CN201579419U - Magnetic encoder for spindle of machine tool - Google Patents
Magnetic encoder for spindle of machine tool Download PDFInfo
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- CN201579419U CN201579419U CN2009202459308U CN200920245930U CN201579419U CN 201579419 U CN201579419 U CN 201579419U CN 2009202459308 U CN2009202459308 U CN 2009202459308U CN 200920245930 U CN200920245930 U CN 200920245930U CN 201579419 U CN201579419 U CN 201579419U
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- chief axis
- ring
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Abstract
The utility model discloses a magnetic encoder for a spindle of a machine tool. The magnetic encoder comprises a magnetic wheel and a magnetic induction read head, wherein the magnetic wheel is sleeved on the spindle of the machine tool and can rotate synchronously with the spindle of the machine tool; the magnetic induction read head is used with the magnetic wheel; the magnetic wheel comprises a multi-pole magnetic ring and a protective hood; multi-pole magnetizing magnetic drums are uniformly arranged on the multi-pole magnetic ring in the peripheral direction; the multi-pole magnetic ring forms a magnetic field with periodic intensity variation; the protective hood is buckled outside the multi-pole magnetic ring; the magnetic induction read head comprises an external casing and a circuit board arranged in the external casing; a Hall detection element, a signal conditioning circuit and an interface circuit are arranged on the circuit board; the Hall detection element can detect the intensity variation of the magnetic field of the multi-pole magnetic ring in a real time manner; the signal conditioning circuit is connected with the Hall detection element; and the interface circuit is connected with the signal conditioning circuit. The magnetic encoder has the advantages of simple structure, small volume, light weight, high anti-impact capacity and environmental suitability and reliable operation performance, and can not only lower cost and reduce complex mechanical transmission mechanism, but also greatly improve the measurement accuracy and prolong the service life.
Description
Technical field
The utility model relates to a kind of machine tool chief axis encoder, especially relates to a kind of machine tool chief axis magnetic encoder.
Background technology
Nowadays, machine tool chief axis encoder commonly used on the market mainly contains several types such as photoelectric encoder, laser encoder, semiconductor encoder and optical fiber code device, and what wherein be most widely used is the photoelectricity incremental encoder.
Photoelectric encoder is a core component with high-precision measuring circle grating, and light harvesting electromechanics is one, by opto-electronic conversion, converts the mechanical quantity of importing to digital quantity.It can realize automatic measurement, the digital measurement and digital control of machine and instrument, and volume is little, in light weight, but there is not inherent shortcoming such as easy care in it.Photoelectric encoder mainly is made up of several parts such as axle system, sound grating, light-emitting component and photoelectric apparatus.Its operation principle is, the moving grating that is connected with main shaft rotates with main shaft, form Morie fringe with quiet overlap of grating, pass through opto-electronic conversion, output and corner be the photoelectric displacement signal one to one, handle through subsequent conditioning circuits such as amplification, shapings, just can realize the control and the measurement of displacement, angle.
And when photoelectric encoder used on machine tool chief axis, it can not directly be connected with main shaft, was connected indirectly with lathe spindle with mechanical transmission mechanisms such as synchronizing wheel, belts usually.To sum up, because inevitably there is above-mentioned inherent defect in photoelectric encoder, and must be connected indirectly with machine tool chief axis by mechanical transmission mechanism, thereby there are following defective and deficiency in the actual use: 1, the connectivity problem of mechanical transmission structure is difficult for solving: mechanical transmission structure that is adopted and transmission process thereof are that machine tool chief axis drives the synchronizing wheel rotation, synchronizing wheel drives belt movement, belt drives the photoelectric encoder main axis rotation, thereby whole mechanical transmission structure more complicated, go wrong easily, wherein modal problem is that belt decentraction and the axis system that causes photoelectric encoder damage.2, the mechanical transmission structure assembling trouble that is adopted and not easy to operate.3, in the practical application, photoelectric encoder is given a shock easily, the factor affecting such as life-span of light source, makes the long-term reliability of its performance have a greatly reduced quality.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of machine tool chief axis magnetic encoder is provided, it is simple in structure, volume is little, in light weight and impact resistance and environmental suitability is strong, reliable working performance, when reducing cost, reducing the complicated machinery transmission mechanism, also significantly improve certainty of measurement, prolonged service life.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of machine tool chief axis magnetic encoder, it is characterized in that: comprise magnet pulley that is sleeved on the machine tool chief axis and rotates synchronously with the lathe main shaft and the magnetic induction read head that is used with magnet pulley, described magnetic induction read head is positioned at top, the magnet pulley outside; Described magnet pulley comprises multi-pole magnet-ring and the guard shield of spiral-lock outside multi-pole magnet-ring that along the circumferential direction evenly is laid with multipole magnetization magnetic drum and the strong and weak variation magnetic field of corresponding formation periodicity; Described magnetic induction read head comprises external shell and is laid in the circuit board of described external shell inside, and described circuit board is provided with hall detection component that the change of magnetic field strength situation on the multi-pole magnet-ring is detected in real time, the signal conditioning circuit that joins with hall detection component and the interface circuit that joins with signal conditioning circuit.
Described hall detection component and multi-pole magnet-ring are positioned on the same horizontal plane.
Be connected in the riveted joint mode between described multi-pole magnet-ring and guard shield.
Described external shell comprises lower cover and the spiral-lock loam cake directly over lower cover.
Described circuit board is installed in loam cake inside and its outside is set with the metal water joint.
Connect by screw between described lower cover and the loam cake and the lower cover arranged outside has the wool brush of fixing by jackscrew.
Described hall detection component is an AS5304 high-performance linear hall sensor integrated circuit.
The utility model compared with prior art has the following advantages:
1, simple in structure, volume is little, in light weight and strong shock resistance, stable work in work simultaneously, reliability height.
2, applied widely and environmental adaptability good, have stronger adverse circumstances resistivity, be not afraid of oil, dust, can effectively use big local of variations in temperature.
3, accuracy of detection is high and can carry out high-speed response, magnet pulley can directly be sleeved on the detected machine tool chief axis and can carry out the high speed rotation together with the lathe main shaft, thereby need not to re-use mechanical transmission mechanism and connect indirectly, when significantly saving cost, also can improve the accuracy of detection of encoder greatly.
4, measuring circuit precision height adopts advanced AS5304 single-chip measuring circuit (being AS5304 high-performance linear hall sensor integrated circuit) to measure, and can realize high accuracy, high reliability measurement.
5, long service life, because the utility model need not to use mechanical transmission mechanism and light emitting diode, thereby long service life.
6, install to lay convenient and use easy and simple to handle, the contactless magnetic inductive metering system of employing between rotary body (being magnet pulley) and the reading device (being the magnetic induction read head), thereby easy for installation and need not to consider mechanical installation accuracy problem, time saving and energy saving.
In sum, the utility model is simple in structure, volume is little, in light weight and impact resistance and environmental suitability is strong, reliable working performance, when reducing cost, reducing the complicated machinery transmission mechanism, also significantly improved certainty of measurement, prolonged service life.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a left view of the present utility model.
Fig. 3 is a schematic block circuit diagram of the present utility model.
Description of reference numerals:
The 1-magnet pulley; The 1-1-multi-pole magnet-ring; The 1-2-magnetic drum that magnetizes;
The 1-3-guard shield; 2-magnetic induction read head; The 2-1-hall detection component;
The 2-2-signal conditioning circuit; The 2-3-lower cover; The 2-4-loam cake;
The 2-5-jackscrew; The 2-6-interface circuit; 2-7-metal water joint.
The specific embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the utility model comprises magnet pulley 1 that is sleeved on the machine tool chief axis and rotates synchronously with the lathe main shaft and the magnetic induction read head 2 that is used with magnet pulley 1, and described magnetic induction read head 2 is positioned at top, magnet pulley 1 outside.Described magnet pulley 1 comprises and along the circumferential direction evenly is laid with multipole magnetization magnetic drum 1-2 and the corresponding multi-pole magnet-ring 1-1 that forms strong and weak variation magnetic field periodically and the spiral-lock guard shield 1-3 in the multi-pole magnet-ring 1-1 outside, and multipole magnetization magnetic drum 1-2 is divided into multi-pole magnet-ring 1-1 with certain distance between two poles and has the periodically magnet ring of strong and weak variation magnetic field along circumference.Described magnetic induction read head 2 comprises external shell and is laid in the circuit board of described external shell inside, and described circuit board is provided with hall detection component 2-1 that the change of magnetic field strength situation on the multi-pole magnet-ring 1-1 detects in real time, the signal conditioning circuit 2-2 that joins with hall detection component 2-1 and the interface circuit 2-6 that joins with signal conditioning circuit 2-2.
In the present embodiment, described hall detection component 2-1 is AS 5304 high-performance linear hall sensor integrated circuits.Described hall detection component 2-1 and multi-pole magnet-ring 1-1 are positioned on the same horizontal plane.That is to say that multi-pole magnet-ring 1-1 is positioned at directly over the magnet pulley 1.Be connected in the riveted joint mode between described multi-pole magnet-ring 1-1 and guard shield 1-3.Described external shell comprises lower cover 2-3 and the spiral-lock loam cake 2-4 directly over lower cover 2-3.Described circuit board is installed in loam cake 2-4 inside and its outside is set with metal water joint 2-7.Connect by screw between described lower cover 2-3 and the loam cake 2-4 and lower cover 2-3 arranged outside has the wool brush of fixing by jackscrew 2-5.
The course of work of the present utility model is: described magnet pulley 1 (comprising multi-pole magnet-ring 1-1) rotates synchronously with the lathe main shaft, and when multi-pole magnet-ring 1-1 rotates, hall detection component 2-1 is as sensing element, respond to change of magnetic field strength situation on the multi-pole magnet-ring 1-1 in the noncontact mode, and the signal of being sensed changed into deliver to signal conditioning circuit 2-2 after the data signal and handle, be the TTL rectangular pulse signal of standard with above-mentioned Digital Signal Processing and the standard TTL rectangular pulse signal that processing obtains delivered to interface circuit 2-6 output through signal conditioning circuit 2-2.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (7)
1. machine tool chief axis magnetic encoder, it is characterized in that: comprise magnet pulley (1) that is sleeved on the machine tool chief axis and rotates synchronously with the lathe main shaft and the magnetic induction read head (2) that is used with magnet pulley (1), described magnetic induction read head (2) is positioned at top, magnet pulley (1) outside; Described magnet pulley (1) comprises multipole magnetic (1-1) and the guard shield (1-3) of spiral-lock outside multi-pole magnet-ring (1-1) that along the circumferential direction evenly is laid with multipole magnetization magnetic drum (1-2) and the strong and weak variation magnetic field of corresponding formation periodicity; Described magnetic induction read head (2) comprises external shell and is laid in the circuit board of described external shell inside, and described circuit board is provided with hall detection component (2-1) that the change of magnetic field strength situation on the multi-pole magnet-ring (1-1) is detected in real time, the signal conditioning circuit (2-2) that joins with hall detection component (2-1) and the interface circuit (2-6) that joins with signal conditioning circuit (2-2).
2. according to the described machine tool chief axis magnetic encoder of claim 1, it is characterized in that: described hall detection component (2-1) is positioned on the same horizontal plane with multi-pole magnet-ring (1-1).
3. according to claim 1 or 2 described machine tool chief axis magnetic encoders, it is characterized in that: be connected in the riveted joint mode between described multi-pole magnet-ring (1-1) and guard shield (1-3).
4. according to claim 1 or 2 described machine tool chief axis magnetic encoders, it is characterized in that: described external shell comprises lower cover (2-3) and the spiral-lock loam cake (2-4) directly over lower cover (2-3).
5. according to the described machine tool chief axis magnetic encoder of claim 4, it is characterized in that: described circuit board is installed in loam cake (2-4) inside and its outside is set with metal water joint (2-7).
6. according to the described machine tool chief axis magnetic encoder of claim 4, it is characterized in that: connect by screw between described lower cover (2-3) and the loam cake (2-4) and lower cover (2-3) arranged outside has the wool brush of fixing by jackscrew (2-5).
7. according to claim 1 or 2 described machine tool chief axis magnetic encoders, it is characterized in that: described hall detection component (2-1) is an AS5304 high-performance linear hall sensor integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459308U CN201579419U (en) | 2009-12-22 | 2009-12-22 | Magnetic encoder for spindle of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459308U CN201579419U (en) | 2009-12-22 | 2009-12-22 | Magnetic encoder for spindle of machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN201579419U true CN201579419U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202459308U Expired - Fee Related CN201579419U (en) | 2009-12-22 | 2009-12-22 | Magnetic encoder for spindle of machine tool |
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| CN (1) | CN201579419U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538835A (en) * | 2010-12-20 | 2012-07-04 | 长春荣德光学有限公司 | Non-contact annular magnetoelectric rotary encoder |
| CN106767956A (en) * | 2017-02-27 | 2017-05-31 | 张道勇 | High speed and super precision machine tool chief axis magnetic induction absolute value encoder and its measurement gear |
| CN107127362A (en) * | 2017-06-19 | 2017-09-05 | 宁波友智机械科技有限公司 | A kind of lathe process sync detection device |
| CN107621273A (en) * | 2017-10-30 | 2018-01-23 | 江西凯润达精密仪器有限公司 | Waterproof magnetic grating ring module |
| CN111541142A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Method and device for synthesizing pulse laser beam |
-
2009
- 2009-12-22 CN CN2009202459308U patent/CN201579419U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538835A (en) * | 2010-12-20 | 2012-07-04 | 长春荣德光学有限公司 | Non-contact annular magnetoelectric rotary encoder |
| CN106767956A (en) * | 2017-02-27 | 2017-05-31 | 张道勇 | High speed and super precision machine tool chief axis magnetic induction absolute value encoder and its measurement gear |
| CN106767956B (en) * | 2017-02-27 | 2023-03-24 | 张道勇 | Magnetic induction absolute value encoder of high-speed high-precision machine tool spindle and measuring gear thereof |
| CN107127362A (en) * | 2017-06-19 | 2017-09-05 | 宁波友智机械科技有限公司 | A kind of lathe process sync detection device |
| CN107127362B (en) * | 2017-06-19 | 2019-07-02 | 宁波友智机械科技有限公司 | A kind of lathe process sync detection device |
| CN107621273A (en) * | 2017-10-30 | 2018-01-23 | 江西凯润达精密仪器有限公司 | Waterproof magnetic grating ring module |
| CN111541142A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Method and device for synthesizing pulse laser beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20141222 |
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| EXPY | Termination of patent right or utility model |