IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0098104
(2013-12-05)
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등록번호 |
US-9334936
(2016-05-10)
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발명자
/ 주소 |
- Rosengren, Gary W.
- Bourgoine, Ryan H.
- Forbord, Jeremy R.
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
16 |
초록
▼
An apparatus comprises an actuator having a motor, a housing and a thrust rod, where the actuator is configured to convert rotational motion of the motor into axial motion of the thrust rod. A movable holder is coupled to the thrust rod, and configured for axial motion of a tool coupling therewith.
An apparatus comprises an actuator having a motor, a housing and a thrust rod, where the actuator is configured to convert rotational motion of the motor into axial motion of the thrust rod. A movable holder is coupled to the thrust rod, and configured for axial motion of a tool coupling therewith. A bearing assembly is coupled to the actuator, extending along an axis thereof. The bearing assembly is configured to engage with the bearing to provide positional stability for the movable holder and tool coupling, when positioned along the actuator axis by motion of the thrust rod.
대표청구항
▼
1. An apparatus comprising: an actuator comprising a motor, a housing and a thrust rod, the actuator configured to convert rotational motion of the motor into axial motion of the thrust rod;a movable holder coupled to the thrust rod and configured for axial motion therewith, the movable holder compr
1. An apparatus comprising: an actuator comprising a motor, a housing and a thrust rod, the actuator configured to convert rotational motion of the motor into axial motion of the thrust rod;a movable holder coupled to the thrust rod and configured for axial motion therewith, the movable holder comprising a tool coupling;a bearing coupled to the movable holder; andan external bearing assembly coupled to the actuator at a distal end of the housing and extending along an axis therefrom, the bearing assembly configured to engage with the bearing to provide positional stability for the movable holder and tool coupling along the actuator axis;wherein the bearing assembly comprises two side plates in sliding engagement with opposing edges of the bearing and the movable holder is spaced between the side plates. 2. The apparatus of claim 1, wherein the bearing assembly comprises a top plate in sliding engagement with a major surface of the bearing, the major surface of the bearing disposed in the sliding engagement with an underside of the top plate. 3. The apparatus of claim 2, wherein the bearing has a substantially solid configuration. 4. The apparatus of claim 2, further comprising a bearing strip disposed between the bearing assembly and the bearing coupled to the movable holder, the bearing strip configured for bearing engagement with a corresponding surface of the bearing. 5. The apparatus of claim 2, further comprising at least one of a rail or groove extending axially along an inner surface of the side plates, the opposing edges of the bearing in sliding engagement with the rail or groove. 6. The apparatus of claim 1, further comprising an insulating member disposed between the bearing and the movable holder, wherein the bearing is electrically isolated from the movable holder and tool coupling. 7. The apparatus of claim 6, further comprising an insulating bushing disposed between the thrust rod and the movable holder, wherein the actuator is electrically isolated from the movable holder and tool coupling. 8. The apparatus of claim 7, further comprising a welding electrode attached to the tool coupling and an expulsion shield to discourage entry of welding expulsion and other debris between the movable holder and the side plates. 9. The apparatus of claim 1, wherein the thrust rod comprises a radially outer member compressively coupled to a radially inner member, the radially outer member providing a compressive loading on the radially inner member and the radially inner member having a higher elastic modulus than the radially outer member. 10. The apparatus of claim 9, wherein the radially inner member comprises a heavy metal selected from the group of chromium, tungsten and molybdenum, or an alloy thereof. 11. An actuator system comprising: a motor disposed within a motor housing and a thrust rod extending along an axis from the motor housing, wherein the motor is configured to position the thrust rod along the axis;a movable holder coupled to the thrust rod;a bearing member coupled to the movable holder; andan external bearing assembly coupled to a distal end of the housing and extending along the axis therefrom in bearing engagement with the bearing member, the bearing assembly configured for positional stability of the movable holder in motion with the thrust tube along the axis;wherein the bearing assembly comprises a pair of opposing side plates extending along the axis and engaged in a sliding relationship with opposing edges of the bearing member, the movable holder disposed along the axis and spaced between the side plates. 12. The actuator system of claim 11, wherein the bearing assembly comprises a top plate spanning the axis across the side plates, the bearing member disposed with a major surface in sliding engagement with an underside of the top plate. 13. The actuator system of claim 11, further comprising a bearing strip extending along each of the side plates, the bearing strip disposed in bearing relationship with the opposing edges of the bearing member. 14. The actuator system of claim 11, wherein the movable holder is electrically insulated from the motor housing and bearing assembly. 15. The actuator system of claim 14, further comprising a welding electrode coupled to the movable holder and an expulsion shield to discourage entry of welding expulsion and other debris between the movable holder and the side plates. 16. The actuator system of claim 11, wherein the bearing member comprises a substantially solid bearing having a major surface in sliding engagement with the bearing assembly. 17. The actuator system of claim 16, further comprising a coupling member attached to a distal end of the movable holder opposite the thrust rod, the coupling member configured to attach a machine tool component. 18. The actuator system of claim 17, further comprising an insulating member disposed between the bearing member and the movable holder, wherein the insulating member is configured to electrically isolate the bearing assembly from the machine tool component. 19. A linear actuator system comprising: an actuator comprising a motor, a housing and a thrust rod, the actuator configured to convert rotational motion of the motor into axial motion of the thrust rod;wherein the thrust rod comprises a radially outer member compressively coupled to a radially inner member, the radially outer member providing a compressive loading on the radially inner member and the radially inner member having a higher elastic modulus than the radially outer member;a movable holder coupled to the thrust rod and configured for axial motion therewith, the movable holder comprising a tool coupling;a bearing coupled to the movable holder; andan external bearing assembly coupled to the actuator at a distal end of the housing and extending along an axis therefrom, the bearing assembly configured to engage with the bearing to provide positional stability for the movable holder and tool coupling along the actuator axis;wherein the bearing assembly comprises two side plates in sliding engagement with opposing edges of the bearing, the movable holder spaced between the side plates, and a top plate in sliding engagement with a major surface of the bearing, the major surface of the bearing disposed in the sliding engagement with an underside of the top plate. 20. The linear actuator system of claim 19, further comprising a welding electrode attached to the tool coupling and an expulsion shield to discourage entry of welding expulsion and other debris between the movable holder and the side plates. 21. The linear actuator system of claim 19, further comprising an insulating member disposed between the bearing and the movable holder, wherein the bearing is electrically isolated from the movable holder and tool coupling.
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