, the first motor and the second motor of the present invention are both servo motors, which are controlled by the encoder to make the motion positioning more precise, and the creation does not require the reserved stopping angle of the cam mechanism, so the creation will be able to Complete motion positioning within 360 degrees of full circumference, with high precision positioning.

The exemplified embodiments of the present invention are described in detail below with reference to the accompanying drawings, and are not intended to limit the technical principles of the present invention to the specific disclosed embodiments, and the scope of the present invention is limited only by the scope of the patent application, including alternatives, modifications, and Equivalent.

Referring to FIG. 1 to FIG. 5, the gear changer of the present invention is suitable for a tool change operation of a machine tool, wherein the gear change arm transmission device is disposed on a body 1 and includes a first A drive shaft 10, a change arm 20, a spline sleeve 30, a first motor 40, a rotary member 50 and a second motor 60. Wherein, the end of the drive shaft 10 is provided with a tool change arm 20 for performing a tool change operation on the machine tool. The first motor 40 and the second motor 60 are each a servo motor.

The drive shaft 10 is provided with a first driving portion 11 and a second driving portion 12 in the axial direction. The first driving portion 11 is sleeved by the spline sleeve 30, and the second driving portion 12 is connected to the rotating member 50. In the present embodiment, the first driving portion 11 includes a spline groove 111 and a plurality of first balls 112 disposed between the spline groove 111 and the spline sleeve 30 to connect the spline sleeve 30 with the transmission shaft 10. The second driving portion 12 includes a spiral groove 121 disposed along the axial direction of the transmission shaft 10 and a plurality of second balls 122 disposed between the spiral groove 121 and the rotating member 50 to rotate the rotating member 50 and the transmission. The shaft 10 is connected. In addition, a first bearing 31 is further disposed between the outer periphery of the spline sleeve 30 and the body 1.

The first motor 40 is disposed on the body 1 and located on the side of the transmission shaft 10, and the first motor 40 has a first output shaft 41. The first output shaft 41 is coupled to the spline sleeve 30 through a first transmission assembly 70. In order to drive the spline sleeve 30 to rotate. The first transmission component 70 is a pulley set including a first transmission component 71, a first pulley 72 and a second pulley 73. The first pulley 72 is connected to the first output shaft 41, and the second pulley 73 is connected. The spline sleeve 30 is disposed, and the first transmission member 71 is a belt and is disposed between the first pulley 72 and the second pulley 73 for transmitting power. Further, the outer diameter of the first pulley 72 is smaller than the outer diameter of the second pulley 73. Thereby, when the first output shaft 41 of the first motor 40 outputs power, the spline sleeve 30 can be rotated by the first transmission component 70, and is connected by a spline between the spline sleeve 30 and the transmission shaft 10. Therefore, the drive shaft 10 drives the tool change arm 20 to generate a rotating motion.

The rotary member 50 is a hollow sleeve for being sleeved on the transmission shaft 10. In the present embodiment, a second bearing 51 is further disposed between the outer periphery of the rotary member 50 and the body 1.

The second motor 60 is disposed on the body 1 and on the side of the propeller shaft 10 and is disposed on the same side as the first motor 40. The second motor 60 has a second output shaft 61. The axis of the first output shaft 41 is on the same line as the axis of the second output shaft 61 and is parallel to the axis of the drive shaft 10. In addition, the second output shaft 61 is drivingly coupled to the rotating member 50 through a second transmission assembly 80 to drive the rotating member 50 for lifting. The second transmission component 80 is a pulley set including a second transmission member 81, a third pulley 82 and a fourth pulley 83. The third pulley 82 is connected to the second output shaft 61, and the fourth pulley 83 is connected. The rotary member 50 is disposed on the third transmission pulley 82 and the fourth pulley 83 to transmit power. Further, the outer diameter of the third pulley 82 is smaller than the outer diameter of the fourth pulley 83, and the third pulley 82 has substantially the same outer diameter as the first pulley 72, and the fourth pulley 83 and the second pulley 73 have substantially the same outer diameter. .

Therefore, when the second output shaft 61 of the second motor 60 outputs power, the rotation member 50 can be rotated through the second transmission assembly 80, and there are a plurality of seconds between the rotation member 50 and the transmission shaft 10 The ball 122 is connected, and the drive shaft 10 drives the tool change arm 20 to generate a lifting motion.

Please refer to FIG. 3 to FIG. 5, which shows that the present invention is applied to the tool changing operation of the drawing, the rotary tool changing and the inserting knife. As shown in FIG. 3, the second motor 60 transmits the rotation member 50 through the second transmission assembly 80, so that the rotation member 50 drives the transmission shaft 10 to generate a downward displacement, so that the transmission shaft 10 can drive the tool change arm. 20 performs the knife pulling action.

Next, as shown in FIG. 4, the first motor 40 drives the spline sleeve 30 to rotate through the first transmission assembly 70, and the second motor 60 simultaneously drives the rotation member 50 to rotate through the second transmission assembly 80 at the same rotation speed to make the spline sleeve. The drive shaft 10 of the drive shaft 10 generates a rotational motion to cause the drive shaft 10 to drive the tool change arm 20 to perform a rotary tool change operation.

Finally, as shown in FIG. 5, after the tool changer 20 completes the rotary tool change, the second motor 60 is driven to drive the drive shaft 10 to perform an upward displacement action, so that the tool change arm 20 performs the knife insertion action to complete. The process of changing the tool.

Thereby, the present invention eliminates the cam mechanism as compared with the conventional structure, so that the manufacturing cost is reduced, and the problem of cam wear is more avoided. Furthermore, the present invention utilizes two motor devices as the action of driving rotation and up and down displacement, and the two motor devices can adopt a servo motor, so that the overall tool change operation is more precise and intelligent.

Although the present invention has been described in terms of a preferred embodiment, it is obvious to those skilled in the art that various changes can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any modification or change that is not in violation of the spirit of this creation is the scope of patent application for this creation.

1‧‧‧ Ontology
11‧‧‧First Drive Department
112‧‧‧First Ball
121‧‧‧Spiral groove
20‧‧‧Change arm
31‧‧‧First bearing
41‧‧‧First output shaft
51‧‧‧second bearing
61‧‧‧second output shaft
71‧‧‧First transmission
73‧‧‧Second pulley
81‧‧‧second transmission parts
83‧‧‧fourth pulley
10‧‧‧ drive shaft
111‧‧‧ spline slot
12‧‧‧Second drive department
122‧‧‧second ball
30‧‧‧ splined sleeve
40‧‧‧First motor
50‧‧‧Rotating parts
60‧‧‧second motor
70‧‧‧First transmission assembly
72‧‧‧First pulley
80‧‧‧Second drive assembly
82‧‧‧ Third pulley

[Fig. 1] is a schematic structural view of a transmission device for creating a tool changer. [Fig. 2] is a partial cross-sectional view showing the transmission device of the present tool changer. [Fig. 3] is a schematic diagram of the action of the actuator of the tool change arm of the present invention (1), showing the displacement of the drive shaft in the lower direction, and driving the tool change arm to perform the knife pulling action. [Fig. 4] is a schematic diagram of the action of the actuator of the tool change arm of the present invention (2). The rotation of the drive shaft is displayed, and the tool change arm is driven to perform a rotary tool change operation. [Fig. 5] is a schematic diagram of the action of the actuator of the tool change arm of the present invention (3). The displacement of the transmission axis is displayed, and the tool change arm is driven to perform the knife insertion action.

Claims (10)

A gear changer transmission device includes: a drive shaft, a first drive portion and a second drive portion are axially disposed; a tool change arm is disposed at an end of the drive shaft; a spline a sleeve is sleeved on the first driving portion; a first motor is coupled to the spline sleeve for driving the spline sleeve to rotate, so that the transmission shaft drives the tool change arm to rotate; a connecting sleeve is disposed on the second driving portion; and a second motor is coupled to the rotating member for driving the driving shaft to drive the changing arm to perform lifting operation. The gear changer transmission device of claim 1, wherein the first motor and the second motor are each a servo motor. The actuator of the tool change arm of claim 1, wherein the first driving portion comprises a spline groove and a plurality of first balls disposed between the spline groove and the spline sleeve, so that the spline sleeve Connected to the drive shaft. The actuator of the tool change arm of claim 3, wherein the first motor has a first output shaft, and the first output shaft is drivingly coupled to the spline sleeve through a first transmission member. The gear changer transmission device of claim 4, wherein the first transmission member is a belt; the first output shaft is coupled to a first pulley, and the spline sleeve is coupled to a second pulley, the first transmission The piece is wound around the first pulley and the second pulley, and the outer diameter of the first pulley is smaller than the outer diameter of the second pulley. The actuator of the tool change arm of claim 1, wherein the second driving portion comprises a spiral groove disposed along an axial direction of the transmission shaft, and a plurality of the spiral groove disposed between the spiral groove and the rotating member The second ball. The actuator of the tool changer of claim 6, wherein the second motor has a second output shaft, and the second output shaft is coupled to the rotary member via a second transmission member. The transmission arm changing device of claim 7, wherein the second transmission member is a belt; the second output shaft is coupled to a third pulley, and the rotary member is coupled to a fourth pulley, the second transmission The piece is wound around the third pulley and the fourth pulley, and the third pulley has an outer diameter smaller than the fourth pulley. The actuator of the tool changer of claim 1 or 3 or 6, wherein the first motor has a first output shaft, and the first output shaft is coupled to the spline sleeve through a first transmission assembly; The second motor has a second output shaft, and the second output shaft is transmitted and coupled to the rotating member through a second transmission component; and the axis line of the first output shaft and the axis of the second output shaft Located on the same line and parallel to the axis of the drive shaft. The gear changer transmission of claim 9, wherein the first transmission component and the second transmission component are each a pulley set.