CN110814833A - Screw rod pre-stretching mechanism for numerical control machine tool - Google Patents
Screw rod pre-stretching mechanism for numerical control machine tool Download PDFInfo
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- CN110814833A CN110814833A CN201911129037.3A CN201911129037A CN110814833A CN 110814833 A CN110814833 A CN 110814833A CN 201911129037 A CN201911129037 A CN 201911129037A CN 110814833 A CN110814833 A CN 110814833A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
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- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a screw rod pre-stretching mechanism for a numerical control machine tool, which comprises a motor base, a screw rod and a bearing seat, wherein the motor base is provided with a motor shaft; according to the invention, two ends of the periphery of the screw rod are respectively connected and positioned with the motor base and the bearing seat through the motor base cover, the motor base bushing, the first bearing, the second bearing, the first bearing base bushing, the second bearing base bushing, the third bearing and the fourth bearing through the first fixing nut, the second fixing nut and the third fixing nut, so that the pre-stretching effect of the screw rod can be better realized when the pre-stretching is carried out on the screw rod, the stability of the screw rod in the operation can be ensured, the precision of a processed workpiece can be effectively ensured, meanwhile, the service life of the existing bearing can be prolonged, the service life of the screw rod is also ensured, a large amount of mass production cost is greatly reduced, the production efficiency is effectively improved, and a more reasonable screw rod pre-stretching structure is further realized to make up for the defects in the prior art.
Description
Technical Field
The invention relates to the technical field of pre-stretching mechanisms, in particular to a screw rod pre-stretching mechanism for a numerical control machine tool.
Background
The ball screw is the most commonly used transmission element on the tool machinery and precision machinery, its main function is to convert the rotary motion into linear motion, or convert the torque into the axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency, because of the very small frictional resistance, the ball screw is widely used in various industrial equipments and precision instruments, the numerical control machine is a short name of the numerical control machine, it is an automatic machine equipped with a program control system, the control system can logically process the program with control code or other symbol instruction, and decode it, and express it with coded number, input it into the numerical control device through the information carrier, the numerical control device sends out various control signals through the operation process, controls the action of the machine, according to the shape and size required by the drawing, automatically processes the parts, the prestretching structure of the screw rod is used for the numerical control machine in the processing operation, the precision of the processed workpiece plays a crucial role, and the pretensioning mechanism for the screw rod in the prior art has certain defects in practical application, such as:
the screw rod pre-stretching structure is adopted in the prior art, so that the pre-stretching amount can be used for offsetting the thermal expansion amount, and the processing precision is guaranteed.
Disclosure of Invention
The invention aims to provide a screw rod pre-stretching mechanism for a numerical control machine tool, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lead screw prestretching mechanism for digit control machine tool, includes motor cabinet, lead screw and bearing frame, there is the motor seat lid motor cabinet middle part one side through bolt fixedly connected with, the inside lead screw that pegs graft of motor cabinet lid, the peripheral one end of lead screw runs through motor cabinet lid threaded connection and has first fixation nut, there is the bearing cabinet lid bearing frame upper surface middle part one side through bolt fixedly connected with, inside the bearing cabinet lid with the lead screw pegs graft, the peripheral other end of lead screw runs through bearing cabinet lid threaded connection and has the third fixation nut, screw thread has been seted up to peripheral one side of lead screw, and the screw thread with the lead screw periphery is the syntropy.
Preferably, the motor base cover further comprises a motor base lining, the inner wall of the motor base cover is fixedly connected with the motor base lining through a clamping piece and a bolt, and the inside of the motor base lining is sleeved with the screw rod.
Preferably, the motor cabinet still includes first bearing, motor cabinet upper surface middle part one side is close to the edge and passes through fastener and the first bearing of bolt fixedly connected with, first bearing inner wall with the lead screw cup joints, first bearing is used for as the positioning mechanism of lead screw on the motor cabinet.
Preferably, the motor cabinet further comprises a second bearing, the upper surface of the motor cabinet on one side of the first bearing is fixedly connected with the second bearing through a bolt and a clamping piece, the inner wall of the second bearing is sleeved with the screw rod, and the second bearing is used as a limiting mechanism of the screw rod on the motor cabinet.
Preferably, the bearing seat further comprises a second fixing nut, the second fixing nut is sleeved on the peripheral thread of the screw rod on one side of the bearing seat, and the second fixing nut is used as a positioning mechanism of the screw rod in the bearing seat.
Preferably, the bearing seat further comprises a first bearing seat lining, one side of the middle part of the upper surface of the bearing seat is fixedly connected with the first bearing seat lining through a bolt and a clamping piece, and the inner wall of the first bearing seat lining is sleeved with the screw rod.
Preferably, the bearing frame still includes the third bearing, bearing frame upper surface middle part opposite side is through bolt and fastener fixedly connected with third bearing, the third bearing inner wall with the lead screw cup joints, the third bearing is used for as the positioning mechanism of lead screw on the bearing frame.
Preferably, the bearing frame still includes the fourth bearing, third bearing one side the bearing frame upper surface is through bolt and fastener fixedly connected with fourth bearing, the fourth bearing with the lead screw cup joints, the fourth bearing is used for being as the stop gear of lead screw on the bearing frame.
Preferably, the bearing seat further comprises a second bearing seat bushing, the edge of one side of the middle part of the upper surface of the bearing seat is fixedly connected with the second bearing seat bushing through a bolt, and the inner wall of the second bearing seat bushing is sleeved with the screw rod.
Preferably, all through bolt fixedly connected with connecting piece on one side of motor cabinet and bearing frame upper surface, and stretch the bolster through fastener fixedly connected with between two connecting piece one sides and motor cabinet and the bearing frame, and stretch the bolster both sides middle part and all through the tensile canceling release mechanical system of bolt fixedly connected with, stretch the bolster with tensile canceling release mechanical system middle part all with lead screw threaded connection.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, two ends of the periphery of the screw rod are respectively connected and positioned with the motor base and the bearing seat through the motor base cover, the motor base bushing, the first bearing, the second bearing, the first bearing base bushing, the second bearing base bushing, the third bearing and the fourth bearing through the first fixing nut, the second fixing nut and the third fixing nut, so that the pre-stretching effect of the screw rod can be better realized when the pre-stretching is carried out on the screw rod, the stability of the screw rod in the operation can be ensured, the precision of a processed workpiece can be effectively ensured, meanwhile, the service life of the existing bearing can be prolonged, the service life of the screw rod is also ensured, a large amount of mass production cost is greatly reduced, the production efficiency is effectively improved, and a more reasonable screw rod pre-stretching structure is further realized to make up for the defects in the prior art.
Drawings
FIG. 1 is a schematic top view of a half-section of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is an enlarged schematic view of B in fig. 1.
In the figure: 1-a motor base; 2-a first fixing nut; 3-motor seat cover; 4-motor base bushing; 5-a first bearing; 6-a second bearing; 7-a screw rod; 8-a second fixing nut; 9-a first bearing block bushing; 10-a bearing seat; 11-a third bearing; 12-a fourth bearing; 13-a bearing block cover; 14-a second bearing block bushing; 15-third fixing nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a lead screw prestretching mechanism for digit control machine tool, includes motor cabinet 1, lead screw 7 and bearing frame 10, there is motor seat lid 3 on one side of motor cabinet 1 upper surface middle part through bolt fixedly connected with, can effectual implementation motor installation and location through motor lid 3, the inside lead screw 7 of pegging graft of motor seat lid 3, the peripheral one end of lead screw 7 runs through motor seat lid 3 threaded connection has first fixation nut 2, can effectual realization through first fixation nut 2 implement lead screw 7 fastening in motor cabinet 1 to inject the relative position between lead screw 7 and the motor cabinet 1, the 3 inner walls of motor seat lid pass through fastener and bolt fixedly connected with motor cabinet bush 4, motor cabinet bush 4 inside with lead screw 7 cup joints, can effectual realization through motor cabinet bush 4 to fix a position the protection between motor cabinet 1 and the lead screw 7 thereby can be very big play the effect of protection motor cabinet 1 and realize prolonging motor cabinet life's life The motor base has the advantages that a first bearing 5 is fixedly connected to one side of the middle of the upper surface of the motor base 1 close to the edge through a fastener and a bolt, the inner wall of the first bearing 5 is sleeved with the screw rod 7, the first bearing 5 is used as a positioning mechanism of the screw rod 7 on the motor base 1, a second bearing 6 is fixedly connected to the upper surface of the motor base 1 on one side of the first bearing 5 through a bolt and a fastener, the inner wall of the second bearing 6 is sleeved with the screw rod 7, the second bearing 6 is used as a limiting mechanism of the screw rod 7 on the motor base 1, the pretensioning positioning of the screw rod 7 in the motor base 1 can be effectively enhanced through the first bearing 5 and the second bearing 6, so that the screw rod 7 can obtain enough positioning effect during pretensioning to avoid the sagging of the screw rod 7 during operation, and a bearing base cover 13 is fixedly connected to one side of the middle of the upper surface, the lead screw 7 can be effectively installed and positioned through the bearing seat cover 13, the inside of the bearing seat cover 13 is inserted into the lead screw 7, the second fixing nut 8 is sleeved on the peripheral thread of the lead screw 7 on one side of the bearing seat 10, the second fixing nut 8 is used as a positioning mechanism of the lead screw 7 in the bearing seat 10, the lead screw 7 can be effectively fastened through the second fixing nut 8 to achieve limiting when the lead screw 7 is pre-stretched, so that the stretching precision is improved, the first bearing seat bush 9 is fixedly connected to one side of the middle part of the upper surface of the bearing seat 10 through a bolt and a clamping piece, the inner wall of the first bearing seat bush 9 is sleeved with the lead screw 7, the first bearing seat bush 9 can effectively play a role in protecting the joint of the bearing seat 10 and the lead screw 7, and further can further guarantee the service life of the bearing seat 10 during the use of the lifting bearing seat 10, the other side of the middle part of the upper surface of the bearing seat 10 is fixedly connected with a third bearing 11 through a bolt and a clamping piece, the inner wall of the third bearing 11 is sleeved with the screw rod 7, the third bearing 11 is used as a positioning mechanism of the screw rod 7 on the bearing seat 10, the upper surface of the bearing seat 10 at one side of the third bearing 11 is fixedly connected with a fourth bearing 12 through a bolt and a clamping piece, the fourth bearing 12 is sleeved with the screw rod 7, the fourth bearing 12 is used as a limiting mechanism of the screw rod 7 on the bearing seat 10, the prestretching positioning auxiliary effect of the screw rod 7 in the bearing seat 10 can be effectively played through the third bearing 11 and the fourth bearing 12, so that the stretching precision of the screw rod 7 can be effectively improved when prestretching is carried out, the edge of one side of the middle part of the upper surface of the bearing seat 10 is fixedly connected with a second bearing seat bush 14 through a bolt, the stability of the screw 7 during operation in the bearing seat 10 can be effectively improved through the second bearing seat bushing 14, meanwhile, the connection part of the screw 7 and the bearing seat 10 can be greatly protected to achieve the effect of prolonging the service life of the bearing seat 10, the other end of the periphery of the screw 7 penetrates through the bearing seat cover 13 and is in threaded connection with the third fixing nut 15, the effective precision improving effect of the screw 7 during implementation of pre-stretching can be further improved through the third fixing nut 15, threads are formed in one side of the periphery of the screw 7, and the threads and the periphery of the screw 7 are in the same direction, so that the peripheral strength of the screw 7 is higher.
Example two:
referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a lead screw prestretching mechanism for digit control machine tool, includes motor cabinet 1, lead screw 7 and bearing frame 10, there is motor seat lid 3 on one side of motor cabinet 1 upper surface middle part through bolt fixedly connected with, can effectual implementation motor installation and location through motor lid 3, the inside lead screw 7 of pegging graft of motor seat lid 3, the peripheral one end of lead screw 7 runs through motor seat lid 3 threaded connection has first fixation nut 2, can effectual realization through first fixation nut 2 implement lead screw 7 fastening in motor cabinet 1 to inject the relative position between lead screw 7 and the motor cabinet 1, the 3 inner walls of motor seat lid pass through fastener and bolt fixedly connected with motor cabinet bush 4, motor cabinet bush 4 inside with lead screw 7 cup joints, can effectual realization through motor cabinet bush 4 to fix a position the protection between motor cabinet 1 and the lead screw 7 thereby can be very big play the effect of protection motor cabinet 1 and realize prolonging motor cabinet life's life The motor base has the advantages that a first bearing 5 is fixedly connected to one side of the middle of the upper surface of the motor base 1 close to the edge through a fastener and a bolt, the inner wall of the first bearing 5 is sleeved with the screw rod 7, the first bearing 5 is used as a positioning mechanism of the screw rod 7 on the motor base 1, a second bearing 6 is fixedly connected to the upper surface of the motor base 1 on one side of the first bearing 5 through a bolt and a fastener, the inner wall of the second bearing 6 is sleeved with the screw rod 7, the second bearing 6 is used as a limiting mechanism of the screw rod 7 on the motor base 1, the pretensioning positioning of the screw rod 7 in the motor base 1 can be effectively enhanced through the first bearing 5 and the second bearing 6, so that the screw rod 7 can obtain enough positioning effect during pretensioning to avoid the sagging of the screw rod 7 during operation, and a bearing base cover 13 is fixedly connected to one side of the middle of the upper surface, the lead screw 7 can be effectively installed and positioned through the bearing seat cover 13, the inside of the bearing seat cover 13 is inserted into the lead screw 7, the second fixing nut 8 is sleeved on the peripheral thread of the lead screw 7 on one side of the bearing seat 10, the second fixing nut 8 is used as a positioning mechanism of the lead screw 7 in the bearing seat 10, the lead screw 7 can be effectively fastened through the second fixing nut 8 to achieve limiting when the lead screw 7 is pre-stretched, so that the stretching precision is improved, the first bearing seat bush 9 is fixedly connected to one side of the middle part of the upper surface of the bearing seat 10 through a bolt and a clamping piece, the inner wall of the first bearing seat bush 9 is sleeved with the lead screw 7, the first bearing seat bush 9 can effectively play a role in protecting the joint of the bearing seat 10 and the lead screw 7, and further can further guarantee the service life of the bearing seat 10 during the use of the lifting bearing seat 10, the other side of the middle part of the upper surface of the bearing seat 10 is fixedly connected with a third bearing 11 through a bolt and a clamping piece, the inner wall of the third bearing 11 is sleeved with the screw rod 7, the third bearing 11 is used as a positioning mechanism of the screw rod 7 on the bearing seat 10, the upper surface of the bearing seat 10 at one side of the third bearing 11 is fixedly connected with a fourth bearing 12 through a bolt and a clamping piece, the fourth bearing 12 is sleeved with the screw rod 7, the fourth bearing 12 is used as a limiting mechanism of the screw rod 7 on the bearing seat 10, the prestretching positioning auxiliary effect of the screw rod 7 in the bearing seat 10 can be effectively played through the third bearing 11 and the fourth bearing 12, so that the stretching precision of the screw rod 7 can be effectively improved when prestretching is carried out, the edge of one side of the middle part of the upper surface of the bearing seat 10 is fixedly connected with a second bearing seat bush 14 through a bolt, the stability of the screw rod 7 when the screw rod 7 runs in the bearing seat 10 can be effectively improved through the second bearing seat bushing 14, meanwhile, the connection part of the screw rod 7 and the bearing seat 10 can be greatly protected, the service life of the lifting bearing seat 10 can be achieved, the other end of the periphery of the screw rod 7 penetrates through the bearing seat cover 13 and is in threaded connection with the third fixing nut 15, the effective precision improving effect of the screw rod 7 when pre-stretching is implemented can be further improved through the third fixing nut 15, one side of the periphery of the screw rod 7 is provided with threads, the threads and the periphery of the screw rod 7 are in the same direction, so that the peripheral strength of the screw rod 7 is higher, the upper surface sides of the motor seat 1 and the bearing seat 10 are both fixedly connected with connecting pieces through bolts, the middle parts of the connecting pieces are sleeved with the periphery of the screw, the inner wall of the elongated buffer part is fixedly connected with the screw rod 7 through a positioning pin, the middle parts of two sides of the elongated buffer part are fixedly connected with the stretching reset mechanisms through bolts, and the middle parts of the elongated buffer part and the stretching reset mechanisms are in threaded connection with the screw rod 7, so that the screw rod 7 can effectively eliminate stress at stretching positions of two ends of the screw rod 7 when the pre-stretching is implemented, the stable stretching of the screw rod 7 can be realized, and a large amount of thermal expansion effect can be greatly reduced when the common pre-stretching is implemented, and the pre-stretching effect of the screw rod 7 is further.
The working principle is as follows: when in use, the two peripheral ends of the screw rod 7 pass through the first fixing nut 2, the second fixing nut 8 and the third fixing nut 15 respectively pass through the motor base cover 3 with the motor base 1 and the bearing base 10, the motor base bushing 4, the first bearing 5, the second bearing 6, the first bearing base bushing 9, the second bearing base bushing 14, the third bearing 11 and the fourth bearing 12 to be connected and positioned, so that the screw rod can better realize the pre-stretching effect of the screw rod 7 when being pre-stretched, and the stability of the screw rod 7 in operation can be ensured, so that the precision of a processed workpiece can be effectively obtained and guaranteed, meanwhile, the service life of the existing bearing can be prolonged, and the service life of the screw rod 7 is also ensured, thereby greatly reducing mass production cost and effectively improving the production efficiency.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A lead screw pretension mechanism for a numerical control machine tool, characterized by comprising:
a motor base (1);
a screw rod (7); and
a bearing seat (10);
the motor base cover (3) is fixedly connected to one side of the middle of the upper surface of the motor base (1) through bolts, a screw rod (7) is inserted into the motor base cover (3), one end of the periphery of the screw rod (7) penetrates through the motor base cover (3) and is connected with a first fixing nut (2) in a threaded mode, one side of the middle of the upper surface of the bearing base (10) is fixedly connected with a bearing base cover (13) through bolts, the interior of the bearing base cover (13) is inserted into the screw rod (7), and the other end of the periphery of the screw rod (7) penetrates through the bearing base cover (13) and is connected with a third fixing nut (15) in a;
wherein, screw thread is opened on one side of the periphery of the screw rod (7), and the screw thread and the periphery of the screw rod (7) are in the same direction.
2. The screw rod pretensioning mechanism for the numerical control machine according to claim 1, characterized in that: the motor base cover (3) further comprises:
a motor base bushing (4);
the inner wall of the motor base cover (3) is fixedly connected with a motor base bushing (4) through a clamping piece and a bolt, and the inside of the motor base bushing (4) is sleeved with the screw rod (7).
3. The screw rod pretensioning mechanism for the numerical control machine according to claim 2, characterized in that: the motor cabinet (1) further comprises:
a first bearing (5);
wherein, motor cabinet (1) upper surface middle part one side is close to the edge and passes through fastener and bolt fixedly connected with first bearing (5), first bearing (5) inner wall with lead screw (7) cup joint, first bearing (5) are used for as lead screw (7) positioning mechanism on motor cabinet (1).
4. The screw rod pretensioning mechanism for the numerical control machine according to claim 3, characterized in that: the motor cabinet (1) further comprises:
a second bearing (6);
the motor base is characterized in that the upper surface of the motor base (1) on one side of the first bearing (5) is fixedly connected with a second bearing (6) through a bolt and a clamping piece, the inner wall of the second bearing (6) is sleeved with the screw rod (7), and the second bearing (6) is used as a limiting mechanism of the screw rod (7) on the motor base (1).
5. The screw rod pretensioning mechanism for the numerical control machine according to claim 4, characterized in that: the bearing seat (10) further comprises:
a second fixing nut (8);
and a second fixing nut (8) is sleeved on the periphery of the screw rod (7) on one side of the bearing seat (10) in a threaded manner, and the second fixing nut (8) is used as a positioning mechanism of the screw rod (7) in the bearing seat (10).
6. The screw rod pretensioning mechanism for the numerical control machine according to claim 5, characterized in that: the bearing seat (10) further comprises:
a first bearing block bushing (9);
one side of the middle part of the upper surface of the bearing seat (10) is fixedly connected with a first bearing seat lining (9) through a bolt and a clamping piece, and the inner wall of the first bearing seat lining (9) is sleeved with the screw rod (7).
7. The screw rod pretensioning mechanism for the numerical control machine according to claim 6, characterized in that: the bearing seat (10) further comprises:
a third bearing (11);
the other side of the middle part of the upper surface of the bearing seat (10) is fixedly connected with a third bearing (11) through a bolt and a clamping piece, the inner wall of the third bearing (11) is sleeved with the screw rod (7), and the third bearing (11) is used as a positioning mechanism of the screw rod (7) on the bearing seat (10).
8. The screw rod pretensioning mechanism for the numerical control machine according to claim 7, characterized in that: the bearing seat (10) further comprises:
a fourth bearing (12);
the upper surface of the bearing seat (10) on one side of the third bearing (11) is fixedly connected with a fourth bearing (12) through a bolt and a clamping piece, the fourth bearing (12) is sleeved with the screw rod (7), and the fourth bearing (12) is used as a limiting mechanism of the screw rod (7) on the bearing seat (10).
9. The screw rod pretensioning mechanism for the numerical control machine according to claim 8, characterized in that: the bearing seat (10) further comprises:
a second bearing block bushing (14);
the edge of one side of the middle of the upper surface of the bearing seat (10) is fixedly connected with a second bearing seat lining (14) through a bolt, and the inner wall of the second bearing seat lining (14) is sleeved with the screw rod (7).
10. The screw rod pretensioning mechanism for the numerical control machine according to claim 1, characterized in that: motor cabinet (1) and bearing frame (10) upper surface one side all through bolt fixedly connected with connecting piece, and between two connecting pieces one side and motor cabinet (1) and bearing frame (10) through fastener fixedly connected with elongate the bolster, and elongate the bolster both sides middle part all through the tensile canceling release mechanical system of bolt fixedly connected with, elongate the bolster with tensile canceling release mechanical system middle part all with lead screw (7) threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129037.3A CN110814833A (en) | 2019-11-18 | 2019-11-18 | Screw rod pre-stretching mechanism for numerical control machine tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129037.3A CN110814833A (en) | 2019-11-18 | 2019-11-18 | Screw rod pre-stretching mechanism for numerical control machine tool |
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| CN110814833A true CN110814833A (en) | 2020-02-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643486A (en) * | 2022-04-19 | 2022-06-21 | 广州佳盟子机床有限公司 | Numerical control machine tool spindle tool changing device |
| CN114643486B (en) * | 2022-04-19 | 2023-02-21 | 广州佳盟子机床有限公司 | Numerical control machine tool spindle tool changing device |
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Application publication date: 20200221 |