Dovetail rapid positioning clamp

Abstract

The utility model relates to a quick dovetail positioning clamp which comprises a mounting table, a placing table is fixedly mounted on the mounting table, at least two positioning assemblies are arranged on the placing table, and a pre-positioning assembly and a pressing assembly are arranged on the right opposite face of each positioning assembly. The pre-positioning assembly is composed of two guide blocks which are arranged in a hinged mode, the two guide blocks are arranged in a dovetail shape, and a V-shaped spring is arranged at the hinged position of the two guide blocks. The pressing assembly comprises a pressing head right facing the positioning assembly, and the pressing head is connected with the horizontal moving assembly. The positioning device has the advantages of being simple in structure, rapid in positioning and high in accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, especially a dovetail quick positioning fixture. BACKGROUND

[0002] Clamp refers to the device for fixing the processing object, making it occupy the correct position to accept construction or detection in the process of mechanical manufacturing, also called fixture, and from the broad sense, the device for quickly, conveniently and safely installing workpiece in the process of any process can be called clamp.

[0003] At present, when the workpiece with aluminum profile needs multi-direction clamping, the clamping between each direction is different due to the different stroke distances, and finally after clamping, it is easy to cause inaccurate positioning, and due to the low shape precision, accurate positioning cannot be achieved. UTILITY MODEL CONTENT

[0004] In view of the above technical problems of the prior art, the technical problem to be solved by the patent application is how to provide a dovetail quick positioning fixture with simple structure, rapid positioning and high precision.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A dovetail quick positioning fixture, comprising a mounting table, a placing table is fixedly installed on the mounting table, at least two positioning assemblies are arranged on the placing table, a pre-positioning assembly and a pressing assembly are arranged on the opposite side of each positioning assembly; the pre-positioning assembly is two hinge-connected guide blocks, the two guide blocks are arranged in a dovetail shape, and a V-shaped spring is arranged at the hinge connection of the two guide blocks; the pressing assembly comprises a pressing head arranged opposite to the positioning assembly, and the pressing head is connected with a horizontal moving assembly.

[0007] In use, the workpiece is pressed after being attached to the side of the positioning assembly, under the action of the pressing force, the included angle between the guide blocks of the pre-positioning assembly becomes larger, forming an accommodating space, so that the workpiece can fall into the placing table area, after falling, under the action of the V-shaped spring, the included angle between the two guide blocks becomes smaller, and the force is applied to the side wall of the workpiece, so that the workpiece can be tightly attached to the positioning assembly and the pre-positioning assembly, forming positioning and preliminary pressing, finally the horizontal moving assembly drives the pressing head to move, and the workpiece is clamped by applying pressure. Based on the existing positioning surface and clamping surface, the pre-positioning assembly is added, which plays a positioning role before the clamping force is applied, compared with the dynamic positioning under the pushing of the clamping force at the present stage, the positioning precision is high, the structure is simple, the operation is convenient, and the positioning and clamping can be quickly realized.

[0008] As an optimization, the free end of the guide block is provided with an inclined surface, and the end close to the workpiece is lower.

[0009] In this way, the guide block is more smoothly unfolded under the action of the inclined surface during the pressing of the workpiece, and damage to the workpiece is avoided.

[0010] As an optimization, the positioning assembly is a positioning plate fixedly installed on the side of the placing table, and the positioning plate is vertically arranged.

[0011] In this way, the support force can be provided by contacting the side wall of the workpiece, the positioning requirement can be met, and stable reaction force can be provided after clamping, so that the workpiece is prevented from falling off.

[0012] As an optimization, the horizontal moving assembly is a side pushing air cylinder arranged on the mounting table, and the telescopic end of the side pushing air cylinder is fixedly connected with the pressing head.

[0013] In this way, the clamping and releasing of the workpiece can be realized through the telescopic movement of the side pushing air cylinder, and stable force can be provided to meet the clamping requirement.

[0014] As an optimization, the two guide blocks are hingedly connected to the base, and the base is connected with the mounting table through fixing screws.

[0015] In this way, the position adjustment and dismounting and maintenance functions of the guide block can be met.

[0016] The scheme has the advantages of simple structure, rapid positioning and high precision. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the dovetail rapid positioning clamp.

[0018] Figure 2 It is a top view. Figure 1

[0019] Figure 3 It is a structure schematic view of the pre-positioning assembly.

[0020] Figure 4 It is an exploded schematic view. Figure 3 DETAILED DESCRIPTION

[0021] ​​The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] like Figures 1-4 As shown, a dovetail quick positioning fixture includes a mounting platform 1, on which a placement platform 11 is fixedly mounted. At least two positioning components are provided on the placement platform, with a pre-positioning component and a clamping component directly opposite each positioning component. The pre-positioning component consists of two hinged guide blocks 12 arranged in a dovetail shape, with a V-shaped spring 13 at the hinge joint. The clamping component includes a pressure head 14 positioned opposite the positioning components, connected to a leveling and moving component.

[0023] In use, the workpiece is pressed down against the positioning component with its side edge pressed against it. Under the downward pressure, the included angle between the guide blocks of the pre-positioning component increases, creating a receiving space that allows the workpiece to fall into the placement platform area. After falling, under the action of the V-shaped spring, the included angle between the two guide blocks decreases, and the force is applied to the side wall of the workpiece, allowing the workpiece to fit tightly against the positioning and pre-positioning components, achieving positioning and initial clamping. Finally, the horizontal moving component drives the pressure head to move, applying pressure to the workpiece to complete the clamping. This solution adds a pre-positioning component to the existing positioning and clamping surfaces, which performs the positioning function before the clamping force is applied. Compared with the current dynamic positioning driven by clamping force, it has higher positioning accuracy, a simpler overall structure, and is more convenient to operate, enabling rapid positioning and clamping.

[0024] In this embodiment, the free end of the guide block is provided with an inclined surface 15, and the end of the inclined surface closer to the workpiece is lower.

[0025] In this way, during the pressing of the workpiece, the guide block unfolds more smoothly under the action of the inclined plane, avoiding damage to the workpiece.

[0026] In this embodiment, the positioning component is a positioning plate 16 fixedly installed on the side of the placement platform, and the positioning plate is vertically arranged.

[0027] In this way, by contacting the side wall of the workpiece, a supporting force can be provided, which can not only meet the positioning requirements, but also provide a stable reaction force after clamping, thus preventing the workpiece from falling off.

[0028] In this embodiment, the horizontal moving component is a side-push cylinder 17 disposed on the mounting platform, and the telescopic end of the side-push cylinder is fixedly connected to the pressure head.

[0029] In this way, the workpiece can be clamped and released by extending and retracting the side-push cylinder, while providing a stable force to meet the clamping requirements.

[0030] In this embodiment, the two guide blocks are hinged to the base 18, and the base is connected to the mounting platform by fixing screws.

[0031] This allows for the adjustment of the guide block's position and its disassembly and maintenance.

[0032] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dovetail quick positioning fixture, characterized in that, The application relates to a positioning device for a workpiece, which comprises a mounting table, a placing table fixedly arranged on the mounting table, at least two positioning assemblies arranged on the placing table, a pre-positioning assembly and a pressing assembly arranged on the opposite side of each positioning assembly, two guide blocks in a dovetail shape arranged in a hinged mode, a V-shaped spring arranged at the hinge of the two guide blocks, a pressing head arranged opposite to the positioning assembly, and a horizontal moving assembly connected with the pressing head.

2. A dovetail rapid positioning fixture according to claim 1, wherein, The free end of the guide block is provided with an inclined surface, and the end close to the workpiece is lower.

3. A dovetail rapid positioning fixture according to claim 2, wherein, The positioning assembly is a positioning plate fixedly arranged on the side edge of the placing table, and the positioning plate is vertically arranged.

4. A dovetail rapid positioning fixture according to claim 3, wherein, The horizontal moving assembly is a side pushing air cylinder arranged on the mounting table, and the telescopic end of the side pushing air cylinder is fixedly connected with the pressing head.

5. A dovetail rapid positioning fixture according to claim 4, wherein, The two guide blocks are hinged on a base, and the base is connected with the mounting table through fixing screws.

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