Inner cooling tool for cylindrical grinding hollow cut-off knife

Abstract

The utility model relates to an inner cooling tool for a cylindrical grinding hollow cut-off knife, the rear end part of the hollow cut-off knife is of a thin-wall structure, the inner cooling tool comprises a cooling column, and the cooling column is divided into a leading-in section at the front end, an abutting section in the middle and a cooling section at the rear end; the leading-in section of the cooling column penetrates out of the interior of the hollow cutter, the abutting section of the cooling column abuts against the interior of the hollow cutter, and the cooling section of the cooling column is located at the thin-wall structure to be machined of the hollow cutter; the leading-in section of the cooling column is provided with a water inlet pipeline, a water guide cavity is formed in the abutting section of the cooling column, the water inlet pipeline is communicated with the water guide cavity, a plurality of drainage grooves are formed in the outer wall of the cooling column in the axial direction, one end of each drainage groove is communicated with the water guide cavity, and the other end of each drainage groove extends towards the rear end of the cooling column. The cooling column abuts against the thin-wall structure at the rear end of the hollow cutter, the cooling column is communicated with the external high-pressure water pump, and cooling water flows through the outer surface of the cooling column and can cool the hollow cutter in a machining state.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment processing; specifically, the utility model relates to an internal cooling tooling for grinding hollow cutting knives with a cylindrical grinder. Background Art

[0002] The rear end of the hollow cutter has a thin structure. When processing the rear end of the hollow cutter, it is easy to cause product deformation or even damage, which increases the defective rate of the product and increases the production cost. In addition, when processing the rear end of the hollow cutter, heat is generated, and the high temperature will damage the hollow cutter. Utility Model Content

[0003] The utility model aims to provide an internal cooling tool for grinding hollow cutting knives of external cylindrical grinding, which can solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an internal cooling tool for a cylindrical grinding hollow cutting knife, wherein the rear end of the hollow cutting knife is a thin-walled structure, wherein the internal cooling tool for a cylindrical grinding hollow cutting knife comprises: a cooling column,

[0005] The cooling column is divided into a front introduction section, a middle abutment section and a rear cooling section;

[0006] The introduction section of the cooling column passes through the interior of the hollow cutter, the abutting section of the cooling column abuts against the interior of the hollow cutter, and the cooling section of the cooling column is located at the thin-walled structure to be processed of the hollow cutter;

[0007] The inlet section of the cooling column is provided with a water inlet pipe, the interior of the abutting section of the cooling column is provided with a water guide cavity, the water inlet pipe is communicated with the water guide cavity, the outer wall of the cooling column is provided with a plurality of drainage grooves along the axial direction, one end of the drainage groove is communicated with the water guide cavity, and the other end of the drainage groove extends toward the rear end of the cooling column and extends to the space outside the hollow cutting knife.

[0008] In the aforementioned external cylindrical grinding hollow cutting blade internal cooling tooling, optionally, the outer wall of the abutment section of the cooling column is provided with a water guide groove along the radial direction, the water guide cavity is connected with the water guide groove, and the water guide groove is connected with the drainage groove.

[0009] In the aforementioned cylindrical grinding hollow cutting blade internal cooling tooling, optionally, a plurality of water pipes are provided in the abutting section of the cooling column and are connected to the drainage grooves one by one.

[0010] In the aforementioned external cylindrical grinding hollow cutting blade internal cooling tooling, optionally, the drainage groove is arranged around the outer wall of the cooling column.

[0011] In the aforementioned cylindrical grinding hollow cutter internal cooling tooling, optionally, a cavity is provided inside the cooling column along the axial direction, and steel balls are arranged in the cavity.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] According to the utility model of the internal cooling tooling for cylindrical grinding of hollow cutting blades, the cooling column supports the thin-wall structure of the rear end of the hollow cutting blade, and at the same time, the cooling column is connected to an external high-pressure water pump, and cooling water flows through the outer surface of the cooling column, so as to cool the hollow cutting blade in the processing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the internal cooling tooling for grinding hollow cutting knives with a cylindrical grinder according to the utility model;

[0015] Figure 2 It is a structural schematic diagram of the external cylindrical grinding hollow cutting knife of the utility model;

[0016] Figure 3 It is a schematic structural diagram of a cooling column of the utility model;

[0017] Figure 4 It is a cross-sectional view of the hollow cutting knife of the external cylindrical grinding of the utility model;

[0018] Figure 5 It is a cross-sectional view of the cooling column of the utility model.

[0019] In the figure: 1. hollow cutter; 2. cooling column; 3. water inlet pipe; 4. water guide cavity; 5. drainage groove; 6. water guide groove; 7. water guide pipe; 8. cavity; 9. steel ball. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. The terms "first", "second" and similar words used in the description of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components, and therefore cannot be understood as limitations on the present invention.

[0022] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0023] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0024] Figures 1 to 3 It is a structural schematic diagram of a hollow cutting knife 1 in an involute tooling of a grinding and grooving knife of the utility model. Figure 1 It is a schematic diagram of the use of the two, in which a hollow cutter 1 and a cooling column 2 with a portion of the hollow cutter 1 exposed are shown. Figure 2 For hollow cutting knife 1, Figure 3 It is a schematic diagram of the structure of cooling column 2.

[0025] like Figures 2 to 5 As shown, the cylindrical grinding hollow cutter internal cooling tooling includes: a cooling column 2. The rear end of the hollow cutter 1 is a thin-walled structure, and the hollow cutter 1 is sleeved on the outside of the cooling column 2 for use. The cooling column 2 is divided into a front introduction section, a middle abutment section, and a rear cooling section.

[0026] When in use, the introduction section passes through the interior of the hollow cutter 1, the abutting section abuts against the interior of the hollow cutter 1, and the cooling section is located at the thin-walled structure to be processed of the hollow cutter 1. The cooling column 2 is connected to an external high-pressure water pump, and cooling water flows through the outer surface of the cooling column 2, which can cool the hollow cutter 1 in the processing state.

[0027] A water inlet pipe 3 is provided in the inlet section of the cooling column 2, a water guide cavity 4 is provided inside the abutting section of the cooling column 2, the water inlet pipe 3 is connected with the water guide cavity 4, a plurality of drainage grooves 5 are provided on the outer wall of the cooling column 2 along the axial direction, one end of the drainage groove 5 is connected with the water guide cavity 4, and the other end of the drainage groove 5 extends toward the rear end of the cooling column, preferably, extends to the space outside the hollow cutting knife 1.

[0028] When in use, the cooling column 2 is sleeved inside the hollow cutter 1, and the water inlet pipe 3 on the front end surface of the cooling column 2 is connected to the external high-pressure water pump. After the cooling water enters through the water inlet pipe 3, it flows into the water guide cavity 4 and is then discharged from the drainage groove 5.

[0029] It should be noted that the cooling column 2 may be provided with an extension portion corresponding to the hollow cutter 1 for extending the water inlet pipe 3 to facilitate communication with an external high-pressure water pump.

[0030] Furthermore, a water guide groove 6 is provided on the outer wall of the abutting section of the cooling column 2 in the radial direction, the water guide cavity 4 is connected to the water guide groove 6 through a plurality of water guide pipes 7 , and one end of the drainage groove 5 is connected to the water guide groove 5 .

[0031] Furthermore, the water pipes 7 are connected to the drainage grooves 5 in a one-to-one correspondence.

[0032] Specifically, in this embodiment, the water guide groove 6 is closer to the front end surface of the cooling column 2 than the water guide cavity 4. After the cooling water flows into the water guide cavity 4 from the water inlet pipe 3, it flows into the water guide groove 6 from the water guide pipe 7 and then is discharged from the drainage groove 5.

[0033] Furthermore, the drainage groove 5 is arranged around the outer wall of the cooling column 2, which increases the contact area between the cooling water and the hollow cutter 1, can better exchange heat, cool the hollow cutter 1, and reduce the problem of thin wall burns of the hollow cutter 1.

[0034] Furthermore, a cavity 8 is provided inside the cooling column 2 along the axial direction, and steel balls 9 are arranged in the cavity 8 to play a shock-absorbing role.

[0035] There are two points to be explained about this utility model:

[0036] The outer wall of the cooling section of the cooling column 2 and the hollow cutter 1 are interference fit to ensure that the two can rotate synchronously during the processing;

[0037] The tail of the cooling column 2 is fixed to the cooling column 2 body by welding, that is, after steel balls 9 are arranged and placed in the cavity 8 of the cooling column 2 (the steel balls can move in the cavity 8), the tail of the cooling column 2 is welded to close the cavity 8. Among them, the extension of the cooling column 2 corresponding to the hollow cutter 1 and the tail of the cooling column 2 are welded and inlaid with hard alloy to increase rigidity and wear resistance. In addition, the tail of the cooling column 2 is provided with a connection groove to facilitate the connection of external equipment.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical grinding hollow cutting knife internal cooling tool, wherein: The rear end of the hollow cutting blade (1) is a thin-walled structure, and is characterized in that the cylindrical grinding hollow cutting blade internal cooling tooling comprises: a cooling column (2), The cooling column (2) is divided into an introduction section at the front end, a supporting section in the middle, and a cooling section at the rear end; The introduction section of the cooling column (2) passes through the interior of the hollow cutter (1), the abutting section of the cooling column (2) abuts against the interior of the hollow cutter (1), and the cooling section of the cooling column (2) is located at the thin-walled structure to be processed of the hollow cutter (1); The inlet section of the cooling column (2) is provided with a water inlet pipe (3), the interior of the abutting section of the cooling column (2) is provided with a water guide cavity (4), the water inlet pipe (3) is in communication with the water guide cavity (4), the outer wall of the cooling column (2) is provided with a plurality of drainage grooves (5) along the axial direction, one end of the drainage groove (5) is in communication with the water guide cavity (4), and the other end of the drainage groove (5) extends toward the rear end of the cooling column (2) and extends to the space outside the hollow cutter (1).

2. The cylindrical grinding hollow cutting blade internal cooling tooling as claimed in claim 1, characterized in that: The outer wall of the abutment section of the cooling column (2) is provided with a water guide groove (6) in the radial direction, the water guide cavity (4) is in communication with the water guide groove (6), and the water guide groove (6) is in communication with the drainage groove (5).

3. The cylindrical grinding hollow cutting blade internal cooling tooling as claimed in claim 2, characterized in that: A plurality of water guide pipes (7) are provided in the abutting section of the cooling column (2) and are connected to the drainage grooves (5) in a one-to-one correspondence.

4. The cylindrical grinding hollow cutting blade internal cooling tooling as claimed in claim 3, characterized in that: The drainage groove (5) is arranged around the outer wall of the cooling column (2).

5. The cylindrical grinding hollow cutting blade internal cooling tooling as claimed in claim 1, characterized in that: A cavity (8) is arranged inside the cooling column (2) along the axial direction, and steel balls (9) are arranged in the cavity (8).

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