Positioning clamp for machining

Abstract

The invention relates to the technical field of machining, in particular to a positioning fixture for machining, which comprises a worktable, mounting plates are symmetrically arranged on two sides of the top of the worktable, and one sides, close to each other, of the two mounting plates are rotatably connected with a connecting shaft and a rotating shaft respectively; multifunctional clamps are arranged at the ends, close to each other, of the connecting shaft and the rotating shaft and the side, away from the rotating shaft, of the mounting plate on one side, a moving assembly is arranged in the workbench, an adjusting assembly is arranged at the bottom of the workbench, and each multifunctional clamp comprises a hexagonal connecting frame arranged at the end, close to the rotating shaft, of the connecting shaft; the clamping device comprises a hexagonal connecting frame, four sets of clamping seats are distributed on the inner side of the hexagonal connecting frame, hydraulic rods are fixedly connected to the side walls, corresponding to the four clamping seats, of the exterior of the hexagonal connecting frame, sliding cavities are evenly formed in the four clamping seats, the clamping device can adapt to and clamp irregular workpieces, and higher flexibility and adaptability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a positioning clamp for mechanical processing. BACKGROUND

[0002] In the process of mechanical processing, in order to ensure the processing precision and product quality, the workpiece needs to be accurately placed in the appropriate position and kept stable during processing to prevent displacement or shaking. Such a positioning clamp plays such a role. It can fix the workpiece in the machining range of the tool or on the workbench of the machine tool through various ways (such as clamping, supporting, adsorbing, etc.), so that the workpiece is in the correct machining position. However, the positioning clamps widely used in the market have certain limitations. Most of them can only effectively fix workpieces of standard size and shape. For those workpieces of irregular shape and special size, the fixing process becomes complex and unstable. In addition, when multi-surface processing of the workpiece is carried out, the workpiece needs to be frequently disassembled and re-fixed to adapt to different processing angles and positions, which not only increases the labor intensity of the operator, but also significantly reduces the overall work efficiency. SUMMARY

[0003] The purpose of the present application is to provide a positioning clamp for mechanical processing to solve the problems raised in the background.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A positioning clamp for mechanical processing, comprising a workbench, two installation plates are symmetrically arranged on the top of the workbench, a connecting shaft and a rotating shaft are respectively rotatably connected to one side of each installation plate, a multifunctional clamp is arranged on the end of the connecting shaft and the rotating shaft close to each other and on the side of the installation plate away from the rotating shaft, a moving assembly is arranged in the workbench, and an adjusting assembly is arranged at the bottom of the workbench. The multifunctional clamp comprises a hexagonal connecting frame arranged at the end of the connecting shaft and the rotating shaft close to each other, four groups of clamping seats are distributed on the inner side of the hexagonal connecting frame, a hydraulic rod is fixedly connected to the side wall of the hexagonal connecting frame corresponding to each clamping seat, a sliding cavity is uniformly formed in the inner part of each clamping seat, a clamping rod is equidistantly arranged on the side of each clamping seat away from the hydraulic rod, an antiskid rubber head is fixedly connected to the end of each clamping rod away from the clamping seat, a spring is arranged in the sliding cavity, a driven gear is fixedly connected to the outer wall of the rotating shaft, a driving motor is fixedly connected to the side of the installation plate away from the rotating shaft, and a driving motor is fixedly connected to the side of the installation plate away from the rotating shaft.

[0005] As a preferred solution of the present invention, the outer walls of the two hexagonal connecting frames are respectively fixedly connected to the connecting shaft and the end of the rotating shaft away from the mounting plate, one end of the four hydraulic rods passes through the side walls of the hexagonal connecting frame and are respectively fixedly connected to the outer walls of the four clamping seats, and the driving gear and the driven gear are meshed.

[0006] As a preferred solution of the present invention, the total number of the sliding cavities is the same as the total number of the clamping rods and the two are arranged in a one-to-one correspondence. The ends of the clamping rods close to the clamping seats extend into the corresponding sliding cavities, and the ends of the clamping rods extending into the sliding cavities are connected to one end of the spring. The hydraulic rod and the side where the hexagonal connecting frame are connected to each other are vertically arranged, and the inner structures of the two groups of hexagonal connecting frames are arranged identically.

[0007] As a preferred solution of the present invention, the moving component includes sliding grooves symmetrically opened on both sides of the top of the workbench, the inner cavity of the workbench is provided with a guide rod, the two ends of the guide rod are respectively fixedly connected to the inner walls on both sides of the workbench, and sliding blocks are slidably connected on both sides of the guide rod surface.

[0008] As a preferred solution of the present invention, the tops of the two sliding blocks are fixedly connected to the bottoms of the two mounting plates through a through-slide groove, a double cam is provided below the guide rod, a rotating motor is connected at the center of the double cam, the bottom of the rotating motor is fixedly connected to the bottom of the inner cavity of the workbench, both ends of the double cam are rotatably connected to connecting rods, and the ends of the two connecting rods away from the double cams are rotatably connected to the bottoms of the two sliding blocks respectively.

[0009] As a preferred solution of the present invention, the adjustment component includes a base plate arranged at the bottom end of the workbench, and both sides of the top of the base plate are fixedly connected with supporting square columns, and both sides of the supporting square columns are provided with slots, and the inner sides of the two slots are penetrated by support rods.

[0010] As a preferred solution of the present invention, the two support rods are fixedly connected to the bottom of the workbench at one end away from the supporting square column, and a vertical rod is provided inside the supporting square column. The upper and lower ends of the vertical rod are respectively fixedly connected to the upper and lower inner walls of the supporting square column, and the surfaces of the vertical rods are slidably connected with moving blocks.

[0011] As a preferred solution of the present invention, the side walls of the moving block are slidably connected to the inner walls of the supporting square columns, and the two side surfaces of the moving block are fixedly connected to one end of the two support rods extending to the inside of the supporting square columns. Adjustment hydraulic rods are connected to both sides of the bottom of the inner cavity of the supporting square columns, and the top ends of the two adjusting hydraulic rods are fixedly connected to the bottom of the moving block. The internal structures of the two groups of hexagonal connection frames are identically set.

[0012] Compared with the prior art, the present application has the following advantages: 1、In the present application, by extending the two ends of the workpiece into the hexagonal connecting frame, the hydraulic rod drives four sets of clamping seats and clamping rods to firmly clamp the workpiece, and when the clamping rods are extruded, they can move into the sliding cavity, thereby forming diversified shapes between the clamping rods to adapt to and clamp irregularly shaped workpieces.

[0013] 2、In the present application, by driving the motor with the driving gear, driven gear and rotating shaft to drive the hexagonal connecting frame together with the workpiece to rotate, the workpiece can be machined on each face. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural diagram of the present application; Figure 2 is a structural diagram of the multifunctional clamp of the present application; Figure 3 is a sectional view of the clamping seat of the present application; Figure 4 is a bottom view of the moving assembly of the present application; Figure 5 is a sectional view of the adjusting assembly of the present application.

[0015] In the figure: 1, workbench; 2, mounting plate; 3, connecting shaft; 4, rotating shaft; 5, multifunctional clamp; 6, moving assembly; 7, adjusting assembly; 501, hexagonal connecting frame; 502, hydraulic rod; 503, clamping seat; 504, clamping rod; 505, anti-skid rubber head; 506, sliding cavity; 507, spring; 508, driven gear; 509, driving motor; 510, driving gear; 601, sliding groove; 602, guide rod; 603, sliding block; 604, double cam; 605, rotating motor; 606, connecting rod; 701, supporting square column; 702, slotted; 703, supporting rod; 704, vertical rod; 705, moving block; 706, adjusting hydraulic rod; 707, bottom plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0017] For the purpose of promoting the understanding of the present application, the present application will be more fully described by referring to the following drawings and embodiments thereof. These embodiments are described in sufficient detail to enable those skilled in the art to make and use it, and it is understood that the embodiments described are not intended to limit the present application, but to the contrary, serve as illustrations of the same. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein.

[0018] It is to be understood that where an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such terms are only used to distinguish one element from another. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "and / or", "at least one of" and "one or more of" as used herein refer to and encompass any one of or any combination of any number of the listed items.

[0019] Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "contains", "containing" as used herein, are specifically intended to be construed as open-ended terms i.e., the inclusion of unspecified intermediates or steps. The terms "preferably" and "preferred" are used to indicate a desired additional feature.

[0020] Embodiments, please refer to Figures 1-5 The present application provides a technical solution: A positioning fixture for machining, comprising a workbench 1, two installation plates 2 are symmetrically arranged on the top of the workbench 1, a connecting shaft 3 and a rotating shaft 4 are rotatably connected to the side of the two installation plates 2 close to each other, the end of the connecting shaft 3 and the rotating shaft 4 close to each other and the side of the installation plate 2 away from the rotating shaft 4 are provided with a multifunctional clamp 5, a moving assembly 6 is arranged in the workbench 1, an adjusting assembly 7 is arranged at the bottom of the workbench 1, the multifunctional clamp 5 comprises a hexagonal connecting frame 501 arranged at the end of the connecting shaft 3 and the rotating shaft 4 close to each other, four groups of clamping seats 503 are distributed on the inner side of the hexagonal connecting frame 501, hydraulic rods 502 are fixedly connected to the side walls of the hexagonal connecting frame 501 corresponding to the four clamping seats 503, sliding cavities 506 are evenly arranged in the interiors of the four clamping seats 503, clamping rods 504 are equidistantly arranged on the side of the four clamping seats 503 away from the hydraulic rods 502, anti-skid rubber heads 505 are fixedly connected to the end of the clamping rods 504 away from the clamping seats 503, springs 507 are arranged in the sliding cavities 506, a driven gear 508 is fixedly connected to the outer wall of the rotating shaft 4, a driving motor 509 is fixedly connected to the side of the installation plate 2 away from the rotating shaft 4, and the output end of the driving motor 509 penetrates through the installation plate 2 and is connected with a driving gear 510.

[0021] The outer walls of the two hexagonal connecting frames 501 are fixedly connected with the ends of the connecting shaft 3 and the rotating shaft 4 away from the mounting plate 2, the ends of the four hydraulic rods 502 are fixedly connected with the outer walls of the four clamping seats 503 through the side walls of the hexagonal connecting frames 501, the driving gear 510 is in meshing connection with the driven gear 508, the total number of the sliding cavities 506 is the same as that of the clamping rods 504 and they are arranged in one-to-one correspondence, the ends of the clamping rods 504 close to the clamping seats 503 extend into the corresponding sliding cavities 506, the ends of the clamping rods 504 extending into the sliding cavities 506 are connected with the ends of the springs 507, the side of the hydraulic rod 502 connected with the hexagonal connecting frame 501 is vertically arranged, and the inner structures of the two groups of hexagonal connecting frames 501 are the same.

[0022] The moving assembly 6 comprises two symmetrical sliding grooves 601 arranged on the top of the workbench 1, the inner cavity of the workbench 1 is provided with a guide rod 602, the two ends of the guide rod 602 are fixedly connected with the inner walls of the two sides of the workbench 1, the surfaces of the guide rod 602 are slidably connected with two sliding blocks 603, the top of the two sliding blocks 603 is fixedly connected with the bottom of the two mounting plates 2 through the sliding grooves 601, the lower side of the guide rod 602 is provided with a double cam 604, the center of the double cam 604 is connected with a rotating motor 605, the bottom of the rotating motor 605 is fixedly connected with the bottom of the inner cavity of the workbench 1, the two ends of the double cam 604 are rotatably connected with a connecting rod 606, the ends of the two connecting rods 606 away from the double cam 604 are rotatably connected with the bottom of the two sliding blocks 603, and the adjusting assembly 7 comprises a bottom plate 707 arranged at the bottom end of the workbench 1, the two sides of the top of the bottom plate 707 are fixedly connected with a support square column 701, the two sides of the support square column 701 are provided with a slot 702, the inner sides of the two slots 702 are penetrated through with a support rod 703, the ends of the two support rods 703 away from the support square column 701 are fixedly connected with the bottom of the workbench 1, the inner side of the support square column 701 is provided with a vertical rod 704, the upper and lower ends of the vertical rod 704 are fixedly connected with the inner walls of the upper and lower sides of the support square column 701, the surface of the vertical rod 704 is slidably connected with a moving block 705, the side wall of the moving block 705 is slidably connected with the inner wall of the support square column 701, the two side surfaces of the moving block 705 are fixedly connected with the ends of the two support rods 703 extending into the inner side of the support square column 701, the two sides of the bottom of the inner cavity of the support square column 701 are connected with an adjusting hydraulic rod 706, the top ends of the two adjusting hydraulic rods 706 are fixedly connected with the bottom of the moving block 705, and the inner structures of the two groups of hexagonal connecting frames 501 are the same.

[0023] The work flow of the present application: when in use, the workpiece is placed between the two hexagonal connecting frames 501, the rotating motor 605 drives the double cam 604 to rotate, the two double cams 604 drive the sliding block 603 together with the mounting plate 2 to move towards the middle through the connecting rod 606, the two ends of the workpiece extend to the inside of the hexagonal connecting frame 501, the hydraulic rod 502 pushes the clamping seat 503 and the clamping rod 504 to move towards the workpiece, the clamping rod 504 can slide into the sliding cavity 506 when it is extruded by the external force from the workpiece, due to the difference between the specific point positions of each clamping rod 504 in contact with the surface of the workpiece, the variety of the contact positions leads to the fact that the displacement distances of each clamping rod 504 after being extruded are also different, so that the clamping rods 504 cooperatively form various spatial arrangements and shape combinations, which can effectively adapt to and stably clamp workpieces of various irregular shapes and complex surfaces, and the connecting rod 606 pushes the vertical rod 704 to slide on the surface of the supporting rod 703, the height of the workbench 1 can be changed by the supporting rod 703, so that the workers can work; secondly, in the process of machining, the driving motor 509 drives the driven gear 508 to rotate through the driving gear 510, so that the rotating shaft 4 can drive the workpiece to rotate through the hexagonal connecting frame 501, which can facilitate the machining of different surfaces of the workpiece.

[0024] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for machining, comprising a workbench (1), characterized in that: Mounting plates (2) are symmetrically arranged on both sides of the top of the workbench (1); the sides of the two mounting plates (2) close to each other are rotatably connected to a connecting shaft (3) and a rotating shaft (4); a multifunctional clamp (5) is provided on the end of the connecting shaft (3) and the rotating shaft (4) close to each other and on the side of one mounting plate (2) away from the rotating shaft (4); a moving component (6) is provided inside the workbench (1); and an adjusting component (7) is provided at the bottom of the workbench (1); The multifunctional clamp (5) comprises a hexagonal connecting frame (501) arranged at one end close to the connecting shaft (3) and the rotating shaft (4), four groups of clamping seats (503) are distributed on the inner side of the hexagonal connecting frame (501), the side walls of the outside of the hexagonal connecting frame (501) corresponding to the four clamping seats (503) are fixedly connected to hydraulic rods (502), the interiors of the four clamping seats (503) are uniformly provided with sliding cavities (506), and the four clamping seats (503) are away from the hydraulic rods (502). Clamping rods (504) are equidistantly arranged on both sides, and the ends of the clamping rods (504) away from the clamping seat (503) are fixedly connected to anti-slip rubber heads (505), and the interior of the sliding cavity (506) is provided with springs (507). The outer wall of the rotating shaft (4) is fixedly connected to a driven gear (508), and the side of the mounting plate (2) away from the rotating shaft (4) is fixedly connected to a driving motor (509), and the output end of the driving motor (509) passes through the mounting plate (2) and is connected to a driving gear (510).

2. A positioning fixture for machining according to claim 1, characterized in that: The outer walls of the two hexagonal connecting frames (501) are respectively fixedly connected to the connecting shaft (3) and the end of the rotating shaft (4) away from the mounting plate (2); one end of each of the four hydraulic rods (502) passes through the side wall of the hexagonal connecting frame (501) and is respectively fixedly connected to the outer walls of the four clamping seats (503); and the driving gear (510) and the driven gear (508) are meshedly connected.

3. A positioning fixture for machining according to claim 1, characterized in that: The total number of the sliding cavities (506) is the same as the total number of the clamping rods (504) and the two are arranged in a one-to-one correspondence. The ends of the clamping rods (504) close to the clamping seat (503) extend into the corresponding sliding cavities (506), and the ends of the clamping rods (504) extending into the sliding cavities (506) are connected to one end of the spring (507). The hydraulic rod (502) and the hexagonal connecting frame (501) are vertically arranged on one side where they are connected to each other. The inner structures of the two groups of hexagonal connecting frames (501) are arranged in the same way.

4. A positioning fixture for machining according to claim 1, characterized in that: The moving assembly (6) includes sliding grooves (601) symmetrically arranged on both sides of the top of the workbench (1); a guide rod (602) is provided in the inner cavity of the workbench (1); both ends of the guide rod (602) are fixedly connected to the inner walls of both sides of the workbench (1); and sliding blocks (603) are slidably connected to both sides of the surface of the guide rod (602).

5. A positioning fixture for machining according to claim 4, characterized in that: The tops of the two sliding blocks (603) are fixedly connected to the bottoms of the two mounting plates (2) through the through-slide grooves (601), a double cam (604) is provided below the guide rod (602), a rotating motor (605) is connected at the center of the double cam (604), the bottom of the rotating motor (605) is fixedly connected to the bottom of the inner cavity of the workbench (1), both ends of the double cam (604) are rotatably connected to connecting rods (606), and the ends of the two connecting rods (606) away from the double cam (604) are rotatably connected to the bottoms of the two sliding blocks (603) respectively.

6. A positioning fixture for machining according to claim 1, characterized in that: The adjustment assembly (7) comprises a base plate (707) arranged at the bottom end of the workbench (1), and supporting square columns (701) are fixedly connected to both sides of the top of the base plate (707), and slots (702) are formed on both sides of the supporting square columns (701), and support rods (703) are passed through the inner sides of the two slots (702).

7. A positioning fixture for machining according to claim 6, characterized in that: The ends of the two support rods (703) away from the supporting square column (701) are fixedly connected to the bottom of the workbench (1); a vertical rod (704) is provided inside the supporting square column (701); the upper and lower ends of the vertical rod (704) are respectively fixedly connected to the upper and lower inner walls of the supporting square column (701); and the surfaces of the vertical rods (704) are slidably connected to moving blocks (705).

8. A positioning fixture for machining according to claim 7, characterized in that: The side walls of the moving block (705) are slidably connected to the inner walls of the supporting square column (701), and the two side surfaces of the moving block (705) are fixedly connected to one end of two supporting rods (703) extending to the inside of the supporting square column (701). Adjustment hydraulic rods (706) are connected to both sides of the bottom of the inner cavity of the supporting square column (701), and the top ends of the two adjustment hydraulic rods (706) are fixedly connected to the bottom of the moving block (705). The internal structures of the two groups of hexagonal connection frames (501) are arranged in the same way.

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