CN217941891U - Split type handle of a knife - Google Patents
Split type handle of a knife Download PDFInfo
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- CN217941891U CN217941891U CN202222382395.9U CN202222382395U CN217941891U CN 217941891 U CN217941891 U CN 217941891U CN 202222382395 U CN202222382395 U CN 202222382395U CN 217941891 U CN217941891 U CN 217941891U
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Abstract
The utility model relates to the technical field of machining, especially, relate to a split type handle of a knife, including handle of a knife body, joint handle and locking screw, the spliced eye that is used for connecting the joint handle is offered to handle of a knife body one end, the handle of a knife body has still seted up supplementary locking hole in spliced eye the inner, supplementary locking hole threaded connection has the ka tai nut, the cross-under hole has been seted up at ka tai nut middle part, the one end that the spliced eye was kept away from at ka tai nut to the handle of a knife body is equipped with the holding chamber that is used for holding locking screwhead portion, locking screwhead portion is provided with the locking draw-in groove, the handle of a knife body middle part is seted up the handle hole that communicates mounting hole and holding chamber. The utility model discloses simple structure, when the handle hole diameter is fixed, can adopt the locking screw of great diameter to improve the locking force and the joint strength who connect the handle, realize the improvement of butt joint handle locking force and joint strength under the condition that does not influence handle of a knife body rigidity promptly.
Description
Technical Field
The utility model relates to the technical field of machining, especially, relate to a split type handle of a knife.
Background
The tool shank is a tool, is connected with a machine tool and a cutter and is an indispensable part in machining. The structure of the tool holder can be divided into an integrated tool holder and a split tool holder. When the integral type handle of a knife clamping department is impaired, need whole handle of a knife to change, be unfavorable for the lean production, and integral type handle of a knife material is with high costs, and the technology is complicated, and manufacturing cost is high, therefore split type handle of a knife's application is comparatively extensive. Split type handle of a knife generally includes the handle of a knife body, connects handle and locking screw, and the spliced eye that is used for connecting the connection handle is offered to the one end of handle of a knife body, and current mounting means will connect the handle to insert behind the spliced eye, penetrates locking screw from the other end of handle of a knife body again, carries out taut assembly through locking screw to connecting the handle.
Because the locking screw need be followed the handle of a knife body and is kept away from the one end of spliced eye and penetrated to make the locking screw tail end stretch into the spliced eye, consequently need set up the cross-under hole in the handle of a knife body is inside, and the diameter of cross-under hole can not be less than the external diameter of screw thread of locking screw. In order to guarantee the rigidity of handle of a knife body, the cross-under hole diameter should not be too big to the diameter of locking screw has been restricted, consequently, current split type handle of a knife mounting means is difficult to improve its locking force and joint strength who docks the handle through increase locking screw diameter.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects existing in the prior art are overcome, and a split type knife handle is provided.
The utility model discloses a realize through following technical scheme:
the utility model provides a split type handle of a knife, includes handle of a knife body, connects handle and locking screw, the spliced eye that is used for connecting the connection handle is offered to handle of a knife body one end, the mounting hole that is used for connecting the lathe main shaft is offered to the handle of a knife body other end, the handle of a knife body has still seted up supplementary locking hole in spliced eye the inner, supplementary locking hole threaded connection has the ka tai nut, the cross-under hole has been seted up at ka tai nut middle part, the cross-under hole diameter is less than locking screw's head diameter, the cross-under hole diameter is greater than or equal to locking screw's external diameter of screw, the handle of a knife body is equipped with the holding chamber that is used for holding locking screw head portion in the one end that the spliced eye was kept away from to ka tai nut, locking screw head portion is provided with the locking draw-in groove, the circumscribed diameter of locking draw-in groove is less than locking screw's external diameter, the handle of a knife body middle part sets up the handle of intercommunication mounting hole and the holding chamber, the diameter of operating hole and the external diameter looks adaptation of locking draw-in groove.
Preferably, an annular groove is formed between the insertion hole and the auxiliary locking hole, an annular clamping step is arranged at one end, close to the insertion hole, of the clamping table nut, the outer diameter of the annular clamping step is larger than the diameter of the auxiliary locking hole, and the outer diameter of the annular clamping step is smaller than the outer diameter of the annular groove.
Preferably, the thread direction of the clamping table nut is opposite to that of the locking screw.
Preferably, the clamping table nut is provided with a plurality of clamping grooves on the end face close to the auxiliary locking hole.
Preferably, the clamping grooves are distributed at equal angles around the axis of the clamping nut.
Preferably, the insertion section of the connection handle inserted into the insertion hole is a triangular pyramid, three side surfaces of the insertion section of the connection handle are convex arc surfaces, and the shape of the insertion hole is matched with that of the insertion section of the connection handle.
Preferably, the connecting handle is provided with a positioning end face at the root of the inserting section of the connecting handle, and the handle body is provided with a body positioning face attached to the positioning end face.
The beneficial effects of the utility model are that:
the utility model discloses simple structure, because the cassette holder nut, locking screw and connect the handle all assemble from one end of handle of a knife body, and the handle hole diameter that sets up in the middle part of the handle of a knife body is less than locking screw's external diameter, therefore when the handle hole diameter is fixed, can adopt locking screw of great diameter to improve the locking force and the joint strength who connects the handle, realize the improvement of butt joint handle locking force and joint strength under the circumstances that does not influence handle of a knife body rigidity promptly, in the actual production course of working, the length of part handle of a knife body can reach 350mm, therefore, it is especially important to improve the rigidity of handle of a knife body through restricting the handle hole diameter; the thread turning direction of the clamping table nut is opposite to that of the locking screw, so that the clamping table nut can be prevented from loosening, and the overall stability of assembly can be improved; the clamping groove is convenient for workers to install or disassemble the clamping nut; the splicing section is a triangular pyramid platform and has the characteristics of better torque transmission performance and looseness prevention; the positioning end face is matched with the positioning face of the body, so that the overall rigidity of the split type knife handle is further improved, and the precision retentivity is good.
Drawings
FIG. 1 is a schematic view of the assembly structure of the present invention;
FIG. 2 is a schematic sectional view of the tool holder body according to the present invention;
FIG. 3 is a schematic cross-sectional view of the connecting handle of the present invention;
FIG. 4 is a schematic structural view of the connecting handle of the present invention;
fig. 5 is a schematic structural view of the chuck nut of the present invention.
In the figure: 1. a handle is connected; 2. a plug section; 3. locking the screw; 4. an annular groove; 5. an operation hole; 6. mounting holes; 7. a knife handle body; 8. locking the clamping groove; 9. a chuck nut; 901. an annular clamping step; 902. a clamping groove; 903. perforating the hole; 10. inserting holes; 11. an auxiliary locking hole; 12. an accommodating cavity; 13. a body positioning surface; 14. a primary locking hole; 15. and positioning the end face.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the best embodiment.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in FIGS. 1 to 5, the utility model provides a split type knife handle, which comprises a knife handle body 7, a connecting handle 1 and a locking screw 3, wherein one end of the knife handle body 7 is provided with an inserting hole 10 for connecting the connecting handle 1, one end of the connecting handle 1 is provided with an inserting section 2 for inserting the inserting hole 10, the other end of the connecting handle 1 is provided with a heat shrinkage hole, the heat shrinkage hole is used for installing a tool by utilizing the principle of expansion with heat and contraction with cold, the inserting section 2 is provided with a main locking hole 14 matched with the locking screw 3, the other end of the knife handle body 7 is provided with a mounting hole 6 for connecting a main shaft of a machine tool, the knife handle body 7 is also provided with an auxiliary locking hole 11 at the inner end of the inserting hole 10, the auxiliary locking hole 11 is in threaded connection with a clamping table nut 9, the auxiliary locking hole 11 is provided with an internal thread, the periphery of the clamping table nut 9 is provided with an external thread matched with the internal thread of the auxiliary locking hole 11, the middle part of the chuck nut 9 is provided with a through hole 903 for through connection of the locking screw 3, the diameter of the through hole 903 is smaller than the diameter of the head of the locking screw 3, the diameter of the through hole 903 is larger than or equal to the external diameter of the thread of the locking screw 3, the handle body 7 is provided with an accommodating cavity 12 at one end of the chuck nut 9 far away from the inserting hole 10 for accommodating the head of the locking screw 3, the head of the locking screw 3 is provided with a locking clamping groove 8, the locking clamping groove 8 can be a groove with a polygonal cross section, specifically, in the embodiment, the locking clamping groove 8 is an inner hexagonal groove, the diameter of an external circle of the locking clamping groove 8 is smaller than the external diameter of the locking screw 3, the middle part of the handle body 7 is provided with an operation hole 5 communicating the mounting hole 6 and the accommodating cavity 12, and the diameter of the operation hole 5 is matched with the diameter of the external circle of the locking clamping groove 8, the socket head wrench is convenient to pass through the operation hole 5 and be clamped to the socket head cap groove, when the connection handle 1 needs to be installed, the locking screw 3 is connected to the through hole 903 in the through way, the clamping table nut 9 is connected to the auxiliary locking hole 11 in the threaded way, the head of the locking screw 3 is positioned in the accommodating cavity 12, the inserting section 2 of the connection handle 1 is inserted into the inserting hole 10, the socket head wrench penetrates through the installation hole 6, the socket head wrench penetrates through the operation hole 5 and is clamped to the socket head cap groove, the socket head wrench can be rotated to drive the locking screw 3 to rotate, the tail of the locking screw 3 is screwed into the main locking hole 14, and the tightening assembly of the connection handle 1 can be completed by continuously screwing the locking screw 3, because the cassette table nut 9, the locking screw 3 and the connecting handle 1 are all assembled from one end of the handle body 7, and the diameter of the operation hole 5 arranged in the middle of the handle body 7 is smaller than the outer diameter of the locking screw 3, when the diameter of the operation hole 5 is constant, the locking force and the connection strength of the connecting handle 1 can be improved by the locking screw 3 with a larger diameter, namely, the locking force and the connection strength of the connecting handle 1 are improved under the condition that the rigidity of the handle body 7 is not influenced, in the actual production and processing process, the length of part of the handle body 7 can reach 350mm, and therefore, the improvement of the rigidity of the handle body 7 by limiting the diameter of the operation hole 5 is particularly important.
An annular groove 4 is formed between the inserting hole 10 and the auxiliary locking hole 11, an annular clamping step 901 is arranged at one end, close to the inserting hole 10, of the clamping nut 9, the outer diameter of the annular clamping step 901 is larger than that of the auxiliary locking hole 11, the outer diameter of the annular clamping step 901 is smaller than that of the annular groove 4, when the clamping nut 9 is screwed to the auxiliary locking hole 11, the annular clamping step 901 abuts against the opposite side of the annular groove 4, and therefore the clamping nut 9 is convenient to position.
The screw thread turning direction of the clamping table nut 9 is opposite to that of the locking screw 3, when the locking screw 3 is screwed to tighten and assemble the connecting handle 1, the clamping table nut 9 can be prevented from being loosened due to friction between the head of the locking screw 3 and one side of the clamping table nut 9, and the overall stability of assembly can be improved.
The terminal surface that ka tai nut 9 is close to supplementary locking hole 11 is provided with a plurality of joint grooves 902, sets up the joint piece with joint groove 902 one-to-one adaptation at box spanner's cover barrel end, can drive ka tai nut 9 through box spanner and rotate, and the staff of being convenient for installs or dismantles ka tai nut 9.
A plurality of joint groove 902 is around angular distribution such as the axis of ka tai nut 9, when rotating ka tai nut 9 through box spanner, can make ka tai nut 9 atress even.
The inserting section 2 of the connecting handle 1 inserted into the inserting hole 10 is a triangular pyramid, three side surfaces of the inserting section 2 of the connecting handle 1 are convex arc surfaces, the shape of the inserting hole 10 is matched with the shape of the inserting section 2 of the connecting handle 1, and the section of the inserting section 2 is non-circular, so that the connecting handle has the characteristics of better torque transmission performance and looseness prevention.
Connect handle 1 to be equipped with location terminal surface 15 in 2 root positions of its grafting section, handle of a knife body 7 is provided with the body locating surface 13 of laminating mutually with location terminal surface 15, and location terminal surface 15 cooperatees with body locating surface 13 and has further improved the bulk rigidity of split type handle of a knife, connects the reassembly precision of handle 1 to reach 2 mu m, will connect handle 1 to install to handle of a knife body 7 back, the jump amount of 4 times diameter departments of cutter can be controlled below 3 mu m to guarantee that the cutting edge of cutter can the steady operation, prevent because of the cutter breakage and the cutter life shortening incident that the too big arouses of jump amount, precision retentivity is good.
The utility model provides a working principle of split type handle of a knife is, when needing to install the connection handle, cross-under the locking screw to the cross-under hole, with ka tai nut threaded connection to supplementary locking hole, make locking screw head be located the holding intracavity, insert the grafting hole with the grafting section of connection handle, penetrate interior hexagonal spanner from the mounting hole, joint to interior hexagonal groove after making interior hexagonal spanner pass the handle hole, rotate interior hexagonal spanner and can drive the locking screw rotation, make locking screw afterbody screw in main locking hole, continue to screw the locking screw and can accomplish the taut assembly of connection handle; when the connecting handle is required to be disassembled, the locking screw is reversely rotated through the inner hexagonal wrench, the head of the locking screw can be abutted to the accommodating cavity to be far away from the side wall of the connecting handle, the locking screw continues to be rotated, the connecting handle can be pushed away from the inserting hole, and the disassembling efficiency can be improved. The utility model discloses simple structure, because ka tai nut, locking screw and connect the handle all assemble from the one end of handle of a knife body, and the handle hole diameter that sets up in the middle part of the handle of a knife body is less than locking screw's external diameter, therefore when the handle hole diameter is fixed, can adopt locking screw of great diameter to improve the locking force and the joint strength who connects the handle, realize the improvement of butt joint handle locking force and joint strength under the circumstances that does not influence handle of a knife body rigidity promptly, in the actual production course of working, the length of part handle of a knife body can reach 350mm, therefore, it is especially important to improve the rigidity of handle of a knife body through restricting the handle hole diameter; the thread turning direction of the clamping table nut is opposite to that of the locking screw, so that the clamping table nut can be prevented from loosening, and the overall stability of assembly can be improved; the clamping groove is convenient for workers to install or disassemble the clamping nut; the splicing section is a triangular pyramid platform and has the characteristics of better torque transmission performance and looseness prevention; the positioning end face is matched with the positioning face of the body, so that the overall rigidity of the split type knife handle is further improved, and the precision retentivity is good.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a split type handle of a knife, includes handle of a knife body, connects handle and locking screw, the spliced eye that is used for connecting the connection handle is offered to handle of a knife body one end, the mounting hole that is used for connecting the lathe main shaft is offered to the handle of a knife body other end, its characterized in that, the handle of a knife body still has offered supplementary locking hole in spliced eye the inner, supplementary locking hole threaded connection has a ka tai nut, a cross-under hole has been offered at ka tai nut middle part, the cross-under hole diameter is less than locking screw's head diameter, cross-under hole diameter is greater than or equal to locking screw's external diameter of screw, the handle of a knife body is equipped with the holding chamber that is used for holding locking screw head portion in the one end that the spliced eye was kept away from to ka tai nut, locking screw head portion is provided with the locking draw-in groove, the external diameter of locking draw-in groove is less than locking screw's external diameter, the handle of a knife body middle part offers the handle of intercommunication mounting hole and holding chamber, the diameter and the external diameter looks adaptation of locking draw-in groove.
2. The split type knife handle according to claim 1, wherein an annular groove is formed between the insertion hole and the auxiliary locking hole, an annular clamping step is arranged at one end, close to the insertion hole, of the clamping platform nut, the outer diameter of the annular clamping step is larger than that of the auxiliary locking hole, and the outer diameter of the annular clamping step is smaller than that of the annular groove.
3. The split tool shank according to claim 2, wherein the thread direction of the chuck nut is opposite to the thread direction of the locking screw.
4. The split type knife handle according to claim 1, wherein the end surface of the clamping table nut close to the auxiliary locking hole is provided with a plurality of clamping grooves.
5. The split tool shank according to claim 4, wherein the plurality of snap grooves are equiangularly distributed about an axis of the chuck nut.
6. The split type knife handle according to claim 1, wherein the insertion section of the connecting handle inserted into the insertion hole is a triangular pyramid, three side surfaces of the insertion section of the connecting handle are convex arc surfaces, and the shape of the insertion hole is matched with that of the insertion section of the connecting handle.
7. The split type knife handle according to claim 6, wherein the connecting handle is provided with a positioning end face at the root of the insertion section, and the knife handle body is provided with a body positioning face attached to the positioning end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222382395.9U CN217941891U (en) | 2022-09-07 | 2022-09-07 | Split type handle of a knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222382395.9U CN217941891U (en) | 2022-09-07 | 2022-09-07 | Split type handle of a knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217941891U true CN217941891U (en) | 2022-12-02 |
Family
ID=84212186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222382395.9U Active CN217941891U (en) | 2022-09-07 | 2022-09-07 | Split type handle of a knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217941891U (en) |
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2022
- 2022-09-07 CN CN202222382395.9U patent/CN217941891U/en active Active
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