CN209335216U - A kind of lead screw gap adjusting mechanism - Google Patents
A kind of lead screw gap adjusting mechanism Download PDFInfo
- Publication number
- CN209335216U CN209335216U CN201920008950.7U CN201920008950U CN209335216U CN 209335216 U CN209335216 U CN 209335216U CN 201920008950 U CN201920008950 U CN 201920008950U CN 209335216 U CN209335216 U CN 209335216U
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- China
- Prior art keywords
- screw
- plummer
- turn
- lead screw
- bearing
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Abstract
The utility model is suitable for machining technical field of auxiliary equipment, provides a kind of lead screw gap adjusting mechanism, the lead-screw drive mechanism including plummer and on the plummer；The lead-screw drive mechanism includes turn-screw, feed screw nut and guiding feed rod；Described turn-screw one end connects the plummer by bearing block, and the other end is connected with servo motor by gearbox, and the bearing block is embedded with bearing；The bearing block lower end connects the plummer with fastening nut by sliding groove, and the plummer rear end is equipped with clearance adjustment mechanism；The clearance adjustment mechanism includes hydraulic cylinder, and hingedly the bearing block, lower end are fixedly connected with the plummer for the hydraulic cylinder front end.Whereby, by the way that clearance adjustment mechanism is arranged in bearing base rear end, the gap that adjustment turn-screw is generated by abrasion achievees the purpose that reduce mismachining tolerance the utility model.
Description
Technical field
The utility model relates to be machined technical field of auxiliary equipment more particularly to a kind of lead screw gap adjusting mechanism
Background technique
During using mechanical equipment processing part, it is often necessary to turn-screw, such as the feed of lathe are used, into
Straight reciprocating motion is done to lead screw band cutter.By taking vertical drilling milling machine as an example, part drilling and milling machine is during processing part, cutter
Perpendicular to machining table top, and in motor by driving lead screw rotation, and then processing table top movement is driven, is realized pair with this
Processing is cut in washing for workpiece.Work top quality is larger, can generate certain abrasion, lead screw both ends to lead screw both ends after prolonged exercise
After abrasion, identical feeding length, to processing can generate large error, be not easy to be machined and use, and lead screw plus
Work higher cost, replacement are extremely inconvenient.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Utility model content
For above-mentioned defect, the purpose of this utility model is to provide a kind of lead screw gap adjusting mechanisms, can lead to
It crosses and clearance adjustment mechanism is set in bearing base rear end, the gap that adjustment turn-screw is generated by abrasion reaches reduction mismachining tolerance
Purpose.
To achieve the goals above, the utility model provides a kind of lead screw gap adjusting mechanism, including plummer and is located at
Lead-screw drive mechanism on the plummer；The lead-screw drive mechanism includes turn-screw, feed screw nut and guiding feed rod；Institute
It states turn-screw one end and the plummer is connected by bearing block, the other end is connected with servo motor, the axis by gearbox
It holds seat and is embedded with bearing；The bearing block lower end connects the plummer, and the plummer with fastening nut by sliding groove
Rear end is equipped with clearance adjustment mechanism；The clearance adjustment mechanism includes hydraulic cylinder, the hinged bearing block in the hydraulic cylinder front end,
Lower end is fixedly connected with the plummer.
Lead screw gap adjusting mechanism according to the present utility model is additionally provided with unidirectional between the bearing block and the hydraulic cylinder
Position-limit mechanism, the unidirectional position-limit mechanism include limited block and several blocks, and the limited block is fixedly connected with the bearing block
One right-angle side of rear end, the rectangular triangle of limited block, and the triangle abuts the limited block.
Lead screw gap adjusting mechanism according to the present utility model, the block lower end connect institute by several reset springs
State plummer.
The quantity of lead screw gap adjusting mechanism according to the present utility model, the guiding feed rod is two, is located at institute
The left and right ends of turn-screw are stated, two guiding feed rod height are identical, and being equidistant apart from the turn-screw.
Lead screw gap adjusting mechanism according to the present utility model is equipped with certainly between the feed screw nut and the guiding feed rod
Lube plate.
Lead screw gap adjusting mechanism according to the present utility model, be additionally provided in the clearance adjustment mechanism pressure sensor and
The relief valve controlled by the pressure sensor.
Lead screw gap adjusting mechanism according to the present utility model, the turn-screw are ball-screw, the turn-screw
Seal Oil lubricant grease in the axle end bearing at both ends.
The utility model provides a kind of lead screw gap adjusting mechanism, the lead screw including plummer and on the plummer
Transmission mechanism, plummer are used to support workpiece, and general plummer is equipped with work piece holder, such as vice, lead-screw drive mechanism exist
Under the action of motor, plummer movement is driven, the processing to workpiece is realized with this.The lead-screw drive mechanism includes driving wire
Thick stick, feed screw nut and guiding feed rod；Described turn-screw one end connects the plummer by bearing block, and the other end passes through speed change
Case is connected with servo motor, and the bearing block is embedded with bearing, and bearing is standard component, according to mechanical design handbook, searches and merges
The bearing for buying needs realizes the movement of turn-screw using bearing and bearing block, and the output end of motor is adjusted by gearbox
Afterwards, revolving speed is more steady, and feed screw nut is driven to move, and turn-screw deforms in order to prevent, generally sets in turn-screw side
Several guiding feed rods are set, it is convenient that plummer is supported.The bearing block lower end is connected by sliding groove with fastening nut
The plummer, and the plummer rear end is equipped with clearance adjustment mechanism, turn-screw is in use for some time, it may occur that mill
Damage, at this point, adjusting the position of bearing block, and be fixed using fastening nut using the sliding groove and fastening nut of lower end.Institute
Stating clearance adjustment mechanism includes hydraulic cylinder, and hingedly the bearing block, lower end are fixedly connected with the plummer for the hydraulic cylinder front end,
Plummer quality is larger, more can easily change the position of bearing block using hydraulic cylinder, facilitate reduction kinematic error.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the partial structure diagram of the utility model；
Fig. 3 is the side structure reference view of the utility model；
1- plummer in the figure, 1a- sliding groove, 2- lead-screw drive mechanism, 2a- servo motor, 2b- gearbox, 2c- are passed
Dynamic lead screw, 2d- feed screw nut, 2e- bearing block, 2e1- bearing, 2f- are oriented to feed rod, 3- hydraulic cylinder, the unidirectional position-limit mechanism of 4-, 4a-
Limited block, 4b- block, 4c- reset spring.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail, it should be understood that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to figures 1-3, the utility model provides a kind of lead screw gap adjusting mechanism, including plummer 1 and is located at described
Lead-screw drive mechanism 2 on plummer 1, plummer 1 are used to support workpiece, and general plummer 1 is equipped with work piece holder, such as vice
Deng, lead-screw drive mechanism 2 under the action of motor, drives plummer 1 to move, the processing to workpiece is realized with this.The silk
Thick stick transmission mechanism 2 includes turn-screw 2c, feed screw nut 2d and guiding feed rod 2f；The one end the turn-screw 2c passes through bearing block
The 2e connection plummer 1, the other end are connected with servo motor 2a by gearbox 2b, and the bearing block 2e is embedded with bearing
2e1, bearing 2e1 are that standard component is searched and bought the bearing 2e1 of needs according to mechanical design handbook, utilize bearing 2e1 and axis
A 2e is held, after realizing that the movement of turn-screw 2c, the output end of motor are adjusted by gearbox 2b, revolving speed is more steady, drives
Feed screw nut 2d movement, in order to prevent turn-screw 2c deform, generally the side turn-screw 2c be arranged several guiding light
Thick stick 2f is convenient to be supported to plummer 1.The lower end the bearing block 2e connects the carrying with fastening nut by sliding groove 1a
Platform 1, and 1 rear end of the plummer is equipped with clearance adjustment mechanism, turn-screw 2c is in use for some time, it may occur that abrasion,
At this point, adjusting the position of bearing block 2e using the sliding groove 1a and fastening nut of lower end, and it is fixed using fastening nut.
The clearance adjustment mechanism includes hydraulic cylinder 3, and hingedly the bearing block 2e, lower end are fixedly connected described for 3 front end of hydraulic cylinder
Plummer 1,1 mass of plummer is larger, more can easily change the position of bearing block 2e using hydraulic cylinder 3, facilitate reduction
Kinematic error.
Preferably, unidirectional position-limit mechanism 4, institute are additionally provided between the bearing block 2e and the hydraulic cylinder 3 of the utility model
Stating unidirectional position-limit mechanism 4 includes limited block 4a and several blocks 4b, after the limited block 4a is fixedly connected with the bearing block 2e
One right-angle side of end, the rectangular triangle of limited block 4a, and the triangle abuts the limited block 4a, gap adjustment
After the completion, it can use unidirectional position-limit mechanism 4 bearing block 2e is fixed, prevent bearing block 2e mobile, can remove at this time
Hydraulic cylinder 3 reduces the unnecessary wasting of resources.Referring to Fig. 3, in the actual production process, the degree of wear is generally in 3-5mm or so
Error, therefore the volume of block 4b should not be too large (block 4b volume is larger in Fig. 3, be intended merely to more intuitive), and can only
Folk prescription is pressed downward.
In addition, the lower end block 4b of the utility model passes through several reset springs 4c connection plummer 1, block 4b
By it is downward when, end face is remained basically stable with plummer 1, and bearing block 2e is facilitated to slide, and after the completion of gap adjustment, reset spring 4c is driven
Block 4b Rapid reset, the one end bearing block 2e is stopped by block 4b and limited block 4a at this time, and the other end is transmitted lead screw 2c limit,
The play of the 2c of turn-screw can be prevented at this time.
Further, the quantity of the guiding feed rod 2f of the utility model is two, is located at the turn-screw 2c's
Left and right ends, two guiding feed rod 2f height are identical, and being equidistant apart from the turn-screw 2c, facilitate carrying identical negative
It carries, 1 mass of plummer is larger, can preferably be supported to plummer 1 using guiding feed rod 2f, prevent turn-screw 2c from becoming
Shape improves service life.
Preferably, self-lubricating plate is equipped between the feed screw nut 2d of the utility model and the guiding feed rod 2f, in order to subtract
Small friction can effectively reduce frictional force using self-lubricating guide plate, prevent " creeping " phenomenon.
In order to reach preferable technical effect, pressure sensor is additionally provided in the clearance adjustment mechanism of the utility model and lead to
The relief valve of the pressure sensor control is crossed, hydraulic cylinder 3 can export greatly top power, and gap tension is to bearing in order to prevent
2e1 or turn-screw 2c are damaged, and necessary pressure detecting are carried out using pressure sensor, when pressure output is more than a fixed number
When value, pressure release valve events, to prevent the damage of components.Meanwhile pressure tension, servo motor 2a will also result in unnecessary
Load, is easy to burn servo motor 2a.
In the actual production process, the turn-screw 2c of the utility model is ball-screw, the both ends the turn-screw 2c
Axle end bearing 2e1 in Seal Oil lubricant grease, ball-screw-transmission is steady, and the force of rolling friction of generation can be smaller, facilitates band
Dynamic plummer 1 moves.
Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence
In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these according to the utility model
Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.
Claims (7)
1. a kind of lead screw gap adjusting mechanism, which is characterized in that the lead screw transmission including plummer and on the plummer
Mechanism；The lead-screw drive mechanism includes turn-screw, feed screw nut and guiding feed rod；
Described turn-screw one end connects the plummer by bearing block, and the other end is connected with servo motor by gearbox,
The bearing block is embedded with bearing；
The bearing block lower end connects the plummer with fastening nut by sliding groove, and the plummer rear end is equipped with gap
Adjustment mechanism；
The clearance adjustment mechanism includes hydraulic cylinder, and hingedly the bearing block, lower end are fixedly connected described for the hydraulic cylinder front end
Plummer.
2. lead screw gap adjusting mechanism according to claim 1, which is characterized in that the bearing block and the hydraulic cylinder it
Between be additionally provided with unidirectional position-limit mechanism, the unidirectional position-limit mechanism includes limited block and several blocks, and the limited block is fixed to be connected
A right-angle side for connecing the bearing base rear end, the rectangular triangle of limited block, and the triangle abuts the limit
Block.
3. lead screw gap adjusting mechanism according to claim 2, which is characterized in that the block lower end is multiple by several
Position spring connects the plummer.
4. lead screw gap adjusting mechanism according to claim 1, which is characterized in that the quantity of the guiding feed rod is two
It is a, be located at the left and right ends of the turn-screw, two guiding feed rods height are identical, and apart from the turn-screw away from
From equal.
5. lead screw gap adjusting mechanism according to claim 4, which is characterized in that the feed screw nut and the guiding light
Self-lubricating plate is equipped between thick stick.
6. lead screw gap adjusting mechanism according to claim 1, which is characterized in that be additionally provided in the clearance adjustment mechanism
Pressure sensor and the relief valve controlled by the pressure sensor.
7. lead screw gap adjusting mechanism according to claim 1, which is characterized in that the turn-screw is ball-screw,
Seal Oil lubricant grease in the axle end bearing at the turn-screw both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920008950.7U CN209335216U (en) | 2019-01-04 | 2019-01-04 | A kind of lead screw gap adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920008950.7U CN209335216U (en) | 2019-01-04 | 2019-01-04 | A kind of lead screw gap adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209335216U true CN209335216U (en) | 2019-09-03 |
Family
ID=67760796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920008950.7U Expired - Fee Related CN209335216U (en) | 2019-01-04 | 2019-01-04 | A kind of lead screw gap adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209335216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157626A (en) * | 2020-01-02 | 2020-05-15 | 西安交通大学 | Clamping system for quantitatively adjusting fitting pressure of ultrasonic phased array probe |
| CN114147305A (en) * | 2020-09-07 | 2022-03-08 | 富准精密模具(嘉善)有限公司 | Part positioning device |
-
2019
- 2019-01-04 CN CN201920008950.7U patent/CN209335216U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157626A (en) * | 2020-01-02 | 2020-05-15 | 西安交通大学 | Clamping system for quantitatively adjusting fitting pressure of ultrasonic phased array probe |
| CN111157626B (en) * | 2020-01-02 | 2021-05-28 | 西安交通大学 | Clamping system for quantitatively adjusting fitting pressure of ultrasonic phased array probe |
| CN114147305A (en) * | 2020-09-07 | 2022-03-08 | 富准精密模具(嘉善)有限公司 | Part positioning device |
| CN114147305B (en) * | 2020-09-07 | 2023-07-21 | 富准精密模具(嘉善)有限公司 | Part positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 Termination date: 20220104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |