CN215171959U - Double-nut cooling type ball screw - Google Patents

Double-nut cooling type ball screw Download PDF

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Publication number
CN215171959U
CN215171959U CN202023179086.9U CN202023179086U CN215171959U CN 215171959 U CN215171959 U CN 215171959U CN 202023179086 U CN202023179086 U CN 202023179086U CN 215171959 U CN215171959 U CN 215171959U
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China
Prior art keywords
hole section
nut
hole
channel
cooling
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CN202023179086.9U
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Chinese (zh)
Inventor
郭名哲
陈韦廷
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Hiwin Technologies Corp
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Hiwin Technologies Corp
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Priority to CN202023179086.9U priority Critical patent/CN215171959U/en
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Abstract

A double-nut cooling type ball screw comprises a first nut, a second nut, a spacer and a conduction group, wherein the first nut is arranged on the screw through a plurality of first balls, the second nut is arranged on the screw through a plurality of second balls, the spacer is arranged between the first nut and the second nut, the conduction group is communicated with the first nut and the second nut, the first nut is provided with a first connection channel in a step design, the second nut is provided with a second connection channel in a step design, the conduction group is provided with a stopping part abutting against the step and a communication part communicated with the first connection channel and the second connection channel, so that the conduction group is arranged in the first nut and the second nut, the locking process is eliminated, abrasion is avoided, and the outer diameters of the first nut and the second nut can be enlarged according to customer requirements.

Description

Double-nut cooling type ball screw
Technical Field
The present invention relates to a transmission device, and more particularly to a double-nut cooling type ball screw.
Background
A dual-nut cooling type ball screw disclosed in patent No. I606198, referring to fig. 1 to 3, mainly comprising a first nut L having a first cooling channel group L1, a second nut M having a second cooling channel group M1, a spacer N assembled between the first nut L and the second nut M, the spacer N having a plurality of receiving grooves N1, and a plurality of guiding groups P assembled at the joint between the first cooling channel group L1 and the second cooling channel group M1, respectively, whereby cooling fluid can circulate through the first cooling channel group L1 and the second cooling channel group M1 of the first and second nuts L, M, so as to achieve the effect of cooling the first and second nuts L, M.
The guide group P has a guide member P1 for communicating the first cooling channel group L1 and the second cooling channel group M1, the guide member P1 has a body portion P11 corresponding to the first cooling channel group L1 and the second cooling channel group M1 and a lug portion P12 corresponding to the receiving groove N1, and the guide member P1 is fastened by the latch member Q inserted into the lug portion P12 for locking;
however, since the lug part P12 is located only on one side of the guide part P1, the latch member Q is locked to the lug part P12, so that the force is likely to be unevenly applied, and referring to fig. 3, the body part P11 cannot be firmly attached, resulting in a problem of sealability.
In addition, in order to lock the pin member Q to the lug part P12, the outer diameters of the first nut L and the second nut M cannot be enlarged, otherwise the lug part P12 cannot be exposed from between the first nut L and the second nut M, and the lug part P12 cannot be locked.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can overcome two nut cooled ball screw of aforementioned shortcoming.
To achieve the above object, the present invention provides a double-nut cooling type ball screw, including:
a screw;
the first nut is arranged on the screw rod in a threaded mode through a plurality of first balls and comprises a first cooling channel group formed inside the first nut, the first cooling channel group is provided with at least one first connecting channel, the first connecting channel is provided with a first hole section and a second hole section which are connected, the aperture of the first hole section is larger than that of the second hole section, a first step surface is arranged between the first hole section and the second hole section, and the first nut is provided with an input port and an output port which are communicated with the first cooling channel group;
the second nut is arranged on the screw rod in a threaded mode through a plurality of second balls and comprises a second cooling channel group formed inside the second nut, the second cooling channel group is provided with at least one second connecting channel, the second connecting channel is provided with a third hole section and a fourth hole section which are connected, the aperture of the third hole section is larger than that of the fourth hole section, a second step surface is arranged between the third hole section and the fourth hole section, and the fourth hole section is opposite to the second hole section of the first nut;
the conduction group extends into the first connection channel and the second connection channel which are opposite, two ends of the conduction group are respectively provided with a stop part, a communication part is connected between the two stop parts, the conduction group is provided with a through hole, the through hole penetrates through the stop parts and the communication parts, one of the stop parts is positioned in the first hole section and abuts against the first step surface, the other stop part is positioned in the third hole section and abuts against the second step surface, and the communication part penetrates through the second hole section and the fourth hole section.
In view of the above, utility model when the equipment, only need with switch on the group certainly first interface channel the second interface channel equipment to screw with interior screw thread through outer screw thread, and avoid the process of lock solid, can avoid wearing and tearing, and can enlarge according to customer's demand the external diameter of first nut, second nut.
Drawings
Fig. 1 is a schematic diagram of a prior art assembly.
Fig. 2 is a cross-sectional view of the prior art.
Fig. 3A is a schematic diagram illustrating that the guide set of the prior art cannot be attached reliably.
Fig. 3B is a schematic diagram illustrating that the guide set of the prior art cannot be attached reliably.
Fig. 4 is a schematic view of a three-dimensional assembly of the double-nut cooling type ball screw of the present invention.
Fig. 5 is an exploded view of the first embodiment.
Fig. 6 is a partial sectional view of the first embodiment.
Fig. 7 is an exploded view of the second embodiment.
FIG. 8 is a partial cross-sectional view of one version of the second embodiment.
FIG. 9 is a partial cross-sectional view of another version of the second embodiment.
Description of the symbols in the drawings:
the prior art is as follows:
first nut L
First cooling passage group L1
Second nut M
Second cooling passage group M1
Spacing piece N
Groove N1
Guide group P
Guide member P1
Body P11
Lug part P12
Bolt piece Q
The utility model discloses:
screw 10
First ball 11
Second ball 12
Spacing piece 40
Through-hole 41
Containing groove 42
Sealing element 60
The first embodiment:
first nut 20
Head end 20A
First connection end 20B
First cooling passage group 21
First connecting passage 211
First bore section 211A
Second bore section 211B
First step surface 211C
First cooling channel 212
Input port 22
Outlet 23
Second nut 30
Second connecting end portion 30A
End 30B
Second cooling passage group 31
Second connecting passage 311
Third bore segment 311A
Fourth bore section 311B
Second step surface 311C
Second cooling channel 312
Conducting group 50
First engaging fitting 51
First pipe 511
Inner wall surface 511A
Inner screw thread 511B
Second engagement fitting 52
Second pipe 521
Head 522
Body 523
Outer wall surface 523A
External screw thread 523B
Stopper 50A
Communication part 50B
Through hole 50C
Second embodiment:
first nut 70
Head end 70A
First connecting end 70B
First cooling passage group 71
First connecting passage 711
First hole segment 711A
Second hole segment 711B
First cooling channel 712
Input port 72
An output port 73
Second thread 74, 82
Second nut 80
Second connecting end portion 80A
End 80B
Second cooling passage group 81
Second connecting channel 811
Third bore segment 811A
Fourth bore segment 811B
Second cooling channel 812
Conducting part 90
Stop part 90A
Communication part 90B
Through hole 90C
First thread 91
Step surface S
Detailed Description
The technical solution of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals.
Referring to fig. 4 to 6, the first embodiment of the dual nut cooling type ball screw of the present invention includes a screw 10, a first nut 20, a second nut 30, a spacer 40, a conducting set 50 and a plurality of sealing elements 60.
The first nut 20 is screwed on the screw rod 10 by a plurality of first balls 11, and includes a head end 20A, a first connection end 20B opposite to the head end 20A, and a first cooling channel group 21 formed inside the first nut 20, the first cooling channel group 21 has a first connection channel 211 and a first cooling channel 212, the first cooling channel 212 is communicated with the first connection channel 211, the first connection channel 211 is of a stepped design, the first connection channel 211 has a first hole section 211A and a second hole section 211B connected, the aperture of the first hole section 211A is larger than that of the second hole section 211B, a first step 211C is provided between the first hole section 211A and the second hole section 211B, the second hole section 211B penetrates through the end surface of the first connection end 20B, the first nut 20 has an input port 22 formed in the head end portion 20A and communicating with the first cooling passage group 21, and an output port 23 formed in the head end portion 20A and communicating with the first cooling passage group 21.
The second nut 30 is screwed on the screw rod 10 through a plurality of second balls 12, and includes a second connection end 30A opposite to the first connection end 20B, a tail end 30B opposite to the second connection end 30A, and a second cooling channel group 31 formed inside the second nut 30, the second cooling channel group 31 has a second connection channel 311 and a second cooling channel 312, the second cooling channel 312 is communicated with the second connection channel 311, the second connection channel 311 has a third hole section 311A and a fourth hole section 311B connected, the aperture of the third hole section 311A is larger than that of the fourth hole section 311B, a second step 311C is provided between the third hole section 311A and the fourth hole section 311B, the fourth hole section 311B penetrates through the end surface of the second connection end 30A, and the fourth hole section 311B is opposite to the second hole section 211B of the first nut 20.
In this embodiment, the number of the first connecting channels 211 and the second connecting channels 311 is two, the input port 22 is connected to one of the first connecting channels 211 at one end of the head portion 20A, the other end of the first connecting channel 211 is communicated with one of the second connecting channels 311, one end of the other first connecting channel 211 is communicated with the other second connecting channel 311, the other end of the other first connecting channel 211 is communicated with the first cooling channel 212, and the output port 23 is connected to one end of the first cooling channel 212 at the head portion 20A.
The spacer 40 is fixed between the first connection end 20B and the second connection end 30A, and the spacer 40 includes a through hole 41 for the screw rod 10 to pass through, and a receiving groove 42 corresponding to the second hole section 211B and the fourth hole section 311B and formed by recessing the peripheral surface of the spacer toward the through hole 41.
The conducting set 50 is disposed in the accommodating slot 42. The conducting set 50 is connected between the second hole section 211B and the fourth hole section 311B, the conducting set 50 extends into the first connecting channel 211 and the second connecting channel 311, the first connecting channel 211 is connected with the second connecting channel 311, the two ends of the conducting set 50 are respectively provided with a stopping part 50A, the two stopping parts 50A are connected with the communicating part 50B, the outer diameter of each stopping part 50A is larger than that of the communicating part 50B, the outer diameter of each stopping part 50A is also larger than the diameters of the fourth hole section 311B and the second hole section 211B, the conducting set 50 is provided with a through hole 50C, and the through hole 50C penetrates through the stopping part 50A and the communicating part 50B, one of the stop portions 50A is located at the first hole section 211A and abuts against the first step surface 211C, the other stop portion 50A is located at the third hole section 311A and abuts against the second step surface 311C, and the communication portion 50B penetrates through the second hole section 211B, the fourth hole section 311B and the accommodating groove 42.
The plurality of sealing elements 60 are sleeved on the communication portion 50B, one sealing element 60 is located between the stopper portion 50A and the first step surface 211C, and the other sealing element 60 is located between the stopper portion 50A and the second step surface 311C.
In this embodiment, the conducting set 50 has a first connecting fitting 51 and two second connecting fittings 52, the first connecting fitting 51 is a hollow tube, the first connecting fitting 51 has a first pipe 511, the first connecting fitting 51 has an inner wall surface 511A facing the first pipe 511, the inner wall surface 511A has an inner screw thread 511B, the second connecting fitting 52 is a hollow member, and can be a hollow bolt, the second connecting fitting 52 has a second pipe 521, the second connecting fitting 52 has a head 522 and a body 523 connected, the head 522 is a stop portion 50A of the conducting set 50, the second pipe 521 passes through the head 522 and the body 523, the body 523 has an outer wall surface 523A facing away from the second pipe 521, the outer wall surface 523A has an outer screw thread 523B, the two second connecting fittings 52 are inserted into two ends of the first connecting fitting 51, the body 523 of the two second fittings 52 are connected to oppositely and pass through the first pipe 511 to form a connecting portion 50B, the inner screw 511B is screwed with the outer screw 523B to communicate the first pipe 511 with the second pipe 521 to form a through hole 50C.
Referring to fig. 7 to 9, a second embodiment of the dual nut cooling type ball screw of the present invention includes a screw 10, a first nut 70, a second nut 80, a spacer 40, a conducting member 90 and a sealing element 60.
The first nut 70 is screwed to the screw 10 by a plurality of first balls 11, and includes a head end portion 70A, a first connection end portion 70B opposite to the head end portion 70A, and a first cooling passage group 71 formed inside the first nut 70, the first cooling passage group 71 having a first connection passage 711 and a first cooling passage 712, the first cooling passage 712 communicating with the first connection passage 711, the first connection passage 711 having a first hole section 711A and a second hole section 711B connected, the second hole section 711B penetrating an end surface of the first connection end portion 70B, the first nut 70 having an input port 72 formed in the head end portion 70A and communicating with the first cooling passage group 71, and an output port 73 formed in the head end portion 70A and communicating with the first cooling passage group 71.
The second nut 80 is screwed to the screw 10 by a plurality of second balls 12, and includes a second connection end portion 80A opposite to the first connection end portion 70B, a tail end portion 80B opposite to the second connection end portion 80A, and a second cooling passage group 81 formed inside the second nut 80, the second cooling passage group 81 has a second connection passage 811 and a second cooling passage 812, the second cooling passage 812 communicates with the second connection passage 811, the second connection passage 811 has a third hole section 811A and a fourth hole section 811B connected thereto, the fourth hole section 811B penetrates through an end surface of the second connection end portion 80A, and the fourth hole section 811B is opposite to the second hole section 711B of the first nut 70.
In the present embodiment, the number of the first connecting channels 711 and the second connecting channels 811 is two, the input port 72 is connected to one of the first connecting channels 711 at one end of the head portion 70A, the other end of the first connecting channel 711 is communicated with the second connecting channel 811, one of the other first connecting channels 711 is communicated with the second connecting channel 811, the other end of the other first connecting channel 711 is communicated with the first cooling channel 712, and the output port 73 is connected to one of the first cooling channel 712 at one end of the head portion 70A.
The spacer 40 is fixed between the first connection end 70B and the second connection end 80A, and the spacer 40 includes a through hole 41 through which the screw 10 passes, and a receiving groove 42 corresponding to the second hole section 711B and the fourth hole section 811B and formed by recessing the circumferential surface of the spacer toward the through hole 41.
The conducting member 90 is disposed in the accommodating slot 42. The conducting member 90 extends into the first connecting channel 711 and the second connecting channel 811 opposite to each other, so that the first connecting channel 711 is communicated with the second connecting channel 811, one end of the conducting member 90 is provided with a stopping portion 90A, the stopping portion 90A is connected with the communicating portion 90B, the outer diameter of the stopping portion 90A is larger than that of the communicating portion 90B, the outer peripheral surface of the communicating portion 90B is provided with a first thread 91, the conducting member 90 is provided with a through hole 90C, and the through hole 90C penetrates through the stopping portion 90A and the communicating portion 90B.
The sealing element 60 is sleeved on the communication portion 90B and abuts against the stopping portion 90A.
In one aspect, referring to FIG. 7, 8, the first connecting channel 711 is designed in a stepped manner, the aperture of the first hole section 711A is larger than that of the second hole section 711B, a stepped surface S is formed between the first hole section 711A and the second hole section 711B, the hole wall around the fourth hole section 811B is provided with a second thread 82, the outer diameter of the stopping portion 90A is larger than that of the second hole section 711B, the stopping portion 90A is located in the first hole section 711A and abuts against the stepped surface S, the communicating portion 90B is inserted in the second hole section 711B and the fourth hole section 811B, the first thread 91 of the communicating portion 90B is screwed with the second thread 82 of the fourth hole section 811B, and the sealing element 60 is located between the stepped surface S and the stopping portion 90A.
In another aspect, referring to fig. 9, the second connecting channel 811 is designed in a stepped manner, the aperture of the third hole section 811A is larger than the aperture of the fourth hole section 811B, a stepped surface S is provided between the third hole section 811A and the fourth hole section 811B, the hole wall around the second hole section 711B has a second thread 74, the outer diameter of the stopping portion 90A is larger than the aperture of the fourth hole section 811B, the stopping portion 90A is located in the third hole section 811A and abuts against the stepped surface S, the communicating portion 90B is disposed through the second hole section 711B and the fourth hole section 811B, the first thread 91 of the communicating portion 90B and the second thread 74 of the second hole section 711B are screwed together, and the sealing element 60 is located between the stepped surface S and the stopping portion 90A.
In two aspects of the second embodiment, the conducting element 90 is a pre-coating type leakproof chemical glue screw, and thus can be tightly fitted to the second thread 82 of the fourth hole section 811B or the second thread 74 of the second hole section 711B in another aspect, so as to directly provide a leakproof effect.
The above is the configuration description of the main components of the embodiments of the present invention, and as for the efficacy description of the present invention, the following are illustrated:
referring to fig. 6, in the first embodiment of the present invention, only the first connecting channel 211 and the second connecting channel 311 are assembled to form the conducting set 50, and the outer screw thread 523B is screwed with the inner screw thread 511B, so as to avoid the locking process, avoid abrasion, and enlarge the outer diameters of the first nut 20 and the second nut 30 according to the requirement of the user.
Referring to fig. 8 and 9, in the second embodiment of the present invention, only the first connecting channel 711 and the second connecting channel 811 need to be assembled with the conducting member 90, and the first screw teeth 91 are screwed with the second screw teeth 74 and 82, so as to avoid the locking process, avoid abrasion, and enlarge the outer diameters of the first nut 70 and the second nut 80 according to the requirement of the customer.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A double-nut cooled ball screw comprising:
a screw;
the first nut is arranged on the screw rod in a threaded mode through a plurality of first balls and comprises a first cooling channel group formed inside the first nut, the first cooling channel group is provided with a first connecting channel, the first connecting channel is provided with a first hole section and a second hole section which are connected, the aperture of the first hole section is larger than that of the second hole section, a first step surface is arranged between the first hole section and the second hole section, and the first nut is provided with an input port and an output port which are communicated with the first cooling channel group;
the second nut is screwed on the screw rod through a plurality of second balls and comprises a second cooling channel group formed inside the second nut, the second cooling channel group is provided with a second connecting channel, the second connecting channel is provided with a third hole section and a fourth hole section which are connected, the aperture of the third hole section is larger than that of the fourth hole section, a second step surface is arranged between the third hole section and the fourth hole section, and the fourth hole section is opposite to the second hole section of the first nut;
the conduction group extends into the first connection channel and the second connection channel which are opposite, two ends of the conduction group are respectively provided with a stop part, a communication part is connected between the two stop parts, the conduction group is provided with a through hole, the through hole penetrates through the stop parts and the communication parts, one of the stop parts is positioned in the first hole section and abuts against the first step surface, the other stop part is positioned in the third hole section and abuts against the second step surface, and the communication part penetrates through the second hole section and the fourth hole section.
2. The double-nut cooled ball screw of claim 1, further comprising a plurality of sealing elements disposed in said communication portion and respectively disposed between one of said stop portions and said first step surface and between the other of said stop portions and said second step surface.
3. The double-nut cooled ball screw of claim 1 wherein said first cooling passage set further has a first cooling passage in communication with said first connecting passage, said second cooling passage set further has a second cooling passage in communication with said second connecting passage.
4. The double-nut cooled ball screw of claim 3, wherein said first nut includes a head end portion, a first connection end portion opposite said head end portion, said second bore segment extends through an end face of said first connection end portion, said inlet and outlet ports are formed in said head end portion, said second nut includes a second connection end portion opposite said first connection end portion, a tail end portion opposite said second connection end portion, and said fourth bore segment extends through an end face of said second connection end portion.
5. The double-nut cooled ball screw according to claim 4, wherein said first connecting passages and said second connecting passages are two in number, said input port is connected to one end of one of said first connecting passages at said head end portion, the other end of said first connecting passage is communicated with one of said second connecting passages, one end of the other of said first connecting passages is communicated with the other of said second connecting passages, the other end of the other of said first connecting passages is communicated with said first cooling passage, and said output port is connected to one end of said first cooling passage at said head end portion.
6. The double-nut cooled ball screw according to claim 1, wherein the conducting set has a first engaging fitting and a second engaging fitting, the first engaging fitting is a hollow tube, the first engaging fitting has a first tube, the first engaging fitting has an inner wall surface facing the first tube, the inner wall surface has internal screw threads, the second engaging fitting is a hollow member, the second engaging fitting has a second tube, the second engaging fitting has a head portion and a body portion connected, the head portion is a stopper portion of the conducting set, the second tube penetrates the head portion and the body portion, the body portion has an outer wall surface facing away from the second tube, the outer wall surface has external screw threads, the second engaging fittings are inserted at both ends of the first engaging fitting, the body portions of the second fittings are oppositely inserted in the first tube to form the engaging portion, the inner screw threads are screwed with the outer screw threads, so that the first pipeline is communicated with the second pipeline to form the through hole.
7. A double-nut cooled ball screw comprising:
a screw;
the first nut is screwed on the screw rod through a plurality of first balls and comprises a first cooling channel group formed inside the first nut, the first cooling channel group is provided with a first connecting channel, the first connecting channel is provided with a first hole section and a second hole section which are connected, and the first nut is provided with an input port and an output port which are communicated with the first cooling channel group;
a second nut screwed to the screw by a plurality of second balls and including a second cooling channel group formed inside the second nut, the second cooling channel group having a second connection channel, the second connection channel having a third hole section and a fourth hole section connected thereto, the fourth hole section being opposite to the second hole section of the first nut;
the conducting piece extends into the first connecting channel and the second connecting channel which are opposite, a stopping part is arranged at one end of the conducting piece, the stopping part is connected with the communicating part, the conducting piece is provided with a through hole, and the through hole penetrates through the stopping part and the communicating part; and
the aperture of the first hole section is larger than that of the second hole section, a step surface is arranged between the first hole section and the second hole section, the stopping part is located in the first hole section and abuts against the step surface, and the communicating part penetrates through the second hole section and is combined with the fourth hole section.
8. The double-nut cooled ball screw according to claim 7, wherein the communication portion has a first thread on an outer peripheral surface thereof, and a second thread on a hole wall around the fourth hole section, and the first thread is screwed with the second thread.
9. A double-nut cooled ball screw comprising:
a screw;
the first nut is screwed on the screw rod through a plurality of first balls and comprises a first cooling channel group formed inside the first nut, the first cooling channel group is provided with a first connecting channel, the first connecting channel is provided with a first hole section and a second hole section which are connected, and the first nut is provided with an input port and an output port which are communicated with the first cooling channel group;
a second nut screwed to the screw by a plurality of second balls and including a second cooling channel group formed inside the second nut, the second cooling channel group having a second connection channel, the second connection channel having a third hole section and a fourth hole section connected thereto, the fourth hole section being opposite to the second hole section of the first nut;
the conducting piece extends into the first connecting channel and the second connecting channel which are opposite, one end of the conducting piece is provided with a stopping part, the stopping part is connected with the communicating part, the conducting piece is provided with a through hole, and the through hole penetrates through the stopping part and the communicating part;
the aperture of the third hole section is larger than that of the fourth hole section, a step surface is arranged between the third hole section and the fourth hole section, the stopping part is located on the third hole section and abuts against the step surface, and the communicating part penetrates through the fourth hole section and is combined with the second hole section.
10. The double-nut cooled ball screw according to claim 9, wherein the communication portion has a first thread on an outer peripheral surface thereof, and a second thread on a hole wall around the second hole section, and the first thread is screwed with the second thread.
CN202023179086.9U 2020-12-25 2020-12-25 Double-nut cooling type ball screw Active CN215171959U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023179086.9U CN215171959U (en) 2020-12-25 2020-12-25 Double-nut cooling type ball screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023179086.9U CN215171959U (en) 2020-12-25 2020-12-25 Double-nut cooling type ball screw

Publications (1)

Publication Number Publication Date
CN215171959U true CN215171959U (en) 2021-12-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023179086.9U Active CN215171959U (en) 2020-12-25 2020-12-25 Double-nut cooling type ball screw

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Country Link
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