CN1241956A

CN1241956A - Method for repetitively generating a sequence of prescribed linear movements of a moveable table in a machine and apparatus therefor

Info

Publication number: CN1241956A
Application number: CN 97181097
Authority: CN
Inventors: 苏阮素; 派文素
Original assignee: Standard Label Labeling System (malaysia) Co Ltd; GENERAL LABELS AND LABELLING (SINGAPORE) PRIVATE Ltd
Current assignee: Standard Label Labeling System (malaysia) Co Ltd; GENERAL LABELS AND LABELLING (SINGAPORE) PRIVATE Ltd
Priority date: 1996-10-30
Filing date: 1997-10-29
Publication date: 2000-01-19
Anticipated expiration: 2017-10-29
Also published as: GB9909828D0; GB2334908B; GB2334908A; AU4975797A; WO1998018593A1; CN1107571C

Abstract

The present invention relates to a method and apparatus for repetitively generating a sequence of prescribed linear movements of a moveable table (31) in a production or factory machine. A moving endless flexible loop (3) is mounted on two end wheels (4, 5), preferably one wheel driven controllably to drive the loop (3). Two releasable gripping mechanisms (13, 14) are attached to the moveable table (31), arranged so that part of the loop passes through each mechanism. The moving loop (3) is gripped, held and then released by mechanisms (13, 14), so moving the table (31) a prescribed distance. By actuating the mechanisms (13, 14) in a predetermined sequence, the table (31) is moved in a prescribed manner to return at the end of the cycle to its original position, and repeating the actuation sequence then repeats the prescribed table movement sequence.

Description

Make the lathe movable table that the method and the device of continuous regulation displacement of the lines take place repeatedly

Technical field

The present invention relates to cause repeatedly that the method and apparatus of continuous regulation displacement of the lines takes place the movable table of special purpose machine tool or machining tool.

Background technology

It is reported the displacement of the lines that many devices can make platen stipulate repeatedly, for example the leading screw of motor driving just can produce this effect in conjunction with the necessary control device.Equally, also available hydraulic or pneumatic mechanical linkage.

But the speed of this mechanism and acceleration are subjected to adjustability and functional restriction.In addition, main drive disk assembly often moves reciprocatingly by phased manner, and power consumption and long term wear are strengthened.

Summary of the invention

Therefore, the purpose of this invention is to provide a kind of lathe movable table that makes improving one's methods and equipment of the continuous displacement of the lines of stipulating taken place repeatedly.The transmission device of this equipment is with almost constant speed running, and its inertia load mainly is the inertia force that movable table and tote thereof are quickened.

According to the present invention, make the lathe movable table that the equipment of continuous regulation displacement of the lines take place repeatedly, wherein workbench is limited to and can only moves along horizontal line, comprise a flexible circular thing, it is installed in that two rotating ends wheels are gone up and can not slippage, simultaneously can be around the motion of these two end wheels, these two end wheels are arranged with the movable table branch.The translational surface of annulation is accurately parallel with the workbench track route, and movable table connects two or more releasable clamp mechanism, and each mechanism can clamp the movable part of ring, clamping, unclamp then.Annulation respectively has a minimum releasable clamp mechanism on two sections between the rotating end wheel.According to the present invention, the method that continuous regulation displacement of the lines takes place the lathe movable table is repeatedly comprised: use the said equipment, utilize that two or more can unclamp that in the clamp mechanism one clamps, clamping, unclamp any movable parts that are positioned at the ring in the middle of the two rotatable end wheels then, thereby make workbench unique moving take place along its fixed course.When one can unclamp the clamp mechanism clamping along ring that a direction of motion is moved, workbench moved with a direction, and when another can unclamp the ring that the clamp mechanism clamping moves in opposite directions, workbench moved in opposite directions.Regulation worktable displacement in proper order promptly takes place in each releasable clamp mechanism perseveration one by one.

The invention also discloses correspondence and do further improvement with the method and the parts of the said equipment.

The equipment that obtains not only more economical than the existing miscellaneous equipment that equifinality is arranged, and find in practice, even this equipment makes the positioning accuracy of workbench and the repeatable accuracy can not be better, at least also can be the same with miscellaneous equipment.

Specific embodiment

Now only by embodiment, and meet two specific embodiments of present device with reference to accompanying drawing explanation, in the accompanying drawing:

Fig. 1 is the side view of an embodiment;

Fig. 2 is the end view drawing of the equipment among Fig. 1, and annulation 3 and feed shaft 1,2 parts are cut open, and the Assembly part of feed shaft 1,2 and sprocket wheel 5 is omitted;

Fig. 3 is the side view of another embodiment;

Fig. 4 is the end view drawing of equipment among Fig. 3,

annulation

47,48, and

sprocket wheel

41,42,43,44 and feed shaft 1,2 parts are cut open, omit the Assembly part of feed shaft 1,2 and

sprocket wheel

41,42,43,44.

Rolling chain 3 is around sprocket wheel 4,5 motion among Fig. 1, and sprocket wheel 4,5 is contained on the lathe and with movable table 31 and separate, workbench 31 along two feed shafts 1,2 with almost horizontal direction slip.One in these two sprocket wheels 4 or 5 is equipped with the adjustable transmission device (not shown) that is used for chain drive-belt 3.Two

releasable clamp mechanism

13,14 are connected on the workbench 31, separately facing to one in two strands of chains between two sprocket wheels separately.All there are two roughly

smooth packing rings

6,7 or 15,16 in each

mechanism

13 or 14, they have two reverse gripping surfaces that face one another, respectively across the both sides of chain 3, (two pairs are shown in Fig. 1: 9,10 and 18,19 on four parallel draw bars to be fixed near its four angles or the angle for each

mechanism

13 or 14

innermost packing rings

6 or 15, two pairs are shown in Fig. 2: 9,11 and 18,20, remaining is not shown on the figure),

other packing ring

7 or 16 can slip into along four pull bars at its four angles.These four pull bars are also controlled the passage of chain 3, make it to remain in the passage that gripping surface limited by two planes, pull bar place of the plane, two pull bar places of chain one side, chain opposite side and packing

ring

6,7 or 15,16.These four pull bars are fixed to its other end on the housing of

pneumatic actuator

8 or 17, and pneumatic actuator then is connected on the movable table 31.

Pneumatic cylinder

8 or 17 power transmission shaft are attached on nearer packing ring 7 or 16.Signal system lead, sensor, timer reach the air conduit that leads to pneumatic cylinder and all are not shown on the figure.

The mechanism 13 of shown below is in " unclamping " state, and at this moment, packing ring was opened in 6,7 minutes, allows motion chain 3 freely to pass through.Shown in the top mechanism 14 be in " clamping " state, at this moment pneumatic actuator 17 makes a packing ring 16 shift near another packing ring 15, and chain 3 is clamped and can not be slided, thereby make workbench 31 by from right to left direction motion among Fig. 1, because this is that chain 3 is by the direction of motion of mechanism's 14 retained parts.The adjustment of controlled transmission device is leaned in the adjusting of the speed of table, thereby makes a driven at such angular rates to require in sprocket wheel 4 or 5.

When mechanism 14 is pushed and after chain 3 is unclamped, movable table just stops because of frictional force or other resistance.But no matter after before stopping still being, by promoting one or another

mechanism

13 or 14, workbench still can further move along all directions.

In having stipulated an embodiment of sequence of motion, workbench 31 by a promotion two

mechanisms

13 or 14, moves one section to set a distance along a direction from original position, and its speed is by the speed control of chain 3.Lean on the promotion of another

mechanism

14 or 13 then and get back to the home position, workbench 31 is returned identical distance with speed as before.Repeat to promote

clamp mechanism

13,14, the working table movement order of present embodiment regulation is just carried out repeatedly.

Fig. 3 and Fig. 4 illustrate device of the present invention, and its two annulations (roller chain) 47,48 are installed on the sprocket wheel 41,42,43,44.The speed motion of each annulation to differ from one another, the operation of above-mentioned

unclamped clamp mechanism

13,14 can make workbench 31 move with double speed.When an annulation is clamped, be a speed forward, when another annulation is clamped, be another inverted speed.Like this, as embodiment, workbench just can be higher than forward the speed of speed and get back to its initial start position, thereby accelerates the cycle of operation of device.

Claims

1. method that makes the lathe movable table that continuous regulation displacement of the lines take place repeatedly, it is characterized in that, in the releasable clamping device one clamps flexible motion annulation by two or more with its part between two rotatable end wheels, clamping, unclamp then, these two ends are taken turns the annulation that is arranged with the movable table branch and installs on it and can not be done relative slip, thereby annulation can be rotatablely moved at a predetermined velocity, clamping device is connected to workbench, it can only be moved along the horizontal line parallel with the strictness of flexible circular thing surface, therefore, workbench can limit route along this and do unique moving, if a part of annulation that releasable clamp mechanism clamping is moved along this direction, then above-mentioned motion is carried out along this direction, otherwise, if another can unclamp the clamp mechanism clamping along the annulation that moves in the other direction, then move and carry out in the other direction with this, each releasable clamp mechanism is moved repeatedly, i.e. action one by one, make workbench sequential movements in accordance with regulations, the result, workbench is got back to its initial position, thus, the repetition action that can unclamp clamp mechanism can make the working table movement reiteration carry out.

2. the method for claim 1, it is characterized in that, there is one or more guiding device to link movable table or respectively can unclamp on the clamp mechanism, therefore greatly limited the moving conduit of flexible circular thing, each can unclamp, and clamp mechanism all can be clamped in this passage in full time, clamping or unclamp the movable part of this annulation.

3. method as claimed in claim 1 or 2, it is characterized in that, can unclamp at each all has two relative gripping surfaces in the clamp mechanism, at least one gripping surface can move perpendicular to the annulation movable part direction of motion on the edge between two gripping surfaces, therefore, and when clamping when the action of two gripping surfaces, the movable part of annulation is clamped, clamping and can not moving, and when split movement took place for their, the movable part of annulation loosened, and left gripping surface and moved.

4. method as claimed in claim 3, it is characterized in that, the guiding device of restriction annulation movable part passage still limits a gripping surface and makees instrument perpendicular to the movable part direction of motion of the ring between two gripping surfaces, also is simultaneously that another gripping surface is fixed to this guiding device and can not moves and can loosen this guiding device limiter on the clamp mechanism and anti-another gripping surface here vertically leaves the instrument of annulation by being connected to each.

5. as claim 1,2,3 or 4 described methods, it is characterized in that, one during two rotatable ends are taken turns by an adjustable transmission device driven rotary, other end wheel is then driven by the movable part of annulation, like this, when the annulation movable part was clamped on the unclamped clamp mechanism of movable table, the flexible circular thing of transmission made workbench move with similar speed at a predetermined velocity.

6. as claim 1,2,3,4 or 5 described methods, it is characterized in that, two or more flexible circular things can be provided, each annulation is installed on the rotatable end wheel and can not slides, and can control transmission to doing around rotatable end wheel, therefore when the movable part of one of them ring is connected to the unclamped clamp mechanism clamping of movable table by one, each ring can encircle speed motion inequality with other one or several, thus the speed motion that workbench can be reached with another ring that is different from another the unclamped clamp mechanism clamping that is fixed to movable table.

7. device that makes platen that continuous regulation displacement of the lines take place repeatedly, this workbench is tied and can only moves along the route of approximate horizontal, it is characterized in that, the flexible circular thing is installed on two rotating end wheels and can not slides relatively, and rotate around this end wheel, this two ends wheel is arranged with the movable table branch, and the annulation movable part is accurately parallel with the working table movement route; Two or more clamp mechanism that can loosen are connected on the movable table, each mechanism can do the movable part of ring and clamp, clamping, unclamps then, and every section of mobile section of two rings between the rotatable end wheel preferably has at least one releasable clamp mechanism.

8. device as claimed in claim 7, it is characterized in that, one or more guiding device is fixed to movable table or each and can unclamps on the clamp mechanism, and this guide can make that the passage of the movable part of flexible circular thing constrains in that each can unclamp that clamp mechanism can be clamped it, in clamping or the passage that unclamps.

9. as claim 7 or 8 described devices, it is characterized in that, each releasable clamping device all has two relative gripping surfaces, have at least in them a gripping surface can along and two gripping surfaces between the perpendicular direction of the moving direction that encircles move, and have thrust unit to drive and these two gripping surfaces of clamping near so that clamp movable part with holding ring, and two gripping surfaces are separated to loosen annulation, made it to leave the gripping surface motion.

10. device as claimed in claim 9, it is characterized in that, the guiding device that contains annulation movable part path can also make a gripping surface be restricted and can only be along taking exercises perpendicular to the movable part direction of motion of encircling between two gripping surfaces, and in each releasable clamp mechanism, make another gripping surface be fixed on the guiding device or the direction that is only limited to vertically to leave annulation moves by being fixed to limiter on the guiding device.

11. as claim 7,8,9 or 10 described devices, it is characterized in that, one during two rotatable ends are taken turns is driven by annulation, other end wheel is by controlled transmission device transmission, the flexible circular thing is rotated, therefore, when the annulation movable part is connected to the unclamped clamp mechanism clamping of movable table by one, workbench is moved with similar speed.

12. as claim 7,8,9,10 or 11 described devices, it is characterized in that, two or more flexible circular things, each is contained in rotatable end wheel to last and can not slide relatively, annulation is also taken turns doing adjustable transmission around end, therefore, each annulation can be different separately speed motion, and when a ring is connected to the unclamped clamping device clamping of movable table by one, workbench is just with the different speed motion of another unclamped clamping device clamping speed that another annulation is obtained of being connected to movable table, each rotatable end wheel between two each sections that move section of motion annulation at least one releasable clamp mechanism is preferably all arranged.

13., it is characterized in that described device is in structure and arrange roughly the same with this specification and the described content of accompanying drawing as any one described device in the claim 7,8,9,10,11 and 12.

14. it is, it is characterized in that this method was made up of several steps, and roughly the same with this specification and the described content of accompanying drawing as any one described method in the above-mentioned claim.