CN209755052U - Rotating shaft driving mechanism and clamping jig - Google Patents
Rotating shaft driving mechanism and clamping jig Download PDFInfo
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- CN209755052U CN209755052U CN201920139028.1U CN201920139028U CN209755052U CN 209755052 U CN209755052 U CN 209755052U CN 201920139028 U CN201920139028 U CN 201920139028U CN 209755052 U CN209755052 U CN 209755052U
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- slider
- sliding block
- rotating shaft
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- rotating
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Abstract
A rotating shaft driving mechanism is used for realizing butt joint of a second workpiece to a first workpiece and comprises a positioning component, a sliding block component and a rotating shaft, wherein the positioning component is used for positioning the first workpiece, the sliding block component is movably arranged on the positioning component and used for positioning the second workpiece, the rotating shaft comprises a first rotating part and a second rotating part extending out of the first rotating part, the rotating shaft is rotatably arranged on the positioning component, and the sliding block component is sleeved on the first rotating part and the second rotating part; when the rotating shaft is rotated, the first rotating part and the second rotating part on the rotating shaft respectively drive the sliding block component to move on the positioning component along a first direction and a second direction so as to butt the second workpiece and the first workpiece. Still relate to a clamping tool that adopts above-mentioned pivot actuating mechanism, reduced the step of operation in the actual production process through adopting this pivot actuating mechanism, also reduced manufacturing cost simultaneously.
Description
Technical Field
The utility model relates to an actuating mechanism especially relates to a pivot actuating mechanism and clamping tool.
Background
In the existing production line, in order to assemble different workpieces in the machining process, a method that a workpiece is assembled to another workpiece by driving of a rotating shaft is often used. However, in order to realize that the workpiece can move in multiple directions and a plurality of workpieces can be assembled at the same time, in the process of driving through the rotating shafts, in order to enable the workpiece to move in multiple directions, the workpieces need to be controlled through the rotating shafts independently.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a rotating shaft driving mechanism and a clamping fixture, which can drive a workpiece to move along multiple directions by a rotating shaft.
for effecting the butting of a second workpiece onto a first workpiece, the spindle drive mechanism comprising:
A positioning member for positioning the first workpiece;
The sliding block component is movably arranged on the positioning component and is used for positioning the second workpiece;
the rotating shaft comprises a first rotating part and a second rotating part extending out of the first rotating part, the rotating shaft is rotatably arranged on the positioning component, and the sliding block component is sleeved on the first rotating part and the second rotating part;
When the rotating shaft is rotated, the first rotating part and the second rotating part on the rotating shaft respectively drive the sliding block component to move on the positioning component along a first direction and a second direction so as to butt the second workpiece with the first workpiece.
In at least one aspect, the first rotating part is a cam;
When the first rotating part rotates, the distance between the first rotating part and the slider component along the first direction changes, so that the slider component is driven to move along the first direction.
in at least one aspect, the second rotating portion is a cam;
When the second rotating portion rotates, the distance between the second rotating portion and the slider member along the second direction changes, so as to drive the slider member to move along the second direction.
in at least one mode, a handle is sleeved on the rotating shaft;
When a second workpiece is butted to the first workpiece, the rotating shaft is driven to rotate by rotating the handle;
When the workpiece does not need to be butted, the handle is abutted against the positioning component so as to fix the rotating shaft.
In at least one embodiment, the slider member includes a first slider and a second slider, the first slider is sleeved on the first rotating portion, and the second slider is sleeved on the second rotating portion;
when the rotating shaft rotates, the first rotating part rotates to drive the first sliding block to move along the first direction;
When the rotating shaft rotates, the second rotating part rotates to drive the second sliding block to move along the second direction.
In at least one mode, the second sliding block is provided with an accommodating space, and the first sliding block is arranged in the accommodating space of the second sliding block;
when the second slide block moves along the second direction, the first slide block moves along the second direction along with the second slide block.
In at least one aspect, the first slider and the second slider are provided in two directions perpendicular to each other along the positioning member, respectively, so that the first slider and the second slider move in different directions.
in at least one embodiment, the slider member further includes a fixing plate and a plurality of elastic members, and both ends of the plurality of elastic members respectively abut against between the first slider and the second slider and between the second slider and the fixing plate.
in at least one mode, the positioning member includes a positioning plate and a base which are stacked, the rotating shaft is arranged on the positioning plate, and the fixing plate is arranged on the base.
A clamping jig comprises a jig body and a rotating shaft driving mechanism arranged on the jig body, wherein the rotating shaft driving mechanism is any one of the rotating shaft driving mechanisms.
the rotating shaft driving mechanism and the clamping jig drive the workpieces to move along different directions through the positioning component, the sliding block component and the rotating shaft. The positioning component is used for positioning a first workpiece, the sliding block component is movably arranged on the positioning component and used for positioning a second workpiece, the rotating shaft comprises a first rotating portion and a second rotating portion extending out of the first rotating portion, the rotating shaft is rotatably arranged on the positioning component, and the sliding block component is sleeved on the first rotating portion and the second rotating portion. When the rotating shaft is rotated, the rotating shaft drives the sliding block component to move on the positioning component so as to butt the second workpiece and the first workpiece. By adopting the rotating shaft driving mechanism and the clamping jig, the design that a plurality of rotating shafts are originally needed is changed into only one rotating shaft, so that the steps in the operation process are reduced, the structure is simplified, and the operation process is simple and convenient.
Drawings
Fig. 1 is a perspective view of a spindle drive mechanism.
Fig. 2 is a schematic view showing the arrangement of the first workpiece and the second workpiece of the rotating shaft driving mechanism.
Fig. 3 is an exploded view of the spindle drive mechanism.
Fig. 4 is a schematic view showing the connection of the first slider and the second slider with the rotating shaft in the rotating shaft driving mechanism.
fig. 5 is a sectional view of a first rotating portion of a rotating shaft in the rotating shaft driving mechanism.
Fig. 6 is a sectional view of a second rotating portion of the rotating shaft in the rotating shaft driving mechanism.
Fig. 7 is a sectional view of the first slider in the original state of the rotary shaft in the rotary shaft driving mechanism.
Fig. 8 is a sectional view of the second slider shown in fig. 7.
Fig. 9 is a sectional view of the first slider when the rotary shaft of the rotary shaft driving mechanism rotates to a predetermined angle.
Fig. 10 is a sectional view of the second slider shown in fig. 9.
Fig. 11 is a sectional view of the first slider when the rotary shaft is rotated to another predetermined angle in the rotary shaft driving mechanism shown in fig. 10.
Fig. 12 is a sectional view of the second slider shown in fig. 11.
description of the main elements
Rotating shaft driving mechanism 100
positioning member 10
positioning plate 11
first via hole 111
First opening 112
Base 12
Second opening 121
Slider member 20
First slider 21
Second through hole 211
first connection portion 212
Second slider 22
Abutting part 221
Upper part A
Lower part B
Second connecting portion 222
Accommodating space 223
Third through hole 224
fixing plate 23
Groove 231
Elastic member 24
Pin 25
Rotating shaft 30
Cutting face 301
First rotating part 31
Second rotating part 32
Handle 33
First workpiece 200
Second workpiece 300
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 and fig. 2, in the present embodiment, a clamping fixture (not shown) is provided, and the clamping fixture includes a fixture body (not shown) and a rotating shaft driving mechanism 100 disposed on the fixture body. The spindle driving mechanism 100 is configured to drive a plurality of second workpieces 300 to move in different directions, so as to couple the second workpieces 300 to the first workpiece 200.
referring to fig. 1, 2 and 3, the shaft driving mechanism 100 includes a positioning member 10, a slider member 20 and a shaft 30. The positioning member 10 is used for positioning a first workpiece 200, and the slider member is movably disposed on the positioning member 10 and used for positioning a second workpiece 300. The rotating shaft 30 includes a first rotating portion 31 and a second rotating portion 32 extending from the first rotating portion 31, the rotating shaft 30 is movably disposed on the positioning member 10, and the slider member 20 is sleeved on the first rotating portion 31 and the second rotating portion 32.
When the rotating shaft 30 is rotated, the first rotating portion 31 and the second rotating portion 32 of the rotating shaft 30 respectively drive the slider member 20 to move on the positioning member 10 along a first direction and a second direction, so as to butt the second workpiece 300 and the first workpiece 200.
Referring to fig. 1 and 3, in some embodiments, in order to better achieve the purpose of driving a plurality of workpieces to run in different directions, the positioning member 10 further includes a positioning plate 11 and a base 12 which are stacked. In the present embodiment, the positioning plate 11 is disposed on the base 12, and the positioning plate 11 and the base 12 are substantially rectangular parallelepiped. The rotating shaft 30 is disposed on the positioning plate 11 and substantially parallel to the width direction of the positioning plate 11. The slider member 20 and the shaft 30 are located at the same end of the positioning member 10.
A first through hole 111 and a first opening 112 are formed in the positioning plate 11, the first through hole 111 is formed at a position close to a wide edge on the left side of the positioning plate 11, and the first opening 112 is formed at the wide edge on the left side of the positioning plate 11. The base 12 also has a second opening 121 formed on the left side of the base, and the first through hole 111, the first opening 112 and the second opening 121 are used for disposing the slider member 20, and the rotating shaft 30 passes through the first through hole 111.
It is understood that, in other embodiments, the positioning plate 11 and the base 12 are not limited to the above shapes, and the positioning plate 11 and the base 12 may be replaced with other members having equivalent functions or effects. The first through hole 111, the first opening 112 and the second opening 121 of the positioning plate 11 and the base 12 can be changed in position, and the slider member 20 and the rotating shaft 30 can be changed in position at other positions of the positioning plate 11 and the base 12.
Referring to fig. 1, 3 and 4, the slider member 20 includes a first slider 21 and a second slider 22. In this embodiment, the first slider 21 is substantially a square-shaped mechanism, the first slider 21 is opened with a second through hole 211, and the first slider 21 is further provided with a first connecting portion 212. The second slider 22 includes a supporting portion 221 and a second connecting portion 222, and the first supporting portion 221 and the second connecting portion 222 are integrally formed. The supporting portion 221 is substantially L-shaped, and the second connecting portion 222 has a receiving space 223 and a third through hole 224. The first slider 21 is disposed inside the receiving space 223 and the second through hole 211 and the third through hole 224 are aligned. The first connecting portion 212 is fixed to the second connecting portion 222 by a pin 25 to fix the first slider 21 and the second slider 22 together. When the second slider 22 moves, the first slider 21 disposed in the receiving space 223 of the second slider 22 also moves along with the second slider 22.
Referring to fig. 1 and fig. 3, the first connecting portion 212 of the first slider 21 and the second connecting portion 222 of the second slider 22 are received in the first through hole 111 of the positioning plate 11. The upper portion a of the abutting portion 221 of the second slider 22 is received in the first opening 112 of the positioning plate 11. The first slider 21 is disposed along the Z direction of the positioning plate 11, and the second slider 22 is disposed along the X direction of the positioning plate 11, so that the first slider 21 and the second slider 22 can move in different directions.
Referring to fig. 1 and 3, the slider member 20 further includes a fixing plate 23 having a groove 231 and a plurality of elastic members 24, and further, the elastic members 24 are springs. The fixing plate 23 is disposed at the second opening 121 of the base 12, the groove 231 faces away from the base 12, and the lower portion B of the supporting portion 221 of the second slider 22 protrudes into the groove 231. Specifically, in the present embodiment, one end of each of the 4 elastic pieces 24 is fixed to the bottom surface of the first slider 21, and the other end abuts against the second slider 22. The 2 elastic members 24 are disposed in the groove 231 of the fixing plate 23, one end of each elastic member 24 is fixed to the lower portion B of the abutting portion 221, and the other end of each elastic member 24 abuts against the left side surface of the fixing plate 23.
In the present embodiment, the workpiece is assembled using two sets of the first slider 21 and the second slider 22. It is understood that in other embodiments, 1 group, 3 groups or other numbers of the first slide block 21 and the second slide block 22 can be used according to the workpieces to be assembled, so as to achieve the purpose of multi-assembling multiple workpieces. The elastic members 24 may be replaced with other elastic members having the same function or effect and the number may be changed according to actual needs. The first slider 21 and the second slider 22 may be provided separately and the shape is not limited thereto.
Referring to fig. 1, 3 and 4, the rotating shaft 30 is substantially a cylinder, and a handle 33 is disposed at one end of the rotating shaft 30. When the second workpiece 300 is butted to the first workpiece 200, the rotating shaft 30 is driven to rotate by rotating the handle 33. When the workpiece does not need to be butted, the handle 33 abuts against the positioning member 10 to fix the rotating shaft 30 and prevent the rotating shaft 30 from rotating.
The rotation shaft 30 includes a first rotation portion 31 and a second rotation portion 32 extending from the first rotation portion 31. In the present embodiment, the rotating shaft 30 is divided into a plurality of first rotating portions 31 and a plurality of second rotating portions 32, and the plurality of first rotating portions 31 and the plurality of second rotating portions 32 are provided at intervals. The rotation shaft 30 passes through the second through hole 211 and the third through hole 224 of the first slider 21 and the second slider 22.
Referring to fig. 3 and 5, the first rotating portion 31 of the rotating shaft 30 is a cam. In the present embodiment, the cross section of the first rotating portion 31 is substantially a cut circle. I.e. a circular cross-section is partially cut so that the boundary of the circular cross-section is a closed curve consisting of a straight line and a circular arc. The distance from the center of the circular cross section to the cutting surface 301 is smaller than the radius of the circle, and the thickness of the cut surface 301 is smaller than the radius of the circle. The first slider 21 is sleeved on the surface of the first rotating portion 31. When the rotating shaft 30 rotates, the first rotating portion 31 can drive the first sliding block 21 to move along the Z direction.
referring to fig. 3 and 6, the second rotating portion 32 of the rotating shaft 30 is also a cam. In the present embodiment, the cross section of the second rotating portion 32 is approximately a cut sector. I.e. a sector-shaped cross-section is cut partially so that the arc length of the sector-shaped boundary is formed by a straight line and a circular arc. The distance from the center of the fan to the cutting surface 301 is smaller than the distance from the center of the fan to the arc line. The second slider 22 is sleeved on the surface of the second rotating portion 32. When the rotating shaft 30 rotates, the second rotating portion 32 can drive the second slider 22 to move along the X direction.
Referring to fig. 3, the cutting surface 301 of the first rotating portion 31 and the cutting surface 301 of the second rotating portion 32 are coplanar. That is, the cutting surface 301 of the first rotating portion 31 and the cutting surface 301 of the second rotating portion 32 can be obtained directly by cutting on the rotating shaft 30.
It is understood that in other embodiments, the first rotating part 31 and the second rotating part 32 can be replaced by other shaped cams, and the replaced cams can achieve the same effect or function in the present embodiment, so as to achieve the purpose of moving the first slider 21 and the second slider 22.
Referring to fig. 2, the first workpiece 200 is disposed on the positioning plate 11, and the second workpiece 300 is disposed on the first sliding block 21. To butt-joint the second workpiece 300 to the first workpiece 200, the slider member 20 is moved by rotating the rotary shaft 30 to butt-joint the workpieces.
Referring to fig. 1, 7 and 8, when the handle 33 is located at the position of fig. 1, that is, the handle 33 is located at the right side of the rotating shaft 30, the cutting surface 301 of the rotating shaft 30 is disposed upward, and the cutting surfaces 301 of the first rotating portion 31 and the second rotating portion 32 are both disposed upward. An arc surface (not shown) opposite to the cutting surface 301 of the first rotating portion 31 is tangent to the first slider 21, and an arc surface on the left side of the first rotating portion 31 is also tangent to the first slider 21. The arc surface of the second rotating part 32 connected with the cutting surface 301 is tangent to the second slider 22. At this time, the elastic member 24 provided on the first slider 21 is compressed by a predetermined length, and the elastic member 24 provided on the second slider 22 is compressed by a predetermined length. The first rotating portion 31 of the rotating shaft 30 abuts against the lower left side of the first slider 21, and the second rotating portion 32 of the rotating shaft 30 abuts against the upper right end of the second slider. The first workpiece 200 and the second workpiece 300 have a predetermined distance in the Z-direction and the X-direction, respectively.
When the rotating shaft 30 is rotated by 135 ° in the counterclockwise direction through the handle 33 on the basis of fig. 1, please refer to fig. 9 and 10, the cutting surface 301 on the rotating shaft 30 faces downward to the left, and the arc surface of the first rotating portion 31 is tangent to the first slider 21. The elastic member 24 disposed on the first slider 21 keeps a state before rotation, the second rotating portion 32 is changed from a state in which a previous arc surface is tangent to the right end surface of the second slider 22 to a state in which the arc surface is not in contact with the right end surface of the second slider 22, the elastic member 24 disposed on the second slider 22 drives the second slider 22 to move leftward by the elastic force of the elastic member 24 compressed by a predetermined length due to the decrease of the distance between the second rotating portion 32 and the right side of the second slider 22, and meanwhile, the second slider 22 drives the first slider 21 to move leftward, and the first slider 21 abuts against the right side of the first slider 21. The first workpiece 200 and the second workpiece 300 are butted in the X direction.
When the rotating shaft 30 is rotated by 45 ° in the counterclockwise direction through the handle 33 after being rotated by 135 °, please refer to fig. 11 and 12, in which the cutting surface 301 of the rotating shaft 30 faces downward. The first rotating portion 31 is brought into contact with the lower end surface of the first slider 21 from the tangent of the previous arc surface to the contact of the cutting surface 301 with the lower end surface of the first slider 21, the distance between the first rotating portion 31 and the lower end of the first slider 21 is reduced by the elastic member 24 provided on the first slider 21, the first slider 21 is moved upward by the elastic member 24 provided on the first slider 21, which is compressed by a predetermined length, and the elastic member 24 provided on the second slider 22 is held in a state between them. So that the first workpiece 200 and the second workpiece 300 are butted in the Z direction.
After the rotation shaft 30 is rotated by 180 ° in the counterclockwise direction from the initial position, the first and second rotating portions 31 and 32 move the first and second sliders 21 and 22 by changing the distance between the first and second sliders 21 and 22. When the rotating shaft 30 is rotated in the reverse direction to return to the original position, the first slider 21 and the second slider 22 and the elastic member 24 connected to the first slider 21 and the second slider 22 also return to the original position.
It is understood that the rotating shaft 30 can also drive the first slide block 21 and the second slide block 22 to move in a clockwise direction. Accordingly, the first rotating portion 31 and the second rotating portion 32 on the rotating shaft 30 are changed. The angle of rotation is not limited to this, and may be changed according to the shapes of the first rotating portion 31 and the second rotating portion 32, but the distances between the first rotating portion 31 and the second rotating portion 32 and the first slider 21 and the second slider 22 are changed.
To sum up, the utility model discloses provide pivot actuating mechanism 100 and clamping tool in the embodiment and simplified original actuating mechanism's structure. Meanwhile, only one rotating shaft 30 is needed to drive the plurality of sets of the first sliding blocks 21 and the second sliding blocks 22 to move in different directions. The cost in the production and assembly is saved, the manual operation is simple, the fool-proof function is realized, and the errors in the operation process are reduced.
In addition, those skilled in the art should recognize that the above embodiments are illustrative only, and not limiting, and that suitable modifications and variations to the above embodiments are within the spirit and scope of the invention as claimed.
Claims (10)
1. A spindle drive mechanism for effecting the butting of a second workpiece to a first workpiece, characterized by: the pivot actuating mechanism includes:
A positioning member for positioning the first workpiece;
The sliding block component is movably arranged on the positioning component and is used for positioning the second workpiece;
The rotating shaft comprises a first rotating part and a second rotating part extending out of the first rotating part, the rotating shaft is rotatably arranged on the positioning component, and the sliding block component is sleeved on the first rotating part and the second rotating part;
When the rotating shaft is rotated, the first rotating part and the second rotating part on the rotating shaft respectively drive the sliding block component to move on the positioning component along a first direction and a second direction so as to butt the second workpiece with the first workpiece.
2. the spindle drive mechanism according to claim 1, wherein: the first rotating part is a cam;
When the first rotating part rotates, the distance between the first rotating part and the slider component along the first direction changes, so that the slider component is driven to move along the first direction.
3. the spindle drive mechanism according to claim 2, wherein: the second rotating part is a cam;
When the second rotating portion rotates, the distance between the second rotating portion and the slider member along the second direction changes, so as to drive the slider member to move along the second direction.
4. The spindle drive mechanism according to claim 3, wherein: a handle is sleeved on the rotating shaft;
When a second workpiece is butted to the first workpiece, the rotating shaft is driven to rotate by rotating the handle;
When the workpiece does not need to be butted, the handle is abutted against the positioning component so as to fix the rotating shaft.
5. The spindle drive mechanism according to claim 1, wherein: the sliding block component comprises a first sliding block and a second sliding block, the first sliding block is sleeved on the first rotating part, and the second sliding block is sleeved on the second rotating part;
When the rotating shaft rotates, the first rotating part rotates to drive the first sliding block to move along the first direction;
When the rotating shaft rotates, the second rotating part rotates to drive the second sliding block to move along the second direction.
6. The spindle drive mechanism according to claim 5, wherein: the second sliding block is provided with an accommodating space, and the first sliding block is arranged in the accommodating space of the second sliding block;
When the second slide block moves along the second direction, the first slide block moves along the second direction along with the second slide block.
7. The spindle drive mechanism according to claim 5, wherein: the first slider and the second slider are respectively arranged along two mutually perpendicular directions of the positioning component, so that the first slider and the second slider move along different directions.
8. The spindle drive mechanism according to claim 5, wherein: the sliding block component further comprises a fixing plate and a plurality of elastic pieces, and two ends of the elastic pieces are respectively abutted between the first sliding block and the second sliding block and between the second sliding block and the fixing plate.
9. The spindle drive mechanism according to claim 8, wherein: the positioning component comprises a positioning plate and a base which are arranged in a stacked mode, the rotating shaft is arranged on the positioning plate, and the fixing plate is arranged on the base.
10. The utility model provides a clamping tool, includes the tool body and locates pivot actuating mechanism on the tool body, its characterized in that: the spindle driving mechanism is the spindle driving mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920139028.1U CN209755052U (en) | 2019-01-25 | 2019-01-25 | Rotating shaft driving mechanism and clamping jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920139028.1U CN209755052U (en) | 2019-01-25 | 2019-01-25 | Rotating shaft driving mechanism and clamping jig |
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| Publication Number | Publication Date |
|---|---|
| CN209755052U true CN209755052U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920139028.1U Active CN209755052U (en) | 2019-01-25 | 2019-01-25 | Rotating shaft driving mechanism and clamping jig |
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| CN (1) | CN209755052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800340A (en) * | 2022-06-06 | 2022-07-29 | 博众精工科技股份有限公司 | Assembling device |
-
2019
- 2019-01-25 CN CN201920139028.1U patent/CN209755052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800340A (en) * | 2022-06-06 | 2022-07-29 | 博众精工科技股份有限公司 | Assembling device |
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Address after: 458000 north of Qi Qi Road, Hebi, Henan Province, north of Wei Six Road North. Patentee after: Fulian Technology (Hebi) Co.,Ltd. Address before: 458000 north of Qi Qi Road, Hebi, Henan Province, north of Wei Six Road North. Patentee before: Hebi Yuzhan Precision Technology Co.,Ltd. |