CN215719912U - Sawing machine oil cylinder with built-in displacement sensor - Google Patents
Sawing machine oil cylinder with built-in displacement sensor Download PDFInfo
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- CN215719912U CN215719912U CN202121579332.1U CN202121579332U CN215719912U CN 215719912 U CN215719912 U CN 215719912U CN 202121579332 U CN202121579332 U CN 202121579332U CN 215719912 U CN215719912 U CN 215719912U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 44
- 239000010721 machine oil Substances 0.000 title abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 36
- 230000006698 induction Effects 0.000 claims abstract description 16
- 230000001939 inductive effect Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 26
- 230000005291 magnetic effect Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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Abstract
The utility model provides a sawing machine oil cylinder with a built-in displacement sensor. A sawing machine cylinder with a built-in displacement sensor, comprising: the pull wire is sequentially wound on the rotating shaft and the winding shaft, and the end parts of two ends of the pull wire are respectively connected with the measured object and the winding shaft; the winding shaft is wound with a pull wire in a multi-coil surrounding mode, fixes the end part of the pull wire and tensions the pull wire; the rotating shaft is wound with a pull wire in a single-ring surrounding mode, rotates under the pulling action of the pull wire and outputs a signal proportional to the displacement of the pull wire; the inductive encoder is used for measuring an output signal of the rotating shaft to obtain the displacement of the measured object; a housing for accommodating the bobbin, the rotary shaft and the induction encoder; the end part of the cylinder barrel is connected with the shell; the piston rod is arranged in the cylinder barrel, and the end part of the piston rod is connected with the pull wire. The utility model avoids the problem of multilayer superposition possibly generated in the process of repeated linear displacement of the stay wire, eliminates the measurement error and realizes the accurate measurement without error and the feeding positioning of the sawing machine.
Description
Technical Field
The utility model relates to a sawing machine oil cylinder, in particular to a sawing machine oil cylinder with a built-in displacement sensor.
Background
The majority of the positioning in the current numerical control machine tool adopts a positioning mode of adding a magnetic grid ruler or a grating ruler to an oil cylinder, wherein the magnetic grid ruler or the grating ruler adopts a mode of externally arranging the magnetic grid ruler or the grating ruler on the oil cylinder. Because the operating environment of the machine tool is generally poor, the conditions of moisture, much dust and much scrap iron exist, and the failure rate of the externally-arranged magnetic grating ruler or grating ruler is very high. In addition, the externally-mounted magnetic grating ruler or grating ruler is also very easy to cause failure or inaccurate positioning of the positioning sensor caused by external collision, and finally causes generation of defective products in batches.
The pull-wire type displacement sensor can be used for positioning in a mode that the sensor is arranged in an oil cylinder, but the pull-wire type displacement sensor in the prior art is mostly of a single structure, all parts are generally arranged in the same space in a shell, oil parts and oil-free parts cannot be completely isolated, and the working precision of all parts is influenced; in addition, in the prior art, the stay wire is wound on a winding wheel in a multi-ring mode, and the condition that the stay wire is not superposed on the winding wheel according to a set mode in the displacement process exists, so that the linear proportional relation between the stay wire displacement and the angle change value is changed, the measurement failure rate is increased, and the positioning stability is influenced; the encoder in the prior art has poor precision and also influences the measurement precision to a certain extent.
The utility model discloses a chinese utility model patent of application number 201020298707.2 discloses a stay-supported linear displacement sensor, the better solution of the anti-S type clockwork spring of adopting the special design wire rope that acts as go-between superposes on the reel, and restraint mechanisms such as adoption uide bushing, uide bushing seat have solved the stay-supported lead-out gap great, act as go-between the problem that easily takes place the skew. However, in order to solve the above problems, more parts are added, the structure is complicated, the manufacturing and installation difficulty is increased, and the large-scale application is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sawing machine oil cylinder with a built-in displacement sensor, which can realize more accurate feeding and positioning of a sawing machine and solve the problems in the background technology.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a sawing machine cylinder with a built-in displacement sensor, comprising:
the pull wire is sequentially wound on the rotating shaft and the winding shaft, and the end parts of two ends of the pull wire are respectively connected with the measured object and the winding shaft;
the winding shaft is wound with a pull wire in a multi-coil surrounding mode, fixes the end part of the pull wire and tensions the pull wire;
the rotating shaft is wound with a pull wire in a single-ring surrounding mode, rotates under the pulling action of the pull wire and outputs a signal proportional to the displacement of the pull wire;
the inductive encoder is used for measuring an output signal of the rotating shaft to obtain the displacement of the measured object;
a housing for accommodating the bobbin, the rotary shaft and the induction encoder;
the end part of the cylinder barrel is connected with the shell;
the piston rod is arranged in the cylinder barrel, and the end part of the piston rod is connected with the pull wire.
Preferably, a winding shaft cavity for containing the winding shaft, a rotating shaft cavity for containing the rotating shaft, a first oil cavity for storing oil, a second oil cavity for storing the oil and a cavity for containing the induction type encoder are arranged in the shell, the winding shaft is positioned in the first oil cavity around the position where the stay wire is arranged, and the rotating shaft is positioned in the second oil cavity around the position where the stay wire is arranged.
Preferably, the winding shaft cavity is communicated with the first oil cavity, the cavity and the second oil cavity are respectively communicated with the rotating shaft cavity, and a sealing ring for separating the sealing cavity from the second oil cavity is arranged between the rotating shaft cavity and the rotating shaft.
Preferably, the spool includes the spool body, first bearing and elasticity piece that resets, and on the spool body was located to first bearing cover, the spool body was connected to elasticity piece that resets, and elasticity piece that resets is used for providing the spool body and circles round to the power of initial position in order to the tensioning act as go-between, the spool body is equipped with and is used for the first recess of establishing the act as go-between around.
Preferably, the rotation axis includes rotatory axis body, second bearing and strong magnet, and on the rotatory axis body was located to the second bearing cover, the rotatory axis body tip was located to the strong magnet, and induction type encoder sets up with the strong magnet is relative, rotatory axis body is equipped with and is used for around the second recess of establishing the acting as go-between.
Preferably, the inductive encoder is a magnetoelectric absolute value encoder.
Preferably, the pull wire is connected with the center of the end part of the piston rod, and the central axis of the piston rod, the pull wire, the part of the winding shaft wound with the pull wire and the part of the rotating shaft wound with the pull wire are positioned on the same plane.
The utility model has the beneficial effects that:
(1) the utility model only surrounds a circle of stay wire on the rotating shaft which has key influence on the measurement precision, thereby avoiding the problem of multilayer superposition possibly generated in the process of repeated linear displacement of the stay wire, always keeping the determined linear proportional relation between the angular rotary displacement of the rotating shaft and the linear displacement of the stay wire, eliminating the measurement error, and realizing the accurate measurement without error and the feeding positioning of the sawing machine;
(2) according to the utility model, the separation of an electric environment and a hydraulic environment is realized through the plurality of inner cavities arranged in the shell and the sealing rings between the inner cavities, so that each part of the built-in displacement sensor is positioned in a single cavity and is not influenced by moisture, dust and external impact, and the working environment of each part of the built-in displacement sensor is ensured;
(3) the utility model reduces the difficulty of equipment installation, reduces the dependence of the feeding precision of the sawing machine on people, and greatly improves the consistency and stability of the sawing machine equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the bobbin and the rotary shaft of the present invention;
fig. 3 is a schematic view of the internal structure of the housing of the present invention.
In the figure: 1. bracing wire, 2, spool, 3, rotation axis, 4, induction type encoder, 5, casing, 6, cylinder, 7, piston rod, 201, spool body, 202, first bearing, 203, elasticity piece that resets, 2011, first recess, 301, rotatory axis body, 302, second bearing, 303, strong magnet, 3011, second recess, 501, spool chamber, 502, rotation axis chamber, 503, first oil pocket, 504, second oil pocket, 505, cavity, 506, sealing washer.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the practice of the utility model is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the utility model.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.
Example 1:
a cylinder for a sawing machine with a built-in displacement sensor as shown in fig. 1, comprising: the pull wire 1 is sequentially wound on the rotating shaft 3 and the winding shaft 2, and the end parts of two ends of the pull wire are respectively connected with a measured object and the winding shaft 2; the winding shaft 2 is wound with the stay wire 1 in a multi-turn surrounding mode, fixes the end part of the stay wire 1 and tensions the stay wire 1; the rotating shaft 3 is wound with the stay wire 1 in a single-circle surrounding mode, rotates under the traction action of the stay wire 1 and outputs a signal proportional to the displacement of the stay wire 1; the inductive encoder 4 is used for measuring an output signal of the rotating shaft 3 to obtain the displacement of the measured object; a housing 5 for accommodating the bobbin 2, the rotary shaft 3 and the induction encoder 4; a cylinder barrel 6, the end part of which is connected with the shell 5; and a piston rod 7 arranged in the cylinder 6, wherein the end part of the piston rod 7 is connected with the pull wire 1.
Through above-mentioned technical scheme, spool 2 realizes the storage and the tip fixed function of 1 acting as go-between, and rotation axis 3 realizes converting the linear displacement of 1 acting as go-between into the angular rotation displacement of rotation axis 3, combines the measurement of induction type encoder 4 to the angular rotation, finally realizes the linear displacement of accurate measurement piston rod 7 at cylinder 6. The rotary shaft 3 which has key influence on the measurement precision is only surrounded by one circle of the stay wire 1, so that the problem of multilayer superposition possibly generated in the process of repeated linear displacement of the stay wire 1 is avoided, the determined linear proportional relation between the angular rotary displacement of the rotary shaft 3 and the linear displacement of the stay wire 1 is always kept, the measurement error is eliminated, and the accurate measurement without error and the feeding positioning of the sawing machine are realized.
Example 2:
the utility model provides a sawing machine hydro-cylinder with built-in displacement sensor, technical scheme is with embodiment 1, its difference lies in:
as shown in fig. 2, the spool 2 includes a spool body 201, a first bearing 202, and an elastic restoring member 203. The spool body 201 is a cylinder with a plurality of steps, the diameter of the step in the middle of the cylinder is larger than the diameter of other parts of the cylinder, and the step in the middle of the cylinder is provided with a first groove 2011 for winding the pull wire 1. The number of the first bearings 202 is two, the two first bearings are respectively sleeved at two ends of the bobbin 201, and the outer ring of the first bearing 202 is fixedly connected with the housing 5. The elastic restoring member 203 is connected to the spool body 201, and the elastic restoring member 203 is used for providing a force for the spool body 201 to rotate back to the initial position so as to tension the wire 1. The elastic restoring member 203 is a component of the prior art, which is generally a torsion spring, a coil spring or a spiral spring disposed in the housing, and is not described in detail in this embodiment.
The rotary shaft 3 includes a rotary shaft body 301, a second bearing 302, and a ferromagnetic body 303. The rotating shaft body 301 is a cylinder with a plurality of steps, the diameter of the step in the middle of the cylinder is larger than the diameters of other parts of the cylinder, and the step in the middle of the cylinder is provided with a second groove 3011 for winding the pull wire 1. The number of the second bearings 302 is two, the two bearings are respectively sleeved at two ends of the rotating shaft body 301, and the outer ring of the second bearing 302 is fixedly connected with the shell 5. The ferromagnetic member 303 is provided at an end portion of the rotation shaft 301, and generates a magnetic field, and changes the magnetic field according to the rotational movement of the rotation shaft 301.
The induction type encoder 4 and the strong magnet 303 are arranged relatively, the induction type encoder 4 is a magnetoelectric absolute value encoder, and the angle of the whole 360-degree range can be accurately measured through the magnetic field change generated by the rotation of the induction strong magnet 303.
As shown in fig. 3, a bobbin chamber 501 for accommodating the bobbin 2, a rotating shaft chamber 502 for accommodating the rotating shaft 3, a first oil chamber 503 for storing oil, a second oil chamber 504 for storing oil, and a cavity 505 for accommodating the induction encoder 4 are provided in the housing 5. The position of the winding shaft 2 wound with the pull wire is positioned in the first oil chamber 503, and the position of the rotating shaft 3 wound with the pull wire is positioned in the second oil chamber 504. The bobbin chamber 501 and the first oil chamber 503 communicate, and the cavity 505 and the second oil chamber 504 communicate with the rotating shaft chamber 502, respectively. A seal ring 506 for partitioning the seal cavity 505 and the second oil chamber 504 is provided between the rotary shaft chamber 502 and the rotary shaft 3. Through the technical scheme, the stay wire 1 always works in an oil environment, so that the displacement motion of the stay wire is smooth. The second oil chamber 504 is sealed and isolated from the cavity 505, and the cavity 505 is always in an oil-free environment, so that the separation of an electric environment and a hydraulic environment is realized, and the normal working environment of the induction type encoder 4 is ensured.
In order to reduce the installation difficulty of workers on the hydraulic oil cylinder and the displacement sensor, the stay wire 1 is connected with the center of the end part of the piston rod, and the central axis of the piston rod 7, the position of the stay wire 1 and the winding shaft 2 wound with the stay wire and the position of the rotating shaft 3 wound with the stay wire are positioned on the same plane. Therefore, the feeding precision of the hydraulic oil cylinder can get rid of the dependence on installation workers, and the consistency and the stability of the equipment are greatly improved.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.
Claims (7)
1. The utility model provides a sawing machine hydro-cylinder with built-in displacement sensor which characterized in that: this sawing machine hydro-cylinder with built-in displacement sensor includes:
the pull wire (1) is sequentially wound on the rotating shaft (3) and the winding shaft (2), and the end parts of two ends of the pull wire are respectively connected with the measured object and the winding shaft (2);
the winding shaft (2) is wound with the pull wire (1) in a multi-coil surrounding mode, fixes the end part of the pull wire (1) and tensions the pull wire (1);
the rotating shaft (3) is wound with the pull wire (1) in a single-circle surrounding mode, rotates under the pulling action of the pull wire (1) and outputs a signal proportional to the displacement of the pull wire (1);
the induction type encoder (4) is used for measuring an output signal of the rotating shaft (3) to obtain the displacement of a measured object;
a housing (5) for accommodating the bobbin (2), the rotating shaft (3) and the inductive encoder (4);
a cylinder (6) with an end connected to the housing (5);
and the piston rod (7) is arranged in the cylinder barrel (6), and the end part of the piston rod (7) is connected with the pull wire (1).
2. The cylinder of a sawing machine with built-in displacement sensor according to claim 1 characterized by that: the winding device is characterized in that a winding shaft cavity (501) used for containing a winding shaft (2), a rotating shaft cavity (502) used for containing a rotating shaft (3), a first oil cavity (503) used for storing oil, a second oil cavity (504) used for storing the oil and a cavity (505) used for containing an induction type encoder (4) are arranged in the shell (5), the winding shaft (2) is located in the first oil cavity (503) around the position where a stay wire is arranged, and the rotating shaft (3) is located in the second oil cavity (504) around the position where the stay wire is arranged.
3. The cylinder of a sawing machine with built-in displacement sensor according to claim 2 characterized by that: the winding shaft cavity (501) is communicated with the first oil cavity (503), the cavity (505) and the second oil cavity (504) are respectively communicated with the rotating shaft cavity (502), and a sealing ring (506) used for separating the sealing cavity (505) and the second oil cavity (504) is arranged between the rotating shaft cavity (502) and the rotating shaft (3).
4. The cylinder of a sawing machine with built-in displacement sensor according to claim 1 characterized by that: the winding shaft (2) comprises a winding shaft body (201), a first bearing (202) and an elastic resetting piece (203), the winding shaft body (201) is sleeved with the first bearing (202), the elastic resetting piece (203) is connected with the winding shaft body (201), the elastic resetting piece (203) is used for providing force circling to the initial position for the winding shaft body (201) to pull the wire (1) in a tensioning mode, and the winding shaft body (201) is provided with a first groove (2011) used for winding the wire (1).
5. The cylinder of a sawing machine with built-in displacement sensor according to claim 1 characterized by that: rotation axis (3) are including rotatory axis body (301), second bearing (302) and strong magnet (303), and on rotatory axis body (301) was located in second bearing (302) cover, rotatory axis body (301) tip was located in strong magnet (303), and induction type encoder (4) set up with strong magnet (303) relatively, rotatory axis body (301) are equipped with and are used for around establishing second recess (3011) of acting as go-between (1).
6. The cylinder of a sawing machine with built-in displacement sensor according to claim 1 characterized by that: the induction type encoder (4) is a magnetoelectric absolute value encoder.
7. The cylinder of a sawing machine with built-in displacement sensor according to claim 1 characterized by that: the pull wire (1) is connected with the center of the end part of the piston rod, and the central axis of the piston rod (7), the pull wire (1), the winding shaft (2) and the rotating shaft (3) are positioned on the same plane around the position where the pull wire is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121579332.1U CN215719912U (en) | 2021-07-12 | 2021-07-12 | Sawing machine oil cylinder with built-in displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121579332.1U CN215719912U (en) | 2021-07-12 | 2021-07-12 | Sawing machine oil cylinder with built-in displacement sensor |
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| Publication Number | Publication Date |
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| CN215719912U true CN215719912U (en) | 2022-02-01 |
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| CN202121579332.1U Active CN215719912U (en) | 2021-07-12 | 2021-07-12 | Sawing machine oil cylinder with built-in displacement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700699A (en) * | 2021-07-12 | 2021-11-26 | 浙江璐远机械科技有限公司 | High-precision oil cylinder displacement sensor and hydraulic oil cylinder |
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2021
- 2021-07-12 CN CN202121579332.1U patent/CN215719912U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700699A (en) * | 2021-07-12 | 2021-11-26 | 浙江璐远机械科技有限公司 | High-precision oil cylinder displacement sensor and hydraulic oil cylinder |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230116 Address after: 321404 Room 501, Building 5 and 6, Zhongchuang Microenterprise Park, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Patentee after: Zhejiang Luyuan Intelligent Technology Co.,Ltd. Address before: 321400 No. 89, Xidong third lane, kengyan village, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Patentee before: Zhejiang Luyuan Machinery Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A sawing machine oil cylinder with built-in displacement sensor Effective date of registration: 20231218 Granted publication date: 20220201 Pledgee: Lishui Jinyun Sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: Zhejiang Luyuan Intelligent Technology Co.,Ltd. Registration number: Y2023980071854 |