Mechanical manufacturing clamp capable of improving precision conveniently

Abstract

The utility model discloses a machinery manufacturing clamp convenient to improve the precision, including operating platform and hold-down piece, hold-down piece includes base, operating platform and base both are provided with the chute inside, the operating platform surface is provided with a plurality of chute mutually parallel arrangement, the base top is provided with the support, and the base top is provided with the support. Eccentric fixing structures are installed on one side of the base and one side of the support, a pressing arm is installed on the other side of the support, a transmission shaft is fixed to the bottom end of the pressing arm, the pressing arm is rotationally connected with the support through the transmission shaft, a ratchet mechanism is installed on a shaft body of the transmission shaft, and a pressing block is rotationally connected to the top of the pressing arm. An anti-skid rubber block is fixed to the bottom of the pressing block and is of a hemispherical structure, the eccentric fixing structure comprises a pull rod and penetrating holes, the penetrating holes are formed in the base and the support respectively, a rod body of the pull rod penetrates through the penetrating holes and the sliding groove, and a connecting shaft is fixed to the top end of the rod body of the pull rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible clamps for mechanical manufacturing, and in particular relates to a clamp for mechanical manufacturing which is convenient for improving precision. Background Art

[0002] Mechanical manufacturing pursues high precision, and three-dimensional flexible combined fixtures have become an indispensable key auxiliary tool in mechanical processing due to their flexibility and high-precision positioning. The level of their precision is directly related to the processing quality of mechanical parts, which in turn affects the performance of the overall machinery. Therefore, in the process of mechanical manufacturing, accurate design and selection of three-dimensional flexible combined fixtures are crucial to ensure manufacturing accuracy.

[0003] The three-dimensional flexible combined fixture is a fixture that is easy to connect and disassemble, which is assembled from reusable standard fixture parts (or parts). The three-dimensional flexible combined fixture is also called a flexible three-dimensional flexible combined fixture, which is divided into a machine tool three-dimensional flexible combined fixture and a welding three-dimensional flexible combined fixture. It is a machine tool fixture system composed of a set of standardized components and parts of various shapes, specifications and uses. At present, the operating table design of the three-dimensional flexible combined fixture adopts a porous structure, which is intended to achieve rapid disassembly and assembly of standard parts. During the operation, the fixation is completed by plugging with the standard parts. However, this fixing method may cause the standard parts to shake, and the movement and adjustment during the installation process are difficult to meet the requirements of refinement. At the same time, when fixing the workpiece, the standard spiral clamping part of the traditional three-dimensional flexible combined fixture is relatively cumbersome to operate, which affects the work efficiency. In view of this, the utility model proposes a fixture for mechanical manufacturing, which is intended to realize the flexible and accurate positioning function of the standard parts, while ensuring that the operation process of the clamping part is more convenient and efficient.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical manufacturing fixture that is convenient for improving precision, comprising an operating table and a clamping piece, the clamping piece comprising a base, the operating table and the base are both provided with slide grooves, a plurality of slide grooves are arranged on the surface of the operating table, and are arranged parallel to each other, a support is provided on the top of the base, an eccentric fixing structure is installed on one side of the base and the support, a clamping arm is installed on the other side of the support, a transmission shaft is fixed to the bottom end of the clamping arm, the clamping arm is rotatably connected between the transmission shaft and the support, a ratchet mechanism is installed on the shaft body of the transmission shaft, a pressure block is rotatably connected to the top of the pressure arm, and an anti-slip rubber block is fixed to the bottom of the pressure block.

[0006] As a preferred technical solution of the utility model, the anti-slip rubber block has a hemispherical structure.

[0007] As a preferred technical solution of the utility model, the eccentric fixing structure includes a pull rod and a through hole, the through holes are respectively opened inside the base and the support, the pull rod body passes through the through hole and the slide groove, a connecting shaft is fixed to the top of the pull rod body, an eccentric wrench is rotatably connected to the connecting shaft body, and a fixed rubber block is fixed to the bottom end of the pull rod.

[0008] As a preferred technical solution of the utility model, the base and the support are located at the bottom of the eccentric wrench and a gasket is fixed thereon.

[0009] As a preferred technical solution of the utility model, the ratchet mechanism includes a ratchet body, the transmission shaft is fixed to the shaft hole of the ratchet body, a pawl is provided on one side of the ratchet body, and the pawl is rotationally connected to the support.

[0010] As a preferred technical solution of the utility model, a paddle is connected to one side of the top of the pawl, and a spring sheet is installed at the gap between the paddle and the base.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model greatly facilitates the flexible movement and distance adjustment of the base and ensures the accuracy of the position adjustment of the clamping piece by means of the vertically intersecting slide groove structure arranged on the operating table. In addition, the eccentric fixing structure is adopted to achieve rapid and stable movement of the base after movement, and effectively prevent the occurrence of displacement. At the same time, a ratchet mechanism is specially arranged at the end of the clamping arm. This design not only simplifies the fixing process of the clamping arm, but also improves the convenience of workpiece fixing. The more clamping pieces are installed on the edge of the workpiece, the more accurately the workpiece can be positioned and clamped, thereby reducing errors in the processing process. This significantly enhances the efficiency and stability of the fixing function and provides solid technical support for the sustainable development of the machinery manufacturing field. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the operating table in the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the pressing member in the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressing member in the utility model;

[0017] Figure 4 It is an enlarged structural schematic diagram of A in the utility model;

[0018] In the figure: 1. operating table; 2. base; 3. slide; 4. support; 5. clamping arm; 6. transmission shaft; 7. pressure block; 8. anti-slip rubber block; 9. pull rod; 10. perforation; 11. connecting shaft; 12. eccentric wrench; 13. fixing rubber block; 14. gasket; 15. ratchet body; 16. spring sheet; 17. pawl; 18. pick. DETAILED DESCRIPTION

[0019] 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 the embodiments. 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.

[0020] Example

[0021] See also Figure 1-4 The utility model provides the following technical solutions: a mechanical manufacturing fixture that is convenient for improving precision, including an operating table 1 and a clamping piece, the clamping piece is mainly composed of a base 2, and a slide groove 3 is arranged inside the operating table 1 and the base 2. The slide grooves 3 on the surface of the operating table 1 are arranged in a regular manner and are vertically staggered and connected to each other, ensuring the stability and smoothness of the movement of the base 2. The top of the base 2 is equipped with a support 4 for fine-tuning the distance of the clamping arm 5. An eccentric fixing structure is installed on one side of the base 2 and the support 4. This structure can effectively prevent the clamping piece from shifting during the process of fixing the workpiece, and is easy to operate. A clamping arm 5 is installed on the other side of the support 4. The bottom end of the clamping arm 5 is rotatably connected to the support 4 through a transmission shaft 6, so that the clamping arm 5 can flexibly adjust the angle. It is worth mentioning that a ratchet mechanism is installed on the shaft body of the transmission shaft 6. This design not only enhances the stability of the clamping arm 5, but also helps to accurately control the downward pressing angle of the clamping arm 5 without additional fixing. The top of the clamping arm 5 is rotatably connected to a clamping block 7, and a non-slip rubber block 8 is fixed to the bottom of the clamping block 7 to ensure that the workpiece can be firmly fixed during the clamping process to prevent sliding or displacement, thereby effectively improving the manufacturing accuracy.

[0022] In order to better fit the surface of the special-shaped workpiece, in this embodiment, as a preferred technical solution of the utility model, the anti-slip rubber block 8 has a hemispherical structure.

[0023] In order to facilitate the fixing of the support 4 or the base 2, and to facilitate the limited sliding of the base 2 and the support 4, in this embodiment, as a preferred technical solution of the utility model, the eccentric fixing structure includes a pull rod 9 and a through hole 10, and the through hole 10 is respectively opened in the base 2 and the support 4. The pull rod 9 passes through the through hole 10 and the slide groove 3. A connecting shaft 11 is fixed to the top of the pull rod 9. The connecting shaft 11 is rotatably connected to an eccentric wrench 12, and a fixed rubber block 13 is fixed to the bottom of the pull rod 9.

[0024] In order to increase the friction between the eccentric wrench 12 and the base 2 or the support 4 , in this embodiment, as a preferred technical solution of the utility model, a gasket 14 is fixed to the base 2 and the support 4 at the bottom of the eccentric wrench 12 .

[0025] In order to directly fix the angle of the clamping arm 5 and reduce the fixing steps, in this embodiment, as a preferred technical solution of the utility model, the ratchet mechanism includes a ratchet body 15, the transmission shaft 6 is fixed at the axial hole of the ratchet body 15, and a pawl 17 is provided on one side of the ratchet body 15, and the pawl 17 and the support 4 are rotationally connected.

[0026] In order to facilitate the loosening of the clamping arm 5 , in this embodiment, as a preferred technical solution of the utility model, a paddle 18 is connected to one side of the top of the pawl 17 , and a spring sheet 16 is installed at the gap between the paddle 18 and the base 2 .

[0027] In summary, with the help of the above-mentioned technical scheme of the utility model, when in use, the workpiece is placed on the operating table 1, and then the pull rod 9 and the fixed rubber block 13 on one side of the clamping piece base 2 are passed through one end of the slide groove 3 of the operating table 1, and then the base 2 is pulled to move along the slide groove 3 to approach the workpiece, and the direction of the clamping arm 5 is adjusted according to the shape of the workpiece, and then the eccentric wrench 12 is pressed, and the radius of the eccentric piece on the eccentric wrench 12 is gradually increased during rotation, and then the pull rod 9 is pulled up with the help of the connecting shaft 11, and the fixed rubber block 13 is abutted against the upper wall of the slide groove 3 of the operating table 1, so that the position of the base 2 on the operating table 1 can be fixed; then press one end of the clamping arm 5 clamping block 7, and the anti-slip rubber block 8 on the clamping block 7 is pressed against the workpiece, and then the clamping arm 5 is pressed. During the process of tightening the end of the clamping arm 5, the other end of the clamping arm 5 will drive the transmission shaft 6 to rotate, and the transmission shaft 6 will then drive the ratchet body 15 to rotate, so that the tip of the pawl 17 will slide across the surface of one side of the ratchet teeth of the ratchet body 15. When the anti-slip rubber block 8 abuts against the surface of the workpiece, the clamping arm 5 can no longer be pressed downward. At this time, the pawl 17 abuts between the ratchet teeth of the ratchet body 15 to complete the self-locking of the clamping arm 5 and prevent the clamping arm 5 from loosening. Finally, press the eccentric wrench 12 on the support 4. The principle is the same as that of the base 2. Fixing the position of the support 4 on the base 2 can complete the one-time fixation of the workpiece. The more clamping parts are installed on the edge of the workpiece, the more accurately the workpiece can be positioned and clamped, thereby reducing errors in the machining process.

[0028] When the workpiece needs to be released, the paddle 18 is pressed to press the spring sheet 16 downward, and the paddle 18 drives the tip of the pawl 17 to rise and escape from the ratchet body 15, so that the clamping arm 5 is relaxed, and then the two eccentric wrenches 12 are pulled to the other side to release the workpiece.

[0029] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mechanical manufacturing fixture for improving precision, comprising an operating table (1) and a clamping member, characterized in that: The clamping member comprises a base (2), the operating table (1) and the base (2) are both provided with a slide groove (3), a plurality of slide grooves (3) are provided on the surface of the operating table (1), and the slide grooves (3) are arranged in parallel with each other, a support (4) is provided on the top of the base (2), an eccentric fixing structure is installed on one side of the base (2) and the support (4), a clamping arm (5) is installed on the other side of the support (4), a transmission shaft (6) is fixed at the bottom end of the clamping arm (5), the clamping arm (5) is rotatably connected to the support (4) through the transmission shaft (6), a ratchet mechanism is installed on the shaft body of the transmission shaft (6), a clamping block (7) is rotatably connected to the top of the clamping arm (5), and an anti-slip rubber block (8) is fixed at the bottom of the clamping block (7).

2. A mechanical manufacturing fixture for improving precision according to claim 1, characterized in that: The anti-slip rubber block (8) has a hemispherical structure.

3. A mechanical manufacturing fixture for improving precision according to claim 1, characterized in that: The eccentric fixing structure comprises a pull rod (9) and a through hole (10), wherein the through hole (10) is respectively arranged inside the base (2) and the support (4), the pull rod (9) passes through the through hole (10) and the slide groove (3), a connecting shaft (11) is fixed at the top end of the pull rod (9), an eccentric wrench (12) is rotatably connected to the connecting shaft (11), and a fixing rubber block (13) is fixed at the bottom end of the pull rod (9).

4. A mechanical manufacturing fixture for improving precision according to claim 3, characterized in that: The base (2) and the support (4) are located at the bottom of the eccentric wrench (12) and a gasket (14) is fixed thereto.

5. The mechanical manufacturing fixture for improving precision according to claim 1, characterized in that: The ratchet mechanism comprises a ratchet body (15), the transmission shaft (6) is fixed at the shaft hole of the ratchet body (15), a ratchet pawl (17) is arranged on one side of the ratchet body (15), and the ratchet pawl (17) is rotatably connected to the support (4).

6. A mechanical manufacturing fixture for improving precision according to claim 5, characterized in that: A paddle (18) is connected to one side of the top of the pawl (17), and a spring sheet (16) is installed at the gap between the paddle (18) and the base (2).

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