CN216542251U

CN216542251U - Double-heat-dissipation main shaft

Info

Publication number: CN216542251U
Application number: CN202123300636.2U
Authority: CN
Inventors: 唐荣
Original assignee: Guangdong Keruisi Cnc Technology Co ltd
Current assignee: Guangdong Columbium Cnc Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-17
Anticipated expiration: 2031-12-24

Abstract

The application provides two heat dissipation main shafts belongs to main shaft technical field. The double-heat-dissipation main shaft comprises a main shaft inner cooling assembly and a main shaft outer cooling assembly. The interior cooling module of main shaft includes interior casing and water leakage board, interior casing upper and lower extreme opens to set up and its upper and lower port is equipped with bottom cover spare and lower plate respectively, it has the main shaft cover shell to run through between bottom cover spare and the lower plate jointly, and the inside cavity that constitutes between its two and main shaft cover shell and the interior casing forms heat conduction chamber, the fixed passenger cabin that is the cavity setting in bottom cover spare upper portion is installed, and main shaft cover shell upper end upwards extends to in the cavity of fixed passenger cabin inside, fixed passenger cabin top is connected with the installation passenger cabin of cavity setting and its two inner space communicates with each other. The double-layer cooling main shaft is designed aiming at the previous cooling mode, double-layer cooling is realized under the condition that the outer diameter of the main shaft is properly enlarged, and the probability that heat is transferred out of the main shaft per se is reduced in the long-time machining process of the main shaft.

Description

Double-heat-dissipation main shaft

Technical Field

The application relates to the field of main shafts, in particular to a double-heat-dissipation main shaft.

Background

The spindle is a core component of a numerical control machine tool and determines the machining performance of the machine tool, and the types of the spindle are divided into a mechanical spindle and an electric spindle. The main shaft has two main factors on the processing performance of the machine tool, namely thermal elongation and heat conduction.

The cooling structure of the main shaft is usually arranged for reducing the influence of the main shaft on the machining performance of the machine tool, and the cooling of the electric main shaft is divided into water cooling and oil cooling, which are mainly water cooling, but the cooling structure is usually a layer of cooling structure, and the layer of cooling structure is divided into two types, namely, inner cooling of the main shaft and outer cooling of the main shaft. Internally cooling, namely establishing a flow channel in the main shaft to cool the main shaft; the external cooling is between the outside of the main shaft and the main shaft box, a cooling pool is established after the assembly, and cooling liquid circulates for cooling. The two cooling modes have the defects that when the internal cooling type cooling mode is used for processing for a long time and heat is generated excessively, the heat cannot be completely taken away after the cooling efficiency is exceeded because the pipe diameter of the cooling flow channel is fixed, so that the heat is dissipated to the outside of the main shaft; the external cooling type cooling is to intercept the heat generated by the main shaft outside the main shaft, and the heat can not be completely taken out of the main shaft like internal cooling in long-time processing, so that the purpose of not influencing a machine tool is achieved.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the application provides two heat dissipation main shafts, aims at improving among the relevant art electric main shaft cooling and adopts the one deck cooling, and the cooling effect is not good problem.

The embodiment of the application provides a double-heat-dissipation main shaft which comprises a main shaft inner cooling assembly and a main shaft outer cooling assembly.

The spindle inner cooling assembly comprises an inner shell and a water leakage plate, wherein the upper end and the lower end of the inner shell are arranged in an open mode, a bottom cover part and a lower bottom plate part are respectively arranged at the upper end and the lower end of the inner shell, a spindle casing is connected between the bottom cover part and the lower bottom plate part in a penetrating mode, the spindle casing and an inner cavity formed by the spindle casing and the inner shell form a heat conduction cavity, a fixed cabin with a hollow inner part is arranged at the upper part of the bottom cover part, the upper end of the spindle casing extends upwards into the cavity in the fixed cabin, an installation cabin with a hollow inner part is connected to the top of the fixed cabin, the inner spaces of the installation cabin and the inner cavity are communicated with each other, the water leakage plate is connected to the upper end of the fixed cabin, the upper end of the water leakage plate is also provided with an integral installation cabin with a hollow spindle, and the top wall of the integral installation cabin of the spindle is communicated with an inner cooling water inlet/outlet hole communicated with the inner space of the inner cavity, the spindle outer cooling assembly comprises an outer shell which is opened from top to bottom, the open position of the upper end and the lower end of the outer shell are respectively fixed with the outer wall of the upper end of the spindle integrally-installed cabin and the outer wall of the lower end of the inner shell, the outer shell and the periphery of the spindle inner cooling assembly form a circular circulating water cavity, and the outer shell upper wall is communicated with an outer cooling water inlet/outlet hole in an equidistant mode.

In a particular embodiment, the weep plate comprises a circular plate and two weep holes.

In a specific embodiment, the peripheries of the upper surface and the lower surface of the circular plate are respectively connected to the top end of the installation cabin and the bottom end of the main shaft integral installation cabin, two liquid leakage holes are symmetrically arranged on the circular plate in a point-symmetrical penetrating manner by taking the circle center of the circular plate as the center, and the installation cabin and the main shaft integral installation cabin are communicated with each other through the two liquid leakage holes.

In a particular embodiment, the outer diameter of the circular plate is the same as the outer diameter of both the stationary and spindle integral mounting pods and the mounting pods.

In a particular embodiment, the inner diameter of the fixing capsule is smaller than the inner diameter of the mounting capsule, and the upper end of the inner wall of the fixing capsule extends to the lower end of the inner wall of the mounting capsule.

In a specific embodiment, the bottom cover member comprises a circular hollow core plate i and a circular hollow core plate ii.

In a specific implementation scheme, the hollow plate I is connected to the upper portion of the hollow plate II and the hollow plate I and the hollow plate II are coaxially arranged in the same diameter, a through hole matched with the spindle sleeve shell penetrates through the hollow plate I, and the separated sides of the hollow plate I and the hollow plate II are respectively connected with the lower end of the fixed cabin and the upper end of the inner shell.

In a specific embodiment, the lower base plate comprises a hollow plate III, a hollow plate IV and a hollow plate V, the diameters of which are sequentially reduced.

In a specific embodiment, the hollow plate iii is inserted into the inner housing from the open lower end of the outer housing and connected to the inner wall of the inner housing, the hollow plate iv is connected between the hollow plate iii and the hollow plate v, and the lower end of the spindle housing penetrates through the hollow plates iii, iv and v and continues to extend outward.

In a specific embodiment, the lower end peripheral side of the outer shell is annularly provided with T-shaped holes with respect to the circle center.

Has the advantages that: the double-layer cooling main shaft is designed aiming at the previous cooling mode, double-layer cooling is realized under the condition that the outer diameter of the main shaft is properly enlarged, and the probability that heat is transferred out of the main shaft per se is reduced in the long-time machining process of the main shaft.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic cross-sectional structure diagram of a dual heat dissipation spindle according to an embodiment of the present disclosure;

fig. 2 is a schematic view of a three-dimensional half-section structure of a double-heat-dissipation main shaft according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the external structure of FIG. 1 according to an embodiment of the present disclosure;

fig. 4 is a schematic view of a partial cross-sectional structure at a-a in fig. 3 according to an embodiment of the present disclosure.

In the figure: 100-a spindle inner cooling assembly; 110-an inner housing; 111-a spindle housing; 120-a thermally conductive cavity; 130-a bottom cover member; 131-hollow slab I; 132-hollow slab ii; 140-lower base plate; 141-hollow slab iii; 142-hollow core IV; 143-hollow panel v; 150-a water leakage plate; 151-circular plate; 152-weep holes; 160-inner cooling water inlet/outlet hole; 170-fixed cockpit; 180-installing the cabin; 190-the main shaft is integrally provided with a cabin; 200-a spindle external cooling assembly; 210-an outer shell; 220-circulating water cavity; 230-external cooling inlet/outlet hole.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1, the present application provides a dual heat-dissipating spindle including an inner spindle cooling assembly 100 and an outer spindle cooling assembly 200.

The spindle in the application is composed of a spindle inner cooling assembly 100 and a spindle outer cooling assembly 200, a double-layer cooling spindle is formed, double-layer cooling is achieved under the condition that the outer diameter of the spindle is properly enlarged, and the probability that heat is transferred out of the spindle is reduced in the long-time machining process of the spindle.

Referring to fig. 1, 2, 3 and 4, the spindle interior cooling assembly 100 includes an inner housing 110 and a water leakage plate 150, the inner housing 110 is opened at its upper and lower ends and has a bottom cover 130 and a lower bottom plate 140 at its upper and lower ports, the spindle housing 111 is connected between the bottom cover 130 and the lower bottom plate 140, and the two inner cavities formed between the bottom cover 130 and the lower bottom plate 140, the spindle housing 111 and the inner housing 110 form a heat conduction cavity 120, wherein the heat conduction cavity 120 is used for absorbing heat generated by the rotation of the spindle in the spindle housing 111 and diffusing the heat outward to reduce the continuous heat generation of the spindle. The upper part of the bottom cover component 130 is provided with a fixed cabin 170 which is hollow, the upper end of the main shaft casing 111 extends upwards to the cavity inside the fixed cabin 170, the top of the fixed cabin 170 is connected with a hollow installation cabin 180, the internal spaces of the installation cabin 180 and the fixed cabin 170 are communicated, the water leakage plate 150 is connected to the upper end of the fixed cabin 170, the upper end of the water leakage plate 150 is also provided with a main shaft integral installation cabin 190 which is hollow, and the top wall of the main shaft integral installation cabin 190 is communicated with an internal cooling water inlet/outlet hole 160 which is communicated with the internal space of the main shaft integral installation cabin 190.

In this embodiment, the leakage plate 150 includes a circular plate 151 and two leakage holes 152, the peripheries of the upper and lower surfaces of the circular plate 151 are connected to the top end of the mounting capsule 180 and the bottom end of the spindle integrally mounting capsule 190, respectively, and specifically, the circular plate 151 is integrally provided with the mounting capsule 180 and the spindle integrally mounting capsule 190. The two liquid leakage holes 152 are symmetrically arranged on the circular plate 151 in a penetrating manner by taking the circle center of the circular plate 151 as a center point, and the installation cabin 180 and the spindle integral installation cabin 190 are communicated with each other through the two liquid leakage holes 152.

In the present embodiment, the outer diameter of the circular plate 151 is the same as the outer diameters of the fixing capsule 170 and the spindle integrated mounting capsule 190 and the mounting capsule 180, the inner diameter of the fixing capsule 170 is smaller than the inner diameter of the mounting capsule 180, and the upper end of the inner wall of the fixing capsule 170 extends to the lower end of the inner wall of the mounting capsule 180.

In this embodiment, the bottom cover member 130 includes a circular hollow plate i 131 and a circular hollow plate ii 132, the hollow plate i 131 is connected to the upper portion of the hollow plate ii 132, and the two are coaxially arranged in the same diameter, a through hole matched with the spindle casing 111 is formed in the hollow plate i 131 in a penetrating manner, the separated sides of the hollow plate i 131 and the hollow plate ii 132 are respectively connected with the lower end of the fixed cabin 170 and the upper end of the inner shell 110, and specifically, the hollow plate i 131 and the hollow plate ii 132 are respectively fixed with the fixed cabin 170 and the inner shell 110 in a scarf joint manner.

In this embodiment, the lower plate 140 includes a hollow plate iii 141, a hollow plate iv 142 and a hollow plate v 143, which are sequentially reduced in diameter, and specifically, the hollow plate iii 141, the hollow plate iv 142 and the hollow plate v 143 are integrally cast and penetrate each other. The hollow plate iii 141 is inserted into the inner housing 110 from the open lower end of the outer housing 210 and connected to the inner wall of the inner housing 110, and specifically, the hollow plate iii 141 and the inner housing 110 are integrally fixed. The hollow plate iv 142 is connected between the hollow plates iii 141 and v 143, and the lower end of the main shaft housing 111 penetrates the hollow plates iii 141 and iv 142 and the hollow plate v 143 and continues outward.

Referring to fig. 1, 2 and 3, the spindle cooling assembly 200 includes an outer casing 210 that is open at the top and bottom, wherein a T-shaped hole is annularly disposed on the circumference of the lower end of the outer casing 210 about the center of the outer casing. The upper and lower open ends of the outer housing 210 are fixed to the upper outer wall of the main shaft integrally mounted cabin 190 and the lower outer wall of the inner housing 110, and specifically, the outer housing 210 and the inner housing 110 are integrally formed and fixed to the main shaft integrally mounted cabin 190 by welding. And a circular circulating water cavity 220 is formed between the outer shell 210 and the outer periphery of the spindle inner cooling assembly 100, and outer cooling water inlet/outlet holes 230 are communicated with the upper wall of the outer shell 210 at equal intervals.

The working principle of the double-radiating main shaft is as follows:

the upper part of the main shaft integral installation cabin 190 is provided with an inner cooling water inlet/outlet hole 160, heat dissipation liquid can be injected into the inner cooling water inlet/outlet hole, the heat dissipation liquid enters the installation cabin 180 through the liquid leakage hole 152 and then enters the fixed cabin 170, the main shaft is installed in the main shaft casing 111, when the main shaft rotates to work, heat is transferred to the inner wall of the main shaft casing 111 and then is diffused into the heat conduction cavity 120, at this time, the circulating water cavity 220 in the main shaft outer cooling component 200 is matched with the outer cooling water inlet/outlet hole 230 to conduct heat and dissipate heat of the heat, and therefore heat is led out and circulated, and heat of the installation position at the bottom of the main shaft is dissipated from the fixed cabin 170. When the work is completed, heat can be conducted out and replaced from the inner cooling water inlet/outlet hole 160.

It should be noted that the specific model specifications of the hollow slab i 131, the hollow slab ii 132, the hollow slab iii 141, the hollow slab iv 142, and the hollow slab v 143 need to be determined by model selection according to the actual specification of the apparatus, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A double heat dissipation main shaft is characterized by comprising

The spindle inner cooling assembly (100) comprises an inner shell (110) and a water leakage plate (150), wherein the upper end and the lower end of the inner shell (110) are arranged in an open mode, a bottom cover piece (130) and a lower bottom plate piece (140) are respectively arranged at the upper end and the lower end of the inner shell (110), a spindle casing (111) is connected between the bottom cover piece (130) and the lower bottom plate piece (140) in a penetrating mode, a heat conduction cavity (120) is formed by the two inner cavities, the spindle casing (111) and the inner cavity formed by the spindle casing (111) and the inner shell (110), a fixed cabin (170) which is arranged in a hollow mode is installed at the upper portion of the bottom cover piece (130), the upper end of the spindle casing (111) extends upwards to the cavity inside the fixed cabin (170), the top of the fixed cabin (170) is connected with a hollow installation cabin (180) and the inner spaces of the two are communicated with each other, and the water leakage plate (150) is connected to the upper end of the fixed cabin (170), the upper end of the water leakage plate (150) is also provided with a main shaft integral installation cabin (190) with a hollow inner part, and the top wall of the main shaft integral installation cabin (190) is communicated with an inner cooling water inlet/outlet hole (160) communicated with the inner space of the main shaft integral installation cabin;

the outer cold subassembly of main shaft (200), the outer cold subassembly of main shaft (200) is including shell body (210) of opening from top to bottom, the open department in end respectively on shell body (210) with the upper end outer wall of main shaft integral erection cabin (190) with the lower extreme outer wall of interior casing (110) is fixed mutually, just shell body (210) with constitute annular form circulation water cavity (220) between the cold subassembly (100) periphery in the main shaft, shell body (210) upper wall equidistance intercommunication has outer cold to advance/apopore (230).

2. Double-heat-dissipation spindle according to claim 1, wherein the weep plate (150) comprises a circular plate (151) and two weep holes (152).

3. The dual heat dissipation main shaft according to claim 2, wherein the peripheries of the upper and lower surfaces of the circular plate (151) are respectively connected to the top end of the installation cabin (180) and the bottom end of the main shaft integral installation cabin (190), two of the leakage holes (152) are symmetrically opened through the circular plate (151) with the center of the circle of the circular plate (151) as the center point, and the installation cabin (180) and the main shaft integral installation cabin (190) are communicated with each other through the two leakage holes (152).

4. Double-heat-dissipating main shaft according to claim 3, characterized in that the outer diameter of the circular plate (151) is the same as the outer diameters of both the fixing capsule (170) and the main shaft integral mounting capsule (190) and the mounting capsule (180).

5. The dual heat dissipation spindle of claim 1, wherein an inner diameter of the fixing capsule (170) is smaller than an inner diameter of the mounting capsule (180), and an inner wall upper end of the fixing capsule (170) extends to an inner wall lower end of the mounting capsule (180).

6. Double-radiating spindle according to claim 1, characterised in that the bottom cover (130) comprises a circular hollow slab i (131) and a hollow slab ii (132).

7. The main shaft with double heat dissipation functions as claimed in claim 6, wherein the hollow plate I (131) is connected to the upper portion of the hollow plate II (132) and the hollow plate I and the hollow plate II are coaxially arranged in the same diameter, a through hole matched with the main shaft casing (111) is formed in the hollow plate I (131) in a penetrating mode, and the separated sides of the hollow plate I (131) and the hollow plate II (132) are respectively connected with the lower end of the fixed cabin (170) and the upper end of the inner shell (110).

8. The double-heat-dissipation main shaft as recited in claim 1, wherein the lower base plate (140) comprises a hollow plate iii (141), a hollow plate iv (142) and a hollow plate v (143) which are sequentially reduced in diameter.

9. The dual spindle according to claim 8, wherein the hollow plate iii (141) is inserted into the inner housing (110) from the lower open end of the outer housing (210) and connected to the inner wall of the inner housing (110), the hollow plate iv (142) is connected between the hollow plate iii (141) and the hollow plate v (143), and the lower end of the spindle housing (111) penetrates through the hollow plate iii (141) and the hollow plate iv (142) and the hollow plate v (143) and continues outward.

10. The dual heat dissipation spindle of claim 1, wherein the outer housing (210) has T-shaped holes annularly arranged around the center of the outer housing.