A hot-fitting tool holder with a ring spray cooling structure

Abstract

The utility model discloses a hot-mounted tool handle with an annular spray cooling structure, comprising an annular spray tool handle and an annular spray tool cap, the annular spray tool cap is tightly connected with the annular spray tool handle, the annular spray tool cap and one end of the annular spray tool handle are covered to form an annular spray channel and a containing gap, the inner wall of the annular spray tool handle is provided with a small hole for the circulation of a cooling medium, the middle part of the annular spray tool handle is provided with an injection channel, the two ends of the small hole are respectively connected with the injection channel and the containing gap, the containing gap is connected with the annular spray channel, and the annular spray channel extends to one end surface of the tool handle; the utility model is provided with a small hole for conveying a cooling medium, the small hole is used to convey the cooling medium and store it in a high-pressure gap between the tool handle and the tool cap, when the tool handle is rotated at a high speed during processing, with the change of the rotation speed, the ejection direction of the coolant splashed out from the high-pressure gap can be controlled, and the high-pressure gap is provided to enable the coolant medium to be briefly extruded to withstand faster splashing.

Description

Technical Field

[0001] The utility model relates to the technical field related to heat shrinkable tool handles, in particular to a heat-mounted tool handle with a ring spray cooling structure. Background Art

[0002] At present, in the field of machine tool processing technology, based on the principle of thermal expansion and contraction, the tool holder and the tool can be connected by interference fit through thermal expansion and contraction; this type of tool holder is called a heat shrink tool holder. In some milling machines and drilling machines, if the processing part of the workpiece is overheated during high-speed processing, for example, waste chips will be generated during high-speed processing. If they are not cleaned up and stay at the processing part or cooled down in time, the waste chips will be heated and fused to the processing part or the tool, thus affecting the normal grinding speed of the tool and accelerating the wear rate of the tool.

[0003] An existing tool transfer structure, tool assembly, processing device and machine tool, patent number is 202121731485.3, the utility model discloses a tool transfer structure, tool assembly, processing device and machine tool, the tool transfer structure includes a tool handle transfer part for connecting to the tool handle and a tool clamping part connected to the tool, the transfer structure is provided with a plurality of axially through-going first internal cooling channels, the tool clamping part is provided with an axially extending tool clamping hole, the tool clamping hole is used to clamp the tool handle, and the inner diameter of the tool clamping hole is used to match the outer diameter of the tool handle.

[0004] The first inner cooling channel of the above-mentioned utility model is set to be able to transport and spray the cooling medium in a circular manner. However, since the angle at which the first inner cooling channel is set is fixed, the sputtering radius formed by the cooling medium in the process of circular spraying is fixed, that is, the circular spraying range is not variable, so that it is impossible to remove chips or cool more areas. Utility Model Content

[0005] The utility model aims to provide a heat-fitting tool handle with a ring spray cooling structure to overcome the shortcomings in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hot-mounted tool handle with a ring-spray cooling structure comprises a ring-spray tool handle and a ring-spray tool cap. The ring-spray tool cap is tightly connected to the ring-spray tool handle. The ring-spray tool cap covers one end of the ring-spray tool handle to form a ring-spray channel and a containing gap. The inner wall of the ring-spray tool handle is provided with small holes for the circulation of cooling medium. The middle part of the ring-spray tool handle is provided with an injection channel. The two ends of the small hole are respectively connected to the injection channel and the containing gap. The containing gap is connected to the ring-spray channel. The ring-spray channel extends to one end surface of the tool handle.

[0008] To further illustrate, the inner wall of the ring spray knife cap is fixedly provided with engineering plastic, and one end of the ring spray knife handle is sleeved with a sealing ring.

[0009] To further explain, an internal thread is arranged inside the ring spray knife cap, and an external thread corresponding to the internal thread is arranged outside one end of the ring spray knife handle, and the ring spray knife cap is threadedly connected to the ring spray knife handle.

[0010] To further explain, the injection channel is coaxially arranged with the ring spray knife handle, the ring spray knife handle is provided with an annular convex edge, and a side wall surface of the ring spray knife cap abuts against and closely adheres to the ring spray knife handle.

[0011] It is further explained that the annular jet channel is arranged parallel to the central axis of the annular jet cutter handle.

[0012] It is further explained that the annular jet channel is arranged obliquely relative to the central axis direction of the annular jet blade handle.

[0013] To further explain, the small hole is embedded in the ring spray knife handle, one end of the small hole extends to the inner wall of the ring spray knife handle, and the other end extends to one end surface of the ring spray knife handle.

[0014] To further explain, the small holes are arranged in a circular array inside the ring spray knife handle with the central axis of the ring spray knife handle as the center.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The utility model is provided with a small hole for conveying a cooling medium, and the small hole is used to convey the cooling medium and store it in a high-pressure gap between the tool handle and the tool cap. When processing, the tool handle rotates at a high speed. With the change of the rotation speed, the ejection direction of the coolant splashed out from the high-pressure gap can be controlled. The high-pressure gap is provided to enable the coolant medium to be briefly squeezed to withstand faster splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Notes on the attached drawings:

[0020] 1. Ring spray knife cap; 2. Ring spray knife handle; 3. Accommodation gap; 4. Ring spray channel; 5. Injection channel; 6. Small hole; 7. Internal thread; 8. External thread. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] The present invention is described in detail below in conjunction with the embodiments shown in the accompanying drawings:

[0025] like Figure 1-2 As shown, in this embodiment, a heat-mounted tool handle with an annular spray cooling structure is provided, including an annular spray tool handle 2 and an annular spray tool cap 1. The annular spray tool cap 1 is tightly connected with the annular spray tool handle 2. To further explain, an internal thread 7 is provided inside the annular spray tool cap 1, and an external thread 8 corresponding to the internal thread 7 is provided on the outer side of one end of the annular spray tool handle 2. The annular spray tool cap 1 is threadedly connected with the annular spray tool handle 2. The tight connection mentioned here means that after the thermal expansion and contraction tool handle has clamped the tool, the annular spray tool cap 1 is threadedly connected with the annular spray tool handle 2, and at the same time, engineering plastic is fixedly provided on the inner wall of the annular spray tool cap 1, which can prevent the annular spray tool cap 1 from loosening when rotating at high speed.

[0026] In other embodiments, a sealing ring is optionally provided on one end of the ring spray knife handle 2, which can further improve the sealing performance between the ring spray knife cap 1 and the ring spray knife handle 2 to avoid partial leakage of the medium and failure to achieve the high pressure effect.

[0027] The ring spray cap 1 covers one end of the ring spray handle 2 to form a ring spray channel 4 and a receiving gap 3. The inner wall of the ring spray handle 2 is provided with a small hole 6 for the circulation of cooling medium (cooling medium includes water and gas). The middle part of the ring spray handle 2 is provided with an injection channel 5. The two ends of the small hole 6 are respectively connected to the injection channel 5 and the receiving gap 3. The receiving gap 3 is connected to the ring spray channel 4, and the ring spray channel 4 extends to one end surface of the handle. Therefore, when ring spraying is needed, one end of the ring spray handle 2 needs to be connected to an air pump or a water pump, and water or gas can flow through the injection channel 5 through the small hole 6 into the receiving gap 3. After buffering and a short stay in the receiving gap 3, it is sprayed to the end of the tool or the workpiece to be processed by the ring spray channel 4.

[0028] In this embodiment, the injection channel 5 is arranged coaxially with the annular spray knife handle 2, that is, the injection channel 5 is arranged in the middle of the annular spray knife handle 2, and the annular spray knife handle 2 is provided with an annular convex edge. The side wall surface of the annular spray knife cap 1 is abutted and tightly attached to the annular spray knife handle 2. Specifically, the side wall surface of the annular spray knife cap 1 is abutted against the annular convex edge. In order to improve the sealing performance of the annular spray knife cap 1 and the annular spray knife handle 2, the annular convex edge is actually a countersunk edge cut and milled to one side at one end of the annular knife handle.

[0029] To further explain, the small hole 6 is embedded in the ring spray handle 2, one end of the small hole 6 extends to the inner wall of the ring spray handle 2, and the other end extends to the surface of one end of the ring spray handle 2, so that the injection channel 5 and the accommodating gap 3 can be conducted. The small holes 6 are arranged in a circular array with the central axis of the ring spray handle 2 as the center and inside the ring spray handle 2. The annular spray channel 4 is arranged parallel to the central axis of the ring spray handle 2, that is, the cooling medium temporarily contained in the accommodating gap 3 is ejected in parallel when it is ejected. Under high-speed rotation, the ejected medium varies with the speed of rotation, and the diameter of the annular spray and the range involved will vary, so the workpiece and the tool can be cooled and the waste chips can be cleaned.

[0030] In another embodiment, the annular spray channel 4 is arranged obliquely relative to the central axis of the annular spray handle 2, so that the cooling medium initially ejected can be ejected at an angle oblique to the original direction, and fine adjustments can be made according to the change in speed, so that a specific position can be continuously cooled and cleaned.

[0031] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered as within the scope of this specification. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat-insulated toolholder with a ring spray cooling structure, characterized in that: It includes a ring-spraying knife handle and a ring-spraying knife cap. The ring-spraying knife cap is tightly connected to the ring-spraying knife handle. The ring-spraying knife cap covers one end of the ring-spraying knife handle to form a ring-spraying channel and a containing gap. The inner wall of the ring-spraying knife handle is provided with a small hole for the circulation of cooling medium. The middle part of the ring-spraying knife handle is provided with an injection channel. The two ends of the small hole are respectively connected to the injection channel and the containing gap. The containing gap is connected to the ring-spraying channel. The ring-spraying channel extends to one end surface of the knife handle.

2. The heat-insulated tool holder with a ring spray cooling structure as claimed in claim 1, characterized in that: The inner wall of the ring spray cap is fixedly provided with engineering plastic.

3. The heat-insulated tool holder with a ring spray cooling structure as claimed in claim 2, characterized in that: An internal thread is arranged inside the ring spray knife cap, and an external thread corresponding to the internal thread is arranged outside one end of the ring spray knife handle, and the ring spray knife cap is threadedly connected with the ring spray knife handle.

4. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: The injection channel is coaxially arranged with the ring spray knife handle, the ring spray knife handle is provided with an annular convex edge, and a side wall surface of the ring spray knife cap abuts against and closely adheres to the ring spray knife handle.

5. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: The annular jet channel is arranged parallel to the central axis of the annular jet cutter handle.

6. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: The annular jet channel is arranged obliquely relative to the central axis direction of the annular jet cutter handle.

7. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: The small hole is embedded in the ring spray knife handle, one end of the small hole extends to the inner wall of the ring spray knife handle, and the other end extends to one end surface of the ring spray knife handle.

8. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: The small holes are arranged in a circular array inside the ring spray knife handle with the central axis of the ring spray knife handle as the center.

9. The heat-insulated tool holder with an annular spray cooling structure as claimed in claim 1, characterized in that: A sealing ring is sleeved on one end of the ring spray knife handle.

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