CN103350355A - Rapid pressing mechanism for small-sized curved surface - Google Patents

Abstract

The invention discloses a small-sized curved surface fast pressing mechanism, which comprises a base, a locking screw, a spring, a pressing plate, a supporting screw, a spherical washer group, a rubber pad and an adjusting nut, wherein the locking screw is vertically fixedly connected to the base, and the locking The tightening screw goes through the through hole of the spring and the waist-shaped hole in the middle of the pressure plate, the adjusting nut is screwed on the top of the locking screw, the bottom of the adjusting nut is against the spherical washer group, one end of the pressure plate is installed with a rubber pad, and the other end of the pressure plate is worn There is a support screw rod, the bottom end of the support screw rod is against the base, and the top end of the support screw rod has a hand wheel. The quick pressing mechanism of the small curved surface of the present invention has the advantages of reliable clamping, strong versatility, fast replacement speed and the like.

Description

Quick clamping mechanism for small curved surfaces

technical field

The invention relates to a machine tool fixture, in particular to a fast pressing mechanism for a small curved surface.

Background technique

In the field of mechanical processing, curved surface workpieces are generally clamped by fixtures with V-shaped grooves, multi-point extrusion or profile structures. The compression force of the V-shaped grooves is insufficient and easy to loosen. The multi-point extrusion structure is more complicated. It is inconvenient to replace, and the versatility of the profile is poor and the cost is high. The existing fixtures mentioned above are difficult to meet the requirements of reliability, versatility and speed when processing curved surface parts in small batches. There is an urgent need for a high reliability and versatility. , A new type of fixture with fast replacement speed.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a fast pressing mechanism for small curved surfaces with high reliability, strong versatility, and fast replacement speed.

Technical solution: In order to solve the above technical problems, the present invention provides a small curved surface fast pressing mechanism, including a base, a locking screw, a spring, a pressure plate, a supporting screw, a spherical washer set, a rubber pad and an adjusting nut. The locking screw Vertically and fixedly connected to the base, the locking screw passes through the through hole of the spring and the waist-shaped hole in the middle of the pressure plate, the adjusting nut is screwed on the top of the locking screw, and the adjusting nut is below the Against the spherical washer group, one end of the pressure plate is installed with a rubber pad, the other end of the pressure plate is equipped with a support screw, the bottom end of the support screw is against the base, and the top end of the support screw has a hand wheel .

Preferably, a locking nut is screwed above the adjusting nut on the locking screw.

Preferably, a washer is sleeved on the locking screw between the spring and the pressing plate.

Preferably, the bottom end of the supporting screw is an arc surface.

Preferably, the bottom end of the locking screw is fixedly connected to the base through threads, and the bottom of the locking screw is screwed with a fixing nut that is pressed and held on the base.

Beneficial effects: the quick pressing mechanism of the small curved surface of the present invention has the advantages of reliable pressing and convenient operation due to the adoption of the lever structure; the spherical washer group adopted enables the pressing plate to rotate in a small arc, and the structure of the waist-shaped hole enables the pressing plate to be horizontal Mobile, strong adaptability to the size and shape of the workpiece; and the contact between the rubber pad and the surface of the workpiece is good.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention;

In the figure: 1 base, 2 lock screw, 2-1 fixed nut, 2-2 washer, 2-3 lock nut, 3 spring, 4 spherical washer set, 5 adjusting nut, 6 pressure plate, 6-1 waist hole , 7 support screw, 7-1 handwheel, 7-2 curved surface, 8 pads.

Detailed ways

Embodiment one

The quick pressing mechanism of the small curved surface of this embodiment is shown in Figure 1 and Figure 2, including a base 1, a locking screw 2, a spring 3, a spherical washer set 4, an adjusting nut 5, a pressure plate 6, a supporting screw 7 and rubber pads 8, wherein the locking screw 2 is vertically fixedly connected to the base 1, the locking screw 2 passes through the through hole of the spring 3 and the waist-shaped hole 6-1 in the middle of the pressure plate 6, and the adjusting nut 5 is screwed on the locking screw 2 At the top, the bottom of the adjusting nut 5 is against the spherical washer group 4, one end of the pressure plate 6 is equipped with a rubber pad 8, the other end of the pressure plate 6 is equipped with a support screw 7, the bottom end of the support screw 7 is against the base 1, and the support screw 7 The top has a handwheel 7-1.

When in use, the workpiece is placed between the rubber pad 8 and the base 1, and the horizontal position and angle of the pressure plate 6 are adjusted so that the rubber pad 8 can better contact the curved surface of the workpiece. The rubber pad 8 and the support screw 7 are used as two levers respectively. At the force end, the spherical washer group 4 on the locking screw 2 and the adjusting nut 5 form the fulcrum of the lever. Adjust the mating surface of the spherical washer group 4, and then lock the adjusting nut 5 to make the fulcrum of the pressure plate 6 relatively stable, so that a preload can be given to the workpiece with a curved surface, but the pressure plate 6 can still rotate around the fulcrum in a small vertical direction; When rotating the support screw 7, the bottom end of the support screw 7 is against the base 1, and the reaction force of the base 1 to the support screw 7 is converted into the pressure of the rubber pad 8 on the pressing plate 6 to the curved surface of the workpiece through the principle of leverage. When needing to take off workpiece, unclamp adjusting nut 5 and get final product.

Embodiment two

The quick pressing mechanism of the small curved surface of this embodiment is shown in Figure 3, which is an improvement on the basis of Embodiment 1. The improvement is that the bottom end of the locking screw 2 is fixedly connected with the base 1 through threads, and locked The bottom of the screw rod 2 is screwed with a fixed nut 2-1 held on the base 1, a washer 2-2 is set on the locking screw rod 2 between the spring 3 and the pressure plate 6, and a washer 2-2 is set on the locking screw rod 2 above the adjusting nut 5. A lock nut 2-3 is screwed together, and the bottom end of the supporting screw rod 7 is an arc surface 7-2. The improvement of the bottom of the locking screw further enhances the firmness of the fixed connection between the locking screw 2 and the base 1; and the addition of the washer 2-2 makes the elastic force of the spring 3 have a larger stress area on the pressure plate 6; the locking nut 2-3 The structure that cooperates with the adjusting nut 5 can be relatively locked and is not easy to slide; the structure of the arc surface 7-2 at the bottom of the support screw 7 increases the contact area with the base 1 when the support screw 7 is tilted relative to the base 1, and supports more reliable.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (5)

1. the Quick compressing mechanism of a small-sized curved surface, it is characterized in that: comprise base, tie down screw, spring, pressing plate, studdle, the spheric washer group, rubber cushion and adjusting nut, described tie down screw vertically is fixedly connected on the described base, described tie down screw passes the through hole of described spring and the mounting hole at described pressing plate middle part, described adjusting nut is combined on the top of tie down screw, described adjusting nut below is against the sphere washer sets, one end of described pressing plate is equipped with rubber cushion, the other end of described pressing plate is coated with studdle, the bottom of described studdle is against described base, and the top of described studdle has handwheel.

2. the Quick compressing mechanism of small-sized curved surface according to claim 1, it is characterized in that: the top of described tie down screw adjusted nut also is combined with locking nut.

3. the Quick compressing mechanism of small-sized curved surface according to claim 2 is characterized in that: be set with packing ring on the tie down screw between described spring and the pressing plate.

4. according to claim 1, the Quick compressing mechanism of 2 or 3 described small-sized curved surfaces, it is characterized in that: the bottom of described studdle is cambered surface.

5. the Quick compressing mechanism of small-sized curved surface according to claim 4, it is characterized in that: the bottom of described tie down screw is fixedly connected with base by screw thread, and the bottom of described tie down screw is combined with the hold-down nut of pressure holding on base.

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