CN203599537U - High-speed electric ball spindle - Google Patents

High-speed electric ball spindle Download PDF

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Publication number
CN203599537U
CN203599537U CN201320740692.4U CN201320740692U CN203599537U CN 203599537 U CN203599537 U CN 203599537U CN 201320740692 U CN201320740692 U CN 201320740692U CN 203599537 U CN203599537 U CN 203599537U
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CN
China
Prior art keywords
axle core
protective cover
body
pull bar
hole
Prior art date
Application number
CN201320740692.4U
Other languages
Chinese (zh)
Inventor
汤秀清
Original Assignee
广州市昊志机电股份有限公司
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Priority to CN201320740692.4U priority Critical patent/CN203599537U/en
Application granted granted Critical
Publication of CN203599537U publication Critical patent/CN203599537U/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=50712239&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN203599537(U) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

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Abstract

A high-speed electric ball spindle comprises a body, a shaft core, a pull rod, a chuck, an air cylinder, an elastic element and a protective cover. A conical hole with the diameter sequentially increasing from top to bottom is formed in the lower end of the shaft core. The chuck is installed at the lower end of the pull rod and is matched with the conical hole. The air cylinder is installed at the upper end of the body and used for ejecting and pushing the pull rod downwards and an air inlet hole communicated with an external high-pressure air source is formed in an air cylinder body. The elastic element is arranged between the pull rod and the shaft core and the elastic element is used for providing an elastic stress used for ejecting the pull rod upwards. The protective cover is fixed to the lower end of the shaft core, an inner hole allowing the lower end of the shaft core to penetrate through is formed in the protective cover, an annular convergence groove is formed in the lateral wall of the inner hole, a plurality of diversion holes extending in the radial direction of the protective cover are formed in the protective cover, one end of each diversion hole is communicated with the air inlet hole and the other end of each diversion hole extends to the convergence groove. According to the high-speed electric ball spindle, high-pressure air is used for realizing seal of the clearance position between the inner hole of the protective cover and the shaft core, and dust and chippings can be effectively prevented from entering the electric spindle.

Description

A kind of speed electric rolling-ball main shaft

Technical field

The utility model relates to a kind of speed electric rolling-ball main shaft.

Background technology

Speed electric rolling-ball main shaft is applied in the carving milling, grinding of high-precision requirement conventionally.Existing electric main shaft generally includes body, upper at body, bearing block and step are installed respectively in lower two ends, the two ends of axle core component respectively by bearing hinge joint on top chock and step, wherein, axle core component comprises axle core, pull bar, chuck, pull bar can pull the axially-movable of chuck along axle core under the drive of cylinder, cutter or upper slitter are unloaded in realization, be provided with protective cover at axle core lower outside, for fixing step, simultaneously, on this protective cover, be provided with for the traditional endoporus of axle core, for the bottom of axle core is exposed, so that the handling of cutter.

Because cutter is positioned at the bottom of axle core, in process, the meeting such as chip, dust that tool sharpening part produces is entered into the inside of electric main shaft by the gap location of protective cover endoporus and axle core; In order to prevent that chip, dust from impacting electric main shaft, existing electric main shaft normally utilizes seal (as sealing ring) to load above-mentioned gap, but the mode of this sealing, can increase the frictional force of axle core and protective cover.

Utility model content

For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of speed electric rolling-ball main shaft, and it can effectively prevent that dust, chip from entering electric main shaft by one end of mounting cutter, and can not increase the frictional force between protective cover and axle core.

For achieving the above object, the utility model adopts following technical scheme:

A kind of speed electric rolling-ball main shaft, comprises,

Body;

The axle core that is articulated in internal body and can rotates around the central shaft of body, the bottom of axle core is provided with the tapered hole that a diameter increases successively from top to bottom;

The cross-under of the internal activity of axle core has one can be along axle mandrel to movable pull bar;

The chuck that is arranged on pull bar bottom and coordinates with tapered hole;

Be arranged on the cylinder of body upper end for downward pushing tow pull bar, on cylinder block, offer an air admission hole being communicated with extraneous high-pressure air source;

Be arranged at the flexible member between pull bar and axle core, this flexible member is for providing an elastic stress that pull bar is upwards pushed up to pressure;

Be fixed on the protective cover of axle core bottom, on this protective cover, be provided with an endoporus passing for the bottom of axle core, on the sidewall of this endoporus, be provided with the collecting tray of an annular, on protective cover, be provided with multiple tap holes that radially extend along it, one end of tap hole and air admission hole conducting, the other end extends to collecting tray.

On body, offer a via for tap hole is communicated with air admission hole.

The upper end of body and bottom are installed with respectively top chock and step, and the two ends of axle core are arranged on top chock and step by bearing respectively.

Flexible member be socketed on pull bar and be limited at pull bar top ends and axle core between dish spring.

On cylinder block, be also provided with a water inlet being communicated with extraneous cold water source, on body, be provided with a bosh being communicated with water inlet.

Internal body is fixed with a stator, and the external stability of axle core has a rotor corresponding with stator.

The beneficial effects of the utility model are:

Than prior art, the utility model adopts gases at high pressure to realize the sealing of protective cover endoporus and axle core gap location, it can effectively prevent that dust and part from adding the chip producing man-hour and entering into electric main shaft inside, guarantee that electric main shaft normally works, and the mode of air seal can not affect the normal rotation of axle core.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Wherein: 10, body; 11, via; 12, bosh; 13, stator; 20, cylinder; 21, air admission hole; 22, water inlet; 23, piston rod; 30, axle core; 31, rotor; 32, tapered hole; 40, pull bar; 50, chuck; 60, protective cover; 61, tap hole; 62, collecting tray; 70, dish spring; 80, step; 81, intercommunicating pore; 90, top chock.

The specific embodiment

Below, by reference to the accompanying drawings and the specific embodiment, the utility model is described further:

As shown in Figure 1, for a kind of speed electric rolling-ball main shaft of the present utility model, it comprises body 10, axle core 30, pull bar 40, chuck 50, cylinder 20, protective cover 60 and dish spring 70, wherein, be installed with a top chock 90 in the upper end of body 10, bottom is installed with a step 80, the two ends of axle core 30 are equipped by bearing and top chock 90 and step 80 respectively, guarantee that axle core 30 can be around the rotation at a high speed of the central shaft of body 10; On axle core 30, be provided with a through hole axially running through, the bottom of this through hole is a tapered hole 32, and the diameter of this tapered hole 32 from top to bottom increases successively, and the diameter of tapered hole 32 is used for coordinating chuck 50, to realize the clamping to cutter.The cross-under of pull bar 40 activities is in the through hole inside of axle core 30, and can be along the axial activity of axle core 30, chuck 50 is arranged on the bottom of pull bar 40, in the time that pull bar 40 drives chuck 50 to move up, tapered hole 32 clamp gripper 50, tighten up chuck 50, thereby clamp the cutter that is arranged in chuck 50, otherwise in the time that pull bar 40 drives chuck 50 to move down, 50 of chucks can loosening cutter.The cylinder part of cylinder 20 is fixed on the upper end of body 10, and its piston rod 23 is coaxial with pull bar 40, when the piston rod 23 of cylinder 20 stretches out, can push up downwards and press pull bar 40.70 of dish springs are for realizing the reset of pull bar 40, concrete is, dish spring 70 is enclosed within the outside of pull bar 40, it is limited between the top ends and axle core 30 of pull bar 40, and in the time that cylinder 20 pushes up pressure pull bar 40 downwards, dish spring 70 is compressed, when after cylinder 20 pressure releases, the elastic stress of dish spring 70 upwards pushes up pull bar 40 reset that is depressed into initial position and realizes pull bar 40, and after pull bar 40 resets, chuck 50 clamps the cutter of putting in the inner.Protective cover 60 is fixed on the bottom of body 10, certainly because step 80 is to be fixedly connected with body 10, this protective cover 60 can be also the bottom that is fixed on step 80, on protective cover 60, offer an endoporus passing for axle core 30 bottoms, axle core 30 bottoms are through endoporus, make the bottom of chuck 50 expose to protective cover 60, so that cutter inserts; On the endoporus sidewall of protective cover 60, offer the collecting tray 62 of an annular, on protective cover 60, offer multiple tap holes that radially extend along it 61, the medial end of this tap hole 61 and collecting tray 62 conductings.On the sidewall of cylinder 20, offer an air admission hole 21, on body 10, be provided with one along its axially extended via 11, on step 80, offer an intercommunicating pore 81, via 11 bottoms are communicated with the upper end of intercommunicating pore 81, form an inlet channel, the upper end of this inlet channel is communicated with air admission hole 21, bottom is communicated with the outboard end of tap hole 61, that is to say, air admission hole 21 is by via 11, intercommunicating pore 81, tap hole 61 and collecting tray 62 conductings.

The utility model in use, air admission hole 21 is communicated with extraneous high-pressure air source, gases at high pressure enter into annular collecting tray 62 via via 11, intercommunicating pore 81, tap hole 61, discharged by the endoporus of protective cover 60 and the gap of axle core 30, thereby form sealing gland at the endoporus of protective cover 60 and the gap location of axle core 30, effectively prevent that dust, chip from entering into electric main shaft inside.Owing to adopting air seal, between protective cover 60 and axle core 30, can not produce larger frictional force, guarantee axle core 30 flexible rotatings.

On the cylinder body of cylinder 20, be also provided with a water inlet 22 being communicated with extraneous cold water source, on body 10, be provided with a bosh 12 being communicated with water inlet 22.In the time of electric main shaft work, cold water enters bosh 12 by water inlet 22, and heat exchange occurs for the cold water in bosh 12 and body 10, and the heat of body 10 is taken away, and electric main shaft is worked all the time under low temperature environment.

In above-mentioned scheme, adopt dish spring 70 as the parts that pull bar 40 is resetted, certainly, dish spring 70 can be also to adopt other flexible member to replace, such as elastic rubber ring, spring etc.

Body 10 inside are fixed with a stator 13, and 30 external stabilities of axle core have a rotor 31 corresponding with stator 13, after stator 13 energisings, form magnetic field therein, and rotor 31 is High Rotation Speed under the effect of magnetic force.

To one skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the utility model claim.

Claims (6)

1. a speed electric rolling-ball main shaft, is characterized in that, comprises,
Body;
The axle core that is articulated in internal body and can rotates around the central shaft of body, the bottom of axle core is provided with the tapered hole that a diameter increases successively from top to bottom;
The cross-under of the internal activity of axle core has one can be along axle mandrel to movable pull bar;
The chuck that is arranged on pull bar bottom and coordinates with tapered hole;
Be arranged on the cylinder of body upper end for downward pushing tow pull bar, on cylinder block, offer an air admission hole being communicated with extraneous high-pressure air source;
Be arranged at the flexible member between pull bar and axle core, this flexible member is for providing an elastic stress that pull bar is upwards pushed up to pressure;
Be fixed on the protective cover of axle core bottom, on this protective cover, be provided with an endoporus passing for the bottom of axle core, on the sidewall of this endoporus, be provided with the collecting tray of an annular, on protective cover, be provided with multiple tap holes that radially extend along it, one end of tap hole and air admission hole conducting, the other end extends to collecting tray.
2. speed electric rolling-ball main shaft as claimed in claim 1, is characterized in that, offers a via for tap hole is communicated with air admission hole on body.
3. speed electric rolling-ball main shaft as claimed in claim 1, is characterized in that, the upper end of body and bottom are installed with respectively top chock and step, and the two ends of axle core are arranged on top chock and step by bearing respectively.
4. speed electric rolling-ball main shaft as claimed in claim 1, is characterized in that, flexible member be socketed on pull bar and be limited at pull bar top ends and axle core between dish spring.
5. speed electric rolling-ball main shaft as claimed in claim 1, is characterized in that, is also provided with a water inlet being communicated with extraneous cold water source on cylinder block, is provided with a bosh being communicated with water inlet on body.
6. speed electric rolling-ball main shaft as claimed in claim 1, is characterized in that, internal body is fixed with a stator, and the external stability of axle core has a rotor corresponding with stator.
CN201320740692.4U 2013-11-20 2013-11-20 High-speed electric ball spindle CN203599537U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320740692.4U CN203599537U (en) 2013-11-20 2013-11-20 High-speed electric ball spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320740692.4U CN203599537U (en) 2013-11-20 2013-11-20 High-speed electric ball spindle

Publications (1)

Publication Number Publication Date
CN203599537U true CN203599537U (en) 2014-05-21

Family

ID=50712239

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320740692.4U CN203599537U (en) 2013-11-20 2013-11-20 High-speed electric ball spindle

Country Status (1)

Country Link
CN (1) CN203599537U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439298A (en) * 2014-11-12 2015-03-25 广州市昊志机电股份有限公司 Improved electric spindle
CN104439299A (en) * 2014-11-12 2015-03-25 广州市昊志机电股份有限公司 Motorized spindle
CN104625104A (en) * 2014-12-26 2015-05-20 广州市昊志机电股份有限公司 Minitype multifunctional high-speed motorized spindle
CN106181508A (en) * 2015-05-29 2016-12-07 东芝机械株式会社 Lathe
CN107790747A (en) * 2017-10-09 2018-03-13 广州市昊志机电股份有限公司 A kind of electro spindle with dual pressure gas sealing system of taking offence

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439298A (en) * 2014-11-12 2015-03-25 广州市昊志机电股份有限公司 Improved electric spindle
CN104439299A (en) * 2014-11-12 2015-03-25 广州市昊志机电股份有限公司 Motorized spindle
CN104625104A (en) * 2014-12-26 2015-05-20 广州市昊志机电股份有限公司 Minitype multifunctional high-speed motorized spindle
CN104625104B (en) * 2014-12-26 2017-01-25 广州市昊志机电股份有限公司 Minitype multifunctional high-speed motorized spindle
CN106181508A (en) * 2015-05-29 2016-12-07 东芝机械株式会社 Lathe
CN106181508B (en) * 2015-05-29 2018-05-29 东芝机械株式会社 Lathe
US10086485B2 (en) 2015-05-29 2018-10-02 Toshiba Kikai Kabushiki Kaisha Machine tool
CN107790747A (en) * 2017-10-09 2018-03-13 广州市昊志机电股份有限公司 A kind of electro spindle with dual pressure gas sealing system of taking offence

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