CN215824279U - Mechanical spindle magnetic encoder and installation tool thereof - Google Patents
Mechanical spindle magnetic encoder and installation tool thereof Download PDFInfo
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- CN215824279U CN215824279U CN202120921713.7U CN202120921713U CN215824279U CN 215824279 U CN215824279 U CN 215824279U CN 202120921713 U CN202120921713 U CN 202120921713U CN 215824279 U CN215824279 U CN 215824279U
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- magnetic ring
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Abstract
The utility model provides a mechanical spindle magnetic encoder which comprises a magnetic ring and a reading head, wherein the magnetic ring is fixed on a mechanical spindle, the reading head is arranged above the top of the magnetic ring, a gap is reserved between the reading head and the magnetic ring, a fourth connecting hole is formed in the magnetic ring, a connecting part is arranged on the reading head, the reading head comprises a base and a transition block for installing the base, the reading head is fixed on the transition block, and the base is fixed on a spindle box; the utility model also provides an installation tool for the mechanical spindle magnetic encoder, which comprises a positioning tool used between the reading head and the magnetic ring. According to the utility model, the fourth connecting hole is formed in the magnetic ring and is fixed on the mechanical spindle, and the connecting part is arranged to fix the reading head on the spindle box, so that the magnetic-field reading device is convenient to install, high in stability, high in measurement precision, easy to disassemble and free from influencing the service life; the positioning tool is adopted to control the distance between the reading head and the magnetic ring, the reading head and the magnetic ring are consistent in radial position, the operation is simple, the efficiency is high, and the positioning accuracy is high.
Description
Technical Field
The utility model belongs to the field of numerical control machines, and particularly relates to a mechanical spindle magnetic encoder and an installation tool thereof.
Background
In the field of numerical control machine tools, the complexity of workpieces is increasing, and the requirements on the machining precision of the workpieces are also increasing. When a turning and milling combined lathe is used for milling a workpiece, the positioning accuracy of a lathe spindle directly influences the processing accuracy and quality of the workpiece, for example, when the lathe spindle is used as a Cs position axis for control in polar coordinate interpolation milling and cylindrical interpolation milling, a main encoder is required to have extremely high accuracy and reliability to realize control and measurement of displacement and angle.
The main shaft encoder mainly comprises two types of photoelectric encoders and magnetic encoders, the photoelectric encoders need to be matched with a transmission mechanism on a lathe main shaft for use, the photoelectric encoders cannot be directly installed on the lathe main shaft, the installation process is complicated, the machining precision of workpieces is easily influenced by the transmission mechanism, meanwhile, a main shaft system of the photoelectric encoders is also easily damaged, the service life of the photoelectric encoders is influenced, based on the defects, the magnetic encoders become a better choice for improving the machining precision of the workpieces, the magnetic encoders can be directly connected with the lathe main shaft without the transmission mechanism and have the characteristics of high shock resistance, easy adjustment and installation and maintenance, but the existing magnetic encoders are generally installed on the lathe main shaft by utilizing the principle of thermal expansion, the magnetic rings of the encoders need to be heated during installation and then are sleeved on the lathe main shaft, and the operation of the heating installation is easily limited, the problem of difficult disassembly also exists when the magnetic ring of the magnetic encoder is taken out; meanwhile, when an encoder magnetic ring and a magnetic induction reading head are installed, multiple times of manual adjustment and positioning are needed, the operation is time-consuming, and the problem of human errors exists.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a mechanical spindle magnetic encoder and an installation tool thereof, aiming at the defects of the prior art. According to the magnetic encoder, the fourth connecting hole is formed in the magnetic ring, the magnetic ring is fixedly connected to the mechanical spindle, the connecting part is arranged to fixedly connect the reading head to the spindle box, and the magnetic ring and the reading head are fixedly arranged on the machine tool, so that the magnetic encoder is convenient to install and high in stability, the measuring precision of the machine tool spindle is greatly improved, the magnetic ring cannot be damaged in the dismounting process, and the service life of the magnetic encoder is prolonged; the installation tool is used for controlling the distance between the reading head and the magnetic ring, the reading head and the radial position of the magnetic ring are kept consistent, manual intervention is not needed in the process of positioning and installing by the installation tool, the operation is simple, the efficiency is high, and the positioning accuracy is high.
In order to solve the technical problems, the utility model adopts the technical scheme that: the magnetic encoder is characterized by comprising a magnetic ring and a reading head matched with the magnetic ring for use, wherein the magnetic ring is fixed on a mechanical spindle of a machine tool, the reading head is installed above the top of the magnetic ring, a gap is reserved between the reading head and the magnetic ring, a fourth connecting hole is formed in the magnetic ring, a connecting part fixedly connected with a spindle box of the machine tool is arranged on the reading head, the connecting part comprises a base and a transition block installed on the base, the reading head is fixed on the transition block, and the base is fixed on the spindle box.
The magnetic encoder for the mechanical spindle is characterized in that a key is arranged on the transition block and on the vertical direction of the contact surface of the base, a key groove is formed in the base, the key is in contact fit with the key groove, a second connecting hole is formed in the transition block, and the transition block is installed on the base through the second connecting hole and the fixing piece in a matched mode.
The mechanical spindle magnetic encoder is characterized in that the reading head is provided with a third connecting hole, the transition block is provided with a fixing hole matched with the third connecting hole, and the base is provided with a first connecting hole.
The mechanical spindle magnetic encoder is characterized in that a boss is arranged at the bottom of the transition block.
The magnetic encoder for the mechanical spindle is characterized in that a plurality of magnetic poles are uniformly distributed in the magnetic ring along the circumference, a detection element is arranged in the reading head, and the detection element is a Hall detection element.
In addition, the utility model also provides an installation tool for the mechanical spindle magnetic encoder, which is characterized by comprising a positioning tool, wherein the positioning tool is used between the reading head and the magnetic ring, the positioning tool comprises a first reference panel, the top surface of the first reference panel is attached to the induction detection surface of the reading head, and the bottom surface of the first reference panel is attached to the top surface of the magnetic ring.
The mounting tool is characterized by further comprising a second reference panel, wherein the second reference panel is perpendicular to the first reference panel, the upper half face of the inner side of the second reference panel is attached to the side face of the reading head, and the lower half face of the inner side of the second reference panel is attached to the side face of the magnetic ring.
The installation tool is characterized in that the top surface of the first reference panel is a plane, and the bottom surface of the first reference panel is an arc surface.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the fourth connecting hole is formed in the magnetic ring, so that the magnetic ring is fixedly connected to the mechanical spindle, the stability is higher, the disassembly is convenient, the magnetic ring cannot be damaged in the disassembly process, the service life of the magnetic encoder is prolonged, the structure is simple, the size is small, the installation and the use are easy, the installation difficulty is greatly reduced, meanwhile, the reading head is fixedly connected to the spindle box through the arranged connecting part, the measurement precision of the spindle of the machine tool is greatly improved due to the stable installation of the reading head, and the machining precision of workpieces is further improved.
2. According to the magnetic encoder, the transition block is provided with the key, the base is provided with the key groove, and the transition block moves in the vertical direction of the base through the mutual matching of the key and the key groove, so that the relative position of the reading head and the magnetic ring arranged on the transition block is adjusted by adjusting the relative position of the transition block and the base, the position relation between the reading head and the magnetic ring is ensured to be adjustable, namely the position of the reading head is adjusted to enable the reading head to have a reasonable clearance distance with the magnetic ring, and the normal operation of the magnetic encoder is further ensured.
3. According to the magnetic encoder installation tool, the positioning tool is used as the installation tool to adjust the vertical distance between the reading head and the magnetic ring, the reference surface of the positioning tool has a fixed thickness, so that the consistency of the distance between the reading head and the magnetic ring is ensured, manual repeated adjustment is not needed in the process, the operation is simple, the problem of positioning errors caused by manual operation is avoided, and the installation work efficiency of the magnetic encoder is also improved.
4. According to the utility model, the second reference panel and the first reference panel which are provided with the positioning tool are mutually vertical, the upper half surface of the inner side of the second reference panel is attached to the side surface of the reading head, and the lower half surface of the inner side of the second reference panel is attached to the side surface of the magnetic ring, so that the reading head and the magnetic ring are kept consistent up and down in radial positions, the running stability of the magnetic encoder is further improved, and the processing precision of a workpiece is ensured.
5. According to the utility model, the top surface of the first reference panel is set to be a plane, the reading head with a plane contact surface is attached to the top surface of the first reference panel, the ground surface of the first reference panel is set to be a cambered surface, the surface of the first reference panel is attached to the shape of the circular magnetic ring, the first reference panel is ensured to be attached to the contact surfaces of the reading head and the magnetic ring, the consistency of the fit clearance distance between the reading head and the magnetic ring is improved, the consistency of the batch workpiece processing production is further improved, and the precision qualification rate of the processed workpieces is improved.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic view of an assembly structure of a magnetic encoder and an installation tool thereof according to the present invention.
Fig. 2 is a front view of an assembly structure of the magnetic encoder and the mounting tool thereof of the present invention.
Fig. 3 is a left side view of an assembly structure of the magnetic encoder and the mounting tool thereof of the present invention.
Fig. 4 is a plan view of an assembly structure of the magnetic encoder and the mounting tool thereof according to the present invention.
FIG. 5 is a schematic diagram of a transition block structure of a magnetic encoder of the present invention.
Fig. 6 is a schematic structural diagram of the installation tool of the present invention.
Fig. 7 is a front view of the installation tool of the present invention.
Fig. 8 is an assembly view of the present invention in use.
Description of reference numerals:
1, a main spindle box; 2-a mechanical main shaft; 3, a base;
3-1-key slot; 3-2 — a first connection hole; 4-a transition block;
a 4-1-bond; 4-2 — a second connection hole; 4-3-fixed holes;
4-boss; 5-a reading head; 5-1 — third connection hole;
6, a magnetic ring; 6-1-fourth connection hole; 7, positioning a tool;
7-1 — a first datum panel; 7-2 — second datum plate.
Detailed Description
Example 1
As shown in fig. 1 and 8, the mechanical spindle magnetic encoder of this embodiment includes a magnetic ring 6 and a reading head 5 used in cooperation with the magnetic ring 6, the magnetic ring 6 is fixed on a mechanical spindle 2 of a machine tool, the reading head 5 is installed above the top of the magnetic ring 6, a gap is formed between the reading head 5 and the magnetic ring 6, a fourth connecting hole 6-1 is formed in the magnetic ring 6, a connecting part for fixedly connecting with a spindle head 1 of the machine tool is provided on the reading head 5, the connecting part includes a base 3 and a transition block 4 installed on the base 3, the reading head 5 is fixed on the transition block 4, and the base 3 is fixed on the spindle head 1.
In this embodiment, a magnetic encoder composed of a magnetic ring 6 and a reading head 5 is used in cooperation with a numerical control machine tool, the magnetic ring 6 is fixed on a mechanical spindle 2 of the machine tool and rotates along with the mechanical spindle 2, that is, along with a workpiece in the mechanical spindle 2, the reading head 5 is fixed on a spindle box 1 of the machine tool and is connected with a control system of the numerical control machine tool, a control signal sent by the control system controls the movement of the mechanical spindle 2, and a gap is arranged between the reading head 5 and the magnetic ring 6, so that the reading head 5 detects the rotation speed and position of the spindle and controls the movement of the mechanical spindle 2 by detecting the change of a magnetic field in the movement process of the magnetic ring 6, and finally realizes the detection and control of the angle or displacement of the workpiece in the milling process; the reading head 5 is fixed on the main shaft box 1 by the connecting component, namely the reading head 5 is fixed on the transition block 4, the base 3 is fixed on the main shaft box 1, then the transition block 4 is installed on the base 3, the installation of the reading head 5 on the main shaft box 1 is realized, the connecting component enables the reading head 5 to be connected to the main shaft box 1 in a mechanical fixing mode, meanwhile, a fourth connecting hole 6-1 is formed in the magnetic ring 6, a through hole is reserved for fixing the magnetic ring 6 on the mechanical main shaft 2, in the actual operation, the magnetic ring 6 is fixed on the mechanical main shaft 2 through mechanical installation parts such as screws, compared with the existing method that the magnetic ring is connected to the mechanical main shaft in a thermal expansion mode, the mechanical installation parts are more beneficial to installation operation, the stability is higher, the disassembly is convenient, the magnetic ring cannot be damaged in the disassembly process, and the service life of the magnetic encoder is prolonged, the connecting part added in the utility model has simple structure, small volume and easy installation and use, greatly reduces the installation difficulty, and simultaneously, the stable installation of the magnetic ring 6 and the reading head 5 also greatly improves the measurement precision of the machine tool spindle, thereby improving the processing precision of the workpiece.
As shown in fig. 4 and fig. 5, optionally, in this embodiment, a key 4-1 is disposed in a vertical direction of a contact surface of the transition block 4 and the base 3, a key slot 3-1 is formed on the base 3, the key 4-1 is in contact fit with the key slot 3-1, a second connection hole 4-2 is formed on the transition block 4, and the transition block 4 is mounted on the base 3 through the fit of the second connection hole 4-2 and a fixing member. The base 3 is fixed on the spindle box 1, the reading head 5 is fixed on the transition block 4, the reading head 5 is positioned above the top of the magnetic ring 6, the magnetic ring 6 is fixed on the mechanical spindle 2, the positions of the base 3 and the magnetic ring 6 are fixed, the transition block 4 is provided with a key 4-1, the base 3 is provided with a key slot 3-1, the transition block 4 moves in the vertical direction of the base 3 through the mutual matching of the key 4-1 and the key slot 3-1, so that the relative positions of the reading head 5 and the magnetic ring 6 are adjusted by adjusting the relative positions of the transition block 4 and the base 3, the position relation between the reading head 5 and the magnetic ring 6 is ensured to be adjustable, namely the position of the reading head 5 is adjusted to have a reasonable clearance distance with the magnetic ring 6, the normal operation of the magnetic encoder is ensured, and after the distance between the reading head 5 and the magnetic ring 6 is adjusted, the transition block 4 is fixed on the base 3 through the second connecting hole 4-2 by using a fixing piece, and when the transition block is actually used, a jackscrew is used as the fixing piece to prevent the transition block 4 and the base 3 from moving relatively, so that the relative position of the transition block 4 on the base 3 can be conveniently adjusted by using the jackscrew, the transition block is convenient to disassemble, and the gap distance between the reading head 5 and the magnetic ring 6 can be conveniently adjusted.
As shown in fig. 1 and 5, optionally, in this embodiment, the reading head 5 is provided with a third connecting hole 5-1, the transition block 4 is provided with a fixing hole 4-3 matched with the third connecting hole 5-1, and the base 3 is provided with a first connecting hole 3-2. A third connecting hole 5-1 formed in the reading head 5 is matched with a fixing hole 4-3 formed in the transition block 4, so that the reading head 5 is fixedly mounted on the transition block 4, wherein the third connecting hole 5-1 is a through hole, so that the fixed connecting part completely penetrates through the reading head 5 to be connected with the transition block 4, and the stability of the reading head 5 on the transition block 4 is improved; a first connecting hole 3-2 formed in the base 3 is used for connecting the base 3 to the spindle box 1, so that the reading head 5 is fixedly connected to the spindle box 1.
As shown in fig. 5, optionally, in this embodiment, a boss 4-4 is provided at the bottom of the transition block 4. The bosses 4-4 are arranged on the transition block 4, the bottom of the reading head 5 is in contact with the bosses 4-4, a clamping table top is provided for mounting the reading head 5 on the transition block 4, the stability of the reading head 5 on the transition block 4 is further improved, the detection precision of the reading head 5 is further improved, the workpiece processing precision is improved, when the magnetic encoder is actually used, the contact surface of the bosses 4-4 and the reading head 5 is arc-shaped and is consistent with the shape of the magnetic ring 6, the magnetic encoder is more beneficial to matching of the reading head 5 and the magnetic ring 6, and the detection stability of the magnetic encoder is improved.
As shown in fig. 1, optionally, in this embodiment, a plurality of magnetic poles are uniformly distributed inside the magnetic ring 6 along the circumference, and a detection element is arranged inside the reading head 5, where the detection element is a hall detection element. In this embodiment, AS the AS5306 type hall detection element and the 1VPP signal magnetic encoder are adopted, and after the sine wave signal is subdivided in the machine tool driver, the resolution of the spindle position can reach 1048576 pulses, and the detection precision is extremely high.
As shown in fig. 1 to 7, the mounting tool for a magnetic encoder of a mechanical spindle of the present embodiment includes a positioning tool 7, the positioning tool 7 is used in a gap between the reading head 5 and the magnetic ring 6, the positioning tool 7 includes a first reference panel 7-1, a top surface of the first reference panel 7-1 is attached to an induction detection surface of the reading head 5, and a bottom surface of the first reference panel 7-1 is attached to a top surface of the magnetic ring 6.
In this embodiment, the vertical distance between the reading head 5 and the magnetic ring 6 is adjusted by the positioning tool 7, so as to ensure the normal operation of the magnetic encoder, the first reference panel 7-1 of the positioning tool 7 is a panel with a certain thickness, when the bottom of the reading head 5, namely, the sensing detection surface is attached to the top surface of the first reference panel 7-1, the top surface of the magnetic ring 6 is attached to the bottom surface of the first reference panel 7-1, so that the gap between the reading head 5 and the magnetic ring 6 after installation is the panel thickness of the first reference panel 7-1, and the thickness of the panel is determined, so as to ensure the consistency of the distance between the reading head 5 and the magnetic ring 6.
As shown in fig. 1 and fig. 6, optionally, in this embodiment, the positioning tool 7 further includes a second reference panel 7-2, the second reference panel 7-2 is perpendicular to the first reference panel 7-1, an upper half of an inner side of the second reference panel 7-2 is attached to a side surface of the reading head 5, and a lower half of the inner side of the second reference panel 7-2 is attached to a side surface of the magnetic ring 6. The second reference panel 7-2 is perpendicular to the first reference panel 7-1, the upper half face of the inner side of the second reference panel 7-2 is attached to the side face of the reading head 5, and the lower half face of the inner side of the second reference panel 7-2 is attached to the side face of the magnetic ring 6, so that the reading head 5 and the magnetic ring 6 are kept consistent up and down in radial positions, the running stability of the magnetic encoder is further improved, and the machining precision of a workpiece is guaranteed.
As shown in fig. 6 and 7, optionally, in this embodiment, the top surface of the first reference panel 7-1 is a flat surface, and the bottom surface is an arc surface. The top surface of the first reference panel 7-1 is set to be a plane, the top surface is more attached to the reading head 5 with a plane contact surface, the ground of the first reference panel 7-1 is set to be a cambered surface, the ground is more attached to the shape of the circular magnetic ring 6, the attachment of the first reference panel 7-1 to the contact surfaces of the reading head 5 and the magnetic ring 6 is guaranteed, the consistency of the fit clearance distance between the reading head 5 and the magnetic ring 6 is improved, the consistency of the batch workpiece processing production is improved, and the precision qualification rate of the processed workpieces is improved; in this embodiment, the thickness of the center of the first reference panel 7-1 is 0.15mm, so that the gap distance between the reading head 5 and the magnetic ring 6 is 0.15mm, and the reading head 5 is ensured to stably read data.
As shown in fig. 8, the process of installing the mechanical spindle magnetic encoder by using the installation tool of the present invention is as follows: a magnetic ring 6 is sleeved and fixed on a mechanical main shaft 2, a base 3 is fixed on a main shaft box 1, a reading head 5 is fixed in a fixing hole 4-3 of a transition block 4, then the key 4-1 of the transition block 4 is clamped and fixed in the key slot 3-1 of the base 3, the positioning tool 7 is taken and put into the gap between the reading head 5 and the magnetic ring 6, the fixed piece connected with the transition block 4 and the base 3 is loosened, the induction detection surface of the reading head 5 is jointed with the top surface of the first reference panel 7-1, the side surface of the reading head 5 is jointed with the upper half surface of the inner side of the second reference panel 7-2, and after the side surface of the magnetic ring 6 is jointed with the bottom surface of the first reference panel 7-1 and the lower half surface of the inner side of the second reference panel 7-2, and (5) fastening the fixing piece between the transition block 4 and the base 3, and removing the positioning tool 7 to complete the installation of the magnetic encoder.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. The magnetic encoder for the mechanical spindle is characterized by comprising a magnetic ring (6) and a reading head (5) matched with the magnetic ring (6) for use, wherein the magnetic ring (6) is fixed on a mechanical spindle (2) of a machine tool, the reading head (5) is installed above the top of the magnetic ring (6), a gap is reserved between the reading head (5) and the magnetic ring (6), a fourth connecting hole (6-1) is formed in the magnetic ring (6), a connecting part fixedly connected with a spindle box (1) of the machine tool is arranged on the reading head (5), the connecting part comprises a base (3) and a transition block (4) installed on the base (3), the reading head (5) is fixed on the transition block (4), and the base (3) is fixed on the spindle box (1).
2. The mechanical spindle magnetic encoder according to claim 1, wherein a key (4-1) is arranged in a vertical direction of a contact surface of the transition block (4) and the base (3), a key groove (3-1) is formed in the base (3), the key (4-1) is in contact fit with the key groove (3-1), a second connecting hole (4-2) is formed in the transition block (4), and the transition block (4) is mounted on the base (3) through the fit of the second connecting hole (4-2) and a fixing member.
3. The mechanical spindle magnetic encoder according to claim 1 or 2, wherein the reading head (5) is provided with a third connecting hole (5-1), the transition block (4) is provided with a fixing hole (4-3) matched with the third connecting hole (5-1), and the base (3) is provided with a first connecting hole (3-2).
4. A mechanical spindle magnetic encoder according to claim 2, characterized in that the transition block (4) is provided with a boss (4-4) at the bottom.
5. A mechanical spindle magnetic encoder as claimed in claim 1, characterized in that the magnetic ring (6) has a plurality of magnetic poles uniformly distributed along its circumference, and the reading head (5) has a detecting element therein, wherein the detecting element is a hall detecting element.
6. A mounting tool for a mechanical spindle magnetic encoder according to any one of claims 1 to 5, characterized by comprising a positioning tool (7), wherein the positioning tool (7) is used between a gap between the reading head (5) and the magnetic ring (6), the positioning tool (7) comprises a first reference panel (7-1), the top surface of the first reference panel (7-1) is attached to the induction detection surface of the reading head (5), and the bottom surface of the first reference panel (7-1) is attached to the top surface of the magnetic ring (6).
7. The mounting tool according to claim 6, wherein the positioning tool (7) further comprises a second reference panel (7-2), the second reference panel (7-2) is perpendicular to the first reference panel (7-1), the upper half of the inner side of the second reference panel (7-2) is attached to the side surface of the reading head (5), and the lower half of the inner side of the second reference panel (7-2) is attached to the side surface of the magnetic ring (6).
8. The mounting tool according to claim 6, wherein the top surface of the first datum plate (7-1) is a plane, and the bottom surface of the first datum plate is an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120921713.7U CN215824279U (en) | 2021-04-30 | 2021-04-30 | Mechanical spindle magnetic encoder and installation tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120921713.7U CN215824279U (en) | 2021-04-30 | 2021-04-30 | Mechanical spindle magnetic encoder and installation tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215824279U true CN215824279U (en) | 2022-02-15 |
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ID=80188429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120921713.7U Active CN215824279U (en) | 2021-04-30 | 2021-04-30 | Mechanical spindle magnetic encoder and installation tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215824279U (en) |
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2021
- 2021-04-30 CN CN202120921713.7U patent/CN215824279U/en active Active
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