Deep hole machining on-line deviating correction device based on laser detection

Patent metadata

Field	Value
Publication number	US-9561547-B1
Application number	US-201514966480-A
Country	US
Kind code	B1
Filing date	Dec 11, 2015
Priority date	Nov 13, 2015
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

The disclosure relates to a technical field of deep hole machining, particularly to a deep hole machining on-line deviating correction device based on laser detection, which solves the prior art problem of difficulty in the real-time, on-line detection and deviating correction in the process of deep hole machining. The device comprises a deep hole cutter and a cutter bar, and arranged on the cutter bar are a laser orientating block, a pyramid prism seat, the deep hole cutter and a metallic block with a heating device arranged therein. A beam emitted by a laser transmitter is orientated by the laser orientating block so as to be incident in parallel with the axis of the cutter bar, and then through a pyramid prism to form a return beam which reaches the photosensitive sensor. The advantages of the disclosure lie in that skewing of the deep hole cutter can be detected in time and skewing correction of the deep hole tool is achieved based on the heat expansion and cold contraction mechanism, and therefore the straightness and position accuracy during deep hole machining are improved.

First claim

What is claimed is:

1. A deep hole machining on-line deviating correction device based on laser detection, comprising:
a deep hole cutter; and
a cutter bar, wherein the deep hole cutter is fixed to the cutter bar and one end of the cutter bar is fixed to a cutter bar support mounted on a slide plate which rests on a machine tool bed, wherein another end of the cutter bar extends into a bore of a core sleeve nested with a tapered expansion bushing which is positioned in a bore of a spindle of a spindle box and contacts with a wall of the bore, wherein one end of the expansion bushing contacts with an end face of a retaining nut which is connected to a threaded portion of the core sleeve, and located in the bore of the spindle, wherein a contact portion between the core sleeve and the tapered expansion bushing is in a form of one of a cone or cylinder when the spindle bore is configured as a tapered bore, and the contact portion is in a form of a cone when the spindle bore is configured as a cylindrical bore, wherein an expansion sleeve is provided with a slot, wherein the cutter bar is provided with a plurality of metallic blocks arranged uniformly in a circumferential direction adjacent to the deep hole cutter and each of the metallic blocks is provided with a heating device in an interior thereof and a wear/heat-resistant block on a top thereof, wherein the metallic block together with the wear/heat-resistant block form a radial profile dimension smaller than a diameter of a machined hole of a workpiece, wherein when the heating device is not heating up, the metallic block does not expand, and thus the wear/heat-resistant block on the top thereof makes no contact with an inner wall of the hole of the workpiece, and when the heating device is heating up, the metallic block expands, and thus the wear/heat-resistant block on the top thereof contacts with the inner wall of the hole of the workpiece, wherein the metallic blocks are located in a side of the machined hole, a pyramid prism seat is arranged between the metallic blocks and an end face of the machined hole, and a pyramid prism is mounted onto the pyramid prism seat, wherein a laser transmitter and a photosensitive sensor are mounted to an outer frame in a height corresponding to a height range of the pyramid prism, and the outer frame is fixed to the machine tool bed, wherein an incident beam emitted by the laser transmitter is orientated by a laser orientating block so as to be in parallel with an initial axis of the cutter bar, and then the incident beam travels through a gap between the cutter bar and the workpiece and then through the pyramid prism to form a return beam which travels backwardly through the gap between the cutter bar and the workpiece and reaches the photosensitive sensor which is connected to a computer.

2. The deep hole machining on-line deviating correction device based on laser detection according to claim 1 , wherein the laser orientating block is mounted on the cutter bar, and positioned between the pyramid prism seat and the laser transmitter, wherein the laser orientating block is provided with first light apertures and second light apertures, wherein the incident beam emitted by the laser transmitter travels forwardly through the first light apertures of the laser orientating block and then through the pyramid prism so as to travel backwardly in parallel with an incident direction through the second light apertures, wherein the returning laser beam is in parallel with the axis of the cutter bar, wherein the laser orientating block is used in the laser orientating adjustment, and is one of retained or removed, after the adjustment.

3. The deep hole machining on-line deviating correction device based on laser detection according to claim 1 , wherein the deep hole cutter is in a form of one a boring cutter, a reamer, a drill bit, or a honing tool.

4. The deep hole machining on-line deviating correction device based on laser detection according to claim 1 , wherein the wear/heat-resistant block is composed of cemented carbide.

5. The deep hole machining on-line deviating correction device based on laser detection according to claim 1 , wherein the heating device is in a form of one of an electrically resistive heating device, an electromagnetic heating device, or an infrared heating device.

6. The deep hole machining on-line deviating correction device based on laser detection according to claim 1 , wherein the plurality of metallic blocks comprise three or more metallic blocks.

Assignees

• Univ North China

Inventors

• Yu Daguo
• Shen Xingquan
• Li Yanlan
• Huang Xiaobin
• Wang Chuangmin
• Bo Xiaoming
• Quan Baoluo
• Dong Zhen

Classifications

• B23B2260/092

  Lasers · CPC title

• B23B29/027

  Steadies for boring bars (auxiliary devices, e.g. steadies, rests B23Q1/76) · CPC title

• B23B2260/128

  Sensors · CPC title

• G01S17/42

  Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46) · CPC title

• B23B41/02 Primary

  for boring deep holes; Trepanning, e.g. of gun or rifle barrels · CPC title