CN111890135A - Knife sharpener and broach mechanism - Google Patents
Knife sharpener and broach mechanism Download PDFInfo
- Publication number
- CN111890135A CN111890135A CN202010671723.XA CN202010671723A CN111890135A CN 111890135 A CN111890135 A CN 111890135A CN 202010671723 A CN202010671723 A CN 202010671723A CN 111890135 A CN111890135 A CN 111890135A
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- CN
- China
- Prior art keywords
- connecting shaft
- piston body
- piston
- broach
- cavity
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Abstract
The invention relates to the technical field of knife sharpening, in particular to a knife sharpener and a broach mechanism, which comprise a driving cylinder, wherein the driving cylinder comprises a cylinder body and a piston body, the piston body and the cylinder body form a first piston cavity and a second piston cavity which are not communicated with each other, and the piston body can move along the axial direction relative to the driving cylinder; the upper end of the connecting shaft is connected with the piston body, and the connecting shaft can rotate around the axis relative to the piston body and can move along the axial direction of the connecting shaft along with the piston body; a clamp connected with the connecting shaft; when the piston body moves along the axial direction, the clamp can lock or unlock the cutter. On one hand, the problem that the broach force is limited by the broach stroke is avoided, the driving cylinder can adjust the broach stroke according to different types of tool handles, and meanwhile, stable and reliable broach acting force is provided, so that the use of different types of tools can be met; on the other hand, the broach device has higher response speed, and the broach force provided by the driving cylinder cannot be attenuated along with the use, so that the service life of the device is prolonged, and the maintenance cost is reduced.
Description
Technical Field
The invention relates to the technical field of knife sharpening, in particular to a knife sharpener and a broach mechanism.
Background
In recent years, with the development of the domestic knife sharpener industry, broach mechanisms on the market are various in types and different in performance. The broach mechanism of prior art adopts the structure that the dish spring provided broach power more, and the life of dish spring is limited and the broach stroke can only be done fine adjustment, and the dish spring life-span can sharply shorten otherwise, but the handle of a knife structure of different cutters leads to the stroke distance when broach locking different, consequently adopts the broach mechanism of dish spring to be difficult to the requirement of compatible multiple handle of a knife type to the broach stroke among the prior art.
Disclosure of Invention
The invention aims to provide a knife sharpener and a broach mechanism which can meet the requirements of different knives on the stroke of a broach and have good clamping stability and long service life.
In order to achieve the above object, the present invention provides a broach mechanism comprising:
the driving cylinder comprises a cylinder body and a piston body, the piston body and the cylinder body form a first piston cavity and a second piston cavity which are not communicated with each other, and the piston body can move along the axial direction relative to the driving cylinder;
the upper end of the connecting shaft is connected with the piston body, and the connecting shaft can rotate around the axis relative to the piston body and can move along the axial direction of the connecting shaft along with the piston body;
the clamp is connected with the connecting shaft;
when the piston body moves along the axial direction, the clamp can lock or unlock the cutter.
Optionally, the connecting shaft is connected with the piston body through a rotating member.
Optionally, the piston body is provided with a limiting cavity which is used for limiting the connecting shaft to move axially relative to the piston body and has an opening at the lower end, and the upper end of the connecting shaft penetrates through the opening and is rotatably connected in the limiting cavity through the rotating piece.
Optionally, the rotating part is sleeved and fixed on the connecting shaft, and a limiting flange used for limiting the rotating part to be separated from the limiting cavity is arranged at an opening of the limiting cavity.
Optionally, the piston body includes a piston portion and a sleeve portion fixedly connected to the piston portion, the piston portion is slidably disposed in the cylinder body, the inner side wall of the sleeve portion in the radial direction is provided with the limit flange, the upper end of the sleeve portion is provided with an end cover, and the sleeve portion, the limit flange and the end cover together form the limit cavity.
Optionally, the rotating member includes an outer ring and an inner ring that rotates relative to the outer ring, the outer ring is fixedly connected to the connecting shaft, and the inner ring is used for abutting against the upper end face of the limiting flange to enable the connecting shaft and the piston body to rotate relative to each other.
Optionally, a baffle plate for limiting the axial movement of the rotating member relative to the connecting shaft is mounted at the upper end of the connecting shaft.
Optionally, the clamp includes a pull rod, the connecting shaft is provided with a connecting hole, the upper end of the pull rod is in threaded connection with the connecting hole, the upper end of the pull rod is provided with a tensioning hole extending axially, and the tensioning hole is internally in threaded connection with a set screw.
Optionally, the fixture further comprises a mounting seat, the fixture further comprises a shaft core, the shaft core is mounted in the mounting seat and can rotate circumferentially, the cylinder body is mounted in the mounting seat, the shaft core is provided with mounting holes which axially penetrate through the upper end and the lower end, and the pull rod penetrates through the mounting holes and is in threaded connection with the connecting shaft.
Based on the purpose, the invention further provides a knife sharpener which comprises the broach mechanism.
The embodiment of the invention has the following technical effects:
according to the invention, the driving cylinder is arranged, the connecting shaft moves relative to the cylinder body through the piston body of the driving cylinder, so that the connecting shaft and the clamp are pulled, and the clamp axially moves to clamp the cutter; on the other hand, the piston body of the driving cylinder is driven by the pressure change in the first piston cavity and the second piston cavity respectively, the response speed is higher, and the broach force provided by the driving cylinder is not attenuated along with the use, so that the equipment has a good service life, and the maintenance cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment 1 of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is a schematic structural view of the preferred embodiment 2 of the present invention.
Description of reference numerals:
1. the piston comprises a driving cylinder, 11, a cylinder body, 12, a piston body, 121, a limit cavity, 122, a limit flange, 123, a piston part, 124, a sleeve part, 125, an end cover, 13, a first piston cavity, 14 and a second piston cavity;
2. a connecting shaft, 21 and a baffle plate,
3. the clamp 31, the pull rod 32, the set screw 33, the shaft core 34, the collet seat 35 and the pull claw;
4. a rotor 41, an inner ring 42, an outer ring;
5. a mounting seat;
6. and (4) a cutter.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In addition, the terms "first", "second", and the like are employed in the present invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
Example 1:
referring to fig. 1 and 2, one embodiment of the present invention provides a broach mechanism, including:
the driving cylinder 1 comprises a cylinder body 11 and a piston body 12, the piston body 12 and the cylinder body 11 form a first piston cavity 13 and a second piston cavity 14 which are not communicated with each other, and the piston body 12 can move along the axial direction relative to the driving cylinder 1;
a connecting shaft 2, the upper end of which is connected with the piston body 12, the connecting shaft 2 being rotatable around an axis with respect to the piston body 12 and being capable of moving along the axial direction of the connecting shaft 2 following the piston body 12;
a clamp 3 connected with the connecting shaft 2;
wherein the clamp 3 is capable of locking or unlocking the tool 6 when the piston body 12 is moved in the axial direction.
According to the invention, the driving cylinder 1 is arranged, the connecting shaft 2 moves relative to the cylinder body 11 through the piston body 12 of the driving cylinder 1, so that the connecting shaft 2 and the clamp 3 are pulled, the clamp 3 axially moves to clamp the cutter 6, on one hand, the piston body 12 pulls the clamp 3 to clamp the cutter 6, so that the problem that the broach force is limited by the broach stroke is avoided, and the piston body 12 can adjust the pressure of the first piston cavity 13 and the second piston cavity 14 according to different types of tool shanks, so that the moving distance of the piston body 12 is adjusted to adjust the broach stroke, and meanwhile, stable and reliable broach acting force is provided, and the use of cutters 6 of different types can be met; on the other hand, the piston body 12 of the driving cylinder 1 is driven by the pressure change in the first piston cavity 13 and the second piston cavity 14 respectively, so that the response speed is higher, and the broach force provided by the driving cylinder 1 cannot be attenuated along with the use, so that the service life of the equipment is prolonged, and the maintenance cost is reduced.
Further, in order to improve the stability and reliability of the relative rotation between the connecting shaft 2 and the piston body 12, the connecting shaft 2 is connected to the piston body 12 via the rotor 4.
Furthermore, the piston body 12 in this embodiment is provided with a limiting cavity 121 for limiting the axial movement of the connecting shaft 2 relative to the piston body 12 and having an open lower end, the upper end of the connecting shaft 2 penetrates through the opening and is rotatably connected to the limiting cavity 121 through the rotating member 4, so that the rotating member 4 is connected to the limiting cavity 121, and the limiting cavity 121 limits the axial movement of the connecting shaft 2 within a preset range, thereby driving the rotating member to axially move when the piston body 12 axially moves.
Specifically, the rotating member 4 is sleeved and fixed on the connecting shaft 2, and a limiting flange 122 for limiting the rotating member 4 to be separated from the limiting cavity 121 is arranged at an opening of the limiting cavity 121.
The rotating member 4 includes an outer ring 42 and an inner ring 41 that rotates relative to the outer ring 42, the outer ring 42 is fixedly connected to the connecting shaft 2, and the inner ring 41 is used for abutting against the upper end surface of the limiting flange 122 to enable the connecting shaft 2 and the piston body 12 to rotate relative to each other, so that the connecting shaft 2 and the piston body 12 can rotate relative to each other through the inner ring 41 and the outer ring 42 while the piston body 12 is pulled to move axially by the connecting shaft 2.
Further, the piston body 12 includes a piston portion 123 and a sleeve portion 124 fixedly connected to the piston portion 123, the piston portion 123 is slidably disposed in the cylinder 11, a position-limiting flange 122 is disposed on an inner side wall of the sleeve portion 124 in a radial direction, an end cap 125 is mounted on an upper end of the sleeve portion 124, and the sleeve portion 124, the position-limiting flange 122 and the end cap 125 together form a position-limiting cavity 121, so that when the piston body 12 moves upward, the connecting shaft 2 is pulled to move axially by abutting the position-limiting flange 122 against the inner ring 41, so as to lock the cutter 6, and when the piston body 12 moves downward, the connecting shaft 2 is pressed axially by the end cap 125 to unlock the cutter 6.
The upper end of the connecting shaft 2 is provided with a baffle 21 for limiting the axial movement of the rotating piece 4 relative to the connecting shaft 2, thereby further improving the reliability of the connection of the rotating piece 4 and the connecting shaft 2.
In this embodiment, the device further includes an installation base 5, the driving cylinder 1 is installed on the installation base 5, the fixture 3 includes a pull rod 31, a shaft core 33 and a collet holder 34, the shaft core 33 is rotatably installed on the installation base 5, the shaft core 33 is provided with an installation hole penetrating through the upper and lower ends, the pull rod 31 is inserted into the installation hole and fixedly connected with the connecting shaft 2, the collet holder 34 is provided with a first guiding conical surface which is inclined from bottom to top and from the outer side to the inner side along the radial direction of the connecting shaft 2, when the pressure in the second piston cavity 14 is increased, the piston body 12 moves upward, the limiting flange 122 abuts against the inner ring 41 to drive the connecting shaft 2 to move upward axially, meanwhile, the pull rod 31 and the cutter 6 connected to the pull rod 31 move upward, and the cutter 6 gradually and tightly abuts against the first guiding conical surface in the upward movement process to lock the cutter 6 and the shaft core 33, so; when the pressure in the first piston cavity 13 increases, the piston body 12 moves downward, the end cover 125 abuts against the baffle 21 to drive the connecting shaft 2 to move downward, meanwhile, the pull rod 31 and the cutter 6 connected to the pull rod 31 move downward, and the cutter 6 gradually leaves the first guiding conical surface in the process of moving downward, so as to unlock the cutter 6 from the shaft core 33.
Furthermore, in order to improve the connection reliability of the pull rod 31 and the connecting shaft 2, the connecting shaft 2 is provided with a connecting hole, the upper end of the pull rod 31 is in threaded connection with the connecting hole, the upper end of the pull rod 31 is provided with a tensioning hole extending axially, and the tensioning hole is internally in threaded connection with a set screw 32, so that a gap between the pull rod 31 and the connecting hole thread is eliminated through the set screw 32, and looseness is prevented.
An embodiment of the invention further provides a knife sharpener with good use stability and wider application range, which comprises the broach mechanism.
Example 2:
referring to fig. 2 and 3, the difference between this embodiment and the above embodiment 1 is that the clamp 3 of this embodiment includes a pull rod 31, a shaft core 33 and a pull claw 35, the inner side wall of the installation hole of the shaft core 33 is provided with a protrusion, one end of the pull claw 35 clamps the pull rod 31, the other end clamps the pull nail of the tool holder, the shaft core 33 is provided with a second guiding conical surface which is inclined from bottom to top and from the outer side to the inner side along the radial direction of the connecting shaft 2, when the pressure in the second piston cavity 14 increases, the piston body 12 moves upward, the limiting flange 122 abuts against the inner ring 41 to drive the connecting shaft 2 to move upward axially, at the same time, the pull rod 31 drives the pull claw 35 and the tool 6 to move upward, when the pull claw 35 gradually moves upward and the pull claw 35 contacts with the protrusion, the lower end of the protrusion gradually pushes the lower end of the pull claw 35 to tighten to clamp the tool 6, in addition, during the, so as to lock the cutter 6 and the shaft core 33, and drive the cutter 6 to rotate when the shaft core 33 rotates; when the pressure in the first piston cavity 13 is increased, the piston body 12 moves downwards, the end cover 125 abuts against the baffle plate 21 to drive the connecting shaft 2 to move downwards, meanwhile, the pull rod 31 and the pull claw 35 connected to the pull rod 31 move downwards, the pull claw 35 leaves the bulge in the downward movement process of the pull claw 35, the lower end of the pull claw 35 gradually opens to unlock the cutter 6, and in addition, the outer side surface of the cutter 6 leaves the second guiding conical surface.
According to the invention, the driving cylinder 1 is arranged, the connecting shaft 2 moves relative to the cylinder body 11 through the piston body 12 of the driving cylinder 1, so that the connecting shaft 2 and the clamp 3 are pulled, the clamp 3 axially moves to clamp the cutter 6, on one hand, the piston body 12 pulls the clamp 3 to clamp the cutter 6, so that the problem that the broach force is limited by the broach stroke is avoided, and the piston body 12 can adjust the pressure of the first piston cavity 13 and the second piston cavity 14 according to different types of tool shanks, so that the moving distance of the piston body 12 is adjusted to adjust the broach stroke, and meanwhile, stable and reliable broach acting force is provided, and the use of cutters 6 of different types can be met; on the other hand, the piston body 12 of the driving cylinder 1 is driven by the pressure change in the first piston cavity 13 and the second piston cavity 14 respectively, so that the response speed is higher, and the broach force provided by the driving cylinder 1 cannot be attenuated along with the use, so that the service life of the equipment is prolonged, and the maintenance cost is reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A broach mechanism, characterized by comprising:
the driving cylinder comprises a cylinder body and a piston body, the piston body and the cylinder body form a first piston cavity and a second piston cavity which are not communicated with each other, and the piston body can move along the axial direction relative to the driving cylinder;
the upper end of the connecting shaft is connected with the piston body, and the connecting shaft can rotate around the axis relative to the piston body and can move along the axial direction of the connecting shaft along with the piston body;
the clamp is connected with the connecting shaft;
when the piston body moves along the axial direction, the clamp can lock or unlock the cutter.
2. The broach mechanism according to claim 1, wherein the connecting shaft is connected to the piston body by a rotary member.
3. The broach mechanism according to claim 2, wherein the piston body is provided with a limiting cavity for limiting the connecting shaft to move axially relative to the piston body and having an open lower end, and the upper end of the connecting shaft penetrates through the opening and is rotatably connected to the limiting cavity through the rotating member.
4. The broach mechanism according to claim 3, wherein the rotating member is sleeved and fixed on the connecting shaft, and a limiting flange for limiting the rotating member to be separated from the limiting cavity is provided at an opening of the limiting cavity.
5. The broach mechanism according to claim 4, wherein the piston body includes a piston portion and a sleeve portion fixedly connected with the piston portion, the piston portion is slidably disposed in the cylinder body, the inner side wall of the sleeve portion in the radial direction is provided with the limit flange, the upper end of the sleeve portion is provided with an end cap, and the sleeve portion, the limit flange and the end cap together form the limit cavity.
6. The broach mechanism according to claim 5, wherein the rotating member includes an outer ring and an inner ring capable of rotating relative to the outer ring, the outer ring is fixedly connected to the connecting shaft, and the inner ring is configured to abut against an upper end surface of the stopper flange to enable the connecting shaft and the piston body to rotate relative to each other.
7. The broach mechanism according to any one of claims 1 to 6, wherein a stop plate for limiting axial movement of the rotary member with respect to the connecting shaft is mounted to an upper end of the connecting shaft.
8. The broach mechanism according to claim 1, wherein the clamp includes a pull rod, the connecting shaft is provided with a connecting hole, the upper end of the pull rod is in threaded connection with the connecting hole, the upper end of the pull rod is provided with a tensioning hole extending axially, and the tensioning hole is internally in threaded connection with a set screw.
9. The broach mechanism according to claim 8, further comprising a mounting seat, wherein the clamp further comprises a shaft core, the shaft core is mounted on the mounting seat and can rotate circumferentially, the cylinder body is mounted on the mounting seat, the shaft core is provided with a mounting hole axially penetrating through the upper end and the lower end, and the pull rod is arranged in the mounting hole in a penetrating manner and is in threaded connection with the connecting shaft.
10. A knife sharpener comprising the broach mechanism of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671723.XA CN111890135A (en) | 2020-07-13 | 2020-07-13 | Knife sharpener and broach mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671723.XA CN111890135A (en) | 2020-07-13 | 2020-07-13 | Knife sharpener and broach mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111890135A true CN111890135A (en) | 2020-11-06 |
Family
ID=73192533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010671723.XA Pending CN111890135A (en) | 2020-07-13 | 2020-07-13 | Knife sharpener and broach mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111890135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977364A (en) * | 2021-10-08 | 2022-01-28 | 江苏星晨高速电机有限公司 | Broach mechanism for tool grinder spindle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113977364A (en) * | 2021-10-08 | 2022-01-28 | 江苏星晨高速电机有限公司 | Broach mechanism for tool grinder spindle |
| CN113977364B (en) * | 2021-10-08 | 2022-08-05 | 江苏星晨高速电机有限公司 | Broach mechanism for tool grinder spindle |
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Application publication date: 20201106 |
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| RJ01 | Rejection of invention patent application after publication |