CN213560605U - Clamp for cutting pipe fitting and corresponding cutting equipment - Google Patents
Clamp for cutting pipe fitting and corresponding cutting equipment Download PDFInfo
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- CN213560605U CN213560605U CN202022283491.9U CN202022283491U CN213560605U CN 213560605 U CN213560605 U CN 213560605U CN 202022283491 U CN202022283491 U CN 202022283491U CN 213560605 U CN213560605 U CN 213560605U
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Abstract
The utility model discloses an anchor clamps and corresponding cutting equipment for being directed at pipe fitting cuts. This anchor clamps include: first pipe fitting stiff end, second pipe fitting stiff end and rotary driving device, first pipe fitting stiff end and second pipe fitting stiff end are used for the both ends of fixed target pipe fitting respectively, rotary driving device with first pipe fitting stiff end fixed connection, and then drive first pipe fitting stiff end and target pipe fitting are rotatory, the second pipe fitting stiff end will the pipe fitting is rotatably fixed above that, first pipe fitting stiff end with at least one in the second pipe fitting stiff end is right during the fixed of target pipe fitting, make it have predetermined horizontal activity space. The utility model discloses an anchor clamps can realize the location centre gripping to the wear-resisting interior tubular product that has the non-standard structure, when realizing that the pipe fitting is fixed, guarantees that the pipe fitting smoothly rotates in order to realize the accuracy and the smoothness nature of cutting between anchor clamps, and the straightness that hangs down of cut surface and pipe center line when guaranteeing laser cutting.
Description
Technical Field
The invention relates to the field of machinery, in particular to a clamp for cutting a pipe fitting and corresponding cutting equipment.
Background
The double-layer wear-resistant inner pipe of the concrete conveying pipe is a high-hardness and high-wear-resistant alloy thin-wall steel pipe, the yield is high, roundness and cylindricity errors are easy to generate after heat treatment, part of the pipe needs to be cut short for use, the cutting process adopts laser cutting, the hardness of materials is not reduced, the cutting end face is required to be perpendicular to the axis center line, and the change range of the cutting length is large. The conventional construction of the tube is shown in figure 1.
As shown in fig. 2, the center line of the tube or shaft is a virtual straight line, and is generally defined as a line connecting the center points of the two end surfaces, i.e., the center line of the tube (shaft). In order to ensure the normal use of the pipe fitting, the pipe fitting is cut to be perpendicular to the central line of the pipe as far as possible, however, the pipe fitting often has the problems of roundness and cylindricity errors, once one end of the pipe fitting is fixed tightly, the other end of the pipe fitting is often deviated to one side due to the roundness errors, and if the two ends of the pipe fitting are fixed simultaneously, the pipe fitting is rotated during cutting due to the roundness errors, so that a problem that a clamp at the two ends is greatly stressed (in common terms, strength exists) is caused, and therefore, the pipe fitting is ensured to be rotated along the field during cutting, and the pipe fitting is difficult to be substantially perpendicular to the central line of the pipe. In the prior art, a clamping form or a simple change structure of a three-jaw chuck and a center frame is generally adopted, and clamping and positioning cannot meet the special requirements of large perpendicularity between a cut surface of a workpiece with a large error and a pipe center line and large change range of cutting length.
To the pipe fitting that has the circularity error, there is not suitable fixing device yet at present to realize that the pipe fitting is fixed, guarantees that the pipe fitting is in the same direction as the accuracy and the smoothness nature of field rotation in order to realize the cutting between anchor clamps, guarantees the straightness that hangs down of cutting terminal surface and axial centerline to current mode also can not adapt to the big special requirement of cutting length variation range.
Disclosure of Invention
In view of the above problem, the utility model provides a when can realizing that the pipe fitting is fixed, guarantee the straightness that hangs down of cutting terminal surface and axial centerline, guarantee the pipe fitting between anchor clamps in the same direction as the field rotation in order to realize the accuracy and the pipe fitting cutting jig of smoothness nature of cutting.
Particularly, the technical scheme of the utility model as follows:
a clamp for cutting a pipe, the clamp comprising: first pipe fitting stiff end, second pipe fitting stiff end and rotary driving device, first pipe fitting stiff end and second pipe fitting stiff end are used for the both ends of fixed target pipe fitting respectively, rotary driving device with first pipe fitting stiff end fixed connection, and then drive first pipe fitting stiff end and target pipe fitting are rotatory, the second pipe fitting stiff end will target pipe fitting rotatably fixes on it, and, first pipe fitting stiff end with at least one in the second pipe fitting stiff end is right target pipe fitting's the fixing of fixing to elastic fixation.
Preferably, the first pipe fixing end is provided with a chuck and a first fixing frame, the chuck is rotatably fixed on the first fixing frame through elasticity or a movable piece, and the second pipe fixing end is provided with a second fixing frame, and the second pipe fixing end is rotatably fixed on the fixing frame of the second pipe fixing end through three transversely arranged self-aligning bearings.
Preferably, the first pipe fitting fixing end is fixed by a three-jaw chuck, the chuck is clamped and fixed in the middle and fixed on a corresponding mounting frame through at least three self-aligning bearings, the outer ring of each self-aligning bearing abuts against the outer ring of the chuck, the inner shaft of each self-aligning bearing is transversely fixed on the fixing frame, the second pipe fitting fixing end is fixed with the target pipe fitting through at least three self-aligning bearings, the outer ring of each self-aligning bearing abuts against the outer ring of the target pipe fitting, and the inner shaft of each self-aligning bearing is transversely fixed on the fixing frame.
Preferably, the inner shaft of at least one of the self-aligning bearings at the fixed end of the second pipe fitting is fixed on the corresponding fixed frame through an elastic piece, and the rest of the self-aligning bearings are directly fixed on the fixed frame.
Preferably, a slide is installed below at least one of the first and second pipe fixing ends so that the pipe fixing end can be close to or far from the other pipe fixing end along the slide.
Preferably, the rotation driving device comprises a driving motor and a driving shaft, the driving shaft is connected with the fixed end of the first pipe fitting through an elastic connecting piece, and the rigidity of the elastic connecting piece in the axial direction is far greater than that in the tangential direction.
Preferably, a "Z" shaped hinge is embedded inside the elastic connecting element, two corners of the "Z" shaped hinge are right angles, and the "Z" shaped hinge has freedom only in the plane of the "Z" shaped hinge (i.e. the tangentially connected ball-and-socket joint between 101 and 106 in the embodiment, is used for accurately transmitting the rotation movement).
Preferably, a laser cutting device is disposed on a side of the fixed end of the second pipe fitting, facing the target pipe fitting.
On the other hand, the utility model provides a wear-resisting pipe fitting cutting equipment, a serial communication port, wear-resisting pipe fitting cutting equipment includes anchor clamps and cutting equipment, cutting equipment set up in one side of anchor clamps.
It should be noted that in this embodiment, "laterally movable" and "movably fixed" refer to that when one side is stressed due to roundness or other irregularities of the pipe while the target pipe is maintained at its position, at least one of the two sides has a certain buffer space, for example, by the elastic arrangement in the embodiment, so that it can move laterally. Preferably, both sides all have certain elasticity or activity space, avoid appearing one side and press from both sides the circumstances of opposite side nose.
The pipe fitting that utility model is aimed at is rough machining pipe fitting or is called non-standard pipe fitting (the pipe fitting of the even thickness and the circularity of nonideal state), preferably wear-resisting pipe fitting.
Technical effects
The utility model discloses an anchor clamps for cutting wear-resisting pipe fitting can realize the self-align centre gripping to the wear-resisting interior tubular product that has the non-standard structure, when realizing that the pipe fitting is fixed, guarantees that the pipe fitting smoothly rotates in order to realize the accuracy and the smoothness nature of cutting between anchor clamps, the straightness that hangs down of cut surface and pipe center line when guaranteeing laser cutting.
In addition, in preferred implementation mode, set up the slide in one side stiff end lower part for can adapt to cutting length variation on a large scale, reach the technical requirement of product.
Drawings
FIG. 1 is a schematic view of a target tubular;
FIG. 2 illustrates various portions of a target tubular;
fig. 3 is a schematic front view of a cutting jig for pipe according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a left end face of the cutting jig for pipe according to the embodiment of the present invention;
fig. 5 is a schematic view of a right end face structure of the cutting jig for pipe in the embodiment of the present invention.
Reference numerals:
the driving device comprises a left end face 10, a left end face circle center 11, a virtual center line 12, a right end face 13, a right end face circle center 14 driving spindle 101, a rubber elastic element 102, a hinged rod 103, a left mounting plate 104, a left self-aligning bearing 105, a three-jaw chuck 106, a pipe fitting 107, a right mounting plate 108, a spring 109, a right self-aligning bearing 110, a laser head 111 and a right central point O2A left end section 112, a right end section 113, a left end center point O1
Detailed Description
In this embodiment, pipe fitting cutting jig includes first pipe fitting stiff end, second pipe fitting stiff end and rotation driving device, first pipe fitting stiff end and second pipe fitting stiff end are used for the both ends of fixed target pipe fitting respectively, rotation driving device with first pipe fitting stiff end fixed connection, and then drive first pipe fitting stiff end and target pipe fitting are rotatory, the second pipe fitting stiff end will target pipe fitting rotatably fixes on it, and, first pipe fitting stiff end with at least one in the second pipe fitting stiff end is right target pipe fitting's the fixed elastic fixation or adopt other modes to form mobile fixed.
As shown in fig. 3 to 4, in the present embodiment, the motor of the rotation driving device is not shown, and only the rotating shaft 101 is shown, and the first pipe fixing end, also called the left fixing portion, includes: a left mounting plate 104, a left end self-aligning bearing 105 and a three-jaw chuck 106. The three-jaw chuck 106 (the three-jaw chuck is a machine tool accessory for clamping and positioning a workpiece by utilizing radial movement of three movable jaws uniformly distributed on a chuck body, and finished products are sold in the market) is used for clamping and fixing a target pipe fitting, the three-jaw chuck 106 is supported among three self-aligning bearings, the three self-aligning bearings respectively comprise an inner shaft and an outer ring, the inner shaft is horizontally fixed on the left mounting plate 104, the outer ring is pressed against the peripheral part of the three-jaw chuck 106, and the three self-aligning bearings are triangular to fix the three-jaw chuck 106 on the left mounting plate 104. As will be understood by those skilled in the art, the self-aligning bearing is a bearing in which the inner shaft can swing relative to the outer ring, so that the three-jaw chuck has a certain moving space therein under the clamping of the three self-aligning bearings. In a preferred implementation, three self-aligning bearings 105 form an equilateral triangular support configuration, holding the three-jaw chuck 106 in its center. Preferably, the three-jaw chuck 106 is connected to the driving spindle 101 through a rubber elastic element, which has axial stiffness much greater than tangential stiffness; the rotary motion is rigidly driven by a hinged rod piece, the rotary motion of the driving main shaft can be accurately transmitted to the chuck, the hinged rod piece is preferably in a right-angle Z shape, the movable range of the hinged rod piece is only in the plane of the Z shape, and therefore the chuck can be rigidly driven to rotate. The left mounting plate has a hole allowing a rubber elastic element or a drive spindle to pass through. This configuration of the left end determines the left end center point O1And may be wound around O1The point makes a slight swing to adapt to the slight change of the position of the center point of the right end.
The second pipe fitting fixing end, also called a right end fixing part, has certain similarity with the left end, but has some differences, the second pipe fitting fixing end directly adopts the self-aligning bearing to fix the target pipe fitting, and the pipe fitting is clamped and fixed in the second pipe fitting fixing end through at least three self-aligning bearings so as to allow the pipe fitting to rotate. As shown in fig. 3 and 5, the tube is supported on 3 self-aligning bearings, of which the upper self-aligning bearing is providedThe spring is arranged, namely, the outer ring of the self-aligning bearing is connected with the pipe fitting, the inner shaft is firstly fixed on a fixed block below the spring, the spring is then fixed on a right mounting plate at the side part, the pipe fitting is pressed through the spring to offset the jumping generated by the out-of-round workpiece, and 3 self-aligning bearings determine the central point O at the right end of the workpiece2. The self roundness error of the workpiece is caused, and 3 self-aligning bearings directly act on the workpiece, so the central point O2Is contained in a small circle tolerance band, the central point of the circle changes at every moment, but the tolerance size can meet the technical requirements of products.
O1And O2The virtual connecting line is the instantaneous central line of the workpiece, the workpiece rotates around the instantaneous central line, the cross section of the workpiece cut by the laser beam is perpendicular to the central line, and the workpiece has small verticality error.
A slide is disposed below at least one of the left or right securing ends to allow it to move along the slide toward or away from the other tube securing end. For example, a longer inner tube may be cut when one fixed end is moved outward, and vice versa. Therefore, pipe fittings with different lengths can be cut, and the good perpendicularity of the end face relative to the central line can be ensured on the same positioning principle.
The utility model discloses an anchor clamps have certain activity space's fixed mode through at least one side (preferred both sides), even if there is certain nonstandard factor in the pipe fitting, this kind of nonstandard also is absorbed through elastic fixed mode, rotatory smooth and easy when having guaranteed the cutting to guaranteed that the cutting is gone on along the pipe fitting axle center basically.
While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.
Claims (10)
1. A clamp for cutting a pipe, the clamp comprising: first pipe fitting stiff end, second pipe fitting stiff end and rotary driving device, first pipe fitting stiff end and second pipe fitting stiff end are used for the both ends of fixed target pipe fitting respectively, rotary driving device with first pipe fitting stiff end fixed connection, and then drive first pipe fitting stiff end and target pipe fitting are rotatory, the second pipe fitting stiff end will target pipe fitting rotatably fixes on it, and, target pipe fitting is in first pipe fitting stiff end with at least one department in the second pipe fitting stiff end adopts elastic fixation or removable fixed.
2. The apparatus as claimed in claim 1, wherein the first pipe fixing end has a chuck rotatably fixed to the first fixing frame by a resilient or movable member, and a first fixing frame, and the second pipe fixing end has a second fixing frame rotatably fixed to the fixing frame of the second pipe fixing end by three laterally disposed self-aligning bearings.
3. The clamp for cutting the pipe fitting according to claim 2, wherein the first pipe fitting fixing end adopts a three-jaw chuck to fix the target pipe fitting, the chuck is clamped and fixed on a corresponding mounting rack through at least three self-aligning bearings, outer rings of the self-aligning bearings abut against outer rings of the chuck, inner shafts of the self-aligning bearings are transversely fixed on the mounting rack, the second pipe fitting fixing end fixes the target pipe fitting through at least three self-aligning bearings, and outer rings of the self-aligning bearings abut against outer rings of the target pipe fitting.
4. The clamp for cutting pipe according to claim 3, wherein the inner shaft of at least one of the self-aligning bearings at the second pipe fixing end is fixed to the corresponding fixing frame through an elastic member, and the remaining self-aligning bearings are directly fixed to the fixing frame.
5. A clamp for cutting a tube according to claim 1, wherein a slideway is mounted below at least one of the first and second tube securing ends to enable the tube securing end to be moved along the slideway towards or away from the other tube securing end.
6. A jig for cutting tubulars as claimed in claim 1, wherein the rotary drive means comprises a drive motor and a drive shaft, the drive shaft being connected to the first tubular member fixed end by a resilient connection, the resilient connection having a stiffness in the axial direction which is substantially greater than the stiffness in the tangential direction.
7. Clamp for cutting tubes according to claim 6, characterised in that inside said elastic connection there are embedded "Z" -shaped hinges, the two corners of which are right angles, which have freedom only in the plane in which they lie.
8. The jig for cutting pipe according to claim 1, wherein a side of the target pipe is provided with a laser cutting device at a side of the second pipe fixing end, facing the target pipe.
9. The clamp for cutting tubulars of claim 1, wherein the target tubular is a wear resistant tubular or an irregular tubular.
10. Pipe cutting apparatus, characterized in that it comprises a clamp according to any one of claims 1-9 and cutting means, which are arranged on one side of the clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022283491.9U CN213560605U (en) | 2020-10-14 | 2020-10-14 | Clamp for cutting pipe fitting and corresponding cutting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022283491.9U CN213560605U (en) | 2020-10-14 | 2020-10-14 | Clamp for cutting pipe fitting and corresponding cutting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213560605U true CN213560605U (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022283491.9U Active CN213560605U (en) | 2020-10-14 | 2020-10-14 | Clamp for cutting pipe fitting and corresponding cutting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213560605U (en) |
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2020
- 2020-10-14 CN CN202022283491.9U patent/CN213560605U/en active Active
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