TWM560367U - Automatic tool change system for tool machine - Google Patents

Abstract

An automatic tool changing system for a machine tool includes a casing, a rotating shaft, a tool changing arm and a power unit. The power unit is located in the casing and includes a fixed shaft and a rotating seat. An armature coil group is provided outside the fixed shaft. A field magnet is provided on the rotating seat to correspond to the armature coil group. A cam profile and a rotating shaft are formed on the outer surface of the rotating seat. Roller contact. When the armature coil group is energized, the magnetic field generated by the armature coil group drives the rotation base through the field magnet, and the working curve design of the cam profile enables the rollers to be guided, which in turn drives the rotary shaft to rotate and drives the tool change. The arm rotates to perform the tool change operation.

Description

Automatic tool change system for machine tools

This creation is related to machine tools; in particular, it refers to an automatic tool change system for a machine tool.

According to the press, the automatic tool changing device of the machine tool includes a tool magazine and a tool changing system. The tools on the tool magazine are exchanged with the tools on the machine tool spindle through the tool changing arm of the tool changing system. The purpose is to improve work efficiency. .

Taiwan New Patent Publication No. M518604 "Induction Structure of Motor for Dedicated Automatic Tool Change Mechanism" discloses a common automatic tool change system, which includes a casing, a motor and a reduction mechanism are arranged on the top of the casing, and a roller is arranged inside the casing. A toothed cam mechanism and an output spindle. One end of the output spindle goes out of the casing and is connected with a tool changing arm. Among them, the motor first drives an input spindle through a reduction mechanism. One end of the input spindle is equipped with a bevel gear to drive a helical cam of a hobbing cam mechanism to rotate. The helical cam then rotates with a roller provided on the output spindle. The contact causes the output spindle to rotate with the tool changing arm.

It is true that the above known automatic tool change system can effectively perform the tool exchange action, but the motor and the reduction mechanism are exposed outside the housing, which consumes space; secondly, the internal transmission structure including the bevel gear and the hobbing cam mechanism also takes up more Space, the casing must be enlarged; moreover, the known automatic tool change system is designed to keep the transmission structure in the casing with good lubrication and transmission effect. Gear oil is installed in the casing, so it is maintained at a certain level. Measuring the amount of gear oil and ensuring that the gear oil does not escape are important issues in the production of the known automatic tool change system. For this reason, the structure of the known automatic tool change system adds inconvenience and trouble to maintenance and repair.

In view of this, the purpose of this creation is to provide an automatic tool change system for machine tools, which is convenient in maintenance and repair, and does not require the use of liquid gear oil.

In order to achieve the above-mentioned object, an automatic tool changing system of a machine tool provided by the author includes a casing, a rotating shaft, a tool changing arm and a power unit. The rotating shaft is rotatably passed through the casing, and one end is located outside the casing. The rotating shaft also has a driven part located in the casing; the blade changing arm is connected to the end of the rotating shaft outside the casing; power The unit is arranged in the casing and includes a fixed shaft and a rotating base, wherein at least one armature coil group is provided outside the fixed shaft, and the rotating base is combined with the fixed shaft in a manner rotatable relative to the fixed shaft. At least one field magnet is provided to correspond to the armature coil group, and the rotating base has a driving part, wherein when the rotating base rotates, the driving part drives the rotating shaft to rotate through the driven part.

In this creative embodiment, the rotating base is a hollow structure, and a fixed shaft passes through the rotating base and the two ends are respectively connected to the casing; wherein the field magnet is provided on the inner wall of the rotating base, and the active surface of the rotating base has the active part. unit.

In this creative embodiment, the driven portion of the rotating shaft includes a plurality of contact members disposed along the peripheral surface of the rotating shaft at intervals; the outer surface of the rotating base has a cam profile forming the driving portion, and the rotating base rotates. The cam is guided by the cam profile to rotate the rotating shaft.

In this creative embodiment, the power unit includes at least one bearing disposed between the rotating seat and the fixed shaft.

In this creative embodiment, the casing has a front surface and a bottom surface that intersect perpendicularly, the fixed shaft is disposed perpendicular to the front surface, and the rotation shaft passes through the bottom surface vertically.

In the embodiment of the present invention, a lifting structure is included, which is linked with the rotary base to drive the rotating shaft to move up and down.

In this creative embodiment, the lifting structure includes a rocker arm and a rocker arm action groove formed on the rotary base. One end of the rocker arm is pivotally connected to the casing, and the other end is connected to the rotary shaft without interfering with the rotation of the shaft. A follower is arranged on the rotating shaft and the rocker arm, and the follower is located in the action groove of the rocker arm.

The effect of this creation is that the power unit is set in the casing and directly rotates the shaft connected to the tool changing arm, which can save the setting of a reduction mechanism, and does not need to use liquid gear oil. It can improve the known structure to leak oil and harm the environment. The problem.

In order to explain this creation more clearly, a preferred embodiment is described in detail below with reference to the drawings. Please refer to FIG. 1 and FIG. 2, a tool changer automatic tool changing system 100 of a preferred embodiment of the present invention is used in conjunction with a tool magazine. The automatic tool changing system 100 includes a casing 10, a rotating shaft 20, a tool changing arm 30, a power unit 40, and a lifting structure 50.

The casing 10 has a front surface 10 a and a bottom surface 10 b which intersect perpendicularly.

The rotating shaft 20 is rotatably disposed in the casing 10, and one end of the rotating shaft 20 penetrates the bottom surface 10 b vertically and is located outside the casing 10. The rotary shaft 20 also has a plurality of followers formed by a plurality of contacts, such as but not limited to rollers 22. The rollers 22 are located in the housing 10 and are spaced along the peripheral surface of the rotary shaft 20 Settings. Preferably, the roller 22 can be coupled to the rotating shaft 20 by being arranged on a turret.

The tool changing arm 30 is connected to an end of the rotating shaft 20 located outside the casing 10, and the tool changing arm 30 is rotated by the rotating shaft 20.

The power unit 40 is disposed in the casing 10 and includes a rotating base 42, a fixed shaft 44, at least one armature coil group 46, and at least one field magnet 48. Wherein, the rotating seat 42 is a hollow structure, and its outer peripheral surface has a driving part formed by a cam profile 42a, and the cam profile 42a is directly opposite to the roller 22; the fixed shaft 44 is perpendicular to the front face 10a of the casing 10. The penetrating manner passes through the rotating base 42, and two ends of the fixed shaft 44 are respectively connected to the casing 10 and are fixed. A bearing 49 is further provided between the rotating base 42 and the fixed shaft 44, so that the rotating base 42 can smoothly rotate relative to the fixed shaft 44. In the foregoing, the active part is based on the cam profile 42a as an example, the purpose is to guide the roller 22 to drive the rotating shaft 20. However, in other embodiments, the active part is not limited to the cam profile, as long as it can guide one by one The roller 22 may be, for example, two spiral-shaped push-out ribs may be provided on the circumferential outer surface of the rotary seat. The roller 22 is located between the two push-out ribs, and the inclination of the push-out rib itself is The position of the guide roller 22 is changed.

The number of armature coil groups 46 and field magnets 48 of the power unit 40 in this embodiment is a plurality. The armature coil groups 46 are disposed outside the fixed shaft 44, and a magnetic field is generated when the armature coil groups 46 are energized. The field magnets 48 are permanent magnets, which are arranged at equal intervals on the inner wall of the rotating seat 42 and are located within the range of the magnetic field generated by the armature coil group 46.

The lifting structure 50 is linked with the rotating base 42 to drive the rotating shaft 20 to move up and down. In this embodiment, the lifting structure 50 includes a swing arm 52, a swing arm action groove 54 formed on one side of the rotation base 42, and a follower 56. One end of the rocker arm 52 is pivotally connected to the casing 10, and the other end is connected to the shaft 20 in a manner that does not interfere with the rotation of the shaft 20. The follower 56 is provided on the rocker 52, and the follower 56 It is located in the rocker motion groove 54. The follower 56 of this embodiment uses rollers as an example, and the swing arm action groove 54 is a closed recess, so that the rotating rotary base 42 can drive the swing arm 52 to swing to drive the shaft 20 to move up and down.

The above is a description of the composition of the automatic tool change system 100 according to the preferred embodiment of the present invention. The user generates a magnetic field by energizing the armature coil group 46, and the rotation of the rotary base 42 can be driven by the arrangement of the field magnet 48. When the rotary base 42 rotates, the rotary base 42 can drive the rotary shaft 20 through the swing arm 52 Moving up and down, the cam profile 42a on the outer surface of the rotating seat 42 can guide the roller 22, and the design of the working curve of the cam profile 42a enables the roller 22 to be guided one by one, and then drives the rotating shaft 20 to rotate, and then The tool changing arm 30 is driven to rotate to perform a tool changing operation.

The power unit 40 of the automatic tool change system 100 of this embodiment does not have a motor exposed outside the casing 10, so that the use of space is more flexible, and there is no need to set a reduction mechanism; secondly, the number of parts used in the internal transmission structure is reduced To avoid occupying too much space, the volume of the casing 10 can be reduced; further, there is no need to set liquid gear oil inside the casing 10, and only solid grease needs to be applied between the contact structures. Convenience, and no cleanup and environmental hazards caused by oil leakage.

In the above embodiment, the roller 22 may be directly fixed to the rotating shaft 20, or the purpose of fixing the roller 22 to the rotating shaft 20 may be achieved by first combining the roller 22 with a rotating tower and then fixing the rotating tower to the rotating shaft 20. In addition, the power unit 40 of this embodiment can achieve the purpose of controlling the rotation speed by controlling the magnitude of the voltage.

The above description is only the preferred and feasible embodiment of this creation. For example, the equivalent changes of applying the description of this creation and the scope of patent application should be included in the scope of patent of this creation.

[This new model]
100‧‧‧Automatic tool change system
10‧‧‧chassis
10a‧‧‧front
10b‧‧‧ Underside
20‧‧‧ shaft
22‧‧‧Roller
30‧‧‧tool change arm
40‧‧‧ Power unit
42‧‧‧Rotary seat
42a‧‧‧cam profile
44‧‧‧ fixed shaft
46‧‧‧ Armature Coil Set
48‧‧‧field magnet
49‧‧‧bearing
50‧‧‧ Lifting structure
52‧‧‧ rocker
54‧‧‧ Rocker action groove
56‧‧‧ Follower

FIG. 1 is a front view of an automatic tool changing system of a machine tool according to a preferred embodiment of the present invention; FIG. 2 is a plan view of an automatic tool changing system of a machine tool according to the above-mentioned preferred embodiment of the present invention.

Claims (7)

An automatic tool changing system for a machine tool includes: a casing; a rotating shaft rotatably passing through the casing, and one end of the casing is located outside the casing; the rotating shaft has a driven portion located in the casing; The tool changing arm is connected to an end of the rotating shaft outside the casing; and a power unit is provided in the casing and includes a fixed shaft and a rotating seat; wherein at least one armature coil is provided outside the fixed shaft The rotary base is combined with the fixed shaft in a manner rotatable relative to the fixed shaft. At least one field magnet is provided on the rotary base to correspond to the armature coil group. The rotary base has an active part, and the rotary base rotates. At this time, the driving part drives the rotating shaft to rotate through the driven part. The automatic tool changing system for a machine tool as described in claim 1, wherein the rotary base is a hollow structure, the fixed shaft passes through the rotary base and the two ends are respectively connected to the housing; wherein the field magnet is provided with the field magnet The outer surface of the rotary base has the driving portion. The automatic tool changing system of the machine tool according to claim 2, wherein the driven part of the rotating shaft includes a plurality of contact pieces arranged along the peripheral surface of the rotating shaft at intervals; the outer surface of the rotating seat has a cam profile formed In the active part, the rotating base rotates the contact member according to the cam profile to rotate the rotating shaft. The automatic tool changing system for a machine tool according to claim 2, wherein the power unit includes at least one bearing disposed between the rotary base and the fixed shaft. The automatic tool changing system of the machine tool according to claim 1, wherein the casing has a front surface and a bottom surface that intersect perpendicularly, the fixed shaft is disposed perpendicular to the front surface, and the rotating shaft passes through the bottom surface vertically. The automatic tool changing system of the machine tool according to claim 1, comprising a lifting structure, which is linked with the rotary base to drive the rotary shaft to move up and down. The automatic tool changing system for a machine tool according to claim 6, wherein the lifting structure includes a swing arm and a swing arm action groove formed on the rotary base, one end of the swing arm is pivotally connected to the casing, and the other end is It is connected to the rotating shaft without interfering with the rotation of the rotating shaft, and a follower is arranged on the rocker arm, and the follower is located in the action groove of the rocker arm.