CN219235000U

CN219235000U - Blade basal plane grinding fixture convenient to dismantle

Info

Publication number: CN219235000U
Application number: CN202223609854.9U
Authority: CN
Inventors: 刘天; 贺鑫; 储永代; 赵丽丽; 明龙贵
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-06-23
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses a blade basal plane grinding fixture convenient to detach, which comprises a fixture body and a positioning pin, wherein the upper surface and the lower surface of the fixture body are mutually parallel, a plurality of annular clearance sinking tables are arranged on the upper surface of the fixture body, a columnar positioning table is formed in the central area of each clearance sinking table, a positioning inner hole is arranged on the upper positioning plane of each positioning table, the positioning pin is arranged in the positioning inner hole when in operation, the positioning pin is in interference fit with the positioning inner hole, the blade positioning part of the positioning pin is arranged above the upper positioning plane of each positioning table, the basal plane of a blade to be ground is upwards arranged in the blade positioning part of the positioning pin, the screw hole plane of the blade to be ground is in positioning fit with the upper positioning plane of each positioning table, the basal plane of the blade to be ground is arranged above the blade positioning part, and the upper surface of the blade to be ground is arranged in each clearance sinking table.

Description

Blade basal plane grinding fixture convenient to dismantle

Technical Field

The utility model mainly relates to the field of metal cutting tools, in particular to a blade base surface grinding clamp convenient to detach.

Background

In order to improve the cutting performance of a numerical control blade product, the groove type design of the numerical control blade is generally complex, the tip of the blade is in an asymmetric structure, the groove type of the blade except for a screw hole part is in a three-dimensional structure, and certain problems exist in the base surface grinding of the blade: in the prior art, the common method is to adopt a 'planetary disc' structure clamp to process and produce the blades on a large scale, namely, limit a plurality of blades through the 'planetary disc' clamp, then position the blades on the blades by using a hard cover plate, and then process and grind the bottom surfaces of the blades; the other method is to process the positioning surface of the fixture by using the electrode, so that the knife slot of the blade is attached to the fixture for positioning, the knife tip of the blade avoids the positioning surface, the method does not generate the defects of knife tip breakage, base surface grinding inclination and the like, the qualification rate is higher, but the manufacturing cost of the fixture is higher, the disassembly is unchanged, and the processing efficiency of the blade is low.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the blade base surface grinding clamp which is simple in structure, high in processing efficiency, high in product qualification rate and convenient to disassemble and assemble.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a blade basal plane grinding anchor clamps convenient to dismantle, includes anchor clamps body and locating pin, the upper surface and the lower surface of anchor clamps body are parallel to each other, a plurality of annular clearance sunk tables have been seted up on the upper surface of anchor clamps body, clearance sunk table central zone forms columnar location platform, the location hole has been seted up on the last locating plane of location platform, during operation, will the locating pin is packed in the location hole, the locating pin with location hole interference fit, just the blade locating part of locating pin is located the last locating plane top of location platform, will wait to grind the basal plane of blade up pack into the blade locating part of locating pin, wait to grind the screw hole plane of blade with the last locating plane location cooperation of location platform, wait to grind the basal plane of blade and be located blade locating part top, wait to grind the blade upper surface of blade and be located in the clearance sunk table.

As a further improvement of the above technical scheme:

and the blade inner hole of the blade to be ground is in clearance fit with the blade positioning part.

The locating inner hole sequentially comprises a clearance cylindrical surface, a transition conical surface, an interference cylindrical surface and a bottom hole from top to bottom, the locating pin sequentially comprises an outer cylindrical surface and an installation conical surface from top to bottom, a necking surface is further arranged on the outer cylindrical surface, the outer cylindrical surface is in interference fit with the interference cylindrical surface during operation, the clearance cylindrical surface, the transition conical surface and the outer cylindrical surface are in clearance fit, the installation conical surface is located in the interference cylindrical surface, and the necking surface is located above the upper surface of the clamp body.

The length of the installation conical surface is L1, the cone angle is beta, and the requirements are satisfied: l1 is less than or equal to 0.3mm, and beta is less than or equal to 30 degrees.

The diameter of the outer cylindrical surface is D1, the diameter of the necking surface is D2, and the following conditions are satisfied: D1-D2 which is more than or equal to 0.1mm and less than or equal to 1mm, wherein the diameter of the blade inner hole of the blade to be ground is D3, and the requirements are satisfied: D3-D1 is more than or equal to 0.01mm and less than or equal to 0.2mm.

The diameter of the interference cylindrical surface is D4, and the interference cylindrical surface is as follows: D1-D4 is more than or equal to 0mm and less than or equal to 0.03mm, the distance between the interference cylindrical surface and the upper positioning plane is L2, and the length of the positioning table is L3, so that the following conditions are satisfied: L2-L3 is more than or equal to 0.

The outer diameter of the clearance sinking table is D5, the diameter of the circumscribed circle of the blade to be ground is D6, and the requirements are satisfied: d6 < D5, the depth of the clearance sinking table is L4, and the distance between the tip of the blade to be ground and the screw hole plane is L5, which should satisfy: l5 < L4.

The side of anchor clamps body is equipped with transmission connecting portion, and a plurality of keep away empty platform is a plurality of circular edges anchor clamps body circumference evenly distributed.

Compared with the prior art, the utility model has the advantages that:

according to the blade basal plane grinding clamp convenient to detach, when the blade basal plane to be ground is ground, the basal plane of the blade to be ground is upwards installed into the blade positioning part of the positioning pin, the screw hole plane of the blade to be ground is matched with the upper positioning plane of the positioning table, the screw hole plane in the middle of the upper surface where the cutter point is located participates in positioning, the cutter point area is located in the clearance sinking table and does not contact any part, the cutter point is not broken, the product qualification rate is improved, the clamp body is provided with the plurality of clearance sinking tables and is provided with the plurality of positioning pins, the plurality of blade basal planes to be ground can be ground at the same time, the production efficiency is greatly improved, the clamp structure is simple and reliable, and the installation and the disassembly of the blade to be ground are very convenient.

Drawings

Fig. 1 is a perspective view of a tool holder for grinding a base surface of a blade according to the present utility model, which is easy to be disassembled.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a front view of the easy-to-remove blade base grinding jig of the present utility model.

Fig. 4 is a B-B view of fig. 3.

Fig. 5 is a partial enlarged view of fig. 4.

Fig. 6 is a schematic view of the structure of the locating pin of the easy-to-disassemble blade base grinding jig of the present utility model.

Fig. 7 is a schematic view of another embodiment of a locating pin of the easy-to-remove blade-base grinding jig of the present utility model.

Fig. 8 is a front view of an insert to be ground.

Fig. 9 is a side view of a blade to be sharpened.

The reference numerals in the drawings denote:

1. a clamp body; 11. an upper surface; 12. a lower surface; 13. a clearance sinking platform; 14. a positioning table; 141. an upper positioning plane; 15. positioning an inner hole; 151. a clearance cylindrical surface; 152. a transitional conical surface; 153. an interference cylindrical surface; 154. a bottom hole; 16. a transmission connection; 2. positioning pins; 21. a blade positioning portion; 22. an outer cylindrical surface; 23. installing a conical surface; 24. necking surfaces; 4. a blade to be ground; 41. a base surface; 42. screw hole planes; 43. the upper surface of the blade; 44. a blade inner bore; 45. and (5) externally connecting a circle.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific examples.

In the description of the present utility model, it should be noted that, the terms "center," "upper," "lower," "horizontal," "inner," "outer," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, rather than indicate or imply that the apparatus or elements being referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present utility model.

Fig. 1 to 6 show an embodiment of a tool base surface grinding jig for easy disassembly according to the present utility model, which comprises a jig body 1 and a positioning pin 2, wherein the upper surface 11 and the lower surface 12 of the jig body 1 are parallel to each other, a plurality of annular clearance sinking tables 13 are provided on the upper surface 11 of the jig body 1, a columnar positioning table 14 is formed in the central area of the clearance sinking tables 13, a positioning inner hole 15 is provided on an upper positioning plane 141 of the positioning table 14, in operation, the positioning pin 2 is loaded into the positioning inner hole 15, the positioning pin 2 is in interference fit with the positioning inner hole 15, and the tool positioning portion 21 of the positioning pin 2 is located above the upper positioning plane 141 of the positioning table 14, the base surface 41 of the tool 4 to be ground is loaded up into the tool positioning portion 21 of the positioning pin 2, the screw hole plane 42 of the tool 4 to be ground is in positioning fit with the upper positioning plane 141 of the positioning table 14, the base surface 41 of the blade 4 to be ground is positioned above the blade positioning part 21, the upper surface 43 of the blade 4 to be ground is positioned in the clearance sinking table 13, when the base surface of the blade 4 to be ground is ground, the base surface 41 of the blade 4 to be ground (the structure of which is shown in figures 8 and 9) is upwards installed into the blade positioning part 21 of the positioning pin 2, the screw hole plane 42 of the blade 4 to be ground is matched with the upper positioning plane 141 of the positioning table 14 in a positioning way, the screw hole plane 42 at the middle part of the upper surface 43 of the blade where the cutter point is positioned participates in positioning, the cutter point area is positioned in the clearance sinking table 13 and does not contact any part, the cutter point is not broken during grinding, the product qualification rate is improved, the clamp body 1 is provided with a plurality of clearance sinking tables 13 and a plurality of positioning pins 2 are installed, the base surface 41 of the blade 4 to be ground can be ground simultaneously, the production efficiency is greatly improved, the clamp is simple and reliable in structure, and the blade 4 to be ground is very convenient to install and detach.

In this embodiment, the insert inner hole 44 of the insert 4 to be ground is in clearance fit with the insert positioning portion 21, so as to ensure that the screw hole plane 42 of each insert 4 to be ground is reliably matched with the upper positioning plane 141 of the positioning table 14, thereby ensuring the stability of the grinding amount.

In this embodiment, the locating inner hole 15 sequentially comprises a clearance cylindrical surface 151, a transition conical surface 152, an interference cylindrical surface 153 and a bottom hole 154 from top to bottom, the locating pin 2 sequentially comprises an outer cylindrical surface 22 and an installation conical surface 23 from top to bottom, the outer cylindrical surface 22 is further provided with a necking surface 24, during operation, the outer cylindrical surface 22 is in interference fit with the interference cylindrical surface 153, the clearance cylindrical surface 151, the transition conical surface 152 and the outer cylindrical surface 22 are in clearance fit, the installation conical surface 23 is located in the interference cylindrical surface 153, the necking surface 24 is partially located above the upper surface 11 of the clamp body 1, the outer cylindrical surface 22 is in interference fit with the interference cylindrical surface 153, the clearance cylindrical surface 151, the transition conical surface 152 and the outer cylindrical surface 22 are in clearance fit, the locating pin 2 is convenient to be installed into the locating inner hole 15 and accurately located, and the necking surface 24 is convenient to detach the locating pin 2 from the clamp body 1.

In this embodiment, the mounting cone 23 has a length L1 and a cone angle β, and in order to facilitate the mounting of the positioning pin 2, it should satisfy: l1.ltoreq.0.3mm, β.ltoreq.30°, l1=0.2mm in this example, β=10°.

In this embodiment, the diameter of the outer cylindrical surface 22 is D1, and the diameter of the necking surface 24 is D2, so that, for facilitating the disassembly of the positioning pin 2 without affecting the overall positioning strength, the following requirements should be satisfied: the diameter of the blade inner hole 44 of the blade 4 to be ground is D3, and in order to ensure that the position of the screw hole plane 42 is less in change relative to the position of the upper positioning plane 141 of the positioning table 14, stable and reliable positioning fit is formed, the following requirements are satisfied: 0.01 mm.ltoreq.D3-D1.ltoreq.0.2 mm, in this example D1=2mm, D2=1.7mm, D3=2.05 mm.

In this embodiment, the diameter of the interference cylindrical surface 152 is D4, so as to ensure that a reliable interference fit is formed and facilitate the disassembly of the positioning pin 2, it should be satisfied that: the distance between the interference cylindrical surface 153 and the upper positioning plane 141 is L2, and the length of the positioning table 14 is L3, so that the accuracy of the shape of the positioning table 14 and the reliability of the upper positioning plane 141 as a positioning reference are ensured, and the following requirements are satisfied: L2-L3.gtoreq.0, in this example D4=1.98 mm, L2=2.5 mm, L3=2.4 mm.

In this embodiment, the outer diameter of the clearance sinking table 13 is D5, and the diameter of the circumcircle 45 of the blade 4 to be ground is D6, which should satisfy the following requirements: d6 < D5, the depth of the clearance sinking table 13 is L4, and the distance between the tip of the blade 4 to be ground and the screw hole plane 42 is L5, which should satisfy: l5 < L4 to ensure that the nose of the blade 4 to be ground is located on the clearance platform 13 and is not in contact with any component during grinding, so as to avoid the breakage of the nose, in this embodiment d5=8mm, d6=6.5mm, l4=2mm, l5=0.5 mm.

In this embodiment, the side surface of the fixture body 1 is provided with a transmission connection portion 16, and the plurality of clearance sinking tables 13 are uniformly distributed along the circumferential direction of the fixture body 1 in a plurality of circles.

In addition to the above embodiment, the structure of the locating pin 2 may be configured as shown in fig. 7, that is, the locating pin 2 is not provided with the necking surface 24, but has the mounting conical surfaces 23 at both ends, which can satisfy the use function of the present utility model, and it is difficult to detach the locating pin 2 only with respect to the present embodiment, as shown in fig. 7.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. The utility model provides a blade base surface grinding anchor clamps convenient to dismantle which characterized in that: including anchor clamps body (1) and locating pin (2), upper surface (11) and lower surface (12) of anchor clamps body (1) are parallel to each other, offer a plurality of cyclic annular clearance heavy platform (13) on upper surface (11) of anchor clamps body (1), clearance heavy platform (13) central zone forms columnar location platform (14), offer location hole (15) on location platform (14) upper locating plane (141), during operation, will locating pin (2) are packed in location hole (15), locating pin (2) with location hole (15) interference fit, just blade location portion (21) of locating pin (2) are located location platform (14) upper locating plane (141) top, will wait to grind base surface (41) of blade (4) up and pack into location pin (2) blade location portion (21), wait to grind screw hole (42) of blade (4) with location platform (14) upper locating plane (141) are located in location platform (4) top of waiting to grind base surface (41) of blade (4).

2. The easy-to-detach blade base grinding jig of claim 1, wherein: the blade inner hole (44) of the blade (4) to be ground is in clearance fit with the blade positioning part (21).

3. The easy-to-detach blade base grinding jig of claim 1, wherein: location hole (15) are from last to including clearance cylinder (151), transition conical surface (152), interference cylinder (153) and bottom opening (154) down in proper order, locating pin (2) are from last to including outer cylinder (22) and installation conical surface (23) down in proper order, still be equipped with necking down face (24) on outer cylinder (22), during operation, outer cylinder (22) with interference cylinder (153) interference fit, clearance cylinder (151), transition conical surface (152) with equal clearance fit of outer cylinder (22), installation conical surface (23) are located in interference cylinder (153), necking down face (24) part are located upper surface (11) top of anchor clamps body (1).

4. A readily removable blade base grinding jig according to claim 3, wherein: the length of the installation conical surface (23) is L1, the cone angle is beta, and the requirements are satisfied: l1 is less than or equal to 0.3mm, and beta is less than or equal to 30 degrees.

5. A readily removable blade base grinding jig according to claim 3, wherein: the diameter of the outer cylindrical surface (22) is D1, and the diameter of the necking surface (24) is D2, so that the following conditions are satisfied: D1-D2 which is more than or equal to 0.1mm and less than or equal to 1mm, wherein the diameter of an inner blade hole (44) of the blade (4) to be ground is D3, and the requirements are as follows: D3-D1 is more than or equal to 0.01mm and less than or equal to 0.2mm.

6. The easy-to-detach blade base grinding jig of claim 5, wherein: the diameter of the interference cylindrical surface (153) is D4, and the following conditions are satisfied: the distance between the interference cylindrical surface (153) and the upper positioning plane (141) is L2, and the length of the positioning table (14) is L3, which is not less than 0mm and not more than 1-D4 and not more than 0.03mm, and the requirements are as follows: L2-L3 is more than or equal to 0.

7. The easy detachable insert base grinding jig according to any one of claims 3 to 6, wherein: the outer diameter of the clearance sinking table (13) is D5, the diameter of an circumscribed circle (45) of the blade (4) to be ground is D6, and the requirements are satisfied: d6 < D5, the depth of the clearance sinking table (13) is L4, and the distance between the tool nose of the blade (4) to be ground and the screw hole plane (42) is L5, so that the following conditions are satisfied: l5 < L4.

8. The easy detachable insert base grinding jig according to any one of claims 3 to 6, wherein: the side of anchor clamps body (1) is equipped with transmission connecting portion (16), a plurality of keep away empty heavy platform (13) are a plurality of circular edges anchor clamps body (1) circumference evenly distributed.