CN2370992Y

CN2370992Y - Hand-held numerically controlled cutting machine driven by wire rope

Info

Publication number: CN2370992Y
Application number: CN 99233160
Authority: CN
Inventors: 张益民
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-16
Filing date: 1999-04-16
Publication date: 2000-03-29
Anticipated expiration: 2009-04-16

Abstract

The utility model relates to a hand-held numerically controlled cutting machine driven by a wire rope, which is composed of an X-direction executive assembly driven by a reciprocating movement wire rope, a Y-direction executive assembly of a reciprocating movement telescopic rod, a numerically controlled system, a belt wheel trolley mechanism, an outer shell of the whole machine, a plate type straight-line guide rail, a base, etc. The executive assembly driven by a wire rope is composed of a miniature motor, a gapless gear speed reducer, a steering winding device, etc. The executive assembly of a telescopic rod is composed of a miniature motor, a gapless gear speed reducer, a rack, the telescopic rod, a regulation support frame, an axial sliding bearing, an automatic height regulation member, a clamping device for cutting guns, etc. The utility model has the advantages of big cutting ranges, high cutting processing accuracy, compact structure, small size, lightness and convenient carrying and transfer.

Description

Portable steel cable drives numerical control cutting machine

The utility model relates to a kind of oxy-acetylene or method for electrically of adopting metal is carried out the numerical control cutting machine of cutting processing, is meant that especially a kind of portable steel cable drives numerical control cutting machine.

Existing micro numerical cutting machine, the long X range direction of cutting stroke generally adopts the wheel and rack engagement to drive, because there is trueness error in every section pitch of teeth of manufacturing gear strip, the circle of the meshing generation of wheel and rack is beated, and influences cutting accuracy; And adopt rack-and-pinion to mesh the cost height of type of drive, and cut coverage also is restricted, and cutting is more preceding unproductive time, has increased the cutting operation trouble.In addition, owing to the Cutting Length direction adopt to be that guide rail structure has increased machine heavy, cause mechanism not too compact simultaneously, body is excessive, has increased difficulty for the cutting machine mobile operating.This case applicant once participated in " the portable steel band type numerical control cutting machine " of the ZL95237240.1 that applies for, reciprocating motion at directions X replaces existing guide rail mechanism by adopting steel band executing agency, accomplish to have alleviated greatly the gross weight of cutting machine, its structural design compactness, body is little and amount is light, not only guide and support conveniently, and be easy to shift workplace and keeping collection.But the subject matter of its existence is, makes guide rail and drives with steel band, causes damage easily, and structure is also complicated, and changes that to raise the device internal structure not too reasonable, causes difficulty to assembling, and the steel cable stiff end is easily loosening and cause fault; The guiding that its Y direction moves back and forth expansion link adopts homemade directive wheel, influences the raising of cutting accuracy; In addition, its no gap meshing gear decelerator is adjusted relatively difficulty of gear backlash, and this is because unreasonable on the structural design, makes that to adjust the position easily loosening and cause, and its result also influences the further raising of cutting accuracy.

The problems referred to above that exist at prior art, the purpose of this utility model, be on the architecture basics of patent No. ZL95237240.1 " portable steel band type numerical control cutting machine ", provide that a kind of reliable working performance, cutting accuracy height, cut coverage are unrestricted, body is light in a small amount and portable portable steel cable drives numerical control cutting machine.

Solution of the present utility model is as follows.It has one group of directions X and moves back and forth steel cable driving executive module, this assembly includes a micromotor, the rotating shaft of micromotor links to each other with the input of a no gap gear reduction unit, the interior rotating shaft input that the output rotating shaft of no gap gear reduction unit is raised an interior cylinder in the device by a shaft coupling and a commentaries on classics links to each other, should in gear of output end in the interior rotating shaft of cylinder be meshed with a transmission gear, this transmission gear again with in device is raised in commentaries on classics in another input end gear in interior rotating shaft of cylinder be meshed; Have one group of Y direction and move back and forth the expansion link executive module, this assembly includes a micromotor, the rotating shaft of micromotor links to each other with the input end gear of a no gap gear reduction unit, be fixed with one in the output rotating shaft of no gap gear reduction unit and transmit gear, this transmission gear is meshed with tooth bar on being connected an expansion link, expansion link is installed in to be adjusted on the support, and the expansion link two ends are equipped with and are heightened part automatically, heighten automatically the cutting gun clamper is housed again on the part; Also has a machine shell, the belt wheel trolley body that is connected mutually with it is housed in the machine shell, also be equipped with in the machine shell to be fixed on and on the belt wheel trolley body base plate complete machine sent the digital control system parts of control instruction, aforementioned directions X moves back and forth contained micromotor, no gap gear reduction unit and the commentaries on classics of steel cable driven unit and raises device etc., and contained micromotor, no gap gear reduction unit and the adjustment support etc. of Y direction reciprocating motion expansion link executive module, all be installed on the base plate of the belt wheel trolley body in the machine shell with fastening connection piece.The utility model feature part structurally is: have a longitudinal section, front and back that is in belt wheel trolley body below and be

The base of shape, the left and right two ends of base bottom are fixed with the balance and stability bearing vertical with base respectively.The forward and backward two ends of balance and stability bearing are equiped with the stable swing arm of adjusting of the base that is screwed in the screw of offering on the bearing respectively, the left and right both end sides in base top is fixed with the steel cable bearing respectively, base top is flatly put a board-like line slideway that is connected mutually with base, and it is inner and pass machine shell and stretch in its and arranged on left and right sides that above-mentioned base and board-like line slideway all are in machine shell; The casing that device is raised in described commentaries on classics is fixed on the base plate of belt wheel trolley body, the interior rotating shaft of two interior cylinders is located in respectively to change and is raised in the ball bearing of installing on the device casing, the aforementioned transmission gear that connects two interior cylinders is installed in to change and raises on the device casing, be equiped with electromagnetic clutch commonly used and gear of output end in the interior rotating shaft of aforementioned another interior cylinder, this gear of output end and one is installed in and changes the transmission gear raise on the device casing and be meshed, this transmission gear again be installed in the screw gear that changes on the screw mandrel in and be meshed, being positioned at changes the commentaries on classics screw rodb base raise the device casing and drops on the axis hole of offering on the casing, in raising the device casing, commentaries on classics also is equiped with the backstay that is fixed on the casing, the outer sliding sleeve that is fixedly linked with the spigot nut support that is with on the backstay, nut rotation set on the spigot nut support is on interior commentaries on classics screw mandrel, two leading blocks also are housed on the spigot nut support, change on two interior cylinders raising device and twining a steel cable respectively in the same way, one end of these two steel cables is fixed in the place on the cylinder by the stationary gland of two interior cylinder ends respectively, and the other end passes through two leading blocks on the spigot nut support respectively, change the transition pulley of raising on the device casing through being installed in respectively then, pass a machine shell left side more respectively, right two survey faces are separately fixed at a base left side at last, on the steel cable bearing at right two ends; Described expansion link is connected mutually with the guiding rail of an axial plain bearing, the slide block of axial plain bearing then is connected mutually with adjusting support, and the Y direction moves back and forth the contained micromotor of expansion link assembly and all is connected on the adjustment support that is connected with the base plate of belt wheel trolley body with no gap gear reduction unit; Four of floor below that the board-like line slideway that base top all is connected is clamped in the belt wheel trolley body are between the guiding wheel that level puts, and the front side edge of board-like line slideway and back side edge are by in the annular groove of offering on the periphery of sliding two front sides guiding wheels that are embedded in the belt wheel trolley body and two rear side guiding wheels respectively, make the weighing load plate type line slideway and the base of belt wheel trolley body support, and the belt wheel trolley body under external force can be along board-like line slideway side-to-side movement, the little axle in center of two front side guiding wheels of belt wheel trolley body is connected in respectively on the base plate of belt wheel trolley body, and the little axle in center of two rear sides guiding wheels is gone up respectively sliding sleeve and one and point to two adjustment levers between the rear sides guiding wheel, these two middle parts of adjusting lever all connect by the base plate of the pin rod nut assembly and the belt wheel trolley body of top pin alive mutually, these two the other end of adjusting levers then are connected with a base plate rear side below from the belt wheel trolley body respectively and put in adjusting screw(rod) in the screw that corresponding adjustment (adjusting) lever offers, the inner of these two adjusting screw(rod)s contacts with block on the base plate that is connected in the belt wheel trolley body respectively, and these two adjusting screw(rod)s expose to that the outer end of side then is fixed with an adjusting handle respectively behind the base plate.

Operation principle of the present utility model with said structure is as follows.Under the instruction of digital control system parts, directions X moves back and forth the micromotor execution command in the steel cable driving executive module, the no gap gear reduction unit that driving is attached thereto, the output driving commentaries on classics of this decelerator is raised interior two the interior cylinders of device and is turned right left or simultaneously simultaneously.Owing to transmit the effect of gear, change in screw mandrel and one pair cylinder in making with equal rotation speed operation, can realize so again that one of two steel cable on the cylinder in a pair are raised out and purpose that another root changes over to, can guarantee that also two steel cables realize pulling force on same straight line, realize that therefore the belt wheel trolley body makes at the uniform velocity linear reciprocating motion.If micromotor just changes, an interior cylinder is changed over to steel cable, cylinder is then raised out steel cable in another so; If the micromotor counter-rotating, then an interior cylinder is raised out steel cable by steel cable is changed over to change into, and cylinder changes steel cable over to by steel cable is raised out to change in another.Like this, drive steel cable by interior cylinder, steel cable driving pulley trolley body is again done the directions X reciprocating motion.Equally, under the instruction of digital control system parts, the Y direction moves back and forth the micromotor execution command in the expansion link executive module, the no gap gear reduction unit that driving is attached thereto, the tooth bar of the gear of output end of this decelerator by being meshed with it, drive the expansion link that links to each other with tooth bar again together with the guiding rail of fixing the axial plain bearing on it, do the reciprocating motion of Y direction along being fixed on the slide block of adjusting the axial plain bearing on the support together.Like this, the cutting gun that is contained on the cutting gun clamper of expansion link end just can carry out cutting processing to metal blank according to command request.In cutting plate process, the heightening part automatically and can carry out the cutting gun Height Adjustment of expansion link end, and the perpendicularity of the board-like line slideway of expansion link and base top is to realize by the adjustment support at adjusting expansion link place.In cutting process, the base of complete machine is placed on to be cut to fix down on the metal blank and moves, therefore before cutting, should rotate and regulate four base stable regulation swing arms that are in complete machine four angular direction, so that complete machine base and balance and stability bearing are adjusted to the optimum balance stable state.

If stop using after a metallic plate is finished in the cutting gun cutting; or complete machine to be placed on another plate and work on; can all change the steel cable on the interior cylinder of input over to this moment; then untie the fixedly knot of this root steel cable on its steel cable holder; shut down then; make in another electromagnetic clutch dead electricity on cylinder and open automatically; untie the fixedly knot of steel cable on its outside steel cable holder on the cylinder in this again; cylinder in then being somebody's turn to do with the handle rotation can also all be regained the steel cable of this end.So just steel cable can be recovered to the left and right two ends of cutting machine complete machine housing, for next step machine shell be separated from base and board-like line slideway together with the parts in the shell and got ready.

The operation that machine shell is separated from base and board-like line slideway together with the parts in the shell is performed such: two adjusting handles of side behind the base plate of anticlockwise rotation belt wheel trolley body, driving two adjusting screw(rod)s respectively rotates, application of force effect by two adjustment (adjusting) levers, make two rear sides guiding wheels of base plate rear side of belt wheel dolly draw back slightly, thereby make four guiding wheels loosen clamping to board-like line slideway, can upwards mention machine shell together with the parts in the shell and be separated with the board-like line slideway and the base of below this moment, and this just greatly facilitates with portable keeping after taking and using.Machine shell is then opposite with the aforesaid operations process together with the operating process that the installation of the parts in the shell is attached on board-like line slideway and the base, when four guiding wheels with the belt wheel trolley body place the forward and backward rear flank of board-like line slideway, two adjusting handles of clockwise rotation, its result makes two rear sides guiding wheels slightly to reach, thereby four Guide vehicles wheels is formed and tighten up the clamping of board-like line slideway but its clamping degree can guarantee the belt wheel trolley body again moves along board-like line slideway is successfully left and right under external force.

The utility model replaces existing gear and the tooth bar mechanism that is meshed in the reciprocating motion of directions X by adopting steel cable to drive executing agency, replace the steel band guide rail with board-like line slideway, and in steel cable driving executing agency, adopted the screw mandrel guiding parts to lead accurately, this just makes the reasonable in design compactness of cutting machine, body is light in a small amount, reliable working performance, cut coverage is unrestricted, can guarantee the precision of cutting track linearity.The fixing process of steel cable on interior cylinder improved, and overcome the loosening easily defective of steel cable stiff end.The guiding that the Y direction moves back and forth expansion link in the assembly adopts axial plain bearing to replace general directive wheel, has further improved cutting accuracy.The activity design-adjustable of the rear side guiding wheel of belt wheel trolley body makes host machine part of the present utility model separate with base with guide rail easily, thereby is is conveniently guiding and supporting transfer work-yard and keeping collection.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the front view of a kind of concrete structure of the utility model;

Fig. 2 is Fig. 1 vertical view of the present utility model;

A-A, B-B, C-C, the D-D that Fig. 3, Fig. 4, Fig. 5, Fig. 7 and Fig. 6 are respectively Fig. 1 analyses and observe amplification assumption diagram and E to zoomed-in view;

Fig. 8 is that the F of Fig. 7 is to view;

Fig. 9 is that the G of Fig. 8 is to view;

Figure 10 is the forward sectional structure chart of two no gap gear reduction units of the present utility model;

Figure 11 is the H-H cutaway view of Figure 10.

Referring to Fig. 1 to Figure 11.The utlity model has one group of directions X and move back and forth steel cable driving executive module, this assembly includes a micromotor 1, the rotating shaft 101 of micromotor 1 links to each other with the input end gear 201 of a no gap gear reduction unit 2, interior rotating shaft 402 inputs that the output rotating shaft 202 of no gap gear reduction unit 2 is raised an interior cylinder 401 of device 4 by a shaft coupling 3 and a commentaries on classics link to each other, should in gear of output end 403 and in the interior rotating shaft 402 of cylinder 401 transmit gear 404 and be meshed, this transmission gear 404 again with commentaries on classics raise device 4 interior in another input end gear 407 in interior rotating shaft 406 of cylinder 405 be meshed; Have one group of Y direction and move back and forth the expansion link executive module, this assembly includes a micromotor 5, the rotating shaft 51 of micromotor 5 links to each other with the input end gear 601 of a no gap gear reduction unit 6, be fixed with one in the output rotating shaft 602 of no gap gear reduction unit 6 and transmit gear 7, this transmission gear 7 be connected in an expansion link 8 upper racks 9 and be meshed, expansion link 8 is installed in to be adjusted on the support 10, expansion link 8 two ends are equipped with and are heightened part 11 automatically, heighten automatically cutting gun clamper 12 is housed again on the part 11; Also has a machine shell 13, the belt wheel trolley body that is connected mutually with screw with it is housed in the machine shell 13, also be equipped with in the machine shell 13 to be fixed on and on the belt wheel trolley body base plate 14 complete machine sent the digital control system parts 15 of control instruction, aforementioned directions X moves back and forth the contained micromotor 1 of steel cable driven unit, device 4 etc. is raised in no gap gear reduction unit 2 and commentaries on classics, and the Y direction moves back and forth the contained micromotor 5 of expansion link executive module, no gap gear reduction unit 6 and adjustment support 10 etc. all are installed on the base plate 14 of the belt wheel trolley body in the machine shell 13 with fastening connection piece.The utility model feature part structurally: have one be in belt wheel trolley body below before, back longitudinal section is the base 16 of shape, the left side of base 16 bottoms, right two ends are fixed with the balance and stability bearing 17 vertical with base 16 respectively, before the balance and stability bearing 17, back two ends all are equiped with the stable swing arm 18 of adjusting of the base that is screwed in the screw of offering on the bearing 17 again respectively, a left side, base 16 top, right both end sides is welded with steel cable bearing 21 respectively, a board-like line slideway 20 that welds mutually with base 16 is put on base 16 top water level lands, and above-mentioned base 16 and board-like line slideway 20 all are in machine shell 13 inside and pass machine shell 13 and stretch on its left side, right both sides; Changeing the casing 408 usefulness screws of raising device 4 is fixed on the base plate 14 of belt wheel trolley body, two

interior cylinders

401 and 405 interior rotating

shaft

402 and 406 are located in respectively and are changeed in the ball bearing 409 of raising installing on the device casing 408, connecting transmission gear 404 between two

interior cylinders

401 and 405 is installed in to change and raises on the device casing 408, be equiped with electromagnetic clutch 410 commonly used and gear of output end 411 in the interior rotating shaft 406 of aforementioned another interior cylinder 405, gear of output end 411 and one is installed in and changes the transmission gear 412 raise on the device casing 408 and be meshed, this transmission gear 412 again be installed in the screw gear 414 that changes on the screw mandrel 413 in and be meshed, being positioned at changes the commentaries on classics screw mandrel 413 raise device casing 408 and is located in the axis hole of offering on the casing 408, in casing 408, also be provided with the backstay 415 that is fixed on the casing 408, the outer sliding sleeve 417 that is fixedly linked with spigot nut support 416 that is with on the backstay 415, nut rotation set on the spigot nut support 416 is on interior commentaries on classics screw mandrel 413, two leading

blocks

418 and 419 also are housed on the spigot nut support 416, change on two the

interior cylinders

401 and 405 raise device 4 and twining

steel cable

420 and 421 respectively in the same way, these two steel cables 420 and an end of 421 are fixed in the place on the

cylinder

401 and 405 by the

stationary gland

422 and 423 of two

interior cylinders

401 and 405 ends respectively, and the other end passes through the leading

block

418 and 419 on the spigot nut support 416 respectively, change the transition pulley of raising on the device casing 408 424 and 425 through being installed in respectively then, pass the left side of machine shell 13 more respectively, right flank is separately fixed at base 16 left sides at last, on the steel cable bearing 21 at right two ends; Described expansion link 8 adopts a square tube, it is connected mutually with the guiding rail 191 of an axial plain bearing 19, the slide block 192 of axial plain bearing 19 then is connected mutually with adjusting support 10, and the Y direction moves back and forth expansion link assembly contained micromotor 5 and no gap gear reduction unit 6 all is connected on the adjustment support 10 with screw; The board-like line slideway 20 that base 16 tops are connected is clamped in four of belt wheel trolley body base plate 14 belows and is between the guiding

wheel

22 and 23 that level puts, and the front side edge of board-like line slideway 20 and back side edge are by in the annular groove of offering on the periphery of sliding two front sides guiding wheels 22 that are embedded in the belt wheel trolley body and rear side guiding wheel 23 respectively, make the weighing load plate type line slideway 20 and the base 16 of belt wheel trolley body support, and the belt wheel trolley body under external force can be along board-like line slideway 20 side-to-side movements, the little axle 221 in the center of two front side directive wheels 22 of belt wheel trolley body is connected in respectively on the base plate 14 of belt wheel trolley body, and on the little axle in the center of two rear side directive wheels 23 231 respectively sliding sleeve one and point to two adjustment levers 24 between the rear sides guiding wheel 23, these two middle parts of adjusting lever 24 all connect by the base plate 14 of the pin rod nut assembly 25 and the belt wheel trolley body of top pin alive mutually, these two the other end of adjusting levers 24 then are connected with base plate 14 a rear sides below from the belt wheel trolley body respectively and put in adjusting screw(rod) 26 in the screw that corresponding adjustment (adjusting) lever 24 offers, the inner of these two adjusting screw(rod)s 26 respectively be connected in belt wheel trolley body base plate 14 on block 27 contact, the outer end that these two adjusting screw(rod)s 26 expose to sides, base plate 14 back then is fixed with an adjusting handle 28 respectively.

Referring to Figure 10 and Figure 11, this is the embodiment of a kind of structure of no gap gear reduction unit 2 and 6.The input end gear 201 of no gap gear reduction unit 2 is meshed with gear 203 on being positioned at first gear shaft 204, the gear of first gear shaft 204 itself is meshed with the gear 205 on being positioned at second gear shaft 206, the gear of second gear shaft 206 itself is meshed with the gear 207 on being positioned at the 3rd gear shaft 208, the 3rd gear shaft 208 209 of gears own are positioned in the output rotating shaft 202, first gear shaft 204, the two ends of second gear shaft 206 and the 3rd gear shaft 208 all are set with the gap and adjust slide block 210, each gap is adjusted in the chute 212 that permission slide block 210 that slide block 210 all is assembled in the casing 211 of no gap gear reduction unit 2 moves about, side at casing 211 inwardly offers the screw that is connected with chute 212 respectively, and all is equiped with in screw and gap adjustment slide block 210 contacted adjustment screws 213.Rely on and respectively adjust screw 213, can promote slide block 210, to realize adjusting the gear backlash of no gap gear reduction unit 2.The structure of the no gap gear reduction unit 6 in the Y direction reciprocating motion expansion link assembly and the structure of above-mentioned no gap gear reduction unit 2 are identical.The advantage of the no gap gear reduction unit of this version is easy to adjust, adjusts the precision height, helps improving cutting accuracy.

Axial plain bearing 19 can adopt commercially available standardized product HTSD-LG, and digital control system parts 15 can adopt MTC-3C.

Claims

1, a kind of portable steel cable drives numerical control cutting machine, have one group of directions X and move back and forth steel cable driving executive module, this assembly includes a micromotor, the rotating shaft of micromotor links to each other with the input of a no gap gear reduction unit, the interior rotating shaft input that the output rotating shaft of no gap gear reduction unit is raised an interior cylinder in the device by a shaft coupling and a commentaries on classics links to each other, should in gear of output end in the interior rotating shaft of cylinder be meshed with a transmission gear, this transmission gear again with in device is raised in commentaries on classics in another input end gear in interior rotating shaft of cylinder be meshed; Have one group of Y direction and move back and forth the expansion link executive module, this assembly includes a micromotor, the rotating shaft of micromotor links to each other with the input end gear of a no gap gear reduction unit, be fixed with one in the output rotating shaft of no gap gear reduction unit and transmit gear, this transmission gear is meshed with tooth bar on being connected an expansion link, expansion link is installed in to be adjusted on the support, and the expansion link two ends are equipped with and are heightened part automatically, heighten automatically the cutting gun clamper is housed again on the part; Also has a machine shell, the belt wheel trolley body that is connected mutually with it is housed in the machine shell, also be equipped with in the machine shell to be fixed on and on the belt wheel trolley body base plate complete machine sent the digital control system parts of control instruction, aforementioned directions X moves back and forth the contained micromotor of steel cable driven unit, device etc. is raised in no gap gear reduction unit and commentaries on classics, and the Y direction moves back and forth the contained micromotor of expansion link executive module, no gap gear reduction unit and adjustment support etc., all be installed on the base plate of the belt wheel trolley body in the machine shell, it is characterized in that with fastening connection piece:

A) having a longitudinal section, front and back that is in belt wheel trolley body below is

The base of shape, the left and right two ends of base bottom are fixed with the balance and stability bearing vertical with base respectively, the forward and backward two ends of balance and stability bearing are equiped with the stable swing arm of adjusting of the base that is screwed in the screw of offering on the bearing respectively, the left and right both end sides in base top is fixed with the steel cable bearing respectively, base top is flatly put a board-like line slideway that is connected mutually with base, and it is inner and pass machine shell and stretch in its and arranged on left and right sides that above-mentioned base and board-like line slideway all are in machine shell;

B) the described commentaries on classics casing of raising device is fixed on the base plate of belt wheel trolley body, the interior rotating shaft of two interior cylinders is located in respectively to change and is raised in the ball bearing of installing on the device casing, the aforementioned transmission gear that connects two interior cylinders is installed in to change and raises on the device casing, aforementionedly be equiped with electromagnetic clutch commonly used and gear of output end in the interior rotating shaft of cylinder in another, this gear of output end and is installed in the transmission gear that commentaries on classics raises on the device casing and is meshed.This transmission gear again be installed in the screw gear that changes on the screw mandrel in and be meshed, being positioned at changes the commentaries on classics screw rodb base raise the device casing and drops on the axis hole of offering on the casing, be with the sliding sleeve that is fixedly linked with the spigot nut support outside in the device casing is raised in commentaries on classics, also being equiped with on the backstay backstay that is fixed on the casing, nut rotation set on the spigot nut support is on interior commentaries on classics screw mandrel, two leading blocks also are housed on the spigot nut support, change on two interior cylinders raising device and twining a steel cable respectively in the same way, one end of these two steel cables is fixed in the place on the cylinder by the stationary gland of two interior cylinder ends respectively, and the other end passes through two leading blocks on the spigot nut support respectively, change the transition pulley of raising on the device casing through being installed in respectively then, pass a machine shell left side more respectively, right two sides are separately fixed at a base left side at last, on the steel cable bearing at right two ends;

C) described expansion link is connected mutually with the guiding rail of an axial plain bearing, the slide block of axial plain bearing then is connected mutually with adjusting support, and the Y direction moves back and forth the contained micromotor of expansion link assembly and all is connected on the adjustment support that is connected with the base plate of belt wheel trolley body with no gap gear reduction unit;

D) the board-like line slideway that is connected of base top four of floor below that are clamped in the belt wheel trolley body are between the guiding wheel that level puts, and the front side edge of board-like line slideway and back side edge are by in the annular groove of offering on the periphery of sliding two front sides guiding wheels that are embedded in the belt wheel trolley body and two rear side guiding wheels respectively, make the weighing load plate type line slideway and the base of belt wheel trolley body support, and the belt wheel trolley body under external force can be along board-like line slideway side-to-side movement, the little axle in center of two front side guiding wheels of belt wheel trolley body is connected in respectively on the base plate of belt wheel trolley body, and the little axle in center of two rear sides guiding wheels is gone up respectively sliding sleeve and one and point to two adjustment levers between the rear sides guiding wheel, these two middle parts of adjusting lever all connect by the base plate of the pin rod nut assembly and the belt wheel trolley body of top pin alive mutually, these two the other end of adjusting levers then are connected with a base plate rear side below from the belt wheel trolley body respectively and put in adjusting screw(rod) in the screw that corresponding adjustment (adjusting) lever offers, the inner of these two adjusting screw(rod)s contacts with block on the base plate that is connected in the belt wheel trolley body respectively, and these two adjusting screw(rod)s expose to that the outer end of side then is fixed with an adjusting handle respectively behind the base plate.

2, portable steel cable as claimed in claim 1 drives numerical control cutting machine, it is characterized in that, the structure that directions X moves back and forth the no gap gear reduction unit in steel cable driving executive module and the Y direction reciprocating motion expansion link executive module is, its input end gear is meshed with gear on being positioned at first gear shaft, the gear of first gear shaft itself is meshed with gear on being positioned at second gear shaft, the gear of second gear shaft itself is meshed with gear on being positioned at the 3rd gear shaft, the gear of the 3rd gear shaft itself then is positioned in the output rotating shaft, first gear shaft, the two ends of second gear shaft and the 3rd gear shaft all are set with the gap and adjust slide block, each gap is adjusted in the chute that permission slide block that slide block all is assembled in the casing of no gap gear reduction unit moves about, side at casing inwardly offers the screw that is connected with chute respectively, and all is equiped with in screw and the contacted adjustment screw of gap adjustment slide block.