WO2021147640A1 - 采用抱夹冷却的电主轴 - Google Patents

采用抱夹冷却的电主轴 Download PDF

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Publication number
WO2021147640A1
WO2021147640A1 PCT/CN2020/141738 CN2020141738W WO2021147640A1 WO 2021147640 A1 WO2021147640 A1 WO 2021147640A1 CN 2020141738 W CN2020141738 W CN 2020141738W WO 2021147640 A1 WO2021147640 A1 WO 2021147640A1
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WIPO (PCT)
Prior art keywords
clamp
electric spindle
holding
cooling
holding clamp
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PCT/CN2020/141738
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English (en)
French (fr)
Inventor
伍曦
黄孙可
张伟江
周泽华
张翰乾
程振涛
汤秀清
Original Assignee
广州市昊志机电股份有限公司
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Publication of WO2021147640A1 publication Critical patent/WO2021147640A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles

Definitions

  • the present application relates to the field of electric spindles, for example, to an electric spindle that adopts holding clamp cooling.
  • Electric spindle is one of the most important core components of CNC engraving and milling machine. It is the core component of CNC engraving and milling machine engraving, milling and grinding. It is mainly used in electronic parts manufacturing, small precision mold manufacturing, hardware products, furniture manufacturing, etc. industry.
  • the electric spindle mainly adopts water cooling in the related technology, and needs to be equipped with peripheral equipment such as chillers, which has the disadvantages of large area and high cost.
  • peripheral equipment such as chillers
  • the Chinese invention application with publication number CN110153446A discloses an electric spindle with a cooling structure. By setting a unidirectional water-cooling channel in the holding clamp, the cooling water is removed from After the water inlet is introduced, it flows out along the water cooling channel to the water outlet, and sprays directly on the processing surface of the workpiece.
  • the cooling effect of the water passing method is limited. Due to the limitation of the structure of the holding clamp, the volume of the water cooling channel is always small, narrow, and narrow compared to the volume of the entire holding clamp.
  • the slender water-cooling channel has a small heat dissipation surface area, and the heat can only be taken away by cold water, and it is difficult to pass through the wall thickness of the clamp and be naturally lost. For the electric spindle that needs to rotate frequently and continuously output large heat in working conditions , The heat dissipation efficiency is limited.
  • water cooling is also prone to problems such as leakage and discharge of sewage, which affects the working environment of the production site, and is not suitable for high-cleanness production workshops.
  • the water cooling scheme in the related technology can no longer meet the development needs of the use of electric spindles.
  • the present application provides an electric spindle that adopts holding clamp cooling.
  • An air cooling channel is opened inside the holding clip, and the two ends of the air cooling channel are respectively connected with an air inlet and an air outlet, and a plurality of heat dissipation ribs are provided on the holding clip;
  • the heat is taken away by the cooling gas continuously flowing into the air-cooling channel, and on the other hand, the heat dissipation ribs enhance the heat dissipation effect of the clamp.
  • An electric spindle adopting holding clamp cooling comprising a holding clamp and an electric spindle, the holding clamp is a hollow structure, the body part of the electric spindle is fixedly inserted into the holding clamp; the surface of the holding clamp is provided with Air inlet and air outlet, the inside of the holding clip is provided with an air cooling channel, the air cooling channel surrounds the inside of the holding clip for a week, the two ends of the air cooling channel are connected to the air inlet and the air outlet respectively.
  • the air outlet is connected; the outer surface of the holding clip is evenly provided with a plurality of heat dissipation ribs.
  • a plurality of heat dissipation ribs are respectively provided on the two side surfaces and the bottom surface of the holding clamp, and the gap grooves formed between the heat dissipation ribs on the side surfaces penetrate through the front and rear surfaces of the holding clamp. End face.
  • the air-cooled passage includes a plurality of horizontal passages and vertical passages that are connected to each other; the horizontal passage and the vertical passage are arranged in pairs at intervals and perpendicular to each other.
  • a threaded plug is provided at the end of each horizontal channel and each vertical channel.
  • the electric spindle adopting clamp cooling further includes an air inlet joint and an air outlet joint; the air inlet joint is fixedly arranged on the air inlet, and the air outlet joint is fixedly arranged on the air outlet .
  • two sides of the holding clamp are provided with screw holes; the electric spindle and the holding clamp are fixedly connected by the screw holes and mounting screws.
  • the number of the screw holes is two, and the screw holes penetrate through two sides of the holding clip.
  • a through hole is opened on one end of the holding clip; the holding clip is fixedly connected to the machine tool mounting plate through the through hole and mounting screws.
  • the number of the through holes is four.
  • one end surface of the holding clip is provided with a gasket groove penetrating the hollow inner hole, and a gasket is provided in the gasket groove.
  • Figure 1 is the assembly drawing of the holding clamp and the electric spindle
  • Figure 2 is a front view of the electric spindle
  • Figure 3 is a perspective view of the holding clip
  • Figure 4 is a front view of the holding clip
  • Figure 5 is a left side view of the holding clip
  • Figure 6 is a top view of the holding clip
  • Figure 7 is a schematic diagram of the internal structure of the holding clamp (the cooling ribs and part of the mounting holes are hidden);
  • Figure 8 is a front view of Figure 7;
  • Fig. 9 is a left side view of Fig. 7.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of this application, “plurality” means two or more.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a connection between two elements or an interaction relationship between two elements.
  • connection should be understood according to the situation.
  • the present application discloses an electric spindle that adopts holding clamp cooling, including a holding clamp 1 and an electric spindle 2, wherein the holding clamp 1 is a hollow structure with a hollow inner hole 13, and the body of the electric spindle 2 Part of it is fixedly inserted in the holding clip 1.
  • the surface of the holding clip 1 is provided with an air inlet 20 and an air outlet 30, and the inside of the holding clip 1 is provided with an air cooling channel 10 surrounded by the air cooling channel 10
  • the holding clip 1 has an inner circle, and the two ends of the air cooling channel 10 are respectively connected with the air inlet 20 and the air outlet 30 for passing in cooling gas; the outer surface of the holding clip 1 is also evenly provided with a plurality of heat dissipation ribs 40.
  • the cooling gas circles the inside of the holding clip 1 to take away the heat inside the holding clip 1;
  • the air cooling channel 10 and the holding clip are also reduced. 1
  • the thickness of the wall between the outer surfaces is more conducive to the heat dissipation of the cooling gas in the circulation process.
  • a plurality of heat dissipation ribs 40 are respectively provided on the left, right and bottom surfaces of the holding clip 1, and a gap groove is formed between every two heat dissipation ribs 40 on the side surface.
  • the gap groove penetrates the front and rear surfaces of the holding clamp 1. Since the top surface of the holding clamp 1 needs to be matched with the electric spindle 2 without the heat dissipation ribs 40, the heat dissipation ribs 40 are provided on both sides and the bottom surface to the greatest extent.
  • the gap grooves between the heat dissipation ribs 40 on the sides penetrate through On the front and rear surfaces, it is conducive to air convection and maximizes the heat dissipation effect.
  • the number of radiating ribs 40 may be 33, which are evenly arranged on the side and bottom surface of the holding clip 1. At the same time, the length of each heat dissipation rib 40 is inconsistent, and each surface can be distributed with a long heat dissipation rib in the middle and short heat dissipation ribs on both sides, which can simultaneously take into account the heat dissipation effect and the structural force stability of the holding clip 1.
  • the air-cooling channel 10 inside the holding clip 1 includes a plurality of horizontal channels 11 and vertical channels 12 communicating with each other.
  • the horizontal channel 11 and the vertical channel 12 are arranged at intervals, that is, the flow direction of the cooling gas is: horizontal channel 11-vertical channel 12-horizontal channel 11-vertical channel 12-horizontal channel 11...; and the adjacent channels are perpendicular to each other.
  • This structure can make the air cooling channel 10 better cover the inside of the holding clamp 1, and the cooling air can fully travel inside the holding clamp 1, so that every position and corner inside the holding clamp 1 can be better.
  • the uniform heat dissipation can be better.
  • each horizontal channel 11 and each vertical channel 12 is provided with a threaded hole, and a threaded plug 50 is fixedly installed through the threaded hole to allow the cooling gas to flow along a fixed route , To prevent the occurrence of air leakage.
  • the present application further includes an air inlet connector 60 and an air outlet connector 70.
  • the air inlet joint 60 is fixedly arranged on the air inlet 20, and the air outlet joint 70 is fixedly arranged on the air outlet 30.
  • the two joints are connected with external cooling pipes for passing in and discharging cooling gas, respectively.
  • screw holes 80 are opened on the left and right sides of the holding clip 1.
  • the number of screw holes 80 is two, which penetrate through the left and right sides of the holding clip 1 to achieve a stable connection effect.
  • one end surface of the holding clip 1 is provided with a through hole 90, and the other end surface A is a mating surface for mounting.
  • the number of through holes 90 is 4 to achieve a stable connection effect.
  • a gasket groove penetrating the hollow inner hole is opened on one end surface of the holding clip 1, and a gasket 100 is provided in the gasket groove.
  • the function of the gasket 100 is to limit Deformation of the holding clamp 1, when installing the electro-spindle 2, install it through the mounting screws and screw holes 80, so that the central inner hole 13 of the holding clamp 1 is slightly deformed, thereby holding the electro-spindle 2 tightly; because the electro-spindle 2 is a precision part
  • the amount of deformation of the inner hole 13 is adjusted by adding a spacer groove and a spacer 100.
  • this application can also be cooled by cold water.
  • cooling gas for air cooling this application can also be cooled by cold water.
  • it has good sealing performance and can be applied to different cooling at the same time. Way.
  • the present application has the following advantages: on the one hand, by providing an air-cooling channel inside the holding clamp, and inputting cooling gas into the air-cooling channel, the cooling gas surrounds the inside of the holding clamp and is discharged to take away the heat inside the holding clamp; On the one hand, by arranging multiple radiating ribs on the surface of the holding clamp, the heat dissipation area of the holding clamp surface is increased, so that the heat inside the holding clamp is easily dissipated naturally, and the air cooling channel and the outer surface of the holding clamp are also reduced.
  • the wall thickness between is more conducive to the heat dissipation of the cooling gas in the circulation process.
  • This application greatly enhances the cooling effect of the electric spindle through the synergistic effect of the air cooling channel and the heat dissipation ribs; at the same time, the air cooling method is adopted, which is more convenient to realize the cooling cycle and has a higher degree of cleanliness than water cooling. During the cooling process, there will be no leakage, discharge and cleanliness of sewage, which will have less environmental impact on the production site and can adapt to high-cleanliness production workshops. 2Through the reasonable structure design, the holding clamp and the electric spindle are easy to install and separate, and achieve the purpose of convenient maintenance and convenient replacement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

一种采用抱夹（1）冷却的电主轴（2），包括抱夹和电主轴，抱夹为中空结构，电主轴的机体部分固定插接于抱夹内；抱夹的表面设置有进气口（20）和出气口（30），抱夹的内部设置有气冷通道（10），气冷通道环绕抱夹的内部一周，气冷通道的两端分别与进气口、出气口连通；抱夹的外表面上还均匀开设有多个的散热筋（40）。

Description

采用抱夹冷却的电主轴
本公开要求在2020年01月21日提交中国专利局、申请号为202010070458.X的中国专利申请的优先权，以上申请的全部内容通过引用结合在本公开中。
技术领域
本申请涉及电主轴领域，例如涉及一种采用抱夹冷却的电主轴。
背景技术
电主轴是数控雕铣机的最主要的核心部件之一，是数控雕铣机雕刻、铣削、磨削的核心部件，主要应用在电子零配件制造、小型精密模具制造、五金制品、家具制造等行业。
随着行业发展对主轴重量和冷却方式的要求逐渐提高，小型电主轴的加工应用越来越广泛。电主轴主要采用相关技术中的通水冷却，需要配备冷水机等周边设备，具有占地面积大、成本费用高等缺点。相关技术中也出现了部分摒弃冷水机设备的水冷方案，如公开号为CN110153446A的中国发明申请公开了一种具有冷却结构的电主轴，通过在抱夹内设置单向的水冷通道，冷却水从进水口导入后沿水冷通道流出至出水口，直接喷洒在加工工件的加工面上。该技术方案虽然可以减少冷水机的配备，但采用通水方式的冷却效果是有限的，由于抱夹自身结构的限制，水冷通道的容积相对于整个抱夹的体积始终是较小的，狭窄、细长的水冷通道的散热表面积较小，热量仅能通过冷水带走，难以穿过抱夹的壁厚而自然散失，对于在工况中需要频繁转动、持续输出大发热量的电主轴来说，散热效率有限。另外，通水冷却也容易产生污水的滴漏和排放等问题，影响生产现场的工作环境，不适用于高清洁度的生产车间。
相关技术中的通水冷却方案已经不能满足电主轴使用的发展需要。
发明内容
本申请提供一种采用抱夹冷却的电主轴，抱夹内部开设有气冷通道，气冷通道的两端分别接通进气口和出气口，同时抱夹上开设有多个散热筋；一方面由持续通入气冷通道内的冷却气体带走热量，另一方面由散热筋增强抱夹的散热效果。
本申请采用以下的技术方案来实现；
一种采用抱夹冷却的电主轴，包括抱夹和电主轴，所述抱夹为中空结构，所述电主轴的机体部分固定插接于所述抱夹内；所述抱夹的表面设置有进气口和出气口，所述抱夹的内部设置有气冷通道，所述气冷通道环绕所述抱夹的内部一周，所述气冷通道的两端分别与所述进气口、所述出气口连通；所述抱夹的外表面上还均匀开设有多个的散热筋。
在一实施例中，所述抱夹的两个侧面和底面上分别开设有多个的散热筋，所述侧面上的散热筋之间形成的间隙槽贯通于所述抱夹的前端面和后端面。
在一实施例中，所述气冷通道包括多个相互连通的水平通道和垂直通道；所述水平通道和所述垂直通道两两间隔设置，并且相互垂直。
在一实施例中，每条所述水平通道和每条所述垂直通道的末端均设置有螺纹堵头。
在一实施例中，所述采用抱夹冷却的电主轴还包括进气接头和出气接头；所述进气接头固定设置在所述进气口上，所述出气接头固定设置在所述出气口上。
在一实施例中，所述抱夹的两侧面上开设有螺钉孔；所述电主轴和所述抱夹通过所述螺钉孔和安装螺钉固定连接。
在一实施例中，所述螺钉孔的数量为2个，所述螺钉孔贯通于所述抱夹的两个侧面。
在一实施例中，所述抱夹的一端面上开设有通孔；所述抱夹通过通孔和安装螺钉与机床安装板固定连接。
在一实施例中，所述通孔的数量为4个。
在一实施例中，所述抱夹的一端面上开设有与中空内孔贯通的垫片槽，所述垫片槽内设置有垫片。
附图说明
图1为抱夹和电主轴的装配图；
图2为电主轴的正视图；
图3为抱夹的立体图；
图4为抱夹的正视图；
图5为抱夹的左视图；
图6为抱夹的俯视图；
图7为抱夹的内部结构示意图(隐藏了散热筋和部分安装孔)；
图8为图7的正视图；
图9为图7的左视图。
图中：1、抱夹；2、电主轴；10、气冷通道；11、水平通道；12、垂直通道；13、中空内孔；20、进气口；30、出气口；40、散热筋；50、螺纹堵头；60、进气接头；70、出气接头；80、螺钉孔；90、通孔；100、垫片；A、安装配合面。
具体实施方式
下面，结合附图以及具体实施方式，对本申请做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。
在本申请的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
参阅图1-图3，本申请公开了一种采用抱夹冷却的电主轴，包括抱夹1和电 主轴2，其中抱夹1为中空结构，其具有中空内孔13，电主轴2的机体部分固定插接在抱夹1内；参阅图3、图7，抱夹1的表面设置有进气口20和出气口30，抱夹1的内部设置有气冷通道10，气冷通道10环绕抱夹1内部一周，气冷通道10的两端分别与进气口20、出气口30连通，用于通入冷却气体；抱夹1的外表面上还均匀开设有多个的散热筋40。
一方面，通过在抱夹1内部设置气冷通道10，并在气冷通道10内输入冷却气体，冷却气体在抱夹1内部环绕一周，以带走抱夹1内部的热量；另一方面，通过在抱夹1的表面上设置多个的散热筋40，增大了抱夹1表面的散热面积，使抱夹1内部的热量易于自然散失，同时也减小了气冷通道10和抱夹1外表面之间的壁厚，更有利于冷却气体在流通过程中的散热。
在一实施例中，参阅图3-图4，抱夹1的左、右侧面和底面上分别开设有多个的散热筋40，侧面上的每两条散热筋40之间会形成间隙槽，间隙槽贯通于抱夹1的前端面和后端面。由于抱夹1的顶面需要和电主轴2配合，不设散热筋40，因此最大限度地在两个侧面及底面上均设置散热筋40，另外，侧面上的散热筋40间的间隙槽贯通于前、后端面，有利于空气对流，最大程度地实现散热效果。
散热筋40的数量可选有33条，均匀地布置在抱夹1的侧面和底面。同时，每条散热筋40的长度不一致，每个面可以呈中间散热筋长、两侧散热筋短的分布，能同时兼顾到散热效果和抱夹1的结构受力稳定性。
在一实施例中，参阅图7，抱夹1内部的气冷通道10包括多个相互连通的水平通道11和垂直通道12。水平通道11和垂直通道12两两间隔设置，即冷却气体的流向为：水平通道11-垂直通道12-水平通道11-垂直通道12-水平通道11……；并且相邻通道之间两两垂直。这种结构可以使气冷通道10整体能较好 地布满在抱夹1内部，冷却气体可以充分地在抱夹1内部游走，能够使抱夹1内部的每个位置角落都得到较好的均匀散热。
在一实施例中，参阅图8-图9，每条水平通道11和每条垂直通道12的末端均设置有螺纹孔，通过螺纹孔固定安装有螺纹堵头50，使冷却气体沿固定路线流动，防止漏气情况的出现。
在一实施例中，本申请还包括进气接头60和出气接头70。进气接头60固定设置在进气口20上，出气接头70固定设置在出气口30上，两接头与外部的冷却管道连接，分别用于通入和排出冷却气体。
在一实施例中，参阅图5，抱夹1的左、右侧面上开设有螺钉孔80。在装配电主轴2和抱夹1时，将电主轴2的机体部分插接至抱夹1的中空内孔13，然后通过在螺钉孔80内装入安装螺钉，使抱夹1锁紧电主轴2，完成固定装配。在一实施例中，螺钉孔80的数量为2个，贯通于抱夹1的左右两个侧面，达到稳固连接效果。
在一实施例中，参阅图4，抱夹1的一个端面上开设有通孔90，另一个端面A为与安装配合面。在装配抱夹1和机床安装板时，将安装配合面A放置到机床安装板上，在通孔90内装入安装螺钉，即可使抱夹1固定连接在机床安装板上。在一实施例中，通孔90的数量为4个，达到稳固连接效果。
在一实施例中，参阅图6、图8，抱夹1的一个端面上开设有与中空内孔贯通的垫片槽，该垫片槽内设置有垫片100，垫片100的作用在于限定抱夹1的变形，在安装电主轴2时，通过安装螺钉和螺钉孔80进行安装，使抱夹1的中心内孔13发生轻微变形，从而抱紧电主轴2；由于电主轴2为精密部件，为了防止抱夹中心内孔13过度变形而损坏电主轴2，因此通过增加垫片槽和垫片100来调节中心内孔13的变形量。
需要说明的是，本申请除了可以通入冷却气体进行气冷，同样也可以通入冷水进行水冷，通过水平通道、垂直通道以及螺纹堵头的设计，其密封性良好，可以同时适用不同的冷却方式。
通过对上述实施例的详细阐述，可以理解，①本申请通过气冷通道和散热筋的协同作用，极大增强了电主轴的冷却效果；同时采用气体冷却的方式，相比于通水冷却，更便于实现冷却循环，清洁程度更高，在冷却过程中不会产生污水的滴漏、排放和清洁问题，对生产现场的环境影响更小，能适应高清洁度的生产车间。②通过合理的结构设计，抱夹和电主轴便于安装和分离，达到维修方便、更换方便的目的。
本申请具有如下优点：一方面，通过在抱夹内部设置气冷通道，并在气冷通道内输入冷却气体，冷却气体在抱夹内部环绕一周并排出，以带走抱夹内部的热量；另一方面，通过在抱夹的表面上设置多个的散热筋，增大了抱夹表面的散热面积，使抱夹内部的热量易于自然散失，同时也减小了气冷通道和抱夹外表面之间的壁厚，更有利于冷却气体在流通过程中的散热。①本申请通过气冷通道和散热筋的协同作用，极大增强了电主轴的冷却效果；同时采用气体冷却的方式，相比于通水冷却，更便于实现冷却循环，清洁程度更高，在冷却过程中不会产生污水的滴漏、排放和清洁问题，对生产现场的环境影响更小，能适应高清洁度的生产车间。②通过合理的结构设计，抱夹和电主轴便于安装和分离，达到维修方便、更换方便的目的。

Claims (10)

  1. 一种采用抱夹冷却的电主轴，包括抱夹和电主轴，所述抱夹为中空结构，所述电主轴的机体部分固定插接于所述抱夹内；所述抱夹的表面设置有进气口和出气口，所述抱夹的内部设置有气冷通道，所述气冷通道环绕所述抱夹的内部一周，所述气冷通道的两端分别与所述进气口、所述出气口连通；所述抱夹的外表面上还均匀开设有多个的散热筋。
  2. 如权利要求1所述的采用抱夹冷却的电主轴，其中，所述抱夹的两个侧面和底面上分别开设有多个的散热筋，所述侧面上的散热筋之间形成的间隙槽贯通于所述抱夹的前端面和后端面。
  3. 如权利要求1或2所述的采用抱夹冷却的电主轴，其中，所述气冷通道包括多个相互连通的水平通道和垂直通道；所述水平通道和所述垂直通道两两间隔设置，并且相互垂直。
  4. 如权利要求3所述的采用抱夹冷却的电主轴，其中，每条所述水平通道和每条所述垂直通道的末端均设置有螺纹堵头。
  5. 如权利要求1所述的采用抱夹冷却的电主轴，其中，所述采用抱夹冷却的电主轴还包括进气接头和出气接头；所述进气接头固定设置在所述进气口上，所述出气接头固定设置在所述出气口上。
  6. 如权利要求1所述的采用抱夹冷却的电主轴，其中，所述抱夹的两侧面上开设有螺钉孔；所述电主轴和所述抱夹通过所述螺钉孔和安装螺钉固定连接。
  7. 如权利要求6所述的采用抱夹冷却的电主轴，其中，所述螺钉孔的数量为2个，所述螺钉孔贯通于所述抱夹的两个侧面。
  8. 如权利要求1所述的采用抱夹冷却的电主轴，其中，所述抱夹的一端面上开设有通孔；所述抱夹通过通孔和安装螺钉与机床安装板固定连接。
  9. 如权利要求8所述的采用抱夹冷却的电主轴，其中，所述通孔的数量为4 个。
  10. 如权利要求1所述的采用抱夹冷却的电主轴，其中，所述抱夹的一端面上开设有与中空内孔贯通的垫片槽，所述垫片槽内设置有垫片。
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