CN215357246U - Oblique saw locking mechanism - Google Patents
Oblique saw locking mechanism Download PDFInfo
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- CN215357246U CN215357246U CN202121201774.2U CN202121201774U CN215357246U CN 215357246 U CN215357246 U CN 215357246U CN 202121201774 U CN202121201774 U CN 202121201774U CN 215357246 U CN215357246 U CN 215357246U
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Abstract
The utility model provides a miter saw locking mechanism, wherein a turntable is rotatably arranged on a base, a miter saw body is arranged on the turntable, and the miter saw body can rotate relative to the base along with the turntable. The locking piece is used for locking the turntable on the base, the pressing sleeve of the locking piece is fixed on the base, and the pressing sleeve is internally provided with a locking cavity with an opening facing the base; the pressing plate is positioned in the locking cavity, the pressing plate and the base are respectively provided with a first gear ring and a second gear ring, and the pressing plate is pressed towards one side of the base by the elastic piece to enable the first gear ring to be meshed with the second gear ring; the rotating arm is fixedly connected with the pressing plate and extends out of the pressing sleeve, and the first gear ring can be separated from the second gear ring by lifting the rotating arm; the rotating arm is positioned at the top of the pressing sleeve and is in transmission connection with the rotating disc. The utility model can solve the problem that the locking effect of the eccentric body on the oblique saw is not reliable enough.
Description
Technical Field
The utility model belongs to the technical field of cutting equipment, and particularly relates to a locking mechanism of an oblique-cutting saw.
Background
The oblique-cutting saw is usually used for cutting materials such as metal, wood, plastics and the like, and the inclination angle of the saw body can flexibly rotate according to the requirement of the cutting shape; meanwhile, the workbench can rotate in the horizontal plane relative to the base, and after the rotation angle of the workbench is adjusted, the workbench needs to be locked on the base.
The existing miter saw locking structure usually adopts an eccentric part hinged with a handle to lock a workbench, for example, patent document No. CN201405121 discloses a miter saw workbench locking device, which comprises a locking handle body arranged on a turntable arm, a locking screw rod and a locking block, wherein one end of the locking screw rod is connected with the locking handle body through a connecting shaft, and the other end of the locking screw rod is connected with the locking block; the handle body includes handle and eccentric body, and the eccentric body passes through the cylindric lock and connects on the carousel arm, and this utility model's oblique fracture saw workstation closing device conceives ingenious, simple structure, processing convenience, low cost, has good locking effect to oblique fracture saw workstation.
However, with the structure of the eccentric body locking workbench, under the condition of high-frequency and high-amplitude vibration, the eccentric body is easy to cause locking failure of the locking block on the workbench due to autorotation or shaking, and the work reliability of the oblique cutting saw is adversely affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a locking mechanism of a miter saw, which aims to solve the problem that the reliability of the locking effect of an eccentric body on the miter saw is not enough.
The utility model provides the following technical scheme:
a miter saw locking mechanism, comprising:
a base;
the rotary table is rotatably arranged on the base, a miter saw body is arranged on the rotary table, and the miter saw body can rotate relative to the base along with the rotary table;
a retaining member for retaining the turntable on the base, wherein the retaining member comprises:
the pressing sleeve is fixed on the base, and a locking cavity with an opening facing the base is arranged in the pressing sleeve;
the pressing plate is positioned in the locking cavity, a first gear ring and a second gear ring are respectively arranged on the pressing plate and the base, and the pressing plate is pressed towards one side of the base by an elastic piece so that the first gear ring is meshed with the second gear ring;
the rotating arm is fixedly connected with the pressing plate and extends out of the pressing sleeve, and the first gear ring can be separated from the second gear ring by lifting the rotating arm; the rotating arm is positioned at the top of the pressing sleeve and is in transmission connection with the rotating disc.
Furthermore, the locking piece further comprises an intermediate plate, the intermediate plate is used for enabling the elastic piece to reliably press the pressing plate, the intermediate plate is located between the elastic piece and the pressing plate, and the intermediate plate slides up and down along with the pressing plate.
Preferably, the inner side wall of the pressing sleeve is provided with a sliding groove extending in the vertical direction, the edge of the middle plate is provided with a guide block matched with the width of the sliding groove, and the guide block slides up and down along the sliding groove.
Preferably, the elastic members are compression springs, and the plurality of elastic members are uniformly distributed along a circumferential direction concentric with the first gear ring.
Preferably, the rotating arm is connected with the axle center of the pressure plate through a shaft body; and a rotating hole for the shaft body to extend out is formed in the top of the pressing sleeve.
Furthermore, the edge of the rotary disc is provided with an annular protective edge which is bent downwards, and the protective edge covers the top of the pressing sleeve to prevent dust from entering between the rotary disc and the pressing sleeve.
Preferably, the turntable is printed with a positioning arrow; the base is provided with a graduated scale, the graduated scale is an arc-shaped scale plate concentric with the pressure plate, graduation lines used for indicating the rotating angle of the rotary table are printed on the arc-shaped scale plate, and the positioning arrow points to one of the graduation lines.
Preferably, the base is provided with support blocks on the left side and the right side of the graduated scale respectively, the top of each support block is fixedly provided with an upright positioning plate, and the positioning plates are used for positioning workpieces; and an arc-shaped clearance groove for avoiding the guard edge is formed in the inner side of the top of the supporting block.
The utility model has the beneficial effects that:
the locking piece locks the turntable and the miter saw body on the base to prevent the miter saw from shaking or displacing in the cutting process, wherein the matching structure of the pressing sleeve, the pressing plate, the rotating arm, the elastic piece and the two gear rings of the locking piece is meshed to replace the existing locking structure using the eccentric body, the screw and the gasket to be matched, and the locking effect of the gear rings to the pressing plate is stronger, so that the turntable and the base cannot be loosened even under the working condition of high-frequency and high-amplitude vibration, and the working stability and reliability of the miter saw are ensured.
According to the utility model, the intermediate plate is arranged between the elastic part and the pressing plate, the intermediate plate can slide up and down along with the pressing plate, meanwhile, in the rotating process of the pressing plate, the elastic part is supported by the intermediate plate to perform telescopic action and cannot rotate along with the pressing plate, so that the elastic part is prevented from being twisted or bent, and the reliability of the extrusion effect of the elastic part on the pressing plate is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
labeled as: 1. a base; 2. a turntable; 3. a locking member; 4. obliquely cutting the saw body; 5. pressing the sleeve; 6. pressing a plate; 7. a rotating arm; 8. an elastic member; 9. a locking cavity; 10. a first ring gear; 11. a second ring gear; 12. a shaft body; 13. a bearing; 14. positioning an arrow; 15. a graduated scale; 16. a middle plate; 17. a chute; 18. a guide block; 19. protecting the edge; 20. a support block; 21. and (7) positioning the plate.
Detailed Description
As shown in fig. 1 and 2, the locking mechanism of the miter saw comprises a base 1, a turntable 2 and a locking member 3.
The base 1 is fixedly arranged on the workbench through bolts. 2 rotary types of carousel are installed on base 1, and installation oblique fracture saw body 4 on the carousel 2, oblique fracture saw body 4 can follow carousel 2 and rotate for base 1 to carry out the cutting of different angles to panel.
The locking part 3 is used for locking the rotated turntable 2 on the base 1 to prevent the oblique saw body 4 from displacement in the cutting process, wherein the locking part 3 comprises a pressing sleeve 5, a pressing plate 6, a rotating arm 7 and an elastic part 8.
The pressing sleeve 5 is welded or screwed on the base 1, and a locking cavity 9 with an opening facing the base is arranged in the pressing sleeve 5.
The pressing plate 6 is located in the locking cavity 9, the pressing plate 6 and the base 1 are respectively provided with a first gear ring 10 and a second gear ring 11 which are coaxial and meshed with each other, the tooth tip of the first gear ring 10 extends downwards, and the tooth tip of the second gear ring 11 extends upwards. An elastic part 8 is arranged between the pressure plate 6 and the top wall of the pressure sleeve 5, and the pressure plate 6 is pressed towards one side of the base 1 by the elastic part 8, so that the first gear ring 10 is meshed with the second gear ring 11. The elastic members 8 may be compression springs or disc springs, and the plurality of elastic members 8 are uniformly distributed along a circumferential direction concentric with the first ring gear 10.
The rotating arm 7 is fixedly connected with the pressure plate 6 or is integrally formed with the pressure plate 6, a handle part of the rotating arm 7 horizontally extends out of the pressure sleeve 5, and specifically, the rotating arm 7 is connected with the axis of the pressure plate 6 through a vertical shaft body 12. The top of the pressing sleeve 5 is provided with a rotating hole for the shaft body 12 to extend out, and a bearing 13 is arranged in the rotating hole. Lifting the rotating arm 7 can press the elastic member 8 to separate the first gear ring 10 from the second gear ring 11, and the pressing plate 6 can rotate freely, and after the rotating arm 7 is released, the first gear ring 10 automatically engages with the second gear ring 11 under the pressure of the elastic member 8, so that the rotating arm 7 is firmly locked with the base 1. The shaft part of the rotating arm 7 is in transmission connection with the rotating disc 2, and the shaft part and the rotating disc can be in key connection or fixed connection.
The rotating disc 2 is printed with a positioning arrow 14, the positioning arrow 14 is preferably triangular, and the positioning arrow 14 is positioned on the central line of the miter saw body 4. The graduated scale 15 is arranged on the base 1, the graduated scale 15 is an arc-shaped scale plate concentric with the pressure plate 6, scale marks used for indicating the rotating angle of the turntable are printed on the arc-shaped scale plate, and the positioning arrow 14 points to one of the scale marks, so that the rotating angle of the oblique fracture saw body 4 can be conveniently judged.
The working principle of the embodiment is as follows:
when the cutting angle of the oblique-cutting saw body needs to be adjusted, the rotating arm 7 is lifted upwards, the elastic part 8 is extruded, the first gear ring 10 is separated from the second gear ring 11, then the rotating arm 7 is rotated to drive the pressing plate 6 and the rotary table 2 to rotate synchronously, the rotating table 2 is judged to rotate to a required angle by observing the graduated scale 15, the rotating arm 7 is loosened, the pressing plate 6 descends under the pressure action of the elastic part 8, the first gear ring 10 and the second gear ring 11 are automatically meshed to lock the pressing plate 6 and the base 1, so that the rotary table 2 and the oblique-cutting saw body 4 arranged above the rotary table are locked at an angle, and then the cutting operation of a plate is carried out.
Example 2
The present embodiment is different from embodiment 1 in that the present embodiment further includes a further improvement of the specific structure of the intermediate plate 16 and the turntable.
In particular, retaining member 3 also comprises an intermediate plate 16 for elastic member 8 to press pressure plate 6 reliably, avoiding elastic member 8 from rotating or twisting along with pressure plate 6 and damaging its working stability. The intermediate plate 16 is located between the elastic element 8 and the pressing plate 6, the upper end and the lower end of the elastic element 8 are respectively fixed on the bottom surface of the top wall of the pressing sleeve 5 and the intermediate plate 16, and the intermediate plate 16 can slide up and down along with the pressing plate 6.
Wherein, the inner side wall of the pressing sleeve 5 is provided with a sliding chute 17 extending along the vertical direction for guiding the sliding of the pressing plate 6; the edge of the middle plate 16 is provided with a guide block 18 which is matched with the width of the sliding groove 17, and the guide block 18 slides up and down along the sliding groove 17 in the process that the pressing plate 6 slides up and down.
The edge of the rotary disc 2 is provided with a downward bent annular protective edge 19, and the protective edge 19 covers the top of the pressing sleeve 5 to prevent dust from entering between the rotary disc 2 and the pressing sleeve 5 to cause the rotation of the rotary disc to generate clamping stagnation.
Supporting blocks 20 are respectively installed on the left side and the right side of the graduated scale on the base 1, an upright positioning plate 21 is fixedly installed at the top of each supporting block 20, the positioning plate 21 and the turntable 2 are not fixedly connected, and gaps can be reserved between the positioning plate 21 and the turntable 2 to facilitate rotation of the turntable. The positioning plate 21 can abut against the workpiece to position the workpiece, and the cutting precision of the workpiece is ensured. An arc-shaped clearance groove for avoiding the guard edge 19 is formed on the inner side of the top of the supporting block 20.
The working principle of the embodiment is as follows:
when the cutting angle of the oblique cutting saw body needs to be adjusted, the rotating arm 7 is lifted upwards, the elastic part 8 is extruded, the first gear ring 10 is separated from the second gear ring 11, then the rotating arm 7 is rotated, the pressing plate 6 and the rotary table 2 are driven to rotate synchronously, and in the process, the elastic part 8 always keeps a vertical state to extrude the middle plate 16, so that the elastic part 8 cannot be twisted or displaced left and right. After the scale 15 is observed to judge that the rotary table 2 rotates to a required angle, the rotating arm 7 is loosened, the pressing plate 16 descends under the pressure action of the elastic part 8, the first gear ring 10 and the second gear ring 11 are automatically meshed to lock the pressing plate 16 and the base 1, so that the rotary table 2 and the oblique-cutting saw body 4 arranged above the rotary table are locked at an angle, and then the plate is cut.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A miter saw locking mechanism, comprising:
a base;
the rotary table is rotatably arranged on the base, a miter saw body is arranged on the rotary table, and the miter saw body can rotate relative to the base along with the rotary table;
a retaining member for retaining the turntable on the base, wherein the retaining member comprises:
the pressing sleeve is fixed on the base, and a locking cavity with an opening facing the base is arranged in the pressing sleeve;
the pressing plate is positioned in the locking cavity, a first gear ring and a second gear ring are respectively arranged on the pressing plate and the base, and the pressing plate is pressed towards one side of the base by an elastic piece so that the first gear ring is meshed with the second gear ring;
the rotating arm is fixedly connected with the pressing plate and extends out of the pressing sleeve, and the first gear ring can be separated from the second gear ring by lifting the rotating arm; the rotating arm is positioned at the top of the pressing sleeve and is in transmission connection with the rotating disc.
2. The miter saw locking mechanism of claim 1, wherein said locking member further includes an intermediate plate for securely pressing said pressing plate against said elastic member, said intermediate plate being located between said elastic member and said pressing plate, said intermediate plate sliding up and down with said pressing plate.
3. The miter saw locking mechanism of claim 2, wherein a sliding groove extending in a vertical direction is formed in an inner side wall of the pressing sleeve, a guide block adapted to a width of the sliding groove is formed in an edge of the middle plate, and the guide block slides up and down along the sliding groove.
4. The miter saw locking mechanism of claim 1, wherein said resilient member is a compression spring, and a plurality of said resilient members are evenly distributed along a circumferential direction concentric with said first gear ring.
5. The miter saw locking mechanism of claim 1, wherein said pivot arm is pivotally connected to said pressure plate at an axial center thereof; and a rotating hole for the shaft body to extend out is formed in the top of the pressing sleeve.
6. A miter saw locking mechanism as claimed in any of claims 1 to 5, wherein the edge of the rotary table is provided with a downwardly bent annular guard edge, which covers the top of the press sleeve to prevent dust from entering between the rotary table and the press sleeve.
7. The miter saw locking mechanism of claim 6, wherein said turntable has positioning arrows printed thereon; the base is provided with a graduated scale, the graduated scale is an arc-shaped scale plate concentric with the pressure plate, graduation lines used for indicating the rotating angle of the rotary table are printed on the arc-shaped scale plate, and the positioning arrow points to the graduation lines.
8. The miter saw locking mechanism of claim 7, wherein support blocks are respectively mounted on the base at the left and right sides of the graduated scale, and vertical positioning plates are fixedly mounted at the tops of the support blocks and used for positioning a workpiece; and an arc-shaped clearance groove for avoiding the guard edge is formed in the inner side of the top of the supporting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121201774.2U CN215357246U (en) | 2021-05-31 | 2021-05-31 | Oblique saw locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121201774.2U CN215357246U (en) | 2021-05-31 | 2021-05-31 | Oblique saw locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215357246U true CN215357246U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121201774.2U Active CN215357246U (en) | 2021-05-31 | 2021-05-31 | Oblique saw locking mechanism |
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| Country | Link |
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| CN (1) | CN215357246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116475492A (en) * | 2023-03-07 | 2023-07-25 | 金华市亚虎工具有限公司 | Oblique fracture saw installation workbench |
-
2021
- 2021-05-31 CN CN202121201774.2U patent/CN215357246U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116475492A (en) * | 2023-03-07 | 2023-07-25 | 金华市亚虎工具有限公司 | Oblique fracture saw installation workbench |
| CN116475492B (en) * | 2023-03-07 | 2024-01-09 | 金华市亚虎工具有限公司 | Oblique fracture saw installation workbench |
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