CN1413785A

CN1413785A - Clamping mechanism for columnar article

Info

Publication number: CN1413785A
Application number: CN 02108445
Authority: CN
Inventors: 铃木秀男
Original assignee: HOKKAI MANUFACTURING Co Ltd
Current assignee: HOKKAI MANUFACTURING Co Ltd
Priority date: 2001-10-23
Filing date: 2002-03-29
Publication date: 2003-04-30
Also published as: JP2003127010A

Abstract

The present invention makes an entirety of a grasping mechanism enables can be opened/closed freely and can be operated even relating to a columnar object of which the inapplicable large diametral flange in an usual way. The grasping mechanism for the columnar object comprises a turnable basic plate arranged within the case body, three pieces of pivotal pins provided on this turnable basic plate, a sub-layer having the rear end thereof supported in a pivotal state with these pivotal pins, three pieces of main levers having each rear end thereof supported respectively in the pivotal state with ah anchor pin, the member for grasping a tip end on each tip end of this main lever supported turnably and in the pivotal state and the tip end of the above sub-lever coupled to the substantially intermediate position of the above main lever in the pivoted state. This grasping mechanism for the columnar object is characterized by dividing a case body and a turnable basic body into two pieces while avoiding the mounting position of an anchor pin, by mounting an openable axial pin in the divided end of one side in the case body, by mounting a locking member used to fix the case body divided into two pieces integrally near the divided end of the other side in the case body.

Description

The clamping device of column

Technical field

The present invention relates to the clamping device of column, relate to this clamping device itself in more detail and can open and close freely column clamping device, the clamping device of this column can be applicable to the wide region of the column from large diameter column to minor diameter, and its clamping is simple to operate, reliable, can also feel relieved reliably simultaneously, its clamping effect is also perfectly safe.Moreover the so-called column in this specification comprises the cylindrical body of the circular pipe of picture and two kinds of implications of solid barred body of circular cross section.

Technical background

Always, in the chuck of lathe or the fields such as column clamper in the pipe cutting machine,, using the clamping device of column with various forms for the column of stable holding as processed body.

; though in clamping device, be provided with and compress column, directly clamp the front end clamping components of column; but because can't guarantee to strengthen the stroke amplitude of this front end clamping components when flexible in the prior art; so existing the scope of the diameter dimension of the column that it can be corresponding, the result narrows down; and problem such as clamping operation is also very complicated, and the clamping effect is not strong yet.

And then, always,, come correspondence by selecting that only annex is installed, so need a lot of workloads aspect the preparation of annex because prepare a plurality of annexes that can distinguish correspondence in order to adapt to the big column of diameter dimension.

In order to solve such problem, this part applicant has proposed the clamping device of the column of patent disclosure 2001-225214.

According to this patent disclosure 2001-225214, size that then can the corresponding column diameter dimension in wide cut degree ground, clamping operation and feel relieved simple to operately and has improved the clamping effect.

, handling the occasion that the end forms the column of bead, be envisioned that, so can't similarly use clamping device with column not with bead because this bead card is hung on the through hole that column passes that is used for of clamping device.

Summary of the invention

The invention provides a kind of clamping device of column, clamping device integral body constitutes and can open and close freely, even for the column that is formed with large diameter bead that can't be suitable for usually, also can use this clamping device simply by opening and closing this clamping device.

As the means that solve problem of the present invention, the clamping device of the described column of claim 1 at first, be to constitute housing by pair of frames plate with the through hole that can pass column, has the through hole that can pass column in this enclosure interior, and the rotational substrate that configuration can along the circumferential direction be rotated, on the position of the circumferencial direction trisection of this rotational substrate, three hinged pins are set, rear end by the hinged shape of these hinged pins ground supporting auxiliary lever, on the position of the circumferencial direction trisection of aforementioned pair of frames plate, three steady pins are installed on each frame plate, each rear end by three main levers of each steady pin difference hinged shape ground supporting, the hinged freely shape of rotation ground supports the front end clamping components of the clamping column that can whole pressurize in linkage on each front end of this main lever, the front end of aforementioned auxiliary lever is articulated and connected in the roughly centre position of aforementioned main lever, it is characterized in that, avoid the installation site of steady pin and housing and rotational substrate are divided into two, divide cut node to install in housing one side and open and close pivot pin, near the housing opposite side divides cut node, install the integrally fixing locking component of the housing that is divided into two.

In addition, the clamping device of the described column of claim 2 is the clamping device of column as claimed in claim 1, it is characterized in that, with the next hinged shape twelve Earthly Branches brought forward end clamping components of the bearing state of double base.

And then, the clamping device of the described column of claim 3 is the clamping device of column as claimed in claim 1 or 2, it is characterized in that, the front end clamping components is by a pair roller made from flexible material and set blade for and be positioned at the locational disc cutting knife of shrinking back a little from the outer surface of this roller and constitute.

Secondly, the clamping device of the described column of claim 4 is the clamping device of the column described in the claim 1 to 3 any one, it is characterized in that, on housing top the operation handwheel that rotational substrate is rotated is set, the restorable ratchet mechanism of the rotational substrate portion that makes is installed in lower housing portion.

Require the clamping device of 1 described column according to aforesaid right, adopt organic linkage to make to guarantee and strengthen the stroke amplitude of front end clamping components when flexible, the clamping operation and the centering operation of column also become simple, and then the clamping effect also can improve, such clamping device has following feature, promptly, even have the occasion of bead at column, also can guarantee broad peristome, this column is come in and gone out in clamping device reliably from this peristome by opening housing and rotational substrate.The peristome of temporarily opening can lean on locking component to keep locking and can accident not opening after introducing column and closing once more.

And then, the clamping device of the described column of claim 2 since its front end clamping components with have stability double base the hinged shape of bearing state supporting, so compare with the front end clamping components of single bearing state of prior art, the contact condition of it and column is stable, contact pressure improves, and clamping effect as a result also has feature safe against all possibilities.

In addition, the clamping device of the described column of claim 3 is the occasion of pipe at column (processed body), has to can be used as the feature that pipe cutting machine utilizes.

Secondly, the clamping device of the described column of claim 4, owing to be provided with the operating handle that rotational substrate is rotated on housing top, in lower housing portion ratchet mechanism portion is installed, so carry out the rotation of rotational substrate simply by the operation handwheel, carry out the reinstatement of rotational substrate simply by ratchet mechanism portion, therefore have the feature that the use of clamping device becomes easy.

Description of drawings

Fig. 1 is that the master who closes the housing state of the clamping device according to the present invention looks perspective view.

Fig. 2 is that the master who opens the housing state of the clamping device according to the present invention looks perspective view.

Fig. 3 is the front view of the rotational substrate of clamping device according to the present invention.

Fig. 4 be expression according to the present invention clamping device close the vertical profile rearview (clamp position of large diameter column) of the internal mechanism of housing state.

Fig. 5 be expression according to the present invention clamping device close the vertical profile rearview (clamp position of the column of minor diameter) of the internal mechanism of housing state.

Fig. 6 is the A-A line cutaway view among Fig. 4.

Fig. 7 is the B-B line cutaway view among Fig. 4.

Fig. 8 is the C-C line cutaway view among Fig. 4.

The specific embodiment

Though describe an embodiment of the clamping device of column of the present invention below in detail, the present invention is not limited thereto.

At first, based on Fig. 1 to Fig. 8 the present invention is described, Fig. 1 is that the master that clamping device is closed the state of housing looks perspective view, Fig. 2 is that the master that clamping device is opened the state of housing looks perspective view, Fig. 3 is the front view of rotational substrate, Fig. 4 is the vertical profile rearview (clamp position of large diameter column) that the internal mechanism of housing state is closed in expression, Fig. 5 is the vertical profile rearview (clamp position of the column of minor diameter) that the internal mechanism of housing state is closed in expression, Fig. 6 is the A-A line cutaway view among Fig. 4, Fig. 7 is the B-B line cutaway view among Fig. 4, and Fig. 8 is the C-C line cutaway view among Fig. 4.

The present invention arranges pair of frames plate 1a, 1b parallel shape ground, between these frame plates 1a, 1b, set up peripheral frame 2 and make it whole integrated and constitute housing 3, near the substantial middle of frame plate 1a, 1b, run through to be provided with making column 4 pass through hole 5a, the 5b of usefulness.

Though the shape of the shape of frame plate 1a, 1b and through

hole

5a, 5b is as shown in the figure discoid preferably in general, can certainly be other shapes.

In addition, though column 4 is generally the elongated thing of tubular or solid bar-shaped circular cross section,, useless giving unnecessary details, elongated thing also can be suitable for even the section beyond circular is polygon etc.

Secondly, in aforementioned housing 3, rotational substrate 6 can be set rotationally in housing 3.On this rotational substrate 6, also form the through hole 6a that can pass column 4.The rotating operation of rotational substrate 6 can lean on suitable mechanism to carry out, for example at the top of housing 3 fitting operation handwheel 7, on the hand wheel shaft 7a of this operation handwheel 7, gear 8 is installed, this gear 8 and the perisporium external screw thread 6b of rotational substrate 6 are meshed, rotating operation by operation handwheel 7, via hand wheel shaft 7a and gear 8, perisporium external screw thread 6b is rotated, the result rotates rotational substrate 6.

The rotation amplitude of rotational substrate 6 (angle of rotation) in illustrated embodiment, is limited its rotational angle by the angle of rotation of adjusting operation handwheel 7 though can freely design.

As the method that rotational substrate 6 is rotated, except that above-mentioned form, utilize in addition pinion and rack method, utilize the method for worm gear etc., in occasion with these methods, because do not operate the backward rotation of handwheel 7, the feature that reverses so the operator wheel has the intention can not run counter to.

In addition, in the present invention, because ratchet mechanism portion is installed near the bottom of housing 3, so rotational substrate 6 is held at the state that turns an angle, one removes the arrested state of ratchet 16 with the ratchet teeth portion 6c of rotational substrate 6 of this ratchet mechanism portion, and rotational substrate 6 returns to regard to the effect by back-moving spring 17 quickly and begins to rotate preceding state.Moreover label 18 is that ratchet 16 is pressed against the spring that presses that ratchet teeth portion 6c uses.

Basic comprising at this explanation clamping device on rotational substrate 6, is provided with three hinged

9a, 9b, 9c on the position of circumferencial direction trisection, by the rear end of these hinged pin 9a, the hinged shape of 9b, 9c ground supporting

auxiliary lever

10a, 10b, 10c.

In order to form the formation position of these hinged

9a, 9b, 9c on the inner side in the possible range on rotational substrate 6, in the embodiments of figure 3, on the inside portion of rotational substrate 6, form outstanding the heave 15a of portion, 15b, 15c.Whereby, give prominence on the inside portion of heaving the 15a of portion, 15b, 15c rotational substrate 6 in addition and can guarantee broad space, existence by this broad space, other linkages can not be subjected to the interference of rotational substrate 6 and successfully move, and the result produces the feature of the stroke amplitude in the time of can guaranteeing to strengthen front end clamping components described later flexible.

In addition, on the position of the circumferencial direction trisection of aforementioned pair of frames plate 1a, 1b, three steady pin 11a, 11b, 11c are installed on each frame plate 1a, 1b, and each rear end of three

main lever

12a, 12b, 12c by these steady pins 11a, 11b, be supported on each frame plate 1a, 1b the hinged shape of 11c.

On the other hand, on each front end of these

main levers

12a, 12b, 12c, rotate and supporting front

end clamping components

13a, 13b, 13c freely hinged shape.

These front

end clamping components

13a, 13b, 13c constitute and can totally link and pressurize clamping column 4.

And then the front end of aforementioned

auxiliary lever

10a, 10b, 10c is articulated and connected in the roughly centre position of

main lever

12a, 12b, 12c via axle 14a, 14b, 14c.

If use this mechanism, at first, make column 4 pass each through

hole

5a, 5b, the 6a of frame plate 1a, 1b and rotational substrate 6 according to above-mentioned formation.

Here, be installed on the occasion of column 4 at bead 4a etc., member 19 at first unlocks, to open and close pivot pin 20 be that the fulcrum edge is divided into two line 21 housing 3 and rotational substrate 6 be divided into two (with reference to Fig. 2), from the introducing opening of opening commodiously 22 target column 4 is introduced each through

hole

5a, 5b, 6a, the introducing back is housing 3 that is divided into two and rotational substrate 6 recoveries and both are locked fixing by locking component 19.Like this, even large diameter column 4 also can be contained in clamping device of the present invention reliably.

After like this column 4 being contained in clamping device, if by suitable drive source operation handwheel 7 is rotated along the direction of arrow among Fig. 1, then rotational substrate 6 rotates ormal weight in housing 3.If rotational substrate 6 rotates, then because the hinged

9a, 9b, the 9c that are located on the rotational substrate 6 move, so

auxiliary lever

10a, 10b, 10c are drawn out along same direction.

After

auxiliary lever

10a, 10b, 10c were drawn out along above-mentioned direction,

main lever

12a, 12b, 12c were furthered by auxiliary lever via axle 14a, 14b, 14c.At this moment because the rear end of

main lever

12a, 12b, 12c by steady pin 11a, 11b, be supported on frame plate 1a, 1b the hinged shape of 11c, so on this position the motionless state of maintenance.

As mentioned above, since the rear end of

main lever

12a, 12b, 12c become with the motionless state of housing 3 all-in-one-pieces (but because only supporting hinged shape, so it sways is freely), so each main lever is a fulcrum with steady pin 11a, 11b, 11c, move to the state of Fig. 5 from the state of Fig. 4.

Move as mentioned above by

main lever

12a, 12b, 12c, three front

end clamping components

13a, 13b, 13c that are supported on each front end of main lever move and guarantee to clamp clamping column 4 hinged shape.

Hinged pin 9a of the present invention, 9b, 9c are formed on the position of the circumferencial direction trisection of rotational substrate, main lever 12a, 12b, the 12c of same size are installed in its place ahead, because

auxiliary lever

10a, 10b, 10c also form by same size, so three front

end clamping components

13a, 13b, 13c are contacted with the outer peripheral face of column 4 with the pressure of equalization, the centering of column 4 as a result correctly and is automatically carried out.

In addition, the clamping effect of front

end clamping components

13a, 13b, 13c is significant, can obtain firm clamping effect.

Moreover, form methods such as annular knurl by surface at the front end clamping components, skidproof effect is improved, can realize clamping effect more reliably whereby.

Then, if the ratchet shown in Fig. 5 16 is thrown off from ratchet teeth portion 6c, then owing to the effect of rotational substrate 6 by back-moving spring 17 restores to the original state, so auxiliary lever or main lever move by the order opposite with above stated specification, the result can remove the front end clamping components from the clamp position of column 4.

In addition, as shown in Figure 6, constitute front

end clamping components

13a, 13a, with the two ends, the left and right sides of this swing roller of the hinged shape of double base state ground supporting etc. if wait with swing roller, then compare with single clamping device that supports of prior art, the stability of its clamping face is excellent especially.

And then, clamping device of the present invention, if above-mentioned

swing roller

13a, 13a are by flexible materials such as polyurethane rubbers and the roller that forms, and set disc cutting knife 23 for blade and be positioned at from the position that the outer surface of this roller is shunk back a little, then because when front end clamping components 13a is contacted with column 4 with slowly clamping, the blade 23a of discoid cutting knife 23 entad is contacted with column shape, so can obtain feeling relieved and the pipe cutting machine of stable holding.

Moreover in Fig. 4, roller shown in the label 24 is the guide roller of the recess that is provided with on perisporium, is used in order not rotate rotational substrate 6 with crooking the inner peripheral portion of rotational substrate being taken in this recess and being guaranteed stable rotation.

And then the roller shown in the label 25 is the turned position restriction roller that the rotation of determining rotational substrate 6 position when returning is used.

Thus, if with the clamping device of column of the present invention, then because adopt front end clamping structure Part can be in through hole flexible linkage significantly, so can the corresponding column in wide cut degree ground The size of diameter dimension except not needing respectively corresponding annex etc., exists the folder of column Hold operation and centering operation and become simple, its clamping effect such as also improves at the good effect.

In addition, invention claimed in claim 2 is because with the hinged shape twelve Earthly Branches of double base state brought forward The end clamping components is stablized the effect that the clamping effect is high so have with the contact condition of column.

And then it is the occasion of pipe that invention claimed in claim 3 has at column, protects conduct The effect that pipe cutting machine utilizes.

And then invention claimed in claim 4 is because setting is turned to rotational substrate on housing top Moving operation handwheel is installed ratchet mechanism section in lower housing portion, so can be simply by rotating behaviour Make the hand wheel rotating substrate, because the reinstatement of rotational substrate leans on ratchet mechanism section to carry out simply, Therefore has easy-to-use effect.

Claims

1. the clamping device of a column, be to constitute housing by pair of frames plate with the through hole that can pass column, has the through hole that can pass column in this enclosure interior, and the rotational substrate that configuration can along the circumferential direction be rotated, on the position of the circumferencial direction trisection of this rotational substrate, three hinged pins are set, rear end by the hinged shape of these hinged pins ground supporting auxiliary lever, on the position of the circumferencial direction trisection of aforementioned pair of frames plate, three steady pins are installed on each frame plate, each rear end by three main levers of each steady pin difference hinged shape ground supporting, the hinged freely shape of rotation ground supports the front end clamping components of the clamping column that can whole pressurize in linkage on each front end of this main lever, the front end of aforementioned auxiliary lever is articulated and connected in the roughly centre position of aforementioned main lever, it is characterized in that:

Avoid the installation site of steady pin and housing and rotational substrate are divided into two, divide cut node to install in housing one side and open and close pivot pin, near the housing opposite side divides cut node, install the integrally fixing locking component of the housing that is divided into two.

2. the clamping device of column according to claim 1 is characterized in that: with the next hinged shape twelve Earthly Branches brought forward end clamping components of the bearing state of double base.

3. the clamping device of column according to claim 1 and 2 is characterized in that: the front end clamping components is by a pair roller made from flexible material and set sword for and be positioned at the locational disc cutting knife of shrinking back a little from the outer surface of this roller and constitute.

4. according to the clamping device of the column described in the claim 1 to 3 any one, it is characterized in that: the operation handwheel that rotational substrate is rotated is set on housing top, the restorable ratchet mechanism of the rotational substrate portion that makes is installed in lower housing portion.