Machine tool spindle cooling ring

Abstract

The present invention discloses a heat sink for a machine tool spindle, and belongs to the technical field of heat dissipation for tool spindles. The present invention relates to a spindle head body, and a heat sink body is installed at the rotating output end of the spindle head body. The heat sink body is an integral part composed of an orifice plate section and a locking section. The heat sink body has an internal threaded hole that passes through the orifice plate section and the locking section. The orifice plate section is a circular plate, and at least one circle of heat dissipation holes is evenly arranged at the outer ring of the circular plate. The central axis of the internal threaded hole and the central axis of the orifice plate section are collinear, and the angle formed by the skew lines of the central axis of the heat dissipation hole and the central axis of the internal threaded hole is any angle between 0° and 45°. The present invention installs the heat sink body on the spindle, and through the characteristic of the spindle with rotation, the heat sink body can cause the flow of surrounding air, thereby improving the heat dissipation capacity of the heat sink body.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool spindle heat dissipation, and in particular relates to a machine tool spindle heat dissipation ring. Background Art

[0002] The existing machine tool spindles on the market are prone to overheating due to continuous high-speed operation. Although water is sprayed on the tool and the workpiece to cool it down during processing, there are still problems: the cooling effect is poor due to high temperature, the cooling water sprayed during processing splashes, and the water enters the bearing or the spindle to cause damage to the machine, and metal dust splashes into the bearing or the spindle to cause damage to the machine during processing. These problems can easily reduce the service life of the machine tool spindle and reduce the processing accuracy of the spindle. Summary of the invention

[0003] The purpose of the present invention is to provide a heat sink for a machine tool spindle. By installing a heat sink body on the spindle, the heat sink body can cause the flow of surrounding air due to the rotating characteristic of the spindle, thereby improving the heat dissipation capacity of the heat sink body.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a heat sink for a machine tool spindle, comprising a spindle head body, a heat sink body being installed at the rotating output end of the spindle head body, the heat sink body being an integral part consisting of an orifice plate section and a locking section, the heat sink body having an internal threaded hole passing through the orifice plate section and the locking section, the orifice plate section being a circular plate, at least one circle of heat sink holes being evenly arranged at the outer circle of the circular plate, and the central axis of the internal threaded hole and the central axis of the orifice plate section being collinear.

[0006] Furthermore, the heat dissipation holes are circular holes, and the heat dissipation holes are provided with two circles, namely an outer circle heat dissipation hole and an inner circle heat dissipation hole.

[0007] Furthermore, the diameter of the outer ring heat dissipation holes is larger than the diameter of the inner ring heat dissipation holes.

[0008] Furthermore, the angle formed by the skew lines of the central axis of the heat dissipation hole and the central axis of the internal threaded hole is any angle between 0° and 45°.

[0009] Furthermore, one end of the heat dissipation hole is a trumpet-shaped port, and the inner surface of the trumpet-shaped port protrudes toward its axis.

[0010] Furthermore, the rotation output end of the spindle head body is a rotating shaft with external threads, and the heat dissipation ring body is fitted on the external thread section of the rotating shaft.

[0011] Furthermore, a circle of screw holes is provided on the end of the locking section, and the locking section is fixed to the rotating shaft by screws.

[0012] The present invention has the following beneficial effects:

[0013] The present invention has a simple structure. A heat sink body is installed on the main shaft. The rotation characteristic of the main shaft is utilized to enable the heat sink body to cause the flow of surrounding air, thereby improving the heat dissipation capacity of the heat sink body. The heat sink body is first fixed by threads and then reinforced by bolts, thereby improving the stability of the heat sink installation. The heat sink is evenly arranged on the heat sink and the center axis of the threaded hole coincides with the center axis of the heat sink body, that is, when the heat sink rotates with the rotating shaft, the heat sink body will not rotate eccentrically.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the heat sink body;

[0018] Figure 3 It is a schematic diagram of the internal structure of the heat sink body;

[0019] Figure 4 A heat dissipation ring body with a trumpet-shaped heat dissipation hole at one end;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1-spindle head body, 2-heat dissipation ring body, 101-rotating shaft, 201-internal threaded hole, 202-heat dissipation hole, 203-locking section, 204-screw hole, 205-orifice plate section. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] See also Figure 1-3 As shown, the present invention is a heat sink ring for a machine tool spindle, a spindle head body 1, and a heat sink ring body 2 is installed at the rotation output end of the spindle head body 1.

[0025] The heat sink body 2 is an integral part composed of an orifice plate section 205 and a locking section 203, and is specifically in the shape of a stepped truncated cone. The heat sink body 2 has an internal threaded hole 201 that passes through the orifice plate section 205 and the locking section 203. The orifice plate section 205 is a circular plate, and at least one circle of heat dissipation holes 202 is evenly arranged on the outer circle of the circular plate. The central axis of the internal threaded hole 201 and the central axis of the orifice plate section 205 are collinear.

[0026] The rotating output end of the spindle head body 1 is a rotating shaft 101 with external threads, and the heat dissipation ring body 2 is matched with the external thread section of the rotating shaft 101, that is, the corresponding heat dissipation ring body 2 is provided with an internal thread hole 201;

[0027] A circle of screw holes 204 is formed on the locking section 203, that is, the heat dissipation ring body 2 is again installed on the rotating shaft 101 by bolts, wherein a blind hole corresponding to the screw hole 204 can be formed on the external thread section of the rotating shaft 101, and the bolt used for fixing can be inserted into the blind hole, so that the fixation is more stable. Preferably, there are three screw holes 204, and the angle between two adjacent screw holes 204 is 120°. If the heat dissipation ring needs to be replaced, the bolt can be screwed out, and then the heat dissipation ring body 2 can be screwed.

[0028] Preferably, the heat dissipation hole 202 is a circular hole, and the heat dissipation hole 202 is provided with two circles, namely an outer circle heat dissipation hole and an inner circle heat dissipation hole.

[0029] The aperture of the outer circle heat dissipation hole is larger than the aperture of the inner circle heat dissipation hole.

[0030] The angle between the central axis of the heat dissipation hole 202 and the central axis of the internal threaded hole 201 is any angle between 0° and 45°, that is, when the angle between the two central axis lines is 0°, the central axis of the heat dissipation hole 202 and the central axis of the threaded hole 201 are parallel.

[0031] Preferably, the angle formed by the skew lines of the central axis is greater than 0°, that is, when the heat dissipation hole 202 has a certain angle, when the heat dissipation ring body 2 is in a rotating state, a certain amount of air will enter the heat dissipation hole 202 in a negative pressure state, and correspondingly, when the inclined heat dissipation hole 202 rotates, it will push the air. At this time, the internal air entering the heat dissipation hole 202 will flow out along the inclined direction of the heat dissipation hole 202 and take away the heat of the heat dissipation ring 2.

[0032] Specific as Figure 4 One end of the heat dissipation hole 202 is a trumpet-shaped port, and the inner surface of the trumpet-shaped port protrudes toward its axis, that is, the air pressure at the outwardly protruding surface of the trumpet-shaped port is low, which is conducive to air intake, improves air circulation, and improves the heat dissipation efficiency of the spindle head body 1.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A machine tool spindle heat sink, comprising a spindle head body (1), characterized in that: A heat sink body (2) is installed at the rotation output end of the spindle head body (1), the heat sink body (2) is an integral part composed of an orifice plate section (205) and a locking section (203), the heat sink body (2) has an internal threaded hole (201) passing through the orifice plate section (205) and the locking section (203), the orifice plate section (205) is a circular plate, at least one circle of heat dissipation holes (202) is evenly arranged at the outer circle of the circular plate, and the central axis of the internal threaded hole (201) and the central axis of the orifice plate section (205) are collinear; The heat dissipation hole (202) is a circular hole, and the heat dissipation hole (202) is provided with two circles, namely an outer circle heat dissipation hole and an inner circle heat dissipation hole; the aperture of the outer circle heat dissipation hole is larger than the aperture of the inner circle heat dissipation hole; the angle formed by the central axis of the heat dissipation hole (202) and the central axis of the internal threaded hole (201) being any angle between 0° and 45°.

2. The machine tool spindle heat sink according to claim 1, characterized in that: One end of the heat dissipation hole (202) is a trumpet-shaped port, and the inner surface of the trumpet-shaped port protrudes toward its axis.

3. The machine tool spindle heat sink according to claim 1, characterized in that: The rotating output end of the spindle head body (1) is a rotating shaft (101) with external threads, and the heat dissipation ring body (2) is matched on the external thread section of the rotating shaft (101).

4. The machine tool spindle heat sink according to claim 3, characterized in that: A circle of screw holes is provided on the end of the locking section (203), and the locking section (203) is mounted on the rotating shaft (101) by means of screws.

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