End face pressing large-opening-degree turning and milling special clamp

Abstract

The utility model belongs to the technical field of clamps, and discloses an end face compression large-opening-degree turning and milling special clamp which comprises a clamp body. The clamp comprises a clamp body, a pull rod is arranged at the right end of the clamp body, a hinge mechanism is installed in the clamp body, the pull rod is connected with the hinge mechanism, the pull rod is connected to the clamp body by connecting the hinge mechanism, and the hinge mechanism comprises a hinge, a connecting rod, a floating pressing plate, a fixing pin, a connecting shaft and a connecting pin. The embodiment of the utility model provides an end face compression large-opening-degree turning and milling special clamp. A pull rod is connected with a hinge of a hinge mechanism, a connecting rod and a floating pressing plate; the fixing pin ensures that opening and closing both take the pin as a rotation reference, transmission is driven through the hinge, the structure is reliable and stable, transmission is stable, and axial and radial two-way pressing is achieved through upper and lower floating pressing plates during fixing due to the fact that the floating pressing plates are arranged for fixing.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, in particular to a special clamp for end surface pressing and large opening and closing degree turning and milling. Background Art

[0002] At present, fixtures refer to devices used to fix the workpiece in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process can be called a fixture; turning and milling machine tool fixtures refer to fixtures used to process the inner and outer rotating surfaces and end faces of the workpiece on turning and milling machine tools.

[0003] Traditionally, large and medium-sized thin-walled parts are processed on turning and milling machines. Because of their thin walls, they are easy to deform, resulting in a high rate of defective products after turning and milling. A series of support structures are added to the outside of the thin-walled parts to support the thin walls of the thin-walled parts to prevent them from deforming. However, the effect is obviously not good when used, and the deformation is aggravated.

[0004] The prior art CN201721659519.6, a fixture for turning and milling processing, specifically discloses the following contents: a slide rail is connected to a clamp seat, the clamp seat is connected to a blank, the clamp seat is fixedly connected to a clamp cover by a stretching column, so that the clamp seat has the effect of conveniently clamping the blank, a horizontal plate is respectively arranged on one side of the turning and milling fixture, a level gauge is respectively arranged on the upper side of the horizontal plate, a level needle is respectively arranged on the lower side of the horizontal plate, the level needle is connected to the level gauge through a telescopic frame, and a level gauge is respectively arranged on the horizontal plate, so that the horizontal plate has the effect of further detecting the level of the blank.

[0005] However, in actual use, the milling machine will vibrate and deform when subjected to extremely small forces during high-speed operation. There are no axial and radial clamping devices during rotation, and the axial positioning of the end face cannot be achieved. Moreover, the standard chuck is a rear-pull chuck with a small stroke, making it inconvenient to clamp special-shaped parts.

[0006] Through the above analysis, the problems and defects of the existing technology are: the existing standard chuck has no axial clamping force and cannot achieve axial positioning of the end face; the standard back-pull chuck has a small stroke and is inconvenient to clamp special-shaped parts. Utility Model Content

[0007] In view of the problems existing in the prior art, the utility model provides a special clamp for end surface clamping and large opening and closing degree turning and milling.

[0008] The utility model is realized by a special fixture for end face pressing and large opening and closing degree turning and milling, comprising:

[0009] The fixture body;

[0010] A pull rod is provided at the right end of the fixture body. A hinge mechanism is installed inside the fixture body. The pull rod is connected to the hinge mechanism. The pull rod is connected to the fixture body through the connecting hinge mechanism. The hinge mechanism includes a hinge, a connecting rod, a floating pressure plate, a fixed pin, a connecting shaft, and a connecting pin.

[0011] Further, a connecting hole is provided at the front end of the pull rod. A connecting hole is provided at each end of the hinge. The connecting hole of the pull rod is connected to the connecting hole at the left end of the hinge through a pin shaft. The pull rod is fixedly connected to the hinge.

[0012] Further, connecting holes are provided at both ends and in the middle of the connecting rod. The connecting hole at the right end of the hinge is connected to the connecting hole at the left end of the connecting rod through a connecting shaft. The hinge is fixedly connected to the connecting rod.

[0013] Further, the connecting hole in the middle of the connecting rod is connected to the fixture body through a fixed pin. The connecting rod is fixedly connected to the fixture body.

[0014] Further, the connecting hole at the right end of the connecting rod is connected to the floating pressure plate through a connecting pin. The connecting rod is fixedly connected to the floating pressure plate.

[0015] Further, the pull rod, hinge, connecting rod, and floating pressure plate are fixed on the fixture body.

[0016] Combined with the above technical solutions and the technical problems solved, please analyze the advantages and positive effects of the technical solution to be protected by the present invention from the following aspects:

[0017] First, aiming at the technical problems existing in the above-mentioned prior art and the difficulty of solving this problem, closely combining the technical solution to be protected by the present invention and the results and data in the R & D process, etc., analyze in detail and deeply how the technical solution of the present invention solves the technical problems and the creative technical effects brought after solving the problems. The specific description is as follows:

[0018] A special fixture for end face clamping and large opening and closing degree turning and milling provided by an embodiment of the present invention is connected to the hinge, connecting rod, and floating pressure plate of the hinge mechanism through a pull rod; the fixed pin ensures that both opening and closing are based on this pin as the rotation reference, and the transmission is driven by the hinge, with a reliable and stable structure and smooth transmission. Since a floating pressure plate is provided, when fixing, the axial and radial double clamping is realized through the upper and lower floating pressure plates.

[0019] Second, regarding the technical solution as a whole or from the perspective of the product, the technical effects and advantages of the technical solution to be protected by the present invention are specifically described as follows:

[0020] The hinge mechanism of the embodiment of the present utility model amplifies the pulling force generated by the pull rod through transmission by means of the fixed connection between the hinge, connecting rod, floating pressing plate, fixed pin, connecting shaft and connecting pin, thereby increasing the clamping force and firmly fixing the workpiece.

[0021] In the embodiment of the present utility model, a connecting rod is fixed between the hinge and the floating pressing plate. When the floating pressing plate is pressed, it can open and close at a large angle, increasing the opening and closing degree of the pressing plate opening, which is convenient for the upper and lower installation of materials.

[0022] The floating pressing plate and the connecting rod in the embodiment of the present utility model are connected by a connecting pin. There is a certain gap between the bottom surface of the floating pressing plate and the surface of the connecting rod. When clamping the workpiece, according to the height of the workpiece surface, the connecting pin rotates, and the gap is used for pressing adjustment, so that the floating pressing plate can solve the problem of automatic correction such as uneven workpiece surface.

[0023] Third, as the creative auxiliary evidence of the claims of the present utility model, it is also reflected in the following important aspects:

[0024] The technical solution of the present utility model overcomes the technical prejudice: the efficiency of a lathe is often higher than that of a machining center, and at the same time, the labor cost of a lathe is lower than that of a machining center. Such a tooling can transfer specific parts processed by a machining center to a lathe for processing. Brief Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of a special fixture for end face pressing and large opening and closing degree turning and milling provided by the embodiment of the present utility model;

[0026] Figure 2 is a schematic internal structure diagram of a special fixture for end face pressing and large opening and closing degree turning and milling provided by the embodiment of the present utility model;

[0027] In the figure: 1. Fixture body; 2. Pull rod; 3. Pin shaft; 4. Hinge; 5. Connecting shaft; 6. Fixed pin; 7. Connecting rod; 8. Connecting pin; 9. Floating pressing plate. Detailed Description of the Preferred Embodiment

[0028] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] As shown in Figures 1 to 2 A special fixture for end face pressing and large opening and closing degree turning and milling provided by the embodiment of the present utility model includes:

[0030] Fixture body 1;

[0031] A pull rod 2 is provided at the right end of the fixture body 1. A hinge mechanism is installed inside the fixture body 1. The pull rod 2 is connected to the hinge mechanism. The pull rod 2 is connected to the fixture body 1 through the connecting hinge mechanism. The hinge mechanism includes a hinge 4, a connecting rod 7, a floating pressure plate 9, a fixed pin 6, a connecting shaft 5 and a connecting pin 8.

[0032] A connecting hole is provided at the front end of the pull rod 2. A connecting hole is provided at each end of the hinge 4. The connecting hole of the pull rod 2 is connected to the left end connecting hole of the hinge 4 through a pin shaft 3. The pull rod 2 is fixedly connected to the hinge 4.

[0033] Connecting holes are provided at both ends and in the middle of the connecting rod 7. The right end connecting hole of the hinge 4 is connected to the left end connecting hole of the connecting rod 7 through a connecting shaft 5. The hinge 4 is fixedly connected to the connecting rod 7.

[0034] The middle connecting hole of the connecting rod 7 is connected to the fixture body 1 through a fixed pin 6. The connecting rod 7 is fixedly connected to the fixture body 1.

[0035] The right end connecting hole of the connecting rod 7 is connected to the floating pressure plate through a connecting pin 8. The connecting rod 7 is fixedly connected to the floating pressure plate 9.

[0036] The pull rod 2, the hinge 4, the connecting rod 7 and the floating pressure plate 9 are fixed on the fixture body 1.

[0037] The working principle of the embodiment of the present utility model is as follows: The fixture body 1 is fixed. When the pull rod 2 moves back and forth, the hinge mechanism moves the connecting rod 7 to rotate around the fixed pin 6, and then the floating pressure plate 9 clamps the workpiece. The floating pressure plate 9 and the connecting rod 7 are connected by a connecting pin 8. There is a certain gap between the bottom surface of the floating pressure plate 9 and the surface of the connecting rod 7. When clamping the workpiece, according to the height of the workpiece surface, the gap is used for pressing adjustment by rotating the connecting pin 8. The up and down movement of the floating pressure plate 9 is to convert the pulling force of the pull rod 2 into an opening and closing movement through the transmission of the hinge 4. Especially, a connecting rod 7 is connected to the rear end of the hinge 4, making the movement opening angle of the floating pressure plate 9 larger, which is convenient for the installation of materials.

[0038] In order to prove the creativity and technical value of the technical solution of the present utility model, this part is an application embodiment of the technical solution of the claim on a specific product or related technology.

[0039] An end face pressing large opening degree turning and milling special fixture in the embodiment of the present utility model is applied in a turning and milling machine fixture.

[0040] This part can only be processed in the red area on a machining center when placed on a traditional machine tool. With this turning and milling special fixture, such parts can be processed on a lathe.

[0041] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the technical scope disclosed by the present utility model and within the spirit and principle of the present utility model shall be covered by the protection scope of the present utility model.

Claims

1. A special fixture for end face clamping with large opening and closing degree of turning and milling, characterized in that: The end face clamping and large opening and closing degree turning and milling special fixture comprises: The fixture body; A pull rod is provided at the right end of the clamp body, and a hinge mechanism is provided inside the clamp body. The pull rod is connected to the hinge mechanism, and the pull rod is connected to the clamp body through the hinge mechanism. The hinge mechanism includes a hinge, a connecting rod, a floating pressure plate, a fixing pin, a connecting shaft and a connecting pin.

2. The end face clamping and large opening and closing special fixture for turning and milling as claimed in claim 1 is characterized in that: A connecting hole is arranged at the front end of the pull rod, and a connecting hole is arranged at each end of the hinge. The connecting hole of the pull rod is connected to the connecting hole at the left end of the hinge through a pin shaft, and the pull rod is connected and fixed with the hinge.

3. The end face clamping and large opening and closing special fixture for turning and milling as claimed in claim 1 is characterized in that: The connecting rod is provided with connecting holes at both ends and in the middle, the connecting hole at the right end of the hinge is connected to the connecting hole at the left end of the connecting rod through a connecting shaft, and the connecting rod is fixed to the hinge connection.

4. The end face clamping and large opening and closing special fixture for turning and milling as claimed in claim 1 is characterized in that: The middle connecting hole of the connecting rod is connected to the clamp body through a fixing pin, and the connecting rod is connected and fixed on the clamp body.

5. The end face clamping and large opening and closing lathe and milling special fixture as claimed in claim 1 is characterized in that: The connecting hole at the right end of the connecting rod is connected to the floating pressure plate through a connecting pin, and the connecting rod is connected and fixed with the floating pressure plate.

6. The end face clamping and large opening and closing special fixture for turning and milling as claimed in claim 1 is characterized in that: The pull rod, hinge, connecting rod and floating pressure plate are fixed on the clamp body.

Images