CN102699691A - Precision numerical control rotary workbench - Google Patents

Precision numerical control rotary workbench Download PDF

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Publication number
CN102699691A
CN102699691A CN2012101853229A CN201210185322A CN102699691A CN 102699691 A CN102699691 A CN 102699691A CN 2012101853229 A CN2012101853229 A CN 2012101853229A CN 201210185322 A CN201210185322 A CN 201210185322A CN 102699691 A CN102699691 A CN 102699691A
Authority
CN
China
Prior art keywords
clamping cylinder
hydraulic clamping
workbench
main shaft
rotary
Prior art date
Application number
CN2012101853229A
Other languages
Chinese (zh)
Inventor
刘福聪
王秀梅
Original Assignee
天津第一机床总厂
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 天津第一机床总厂 filed Critical 天津第一机床总厂
Priority to CN2012101853229A priority Critical patent/CN102699691A/en
Publication of CN102699691A publication Critical patent/CN102699691A/en

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Abstract

The invention relates to a precision numerical control rotary workbench which comprises a workbench base, a workbench spindle and a spindle mandrel fixedly connected with the workbench spindle, wherein a support sleeve is fixedly connected on the workbench base, a rotary workbench bearing outer race and a hydraulic clamping cylinder are installed on the support sleeve, a torque motor stator is fixedly connected on the bottom of the support sleeve, the workbench spindle is installed on the inner race of the rotary workbench bearing, a torque motor rotor is connected below the spindle mandrel, a hydraulic clamping cylinder spring compaction sheet is installed below the workbench spindle, a hydraulic clamping cylinder piston is assembled in a groove of the hydraulic clamping cylinder, and the hydraulic clamping cylinder piston is in contact with the hydraulic clamping cylinder spring compaction sheet. The precision numerical control rotary workbench has the advantages of increasing the bench surface precision and the positioning precision of the workbench under the action of unbalance load impact force, the transmission torque is large, and the assembly is simple and reliable; and the precision numerical control rotary workbench has self-locking function, so that the torque motor can work discontinuously, and the electric energy is saved.

Description

The accurate digital control rotary table

Technical field

The invention belongs to lathe and make the field, particularly relate to a kind of accurate digital control rotary table.

Background technology

NC rotary table is the core component of multiple lathes such as vertical lathe, milling machine, machining center, digital control gear shaper, and the element relationship such as ability of the kinematic accuracy of NC rotary table, bearing capacity, reply impulsive force are to the production and processing ability and the efficient of whole lathe.The current application situation of NC rotary table is still undesirable.

At present, the type of drive of NC rotary table mainly is servomotor or torque motor, and servomotor is fit to high-revolving occasion, and torque motor is fit to the occasion of low-speed big, and the rotating speed that the accurate digital control rotary table generally needs is lower.

The kind of drive of NC rotary table has worm gear transmission and gear pair transmission etc.Facts have proved; Worm gear transmission and gear pair transmission can provide higher transmission accuracy and have higher transmission stability; But influenced by multiple uncertain factors such as machining, assembling and setting; Inevitably there is drive gap in the worm gear transmission process of NC rotary table, influences transmission accuracy then.

The table base of most of NC rotary tables to the supporting way of rotary main shaft be that static pressure supports, YRT three-row cylinder roller bearings or with special material as the common friction support of contact material etc.; Though it is it is better that static pressure supports support stiffness, relatively poor in offset loading force especially unbalance loading impact force action lower table table top end jumping precision; YRT three-row cylinder roller bearing positioning accuracy is constant; Has very big limitation with special material aspect running accuracy, the transmission stability as the common friction support mode of contact material.

The workbench of most of workplace is not to need to rotate continuously, but intermittently rotates according to operating mode, and under the operating mode that needs stop, needing motor to be in enabled always, otherwise can influence positioning accuracy.

Summary of the invention

The present invention provides the accurate digital control rotary table that a kind of positioning accuracy is high, driving torque is big, assembling is simple and reliable and have the self-locking function for solving the technical problem that exists in the known technology.

The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:

The accurate digital control rotary table; Comprise table base, workbench main shaft, with the affixed main shaft mandrel of workbench main shaft; It is characterized in that: be connected with support set on the said table base; Turntable shaft bearing outer-ring and hydraulic clamping cylinder are installed on the said support set; The affixed torque motor stator in support set bottom, said workbench main shaft is installed on the inner ring of turntable bearing, coupling torque rotor below the main shaft mandrel; The below of said workbench main shaft is equipped with hydraulic clamping cylinder spring compression sheet, and the revolution that is made up of rotary table workbench main shaft, turntable bearing inner race, workbench main shaft mandrel, torque motor rotor and hydraulic clamping cylinder spring compression sheet is whole; Constitute the fixedly integral body of rotary table by turntable shaft bearing outer-ring, support set, table base and hydraulic clamping cylinder; Be equipped with the hydraulic clamping cylinder piston in the groove of said hydraulic clamping cylinder, the hydraulic clamping cylinder piston contacts with hydraulic clamping cylinder spring compression sheet.

Advantage and good effect that the present invention has are: because the present invention adopts technique scheme; Promptly whole and fixing wholely realize rotatablely moving and accurate positioning function of accurate digital control panoramic table by what turntable shaft bearing outer-ring, support set, table base and hydraulic clamping cylinder constituted rotary table through the revolution that constitutes rotary table by workbench main shaft, turntable bearing inner race, workbench main shaft mandrel, torque motor rotor and hydraulic clamping cylinder spring compression sheet, and can improve unbalance loading impact force action lower table table top precision.This rotary table positioning accuracy is high, and driving torque is big, assembles simple and reliable; Have the self-locking function, make that torque motor can discontinuous work, saves energy.

Description of drawings

Fig. 1 structural representation of the present invention;

Fig. 2 is the A portion enlarged drawing of Fig. 1.

Among the figure: 1, workbench main shaft; 2, turntable bearing; 3, hydraulic clamping cylinder; 4, hydraulic clamping cylinder piston; 5, hydraulic clamp oil cylinder spring compression sheet; 6, support set; 7, main shaft mandrel; 8, torque motor stator; 9, torque motor rotor; 10, table base.

The specific embodiment

For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1 and Fig. 2, the accurate digital control rotary table, comprise table base 10, workbench main shaft 1, with the affixed main shaft mandrel 7 of workbench main shaft.Be connected with support set 6 on the said table base 1, the outer ring and the hydraulic clamping cylinder 3 of turntable bearing 2 be installed, the affixed torque motor stator 8 in support set 6 bottoms on the said support set.Said workbench main shaft 1 is installed on the inner ring of turntable bearing 2; Coupling torque rotor 9 below main shaft mandrel 7; The below of said workbench main shaft is equipped with hydraulic clamping cylinder spring compression sheet 5, and the revolution that is made up of rotary table workbench main shaft 1, turntable bearing inner race, main shaft mandrel, torque motor rotor and hydraulic clamping cylinder spring compression sheet is whole.Constitute the fixedly integral body of rotary table by turntable shaft bearing outer-ring, support set 6, table base 10 and hydraulic clamping cylinder 3.Be shaped on groove on the said hydraulic clamping cylinder 3, assembling hydraulic clamping cylinder piston 4 in its groove, the hydraulic clamping cylinder piston contacts with hydraulic clamping cylinder spring compression sheet 5.In the present embodiment, said turntable bearing 2 is preferably the YRT turntable bearing that has steel grid chi, and said hydraulic clamping cylinder 3 adopts the hydraulic clamp oil cylinder.

Operating principle of the present invention is:

At the state that does not need hydraulic clamp; Not oil-filled in the oil sac in the middle of hydraulic clamping cylinder 3 and the hydraulic clamping cylinder piston 4; During setting in motion; Torque motor gets; Torque motor rotor 9 rotates with respect to torque motor stator 8, and inner ring, the hydraulic clamping cylinder spring compression sheet 5 of the YRT turntable bearing 2 of the workbench main shaft mandrel 7 that is connected with torque motor rotor 9, workbench main shaft 1, subsidiary steel grid chi are all done identical rotatablely moving with torque motor rotor 9, and the steel grid chi of the YRT turntable bearing 2 of subsidiary steel grid chi is responsible for the feedback of signal so that realize rotatablely moving and accurate positioning function of accurate digital control rotary table.

Needing the state of hydraulic clamp; The related above-mentioned moving component of torque motor is realized accurately location; Oil circuit through hydraulic clamping cylinder 3 in the oil sac in the middle of hydraulic clamping cylinder 3 and the hydraulic clamping cylinder piston 4 is full of hydraulic oil; Make hydraulic clamping cylinder piston 4 move downward, strain takes place downwards and makes to have enough frictional force between hydraulic clamping cylinder spring compression sheet 5 and the support set 6 in the planar section of compressing hydraulic clamping cylinder spring compression sheet 5, makes that the pivotable parts of NC rotary table and standing part are static relatively; After realizing clamping function, make the torque motor outage.When the needs hydraulic clamping system unclamps the clamping function; Make torque motor get electric and have motion and enable; Make in the oil sac in the middle of hydraulic clamping cylinder 3 and the hydraulic clamping cylinder piston 4 oil circuit draining through hydraulic clamping cylinder 3; Hydraulic clamping cylinder spring compression sheet 5 is realized original state, realizes that clamping system unclamps.

Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.

Claims (1)

1. accurate digital control rotary table; Comprise table base, workbench main shaft, with the affixed main shaft mandrel of workbench main shaft; It is characterized in that: be connected with support set on the said table base; Turntable shaft bearing outer-ring and hydraulic clamping cylinder are installed on the said support set; The affixed torque motor stator in support set bottom, said workbench main shaft is installed on the inner ring of turntable bearing, coupling torque rotor below the main shaft mandrel; The below of said workbench main shaft is equipped with hydraulic clamping cylinder spring compression sheet, and the revolution that is made up of rotary table workbench main shaft, turntable bearing inner race, workbench main shaft mandrel, torque motor rotor and hydraulic clamping cylinder spring compression sheet is whole; Constitute the fixedly integral body of rotary table by turntable shaft bearing outer-ring, support set, table base and hydraulic clamping cylinder; Be equipped with the hydraulic clamping cylinder piston in the groove of said hydraulic clamping cylinder, the hydraulic clamping cylinder piston contacts with hydraulic clamping cylinder spring compression sheet.
CN2012101853229A 2012-06-07 2012-06-07 Precision numerical control rotary workbench CN102699691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101853229A CN102699691A (en) 2012-06-07 2012-06-07 Precision numerical control rotary workbench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101853229A CN102699691A (en) 2012-06-07 2012-06-07 Precision numerical control rotary workbench

Publications (1)

Publication Number Publication Date
CN102699691A true CN102699691A (en) 2012-10-03

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CN2012101853229A CN102699691A (en) 2012-06-07 2012-06-07 Precision numerical control rotary workbench

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CN (1) CN102699691A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962479A (en) * 2012-12-14 2013-03-13 天津精诚机床股份有限公司 Workpiece box for gear grinding machine
CN105014480A (en) * 2015-06-30 2015-11-04 广州市昊志机电股份有限公司 Numerical control rotation working table
CN107866680A (en) * 2016-09-23 2018-04-03 兄弟工业株式会社 Rotating plate device and clamping unit
CN110125774A (en) * 2019-05-31 2019-08-16 上海机床厂有限公司 Directly drive type high-precision rotary indexing means
CN110757183A (en) * 2019-11-27 2020-02-07 哈尔滨理工大学 Double-layer elastic sheet clamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508039A (en) * 2009-03-02 2009-08-19 长沙哈量凯帅精密机械有限公司 Six-axis five-linkage spiral taper gear cutting machine tool
CN101596681A (en) * 2009-07-03 2009-12-09 东华大学 The high-precision rotary working-table that torque motor drives
CN102350638A (en) * 2011-09-26 2012-02-15 上海三一精机有限公司 Rotary table clamping device and machine tool
CN202622349U (en) * 2012-06-07 2012-12-26 天津第一机床总厂 Precision numerical control rotation workbench

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508039A (en) * 2009-03-02 2009-08-19 长沙哈量凯帅精密机械有限公司 Six-axis five-linkage spiral taper gear cutting machine tool
CN101596681A (en) * 2009-07-03 2009-12-09 东华大学 The high-precision rotary working-table that torque motor drives
CN102350638A (en) * 2011-09-26 2012-02-15 上海三一精机有限公司 Rotary table clamping device and machine tool
CN202622349U (en) * 2012-06-07 2012-12-26 天津第一机床总厂 Precision numerical control rotation workbench

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962479A (en) * 2012-12-14 2013-03-13 天津精诚机床股份有限公司 Workpiece box for gear grinding machine
CN105014480A (en) * 2015-06-30 2015-11-04 广州市昊志机电股份有限公司 Numerical control rotation working table
CN107866680A (en) * 2016-09-23 2018-04-03 兄弟工业株式会社 Rotating plate device and clamping unit
CN110125774A (en) * 2019-05-31 2019-08-16 上海机床厂有限公司 Directly drive type high-precision rotary indexing means
CN110125774B (en) * 2019-05-31 2020-03-20 上海机床厂有限公司 Direct-drive type high-precision rotary indexing device
CN110757183A (en) * 2019-11-27 2020-02-07 哈尔滨理工大学 Double-layer elastic sheet clamp

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Application publication date: 20121003

C12 Rejection of a patent application after its publication