CN203542406U - Clamping device - Google Patents

Abstract

The utility model discloses a clamping device which comprises two parallel guide rails. A fixed clamping plate is fixed at one ends of the two guide rails, the other ends of the two guide rails are connected through a baffle, a screw rod parallel to the guide rails is arranged between the guide rails, a movable clamping plate is arranged on the two guide rails, a transmission block is arranged at the bottom of the movable clamping plate, a through hole with internal threads is formed in the transmission block, the screw rod sequentially penetrates through the fixed clamping plate and the through hole and is movably fixed on the baffle, a transmission structure is arranged at the end, away form the baffle, of the screw rod, the two guide rails are respectively provided with a guide groove, two guide wheels are arranged below the movable clamping plate, and the two guide wheels are arranged in the two guide grooves respectively. By the adoption of the structure, the possibility of generating noise by the clamping device can be effectively reduced, and the comfortable working environment is provided for operators.

Description

a clamping device

technical field

The utility model relates to the field of mechanical processing and clamping equipment, in particular to a clamping device.

Background technique

When machining or measuring a workpiece, it is often necessary to clamp and fix the workpiece before starting the operation. Whether the workpiece is clamped or fixed well will directly affect the processing or measurement effect of the workpiece. At present, the commonly used clamping structures include clamping pliers and clamping table. The clamping pliers have a simple structure and rely on the grip strength of both hands to clamp the workpiece. This increases the labor intensity. The clamping table often uses two clamping blocks to achieve workpiece clamping. Although the clamping operation is less intensive than the clamping pliers, the clamping table will emit some ear-piercing noises over time. The noise is usually formed by the friction between the clamping block and the operating table. Such frictional noise not only affects the operating environment, but also affects the hearing of the operator to a certain extent.

Utility model content

The utility model provides a clamping device, which solves the problem that the current workpiece clamping device is prone to noise, affects the working environment, and even affects the health of operators.

The purpose of this utility model is achieved through the following technical solutions: a clamping device, including two parallel guide rails, one end of the two guide rails is fixed with a static splint, the other end is connected by a baffle, and a The guide rails are parallel to the screw, the two guide rails are provided with movable splints, the bottom of the movable splint is provided with a transmission block, and the transmission block is provided with a through hole with internal thread, the screw passes through the static splint and the through hole in sequence, and is movable and fixed On the baffle, a rotating structure is provided on the end of the screw rod away from the baffle, and a guide groove is provided on each of the two guide rails, and two guide wheels are provided under the movable splint, and the two guide wheels are respectively placed on two inside the guide groove. In this scheme, the main function of the baffle is to move and fix the screw rod, and the screw rod can rotate freely. The function of the movable splint and the static splint is to clamp the workpiece. There is no special requirement for the shape of the movable splint and the static splint. It is easy to understand and realize that the movement of the movable splint depends on the rotation of the screw. The function of the screw is similar to that of a lead screw, which makes the movable splint move back and forth along the screw. In order to avoid the direct contact between the movable splint and the guide rail, reduce or even eliminate the movable splint. The noise that may be caused by friction between the splint and the guide rail. In this plan, a guide groove is set on the guide rail, and a guide wheel is set under the movable splint, thereby changing the sliding friction between the movable splint and the guide rail to rolling friction. To prevent noise, lubricating oil can also be dripped into the guide groove.

Further, two clamping plates are respectively provided at both ends of the moving splint, and the two guide rails are located between the two clamping plates, and the distance between the two clamping plates is equal to the distance between the opposite surfaces of the two guide rails. Because only the transmission block of the movable splint is under force during the movement, the force points are relatively concentrated, which is not conducive to the stability of the movable splint. The movable splint shakes to obtain a better clamping effect.

Further, convex lines are provided on the opposite surfaces of the static splint and the movable splint. The convex strip can enhance the friction between the workpiece and the movable splint and static splint to a certain extent, and prevent slipping when the workpiece is operated.

Further, the angle formed by the convex line and the vertical direction is 0-45 degrees. Since the movable splint, static splint and guide rail form a slot shape, the workpiece is mainly subjected to horizontal force during operation, so there is no need to consider the vertical force of the workpiece too much. The ~45 degree angle ensures that most of the friction will act in the horizontal direction.

Further, the rotating structure is a conical handle, the end of which has a smaller diameter is fixed on the screw rod, and the handle is perpendicular to the screw rod.

Further, the rotating structure includes a ring and four supporting rods, the screw rod passes through the center of the ring and is perpendicular to the plane where the ring is located, one end of the four supporting rods is fixed on the screw rod, and the other ends are It is fixed on the ring, and the four support rods divide the ring into four equal parts. The ring-shaped rotating structure can make the rotation of the screw rod more comfortable and convenient.

Further, the part of the screw located inside the two guide rails is provided with threads, and the part of the screw located outside the two guide rails is not provided with threads. Because the moving area of the movable splint is in the guide rail from beginning to end, the screw rod can only be provided with part of the thread, that is, the part in the guide rail is provided with thread.

Further, a bearing is provided on the static splint, and the screw rod passes through the bearing. Under the action of the bearing, the friction between the screw rod and the static splint will be relatively small, which can further reduce the possibility of noise.

The utility model has the following beneficial effects:

(1) The utility model uses the static splint and the movable splint to clamp the workpiece. The movement of the movable splint is realized by the movement of the screw. At the same time, a guide wheel is set under the movable splint, and a guide groove is set on the guide rail, thereby avoiding the movement of the movable splint. The direct contact with the guide rail reduces the friction between the movable splint and the guide rail, avoids the generation of noise, ensures a good working environment, and makes the operator less disturbed and the environment more comfortable.

(2) The utility model clamps the movable splint on the guide rail by setting clamping plates at both ends of the movable splint, which increases the force point of the movable splint, makes the workpiece easier to be clamped, and does not shake at the same time.

(3) The utility model increases the friction between the workpiece, the static splint and the dynamic splint by setting convex lines on the movable splint and the static splint, so that the workpiece is not easy to slip or even slips out of the static splint and the movable splint during operation. .

(4) The utility model adopts a ring-shaped rotating structure to realize the rotation of the screw, so as to better adjust the position of the movable splint to realize the clamping of the workpiece, and the rotation of the screw is more convenient and comfortable.

Description of drawings

Fig. 1 is the overall structural representation of embodiment 1 of the present utility model;

Fig. 2 is the structural representation of the movable splint of embodiment 1 of the present utility model;

Fig. 3 is the structural representation of embodiment 2 of the present utility model;

Fig. 4 is the structural representation of embodiment 3 of the present utility model;

Fig. 5 is a schematic structural view of Embodiment 4 of the present utility model.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example 1:

As shown in Figure 1 and Figure 2, a clamping device described in this embodiment includes two parallel guide rails 1, one end of the two guide rails 1 is fixed with a static splint 2, and the other end is connected by a baffle 7, the two guide rails 1 A screw rod 4 parallel to the guide rails 1 is provided between the guide rails 1, a movable splint 3 is provided on the two guide rails 1, a transmission block 31 is provided at the bottom of the movable splint 3, and a through hole 32 with an internal thread is provided on the transmission block 31. The screw 4 passes through the static splint 2 and the through hole 32 in sequence, and is movably fixed on the baffle 7. The transmission block 31 is sleeved on the screw 4. As the screw 4 rotates, the transmission block 31 moves along the screw 4. , and then drive the moving splint 3 to move, the end of the screw rod 4 away from the baffle plate 7 is provided with a rotating structure 6, and the two guide rails 1 are respectively provided with a guide groove 5, and the bottom of the moving splint 3 is provided with two guide wheels 33, The two guide wheels 33 are respectively placed in the two guide grooves 5, and the two guide wheels 33 can roll in the guide grooves 5 to play the role of supporting the movable splint 3, while reducing the distance between the movable splint 3 and the guide rail 1 as much as possible. The friction between them avoids the generation of noise.

As a preference, in this embodiment, the rotating structure 6 is designed as a conical handle, and the end of the handle with a smaller diameter is fixed on the screw rod 4 , and the handle is perpendicular to the screw rod 4 .

In addition, since the screw thread on the screw rod 4 only works in the moving area of the movable splint 3, the screw rod 4 can be provided with part of the thread, and the part of the screw rod 4 located in the two guide rails 1 is provided with a thread, and the screw rod 4 is located outside the two guide rails 1. The parts are not threaded.

Example 2:

As shown in Figure 3, this embodiment is basically the same as Embodiment 1, the difference is that the two ends of the moving splint 3 in this embodiment 1 are respectively provided with a clamping plate 34, and the two guide rails 1 are located on the two clamping plates 34. Between, and the distance between the two clamping plates 34 is equal to the distance between the opposite sides of the two guide rails 1, so that the movable splint 3 is just stuck in the two guide rails 1 to prevent the movable splint 3 from shaking.

Example 3:

As shown in Figure 4, in order to enhance the friction between the workpiece and the static splint 2 and the movable splint 3, this embodiment adds a convex strip 35 on the basis of the embodiment 2, and the convex strip 35 is arranged on the static splint 2 and the movable splint. 3 opposite sides.

In addition, as a preference, the included angle between the convex strip 35 and the vertical direction in this embodiment is 0-45 degrees, so that the frictional force on the workpiece is as much as possible in the horizontal direction, preventing the workpiece from appearing during operation. Slipping or even slipping out occurs.

Example 4:

As shown in Figure 5, on the basis of Embodiment 3, the present embodiment designs the rotating structure 6 into a circular ring, the rotating structure 6 includes a ring and four support rods, the screw rod 4 passes through the center of the ring and Perpendicular to the plane where the ring is located, one end of the four support rods is fixed on the screw rod 4, and the other end is fixed on the ring, and the four support rods divide the ring into quarters, so that the rotation of the screw rod 4 More convenient and comfortable.

Example 5:

In this embodiment, on the basis of any of the above embodiments, a bearing is provided on the static splint 2, and the screw 4 passes through the bearing, thereby reducing the friction between the screw 4 and the static splint 2, and further reducing the occurrence of noise.

The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, those skilled in the art can understand that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teaching of the utility model, and these variations and modifications all fall within the scope of the utility model. within the scope of the claimed protection. the

Claims (8)

1. A clamping device, characterized in that it includes two parallel guide rails (1), one end of the two guide rails (1) is fixed with a static splint (2), and the other end is connected by a baffle (7). A screw (4) parallel to the guide rails (1) is provided between the guide rails (1), a movable splint (3) is provided on the two guide rails (1), and a transmission block (31) is provided at the bottom of the movable splint (3) ), the transmission block (31) is provided with a through hole (32) with an internal thread, the screw (4) passes through the static splint (2) and the through hole (32) in turn, and is movably fixed on the baffle (7), The end of the screw (4) away from the baffle (7) is provided with a rotating structure (6), the two guide rails (1) are also provided with a guide groove (5), and the bottom of the movable splint (3) is provided with Two guide wheels (33), two guide wheels (33) are placed in two guide grooves (5) respectively. 2. A clamping device according to claim 1, characterized in that: each of the two ends of the moving splint (3) is provided with a clamping plate (34), and the two guide rails (1) are located on the two clamping plates (34), and the distance between the two clamping plates (34) is equal to the distance between the opposite sides of the two guide rails (1). 3. A clamping device according to claim 1, characterized in that: the surface of the static splint (2) opposite to the movable splint (3) is provided with convex strips (35). 4. A clamping device according to claim 3, characterized in that: the angle formed by the convex strip (35) and the vertical direction is 0-45 degrees. 5. A clamping device according to any one of claims 1-4, characterized in that: the rotating structure (6) is a conical handle, and the end of the handle with a smaller diameter is fixed On the screw rod (4), and the handle is perpendicular to the screw rod (4). 6. A clamping device according to any one of claims 1-4, characterized in that: the rotating structure (6) includes a ring and four support rods, and the screw (4) passes through the ring The center of the circle is perpendicular to the plane where the ring is located, one end of the four support rods is fixed on the screw rod (4), and the other end is fixed on the ring, and the four support rods divide the ring into four equal parts. 7. A clamping device according to claim 1, characterized in that: the part of the screw (4) located in the two guide rails (1) is provided with threads, and the screw (4) is located in the two guide rails (1) The outer portion is not threaded. 8. A clamping device according to claim 1, characterized in that: the static splint (2) is provided with a bearing, and the screw (4) passes through the bearing.

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