Workpiece clamping tool

Abstract

The utility model discloses a workpiece clamping tool which comprises a base. Vertical plates are fixed to the upper sides of the left end and the right end of the base correspondingly, two linear rails which are symmetrical in the front-back direction are arranged on the upper side of the base, two sliding blocks are slidably connected to each linear rail, movable frames are fixed to the front-back corresponding sliding blocks correspondingly, fixing plates are fixed to the bottom faces of inner cavities of the movable frames correspondingly, and air cylinders are installed on the inner sides of the vertical plates correspondingly. According to the workpiece clamping tool, a first rack is arranged at the bottom of the left end moving frame, a second rack is arranged at the bottom of the right end moving frame, and a driven gear meshed with the first rack and the second rack is arranged on the base; in the process that the air cylinders push the moving frames to move, the synchronism of the moving strokes of the moving frames at the left end and the right end can be guaranteed, the function of automatically centering and clamping workpieces is achieved, and the later machining precision is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool clamping, and in particular relates to a workpiece clamping tool. Background Art

[0002] Workpiece clamping fixtures are commonly used auxiliary facilities in modern industrial manufacturing processes. Workpieces need to be fixed with clamping fixtures during machining, spraying and other processes to facilitate processing operations.

[0003] After searching, the patent with application number 202121126934.1 discloses a workpiece clamping tool, which is configured as a clamping block by combining a clamping recess, a first arc block and a second arc block, so that the clamping block can meet the clamping effect of three different types of workpieces. The clamping recess is used to clamp the rectangular workpiece, and the inner wall of the clamping recess is adapted to the outer wall at both ends of the rectangular workpiece, which has a good clamping effect and meets the clamping requirements of cylindrical workpieces of different diameters. However, in actual use, since the clamping blocks at both ends are controlled by components such as servo motors and screw rods, the travel at both ends cannot guarantee synchronization, thereby failing to guarantee the centering clamping effect, affecting the subsequent processing accuracy. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a workpiece clamping fixture, by arranging a first rack at the bottom of the left end moving frame, by arranging a second rack at the bottom of the right end moving frame, and arranging a driven gear meshing with the first rack and the second rack on the base. In the process of the cylinder pushing the moving frame to move, the synchronization of the moving strokes of the moving frames at the left and right ends can be ensured, the function of automatic centering and clamping of the workpiece is realized, and the accuracy of later processing is guaranteed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. A driven gear is rotatably connected to the seat, and the driven gear is located between the first rack and the second rack, and the driven gear is meshed with the inner sides of the first rack and the second rack respectively. By arranging the first rack at the bottom of the left end moving frame, by arranging the second rack at the bottom of the right end moving frame, and arranging the driven gear meshing with the first rack and the second rack on the base, in the process of the cylinder pushing the moving frame to move, the synchronization of the moving strokes of the moving frames at the left and right ends can be ensured, the rollers on the moving frame can fully contact the surface of the workpiece, thereby achieving the consistency of the positioning of the workpiece, and has the function of automatic centering and clamping, which ensures the accuracy of later processing, and the rollers can rotate with the movement of the workpiece to prevent the workpiece from being damaged by the extrusion force and the surface of the workpiece, which can better meet the subsequent processing requirements.

[0007] Furthermore, two front-to-rear symmetrical fixed shafts are fixed on the base, and the fixed shafts are both sleeved with limit bearings located on the outside of the first rack and the second rack. The limit bearings are rollingly connected to the outside of the first rack and the second rack. By arranging limit bearings rollingly connected to the outside of the first rack and the second rack on the base, the two movable frames can be prevented from shifting during the movement, thereby improving the stability of use.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging a first rack at the bottom of the left end moving frame, by arranging a second rack at the bottom of the right end moving frame, and by arranging a driven gear meshing with the first rack and the second rack on the base, in the process of the cylinder pushing the moving frame to move, the synchronization of the moving strokes of the left and right end moving frames can be ensured, the rollers on the moving frame can fully contact the surface of the workpiece, thereby achieving the consistency of the positioning of the workpiece, and have the function of automatic centering and clamping, which ensures the accuracy of later processing, and the rollers can rotate with the movement of the workpiece to prevent the workpiece from being damaged by the extrusion force and the surface of the workpiece, which can better meet the subsequent processing requirements, and by arranging a limit bearing rollingly connected to the outer sides of the first rack and the second rack on the base, the two moving frames can be prevented from offsetting during the movement, thereby improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Figure 2 It is a schematic diagram of the left side cross-sectional structure of the utility model.

[0011] Figure 3 It is a schematic diagram of the structure of the utility model from top view.

[0012] In the figure: 1 base, 2 vertical plate, 3 linear rail, 4 slider, 5 mobile frame, 6 fixed plate, 7 cylinder, 8 rotating shaft, 9 roller, 10 bearing seat, 11 first rack, 12 second rack, 13 driven gear, 14 fixed shaft, 15 limit bearing. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0015] See attached Figure 1-3As shown, a workpiece clamping fixture comprises a base 1; vertical plates 2 are fixed to the upper sides of the left and right ends of the base 1, two front-to-back symmetrical linear rails 3 are arranged on the upper side of the base 1, two sliders 4 are slidably connected to the linear rails 3, a moving frame 5 is fixed to the front and rear corresponding sliders 4, a fixed plate 6 is fixed to the bottom surface of the inner cavity of the moving frame 5, a cylinder 7 is installed on the inner side of the vertical plate 2, and the telescopic end of the cylinder 7 is respectively installed on one side of the corresponding fixed plate 6, two front-to-back symmetrical rotating shafts 8 are rotatably connected in the moving frame 5, rollers 9 are sleeved on the sides of the rotating shafts 8, and the inner ends of the rollers 9 extend out of the inner side of the moving frame 5, and a bearing seat 10 located at the rotating shaft 8 is installed on the moving frame 5, a first rack 11 is fixed to the bottom side of the left end moving frame 5, and a second rack 12 is fixed to the bottom side of the right end moving frame 5, and a driven gear is rotatably connected to the base 1. 13, the driven gear 13 is located between the first rack 11 and the second rack 12, and the driven gear 13 is meshed with the inner sides of the first rack 11 and the second rack 12 respectively. By arranging the first rack 11 at the bottom of the left end moving frame 5, by arranging the second rack 12 at the bottom of the right end moving frame 5, and arranging the driven gear 13 meshed with the first rack 11 and the second rack 12 on the base 1, in the process of the cylinder 7 pushing the moving frame 5 to move, the synchronization of the moving strokes of the moving frames 5 at the left and right ends can be ensured, the roller 8 on the moving frame 5 can completely contact the surface of the workpiece, so as to achieve the consistency of the positioning of the workpiece, and has the function of automatic centering and clamping, which ensures the accuracy of later processing, and the roller 8 can rotate with the movement of the workpiece to prevent the workpiece from being damaged by the extrusion force and the surface of the workpiece, which can better meet the subsequent processing requirements.

[0016] Two front-to-rear symmetrical fixed shafts 14 are fixed on the base 1, and limit bearings 15 located on the outside of the first rack 11 and the second rack 12 are sleeved on the fixed shafts 14. The limit bearings 15 are rollingly connected to the outside of the first rack 11 and the second rack 12. By arranging the limit bearings 15 rollingly connected to the outside of the first rack 11 and the second rack 12 on the base 1, the two moving frames 5 are prevented from shifting during the movement, thereby improving the stability of use.

[0017] Working principle: Place the workpiece between the two moving frames 5, and the cylinder 7 extends, thereby driving the two moving frames 5 and the slider 4 to approach each other along the linear rail 3. When the moving frame 5 moves, under the action of the driven gear 13, the first rack 11 and the second rack 12 at the bottom of the moving frame 5 move synchronously, ensuring the synchronization of the moving strokes of the moving frames 5 at the left and right ends, until the roller 8 contacts the surface of the workpiece. It has the function of automatic centering and clamping to ensure the accuracy of later processing. The roller 8 can rotate with the movement of the workpiece to prevent the workpiece from being damaged by the extrusion force and the surface of the workpiece, which can better meet the subsequent processing requirements. By arranging a limit bearing 15 rollingly connected to the outer sides of the first rack 11 and the second rack 12 on the base 1, the two moving frames 5 are prevented from offsetting during the movement, thereby improving the stability of use.

[0018] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0019] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A workpiece clamping fixture, comprising a base, characterized in that: Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

2. A workpiece clamping fixture according to claim 1, characterized in that: Two front-to-back symmetrical fixed shafts are fixed on the base, and the fixed shafts are sleeved with limit bearings located outside the first rack and the second rack. The limit bearings are rollingly connected to the outsides of the first rack and the second rack.

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