CN213592318U

CN213592318U - Wedge type lever compressing clamp

Info

Publication number: CN213592318U
Application number: CN202022516744.2U
Authority: CN
Inventors: 游志明; 张正荣
Original assignee: Jiangsu Shuguang Oil Tools Co ltd
Current assignee: Jiangsu Shuguang Energy Equipment Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-07-02
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a wedge type lever compresses tightly anchor clamps, it includes base, the arm of force, gyro wheel, voussoir, screw rod and round pin. The two ends of the upper end face of the base along the length direction are respectively provided with a boss, and the opening of the front boss is hinged with the force arm through a pin. The groove reserved on the rear boss is used for placing a wedge block, a longitudinal screw hole is preset for installing a screw rod, and the screw rod is linked with the wedge block to form a lifting structure with a force arm controlled by the wedge block and a pin as a fulcrum. The utility model discloses the wedge type elevation structure who uses is simple, adjusts evenly, and it is easy to exert pressure reliably, release. The clamp designed by the integrated structure has the advantages of sufficient rigidity and high strength, and has the greatest advantage that no easily scattered component exists in the structure, so the use safety is good, and the clamp can be continuously used at fixed points. The utility model discloses be particularly suitable for big batch drilling or milling process to use.

Description

Wedge type lever compressing clamp

Technical Field

The utility model belongs to the technical field of the machining anchor clamps technique a technical scheme, specifically say, the utility model relates to an utilize lever principle location to press from both sides anchor clamps of tight work piece, especially a wedge type lever that is fit for using on table surface compresses tightly anchor clamps.

Background

The machining is a necessary basic production condition in the machine manufacturing industry, and in order to ensure stable cutting quality and safe production, a machined workpiece must be in an environment with limited necessary freedom, and the clamp is one of tools for realizing the purpose. In most cases, drilling and milling machining adopts a machining mode that workpieces are limited and a cutter moves relatively, and in reality, a clamp in a bolt pressure plate mode is commonly used for machining single or small-batch components. The loose type clamp has the advantages of simple structure, easy combination, strong universality and low application cost, and can achieve the purpose of limiting the degree of freedom of part of a workpiece. However, the loose fixture is not suitable for batch drilling or milling machining due to insufficient application reliability and auxiliary work time for loading and unloading workpieces each time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses mainly to prior art's not enough, provide a wedge type lever compresses tightly anchor clamps, this anchor clamps adopt overall structure design, and structural rigidity is sufficient, safe in utilization is good, adjust convenient, repeatedly usable.

The utility model discloses a technical goal is realized to following technical scheme.

A wedge type lever compression clamp comprises a base, a force arm, a roller, a wedge block, a screw and a pin. The base is a rectangular block member arranged on the workbench, two bosses are respectively arranged at two ends of the upper end surface along the length direction, and the opening of the front boss is hinged with a force arm by a pin to form a lever pressing structure with the force arm taking the pin as a fulcrum. The rear boss consists of two parts, a groove reserved in the front part is used for accommodating a wedge block with an upward inclined surface, and the rear part is provided with a longitudinal screw hole. The improvement is that: the contact end of the force arm and the workpiece is bent downwards, and one end of the wedge block is connected with the roller through a pin hinge to form a longitudinal rolling structure of the force arm along the inclined surface of the wedge block. The screw rod extends out and is provided with a rotating handle, the screw rod penetrates through a longitudinal screw hole in a boss arranged behind the base and is linked with the wedge block, and a lifting structure for controlling the force arm to wind the pin by the wedge block is formed.

As a further improvement scheme, a groove reserved on a boss behind the base is in clearance fit with the wedge block.

As a further improvement, the wedge block upper end inclined plane angle α =7 ° to 15 °.

As a further improvement scheme, the screw and the base are matched threads which are rectangular threads with the thread pitch of 2-3 mm.

Compared with the prior art, the utility model, following positive effect has:

1. the wedge type lifting structure is simple, the adjustment is uniform, the pressure application is reliable, and the pressure relief is easy;

2. the fixed-point pressure application or pressure relief is efficient and quick;

3. the integrated structure has enough rigidity and high strength, and most importantly, no easily scattered component exists in the structure, so the use safety is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of fig. 1.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments.

The wedge type lever pressing clamp shown in figure 1 comprises a base 1, a force arm 2, a roller 3, a wedge block 4, a screw rod 5 and a pin 6. The embodiment is applied to a fixed workpiece of a milling machine workbench, and the base 1 of the clamp is firstly positioned and connected on the milling machine workbench before use. The base 1 is a main body component of the clamp and is a rectangular block component, two bosses are respectively arranged at two ends of the upper end surface along the length direction, and the opening of the front boss is hinged with the force arm 2 by a pin 6 to form a lever structure of the force arm 2 by taking the pin 6 as a fulcrum. The rear boss consists of two parts, a groove reserved in the front part is used for accommodating a wedge block 4 with an upward inclined surface, and a longitudinal screw hole is arranged in the rear part. In this embodiment, the reserved groove of the rear boss of the base 1 is in clearance fit with the wedge 4 and can slide with each other. The wedge 4 is a component with an inclined upper end face and is used for controlling the arm 2 to lift. In order to ensure that the force arm 2 is uniformly adjusted and the pressure is reliably applied, in the embodiment, the inclined surface of the upper end surface of the wedge 4 is set to have an angle of alpha =15 degrees, and the angle has a proper lifting height in a clamping state and a self-locking function of a joint surface with a matching set, so that the workpiece is stably applied in the milling process. The force arm 2 is a long and thin rod piece, one end of the force arm, which is in contact with a workpiece, is bent downwards, one end of the wedge block 4 is hinged with a roller 3 through a pin 6, and the specially-arranged roller 3 forms a structure that the force arm 2 longitudinally rolls along the inclined surface of the wedge block 4, and the rolling structure directly improves the lifting uniformity and flexibility of the force arm 2. The screw rod 5 is provided with a rotary handle 5.1 at the extending end for manual operation. The screw 5 runs through a longitudinal screw hole preset on a rear boss of the base 1, and the screw 5 is used for transporting the wedge 4 in a combined mode to form a lifting structure which controls the force arm 2 to wind the pin 6 through the displacement of the wedge 4. In order to improve the speed and the bearing capacity of the adjusting wedge block 4 of the screw rod 5, the configured screw rod 5 and a matched screw hole preset on a rear boss of the base 1 are both T-shaped threads with the thread pitch of 2 mm.

The utility model discloses during the in-service use, at first with the work piece by the pressure deal with under the overhanging end of the arm of force 2, manual rotatory swing handle 5.1 after that for 5 drive voussoirs of screw rod 4 go straight ahead, the displacement of voussoir 4 leads to 3 limit rolling limits of gyro wheel that contact to rise, thereby realize the overhanging end of the arm of force 2 work pieces of exerting pressure downwards. Conversely, the screw 5 is unscrewed to drive the wedge block 4 to move backwards, so that the extending end of the pressing arm 2 is lifted, the pressure on the workpiece is relieved, and the subsequent workpiece is convenient to assemble and disassemble.

The utility model discloses the wedge type elevation structure who uses is simple, adjusts evenly, and it is reliable to exert pressure, and the release is easy. The integrated structure design has the advantages of enough rigidity and high strength, and has the greatest advantage that no easily scattered component exists in the structure, so the use safety is good, and the integrated structure can be continuously used at fixed points.

Claims

1. A wedge type lever compression clamp comprises a base (1), a force arm (2), a roller (3), a wedge block (4), a screw (5) and a pin (6); the base (1) is a rectangular block member arranged on the workbench, two bosses are respectively arranged at two ends of the upper end surface along the length direction, and the opening of the front boss is hinged with the force arm (2) by a pin (6) to form a lever pressing structure of the force arm (2) by taking the pin (6) as a fulcrum; the rear boss consists of two parts, a groove reserved in the front part is used for accommodating a wedge block (4) with an upward inclined surface, and a longitudinal screw hole is arranged in the rear part; the method is characterized in that: the contact end of the force arm (2) and the workpiece is bent downwards, and one end of the wedge block (4) is hinged with the roller (3) through a pin (6) to form a longitudinal rolling structure of the force arm (2) along the inclined surface of the wedge block (4); the screw rod (5) extends outwards and is provided with a rotary handle (5.1), the screw rod (5) penetrates through a longitudinal screw hole in a rear boss of the base (1) and is linked with the wedge block (4), and a lifting structure for controlling the force arm (2) to wind the pin (6) through the wedge block (4) is formed.

2. The wedge lever compression clamp of claim 1, wherein: the groove reserved on the rear boss of the base (1) is in clearance fit with the wedge block (4).

3. The wedge lever compression clamp of claim 1, wherein: the angle alpha = 7-15 degrees of the inclined plane at the upper end of the wedge block (4).

4. The wedge lever compression clamp of claim 1, wherein: the screw rod (5) and the base (1) are matched in thread form, and the thread pitch of the screw rod and the thread pitch of the base are 2-3 mm.