CN108081215B - Manual drilling, sawing and twisting integrated machine - Google Patents
Manual drilling, sawing and twisting integrated machine Download PDFInfo
- Publication number
- CN108081215B CN108081215B CN201810023631.3A CN201810023631A CN108081215B CN 108081215 B CN108081215 B CN 108081215B CN 201810023631 A CN201810023631 A CN 201810023631A CN 108081215 B CN108081215 B CN 108081215B
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- twisting
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- sawing
- drill bit
- integrated machine
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- 238000005553 drilling Methods 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F1/00—Combination or multi-purpose hand tools
Abstract
The invention discloses a manual drilling, sawing and twisting integrated machine, comprises a planetary gear assembly, a drill bit, a twisting head and a circular saw blade; the planetary gear assembly comprises a sun gear, a planet carrier and an annular gear, and the annular gear is arranged on the inner annular wall of the saw blade; the planet carrier is positioned at the upper end side of the annular gear and connected between the sun gear and the planet gears, and the torsion head is connected with the planet carrier; the drill bit is located at the lower end side of the inner gear ring and connected with the sun gear. According to the invention, the saw blade, the drill bit and the torsion head are reasonably arranged on the planetary gear, and are integrated, so that a plurality of different operation modes with high-efficiency transmission ratios can be realized, different functions can be used by simply switching and rotating, and the planetary gear has the advantages of strong practicability, compact structure and good and smooth tool use experience.
Description
Technical Field
The invention relates to the technical field of manual tools, in particular to a manual drilling, sawing and twisting integrated machine.
Background
The manual tool has the advantages of convenience, cheapness and flexibility, and is widely applied in daily life, but the manual tool is mostly single-piece and single-purpose at present, and in order to meet the use requirement, a plurality of tools such as a hand drill, a saw and a pair of pliers are usually required to be equipped, and the manual tool is required to be switched back and forth under various tools in many cases, so that the operation is hindered, and the manual tool is inconvenient to carry and store and easy to scatter and lose.
At present, the hand drill is driven by a bevel gear, torque applied by a hand is transmitted to a drill bit, then the drill bit is pressed down, and the tip of the drill bit drills an object, so that drilling is realized; the manual saw moves back and forth at a certain angle by applying pressure to the saw, and cuts an object by the saw teeth on the saw blade; the hand pliers are used for obtaining larger torque and clamping force by utilizing the lever principle, so that the object is twisted off or bent.
The manual tool has the defects of low efficiency, single mode and the like, and cannot meet the diversified demands of people at present.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a manual drilling, sawing and twisting integrated machine which fuses drilling, sawing and twisting together.
In order to solve the technical problems, the invention provides a manual drilling, sawing and twisting integrated machine which comprises a planetary gear assembly, a drill bit, a twisting head and a circular saw blade, wherein the outer annular wall of the saw blade is provided with saw teeth;
the planetary gear assembly comprises a sun gear, a plurality of planetary gears arranged around the sun gear, a planetary carrier connected with the planetary gears and an inner gear ring arranged outside the planetary gears, wherein the inner gear ring is arranged on the inner annular wall of the saw blade, and the sun gear, the planetary gears and the inner gear ring are sequentially connected from inside to outside; the planet carrier is positioned at the upper end side of the annular gear and connected between the sun gear and the planet gears, and the torsion head is connected with the planet carrier; the drill bit is located at the lower end side of the inner gear ring and connected with the sun gear.
Preferably, the rotary device further comprises a first rotary handle which is detachably and eccentrically connected to the torsion head.
Preferably, the torsion head is provided with a torsion hole or a U-shaped or V-shaped torsion groove for positioning the workpiece, and the inner wall of the torsion hole or the torsion groove is stepped.
The saw blade is characterized by further comprising a second rotating handle, wherein the second rotating handle is connected to the saw face of the saw blade or the end face of the inner gear ring through a buckling structure.
As a preferred scheme, the buckling structure comprises a buckle and a clamping groove for assembling the buckle, the clamping groove is arranged on the end face of the inner gear ring or on the saw face of the saw blade, the buckle is fixedly connected with one end of the second rotating handle, and the other end of the second rotating handle is a free end.
As an optimal scheme, a cylindrical fixed shaft is arranged between the drill bit and the sun gear, the sun gear is fixedly connected with the fixed shaft, the drill bit is sleeved on the fixed shaft, and a circumferential positioning structure is arranged between the drill bit and the fixed shaft.
Preferably, the circumferential positioning structure comprises a positioning key and a key groove for assembling the positioning key, and the key groove is arranged on the outer wall of the drill bit and the inner wall of the fixed shaft.
Preferably, the device further comprises an auxiliary rod, an auxiliary hole is formed in the fixed shaft, and the auxiliary rod passes through the auxiliary Kong Hengguan and the fixed shaft.
Preferably, the inner gear ring is provided with an axial positioning structure for limiting the axial displacement of the planet gears.
Preferably, the axial positioning structure comprises a positioning ring arranged on the end face of the annular gear, and the inner diameter of the positioning ring is smaller than that of the annular gear.
Compared with the prior art, the manual drilling, sawing and twisting integrated machine provided by the invention has the beneficial effects that: according to the invention, the planetary gear is used as a transmission mechanism, the saw blade, the drill bit and the torsion head are reasonably arranged on the planetary gear, and are integrated, so that a plurality of different operation modes with high-efficiency transmission ratios can be realized, corresponding excellent performances are kept, the planetary gear is arranged in a modularized manner, different functions can be used by simply switching and rotating, the planetary gear has the advantages of strong practicability, compact structure and good and smooth tool use experience.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a manual drilling, sawing and twisting integrated machine according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of another view of fig. 1.
Fig. 3 is an exploded view of a manual drilling, sawing and twisting integrated machine according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a planetary gear assembly of a manual drilling, sawing and twisting integrated machine according to an embodiment of the present invention.
FIG. 5 shows a manual drill saw twist according to an embodiment of the present invention the saw blade and the annular gear of the integrated machine are structurally schematic.
Fig. 6 is a schematic structural diagram of a twisting head and a fixing base of a manual drilling, sawing and twisting integrated machine according to an embodiment of the invention.
Fig. 7 is a schematic diagram of the structure of a drill bit, a fixed shaft and a sun gear of the manual drilling, sawing and twisting integrated machine according to the embodiment of the invention.
Fig. 8 is a schematic diagram of the internal structure of a drill bit and a fixed shaft of a manual drilling, sawing and twisting integrated machine according to an embodiment of the invention.
In the figure: 1. a saw blade; 2. a drill bit; 3. twisting the head; 4. a sun gear; 5. a planet wheel; 6. an inner gear ring; 7. a planet carrier; 8. a first rotary handle; 9. a second rotary handle; 10. a fixed shaft; 11. a positioning ring; 12. a fixing seat; 13. a bolt; 14. a screw; 15. an auxiliary hole; 16. an auxiliary lever; 17. a buckle; 18. a clamping groove; 19. a positioning key; 20. a keyway.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, in the description of the present invention, it should be noted that the "first" and "second" described in the embodiments are for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 8, a preferred embodiment of the present invention provides a manual drilling, sawing and twisting integrated machine, which comprises a planetary gear assembly, a drill bit 2, a twisting head 3 and a circular saw blade 1, wherein saw teeth are arranged on the outer annular wall of the saw blade 1; the planetary gear assembly comprises a sun gear 4, a plurality of planetary gears 5 arranged around the sun gear 4, a planetary carrier 7 connected with the planetary gears 5 and an inner gear ring 6 arranged outside the planetary gears 5, wherein the inner gear ring 6 is arranged on the inner annular wall of the saw blade 1, and the sun gear 4, the planetary gears 5 and the inner gear ring 6 are sequentially connected from inside to outside; the planet carrier 7 is positioned at the upper end side of the annular gear 6, the planet carrier 7 is connected between the sun gear 4 and the planet gears 5, and the torsion head 3 is connected with the planet carrier 7; the drill bit 2 is located at the lower end side of the inner gear ring 6, and the drill bit 2 is connected with the sun gear 4.
According to the manual drilling, sawing and twisting integrated machine based on the technical characteristics, the planetary gear is used as a transmission mechanism, the saw blade 1, the drill bit 2 and the twisting head 3 are reasonably arranged on the planetary gear and are integrated, so that the manual drilling, sawing and twisting integrated machine has three functions of sawing, drilling and twisting, various different operation modes with high-efficiency transmission ratios can be realized, the corresponding excellent performance is kept, the modularized arrangement is realized, different functions can be used by simply switching and rotating, the device has strong practicability and compact structure, and good and smooth tool use experience is realized.
As shown in fig. 1 to 3, the manual drilling, sawing and twisting integrated machine further comprises a first rotating handle 8, the first rotating handle 8 is detachably and eccentrically connected to the twisting head 3, so that the twisting head 3 is convenient to rotate to drive the planetary gears 5 to rotate, rotation of the drill bit 2 on the sun gear 4 or the saw blade 1 on the inner gear ring 6 is achieved, the first rotating handle 8 is eccentrically connected to the twisting head 3 through a screw 14, and when the manual drilling, sawing and twisting integrated machine needs to use a twisting function, the first rotating handle 8 can be detached, so that normal use is not affected, and in the embodiment, the twisting head 3 is arranged on the planet carrier 5 through a fixing seat 12, so that the integral structure is more stable.
Further, as shown in fig. 6, the torsion head 3 is provided with a torsion hole for positioning a workpiece or a torsion groove in a U shape or a V shape, and the inner wall of the torsion hole or the torsion groove is in a step shape to twist off or bend rod-shaped objects with different pipe diameters, so that the application range is wider.
Further, the manual drilling, sawing and twisting integrated machine further comprises a second rotating handle 9, the ring gear 6 is convenient to rotate, the rotation of the drill bit 2 on the sun gear 4 or the rotation of the torsion head 3 on the planet carrier 7 is achieved, the second rotating handle 9 is detachably connected to the saw face of the saw blade 1 or the end face of the ring gear 6 through a buckling structure, and when the manual drilling, sawing and twisting integrated machine needs to use a sawing function, the second rotating handle 9 can be detached, so that normal use is not affected.
As shown in fig. 2 and 5, the fastening structure includes a fastener 17 and a clamping groove 18 for assembling the fastener 17, so as to realize the detachable function of the second rotating handle 9, the clamping groove 18 is arranged on the end face of the ring gear 6 or on the saw face of the saw blade 1, the fastener 17 is connected with one end of the second rotating handle 9 through a screw 14, the other end of the second rotating handle 9 is a free end, so that the second rotating handle 9 drives the ring gear 6 to rotate, as shown in fig. 5, in this embodiment, the saw blade 1 preferably adopts a left and right tooth saw blade, the cutting speed is high, the grinding is relatively simple, and the fastening structure is suitable for cutting and sawing various soft and hard solid wood profiles and density boards, multi-layer boards, shaving boards and the like.
As shown in fig. 7 and 8, a cylindrical fixing shaft 10 is disposed between the drill bit 2 and the sun gear 4, the sun gear 4 is fixedly connected with the fixing shaft 10, the drill bit 2 is detachably sleeved on the fixing shaft 10, so that the fixing shaft 10 rotates and drives the sun gear 4 to rotate, the saw blade 1 on the inner gear ring 6 or the torsion head 3 on the planet carrier 7 is realized, when the manual drilling and sawing and twisting integrated machine needs to use a drilling function, the drill bit 2 can be sleeved and installed, normal use of the drilling function is not affected, a circumferential positioning structure is disposed between the drill bit 2 and the fixing shaft 10, and in the drilling process, the fixing shaft 10 can drive the drill bit 2 to rotate, and drilling of an object is realized.
Further, the circumferential positioning structure includes a positioning key 19 and a key slot 20 for assembling the positioning key 19, where the key slot 20 is disposed on an outer wall of the drill bit 2 and an inner wall of the fixed shaft 10, and has a simple structure, and is convenient for quick assembly and disassembly between the fixed shaft 10 and the drill bit 2 while ensuring a circumferential positioning function between the fixed shaft 10 and the drill bit 2, and in this embodiment, the positioning key 19 is a flat key.
As shown in fig. 4, the inner gear ring 6 is provided with an axial positioning structure for limiting the axial displacement of the planet gears 5, so that the inner gear ring 6 and the planet gears 5 are positioned, and meanwhile, the assembly of the planetary gear assembly is facilitated.
Further, the axial positioning structure comprises a positioning ring 11 arranged on the end face of the inner gear ring 6, the inner diameter of the positioning ring 11 is smaller than the inner diameter of the inner gear ring 6, the positioning ring 11 can clamp and position the planet gears 5 relative to the protruding part of the inner wall of the inner gear ring 6, the axial positioning of the planetary gear assembly is implemented, and the positioning ring 11 is detachably arranged on the end face of the inner gear ring 6 through bolts 13, so that the planetary gear assembly can be conveniently disassembled and assembled.
As shown in fig. 2, the fixing shaft 10 is further provided with an auxiliary rod 16, the fixing shaft 10 is provided with an auxiliary hole 15 through which the auxiliary rod 16 transversely penetrates, and when the manual drilling, sawing and twisting integrated machine needs to use the fixing shaft 10 to perform sawing or twisting functions, the auxiliary rod 16 can be inserted into the auxiliary hole 15 on the fixing shaft 10, and the fixing shaft 10 is driven to rotate by using the auxiliary rod 16, so that the purpose of saving manpower is achieved.
The manual drilling, sawing and twisting integrated machine provided by the embodiment of the invention has three functions of sawing, drilling and twisting, and has six use modes, and the use process is as follows:
drilling: (1) In a high-speed mode, the drill bit 2 is aligned with a position to be drilled, is perpendicular to a drilling plane, the second rotary handle 9 is tightly held and vertically pressed down, and the first rotary handle 8 is rotated at uniform speed, so that the drill bit 2 rotates rapidly and is suitable for objects with softer textures; (2) A strong pressing mode, in which the first rotating handle 8 is pressed down vertically, the second rotating handle 9 is rotated, the object is drilled in a labor-saving mode, the drilling machine is suitable for objects with harder textures,
sawing function: (1) An inertia mode, wherein the drill bit 2 is detached from the second rotating handle 9, the saw blade 1 coincides with a sawing path, the fixed shaft 10 is gripped, the first rotating handle 8 is rotated to start idling, the saw blade 1 is kept rotating and slowly pressed down after a certain speed is reached, objects are cut, and sawing is performed at a proper depth and a proper pushing speed; (2) In the strong mode, when the object with a harder texture or being difficult to cut is encountered, the first rotating handle 8 can be held down to rotate the fixed shaft 10 in the opposite direction for sawing.
Torsion function: (1) A push-pull mode, wherein the drill bit 2 is detached from the first rotating handle 8, an object is placed in a groove of the torsion head 3 to be clamped, the fixed shaft 10 is held, the second rotating handle 9 is pushed or pulled, and a twisted-off or twisted couple is applied to the object; (2) In the rotation mode, an object is placed in the groove of the torsion head 3 to be clamped, the second rotating handle 9 is held still, the fixed shaft 10 is rotated, and a twisted or bent couple is applied to the object.
The manual drilling, sawing and twisting integrated machine provided by the embodiment of the invention has the following advantages: (1) The structure is compact, the planetary gear assembly is taken as a main body, and components with different functions are arranged on the front and rear peripheries of the planetary gear assembly, so that the structure is simple, and the manufacturing cost is reduced; (2) The gear ratio is reasonable and efficient, three different gear ratios are provided in total, and the gear ratios are obtained by correspondingly fixing the first rotary handle 8, the second rotary handle 9 or the fixed shaft 10 and rotating other parts; (3) The first rotary handle 8, the second rotary handle 9 or the drill bit 2 are arranged in a modularized mode, and are assembled and disassembled according to the requirement of operation; (4) The multifunctional multi-mode has three functions and six use modes, has stronger applicability, the operation is flexibly switched according to the situation, so that the effect of twice the effort is achieved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The manual drilling, sawing and twisting integrated machine is characterized by comprising a planetary gear assembly, a drill bit, a twisting head and a circular saw blade, wherein saw teeth are arranged on the outer annular wall of the saw blade;
the planetary gear assembly comprises a sun gear, a plurality of planetary gears arranged around the sun gear, a planetary carrier connected with the planetary gears and an inner gear ring arranged outside the planetary gears, wherein the inner gear ring is arranged on the inner annular wall of the saw blade, and the sun gear, the planetary gears and the inner gear ring are sequentially connected from inside to outside; the planet carrier is positioned at the upper end side of the annular gear and connected between the sun gear and the planet gears, and the torsion head is connected with the planet carrier; the drill bit is positioned at the lower end side of the annular gear and is connected with the sun gear;
a cylindrical fixed shaft is arranged between the drill bit and the sun gear, the sun gear is fixedly connected with the fixed shaft, the drill bit is sleeved on the fixed shaft, and a circumferential positioning structure is arranged between the drill bit and the fixed shaft;
the inner gear ring is provided with an axial positioning structure for limiting the axial displacement of the planet gear.
2. The manual drilling, sawing and twisting integrated machine according to claim 1 further comprising a first rotary handle, said first rotary handle being removably and eccentrically connected to said twisting head.
3. The manual drilling, sawing and twisting integrated machine according to claim 2, wherein the twisting head is provided with a twisting hole or a U-shaped or V-shaped twisting groove for positioning a workpiece, and the inner wall of the twisting hole or the twisting groove is stepped.
4. A manual drilling, sawing and twisting integrated machine according to any one of claims 1 to 3 further comprising a second rotary handle connected to the saw face of the saw blade or to the end face of the inner gear ring by a snap-fit structure.
5. The manual drilling, sawing and twisting integrated machine according to claim 4, wherein the buckling structure comprises a buckle and a clamping groove for assembling the buckle, the clamping groove is arranged on the end face of the annular gear or on the saw face of the saw blade, the buckle is fixedly connected with one end of the second rotating handle, and the other end of the second rotating handle is a free end.
6. The manual drilling, sawing and twisting integrated machine according to claim 1, wherein the circumferential positioning structure comprises a positioning key and a key slot for assembling the positioning key, and the key slot is arranged on the outer wall of the drill bit and the inner wall of the fixed shaft.
7. The manual drilling, sawing and twisting integrated machine according to claim 1 further comprising an auxiliary rod, wherein an auxiliary hole is formed in the fixed shaft, and the auxiliary rod passes through the auxiliary Kong Hengguan and the fixed shaft.
8. The manual drilling, sawing and twisting integrated machine according to claim 1, wherein the axial positioning structure comprises a positioning ring arranged on the end face of the annular gear, and the inner diameter of the positioning ring is smaller than the inner diameter of the annular gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023631.3A CN108081215B (en) | 2018-01-10 | 2018-01-10 | Manual drilling, sawing and twisting integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023631.3A CN108081215B (en) | 2018-01-10 | 2018-01-10 | Manual drilling, sawing and twisting integrated machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108081215A CN108081215A (en) | 2018-05-29 |
| CN108081215B true CN108081215B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810023631.3A Active CN108081215B (en) | 2018-01-10 | 2018-01-10 | Manual drilling, sawing and twisting integrated machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN108081215B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802409A (en) * | 2019-10-25 | 2020-02-18 | 南宁学院 | Small-size surely bore all-in-one |
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| JP2001205509A (en) * | 2000-01-25 | 2001-07-31 | Toyota Seiki Kogyo:Kk | Fluid drive type drill |
| US6913429B1 (en) * | 2002-07-31 | 2005-07-05 | Porter-Cable Corporation | Tooless bit retaining assembly |
| TW200841967A (en) * | 2007-04-17 | 2008-11-01 | yao-bang Zhan | Hole drilling machine |
| KR20090051839A (en) * | 2007-11-20 | 2009-05-25 | 김수홍 | Drill tool for block bone grafting |
| CN201625964U (en) * | 2009-12-30 | 2010-11-10 | 永康市金风工具有限公司 | Drilling and grinding two-purpose machine |
| CN104924248A (en) * | 2015-06-30 | 2015-09-23 | 汪学品 | Planetary gear variable-torque type torque wrench |
| CN107009310A (en) * | 2016-01-28 | 2017-08-04 | 韦沃精密机械（上海）有限公司 | High low speed automatic switching control equipment and electric torsional spanner for electric torsional spanner |
| CN207710727U (en) * | 2018-01-10 | 2018-08-10 | 广州华立科技职业学院 | Hand bores saw and turns round all-in-one machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8991285B2 (en) * | 2011-06-06 | 2015-03-31 | Ernest A. Mennecke, IV | Double action internally geared rotary tool |
-
2018
- 2018-01-10 CN CN201810023631.3A patent/CN108081215B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051525A (en) * | 1990-12-22 | 1991-05-22 | 谭军 | Worm gearing tool |
| JP2001205509A (en) * | 2000-01-25 | 2001-07-31 | Toyota Seiki Kogyo:Kk | Fluid drive type drill |
| US6913429B1 (en) * | 2002-07-31 | 2005-07-05 | Porter-Cable Corporation | Tooless bit retaining assembly |
| TW200841967A (en) * | 2007-04-17 | 2008-11-01 | yao-bang Zhan | Hole drilling machine |
| KR20090051839A (en) * | 2007-11-20 | 2009-05-25 | 김수홍 | Drill tool for block bone grafting |
| CN201625964U (en) * | 2009-12-30 | 2010-11-10 | 永康市金风工具有限公司 | Drilling and grinding two-purpose machine |
| CN104924248A (en) * | 2015-06-30 | 2015-09-23 | 汪学品 | Planetary gear variable-torque type torque wrench |
| CN107009310A (en) * | 2016-01-28 | 2017-08-04 | 韦沃精密机械（上海）有限公司 | High low speed automatic switching control equipment and electric torsional spanner for electric torsional spanner |
| CN207710727U (en) * | 2018-01-10 | 2018-08-10 | 广州华立科技职业学院 | Hand bores saw and turns round all-in-one machine |
Also Published As
| Publication number | Publication date |
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| CN108081215A (en) | 2018-05-29 |
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