Machine tool spindle structure capable of monitoring working state in real time

• US 7,883,303 B2
• Filed: 01/13/2009
• Issued: 02/08/2011
• Est. Priority Date: 12/05/2008
• Status: Expired due to Fees

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Tang, Kuo-Yu, Kuo, Tzu-Hsin, Huang, Chun-Hung
• Primary Examiner(s): Cadugan; Erica E
• Application Number:
  US12/352,635
• Publication Number:
  US 20100145496A1
• Time in Patent Office: 756 Days
• Field of Search: 409/230, 409/144, 409/147, 409/148, 409/186, 409/187, 409193-194, 409/207, 409/208, 409/214, 409/232, 409/234, 409/231, 408/8, 408/9, 408/10, 408/11, 408/16
• US Class Current: 409/232
• CPC Class Codes: B23Q 17/00 Arrangements for observing, indicating or measuring on machine tools for automatic control or regulation of feed movement, cutting velocity or position of tool or work B23Q15/00
• CPC Class Codes: B23Q 17/0971 by measuring mechanical vibrations of parts of the machine arrangements for measuring vibrations B23Q17/12
• CPC Class Codes: B23Q 17/0985 by measuring temperature
• CPC Class Codes: Y10T 408/16 with control means energized in response to activator stimulated by condition sensor
• CPC Class Codes: Y10T 409/30728 In response to cutter condition
• CPC Class Codes: Y10T 409/309408 with cutter holder

Abstract

A machine tool spindle structure capable of monitoring a working state in real time includes a spindle body, a rotating mandrel, a cutter base, and an internal inspecting device. The cutter base is combined with the rotating mandrel and rotates with the rotating mandrel. The rotating mandrel has a chamber, and the internal inspecting device is disposed in the chamber. Inspecting chips in the internal inspecting device are directly disposed on the cutter base, so as to measure working parameters during a processing process. The working parameters are transmitted to an external information device by a wireless transmission module in the internal inspecting device, thereby accurately giving a feedback of the working state of a processing cutter in real time.

Claims

1. A machine tool spindle structure capable of monitoring a working state in real time, comprising:

a spindle body, having a chamber;

a cutter base, combined with the spindle body; and

an internal inspecting device, disposed in the chamber, and comprising a control substrate and an inspecting substrate, wherein the control substrate is disposed on the spindle body, the inspecting substrate is disposed on the cutter base, and the control substrate is electrically connected to the inspecting substrate through a transmission cable.

2. The machine tool spindle structure capable of monitoring a working state in real time according to claim 1, wherein a plurality of screw holes is disposed on the spindle body, a plurality of perforations corresponding to the screw holes is disposed on the cutter base, a plurality of screws passes through the perforations and is screwed in the screw holes, such that the cutter base is combined with the spindle body.

3. The machine tool spindle structure capable of monitoring a working state in real time according to claim 1, wherein the control substrate at least comprises a microprocessor, a wireless transmission module, a signal connector, and a battery.

4. The machine tool spindle structure capable of monitoring a working state in real time according to claim 3, wherein the control substrate is disposed on an end face of a rotating mandrel of the spindle body and is disposed in the chamber.

5. The machine tool spindle structure capable of monitoring a working state in real time according to claim 3, wherein the microprocessor is responsible for all signal processing and commands of the internal inspecting device.

6. The machine tool spindle structure capable of monitoring a working state in real time according to claim 3, wherein the wireless transmission module performs a wireless signal transmission by using a wireless radio frequency (RF) transmission technology or a Bluetooth wireless transmission technology.

7. The machine tool spindle structure capable of monitoring a working state in real time according to claim 3, wherein the battery is a nickel-hydrogen battery, a lithium ion battery, or other rechargeable secondary batteries, for supplying electric power required by all electronic parts of the internal inspecting device.

8. The machine tool spindle structure capable of monitoring a working state in real time according to claim 3, wherein the battery is a fuel cell, for supplying electric power required by all electronic parts of the internal inspecting device.

9. The machine tool spindle structure capable of monitoring a working state in real time according to claim 1, wherein the inspecting substrate is disposed on a combining face of the cutter base.

10. The machine tool spindle structure capable of monitoring a working state in real time according to claim 9, wherein the inspecting substrate is disposed on a rotating center of the cutter base.

11. The machine tool spindle structure capable of monitoring a working state in real time according to claim 10, wherein the inspecting substrate at least comprises a plurality of inspecting chips and a signal connector.

12. The machine tool spindle structure capable of monitoring a working state in real time according to claim 11, wherein one of the plurality of inspecting chips is an accelerometer.

13. The machine tool spindle structure capable of monitoring a working state in real time according to claim 12, wherein the accelerometer is disposed on the rotating center of the cutter base.

14. The machine tool spindle structure capable of monitoring a working state in real time according to claim 11, wherein one of the plurality of inspecting chips is a thermometer.

15. The machine tool spindle structure capable of monitoring a working state in real time according to claim 14, wherein the thermometer is directly attached on and contacts with the combining face of the cutter base.

16. The machine tool spindle structure capable of monitoring a working state in real time according to claim 11, wherein one of the plurality of inspecting chips is a strain gauge.

17. The machine tool spindle structure capable of monitoring a working state in real time according to claim 16, wherein the strain gauge is away from the rotating center of the cutter base at a distance.

18. The machine tool spindle structure capable of monitoring a working state in real time according to claim 11, wherein each working parameter measured by each of the inspecting chips is delivered to the control substrate through the transmission cable, the control substrate externally delivers the working parameters to an external information device, and the external information device receives the working parameters, and displays and analyzes data.

19. The machine tool spindle structure capable of monitoring a working state in real time according to claim 18, wherein each of the working parameters directly gives a feedback of the working state of a processing cutter disposed on the cutter base.

20. The machine tool spindle structure capable of monitoring a working state in real time according to claim 19, wherein the processing cutter is adjusted according to the feedback of the working state of the processing cutter.