CN204831662U - Magnetic head bearing moment of torsion detection device - Google Patents
Magnetic head bearing moment of torsion detection device Download PDFInfo
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- CN204831662U CN204831662U CN201520581093.1U CN201520581093U CN204831662U CN 204831662 U CN204831662 U CN 204831662U CN 201520581093 U CN201520581093 U CN 201520581093U CN 204831662 U CN204831662 U CN 204831662U
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Abstract
The utility model relates to a magnetic head bearing moment of torsion detection device, this magnetic head bearing moment of torsion detection device includes: mount pad, the tight unit of clamp and detecting element wherein, are equipped with a bearing position axle on the mount pad for supply the magnetic head bearing housing of magnetic head to locate on it, it includes that one presss from both sides tight piece to press from both sides tight unit, press from both sides a tight piece movably install in on the mount pad, through press from both sides tight piece with the cooperation of bearing position axle is pressed from both sides tightly the magnetic head to it is right to utilize a bearing pressure head the magnetic head is fixed a position, detecting element includes a permanent magnet, permanent magnet movably install in on the mount pad, work as the permanent magnet motion extremely the below of magnetic head makes the magnetic head according to the opposite direction motion of permanent magnet direction of motion is with right the moment of torsion of magnetic head bearing detects. The utility model discloses a problem of the magnetic head bearing moment of torsion check -out time overlength that magnetic head bearing moment of torsion detection device can avoid having now.
Description
Technical field
The utility model relates to hard disc magnetic head field tests, particularly relates to a kind of magnetic head bearing torque pick-up unit.
Background technology
Because the requirement of consumer to hard disk performance is more and more higher, and as core component---the magnetic head bearing of hard disk, the torsional performance after its assembling will directly have influence on the readwrite performance of hard disk.
At present, the assembly process of magnetic head bearing is generally adopt the mode of some glue to carry out, and which results in and may have the risk that part cull clings magnetic head bearing enclose.Existing production line is detected by the moment of torsion of pressure transducer to magnetic head bearing mostly, and this detection time reaches 12s, in order to improve detection efficiency, usually adopts the mode taken a sample test, and this just makes the magnetic head bearing leaving cull there is undetected risk.
Utility model content
The purpose of this utility model is to provide a kind of magnetic head bearing torque pick-up unit, for solving the problem of the overlong time that magnetic head bearing torque detects in prior art.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of magnetic head bearing torque pick-up unit comprises: mount pad, clamping unit and detecting unit, and wherein, mount pad is provided with a bearing locating shaft, provided thereon for the magnetic head bearing holder (housing, cover) for described magnetic head; Clamping unit comprises a clamp, and described clamp is installed on described mount pad movably, clamps described magnetic head by described clamp with coordinating of described bearing locating shaft, positions described magnetic head to utilize a bearing head; Detecting unit comprises a permanent magnet, described permanent magnet is installed on described mount pad movably, when described permanent magnet moves to the below of described magnetic head, described magnetic head is moved, to detect the moment of torsion of described magnetic head bearing according to the opposite direction of described permanent magnet direction of motion.
Further, one location-plate is fixed on the top of described mount pad, described bearing locating shaft is fixed thereon, and is sheathed between the magnetic head of described bearing locating shaft and described location-plate and keeps a gap, moves to the below of described magnetic head for described permanent magnet along the upper surface of described location-plate.
Further, described bearing locating shaft, in the font of falling T, makes the magnetic head being sheathed on described bearing locating shaft to be down in place.
Further, described mount pad is provided with a limited post, for limiting the movement travel of described magnetic head.
Further, described clamping unit also comprises: the slide block be connected with described clamp, the clamping cylinder be connected with described slide block and the first slide rail be located at above described mount pad, drive described slide block to move along described first slide rail by described clamping cylinder, and then drive the described clamp that is connected with described slide block can be close or away from described magnetic head.
Further, described clamping cylinder is located at the side of described mount pad, and described slide block is C font, and its opening part matches with described first slide rail, and its bottom is connected with described clamping cylinder, and its top is connected with described clamp.
Further, described detecting unit also comprises: the promotion cylinder be located at the second slide rail above described mount pad and be connected with described permanent magnet, promote described permanent magnet by described promotion cylinder to move along described second slide rail, make described permanent magnet can near or away from described magnetic head.
Further, described promotion cylinder is located at the below of described mount pad, and described mount pad is provided with a sliding tray run through, and the top of a connecting link upwards passes described sliding tray and is connected with described permanent magnet, and its bottom is connected with the output shaft of described promotion cylinder.
Whether further, described detecting unit also comprises: the detection fiber being installed in described mount pad side slidably, move for detecting described magnetic head.
Compared with prior art, the utility model has following beneficial effect:
By arranging the detecting unit including permanent magnet, this permanent magnet is installed on mount pad movably, when permanent magnet moves to the below of magnetic head, according to the principle of magnetic field two like magnetic poles repel each other, magnetic head is moved according to the opposite direction of permanent magnet direction of motion, to detect the moment of torsion of magnetic head bearing, and then judge whether magnetic head product meets requirement of dispatching from the factory.The magnetic head bearing torque of this kind of mode foreshortens to 1.5s from original 12s detection time, substantially increases detection efficiency, avoids the problem of the overlong time that magnetic head bearing torque detects in prior art.
Accompanying drawing explanation
Fig. 1 is the vertical view of magnetic head bearing torque pick-up unit of the present utility model.
Fig. 2 is the stereographic map of magnetic head bearing torque pick-up unit of the present utility model.
Fig. 3 is the assembling schematic diagram of magnetic head bearing torque pick-up unit of the present utility model and magnetic head.
Wherein, description of reference numerals is as follows:
100, magnetic head bearing torque pick-up unit; 1, mount pad; 11, bearing locating shaft; 13, limited post; 14, sliding tray; 15, location-plate; 16, sliding tray; 2, clamping unit; 21, clamp; 22, slide block; 23, clamping cylinder; 24, the first slide rail; 3, detecting unit; 31, permanent magnet; 32, the second slide rail; 33, cylinder is promoted; 331, connecting link; 34, detection fiber; 4, magnetic head; 41, magnetic head bearing; 42, magnetic head coil.
Embodiment
Below with reference to accompanying drawing, elaboration is further given to each embodiment of the present utility model.
Refer to Fig. 1 to Fig. 3, in one embodiment, a kind of magnetic head bearing torque pick-up unit 100 comprises: mount pad 1, clamping unit 2 and detecting unit 3.
Wherein, mount pad 1 is provided with a bearing locating shaft 11, for the magnetic head bearing 41 for magnetic head 4 thereon.
Clamping unit 2 comprises a clamp 21, and clamp 21 is installed on mount pad 1 movably, clamps magnetic head 4 by clamp 21 with coordinating of bearing locating shaft 11, positions magnetic head 4 to utilize a bearing head.
Detecting unit 3 comprises a permanent magnet 31, and permanent magnet 31 is installed on mount pad 1 movably, when permanent magnet 31 moves to the below of magnetic head 4, magnetic head 4 is moved, to detect the moment of torsion of magnetic head bearing 41 according to the opposite direction of permanent magnet 31 direction of motion.
By arranging the detecting unit 3 including permanent magnet 31, this permanent magnet 31 is installed on mount pad 1 movably, when permanent magnet 31 moves to the below of magnetic head 4, according to the principle of magnetic field two like magnetic poles repel each other, magnetic head 4 is moved according to the opposite direction of permanent magnet 31 direction of motion, to detect the moment of torsion of magnetic head bearing 41, and then judge whether magnetic head product meets requirement of dispatching from the factory.The magnetic head bearing torque of this kind of mode foreshortens to 1.5s from original 12s detection time, substantially increases detection efficiency, avoids the problem of the overlong time that magnetic head bearing torque detects in prior art.
Particularly, one location-plate 15 is fixed on the top of mount pad 1, bearing locating shaft 11 is fixed thereon, and is sheathed between the magnetic head 4 of bearing locating shaft 11 and location-plate 15 and keeps a gap, moves to the below of magnetic head 4 for permanent magnet 31 along the upper surface of location-plate 15.
Further, bearing locating shaft 11, in the font of falling T, makes the magnetic head 4 being sheathed on this bearing locating shaft 11 to be down in place, and to locate further magnetic head 4, improves the precision that magnetic head bearing 41 moment of torsion detects.
Further, mount pad 1 is provided with a limited post 13, for limiting the movement travel of magnetic head 4, that is when magnetic head 4 moves according to the opposite direction of permanent magnet 31 direction of motion, range of movement can not exceed the position at limited post 13 place, damages magnetic head 4 to avoid magnetic head bearing 41 to reverse excessively.
Clamping unit 2 also comprises: the slide block 22 be connected with clamp 21, the clamping cylinder 23 be connected with slide block 22 and the first slide rail 24 be located at above mount pad 1.Slide block 22 is driven to move along the first slide rail 24 by clamping cylinder 23, and then drive the clamp 21 that is connected with slide block 22 can be close or away from magnetic head 4, clamp 21 can be clamped by fitted bearing locating shaft 11 pairs of magnetic heads 4, be beneficial to bearing head and magnetic head 4 is located further.
Further, clamping cylinder 23 is located at the side of mount pad 1, slide block 22 is in C font, its opening part matches with the first slide rail 24, its bottom is connected with clamping cylinder 23, and its top is connected with clamp 21, and clamping cylinder 23 is clamped from the side of mount pad 1 magnetic head 4, be conducive to the volume of control head bearing torque pick-up unit 100, to reduce production cost.
Detecting unit 3 also comprises: the promotion cylinder 33 be located at the second slide rail 32 above mount pad 1 and be connected with permanent magnet 31, promote permanent magnet 31 by promotion cylinder 33 to move along the second slide rail 32, make permanent magnet 31 can near or away from magnetic head 4, according to the principle of magnetic field two like magnetic poles repel each other, and then make magnetic head 4 carry out the opposite direction contrary with the direction of motion of permanent magnet 31 with magnetic head bearing 41 for rotating shaft to move, to detect the moment of torsion of magnetic head bearing 41.
Further, promote the below that cylinder 33 is located at mount pad 1, mount pad 1 is provided with a sliding tray run through 14, the top of one connecting link 331 upwards passes sliding tray 14 and is connected with permanent magnet 31, its bottom is connected with the output shaft promoting cylinder 33, be conducive to the volume of control head bearing torque pick-up unit 100, to reduce production cost.Rotate by promoting cylinder 33 driver output axle, and then drive connecting link 331 moving linearly be connected with output shaft, thus make permanent magnet 31 moving linearly that is connected with connecting link 331 top and close or away from magnetic head 4.
Whether further, detecting unit 3 also comprises: the detection fiber 34 being installed in mount pad 1 side slidably, move for detecting magnetic head 4.Wherein, the side of mount pad 1 has a sliding tray 16, and this detection fiber 34 can slidably reciprocate in the length range of this sliding tray 16, by regulating neatly the position of detection fiber 34, to determine the optimum detection position of detection fiber 34.In debug phase before the moment of torsion starting magnetic head bearing 41 detects, first magnetic head bearing torque pick-up unit 100 detects qualified magnetic head product, by regulating the diverse location of detection fiber 34 in sliding tray 16, and according to the range of movement of magnetic head 4 and corresponding optical fiber output valve, can obtain best testing result, now the position of detection fiber 34 in sliding tray 16 is the optimum detection position of detection fiber 34.
Existing composition graphs 1 to Fig. 3, is explained as follows to the course of work of the magnetic head bearing torque pick-up unit 100 in the present embodiment.
(1), by hand magnetic head 4 is fixed on the bearing locating shaft 11 of mount pad 1, utilizes this bearing locating shaft 11 in the font of falling T, magnetic head 4 is down in place.
(2), utilize clamping cylinder 23 to drive slide block 22 to move, make the clamp 21 be connected with slide block 22 move and fitted bearing locating shaft 11 pairs of magnetic heads 4 clamp.
(3), utilize bearing head to push down the inner ring of magnetic head bearing 41, realize the further location to magnetic head 4.
(4), to magnetic head coil 42 be energized, make magnetic head coil 42 produce magnetic field, return clamping cylinder 23 in original position simultaneously.
(5), utilize and promote cylinder 33 and promote permanent magnet 31 moves to magnetic head 4 below along the upper surface of location-plate 15, whether recycling detection fiber 34 detects magnetic head 4 and moves, and if yes, then magnetic head 4 meets requirement of dispatching from the factory, otherwise magnetic head 4 is substandard product.
(6), return promotion cylinder 33 in original position, and take off bearing head, to take the magnetic head 4 be completed away.
Detected by the moment of torsion adopting the magnetic head bearing torque pick-up unit 100 in previous embodiment automatically to complete magnetic head bearing 41, detection time can be foreshortened to 1.5s, substantially increase detection efficiency, improve the qualification rate of magnetic head product, significantly reduce production cost.
Foregoing; be only preferred embodiment of the present utility model; not for limiting embodiment of the present utility model; those of ordinary skill in the art are according to central scope of the present utility model and spirit; can carry out corresponding flexible or amendment very easily, therefore protection domain of the present utility model should be as the criterion with the protection domain required by claims.
Claims (9)
1. a magnetic head bearing torque pick-up unit, is characterized in that, comprising:
Mount pad, which is provided with a bearing locating shaft, provided thereon for the magnetic head bearing holder (housing, cover) for magnetic head;
Clamping unit, comprises a clamp, and described clamp is installed on described mount pad movably, clamps described magnetic head by described clamp with coordinating of described bearing locating shaft, positions described magnetic head to utilize a bearing head; And
Detecting unit, comprise a permanent magnet, described permanent magnet is installed on described mount pad movably, when described permanent magnet moves to the below of described magnetic head, described magnetic head is moved according to the opposite direction of described permanent magnet direction of motion, to detect the moment of torsion of described magnetic head bearing.
2. magnetic head bearing torque pick-up unit as claimed in claim 1, it is characterized in that, one location-plate is fixed on the top of described mount pad, described bearing locating shaft is fixed thereon, be sheathed between the magnetic head of described bearing locating shaft and described location-plate and keep a gap, move to the below of described magnetic head for described permanent magnet along the upper surface of described location-plate.
3. magnetic head bearing torque pick-up unit as claimed in claim 1, is characterized in that, described bearing locating shaft, in the font of falling T, makes the magnetic head being sheathed on described bearing locating shaft to be down in place.
4. magnetic head bearing torque pick-up unit as claimed in claim 1, it is characterized in that, described mount pad is provided with a limited post, for limiting the movement travel of described magnetic head.
5. magnetic head bearing torque pick-up unit as claimed in claim 1, it is characterized in that, described clamping unit also comprises: the slide block be connected with described clamp, the clamping cylinder be connected with described slide block and the first slide rail be located at above described mount pad, drive described slide block to move along described first slide rail by described clamping cylinder, and then drive the described clamp that is connected with described slide block can be close or away from described magnetic head.
6. magnetic head bearing torque pick-up unit as claimed in claim 5, it is characterized in that, described clamping cylinder is located at the side of described mount pad, described slide block is C font, its opening part matches with described first slide rail, and its bottom is connected with described clamping cylinder, and its top is connected with described clamp.
7. magnetic head bearing torque pick-up unit as claimed in claim 1, it is characterized in that, described detecting unit also comprises: the promotion cylinder be located at the second slide rail above described mount pad and be connected with described permanent magnet, promote described permanent magnet by described promotion cylinder to move along described second slide rail, make described permanent magnet can near or away from described magnetic head.
8. magnetic head bearing torque pick-up unit as claimed in claim 7, it is characterized in that, described promotion cylinder is located at the below of described mount pad, described mount pad is provided with a sliding tray run through, the top of one connecting link upwards passes described sliding tray and is connected with described permanent magnet, and its bottom is connected with the output shaft of described promotion cylinder.
9. magnetic head bearing torque pick-up unit as claimed in claim 1, whether it is characterized in that, described detecting unit also comprises: the detection fiber being installed in described mount pad side slidably, move for detecting described magnetic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581093.1U CN204831662U (en) | 2015-08-04 | 2015-08-04 | Magnetic head bearing moment of torsion detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581093.1U CN204831662U (en) | 2015-08-04 | 2015-08-04 | Magnetic head bearing moment of torsion detection device |
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| Publication Number | Publication Date |
|---|---|
| CN204831662U true CN204831662U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520581093.1U Active CN204831662U (en) | 2015-08-04 | 2015-08-04 | Magnetic head bearing moment of torsion detection device |
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| CN (1) | CN204831662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543638A (en) * | 2016-06-28 | 2018-01-05 | 深圳长城开发科技股份有限公司 | Stannum plaster scribing knife pressure test device and its detection method based on foil gauge |
| CN108514997A (en) * | 2018-04-28 | 2018-09-11 | 苏州长城开发科技有限公司 | A kind of point glue equipment and its gluing process of magnetic head bearing cap |
-
2015
- 2015-08-04 CN CN201520581093.1U patent/CN204831662U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543638A (en) * | 2016-06-28 | 2018-01-05 | 深圳长城开发科技股份有限公司 | Stannum plaster scribing knife pressure test device and its detection method based on foil gauge |
| CN107543638B (en) * | 2016-06-28 | 2023-10-13 | 深圳长城开发科技股份有限公司 | Solder paste scraper pressure testing device based on strain gauge and detection method thereof |
| CN108514997A (en) * | 2018-04-28 | 2018-09-11 | 苏州长城开发科技有限公司 | A kind of point glue equipment and its gluing process of magnetic head bearing cap |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |