CN206632682U - One kind combination clamping device - Google Patents

Abstract

The utility model discloses a combined clamping device, which comprises a clamping body, a left pressing plate, a right pressing plate, a left connecting rod, a right connecting rod, a screw and a movable block; Matching threaded holes, the screws pass through the threaded holes and are connected to the movable block; the front and rear sides of the movable block are respectively connected in rotation with the left connecting rod and the right connecting rod; the left connecting rod and the right connecting rod The openings passing through the two sides are respectively connected to the bottoms of the left and right pressure plates in rotation, the middle part of the left pressure plate is rotatably connected to the left support rod, and the middle part of the right pressure plate is rotatably connected to the right support rod. The clamping device is easy to operate, has small friction loss and good self-locking performance, reduces labor intensity of workers, shortens auxiliary time, improves production efficiency, and ensures processing quality.

Description

A combined clamping device

technical field

The utility model relates to a combined clamping device.

Background technique

The adoption of green design and manufacturing is the only way for the manufacturing industry to implement sustainable development strategies and solve environmental pollution problems. Machine tool fixture is an indispensable process equipment in the manufacturing industry, so it must develop in a green direction. From the perspective of energy form, the manual clamping device can be said to be the most green. A fatal shortcoming of the traditional manual clamping device is that the clamping force is not strong due to the limitation of the force of the human hand, which greatly limits the application range of the manual clamping device. At the same time, when some non-cylindrical workpieces need to be clamped at several points at the same time, it is difficult to use a general centering clamping mechanism; Due to the uneven clamping force at each point, the clamping deformation of the workpiece or the displacement of the workpiece will be caused to damage the positioning.

Utility model content

Purpose of utility model: The purpose of this utility model is to solve the deficiencies of the prior art above, and to provide a combined clamping device. - After three times of force increase of the pressing plate combination, a large output clamping force can be obtained, which solves the problem of small clamping force of the manual clamping device.

Technical solution: The combined clamping device described in the utility model includes a clamping body, a left pressing plate, a right pressing plate, a left connecting rod, a right connecting rod, screws and a movable block: the main body of the clamping body is a box structure , the corresponding two sides are respectively provided with openings of the same size, each of the two ends of the upper part of the clamp body is fixedly connected with a support rod, that is, a left support rod and a right support rod; the bottom of the clamp body has a Threaded hole, the screw passes through the threaded hole and is connected with the movable block; the front and rear sides of the movable block are respectively connected in rotation with the left connecting rod and the right connecting rod; the left connecting rod and the right connecting rod pass through The openings on both sides are respectively connected to the bottoms of the left and right pressure plates in rotation, the middle part of the left pressure plate is rotatably connected to the left support rod, and the middle part of the right pressure plate is rotatably connected to the right support rod.

A steel traveler is connected between the screw and the movable block, which can ensure that the movable block can only move up and down with the rotation of the screw without rotating, that is, the connecting rod will not be twisted and deformed.

The left pressing plate and the right pressing plate are both hook-shaped pressing plates, and the top of the pressing plate is a protruding arc surface structure, which can effectively clamp the same batch of parts whose size in the pressing direction changes.

Between the left pressing plate and the left support rod, the left connecting rod, between the right pressing plate and the right supporting rod, the right connecting rod, and between the left connecting rod, the right connecting rod and the movable block are all hinged. Loss of clamping force due to friction is reduced.

The upper end of the clamp body is equipped with shims, which can realize the clamping of workpieces with different dimensions in the height direction and meet the design requirements of flexible clamps, thereby effectively reducing the design and manufacturing costs and production preparation period of the clamps.

Beneficial effects: In the combined clamping device described in the utility model, the original force is applied by twisting the screw with a wrench, and after three times of force increase of the screw-connecting rod-press plate combination, the two-point linkage clamping of the workpiece can be realized, that is, A large output clamping force can be obtained, which solves the problem of small clamping force of the manual clamping device;

Using manual clamping instead of hydraulic and pneumatic clamping with high energy consumption meets the development requirements of green manufacturing technology;

Connect the two connecting rods with a hinge through a screw, so that the two pressure plates can clamp the workpiece evenly and at the same time, ensuring that the correct position obtained during the positioning of the workpiece remains unchanged;

The clamping device is easy to operate, has small friction loss and good self-locking performance, reduces labor intensity of workers, shortens auxiliary time, improves production efficiency, and ensures processing quality.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

detailed description

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the embodiments and accompanying drawings. The embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

As shown in Figure 1, the combined clamping device includes clamp body 2, left pressure plate 8, right pressure plate 9, left connecting rod 4, right connecting rod 5, screw 1 and movable block 3: the main body of clamp body 2 It is a box-type structure, and the corresponding two sides are respectively provided with openings of the same size, and the two ends of the upper part of the clamp body 2 are respectively fixedly connected with a support rod, that is, the left support rod 6 and the right support rod 7; the bottom of the clamp body 2 There is a threaded hole matched with the screw 1, and the screw 1 passes through the threaded hole to connect with the movable block 3; the front and rear sides of the movable block 3 are respectively connected with the left connecting rod 4 and the right connecting rod 5 in rotation; The connecting rod 4 and the right connecting rod 5 pass through the openings on both sides and are respectively connected to the bottom of the left pressing plate 8 and the bottom of the right pressing plate 9. Rotately connected with the right support rod 7. A steel traveler 10 is connected between the screw 1 and the movable block 3 . Both the left pressing plate 8 and the right pressing plate 9 are hook-shaped pressing plates, and the upper end of the pressing plate is a protruding arc surface structure. Between the left side pressing plate 8 and the left support rod 6, the left side connecting rod 4, between the right side pressing plate 9 and the right support rod 7, the right side connecting rod 5, and the left side connecting rod 4, the right side connecting rod 5 and the movable All adopt hinge connection between block 3. A pad iron 11 is installed on the upper end of the clamp body 2 .

In operation, the workpiece 12 is positioned on the shim 11 . Turn the screw 1 with a wrench to move upward, forcing the movable block 3 to move upward, driving the left connecting rod 4 to rotate counterclockwise, the right connecting rod 5 to rotate clockwise, and at the same time, the left pressure plate 8 goes clockwise around the middle pin direction rotation, the right pressing plate 9 rotates counterclockwise around the middle pin, so that the left pressing plate 8 and the right pressing plate 9 respectively press the workpiece evenly. After the workpiece is processed, use a wrench to turn the screw 1 in the opposite direction to make it move downward, forcing the movable block 3 to move downward, driving the left connecting rod 3 to rotate clockwise, and the right connecting rod 4 to rotate counterclockwise. , the left pressure plate 8 rotates counterclockwise around the middle pin, and the right pressure plate 9 rotates clockwise around the middle pin, so that the left pressure plate 8 and the right pressure plate 9 loosen the workpiece at the same time, and the free loading and unloading of the workpiece can be realized. When the dimensions in the height direction of the workpiece change, only the appropriate pad iron 11 needs to be replaced.

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

Claims (5)

1. A combined clamping device, characterized in that it includes a clamp body (2), a left pressure plate (8), a right pressure plate (9), a left connecting rod (4), a right connecting rod (5), Screw (1) and movable block (3): The main body of the clamp body (2) is a box-type structure, and the corresponding two sides are respectively provided with openings of the same size, and the two ends of the upper part of the clamp body (2) are fixedly connected There is a support rod, that is, the left support rod (6) and the right support rod (7); the bottom of the clamp body (2) has a threaded hole matched with the screw (1), and the screw (1) passes through the thread The hole is connected with the movable block (3); the front and rear sides of the movable block (3) are respectively connected in rotation with the left connecting rod (4) and the right connecting rod (5); the left connecting rod (4) and the The right connecting rod (5) passes through the openings on both sides and is respectively connected to the bottom of the left pressing plate (8) and the bottom of the right pressing plate (9). Rotationally connected, the middle part of the right pressure plate (9) is connected in rotation with the right support rod (7). 2. The combined clamping device according to claim 1, characterized in that a traveler (10) is connected between the screw (1) and the movable block (3). 3. The combined clamping device according to claim 1, characterized in that, the left pressing plate (8) and the right pressing plate (9) are both hook-shaped pressing plates, and the top of the pressing plate is a protruding arc surface structure. 4. The combined clamping device according to claim 1, characterized in that, between the left pressing plate (8) and the left support rod (6) and the left connecting rod (4), the right pressing plate (9) and the right A hinge is used between the support rod (7), the right connecting rod (5), and between the left connecting rod (4), the right connecting rod (5) and the movable block (3). 5. The combined clamping device according to claim 1, characterized in that, a parallel iron (11) is installed on the upper end of the clamping body (2).