CN218312144U

CN218312144U - Semicircle following type clamping device

Info

Publication number: CN218312144U
Application number: CN202222626068.3U
Authority: CN
Inventors: 胡丽刚; 付超; 肖波
Original assignee: Nanjing Hongxuan Technology Co ltd
Current assignee: Nanjing Hongxuan Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-17
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a semicircle following type clamping device, which is fixed on a workbench of a machine tool through a base and is used for processing and fixing circular arc or cylinder parts, wherein an arc supporting plate is arranged on the base, a semicircular arc plate is fixed on the supporting plate, a hinged support is arranged on one side of the semicircular arc plate, a pressure arm is fixed through the hinged support, and the other end of the pressure arm is fixed with the other side of the semicircular arc plate; the pressing arm comprises a pressing beam, a pressing plate is arranged on the pressing beam in a groove, the middle of the pressing plate is fixed by a fixed shaft, and two ends of the pressing plate are abutted against pressing feet arranged in the groove and are limited at two ends of the groove. The device middling pressure arm is through pressing the roof beam swing, can adapt to the great irregular surface of semicircular workpiece surface and press from both sides tightly.

Description

Semicircle following type clamping device

Technical Field

The utility model belongs to supplementary manufacturing installation among machinery or the welding process, concretely relates to semicircle following type clamping device.

Background

A semicircular arc plate/cylinder workpiece processed by adopting a metal plate belongs to a typical mechanical structure part, and in the production and processing process, the semi-circular arc plate/cylinder workpiece is always accurately and reliably positioned to ensure that the processing meets the design requirement. The positioning precision determines the quality, efficiency and economic benefit of mechanical processing or welding processing. Therefore, the positioning accuracy, the convenience of adjustment, the working reliability and the like of fixing a workpiece with a complex shape such as a semicircular or cylindrical workpiece are the most concerned problems for using and evaluating the device for checking and processing the process.

Machining refers to the process of removing material from a metal blank to obtain the geometry and mechanical properties required by the design. The welding process refers to a process of heating or pressurizing or combining more than two materials to achieve the combination between atoms to form permanent connection. Metal cutting techniques and welding techniques are widely used in the mechanical equipment manufacturing industry as important manufacturing methods for mechanical parts. The preparation of the clamping device for workpieces with complex shapes, which are stable and accurate, is an important technical measure in both mechanical manufacturing and welding processes.

The utility model discloses the production in-service use that exists for semicircular arc board/drum product positioning accuracy is not enough, the clamping is fixed takes a lot of work and time, and defect such as clamping stability is not high carries out the institutional advancement design. The welding machine mainly solves the problems of complex and unstable positioning and clamping and low positioning precision during welding of semicircular workpieces. The device adopts double positioning and clamping mechanism, so that the semicircular workpiece is positioned and aligned conveniently on the device, and the clamping is stable, reliable and simple to operate. The semi-circular workpiece clamping device is stable and accurate.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: to the not enough of current equipment, especially semi-circular arc board/cylinder work piece positioning clamp tightly difficult realization, positioning accuracy low grade problem, the utility model provides a semicircle is along with type clamping device, and the device solves the drum work piece and fixes a position the tight processing positioning accuracy problem of manufacturing process work piece such as machinery, welding.

The technical scheme is as follows: a semicircle following type clamping device is fixed on a workbench of a machine tool through a base and is used for processing and fixing circular arc-shaped plates/cylinders, an arc-shaped supporting plate is arranged on the base, a semicircular arc-shaped plate is fixed on the supporting plate, a hinged support is arranged on one side of the semicircular arc-shaped plate, a pressing arm is fixed through the hinged support, and the other end of the pressing arm is fixed with the other side of the semicircular arc-shaped plate;

the pressing arm comprises a pressing beam, a pressing plate is arranged on the pressing beam in a groove, the middle of the pressing plate is limited by a fixed shaft, and two ends of the pressing plate are abutted against pressing feet arranged in the groove and are limited at two ends of the groove.

Furthermore, the pressure arm can rotate around the free bearing, the other end of the pressure arm is fixed through a locking mechanism, the locking mechanism comprises a fixed seat arranged on the side wall of the arc-shaped supporting plate, and the fixed seat is connected with a fixing bolt through a shaft.

The presser foot on the pressure arm is movably connected in the groove and has elasticity and is telescopic under the action of the pressure plate. Further, the presser foot also comprises a limit screw for adjusting the height of the presser foot.

Furthermore, in the device of the present invention, the two sides of the arc-shaped supporting plate are provided with reinforcing plates.

In order to facilitate the fixation of the device, the periphery of the base is provided with a notch for fixing the device on the workbench.

The pressure arm be equipped with two and above, and evenly set up on the semicircle arc.

Has the advantages that: compare with current processing agency, the device middling pressure arm is through pressing the roof beam swing, can adapt to the great irregular surface of semicircular workpiece surface and press from both sides tightly. Meanwhile, the adaptability of shape following clamping on the uneven surface of the workpiece when the workpiece is clamped is increased by adjusting the height of the presser foot contacted with the pressure plate, and the clamping processing effect is adjusted.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is another side structure of the device of the present invention;

fig. 3 is a top view of the pressing arm of the present invention;

fig. 4 is a cross-sectional view of the press arm of the present invention;

fig. 5 is a side view of the pressing arm of the present invention;

fig. 6 is a tooling drawing of the press arm of the present invention.

Detailed Description

In order to explain the technical solution of the present invention in detail, the following description is further made with reference to the accompanying drawings.

The utility model provides a semicircle is along with type clamping device mainly is that the processing that is applicable to convex arc board drum work piece is fixed, for example the processing of barrel is fixed, and processing includes modes such as welding spare part or punching a hole on the barrel. For the device structure of the present invention, the overall tool structure shown in fig. 1 and 2 can be referred to.

In fig. 1 and fig. 2, the device is composed of 5 groups of pressing arms 5 with the shape following adjusting function, which are arranged on a semicircular arc plate 3. The semi-circular arc plate/cylinder workpiece to be processed is clamped and fixed, and multi-process and multi-station mechanical or welding processing after one-time clamping of the semi-circular workpiece can be realized. When the device is used, five groups of pressure arms 5 arranged on the tire beads of the arc-shaped supporting plate 2 or the semicircular arc-shaped plate 3 are opened, a semicircular workpiece is placed on the semicircular arc-shaped plate 3, then a clamping structure with a shape following adjusting function in the pressure arm 5 composition structure is pressed on the surface of the semicircular workpiece, and the clamping structure is fixed and clamped by an inner hexagonal screw. The height of the screw of the upper presser foot 503 of the pressing plate 3 can be adjusted to adapt to the irregular surface of the semicircular workpiece, so that stable and reliable positioning, clamping and fixing can be performed. Meanwhile, the upper pressing plate 501 of the pressing arm 5 rotates around the central shaft, so that the clamping force can be transmitted more evenly and can be adjusted more greatly, the adjusting structure with the double structure realizes the functions of coarse adjustment and fine adjustment, the device can realize one-time clamping of a workpiece, and the clamping and fixing of multiple processes such as welding, milling, drilling and the like of a semicircular workpiece can be realized. The stability and the positioning precision of the whole processing process are ensured.

The structure of the device according to the invention will be described in detail below.

The device is at first including a base 1, install perpendicularly above the base 1 and protect arc backup pad 2, and in order to improve support stability, the both sides face of arc backup pad 2 can set up reinforcing plate 7. The base 1 can be fixed on a T-shaped groove of a machine tool working platform or a welding working platform through screw connection. The arcs of the three groups of arc-shaped supporting plates 2 shown in the figures 1 and 2 are semicircular, and a semicircular arc-shaped plate 3 is arranged in a matched manner with the same diameter, namely a semicircular arc-shaped positioning surface is formed and used for supporting a workpiece. The hinge base 6 is fixed on the side of the arc-shaped support plate 2 or by a bead on one side of the semicircular arc-shaped plate 3, as can be seen in fig. 2. The hinged support 6 is fixed through a bolt 601, then the front end is connected with the pressing arm 5 through a shaft, and the pressing arm 5 can rotate along the shaft, namely is lifted upwards, so that the workpiece is placed and clamped. In order to avoid the jamming between the workpiece and the hinged support 6, the hinged support 6 is also provided with a baffle 602 for assistance. After the workpiece is placed, the other end of the pressing arm 5 is fixed through the locking mechanism 4. Locking mechanism 4 includes fixing base 401, fixes in the side of arc backup pad 2 or the edge of semicircle arc 3 to connect fixing bolt 402 through pivot 403, fixing bolt 402 is rotatable, conveniently locks with the one end of pressing arm 5. The fixing manner of the fixing base 401 includes fixing by a bolt 404.

As for the pressing arm 5, it can be combined with fig. 3-6. The pressing arm 5 is composed of a pressing beam, a groove is formed in the pressing beam, a pressing plate 501 is installed on the pressing beam, two ends of the pressing plate 501 are limited in the grooves in the two ends of the pressing beam, a fixing shaft 502 is arranged in the middle of the pressing beam, the fixing shaft 502 is matched with a cotter pin 504, the pressing plate 501 can rotate to a certain degree, two ends of the pressing plate 501 are in contact with the pressing foot 503, the pressing foot 503 is used for second-way fastening of a workpiece, the pressing foot 503 is installed through a limiting screw and has a certain small range of movement, after the workpiece is placed, the pressing foot 503 is abutted against the workpiece, the received force is dispersed and transmitted through the pressing plate 501, the pressing plate 501 is preferably made of a certain rigid plate, the two ends of the pressing plate are uniformly stressed, the force is well dissipated to the pressing beam, and the better fastening effect of the pressing arm 5 is achieved. One end of the pressing beam is provided with a through hole 8 for installation and fixation.

Examples

When complex-shaped workpieces are machined mechanically and welded, how to clamp and position the workpieces needs to be technically considered, and a clamping device which is suitable, convenient and accurate in positioning is designed, so that various indexes of the machined workpieces can meet the technical requirements of design. For special parts with complex shapes and precision, the processing of workpieces similar to semi-circular cylinders is also an important work content which needs to be done. The existing workpiece clamping method has great limitation and instability due to poor specialty, small application range, complex operation, unreliable positioning and the like.

The utility model discloses in the problem and the defect that the clamping process that deep research digestion understood current circular arc board work piece exists, on comprehensive study and investigation basis, what the design provided is a semicircle is along with shape clamping processingequipment. The utility model discloses fix at lathe work platform or weldment work platform's clamping structural, then press the semi-circular workpiece that will process to semi-circular workpiece circular arc surface through 5 pressure arms of this clamping device, the removal of lathe workstation or operator's operation realizes the processing of multistation continuous positioning. The utility model discloses have dual adjustment mechanism, follow the tight semicircle work piece processing requirement of shape clamp through the guiding mechanism of 2 sets of differences. Has the characteristics of dual flexible positioning and clamping adjustment functions and reliable and rapid workpiece clamping. Can move through the lathe workstation, the continuous positioning processing position realizes the parts machining of different stations, and dual tight regulation combination of clamp is high-efficient quick replacement, the reliable characteristic in location.

The following is a brief description of the related working principle and connection structure of the present invention, which is taken as a basic embodiment or a description of an alternative structure that can be modified.

1. The semi-circular surface on the base is evenly distributed with 5 pressure arms, the clamping workpiece is pressed tightly the semi-circular surface through the pressure beam of the pressure arm, one end of the 5 pressure arms is connected with the base into a whole by adopting a hinge structure, and the other end is screwed and fixed with the screw hole of the cylindrical base by using a hexagon screw.

2. The pressing beam is provided with a pressing plate, and 4 groups of pressing feet are distributed on the pressing beam. The height of the presser foot can be adjusted by adjusting the screw to adapt to the rough geometric shape of the surface unevenness of the semicircular workpiece.

3. The device is fixed with a machine tool or a working platform through a base to carry out machining operation. The shape of the semi-circle/cylinder workpiece to be clamped and fixed is matched with the semi-circle arc-shaped plate of the semi-circle conformal clamping device. The pressing plate on the pressing beam can rotate around the fixed shaft to a certain degree, so that the clamping pressure can be uniformly transmitted through the pressing feet distributed on the pressing plate along with the appearance of the workpiece. Meanwhile, 4 groups of adjustable-height presser feet are distributed through the pressure plate to adjust the clamping outside the local small offset workpiece. The semicircular conformal clamping is safely, stably and accurately realized through the double-adjustment framework.

Claims

1. The utility model provides a semicircle clamping device along with type, the device is fixed in on the workstation of lathe through base (1) for the processing of circular arc or drum class part is fixed, its characterized in that: an arc-shaped supporting plate (2) is arranged on the base (1), a semi-circular arc-shaped plate (3) is fixed on the supporting plate, a hinged support (6) is arranged on one side of the semi-circular arc-shaped plate (3), a pressing arm (5) is fixed through the hinged support (6), and the other end of the pressing arm (5) is fixed with the other side of the semi-circular arc-shaped plate (3);

the pressing arm (5) comprises a pressing beam, a pressing plate (501) is arranged on the pressing beam in a groove, the middle of the pressing plate (501) is fixed by a fixing shaft (502), and two ends of the pressing plate (501) are abutted against pressing feet (503) arranged in the groove and limited at two ends of the groove.

2. The semicircular conformal clamping device according to claim 1, wherein: the pressure arm (5) can rotate around the free bearing (6), the other end of the pressure arm (5) is fixed through a locking mechanism (4), the locking mechanism (4) comprises a fixing seat (401) arranged on the side wall of the arc-shaped supporting plate (2), and the fixing seat (401) is connected with a fixing bolt (402) through a shaft (403).

3. The semicircular conformal clamping device according to claim 1, wherein: the presser foot (503) on the presser arm (5) is movably connected in the groove, has elasticity under the action of the presser plate (501), and can stretch.

4. A semi-circular conformal clamping device according to claim 3, wherein: the pressure foot (503) comprises a limit screw for adjusting the height of the pressure foot.

5. A semi-circle conformal clamping device according to claim 1, wherein: reinforcing plates (7) are arranged on two sides of the arc-shaped supporting plate (2).

6. A semi-circle conformal clamping device according to claim 1, wherein: the periphery of the base (1) is provided with a gap for fixing the device on a workbench.

7. A semi-circle conformal clamping device according to claim 1, wherein: the pressing arms (5) are uniformly arranged on the semicircular arc-shaped plates (3).