CN202851850U - Circulating device in high-speed heavy load ball screw mechanism - Google Patents

Circulating device in high-speed heavy load ball screw mechanism Download PDF

Info

Publication number
CN202851850U
CN202851850U CN201220484057.XU CN201220484057U CN202851850U CN 202851850 U CN202851850 U CN 202851850U CN 201220484057 U CN201220484057 U CN 201220484057U CN 202851850 U CN202851850 U CN 202851850U
Authority
CN
China
Prior art keywords
radius
section
ball
ball screw
steel ball
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CN201220484057.XU
Other languages
Chinese (zh)
Inventor
郑兴民
范铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Haimaike Precision Machinery Manufacturing Co Ltd
Original Assignee
Ningbo Haimaike Precision Machinery Manufacturing Co Ltd
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 Ningbo Haimaike Precision Machinery Manufacturing Co Ltd filed Critical Ningbo Haimaike Precision Machinery Manufacturing Co Ltd
Priority to CN201220484057.XU priority Critical patent/CN202851850U/en
Application granted granted Critical
Publication of CN202851850U publication Critical patent/CN202851850U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Transmission Devices (AREA)

Abstract

The utility model discloses a circulating device in a high-speed heavy load ball screw mechanism. The circulating device in the high-speed heavy load ball screw mechanism comprises a circulating body and is characterized in that inserting feet symmetrical along the center of the circulating body are respectively and fixedly arranged at two ends of the circulating body. Each inserting foot comprises a tongue opening portion and a tripping ball portion. A semi-round tongue opening ball inlet cavity is formed in each tongue opening portion. The radius of an inlet of each tongue opening ball inlet cavity is smaller than the radius of each steel ball in the ball screw mechanism. A semi-round tripping ball inlet cavity is formed in each ball tripping portion. The radius of the ball tripping ball inlet cavity is larger than the radius of each steel ball in the ball screw mechanism. A steel ball inlet cavity is formed by each tongue ball inlet cavity and each ball tripping inlet cavity. The circulating device in the high-speed heavy load ball screw mechanism has the advantages that a circulating curve of the steel balls in the circulating device is optimized, velocity jump points in the circulating process of the steel balls in the circulating device are eliminated, the steel balls are enabled to move more smoothly, limited speed of revolution of the steel balls around axis of a screw shaft is increased, a nominal diameter (DN) value in the ball screw mechanism is further increased, the ball screw mechanism provided with the circulating device can be applied to the high-speed heavy load field.

Description

Circulation means in a kind of high speed heavy-load ball screw
Technical field
The utility model relates to a kind of ball screw pair, relates in particular to the circulation means in a kind of high speed heavy-load ball screw.
Background technique
For to make the production of plastic product reach highi degree of accuracy, high efficiency, injection machine is an inexorable trend to motorized development under world today's situation, and full electric injection molding machine is than in the past more environmental protection of hydraulic type injection moulding machine, energy-conservation.Therefore along with the development of this motorized, its component must also can keep high reliability under bad working environments, and the Performance And Reliability as the ball screw pair of full electric injection molding machine Mechanical Driven part key components and parts just seems particularly important.
At present, domestic traditional ball screw pair all is to be applied in high speed light loading or low-speed heave-load field, and in order to satisfy large load, the fast moving requirement of injection machine injection moulding and matched moulds part, its to DN value of ball screw pair require generally 14～more than 160,000, and the DN value depends on the whether submissive of ball-recirculation curve to a great extent.Therefore, the ball screw pair of design research and development high-speed overload is imperative.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of DN value that increases ball screw pair, makes it applicable to the circulation means in the high speed heavy-load ball screw in high-speed overload field.
The utility model solves the problems of the technologies described above the technological scheme that adopts: the circulation means in a kind of high speed heavy-load ball screw, comprise loop-body, the two ends of described loop-body are fixedly installed respectively the pin of the central point that follows the ring main body, described pin comprises the tongue oral area and the section that blocks, the length of the described section that blocks is greater than the length of described tongue oral area, the described section of blocking is positioned at the outside of described tongue oral area, described tongue oral area is provided with semicircular tongue mouth goal chamber, inlet's radius in described tongue mouth goal chamber is less than the radius of steel ball in the ball screw pair, the described section of blocking is provided with the semicircular goal chamber of blocking, the radius in the described goal chamber of blocking is greater than the radius of steel ball in the ball screw pair, and described tongue mouth goal chamber and the described goal chamber of blocking form a steel ball goal chamber jointly.
Inlet's radius in described tongue mouth goal chamber is 0.9～0.95 times of steel ball radius in the described ball screw pair, in same cross section, the throw of eccentric of the inlet center in described tongue mouth goal chamber and the centre of sphere of steel ball is 0.9～1.2mm, and the radius in the described goal chamber of blocking is 1.05～1.15 times of steel ball radius in the described ball screw pair.
Be provided with the steel ball passage in the described loop-body, the steel ball goal chamber at described steel ball passage and two ends forms the circulation canal of steel ball jointly, the cross section of described circulation canal equates with described radius of blocking the goal chamber for round and cross section radius, the center line of described circulation canal is the movement locus of the steel ball centre of sphere, be the cyclic curve of steel ball, described cyclic curve is along the central point of described loop-body, described cyclic curve from steel ball goal chamber to central point successively by the helix extension, the BridgeCurve section, fillet section and straightway form, and described helix extension is by relation
Figure 572018DEST_PATH_IMAGE002
Determine,
Wherein: the coordinate of putting on (x, y, z) expression cyclic curve, L represents the helical pitch of ball screw pair, d 0The nominal diameter of screw mandrel in the expression ball screw pair;
Described BridgeCurve section is by the projection relation formula in the XOZ face
Figure 426841DEST_PATH_IMAGE004
With the projection relation formula in the XOY face Common definite, wherein:
Figure 601788DEST_PATH_IMAGE008
The projection center of circle of expression BridgeCurve section in the XOZ face, R 1The radius of the projection of expression BridgeCurve section in the XOZ face;
Described fillet section is by the projection relation formula in the X ' OZ face
Figure 603111DEST_PATH_IMAGE010
With the projection relation formula in the XOY face
Figure 425573DEST_PATH_IMAGE012
,
Figure 630290DEST_PATH_IMAGE014
Common determine, wherein: X ' OZ face is obtained after Z axis rotation alpha ° by the XOZ face, and α represents the angle that the XOZ face rotates around Z axis,
Figure 829190DEST_PATH_IMAGE016
The projection center of circle of expression fillet section in X ' OZ face,
Figure 685019DEST_PATH_IMAGE018
Be illustrated in the point in the projection in the X ' OZ face, R 2The radius of the projection of expression fillet section in X ' OZ face,
Figure 678383DEST_PATH_IMAGE020
Be illustrated in the starting point of the fillet section projection in the XOY face, the circulation number of turns after n represents to round up;
Described straightway is by the projection relation formula z=constant A in the XOZ face and the projection relation formula in the XOY face
Figure 432712DEST_PATH_IMAGE022
Common definite, wherein constant A is installed the external diameter decision by the maximum of the nut on the ball screw pair.
The material of described loop-body and described pin is synthetic resin.
The outer surface of the outer surface of the joint of described loop-body and described pin, described tongue oral area, the described section that blocks is respectively arranged with depression, can prevent that this circulation means from producing distortion in injection moulding process, so that its wall thickness is even.
Compared with prior art, the utility model has the advantages that since inlet's radius in tongue mouth goal chamber less than the radius of steel ball in the ball screw pair, block the radius in goal chamber greater than the radius of steel ball in the ball screw pair, be conducive to scooping up and turning to of steel ball in the cyclic process, guaranteed stablely when steel ball is scooped up at tongue mouth place to follow the ring curvilinear motion, reduced the double swerve in the steel ball circulation steering procedure, improve the revolution speed of steel ball wire winding rod axis, thereby improved the DN value of ball screw pair integral body; Formed by helix extension, BridgeCurve section, fillet section and straightway successively owing to cyclic curve again, steel ball is optimized at the cyclic curve of this circulation means inside, eliminated steel ball point of the velocity jump in the movement process in circulation means, make the steel ball motion more smooth, improved the velocity limit of steel ball wrapping wire thick stick axis revolution, further increased the DN value of ball screw pair, so that the ball screw pair that this circulation means is installed is applicable to the high-speed overload field.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is the cross sectional representation of loop-body of the present utility model;
Fig. 3 is perspective view of the present utility model;
Fig. 4 is the schematic diagram in steel ball goal of the present utility model chamber;
Fig. 5 be steel ball goal of the present utility model chamber with steel ball cooperate the signal enlarged view;
Fig. 6 is the perspective view of cyclic curve of the present utility model in the XOZ face;
Fig. 7 is the perspective view of cyclic curve of the present utility model in the XOY face.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, circulation means in a kind of high speed heavy-load ball screw, comprise loop-body 1, the two ends of loop-body 1 are wholely set respectively the pin 2 of the central point that follows ring main body 1, pin 2 comprises tongue oral area 21 and the section 22 that blocks, block the length of section 22 greater than the length of tongue oral area 21, the section 22 that blocks is positioned at the outside of tongue oral area 21, the joint of loop-body 1 and pin 2, the outer surface of tongue oral area 21, the outer surface of section 22 of blocking is respectively arranged with depression 3, tongue oral area 21 is provided with semicircular tongue mouth goal chamber 211, inlet's radius R in tongue mouth goal chamber 211 TongueBe steel ball radius R in the ball screw pair Ball0.92 times, and in same cross section, the inlet center in tongue mouth goal chamber 211 and the eccentric distance e of the steel ball centre of sphere are 1.1mm, the section 22 that blocks is provided with the semicircular goal chamber 221 of blocking, the radius R in the goal chamber 221 of blocking GearBe steel ball radius R in the ball screw pair Ball1.1 times, tongue mouth goal chamber 211 and the steel ball goal chamber of 221 common compositions, goal chamber of blocking, be provided with steel ball passage 11 in the loop-body 1, the steel ball goal chamber at steel ball passage 11 and two ends forms the circulation canal of steel ball jointly, and the cross section of circulation canal is the radius R in circle and cross section radius and the goal chamber 221 of blocking GearEquate, the center line of circulation canal is the movement locus of the steel ball centre of sphere, be the cyclic curve of steel ball, cyclic curve follows the central point of ring main body 1, cyclic curve is comprised of helix extension 4, BridgeCurve section 5, fillet section 6 and straightway 7 successively from steel ball goal chamber to central point, and helix extension 4 is by relation
Figure 107407DEST_PATH_IMAGE025
Determine,
Wherein: the coordinate of putting on (x, y, z) expression cyclic curve, L represents the helical pitch of ball screw pair, d 0The nominal diameter of screw mandrel in the expression ball screw pair;
BridgeCurve section 5 is by the projection relation formula in the XOZ face
Figure 630793DEST_PATH_IMAGE027
With the projection relation formula in the XOY face Common definite, wherein:
Figure DEST_PATH_IMAGE030
The projection center of circle of expression BridgeCurve section in the XOZ face, R 1The radius of the projection of expression BridgeCurve section in the XOZ face;
Fillet section 6 is by the projection relation formula in the X ' OZ face
Figure DEST_PATH_IMAGE032
With the projection relation formula in the XOY face
Figure 426896DEST_PATH_IMAGE034
,
Figure 702020DEST_PATH_IMAGE036
Common determine, wherein: X ' OZ face is obtained after Z axis rotation alpha ° by the XOZ face, and α represents the angle that the XOZ face rotates around Z axis,
Figure 535371DEST_PATH_IMAGE037
The projection center of circle of expression fillet section in X ' OZ face,
Figure DEST_PATH_IMAGE039
Be illustrated in the point in the projection in the X ' OZ face, R 2The radius of the projection of expression fillet section in X ' OZ face, Be illustrated in the starting point of the fillet section projection in the XOY face, the circulation number of turns after n represents to round up (number of turns that for example circulates is 3.5 circles, and then n gets 4);
Straightway 7 is by the projection relation formula z=constant A in the XOZ face and the projection relation formula in the XOY face
Figure DEST_PATH_IMAGE043
Common definite, wherein constant A is installed the external diameter decision by the maximum of the nut on the ball screw pair.
In above-described embodiment, the material of loop-body 1 and pin 2 is synthetic resin, the radius R in tongue mouth goal chamber 211 TongueSteel ball radius R in ball screw pair according to actual needs Ball0.9～0.95 times scope in select, in same cross section, the center in tongue mouth goal chamber 211 and the eccentric distance e of the steel ball centre of sphere can be selected the radius R in the goal chamber 221 of blocking in the scope of 0.9～1.2mm GearSteel ball radius R in ball screw pair according to actual needs Ball1.05～1.15 times scope in select.

Claims (5)

1. the circulation means in the high speed heavy-load ball screw, comprise loop-body, it is characterized in that the two ends of described loop-body are fixedly installed respectively the pin of the central point that follows the ring main body, described pin comprises the tongue oral area and the section that blocks, the length of the described section that blocks is greater than the length of described tongue oral area, the described section of blocking is positioned at the outside of described tongue oral area, described tongue oral area is provided with semicircular tongue mouth goal chamber, inlet's radius in described tongue mouth goal chamber is less than the radius of steel ball in the ball screw pair, the described section of blocking is provided with the semicircular goal chamber of blocking, the radius in the described goal chamber of blocking is greater than the radius of steel ball in the ball screw pair, and described tongue mouth goal chamber and the described goal chamber of blocking form a steel ball goal chamber jointly.
2. the circulation means in a kind of high speed heavy-load ball screw as claimed in claim 1, the inlet's radius that it is characterized in that described tongue mouth goal chamber is 0.9～0.95 times of steel ball radius in the described ball screw pair, in same cross section, the throw of eccentric of the inlet center in described tongue mouth goal chamber and the centre of sphere of steel ball is 0.9～1.2mm, and the radius in the described goal chamber of blocking is 1.05～1.15 times of steel ball radius in the described ball screw pair.
3. the circulation means in a kind of high speed heavy-load ball screw as claimed in claim 1, it is characterized in that being provided with in the described loop-body steel ball passage, the steel ball goal chamber at described steel ball passage and two ends forms the circulation canal of steel ball jointly, the cross section of described circulation canal equates with described radius of blocking the goal chamber for round and cross section radius, the center line of described circulation canal is the movement locus of the steel ball centre of sphere, be the cyclic curve of steel ball, described cyclic curve is along the central point of described loop-body, described cyclic curve from steel ball goal chamber to central point successively by the helix extension, the BridgeCurve section, fillet section and straightway form, and described helix extension is by relation
Figure 447518DEST_PATH_IMAGE002
Determine,
Wherein: the coordinate of putting on (x, y, z) expression cyclic curve, L represents the helical pitch of ball screw pair, d 0The nominal diameter of screw mandrel in the expression ball screw pair;
Described BridgeCurve section is by the projection relation formula in the XOZ face
Figure 114123DEST_PATH_IMAGE004
With the projection relation formula in the XOY face
Figure 192937DEST_PATH_IMAGE006
Common definite, wherein: The projection center of circle of expression BridgeCurve section in the XOZ face, R 1The radius of the projection of expression BridgeCurve section in the XOZ face;
Described fillet section is by the projection relation formula in the X ' OZ face
Figure 652442DEST_PATH_IMAGE010
With the projection relation formula in the XOY face
Figure 540763DEST_PATH_IMAGE012
,
Figure 423269DEST_PATH_IMAGE014
Common determine, wherein: X ' OZ face is obtained after Z axis rotation alpha ° by the XOZ face, and α represents the angle that the XOZ face rotates around Z axis,
Figure 962703DEST_PATH_IMAGE016
The projection center of circle of expression fillet section in X ' OZ face,
Figure 905252DEST_PATH_IMAGE018
Be illustrated in the point in the projection in the X ' OZ face, R 2The radius of the projection of expression fillet section in X ' OZ face,
Figure DEST_PATH_IMAGE020
Be illustrated in the starting point of the fillet section projection in the XOY face, the circulation number of turns after n represents to round up;
Described straightway is by the projection relation formula z=constant A in the XOZ face and the projection relation formula in the XOY face
Figure DEST_PATH_IMAGE022
Common definite, wherein constant A is installed the external diameter decision by the maximum of the nut on the ball screw pair.
4. the circulation means in a kind of high speed heavy-load ball screw as claimed in claim 1 is characterized in that the material of described loop-body and described pin is synthetic resin.
5. the circulation means in a kind of high speed heavy-load ball screw as claimed in claim 1 is characterized in that the outer surface of the joint of described loop-body and described pin, described tongue oral area, the outer surface of the described section that blocks are respectively arranged with depression.
CN201220484057.XU 2012-09-21 2012-09-21 Circulating device in high-speed heavy load ball screw mechanism Expired - Lifetime CN202851850U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201220484057.XU CN202851850U (en) 2012-09-21 2012-09-21 Circulating device in high-speed heavy load ball screw mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201220484057.XU CN202851850U (en) 2012-09-21 2012-09-21 Circulating device in high-speed heavy load ball screw mechanism

Publications (1)

Publication Number Publication Date
CN202851850U true CN202851850U (en) 2013-04-03

Family

ID=47983056

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201220484057.XU Expired - Lifetime CN202851850U (en) 2012-09-21 2012-09-21 Circulating device in high-speed heavy load ball screw mechanism

Country Status (1)

Country Link
CN (1) CN202851850U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889351A (en) * 2012-09-21 2013-01-23 宁波海迈克精密机械制造有限公司 Circulating device in high-speed heavy-load ball screw assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889351A (en) * 2012-09-21 2013-01-23 宁波海迈克精密机械制造有限公司 Circulating device in high-speed heavy-load ball screw assembly
CN102889351B (en) * 2012-09-21 2015-07-08 宁波海迈克精密机械制造有限公司 Circulating device in high-speed heavy-load ball screw assembly

Similar Documents

Publication Publication Date Title
CN103950143B (en) Multi-station injection molding mold
CN105090411B (en) Ball screw framework and transfer
CN202851850U (en) Circulating device in high-speed heavy load ball screw mechanism
CN203919537U (en) Multi-station injection mould
CN202914657U (en) High-speed and heavy-load ball screw assembly
CN206796465U (en) A kind of electronic injection moulding apparatus of high-performance
AU2006312235B2 (en) Machine for compression molding closure shells
CN102889351A (en) Circulating device in high-speed heavy-load ball screw assembly
CN206796466U (en) A kind of electronic injecting mechanism of high-performance
CN203125885U (en) Sliding mechanism of elbow core-pulling die
CN102889350A (en) High-speed heavy-load ball screw assembly
CN108456408A (en) Environmentally friendly high rigidity antistatic lipstick tube and preparation method thereof
CN108943624A (en) A kind of electronic injection moulding apparatus of high-performance
CN216329743U (en) Mold core mechanism and product injection mold with helical teeth and screw teeth
CN206972830U (en) The special worm-gear speed reducer of snowplough
CN106079265A (en) Automatically move back the injection mold of thread
CN207028096U (en) Nib cavity injection mold structure
CN105538610B (en) A kind of mould of the plastic cement part of energy injection moulding belt arc endoporus
CN101493115A (en) High speed pure rolling bearing
CN204712366U (en) A kind of injection molding machine mold clamping mechanism
CN105984078A (en) Injection molding device driven by single servo motor
CN206796318U (en) One kind tiltedly takes out interior threaded mechanism
CN201190771Y (en) High speed heavy-load ball screw
CN219618417U (en) Parting core-pulling mechanism and mold suitable for molding product with spiral blade
CN103407075B (en) A kind of internal and external threads plastic part mould of full-automatic molding band difference pitch

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20130403

CX01 Expiry of patent term