CN102581665A - Fixture for elbows with space curves as axes - Google Patents

Abstract

The invention discloses a curved pipe clamp whose axis is a space curve, comprising a clamp body for fixing the clamp, a support, an adjustment mechanism and a clamping device; The clamp body and the clamp body are integrated, and the bolts fix the clamp body on the workbench through the holes on the clamp body; the support and adjustment mechanism includes a slider, a slider support guide plate, a chute, and a spring , a pressing plate, an adjusting screw and a fixing screw; the clamping device includes a screw rod symmetrically arranged on the upper and lower end faces of the slider support guide plate and threaded with the corresponding slider, and the upper part of the screw rod is in contact with the outer end surface of the slider support guide plate A first lock nut and a second lock nut are arranged at the place, and a V-shaped chuck is arranged at the lower end of the screw rod. The fixture involved in the invention has a simple structure, is convenient to use and maintain, and can firmly and reliably press a bent pipe whose axis is an arbitrary space curve, thereby providing convenience for processing.

Description

A Bending Fixture whose Axis Is a Space Curve

technical field

The invention relates to a clamp, in particular to a pipe bend clamp whose axis is a space curve, and belongs to the technical field of clamps.

Background technique

A kind of bent pipe now, the axis of this bent pipe is a space curve, as shown in Figure 1. If you need to process holes on the surface of the elbow, you first need to fix the elbow. Now commonly used fixing tools in the mechanical industry, such as bench vise, pressing block, etc., cannot fix the elbow well, because such commonly used fixing tools require the surface to be pressed to be a plane or a cylindrical surface. But the surface of the curved pipe is a space surface.

Contents of the invention

The object of the present invention is to provide a fixture with simple structure, easy to use, firm and reliable clamping of the curved pipe whose axis is an arbitrary space curve, and to provide convenience for processing.

In order to achieve the above object, the present invention adopts the following technical solution: a pipe bend fixture whose axis is a space curve, including a fixture main body for fixing the fixture, a support, an adjustment mechanism and a clamping device;

The clamp body includes a clamp body and a clamp body with holes arranged on both sides of the clamp body, the clamp body and the clamp body are integrated, and bolts pass through the holes on the clamp body to fix the clamp body on the workbench;

The supporting and adjusting mechanism includes a slider, a slider supporting guide plate, a chute, a spring, a pressure plate, an adjustment screw and a fixing screw; the slider supporting guide plate is symmetrically arranged on the upper and lower ends of the clamp body and is flush with the upper and lower sides of the clamp body , there are a plurality of chutes evenly and symmetrically distributed on the support guide plate of the slider, and the corresponding chute and the slider are matched together through the dovetail groove provided in the chute; the slider can move along the dovetail in the chute The groove moves, one side of the spring is fixed at the bottom of the chute, and the other side of the spring is in contact with the bottom of the slider, and the sides of the upper and lower slider support guide plates are respectively fixed together with the pressure plate by fixing screws; There are threaded holes evenly distributed on the pressure plate corresponding to the slider, and the adjusting screw abuts against the corresponding slider through the threaded hole;

The clamping device includes a threaded rod that is symmetrically arranged on the upper and lower end surfaces of the slider support guide plate and is threadedly connected with the corresponding slider. The upper part of the screw rod and the outer end surface of the slider support guide plate are connected with a first lock nut and a The second lock nut, the lower end of the screw rod is provided with a V-shaped chuck,

Preferably, the lower surface of the clamp body is a plane.

Preferably, the lower end of the screw rod is connected with the V-shaped chuck through a ball joint.

Preferably, the V-shaped chuck can perform a certain angle of rotation relative to the corresponding screw rod.

Preferably, the width of the V-shaped chuck is less than 10mm.

Beneficial effects of the present invention: the fixture involved in the present invention has a simple structure, is convenient to use and maintain, and can firmly and reliably press an elbow whose axis is an arbitrary space curve, providing convenience for processing.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is a top view of the present invention;

Fig. 3 is the left view of the present invention;

Fig. 4 is the B direction view of the present invention;

In the figure, 1. V-shaped chuck, 3. Screw rod, 9. Fixing screw, 10. First lock nut, 11. Second lock nut, 12. Slider support guide plate, 13. Slider, 14. Dovetail Groove, 15, pressing plate, 16, adjusting screw, 17, clip body, 18, blank holder, 19, hole, 20, chute, 21, spring, 22, ball head structure.

the

Detailed ways

As shown in Figures 1 to 3: the fixture device consists of three parts:

1. Fixture body: used to fix the fixture and provide support for other parts.

2. Support and adjustment mechanism: ensure the adjustment of the upper and lower positions of the V-shaped chuck.

3. Several sets of clamping devices: each set of clamping devices flexibly clamps a position of the workpiece.

Composition of the fixture main body : the fixture main body is composed of a clamp body 17 , a blank holder 18 and a hole 19 . The clamp body 17 and the blank holder 18 are integrated, and the lower surface of the clamp body 17 is a plane, so that the fixture can be placed on the workbench of the machine tool flatly. Fixtures. The clamp can also be fixed by means of fixing bolts passing through the holes 19 . The height of the blank holder 18 is much lower than the height of the fixture, so that the overall height after the fixture is fixed with a pressing block or bolt is generally not higher than the height of the fixture, so as to avoid interference to the processing.

The composition of support and adjustment mechanism : support and adjustment mechanism are mainly composed of slider 13, slider support guide plate 12, chute 20, spring 21, pressing plate 15, adjustment screw 16, dovetail groove 14, and fixing screw 9. The slider support guide plate 12 is integrated with the clamp body, and the symmetrical divisions are on the upper and lower sides of the clamp, and the slide grooves 20 are evenly and symmetrically distributed on the slider support guide plate 12 . The chute 20 cooperates with the slider 13 through the dovetail groove 14 . The slider 13 can move along the dovetail groove 14 in the sliding groove 20 . One side of the spring 21 is fixed on the bottom of the chute 20 , and the other side is in contact with the bottom of the slider 13 . The pressing plate 15 is fixed together with the slider supporting guide plate 12 through four symmetrically divided fixing screws 9 . Corresponding to the position of the slide block 13, there are threaded holes on the pressing plate 15, and the adjusting screw 16 is matched with the threaded holes. When the adjusting screw 16 is rotated, the adjusting screw 16 moves back and forth, and the slider 13 moves relatively along the dovetail groove 14 under the joint action of the spring 17 and the adjusting screw 16 .

Clamping device : Now illustrate this structure with the composition of the first group of clamping device, it has screw rod 3, first locking nut 10, second locking nut 11, V-shaped chuck 1, ball head structure 22 and form. The screw rod 3 is inserted into the threaded hole corresponding to the slider 13 to form a thread fit, and one side of the screw rod 3 is matched with a first lock nut 10 and a second lock nut 11 . The other side cooperates with the V-shaped chuck 1 through the ball head structure 22 . The V-shaped chuck 1 can rotate relative to the screw rod 3 at a certain angle. The width of the V-shaped chuck is generally controlled to be less than 10mm. Too wide a V-shaped chuck is not conducive to clamping the elbow, but it is easy to cause interference.

Working process : first put the elbow into the fixture, according to the position structure of different sections of the elbow, first adjust the upper and lower positions of each screw through the support and adjustment mechanism to ensure the locking position of each group of V-shaped chucks 1, and then rotate The corresponding two screw rods of each group of clamping devices, the V-shaped chuck 1 of each group of clamping devices clamps a section of the elbow, rotates the first lock nut 10 and the second lock nut 11 after clamping, and passes through the double The principle of nut-to-top locking is used to lock the position of the screw. The V-shaped chuck 1 can be adjusted to swing at a certain angle according to the shape of the elbow, so as to clamp the elbow better.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (5)

1. the bend pipe anchor clamps that axis is a space curve comprise the jig main body that is used for fixing anchor clamps, support, governor motion and gripping mechanism; It is characterized in that,

Said jig main body comprises clamp body and the flanging that has the hole that is arranged on the clamp body both sides, and said clamp body and flanging are one, and bolt is fixed in clamp body on the workbench through the hole in the flanging;

Said support, governor motion comprise slide block (13), slider support guide plate (12), chute (20), spring (22), pressing plate (15), adjustment screw (16) and hold-down screw (9); Said slider support guide plate (12) symmetry is located at the upper and lower side of clamp body and both ends of the surface are concordant up and down with clamp body; Be distributed with a plurality of chutes (20) on the said slider support guide plate (12) symmetrically, corresponding said chute (20) is combined together through the dovetail groove (14) that is provided with in the chute (20) with slide block (13); Said slide block (13) can move along said dovetail groove (14) in chute (20); Said spring (21) one sides are fixed on the bottom of chute (20); Spring (21) opposite side contacts with the bottom of slide block (13), and the side of the slider support guide plate (12) of said upper and lower side is fixed together through hold-down screw (9) and said pressing plate (15) respectively; Said pressing plate (15) is gone up the position even branch corresponding with slide block (13) has screwed hole, and said adjustment screw (16) connects through said screwed hole and corresponding slide block (13);

Said gripping mechanism comprises and is symmetricly set on the screw rod (3) that slider support guide plate (12) is threaded with corresponding slide block (13) on the both ends of the surface up and down; Said screw rod (3) top and said slider support guide plate (12) joint, outer face are provided with first locking nut (10) and second locking nut (11), and said screw rod (3) lower end is provided with V-arrangement dop (1).

2. the bend pipe anchor clamps that a kind of axis according to claim 1 is a space curve is characterized in that, the lower surface of said clamp body is the plane.

3. the bend pipe anchor clamps that a kind of axis according to claim 1 is a space curve is characterized in that, said screw rod (3) lower end is combined together through ball head structure (22) and said V-arrangement dop.

4. the bend pipe anchor clamps that are space curves according to claim 1 or 3 described a kind of axis is characterized in that, said V-arrangement dop (1) can rotatablely move by corresponding relatively screw rod (3) certain angle.

5. the bend pipe anchor clamps that a kind of axis according to claim 4 is a space curve is characterized in that, the width of said V-arrangement dop (1) is less than 10mm.

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