CN201802827U - Transmission belt tensioning device with dynamically and isostatically compensated tensioning force - Google Patents
Transmission belt tensioning device with dynamically and isostatically compensated tensioning force Download PDFInfo
- Publication number
- CN201802827U CN201802827U CN2010205438058U CN201020543805U CN201802827U CN 201802827 U CN201802827 U CN 201802827U CN 2010205438058 U CN2010205438058 U CN 2010205438058U CN 201020543805 U CN201020543805 U CN 201020543805U CN 201802827 U CN201802827 U CN 201802827U
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- Prior art keywords
- sliding sleeve
- slide bar
- sliding
- end cover
- spring
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Abstract
The utility model relates to a transmission belt tensioning device which is capable of dynamically and isostatically compensating tensioning force, comprising a sliding rod 7, a spring 10, a sliding bush 13, a supporting sleeve 20, an end cover 11 and clamping shafts 8 and 14. The sliding bush 13 is arranged within the supporting sleeve 20 and is capable of sliding in relation to the axial direction of the supporting sleeve. The inner hole of the sliding bush 13 is internally equipped with the sliding rod 7, the spring 10 and the end cover 11 are arranged on the sliding rod 7, the end cover 11 is fixed on the sliding rod 7 and is capable of sliding together with the sliding rod 7 in relation to the axial direction of the sliding bush 13. The sliding rod 7 which is arranged on one end of the device is fixedly equipped with the clamping shaft 8, the sliding bush 13 which is arranged on the other end of the device is fixedly equipped with the clamp shaft 14, and the clamping shafts 8 and 14 are equipped with rollers 15. The transmission belt tensioning device with dynamically and isostatically compensated tensioning force provided by the utility model has the advantages that the two rollers 15 are simultaneously shrunk inwards to clamp the two elastic sides of a transmission belt 4 by means of the effect of the spring 10, the clamping forces are equal by the action of the spring and are automatically compensated, the two elastic sides of the transmission belt are simultaneously provided with a dynamic and isostatic tensioning force, the tensioning forces of the two sides of the transmission belt are basically controlled at stable state and the operation stability of the machine tool and the processing and positioning precision are ensured.
Description
Technical field
The utility model relates to a kind of parts of numerical control machine tool gantry machining center, particularly a kind of electric-motor-driving band tension device of dynamically isostatic compensation tension force.
Background technique
Gantry machining center is a kind of being used for heavy parts to be carried out thick accurately machined numerical control machine tool, have characteristics such as bearing capacity is strong, stroke is big, precision height, can mill, boring, various operations such as bore, attack, only need a clamping just can finish multiple working procedure in order, also can carry out three-dimensional processing to large mold, the efficient height, good processing accuracy.The Y-axis feed movement of gantry machining center drives slide plate by motor by lead-screw drive mechanism and does reciprocating linear motion along beam guideway and finish, and its to-and-fro motion transfers realization by motor positive and negative.Because the Y-axis feed movement is a forward and reverse straight line motion, slide plate and motor are wanted frequent forward and reverse motion of carrying out, and be like this, strong especially to the tensioning requirement of driving belt.The tension force of at present most driving belt all is to realize by the distance of regulating motor base and leading screw.Though this structure is simple, exists tangible deficiency:
The one,, motor and slide plate are in forward and reverse motion, pilled-in selvedge one side of driving belt is stressed bigger, and the slack list is stressed first less, sometimes also be zero, when slide plate transfers another direction motion to by a direction, motor steering also forwards another direction to by a direction simultaneously, and at this moment, one side of the original tensioning of driving belt can be loosened suddenly, the originally then tensioning suddenly of one side of pine, a unexpected like this pine one is tight, and alternate can be brought very big impact to motor and automatical control system, make moment load rising, can cause system alarm when serious.
The 2nd,, because electrical machine belt pulley, leading screw belt wheel, driving belt three have certain foozle, the elasticity that had of belting itself in addition, the tensioning pulling force that the driving belt pilled-in selvedge is born in transmission process, all the time be among the variation constantly, and the tension force of slack list also can completely lose sometimes, thereby influences the smooth transfer of feed force greatly, and the stability and the Location accuracy of machine tool feed motion made a big impact.
Summary of the invention
Technical barrier to be solved in the utility model is, overcome above-mentioned the deficiencies in the prior art, a kind of belt tensioner of dynamic equalization compensation tension force is provided, can make driving belt in movement process, its pine--tight dual-side is in tensioning state all the time simultaneously, and dual-side is in forward and reverse alternation process, and its tension force compensates automatically, auto-tensioning, thus make its tension force be in plateau all the time.
The utility model technical solution is: comprise slide bar 7, spring 10, sliding sleeve 13, supporting sleeve 20, end cover 11, clamp shaft 8,14, cylinder 15 and bearing 16, supporting sleeve 20 is a sleeve, be provided with in its endoporus can with its sliding sleeve that slides to axial 13; Sliding sleeve 13 is a logical heart slide block, has placed slide bar 7 in its endoporus, and spring 10 and end cover 11 are located on the slide bar 7, and end cover 11 is fixedly connected with slide bar 7; One end of sliding sleeve 13 is provided with the shaft shoulder, is provided with in the hole of the other end to hold cover 11 in axial sliding with slide bar 7 relative sliding sleeves 13, and spring 10 is located between the shaft shoulder and end cover 11 of sliding sleeve 13; The two ends of slide bar 7 are respectively equipped with clamp shaft 8,14, and the clamp shaft 8 and the slide bar 7 of one end are fixedly connected, and the clamp shaft 14 and the sliding sleeve 13 of the other end are fixedly connected, and are respectively equipped with roller 15 on two clamp shafts 8,14.
Connect by key 9 between the shaft shoulder of sliding sleeve 13 1 ends and the slide bar 7.
Supporting sleeve 20 is inside and outside square sleeve, and sliding sleeve 13 is the logical heart slide block of square-outside and round-inside, between sliding sleeve 13 and the supporting sleeve 20, be between end cover 11 and the sliding sleeve 13 and be slidingly matched.
Two clamp shafts 8,14 are the minor axis of end band installing ring, and the installing ring of one end is located on the slide bar 7, and is fixedly connected with it; The installing ring of the other end is located at the outside of end cover 11, and is fixedly connected with sliding sleeve 13; Be located in the roller 15 on two clamp shafts 8,14 and be provided with rolling bearing 16.
The advantage that the utility model and prior art compare is, by from the equal and opposite in direction direction of same spring 10 to the right active force that puts on driving belt degree of tightness both sides, make driving belt degree of tightness both sides be subjected to dynamic and balanced tension force effect simultaneously, and the tension force kept stable on both sides.Though it is stressed still less that driving belt transmits the stressed slack list that is still big, opposite side of pilled-in selvedge one side of power, gap is dwindled far away, the situation of slack list forfeiture tension force particularly can not occur.The utility model is simple in structure, and the reliability height helps guaranteeing the lathe traveling comfort, effectively improves setting accuracy on work.
The drawing explanation
Fig. 1 is a structural representation of the present utility model, also is the A-A profile of Fig. 3;
Fig. 2 is the B-B sectional drawing of Fig. 1;
Fig. 3 is the position view of the utility model in lathe.
Number in the figure: 1-slide plate, 2-crossbeam, 3-leading screw belt wheel, 4-driving belt, the 5-electrical machine belt pulley, 6-motor, 7-slide bar, 8-clamp shaft, the 9-key, the 10-spring, 11-holds cover, the 12-fastening screw nut, 13-sliding sleeve, 14-clamp shaft, the 15-roller, 16-bearing, 17-circlip, the 18-baffle ring, 19-door, 20-supporting sleeve.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
The utility model comprises slide bar 7, spring 10, sliding sleeve 13, supporting sleeve 20, end cover 11, clamp shaft 8,14, roller 15 and bearing 16.Supporting sleeve 20 is an inside and outside square rectangular sleeve, and sliding sleeve 13 is the logical heart slide block of square-outside and round-inside, and sliding sleeve 13 places supporting sleeve 20, and can axially slide in supporting sleeve 20.Slide bar 7 is through in the endoporus of sliding sleeve 13, and spring 10 and end cover 11 are located on the slide bar 7, end cover 11 and slide bar 7 scyewed joint, and end cover 11 can endwisely slip with slide bar 7 relative sliding sleeves 13.
One end body of sliding sleeve 13 is provided with the shaft shoulder, is provided with end cover 11 in the hole of the other end, and spring 10 is located between the shaft shoulder and end cover 11 of sliding sleeve 13.But spring 10 promote-side cover 11 under the effect of elastic force drives the relative together sliding sleeve 13 of slide bar 7 and moves axially.By the position of adjustable side cover 11, the impacting force of adjustable springs 10.The outer end of end cover 11 is provided with fastening screw nut 12.
It is the minor axis of end band installing ring that the two ends of slide bar 7 are respectively equipped with clamp shaft 8,14, two clamp shafts 8,14, and the installing ring of one end is located on the slide bar 7, and by screw on slide bar 7.The installing ring of the other end is located at the outside of end cover 11, and by screw on sliding sleeve 13; End cover 11 is this end installing ring and sliding sleeve 13 motions relatively, and this end installing ring is provided with a boss, but the stroke of opposite end cover 11 carries out spacing.Be respectively equipped with roller 15 on the minor axis of two clamp shafts 8,14, be provided with bearing 16 in the roller 15, the inner axle of roller 15 is provided with door 19, and the outer end axle is provided with baffle ring 18 and circlip 17.
For preventing that slide bar 7 from rotating relative to sliding sleeve 13, connect by key 9 between the interior shaft shoulder of sliding sleeve 13 and the slide bar 7.Slide bar 7 and end cover 11 axially slide in the circular port of sliding sleeve 13, sliding sleeve 13 axially slides in the rectangular opening of supporting sleeve 20 and can not relatively rotate, key 9 is used to prevent that slide bar 7 from producing relative to the rotating of sliding sleeve 13, and roller 15 rotates to reduce friction simultaneously along with the motion of driving belt 4.
The motor of present embodiment and the transmission between the leading screw adopt timing belt to carry out transmission as driving belt mostly.During use, the outside, degree of tightness both sides that two rollers 15 of the present utility model is clamped in driving belt 4 gets final product.For improving the stability that device uses, supporting sleeve 20 can be fixed on the motor cabinet.
During work, two rollers 15 inwardly shrink the outside on the degree of tightness both sides that are clamped in driving belt 4 simultaneously under the effect of spring 10, to apply the inside equal-sized elasticity clamping force of a pair of direction, make the degree of tightness both sides tensioning simultaneously of driving belt 4, and tension force is under the effect of same spring force, equal and opposite in direction, compensation automatically.
The pilled-in selvedge of driving belt 4 and slack list all are subjected to dynamic and balanced tension force effect, and it is constant substantially that the tension force of slack list keeps, and the situation of slack list forfeiture tension force can not occur, help further guaranteeing lathe slide plate traveling comfort.When pulling force moment of one or both sides diminishes, it is loose that driving belt 4 can become, spring 10 will extend at once, promoting slide bar 7 slides in sliding sleeve 13, driving roller 15 continues to be close to driving belt 4 both sides with the size of former tension force basically, keep the relatively stable of tension force, thereby make pulling force come back to original size; On the contrary, when pulling force moment becomes big, driving belt 4 can collapse tightlyer, spring 10 will shorten at once, and slide bar 7 slides to another direction in sliding sleeve 13, and the tension force of 15 pairs of driving belt 4 both sides of roller is remained unchanged substantially, make pulling force get back to original size equally, thereby the stability that keeps driving belt 4 transmission of drive force, and then keep slide plate 1 feeding campaign on crossbeam 2 of lathe steady, help guaranteeing Location accuracy.
During the forward and reverse motion of lathe slide plate 1, though that driving belt 4 transmits the stressed slack list that is still big, opposite side of pilled-in selvedge one side of power is stressed still less, gap is not when having dynamic tension.When lathe slide plate 1 transfers another direction motion to by a direction, motor 6 turns to by a direction and forwards another direction to, driving belt 4 original pilled-in selvedges can relax to certain stress gently becomes the slack list, rather than relax to loose fully, slack list originally then can mild tensioning become pilled-in selvedge by certain stress, rather than begin tensioning from complete relaxed state, in this process, sliding sleeve 13 can axially be free to slide under the effect of slide bar 7 and spring 10, to the new pilled-in selvedge position of deflection, reach new balance by the position slippage of the former pilled-in selvedge of original deflection up to the active force of new pilled-in selvedge and slack list and spring 10.Such driving belt 4 edge slack transfer processes are much steady when not having dynamic tension, having eliminated the impact of prominent tight prominent pine to motor 6 and automatical control system, make the slide plate 1 of lathe more steady when forward and reverse motion.
Claims (5)
1. the belt tensioner of dynamic equalization compensation tension force, it is characterized in that: comprise slide bar 7, spring 10, sliding sleeve 13, supporting sleeve 20, end cover 11, clamp shaft 8,14, cylinder 15 and bearing 16, supporting sleeve 20 is a sleeve, be provided with in its endoporus can with its sliding sleeve that slides to axial 13; Sliding sleeve 13 is a logical heart slide block, has placed slide bar 7 in its endoporus, and spring 10 and end cover 11 are located on the slide bar 7, and end cover 11 is fixedly connected with slide bar 7; One end of sliding sleeve 13 is provided with the shaft shoulder, is provided with in the hole of the other end to hold cover 11 in axial sliding with slide bar 7 relative sliding sleeves 13, and spring 10 is located between the shaft shoulder and end cover 11 of sliding sleeve 13; The two ends of slide bar 7 are respectively equipped with clamp shaft 8,14, and the clamp shaft 8 and the slide bar 7 of one end are fixedly connected, and the clamp shaft 14 and the sliding sleeve 13 of the other end are fixedly connected, and are respectively equipped with roller 15 on two clamp shafts 8,14.
2. the belt tensioner of a kind of dynamic equalization compensation tension force as claimed in claim 1 is characterized in that: connect by key 9 between the shaft shoulder of sliding sleeve 13 1 ends and the slide bar 7.
3. the belt tensioner of a kind of dynamic equalization compensation tension force as claimed in claim 1, it is characterized in that: supporting sleeve 20 is inside and outside square sleeve, sliding sleeve 13 is the logical heart slide block of square-outside and round-inside, between sliding sleeve 13 and the supporting sleeve 20, be between end cover 11 and the sliding sleeve 13 and be slidingly matched.
4. the belt tensioner of a kind of dynamic equalization compensation tension force as claimed in claim 1, it is characterized in that: two clamp shafts 8,14 are the minor axis of end band installing ring, and the installing ring of one end is located on the slide bar 7, and is fixedly connected with it; The installing ring of the other end is located at the outside of end cover 11, and is fixedly connected with sliding sleeve 13; Be located in the roller 15 on two clamp shafts 8,14 and be provided with rolling bearing 16.
5. the belt tensioner of a kind of dynamic equalization compensation tension force as claimed in claim 1 is characterized in that: end cover 11 passes through scyewed joint with slide bar 7, and the outside of end cover 11 also is provided with fastening screw nut 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205438058U CN201802827U (en) | 2010-09-21 | 2010-09-21 | Transmission belt tensioning device with dynamically and isostatically compensated tensioning force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205438058U CN201802827U (en) | 2010-09-21 | 2010-09-21 | Transmission belt tensioning device with dynamically and isostatically compensated tensioning force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802827U true CN201802827U (en) | 2011-04-20 |
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ID=43872327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205438058U Expired - Lifetime CN201802827U (en) | 2010-09-21 | 2010-09-21 | Transmission belt tensioning device with dynamically and isostatically compensated tensioning force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979216A (en) * | 2010-09-21 | 2011-02-23 | 江苏恒力组合机床有限公司 | Drive belt tension device for dynamically balancing and compensating tension force |
-
2010
- 2010-09-21 CN CN2010205438058U patent/CN201802827U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979216A (en) * | 2010-09-21 | 2011-02-23 | 江苏恒力组合机床有限公司 | Drive belt tension device for dynamically balancing and compensating tension force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20120704 |