CN217290455U - Special welding assembly structure of fluting locate mode of cutter - Google Patents
Special welding assembly structure of fluting locate mode of cutter Download PDFInfo
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- CN217290455U CN217290455U CN202220242952.4U CN202220242952U CN217290455U CN 217290455 U CN217290455 U CN 217290455U CN 202220242952 U CN202220242952 U CN 202220242952U CN 217290455 U CN217290455 U CN 217290455U
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Abstract
The utility model discloses a slotting positioning type special welding assembly structure of a cutter, which comprises a cutter handle and a blade blank; the knife handle is provided with a straight groove for inserting a blade blank; a positioning bulge is arranged in the middle of the straight groove of the tool handle to divide the straight groove into a first straight groove and a second straight groove; in the first straight groove and the second straight groove, each straight groove is respectively provided with at least one tool withdrawal groove which is sunken along the groove wall and is used for accommodating soldering paste when the blade blank is welded with the tool holder; and the bottom end of the blade blank is provided with a positioning groove matched with the positioning bulge of the knife handle in a matching way. The utility model discloses can restrict the deflection volume of blade blank and handle of a knife in welding process to effectively improve blade blank and handle of a knife welded straightness and axiality of hanging down, can improve welding strength simultaneously, finally improve welding finished product qualification rate to more than 90%.
Description
Technical Field
The utility model relates to a cutter manufacturing and designing technical field especially relates to a special assembly structure of welding of fluting locate mode of cutter.
Background
Cutting tools are tools used in machining for cutting operations. A straight-edge knife is one of cutting tools, as shown in fig. 1 to 3, in the manufacturing process of the straight-edge knife, a blade blank 200 and a handle 100 need to be fixed together by welding, the fitting accuracy of the blade blank 200 and the handle 100 of the straight-edge knife in the prior art is mainly controlled by a welding fitting groove 101 on the handle 100 during welding, because the welding fitting groove 101 in the prior art is of a straight groove structure, the width of the straight groove 101 is slightly larger than the thickness of the blade blank 200, because the fitting clearance between the blade blank 200 and the handle 100 is larger, effective positioning is lacked during welding of the blade blank 200 and the handle 100 after assembly, and because of different dosages of solder paste M filled between the blade blank 200 and the handle 100, thermal deformation amounts generated by high-temperature cooling have certain differences, and finally the perpendicularity and coaxiality of the blade blank 200 and the handle 100 welded to the handle are poor, the positive deviation delta 1 and the lateral deviation delta 2 between the top middle point of the blade blank 200 and the central axis of the tool holder 100 can respectively reach more than 0.5mm (as shown in fig. 4 and 5), and the qualification rate of a welded finished product is less than 10%. And an effective welding process is not available at present to directly solve the problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, a special assembly structure of welding of fluting locate mode of cutter is provided, through set up special assembly structure of welding on blade blank and handle of a knife, can realize the effective positioning after blade blank and the assembly of handle of a knife, can restrict deflection and the offset that blade blank and handle of a knife produced in welding process from this, make the top mid point of blade blank and the central axis's of handle of a knife forward deviation delta 1 and lateral deviation delta 2 all reduce to below 0.03mm, and then effectively improve blade blank and handle of a knife welded straightness and axiality of hanging down, can improve welding strength simultaneously, finally improve welding finished product qualification rate to more than 90%.
The utility model provides a technical scheme that its technical problem adopted is: a slotting positioning type special welding assembly structure for a cutter comprises a cutter handle and a blade blank; the knife handle is provided with a straight groove for inserting a blade blank; a positioning bulge is arranged in the middle of the straight groove of the tool handle to divide the straight groove into a first straight groove and a second straight groove; in the first straight groove and the second straight groove, each straight groove is respectively provided with at least one tool withdrawal groove which is sunken along the groove wall and is used for accommodating soldering paste when the blade blank is welded with the tool holder; and the bottom end of the blade blank is provided with a positioning groove matched with the positioning bulge of the knife handle in a matching way.
The positioning bulge of the knife handle is positioned in the middle of the knife handle, the number of the tool withdrawal grooves is four, the first tool withdrawal groove and the second tool withdrawal groove are positioned in the first straight groove, and the third tool withdrawal groove and the fourth tool withdrawal groove are positioned in the second straight groove; the thickness of blade blank is D, and the height of blade blank is H to satisfy following relational expression: d is more than or equal to 1.6 mm; H/D is less than or equal to 30.
The width of the first straight groove of the cutter handle is 0.005mm to 0.01mm larger than the thickness of the blade blank, the depth of the first straight groove is 1.5 times of the thickness of the blade blank, and the first straight groove is symmetrical about the horizontal center line of the cutter handle along the direction of the straight groove.
The size of the second straight groove of the knife handle is completely consistent with that of the first straight groove, the second straight groove and the first straight groove are symmetrical about the central axis of the knife handle, and the second straight groove and the first straight groove are symmetrical about the horizontal central line of the knife handle in the direction perpendicular to the straight groove.
The height of the positioning bulge of the knife handle is 0.9 time of the thickness of the blade blank, the length of the bottom of the positioning bulge is 1.8 times of the thickness of the blade blank, the width of the positioning bulge is equal to that of the first straight groove, the taper angle formed by two side faces of the positioning bulge is 30 degrees, the positioning bulge structure is symmetrical about the central axis of the knife handle, and the positioning bulge structure is symmetrical about the horizontal central line of the knife handle along the direction of the straight groove.
The first tool withdrawal groove of the tool handle is connected with the first straight groove, the depth of the first tool withdrawal groove is equal to that of the first straight groove, the width of the first tool withdrawal groove is equal to that of the first straight groove, and the length of the first tool withdrawal groove is greater than or equal to 0.6 times of that of the first straight groove.
The size in second tool withdrawal groove, third tool withdrawal groove and the fourth tool withdrawal groove of handle of a knife respectively with the size in first tool withdrawal groove is unanimous, first tool withdrawal groove with the horizontal center line symmetry along the straight flute direction of handle of a knife is regarded as to the position in second tool withdrawal groove, first tool withdrawal groove with the horizontal center line symmetry along the perpendicular to straight flute direction of the position in third tool withdrawal groove is regarded as to the handle of a knife, the second tool withdrawal groove with the horizontal center line symmetry along the perpendicular to straight flute direction of the position in fourth tool withdrawal groove is regarded as to the handle of a knife, the third tool withdrawal groove with the horizontal center line symmetry along the straight flute direction of the position in fourth tool withdrawal groove is regarded as to the handle of a knife.
The depth of the positioning groove of the blade blank is larger than or equal to the height of the positioning bulge of the cutter handle, the width of the opening of the positioning groove is equal to the length of the bottom of the positioning bulge, the inner cone included angle of the positioning groove is 0-30 degrees, and the positioning groove is symmetrical about the central line of the blade blank.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model adopts the positioning bulge arranged in the middle of the straight groove of the knife handle to divide the straight groove into a first straight groove and a second straight groove; in the first straight groove and the second straight groove, each straight groove is respectively provided with at least one tool withdrawal groove which is sunken along the groove wall and is used for accommodating soldering paste when the blade blank is welded with the tool holder; and the bottom end of the blade blank is provided with a positioning groove matched with the positioning bulge of the knife handle in a matching way. The utility model discloses a set up the special assembly structure of welding on blade blank and handle of a knife, can realize the effective positioning after blade blank and the assembly of handle of a knife, can restrict deflection and the offset that blade blank and handle of a knife produced in welding process from this, make the top mid point of blade blank and the central axis's of handle of a knife forward deviation delta 1 and lateral deviation delta 2 all reduce to below 0.03mm, and then effectively improve blade blank and handle of a knife welded straightness and axiality hang down, can improve welding strength simultaneously, finally improve welding finished product qualification rate more than 90%.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment of the present invention.
Drawings
FIG. 1 is a schematic perspective view of a blade blank and shank welded finish using a prior art weld fit arrangement;
FIG. 2 is a perspective view of a prior art tool shank;
FIG. 3 is a perspective view of a prior art blade blank;
FIG. 4 is a perspective view of a blade blank and tool shank with weld deflection and offset in a direction perpendicular to the weld mating groove;
FIG. 5 is a perspective view of a blade blank and tool shank with weld deflection along the weld mating groove;
fig. 6 is a schematic perspective view of the blade blank and the tool holder integrally assembled according to the embodiment of the present invention;
FIG. 7 is an elevation view of an integral assembly of a blade blank and handle according to an embodiment of the present invention;
FIG. 8 is a left side view of the blade blank and handle integrally assembled in accordance with an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a tool holder according to an embodiment of the present invention;
fig. 10 is a perspective view of a blade blank according to an embodiment of the present invention;
FIG. 11 is a front cross-sectional view of a tool shank of an embodiment of the present invention;
FIG. 12 is a top view of a tool shank of an embodiment of the present invention;
FIG. 13 is an elevation view of a tool shank of an embodiment of the present invention;
FIG. 14 is a left side view of a handle of an embodiment of the present invention;
fig. 15 is an enlarged partial view of a blade blank according to an embodiment of the present invention;
fig. 16 is a schematic view of the process of assembling and welding the blade blank to the handle according to an embodiment of the present invention.
In the figure: 1. a knife handle; 2. a blade blank; 11. a straight groove; 12. a first tool withdrawal groove; 13. a second tool withdrawal groove; 14. a third tool withdrawal groove; 15. a fourth tool withdrawal groove; 16. a first straight groove; 17. a second straight groove; 18. positioning the projection; 21. positioning a groove; A. the central axis of the knife handle; B. the horizontal center line of the knife handle is vertical to the direction of the straight groove; C. the horizontal center line of the knife handle is along the direction of the straight groove; D. the thickness of the blade blank; E. the center line of the blade blank; l, the width of the straight groove; l1, bottom length of locating projection; l2, width of first straight slot; l3, width of first relief groove; l4, length of first relief groove; l5, notch width of the positioning groove; H. the height of the blade blank; h1, depth of first straight groove; h2, height of the locating boss; h3, depth of positioning groove; m, soldering paste; delta 1, positive deviation of the top middle point of the blade blank and the central axis of the tool handle; delta 2, the lateral deviation of the top middle point of the blade blank and the central axis of the tool holder; 100. the handle of the straight-edged knife in the prior art; 101. a prior art weld mating groove; 200. the blade blank of the prior art straight-edged knife.
Detailed Description
Examples
Referring to fig. 6 to 16, the special assembly structure for slotting and positioning type welding of the cutter of the present invention includes a handle 1 and a blade blank 2; the cutter handle 1 is provided with a straight groove 11 for inserting a blade blank; a positioning bulge 18 is arranged in the middle of the straight groove 11 of the tool holder 1 to divide the straight groove 11 into a first straight groove 16 and a second straight groove 17; in the first straight groove 16 and the second straight groove 17, each straight groove is respectively provided with at least one tool withdrawal groove which is sunken along the groove wall and is used for accommodating soldering paste M when the blade blank is welded with the tool holder; the bottom end of the blade blank 2 is provided with a positioning groove 21 matched with the positioning bulge 18 of the knife handle 1 in a matching way.
In this embodiment, the positioning protrusion 18 of the tool holder is located at the center of the tool holder 1, the number of the tool withdrawal grooves is four, the first tool withdrawal groove 12 and the second tool withdrawal groove 13 are located in the first straight groove 16, and the third tool withdrawal groove 14 and the fourth tool withdrawal groove 15 are located in the second straight groove 17; the thickness of the blade blank 2 is D, the height of the blade blank 2 is H, and the following relational expression is satisfied: d is more than or equal to 1.6 mm; H/D is less than or equal to 30.
Referring to fig. 9, 11 and 12, in the present embodiment, the width L2 of the first straight groove 16 of the holder 1 is 0.005mm to 0.01mm larger than the thickness D of the insert blank 2, the depth H1 of the first straight groove 16 is 1.5 times the thickness D of the insert blank 1, and the first straight groove 16 is symmetrical about the horizontal center line C of the holder in the direction of the straight groove.
In this embodiment, the size of the second straight groove 17 of the tool holder 1 completely matches the size of the first straight groove 16, the positions of the second straight groove 17 and the first straight groove 16 are symmetrical with respect to the central axis a of the tool holder, and the positions of the second straight groove 17 and the first straight groove 16 are symmetrical with respect to the horizontal center line B of the tool holder along the direction perpendicular to the straight grooves.
In this embodiment, the height H2 of the positioning protrusion 18 of the tool holder 1 is 0.9 times the thickness D of the blade blank 1, the length L1 of the bottom of the positioning protrusion 18 is 1.8 times the thickness D of the blade blank 2, that is, the sizes of L1 and H2 satisfy L1/H2 being 2; the width of the positioning protrusion 18 is equal to the width L2 of the first straight groove 16, the taper angle formed by the two side surfaces of the positioning protrusion 18 is 30 degrees, the structure of the positioning protrusion 18 is symmetrical about the central axis a of the tool holder, and the structure of the positioning protrusion 18 is symmetrical about the horizontal central line C of the tool holder along the direction of the straight groove.
In this embodiment, the first relief groove 12 of the tool holder is connected to the first straight groove 16, the depth of the first relief groove 12 is equal to the depth H1 of the first straight groove 16, the width L3 of the first relief groove 12 is equal to the width L2 of the first straight groove 16, the length L4 of the first relief groove 12 is greater than or equal to 0.6 times of the width L2 of the first straight groove 16, and L4 is greater than or equal to 0.6L 2.
In this embodiment, the sizes of the second relief groove 13, the third relief groove 14, and the fourth relief groove 15 of the tool holder are respectively the same as the size of the first relief groove 12, the positions of the first relief groove 12 and the second relief groove 13 are symmetric with respect to a horizontal center line C of the tool holder along the straight groove direction, the positions of the first relief groove 12 and the third relief groove 13 are symmetric with respect to a horizontal center line B of the tool holder along the direction perpendicular to the straight groove direction, the positions of the second relief groove 13 and the fourth relief groove 15 are symmetric with respect to a horizontal center line B of the tool holder along the direction perpendicular to the straight groove direction, and the positions of the third relief groove 14 and the fourth relief groove 15 are symmetric with respect to the horizontal center line C of the tool holder along the direction perpendicular to the straight groove direction.
After the blade blank 2 and the handle 1 are assembled, the first relief groove 12, the second relief groove 13, the third relief groove 14 and the fourth relief groove 15 can be used as containers of soldering paste M, so that the blade blank 2 and the handle 1 can have enough soldering paste dosage during welding, and further the welding strength of the blade blank 2 and the handle 1 can be ensured.
Referring to fig. 10 and 15, in this embodiment, the depth H3 of the positioning groove 21 of the blade blank 2 is greater than or equal to the height H2 of the positioning protrusion 18 of the tool holder 1, that is, H3 is greater than or equal to H2, the width L5 of the opening of the positioning groove 21 is equal to the length L1 of the bottom of the positioning protrusion 18, the inner cone included angle of the positioning groove 21 is 0 ° to 30 °, and the positioning groove 21 is symmetrical with respect to the center line E of the blade blank.
The utility model discloses a special assembly structure of welding of fluting locate mode of cutter, first straight flute 16 on the handle of a knife 1, second straight flute 17, the protruding 18 width in location equals all to be L2, L2 size is 0.005mm to 0.01mm bigger than blade blank 2 thickness D, such size width has guaranteed that blade blank 2 can assemble smoothly on handle of a knife 1, simultaneously effectual control the fit clearance between blade blank 2 and the handle of a knife 1 again, the degree of depth of first straight flute 16 and second straight flute 17 equals all to be H1 and H1 is 1.5 times of the thickness D of blade blank 2, such degree of depth combines width size L2's use, handle of a knife deflection volume and the offset that produce when can effectively restrict blade blank 2 and handle of a knife 1 and weld after the assembly, make the top mid point of blade blank 2 and the central axis's of handle of a knife 1 forward deviation delta 1 reduce to below 0.03 mm.
Referring to fig. 5 to 16, the height of the positioning protrusion 18 on the tool holder 1 is H2, the length of the bottom is L1, and the dimensions of L1 and H2 satisfy L1/H2 being 2, such length-height ratio can ensure that the positioning protrusion 18 has certain structural strength, the taper angle formed by the two side surfaces of the positioning protrusion 18 is 30 °, the inner cone included angle of the positioning groove 21 on the blade blank 2 is 0 to 30 °, the depth of the positioning groove 21 on the blade blank 2 is H3, the notch width is L5, H3 is greater than or equal to H2, and L5 being L1, such structural dimension combination facilitates the assembly operation of the blade blank 2 and the tool holder 1, and can realize the assembly positioning of the blade blank 2 and the tool holder 1, and through the cooperation between the positioning protrusion 18 on the tool holder 1 and the positioning groove 21 on the blade blank 2, the deflection and offset generated when the blade blank 2 and the tool holder 1 are welded after assembly can be effectively limited, the lateral deviation delta 2 between the top middle point of the blade blank 2 and the central axis of the tool holder 1 is reduced to be less than 0.03 mm.
The first tool withdrawal groove 12, the second tool withdrawal groove 13, the third tool withdrawal groove 14 and the fourth tool withdrawal groove 15 on the tool holder 1 have completely identical dimension structures, the width is L3, the depth is H1 and the length is L4, wherein L4 is more than or equal to 0.6L2 (namely the length L4 is more than or equal to 0.6 times of the width L2 of the first straight groove 16), the first tool withdrawal groove 12 and the second tool withdrawal groove 13 are directly connected with the first straight groove 16, the third tool withdrawal groove 14 and the fourth tool withdrawal groove 15 are directly connected with the second straight groove 17, the structural combination can ensure that the positioning bulge 18, the first tool withdrawal groove 12, the second tool withdrawal groove 13, the third tool withdrawal groove 14, the fourth tool withdrawal groove 15, the first straight groove 16 and the second straight groove 17 are in right-angle transition, the arc transition allowance formed by processing the first straight groove 16 and the second straight groove 17 is completely removed, so that the blank between the blade matching surface 2 and the tool holder 1 is fully attached, and the blank is assembled after the blade 2 and the tool holder 1 are assembled, the first tool withdrawal groove 12, the second tool withdrawal groove 13, the third tool withdrawal groove 14 and the fourth tool withdrawal groove 15 can be used as containers of soldering paste M, so that the blade blank 2 and the handle 1 are guaranteed to have enough soldering paste dosage during welding, and the welding strength of the blade blank 2 and the handle 1 is further guaranteed.
The utility model discloses a set up the special assembly structure of welding on blade blank and handle of a knife, can effectively restrict deflection and the offset that blade blank 2 and handle of a knife 1 produced in welding process for the top mid point of blade blank 2 and the central axis's of handle of a knife 1 forward deviation delta 1 and lateral deviation delta 2 all reduce to below 0.03mm, and then effectively improve blade blank 2 and 1 welded straightness and axiality of hanging down of handle of a knife, welding strength can be reinforceed simultaneously, finally improve welding finished product qualification rate to more than 90%.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. A slotting positioning type special welding assembly structure for a cutter comprises a cutter handle and a blade blank; the knife handle is provided with a straight groove for inserting a blade blank; the method is characterized in that: a positioning bulge is arranged in the middle of the straight groove of the tool handle to divide the straight groove into a first straight groove and a second straight groove; in the first straight groove and the second straight groove, each straight groove is respectively provided with at least one tool withdrawal groove which is sunken along the groove wall and is used for accommodating soldering paste when the blade blank is welded with the tool holder; and the bottom end of the blade blank is provided with a positioning groove matched with the positioning bulge of the knife handle in a matching way.
2. The grooving positioning type special welding assembling structure of the cutter according to claim 1, wherein: the positioning bulge of the knife handle is positioned in the middle of the knife handle, the number of the tool withdrawal grooves is four, the first tool withdrawal groove and the second tool withdrawal groove are positioned in the first straight groove, and the third tool withdrawal groove and the fourth tool withdrawal groove are positioned in the second straight groove; the thickness of blade blank is D, and the height of blade blank is H to satisfy following relational expression: d is more than or equal to 1.6 mm; H/D is less than or equal to 30.
3. The grooving positioning type special welding assembling structure of the cutter according to claim 2, wherein: the width of the first straight groove of the cutter handle is 0.005mm to 0.01mm larger than the thickness of the blade blank, the depth of the first straight groove is 1.5 times of the thickness of the blade blank, and the first straight groove is symmetrical about the horizontal center line of the cutter handle along the direction of the straight groove.
4. The grooving positioning type welding special-purpose assembling structure of a tool according to claim 3, wherein: the size of the second straight groove of the knife handle is completely consistent with that of the first straight groove, the second straight groove and the first straight groove are symmetrical about the central axis of the knife handle, and the second straight groove and the first straight groove are symmetrical about the horizontal central line of the knife handle in the direction perpendicular to the straight groove.
5. The grooving positioning type welding special-purpose assembling structure of a tool according to claim 3, wherein: the height of the positioning bulge of the knife handle is 0.9 time of the thickness of the blade blank, the length of the bottom of the positioning bulge is 1.8 times of the thickness of the blade blank, the width of the positioning bulge is equal to that of the first straight groove, the taper angle formed by two side faces of the positioning bulge is 30 degrees, the positioning bulge structure is symmetrical about the central axis of the knife handle, and the positioning bulge structure is symmetrical about the horizontal central line of the knife handle along the direction of the straight groove.
6. The grooving positioning type special welding assembling structure of the cutter according to claim 4, wherein: the first tool withdrawal groove of the tool handle is connected with the first straight groove, the depth of the first tool withdrawal groove is equal to that of the first straight groove, the width of the first tool withdrawal groove is equal to that of the first straight groove, and the length of the first tool withdrawal groove is greater than or equal to 0.6 times of that of the first straight groove.
7. The grooving positioning type welding special-purpose assembling structure of a tool according to claim 6, wherein: the size in the second tool withdrawal groove, the third tool withdrawal groove and the fourth tool withdrawal groove of handle of a knife respectively with the size in first tool withdrawal groove is unanimous, first tool withdrawal groove with the horizontal central line symmetry along the straight flute direction of handle of a knife is regarded as to the position in second tool withdrawal groove, first tool withdrawal groove with the horizontal central line symmetry along the perpendicular to straight flute direction of handle of a knife is regarded as to the position in third tool withdrawal groove, the second tool withdrawal groove with the horizontal central line symmetry along the perpendicular to straight flute direction of handle of a knife is regarded as to the position in fourth tool withdrawal groove, the third tool withdrawal groove with the horizontal central line symmetry along the straight flute direction of handle of a knife is regarded as to the position in fourth tool withdrawal groove.
8. The grooving positioning type special welding assembling structure of the cutter according to claim 1, wherein: the depth of the positioning groove of the blade blank is larger than or equal to the height of the positioning bulge of the cutter handle, the width of the opening of the positioning groove is equal to the length of the bottom of the positioning bulge, the inner cone included angle of the positioning groove is 0-30 degrees, and the positioning groove is symmetrical about the central line of the blade blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220242952.4U CN217290455U (en) | 2022-01-28 | 2022-01-28 | Special welding assembly structure of fluting locate mode of cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220242952.4U CN217290455U (en) | 2022-01-28 | 2022-01-28 | Special welding assembly structure of fluting locate mode of cutter |
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| Publication Number | Publication Date |
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| CN217290455U true CN217290455U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220242952.4U Active CN217290455U (en) | 2022-01-28 | 2022-01-28 | Special welding assembly structure of fluting locate mode of cutter |
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| Country | Link |
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| CN (1) | CN217290455U (en) |
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- 2022-01-28 CN CN202220242952.4U patent/CN217290455U/en active Active
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