JPS58501892A - Combined linear motor and carriage - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] When combined with the near motor and carrier, the present invention beam is attached to the near motor and the side. This is related to the combination with external carriers and jis that can be attached, and more specifically, the key The center of gravity of the motor armature is aligned with the center of force of the motor. This is related to the near motor and carry.

2. Description of prior art Linear motors have many uses in industry, but the present invention A magnetic Describe the linear motor and carriage used in optical disk storage devices. I'll decide.

A magnetic disk storage device of the type that can use the linear motor of the present invention is To obtain relatively inexpensive large amounts of memory or storage devices that can be accessed by It is widely used. A typical disk storage device is coated with a suitable magnetic material. , several disks mounted on a common spindle for rotation, and adjacent a pair of tranches supported on a pair of elongated supports for insertion between the discs; The head of each pair is oriented in the opposite direction, and the head of each pair is oriented in the opposite direction. contact the opposite sides of the disc. The support structure is coupled to the linear motor. Rini Yamota usually includes a coil. The coil is placed in a magnetic field for linear motion. radially above the surface of the disk and directed toward the disk. position on any annular tab on their surface by moving in the direction be able to do so. In normal operation, the linear motor A set of concentric recording tracks on the disk, in response to control signals from the To record a data signal on one selected track, and radially to the transducer to retrieve the data signal from the transducer. position.

Widely used computer motors have one tube open and a matching cylindrical tube A more supported helical armature coil extends into the open end of the motor.

The coil is glued to the end of a cylindrical tube, and the cylindrical tube is exposed to the action of the motor coil. 9 is attached to the carry that moves forward and backward. Equipment that needs to be moved is placed in a carriage. Be possessed. Equipment fixed to the carrier (blasder removal and writing transducer) robots) move with high accuracy on precisely polished routes.

The dynamic speed required to move the read-write transducer along a precise axis Accuracy is based on the fact that the carry, the jigari, and the other end are coaxial, and that the transformer 7'-1 is Requires that the and 9 elements for the 3 It is generally believed that. For non-coaxial transfer of motion from the armature coil , carriage, ji, and parts of that carriage cannot achieve the claimed accuracy. This results in distortion.

Unfortunately, when installing the carriage coaxially with the linear motor, They require considerable length to accommodate the coils and magnetic structures. can Since there is currently an emphasis on obtaining smaller magnetic storage devices, motor/carrier requires a significant amount of longitudinal space due to its coaxial configuration.

As technology advances to save space, the movement parallel to the axis of the armature For this purpose, it has been proposed to install a carriage on the side of the linear motor.

Such a coupled motor and a carrier attached to the (ii, i1 side) The combination with George was given to Gillum (DonaldE, Gillum) ``Combined 1inear motor and carriage (Combined 1inear motor and carriage) U.S. Patent No. 365 entitled Motor and Carriage) J. No. 6015, disclosed and claimed in US Pat.

In this glazed motor, the center of gravity of the moving mass is within the force exerted by the motor. Experience has shown that serious problems arise due to a lack of unity of mind.

In other words, the force that deviates from the transverse vibration mode, which was not observed in the coaxial structure, is excited. Therefore, in such a structure, it is recognized that the common electricity of the structure will be seriously counted. 4 Hamoto Sho 58-! i[11892(3). the only one that resists that lateral force The method is to preload the bearings, but under certain circumstances this is ineffective. This may cause the carriage bearing to fail. This is done in a runaway situation. Happens often. In other words, one problem with linear motors and servo loops in general is , the motor may be lost in the loop or near the motor. In other words, to , the computer runs the transducer to look for a tiger that has already passed by. It may signal the linear motor to move the user in one direction. That's true. until the mechanical stop, which is the end of the head's movement, is reached. Often the head continues to accelerate.

When the center of gravity of a moving mass that is offset from the center of force resembles a mechanical stop. The force of the impact is greater than the load previously applied to the bearing, so the impact causes damage to the bearing. However, sometimes it is excluded from the list.

Summary of the invention According to the invention, these problems are solved in a previously unknown manner. Ru. The present invention provides a method for accommodating a head, an armature 2 and a magnetic structure arranged in series. I by providing an external carriage which can be mounted on the side for the length required for This will solve the problem.

Furthermore, the problem of the joint power counting and misalignment of the structure in the above-mentioned US patent was solved by In order to have an equal mass on each side of the center of the force so that the This problem is solved by configuring the carriage and carriage path.

As a result, there is no force imparting shear torque, and the problem of structural co-current is eliminated. child This places the break stop location very close to the center of gravity, which makes the carriage Even if the assembly is slowed down, it will not be rotated.

In summary, the present invention has a sunnier motor, a side-mounted external carriage, and The combination of an elongated iron core with a longitudinal axis of motion and movement along that axis The lightning, ladder and the number of frames fixed on both sides of the iron core can be combined with each other. It is connected to the Kth element to move with the armature along the shaft, and the capacitor is a carriage assembly that can be attached to a carriage or carriageway; The assembly part is installed on the image side of the iron core, and is connected to the carrier, the assembly and its The center of gravity of all elements that are 2-M in this direction approximately follows the center of force of the iron core, It is an object of the invention that the external carriage is attached laterally or associated with a near motor. The aim is to solve the various problems that arise. The feature of the present invention is that the weight of carrier, di and locating said center of gravity so that the center of gravity is aligned with the center of force of the iron core and armature; The goal is to solve those problems. The benefits you get are: Carriage assembly The purpose is to eliminate the force that tries to rotate the assembly. Another advantage is that the construction The goal is to solve the problem. A further advantage is that the carriage bearings are free from the carriage path. It is to eliminate the feeling of being kicked out. Yet another advantage? Construct the chair and coil. It is to make it into a structural member. Another difference is that force and motion are symmetrical about the center line. This is a bearing guidance device. Another advantage is that inside the magnetic structure, inside the moving mass It is possible to provide a destructive strike bumper placed on the conductor.

Further objects, features, attendant advantages, etc. of the present invention are set forth below in connection with the accompanying drawings. From reading and reading the explanation of the preferred practice to be described, it is not clear to this person. There will be. In the accompanying drawings, the same numbers refer to the same parts in several figures. It refers to

Brief description of the drawing Figure 1 is a book showing the operational relationship between a fixed support and a rotating magnetic disk. A set of external carriages made according to the invention and equipped with a near motor and a side A perspective view of the mating, Figure 2 is a plan view of Figure 1; Figure 3.4.5 is a sectional view taken along lines 3-3, 4-4, and 5-5 in Figure 2. , 6 is a partial sectional view taken along line 5-5 in FIG. 5. FIG.

Explanation of a suitable example Reference is now made to the drawings. The figure shows a connected IJ near motor and 9 motors on the side. external carriage, (the combination of lies indicated generally at 10 is System 7 A read and write transceiver on the surface 11 of a moving data medium, such as a A preferred implementation thereof is used in a magnetic data storage device to move the sensor 12. Illustrated by example. Both sides 11 of the disk 1.3 are usually coated with a magnetic material. It is now possible to magnetically record data on the surface of the Disk 13 spins It is attached coaxially to a dollar (not shown). That spindle is that spindle. a spindle motor that rotates the disk 13 about an axis defined by the (not shown).

Signal applied to transducer assembly 2, commonly referred to as "head" As a result, data is recorded on the disk surface 11. Head 12 is a gimbal The assembly 2 & is connected to the free end of a sturdy cantilevered arm 14. Section 1.3 ．． 4, in order to record data on both sides 11 of the disk 13, a large number of The arm 14/head 12 can be installed in a facing relationship. All arms 14 are It is connected to a common portion 19 of the ri and ji 15. Carriage, as explained in more detail later. The armature 15 is physically coupled to the moving coil (armature) of the linear positioning motor 6. Ru. The motors position the head 12 in response to positioning signals applied to them. The carriage 15 can be moved linearly so as to move radially over the surface 11. can. This results in a plurality of annular shapes formed on the recording surface 11 of the disk. 8.Special publication 1984-! '1tl18! J2 (4) Any one of the following The door 12 can be selectively positioned over the top and bottom.

In normal operation, the disk 12 writes data to the surface of the disk 13. When writing or reading data from surface 11, head 12 is loaded. be done. To load the head means to move the head to the surface 11 of the disk 13. It simply means that the force of the spring is applied to push the scale towards the other direction. That power is Is there a reaction to the air cushion generated due to the high speed rotation of the disk 13? Thus, the head 12 actually flies just above the surface 11. For magnetic disk drive 12 is 0.508 mm (20 microinches) or more above surface 11. Can levitate to a lower distance. A device for supporting the dome 12 onto the surface 11, that and for retracting the head 12 against the surface 11. For a more complete description of the device, please refer to the assignee of this application, D≠−+M +Nie, Systems, Corporation (1) MA SystemsCorpo “Head Loading and Driving of Magnetic Storage Devices” assigned to Loading device (Head Loading and Retrieval App) aratus for Magnetic DiscStorage S7S7 5te) See pending U.S. patent application no. I want to be

The motor 16 includes a magnetic structure preferably made of high permeability iron. This structure is The central iron core also consists of 21, two end plates 22 and 23, a top plate 26, and a bottom plate 28.

Set screws 24 are used to attach the end plates 22.23 to the core 21 and ri 26.28. is used. To hold the entire magnetic structure in place, if 25. The same 27 is used. As a result, a very sturdy support structure for the motor 6 A structure is obtained.

A pair of permanent magnet slabs 31 and 32 are fixed to the top plate 26 and the bottom plate 28, respectively.

For fixing, a mechanical screw is a suitable means. The magnetization of slab 31.32 is indicated by the arrow The vertical direction is indicated by "A" (FIG. 5). Figure 5 shows the best As shown in FIG. As shown in FIG. It will be done. Inside their working cavity is a conductive material such as copper or aluminum. A coil 33 is arranged. The coil 33 has a rectangular cross section and is made of a suitable tube. (not shown) and has an end flange 34. As a result, carp The coil 33, its support tube, and the flange 34 surround the iron core 21, and the flow through the coil 33 is The iron core 21 reciprocates back and forth along the longitudinal direction depending on the current flowing therein. like that The operation of linear motors is well known to those skilled in the art.

The motor/carriage 10 includes a plurality of carriageways, particularly rods 35,36.

Their ports and doors are fixed on both sides of the motor 16. More specifically, the base Attach the bolt 37 to the side of the support 38 and 39 connected to the seat 25. , doors 35 and 36 can be built and stopped, respectively. Rods 35 and 36 are parallel It is parallel to the longitudinal axis of the iron core 21. And the axes of rods 35 and 36 The axes of the iron core 21 are preferably coplanar.

Attach the supporting arms 14 facing each other to the bolts 17 with the spacer 18 in between. They can be built against each other. The end of the arm near the bolt 17 and the groover 18 is the first part 1 of the carriage 15 located on one side of the motor 6 9. The carriage part 19 is a structure having any shape appropriate to its function. It is a member. Its function will be explained later. As mentioned above, the carriage part One end of 19 is connected to arm 14 and spacer 18 by build 17 . Carry One end of the edge portion 19 is sealed with a flange, such as with enoxy adhesive as shown at 40. Ji 34 and coil 33 K? E is tied. Carriage part 190 both sides have multiple A roller bearing 42 is supported by a plurality of axles 41. The roller bearing 42 has an angle of approximately 90 degrees. It touches the rod 35 at intervals. Four roller bearings separated by two above and below are keyed. Carriage portion 19 is moved along rod 35 with sufficient support for carriage portion 19. Carry out accurate kinship movements.

The carriage 15 includes another carriage part 43. This carriage part carries the coil. 33 is attached to the opposite side of the carriage portion 19. Carriage part 19 Similarly, the carriage portion 43 may have any shape appropriate to its function and operation. do. As best shown in Figures 2.4 and 5.6, the carrier and jig portions 43 is an elongated member, one side of which is coated with, for example, epoxy resin 44. It is connected to the flange 34 and the coil 33. The opposite side of the carriage part 43 is the axle 4 5 supports the roller bearing 46. Its roller bearing contacts the top of the rod 36 . The same side of the carrier portion 43 is also connected to one end of the spring member 48 by a screw 47. be done. The other end of the spring member 48 supports an axle 49. The axle 49 has a roller bearing. 50 is attached. The roller bearing 50 contacts the lower f11 portion of the rod 36.

The gear ridge portion 43 is sufficiently supported by the combination of roller bearings 46 and 50, The carriage part 43 is moved in a precise linear manner along the rod 36. Furthermore, the roller shaft By mounting the bridge 50 with a spring, the carriage 15 can be self-adjusted, i.e. That is, the carriage 15 is naturally aligned with the rods 35 and 36, thereby allowing the movable carriage to The entire ridge assembly remains aligned with the magnet structure.

The coil 33 is essentially a ridge section attached to both sides of the coil 33. 19.43 are used as structural members to interconnect them. According to the invention, it works The cap is positioned so that the center of mass of the entire structure is aligned with the center of force of the motor 16. The mass of the ridge portion 43 is the weight of the carrier, the ridge portion 19, the arm 14, and the weight supported by it. adjusted to be equal to the combined mass of the supported structure. As a result, When the motor 16 drives the coil 33 and carriage 15, torque is generated. Therefore, even if the joint or structure is bent, the line of movement of the head 12 will not be physically It cannot be bent.

Also, in accordance with the present invention, on the image side of the motor 16, four stocks are installed inside the magnetic structure. 51A, 51B and 52A.

52B is installed. In particular, stop 51a.

51b, 52A, and 52B are made of a suitable elastic material and meet the requirements of 4-)22.23. Each is connected to the opposite side. As best shown in Figure 4, the Stops 51a, 52a extend between core 21 and top plate 26, and stops 51. b, 52b extends between the iron core 21 and the bottom plate 28. What is clear is that the coil 33 When the flange 34 forming the end hits the stop, the carriage 15 is stop so as to decelerate its carriage 15 without applying torque to 51'a, 51b and 52a.

52b can be located very close to the center of gravity and symmetrically with respect to the center of gravity.

The features and advantages of the invention are now apparent. Shorten the overall length of motor/carriage 10 The carriage 15 is attached to the side of the motor 16 to make it easier. rod 35 The bearing guide consisting of and 36 is symmetrical with respect to the center of force bag and the guiding plane. vinegar The plates 5i, 52 are arranged on the center line of mass inside the magnetic structure. the result A combination of a highly efficient IJ near motor and a side-mounted external carriage. A match can be obtained.

Having thus described the present invention in terms of preferred practical embodiments made in accordance therewith, Those skilled in the art will recognize that various changes and improvements can be made without departing from the spirit of the invention. It should be obvious. Therefore, the invention is limited by the specific embodiments described. You understand that you are limited only by the scope of the claims appended hereto. Should.

Clean: (IJ content: 2 unchanged) Procedure city JF book R (method) 8ri 7th Encouragement in 1988 Commissioner of the Patent Office 1.Display of the incident PCT/IJS82,100389 2. Name of the invention Combined or near motor and carriage 3, corrector Things are good! Relationship with 1 Patent applicant Demny, Systems 1, Corporation 4 agents (104) 6th floor, Ginza Daisaku Building, 2-11-2 Ginza, Chuo-ku, Tokyo Phone: 03- 545-3508 (Representative) July 28, 1982 (Shipping date: August 2, 1982) 6. - Target of correction Drawing translation +7. compensation for compensation international search report

Claims (1)

[Claims] 1. an elongated core having a longitudinal axis of motion; with an armature that can move along A plurality of carriages fixed on both sides of the iron core, and a device on the carriage road. a key coupled to the armature for movement along the axis with the armature; carriage assembly; a portion of the carriage assembly is disposed on both sides of the iron core; and of said carriage assembly and all elements connected thereto. a linear motor arranged so that its center of gravity is approximately aligned with the center of force of said iron core; The mating of the outer carriage is mounted on the front and side. 2. The linear motor according to claim 1 and an external cap installed on the side. a combination of ridges, the iron core being supported at both ends, and the armature supporting the iron core at both ends; For reciprocating motion relative to the core, a linear motor and laterally mounted combination of external carriages placed. 3. The linear motor according to claim 2 and the external cap installed on the side. The armature is a combination of a tube having an end flange and surrounding the iron core; and a tube wound around the tube between the flanges. a spiral conductor coil; Fully equipped, combination of linear motor and side mounted external carriage. 4. The linear motor according to item 3 of claim f16 and the external device installed on the side. A combination of carriages, the carriage assembly comprising: a first cap connected to the flange of the tube and located on one side of the iron core; a pipe portion connected to the flange of the pipe and located on the other side of the iron core. a linear motor and a second carriage portion that combination of carriages. 5. The linear motor and the external cap installed on the side according to claim 4 a combination of ridges, each said carriage portion contacting said carriage path; IJ near motor and side mounted supporting at least one pair of roller bearings for combination of external carriages placed. 6. IJ near motor and side device according to claim 1 or 2 an external carriage combination, the carriage path comprising: first and second elongated ports located on opposite sides of the core; The longitudinal axes of the rods are parallel to each other and parallel to the longitudinal axis of the iron core. and a combination of external carriers and jis installed on the sides. 7. The linear motor and the external cap installed on the side according to claim 6 A combination of ridges, wherein the axes of the opening and the axis of the iron core are coplanar. Combination of Yamamotor and laterally located external carriage. 8. IJ near motor according to claim 6 and external device installed on the side A combination of carriages, the carriage and the assembly comprising: a first carriage portion located on one side of the iron core; The carriage +7 is structurally connected to the armature and is connected to the first carriage part. The opposite side of the first port is a linear bearing that supports a plurality of roller bearings that engage the first port. A combination of a motor and an external carrier mounted on the side. 9. Claim 8 A combination of ri and ji. 10. The linear motor and the external key installed on the side according to claim 8 a combination of carriages, the carriage assembly comprising: a second carriage located on an opposite side of the first carriage portion of the iron core; , further comprising a carriage portion, one side of the second carriage portion having a structure on the armature. and the opposite side of the second carriage portion engages the second port. A linear motor and a side-mounted external key support multiple roller bearings that fit together. combination of carriages. 11. The linear motor according to claim 10 and the device on the (iIil side) combination of external carriages. 12. Claims 1.2, 3.4 or 5° = A-mounted near motor and A combination of the following: a pair of mechanical stops made of elastic material and positioned in the path of said electrons; 1) coupling of the near motor and the external carriage mounted on the side; height. 13. The linear motor according to claim 12 and the external device installed therein. a combination of two carriages, the strips being a combination of the carriage assemblies; A linear motor located approximately on the center line and a linear motor located approximately on the center line and Combination of external carriages.