CN106475834A - A kind of method of lead screw shaft bearings centering - Google Patents

A kind of method of lead screw shaft bearings centering Download PDF

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Publication number
CN106475834A
CN106475834A CN201510535090.9A CN201510535090A CN106475834A CN 106475834 A CN106475834 A CN 106475834A CN 201510535090 A CN201510535090 A CN 201510535090A CN 106475834 A CN106475834 A CN 106475834A
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CN
China
Prior art keywords
indicator
shaft bearings
lead screw
screw shaft
leading screw
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Granted
Application number
CN201510535090.9A
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Chinese (zh)
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CN106475834B (en
Inventor
张伟伟
王玉成
张云
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Chengdu Aircraft Industrial Group Co Ltd
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Chengdu Aircraft Industrial Group Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means

Abstract

The present invention discloses a kind of method of lead screw shaft bearings centering, and by laying indicator bracket at nut seat on the table, starting lathe makes workbench, indicator reading on nut seat for the record;According to record adjustment:Indicator bracket is adsorbed on lathe bed, dial gauge indicator contacts nut seat to be adjusted or screw seating face;The trip bolt at position to be adjusted is got loose, makes it produce displacement using jack or crowbar;Offset distance and prior measurements are made when identical, then to fasten the trip bolt at this position;The adjustment of vertical direction:According to early stage measurement result, unclamp the trip bolt at position to be adjusted, be added to below with pad and fasten;Start lathe check.Early-stage preparations instrument of the present invention is few it is only necessary to the common dial gauge of preparation and dial framework can be detected;Spacing no requirement (NR) to guide rail and leading screw;Affected less by leading screw degree of disturbing, the state during detection process is actually used with lathe is identical;Measurement range is affected less by nut seat.

Description

A kind of method of lead screw shaft bearings centering
Technical field
The invention belongs to the maintenance technology of machine upkeep technical field, more particularly to leading screw.
Background technology
Leading screw is widely used in Digit Control Machine Tool, and it act as the rotary motion of motor being changed into coordinate axess Linear motion.There is itself high precision, the high feature of assembly precision.The bearing block at leading screw two ends is to silk Thick stick plays the role of positioning, and the parallel and whether contour of two bearings seat will directly affect the running status of coordinate axess. When the bearing block at leading screw two ends is not parallel or contour, it will produce angle with guide rail, in leading screw rotating band Produce jitter phenomenon when dynamic ram moves back and forth, lead to the part processed that ripple occurs, the surface such as pit matter Amount problem, causes part unqualified, and serious will lead to part rejection, so that lathe cannot be normally used. Simultaneously because jitter phenomenon occurs, also lathe itself can be caused damage at each parts, increase maintenance cost, Acceleration equipment is aging.
Digit Control Machine Tool is used for unit, needs leading screw two end axles bearing is carried out with position detection and adjustment When, because the workbench of each rectilinear coordinates, main spindle box are assembled and put in place, leading screw is also mounted in bearing block, As the detection method before dispatching from the factory using Digit Control Machine Tool, these interference parts will be dismantled, and special inspection need to be used Survey instrument.Therefore the method generally adopting is installation slide block on guide rail, then on slide block, indicator bracket is installed, Centering is carried out to the bearing block at leading screw two ends.Its technological difficulties is:
1) the early-stage preparations cycle is long, and instrument preparation species is more, high labor intensive;
2) limited by indicator bracket range, more than leading screw distance guide rail 400MM then cannot detect;
3) affected by leading screw ball grooves, dial gauge is impacted larger, so that table dial gauge is damaged, right Dial framework stability requirement is high;
4) affected by leading screw degree of disturbing, test point cannot be accurately positioned, lead to prohibited data detection true;
5) it is subject to that data is inaccurate affects, need repeated detection, detection cycle is long;
6) affected by nut seat, measurement range is limited.
Above technological difficulties, make the position of lead screw shaft bearings detect that early-stage preparations are loaded down with trivial details, measure the cycle is long, Efficiency is low, high labor intensive, need to make specific purpose tool.
Fig. 1 is the lead screw shaft bearings Y-direction method for detecting position being carried out using guide rail commonly used at present, by cunning Moving left and right of block, makes percentage list index move left and right at leading screw two ends, and record data, using as adjustment The foundation of bearing block.In this way, 1. need to disengage the connection of nut seat and workbench, can be manually rotated Leading screw makes nut seat movement on the right side of leading screw, and when detection adjustment finishes back dress, existence position is unable to precise restoration Problem;2. limited by indicator bracket range, can only be to the bearing within guide rail and leading screw spacing 400MM Seat carries out position detection;3., when slide block turns left side shifting, affected by leading screw surface ball grooves, indicator Constantly impacted, the stability requirement to indicator bracket is higher, and whole measurement process is to dial gauge not Break and cause damage;4., when slide block is moved left to leading screw with shown position, affected by leading screw degree of disturbing, percentage Table cannot be accurately positioned when reaching left side, leads to measurement data to be forbidden;5. examined data is inaccurate Impact, needs repeated detection;6. a part of leading screw of nut seat occupancy leads to measurement distance to shorten, measurement error Increase.
Fig. 2 is the conventional lead screw shaft bearings Y-direction method for detecting position being carried out using workbench commonly used at present, Manually push work platform moves left and right, and so that percentage list index is moved left and right at leading screw two ends, records number According to using the foundation as adjustment bearing block.This method comprises the shortcoming of all technology one, simultaneously because needing Manual push work platform moves back and forth, and leads to physical demandss big.
Content of the invention
The present invention is directed to above-mentioned deficiency, provides a kind of quick and easy, lead screw shaft bearings that degree of accuracy is high Aligning method.
A kind of method of present invention lead screw shaft bearings centering, step is:
S1 unloads the leading screw protective cover of lathe, exposes leading screw;
S2 lays indicator bracket on the table at nut seat, and the thumb-ring pin of dial gauge is pressed in leading screw Straight surface;
S3 starts lathe makes workbench move closer at right-hand member bearing block from the left end right side, records indicator reading; Arranged orthogonal indicator bracket at nut seat on the table;
The adjustment of S4 horizontal direction:
Indicator bracket is adsorbed on lathe bed by S41, and dial gauge indicator contacts nut seat to be adjusted or screw Seating face;
The trip bolt at position to be adjusted is got loose by S42, makes it produce displacement using jack or crowbar; Observe percentage meter reading in movement, offset distance then fastens the tight of this position with prior measurements when identical Gu screw;
The adjustment of S5 vertical direction:According to early stage measurement result, make pad, spacer thickness size etc. In measured deviation value;
S53 unclamps the trip bolt at position to be adjusted, the pad making is added to below and fastens.
S6 checks:Adjustment executes S2, S3 step after finishing successively, exists if there is bearing block and nut seat Alternate position spike in horizontal and vertical plane exceeds required precision, then repeat set-up procedure, until alternate position spike exists Within required precision.
In the present invention, in S2 step, when laying indicator bracket, pointer is pressed in the straight surface of leading screw, Decrement about 0.2MM, adjustment percentage list index makes it point to " 0 ".
In the present invention, in S2 step, when laying indicator bracket, move about 1MM in axle to be detected, observe Pointer changes, and such as variable quantity readjusts percentage list index more than 0.01, until reading is less than 0.01.Should Operate for eliminating percentage Watch Error.
In the present invention, both horizontally and vertically indicator bracket to be laid and detection respectively.
In the present invention, S41 step, compression indicator 0.2MM about, rotate dial plate, make pointer point to 0 Position.Gently pull indicator about 0.1MM and loosen and make indicator resilience, observed reading, such as indicator is still also 0 Position then can carry out next step operation.
In the present invention, the support zone prioritizing selection bed piece of S42 step jack or crowbar.
In the present invention, S52 step, being made using steel material prevents deformation from change in size occurring.
In the present invention, in S6 step, lathe permissible accuracy value is generally 0.1MM.
In the present invention, move to right to right-hand member from left end during detection, left side initial position should be back to, such as refer to Pin points to " 0 ", and then data above effectively, as deviation is more than 0.01, then detects again.
Technical solution of the present invention brings following beneficial effect:
1) early-stage preparations instrument is few can be detected it is only necessary to prepare common dial gauge and dial framework.Tradition inspection Survey method need to prepare the slide block matching with guide rail model, and such as model mismatches and also needs again to order, and increases Detection cycle and cost;Slide block needs again to clean roll inside body using after finishing, and increases the amount of labour and guarantor Form this;Early-stage preparations cycle is short can be detected it is only necessary to disengaging leading screw protective cover and exposing leading screw, labor Fatigue resistance is little.Traditional detection method need to disengage protective cover, installs slide block on guide rail, if guide rail with anti- Guard shield is interfered, and also needs dismounting protective cover could install slide block, leads to time to increase, the amount of labour increases;
2) can be detected using common indicator bracket, the spacing no requirement (NR) to guide rail and leading screw.Passing In the detection method of system, using the method for slide block being installed on guide rail in leading screw and guide rail spacing more than 400MM Shi Zexu makes specific purpose tool or extension bar could detect;
3) do not affected by the ball grooves on screw mandrel surface, because leading screw rotarily drives movable workbench, dial gauge is pacified Dress on the table, with workbench synchronizing moving, fix by the relative position of dial gauge and screw mandrel.Traditional In detection method, dial gauge is constantly impacted by ball grooves in detection process, fragile dial gauge, And the stability requirement to indicator bracket is higher;When guide rail and leading screw spacing are more than 400MM, need to use special When instrument or extension bar, the increase leading to length is required with the stability in the large of specific purpose tool or extension bar It is directly proportional so that designing, difficulty of processing increases;
4) affected less by leading screw degree of disturbing, the state during detection process is actually used with lathe is identical.Tradition Need in detection method to disengage the connection of nut seat and workbench, lead to leading screw only to lean on two end axles bearing to position, Larger degree of disturbing is produced, for the leading screw of 3500MM length, maximum is up to 1.5MM in the middle of leading screw;
5) utilize the high accuracy of Digit Control Machine Tool, start coordinate axess and leading screw is detected, it is accurately fixed easily to realize Position, makes detection data accurate.Traditional method, because being affected by leading screw degree of disturbing, needs repeated detection, such as because of leading screw Excessive with guide rail spacing, specific purpose tool or extension bar need to be used, be then subject to specific purpose tool or extension bar simultaneously Intensity and rigidity effects;
6) measurement range affected by nut seat less, because nut seat is connected with workbench, start detection when Press close to one end lead screw shaft bearings, rigidity is all close with bearing block with intensity, the approximately whole inspection of achievable leading screw Survey.Nut seat is disengaged by traditional detection method with workbench, by nut seat movement to the leading screw other end, is subject to Degree of disturbing affects, and measures and can not be further continued for during degree of disturbing identical to left side detecting, leads to detection range to reduce, And cannot be accurately positioned, in the case that degree of disturbing is larger, the error information detection obtaining is larger.
Brief description
The conventional lead screw shaft bearings Y-direction method for detecting position that Fig. 1 is carried out using guide rail
The conventional lead screw shaft bearings Y-direction method for detecting position that Fig. 2 is carried out using workbench
The detection method to lead screw shaft bearings Y-direction position for Fig. 3 present invention
In figure, 1- lead screw shaft bearings, 2- nut seat, 3- leading screw, 4- bearing block, 5- guide rail, 6- guide rail, 7- Workbench, 8- lathe bed, 9- indicator bracket, 10- dial gauge.
Specific embodiment
With reference to example, this patent is further described.
See the detection method that Fig. 3 is the Y-direction position to lead screw shaft bearings 1 for the present invention, by starting lathe X-axis Leading screw 3 is made to rotate, nut seat 2 drives workbench 7 to move linearly, and dial gauge 10 pointer is moved by leading screw 3 left end Move to right-hand member, record data, using the foundation as adjustment bearing block 4.
Example:
The leading screw 7 of certain lathe X-direction is detected, laying at nut seat on the table 7 in lathe Indicator bracket 9, the thumb-ring pin of dial gauge 10 is pressed in the straight surface of leading screw.
Starting lathe makes workbench move closer at right-hand member bearing block from the left end right side, records indicator reading.
Find that right-hand member nut seat all has error in horizontal plane and in vertical plane, horizontal plane position is by mistake Difference reaches 0.3MM, and vertical plane site error is 0.1MM.
The adjustment of horizontal direction, indicator bracket is adsorbed on lathe bed 8, dial gauge indicator contact silk to be adjusted Female seat surface;Unclamp the right-hand member bearing block trip bolt that there is error, adjusted toward rightabout with jack Fasten after 0.3MM.
The set-up procedure of vertical direction is newly-increased 0.1MM sheetmetal, and cushioning is under bearing block.
Adjustment situation is detected, two end axles bearing and nut seat alternate position spike, in horizontal plane and vertically put down In face all within 0.1MM.Adjustment completes.
The present invention passes through the movement of lathe rectilinear coordinates axle, relies on workbench, main spindle box or ram that leading screw is entered Line position puts detection it is adaptable to leading screw rotates and the non-rotary drive mechanism of leading screw.Can be by changing dial gauge Indicator direction, detects to the parallel and contour of leading screw two end axles bearing.Dial gauge can be replaced with thousand The detection instrument such as table, lever indicator, dial test indicator is divided to be detected.

Claims (9)

1. a kind of method of lead screw shaft bearings centering, step is:
S1 unloads the leading screw protective cover of lathe, exposes leading screw;
S2 lays indicator bracket on the table at nut seat, and the thumb-ring pin of dial gauge is pressed in the straight surface of leading screw;
S3 starts lathe makes workbench move closer at right-hand member bearing block from the left end right side, records indicator reading;Arranged orthogonal indicator bracket at nut seat on the table;
The adjustment of S4 horizontal direction:
Indicator bracket is adsorbed on lathe bed by S41, and dial gauge indicator contacts nut seat to be adjusted or screw seating face;
The trip bolt at position to be adjusted is got loose by S42, makes it produce displacement using jack or crowbar;Observe percentage meter reading in movement, offset distance then fastens the trip bolt at this position with prior measurements when identical;
The adjustment of S5 vertical direction:According to early stage measurement result, make pad, spacer thickness size is equal to measured deviation value;
S51 unclamps the trip bolt at position to be adjusted, the pad making is added to below and fastens.
S6 checks:Adjustment executes S2, S3 step after finishing successively, exceeds required precision if there is the bearing block and nut seat alternate position spike in horizontal and vertical plane, then repeat set-up procedure, until alternate position spike is within required precision.
2. a kind of method of lead screw shaft bearings centering according to claim 1 is it is characterised in that in described S2 step, when laying indicator bracket, pointer is pressed in the straight surface of leading screw, decrement about 0.2MM, adjustment percentage list index makes it point to " 0 ".
3. a kind of method of lead screw shaft bearings centering according to claim 1 is it is characterised in that in described S2 step, when laying indicator bracket, move about 1MM in axle to be detected, observe pointer change, as variable quantity readjusts percentage list index more than 0.01, until reading is less than 0.01.This operation is used for eliminating percentage Watch Error.
4. a kind of lead screw shaft bearings centering according to claim 1 method it is characterised in that in described S2 step both horizontally and vertically respectively indicator bracket to be laid detected.
5. a kind of method of lead screw shaft bearings centering according to claim 1 is it is characterised in that described S41 step, compression indicator 0.2MM about, rotate dial plate, make pointer point to 0.Gently pull indicator about 0.1MM and loosen and make indicator resilience, observed reading, such as indicator still also then can carry out next step operation at 0.
6. a kind of method of lead screw shaft bearings centering according to claim 1 is it is characterised in that the support zone prioritizing selection bed piece of described S42 step jack or crowbar.
7. it is characterised in that described S51 step, made using steel material prevents deformation from change in size occurring to a kind of method of lead screw shaft bearings centering according to claim 1.
8. a kind of lead screw shaft bearings centering according to claim 1 method it is characterised in that in described S6 step lathe permissible accuracy value be generally 0.1MM.
9. a kind of method of lead screw shaft bearings centering according to claim 1 is it is characterised in that move to right to right-hand member from left end during described detection, left side initial position should be back to, as pointer points to " 0 ", then data above effectively, as deviation is more than 0.01, then detects again.
CN201510535090.9A 2015-08-27 2015-08-27 A kind of method of lead screw shaft bearings centering Active CN106475834B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681604A (en) * 2019-01-09 2019-04-26 成都飞机工业(集团)有限责任公司 A kind of double lead-screw synchronization adjustment method

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Publication number Priority date Publication date Assignee Title
GB763793A (en) * 1955-01-21 1956-12-19 John Oliver Creek And Edward W Direct reading linear-dimension gauge apparatus
CN201007640Y (en) * 2006-12-15 2008-01-16 大连机床集团有限责任公司 Shortcut type screw rod checking device
CN201016684Y (en) * 2006-12-23 2008-02-06 天水星火机床有限责任公司 Lathe bed guide rail precision checkout gear
CN102768003A (en) * 2012-05-28 2012-11-07 南通京鼎机械科技有限公司 Parallelism inspection tool for ball screw and guiding rail at gantry machining center
CN103084818A (en) * 2013-01-14 2013-05-08 苏州领创激光科技有限公司 Method and special rack capable of adjusting position of suspended beam screw rod to guide rail
CN203011289U (en) * 2013-01-16 2013-06-19 山东赛尔机械导轨有限公司 A precision detecting device of a linear guiderail pair
CN203241013U (en) * 2013-05-30 2013-10-16 苏州瑞格思创光电科技有限公司 Detection device used for detecting parallelism of guide rail
CN203615852U (en) * 2013-11-04 2014-05-28 江苏国力锻压机床有限公司 Intermediate diameter runout detection device used for precise screw rod

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB763793A (en) * 1955-01-21 1956-12-19 John Oliver Creek And Edward W Direct reading linear-dimension gauge apparatus
CN201007640Y (en) * 2006-12-15 2008-01-16 大连机床集团有限责任公司 Shortcut type screw rod checking device
CN201016684Y (en) * 2006-12-23 2008-02-06 天水星火机床有限责任公司 Lathe bed guide rail precision checkout gear
CN102768003A (en) * 2012-05-28 2012-11-07 南通京鼎机械科技有限公司 Parallelism inspection tool for ball screw and guiding rail at gantry machining center
CN103084818A (en) * 2013-01-14 2013-05-08 苏州领创激光科技有限公司 Method and special rack capable of adjusting position of suspended beam screw rod to guide rail
CN203011289U (en) * 2013-01-16 2013-06-19 山东赛尔机械导轨有限公司 A precision detecting device of a linear guiderail pair
CN203241013U (en) * 2013-05-30 2013-10-16 苏州瑞格思创光电科技有限公司 Detection device used for detecting parallelism of guide rail
CN203615852U (en) * 2013-11-04 2014-05-28 江苏国力锻压机床有限公司 Intermediate diameter runout detection device used for precise screw rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681604A (en) * 2019-01-09 2019-04-26 成都飞机工业(集团)有限责任公司 A kind of double lead-screw synchronization adjustment method

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