CN202479820U - Auxiliary supporting device for ball screw rod - Google Patents
Auxiliary supporting device for ball screw rod Download PDFInfo
- Publication number
- CN202479820U CN202479820U CN2012200222408U CN201220022240U CN202479820U CN 202479820 U CN202479820 U CN 202479820U CN 2012200222408 U CN2012200222408 U CN 2012200222408U CN 201220022240 U CN201220022240 U CN 201220022240U CN 202479820 U CN202479820 U CN 202479820U
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- screw
- ball
- screw rod
- support housing
- support apparatus
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Abstract
The utility model discloses an auxiliary supporting device for a ball screw rod. The auxiliary supporting device is arranged between a fixed part and a movable part of mechanical equipment, wherein the relative motion between the fixed part and the movable part is realized through a horizontal screw rod device. The auxiliary supporting device comprises a support housing with a cavity at the middle and located right under the screw rod, wherein the support housing is arranged on the fixed part in a manner of moving up and down in relation to the screw rod in the vertical direction; an elastic supporting mechanism is arranged in the support housing; bumps are arranged on two sides of a screw rod nut; the lowest point of the bump is lower than the lowest point of the screw rod nut; pressing pieces are arranged at the upper end of the elastic supporting mechanism in positions in relation to the bumps; and when the pressing pieces are contacted with the lowest points of the bumps, the highest point of the elastic supporting mechanism is lower than the lowest point of the screw rod nut. The auxiliary supporting device for the ball screw rod is capable of eliminating bending deformation of a long screw rod caused by drooping due to dead-weight, small in occupied space without influencing the layout of a machine tool, and further convenient for mounting.
Description
Technical field
The utility model relates to the machine tool lead screw technical field, especially a kind of ball-screw auxiliary support apparatus.
Background technology
The extensive use feed screw apparatus drives the motion of each feed shaft in the machine tool, and feed screw apparatus is generally by being fixedly set in leading screw on the fixture, being fixedly set in the nut that is connected with threads of lead screw on the movable part and connecting and drive the motor that leading screw rotates and form.Feed screw apparatus for horizontal arrangement; Horizontal screw lead is sagging easily under the effect of gravity, and particularly horizontal screw lead receives radial load and gravity effect in the high speed rotary course; As easy as rolling off a log rocking and sagging distortion; The sagging 1mm of leading screw meeting that general 4000m is long, so sagging distortion will inevitably influence the positioning accuracy of feed motion, causes defectives such as reduction of plant equipment machining accuracy and product rejection rate height.
In order to address the above problem; Easy method the most directly perceived is to adopt the diameter that increases horizontal screw lead to strengthen the rigidity of leading screw; Reducing the deformation of leading screw, but the feed screw apparatus overall volume is increased, thereby the machine tool volume weight is increased; Cost up does not but fundamentally solve the error that sagging distortion causes.The existing sagging location arrangements supporting construction of maximum possible that extensively is employed in reduces the maximum sagging deformation of leading screw.Because the maximum sagging deformation of leading screw position is usually located in the middle of the leading screw; Belong within the impulse stroke scope, in this scope, feed screw nut must pass through; And the feed screw nut diameter is much larger than the leading screw diameter; Can't normally cross the leading screw intermediate support assembly,, three types of processing methods arranged generally to this problem:
1, adopt the mechanical electronic hydraulic control technology, when feed screw nut moved to the supplemental support position, rams retracted was supported in control, discloses a kind of machine tool horizontal leading screw oil lift device such as Chinese patent CN 101462233A; Adopt supported mechanism to support in the leading screw bottom, the top has the roller of jacking leading screw, and supported mechanism receives the magnetic valve signal controlling, when the nut convergence of workbench; Signal to magnetic valve, supported mechanism breaks away from leading screw and descends, after nut passes through; Signal to magnetic valve, leading screw is lived in the jacking again of rising of supported mechanism, and these class methods adopt electrification control technology; Break down when malfunctioning in electrification control, supporting mechanism can not normally be dodged nut and passed through, and causes the collision of nut and supporting mechanism easily; Cause economic loss to the user, and the control systematic comparison is complicated, cost is than higher;
2, adopt feed screw nut to promote the supplemental support component movement, under identical effective travel situation, the leading screw length of these class methods needs more length to reserve;
3, adopt feed screw nut directly to press down supplemental support, to dodge feed screw nut.
The utility model content
The purpose of the utility model provides a kind of ball-screw auxiliary support apparatus; Under the prerequisite that does not increase the feed screw apparatus overall volume; Can reduce the sagging deformation of deadweight of ball-screw; And dodge feed screw nut timely and effectively, guaranteeing in the whole travel range can both operate as normal, thereby has guaranteed that lathe possesses continual and steady machining accuracy in whole feed motion.
The utility model solves the technical scheme that its technical problem adopted:
A kind of ball-screw auxiliary support apparatus; Be arranged between the fixture and movable part of plant equipment; Relatively moving of said fixture and said movable part realizes through the horizontal screw lead device; Said horizontal screw lead device has and is horizontally placed on the leading screw on the fixture and is fixedly set in the feed screw nut that is connected with said threads of lead screw on the movable part, wherein, comprises that inside is a hollow cavity and is positioned at the support housing under the said leading screw; The said relatively in vertical direction leading screw of said support housing is arranged on the said fixture up or down; In said support housing, be provided with elastic bearing mechanism, in the both sides of said feed screw nut collision block be set, the minimum point of said collision block is lower than the minimum point of said feed screw nut; The position corresponding with said collision block in the upper end of said elastic bearing mechanism is provided with casting die, and the peak of said elastic bearing mechanism is lower than the minimum point of said feed screw nut when said casting die contacts with the minimum point of said collision block.
Further, said elastic bearing mechanism comprises:
Be arranged on the interior support push rod and the elastomeric element of hollow cavity of said support housing, said support push rod is screwed in the bottom of said support housing, and the upper end contacts with said holder part;
Be used to hold the holder part of said horizontal screw lead, be positioned at the upper end of said support housing and said support push rod.
Further, said casting die is to lay respectively at two of said holder part both sides to press down bearing.
Further, said holder part is two spring bearings that form symmetrical distribution with the leading screw central shaft.
Further, said elastomeric element changes stroke through the adjustment screw that is screwed in said support housing bottom.
Further, said support push rod is connected with said support housing bottom through the adjustment nut.
Further, said elastomeric element is a spring.
Further, said collision block is for falling trapezoid block, and the inclined-plane of respectively doing for oneself, the said two sides of falling the trapezoid block, said two inclined-planes are separately towards the two ends of said leading screw.
Further, be respectively equipped with the adjustment platform in the both sides, upper end of said support housing, clamping has adjusting pad in said adjustment platform.
Further, said adjusting pad is semicircle.
The advantage applies of the utility model exists:
(1) be positioned at horizontal screw lead under, eliminate on the long lead screw because the sagging deflection deformation that produces of conducting oneself with dignity;
(2) take up room for a short time, do not influence machine arrangement, the convenient installation;
(3) complete mechanical mechanism, good reliability;
(4) simple in structure, the adjustment support distances is very easy.
Description of drawings
Structural representation when Fig. 1 a is the utility model ball-screw auxiliary support apparatus support leading screw;
Fig. 1 b is the side sectional view of Fig. 1 a;
Fig. 2 a is the structural representation of the utility model ball-screw auxiliary support apparatus when receiving collision block downforce on the leading screw;
Fig. 2 b is the side sectional view of Fig. 2 a.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification of the utility model.
Leading screw and nut are the platen transmission in the utility model; Please referring to shown in Fig. 1 a and Fig. 1 b; This ball-screw auxiliary support apparatus is arranged between the fixture and movable part of plant equipment; Relatively moving of fixture and movable part realizes that through the horizontal screw lead device horizontal screw lead device has the leading screw 0 that is horizontally placed on the fixture and is fixedly set in the feed screw nut 1 that is threaded with leading screw 0 on the movable part.This ball-screw auxiliary support apparatus comprises that specifically inside is a hollow cavity and is positioned at the support housing 2 under the leading screw 0, support housing 2 in vertical direction relatively leading screw 0 be arranged on the fixture up or down.In support housing 2, be provided with elastic bearing mechanism; In the both sides of feed screw nut 1 collision block 3 is set; The minimum point of collision block 3 is lower than the minimum point of feed screw nut 1; Upper end in elastic bearing mechanism is provided with casting die 4 with collision block 3 corresponding positions, and the peak of elastic bearing mechanism is lower than the minimum point of feed screw nut 1 when casting die 4 contacts with the minimum point of collision block 3.
Elastic bearing mechanism specifically comprises: the interior support push rod 51 and elastomeric element 52 of hollow cavity that is arranged on support housing 2; And the holder part 53 that is used to hold horizontal screw lead 0; Support the bottom that push rod 51 is screwed in support housing 2; The upper end contacts with holder part 53, and holder part 53 is positioned at support housing 2 and the upper end of supporting push rod 51.Particularly, casting die 4 asks two of part 53 both sides to press down bearing for laying respectively at, and holder part 53 is two spring bearings that are symmetrically distributed with the formation of leading screw 0 central shaft, and spring bearing can be followed the rotation of leading screw 0 and rotated.Elastomeric element 52 changes stroke through the adjustment screw 6 that is screwed in support housing 2 bottoms.Particularly, elastomeric element 52 is the spring of variable compression.Supporting push rod 51 is connected with support housing 2 bottoms through adjustment nut 7.Collision block 3 is specially down trapezoid block, and the inclined-plane of respectively doing for oneself, the two sides of falling the trapezoid block, two inclined-planes are separately towards the two ends of leading screw 0.In addition, be respectively equipped with adjustment platform 21 in the both sides, upper end of support housing 2, clamping has adjusting pad 8 in adjustment platform 21, and adjusting pad 8 is semicircle, and this shape can be adjusted according to concrete actual conditions.
When this auxiliary support apparatus normal operating conditions, by two spring bearing jack-up ball-screws 0, spring bearing can be followed leading screw 0 and rotated, and support force upwards only is provided, and does not have extra resistance, does not influence the operate as normal of leading screw 0.Shown in Fig. 2 a and Fig. 2 b, when feed screw nut 1 moves to this auxiliary support apparatus position, force down gradually and press down bearing by falling the inclined-plane of trapezoid block; The spring compression; Support push rod 51 and pushed back, spring bearing and leading screw 0 break away from, at a distance of certain distance; So feed screw nut 1 is smoothly through this supplemental support, by the time this supplemental support is avoided recovering the support to leading screw 0 again behind the feed screw nut 1.
Guarantee the bevel altitude of falling the trapezoid block during design greater than the difference in height of feed screw nut 1, can make feed screw nut 1 so smoothly through this auxiliary support apparatus with leading screw 0.This device main working parts is spring bearing and presses down bearing; The stable leading screw 0 sagging deformation that has limited the placing flat of high accuracy long stroke water exactly of the spring bearing that is symmetrically distributed; Press down bearing and realized dodging the function of feed screw nut 1, outside symmetrical distribution structure makes downforce steady.In addition; Through matching the height that two semicircle adjusting pads 8 change whole support component; Can change the maximum that supports push rod 51 through rotation adjustment nut 7 and stretch out height; And the screw-in length that changes adjustment screw 6 can change the decrement of support spring, thereby changes support degree or bearing height.
To sum up, the utility model ball-screw auxiliary support apparatus can be eliminated on the long lead screw owing to the sagging deflection deformation that produces of deadweight; It is little to take up room, and does not influence machine arrangement, the convenient installation.
The above is merely the utility model preferred embodiment; Be not thus the restriction the utility model claim; So the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in the protection domain of the utility model.
Claims (10)
1. ball-screw auxiliary support apparatus; Be arranged between the fixture and movable part of plant equipment; Relatively moving of said fixture and said movable part realizes through the horizontal screw lead device; Said horizontal screw lead device has and is horizontally placed on the leading screw on the fixture and is fixedly set in the feed screw nut that is connected with said threads of lead screw on the movable part, it is characterized in that, comprises that inside is a hollow cavity and is positioned at the support housing under the said leading screw; The said relatively in vertical direction leading screw of said support housing is arranged on the said fixture up or down; In said support housing, be provided with elastic bearing mechanism, in the both sides of said feed screw nut collision block be set, the minimum point of said collision block is lower than the minimum point of said feed screw nut; The position corresponding with said collision block in the upper end of said elastic bearing mechanism is provided with casting die, and the peak of said elastic bearing mechanism is lower than the minimum point of said feed screw nut when said casting die contacts with the minimum point of said collision block.
2. ball-screw auxiliary support apparatus as claimed in claim 1 is characterized in that, said elastic bearing mechanism comprises:
Be arranged on the interior support push rod and the elastomeric element of hollow cavity of said support housing, said support push rod is screwed in the bottom of said support housing, and the upper end contacts with said holder part;
Be used to hold the holder part of said horizontal screw lead, be positioned at the upper end of said support housing and said support push rod.
3. ball-screw auxiliary support apparatus as claimed in claim 2 is characterized in that, said casting die is to lay respectively at two of said holder part both sides to press down bearing.
4. like claim 2 or 3 described ball-screw auxiliary support apparatus, it is characterized in that said holder part is two spring bearings that form symmetrical distribution with the leading screw central shaft.
5. ball-screw auxiliary support apparatus as claimed in claim 2 is characterized in that, said elastomeric element changes stroke through the adjustment screw that is screwed in said support housing bottom.
6. ball-screw auxiliary support apparatus as claimed in claim 2 is characterized in that, said support push rod is connected with said support housing bottom through the adjustment nut.
7. like claim 2 or 5 described ball-screw auxiliary support apparatus, it is characterized in that said elastomeric element is a spring.
8. ball-screw auxiliary support apparatus as claimed in claim 2 is characterized in that, said collision block is for falling trapezoid block, and the inclined-plane of respectively doing for oneself, the said two sides of falling the trapezoid block, said two inclined-planes are separately towards the two ends of said leading screw.
9. ball-screw auxiliary support apparatus as claimed in claim 2 is characterized in that, is respectively equipped with the adjustment platform in the both sides, upper end of said support housing, and clamping has adjusting pad in said adjustment platform.
10. ball-screw auxiliary support apparatus as claimed in claim 9 is characterized in that, said adjusting pad is semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200222408U CN202479820U (en) | 2012-01-18 | 2012-01-18 | Auxiliary supporting device for ball screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200222408U CN202479820U (en) | 2012-01-18 | 2012-01-18 | Auxiliary supporting device for ball screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202479820U true CN202479820U (en) | 2012-10-10 |
Family
ID=46954280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200222408U Expired - Fee Related CN202479820U (en) | 2012-01-18 | 2012-01-18 | Auxiliary supporting device for ball screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202479820U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975938A (en) * | 2017-05-24 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Without impact ballscrew auxiliary supporting device |
| CN108627098A (en) * | 2018-06-21 | 2018-10-09 | 南京理工大学 | A kind of ball screw assembly, journey error measuring device with compensation device |
| CN110064685A (en) * | 2019-04-09 | 2019-07-30 | 山东中硕机械装备制造有限公司 | The supporter of restructural mechanism squeezer with buffer function |
| CN110774039A (en) * | 2019-09-17 | 2020-02-11 | 浙江合奥机械科技有限公司 | Support arrangement based on lathe lead screw |
| CN115256010A (en) * | 2022-08-23 | 2022-11-01 | 东莞市威峰智能科技有限公司 | Screw rod auxiliary supporting mechanism |
| CN117644420A (en) * | 2024-01-30 | 2024-03-05 | 江苏泰基尔智能科技有限公司 | But angle regulation's accurate slip table structure |
-
2012
- 2012-01-18 CN CN2012200222408U patent/CN202479820U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975938A (en) * | 2017-05-24 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Without impact ballscrew auxiliary supporting device |
| CN108627098A (en) * | 2018-06-21 | 2018-10-09 | 南京理工大学 | A kind of ball screw assembly, journey error measuring device with compensation device |
| CN108627098B (en) * | 2018-06-21 | 2024-03-19 | 南京理工大学 | Ball screw pair stroke error measuring device with compensation device |
| CN110064685A (en) * | 2019-04-09 | 2019-07-30 | 山东中硕机械装备制造有限公司 | The supporter of restructural mechanism squeezer with buffer function |
| CN110064685B (en) * | 2019-04-09 | 2024-04-30 | 山东中硕机械装备制造有限公司 | Support body of reconfigurable mechanism plate bending machine with buffer function |
| CN110774039A (en) * | 2019-09-17 | 2020-02-11 | 浙江合奥机械科技有限公司 | Support arrangement based on lathe lead screw |
| CN115256010A (en) * | 2022-08-23 | 2022-11-01 | 东莞市威峰智能科技有限公司 | Screw rod auxiliary supporting mechanism |
| CN117644420A (en) * | 2024-01-30 | 2024-03-05 | 江苏泰基尔智能科技有限公司 | But angle regulation's accurate slip table structure |
| CN117644420B (en) * | 2024-01-30 | 2024-04-09 | 江苏泰基尔智能科技有限公司 | But angle regulation's accurate slip table structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20140118 |