Multi-jaw hydraulic vise clamp

Abstract

This utility model discloses a multi-jaw hydraulic vise clamp, including a base, a clamping assembly, and a hydraulic drive cylinder. The clamping assembly includes a main body, a pull rod, multiple sliders, multiple swing arms, and multiple jaw blocks. The multiple sliders are arranged in a circumferential interval around the center of the main body. The multiple swing arms are mounted inside the main body and can swing back and forth. Each swing arm is hinged to the pull rod and driven by the pull rod to swing back and forth. Each swing arm is also hinged to a multiple slider and drives the slider to slide back and forth horizontally. By mounting multiple swing arms inside the main body and using the pull rod to drive the multiple swing arms to swing back and forth, which in turn drives the multiple sliders to slide back and forth horizontally, this design replaces the traditional structure where parts use inclined surfaces for fit. This design has lower requirements for the machining accuracy of parts, is easier to assemble, and avoids jamming. The transmission is more stable and smooth, and the clamping is more stable and reliable, bringing convenience to machining operations.

Description

Technical Field

[0001] This utility model relates to the field of vise clamps, and in particular to a multi-jaw hydraulic vise clamp. Background Technology

[0002] Hydraulic vises, as efficient and versatile clamping devices, rely primarily on a hydraulic system to provide the necessary clamping force. These clamps are widely used in various machining scenarios, including but not limited to milling, grinding, drilling, and other precision machining processes. They are mainly used to firmly hold workpieces to ensure the stability and accuracy of the machining process. Hydraulic vises are widely used in aerospace, automotive manufacturing, mold making, precision machining, and many other fields. In these fields, the requirements for machining accuracy, surface quality, and production efficiency are extremely high, and hydraulic vises have become indispensable tools due to their unique advantages. The core of a hydraulic vise lies in its hydraulic system, which uses oil pressure to drive the opening and closing of the jaws, thereby clamping and releasing the workpiece. Compared to traditional mechanical vises, the hydraulic drive provides a more stable and uniform clamping force, which is crucial for protecting the workpiece surface and improving machining accuracy.

[0003] In existing hydraulic vises, the clamping assembly mainly consists of two translation blocks, two jaws, and a pull-down block. The pull-down block is connected to the two translation blocks via a beveled joint. The up-and-down movement of the pull-down block moves the two translation blocks horizontally closer or further apart. However, due to the beveled joint, the pull-down block requires high machining precision, is difficult to assemble, and is prone to jamming, causing inconvenience to machining operations. Therefore, it is necessary to improve the current hydraulic vise fixture. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a multi-jaw hydraulic vise clamp that can effectively solve the problems of difficult assembly and easy jamming of existing hydraulic vise clamps.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-jaw hydraulic vise includes a base, a clamping assembly, and a hydraulic drive cylinder. The clamping assembly includes a main body, a pull rod, multiple sliders, multiple swing arms, and multiple jaw blocks. The main body is fixed to the base. The pull rod is movably mounted inside the main body. The multiple sliders are arranged circumferentially around the center of the main body, and each slider can slide horizontally back and forth along the radial direction of the main body. The multiple swing arms are mounted inside the main body and are hinged to the pull rod, which drives them to swing back and forth. Each swing arm is also hinged to a multiple slider and drives the sliders to slide horizontally back and forth. The multiple jaw blocks are fixed to the multiple sliders, and a clamping space for clamping workpieces is formed between the multiple jaw blocks. The hydraulic drive cylinder is located inside the base and drives the pull rod to move back and forth.

[0007] As a preferred embodiment, the outer peripheral side of the pull rod is recessed with a first hinge groove, the first hinge groove being annular, the bottom of the plurality of sliders each having a second hinge groove, and each swing arm having a first hinge portion and a second hinge portion, the first hinge portion being hinged in the first hinge groove, and the second hinge portion being hinged in the second hinge groove.

[0008] As a preferred embodiment, the outer end face of the slider is provided with a mounting hole, which communicates with the second hinge groove, and an oil injection nozzle is installed in the mounting hole.

[0009] As a preferred embodiment, the main body includes a base and a top cover. The upper and lower end faces of the base form a central chamber and multiple mounting chambers. The multiple mounting chambers are located around the central chamber and are all connected to the central chamber. The pull rod is located in the central chamber, and the multiple swing arms are respectively located in their respective mounting chambers. The top cover is fixed to the base, and the top cover has multiple sliding grooves. The multiple sliders are respectively located in their respective sliding grooves and slide back and forth along their respective sliding grooves.

[0010] As a preferred embodiment, the two opposite inner walls of the mounting chamber are recessed with slots, and each slot is fitted with a mounting block. The swing arm is mounted on a rotating shaft, and the two ends of the rotating shaft are respectively mounted on the two mounting blocks.

[0011] As a preferred embodiment, the top of the base is provided with a positioning post and a first fixing hole, and the upper cover is provided with a positioning hole and a first bolt. The positioning post is inserted into the positioning hole for positioning, and the first bolt is screwed into the first fixing hole for fixation.

[0012] As a preferred embodiment, the base is provided with a through hole, and the upper cover is provided with a second bolt, which passes through the through hole and is fixedly connected to the base.

[0013] As a preferred embodiment, the pull rod has a through hole at its center, the hydraulic drive cylinder has a piston rod with a second fixing hole, and a third bolt passes through the through hole from top to bottom and is screwed into the second fixing hole for fixation.

[0014] As a preferred embodiment, the claw block is mounted and fixed to the slider in an adjustable position by a fourth bolt, so as to be adjusted according to the size of the workpiece, thereby adapting to clamp and fix workpieces of more specifications and sizes.

[0015] As a preferred embodiment, the clamping components are arranged in multiple rows, and each clamping component is equipped with a hydraulic drive cylinder to clamp and fix multiple workpieces simultaneously.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0017] By installing multiple swing arms that can swing up and down inside the main body, and using a pull rod to drive the multiple swing arms to swing back and forth, the multiple swing arms drive multiple sliders to slide back and forth horizontally, it replaces the traditional structure in which the parts use inclined surfaces. It has lower requirements for the machining accuracy of the parts, is easier to assemble, and will not have jamming. The transmission is more stable and smooth, and the clamping is more stable and reliable, bringing convenience to the processing operation.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view of a preferred embodiment of the present utility model;

[0020] Figure 2 This is a perspective view of another preferred embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0022] Figure 4 This is an enlarged schematic diagram of the clamping component in a preferred embodiment of the present invention;

[0023] Figure 5 This is an enlarged schematic diagram of the clamping component from another angle in a preferred embodiment of the present invention;

[0024] Figure 6 This is an exploded view of the clamping component in a preferred embodiment of the present invention;

[0025] Figure 7This is an exploded view of the clamping component from another angle in a preferred embodiment of the present invention.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 10. Base; 11. Receiving slot

[0028] 20. Clamping assembly 21. Main body

[0029] 211. Base; 212. Top cover

[0030] 213. Mounting block; 214. Positioning post

[0031] 215, First bolt; 216, Second bolt

[0032] 217. Rotating shaft; 22. Tie rod

[0033] 221. First hinge groove; 222. Through hole

[0034] 23. Slider 231. Second hinge groove

[0035] 232. Mounting hole; 233. Oil filler nozzle

[0036] 234. First tooth groove; 235. Connecting hole

[0037] 24. Swing arm 241. First hinge part

[0038] 242. Second hinge part; 25. Claw block

[0039] 251. Fourth bolt; 252. Second tooth groove

[0040] 201. Clamping space; 202. Central chamber

[0041] 203. Installation chamber; 204. Slot

[0042] 205, Slide groove; 206, First fixing hole

[0043] 207. Positioning hole; 208. Through hole

[0044] 30. Hydraulic drive cylinder; 31. Piston rod

[0045] 32. Third bolt 301, second fixing hole

[0046] 40. Workpiece. Detailed Implementation

[0047] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a base 10, a clamping assembly 20, and a hydraulic drive cylinder 30.

[0048] The base 10 is a metal body, and the base 10 has a receiving groove 11 inside.

[0049] The clamping assembly 20 includes a main body 21, a pull rod 22, multiple sliders 23, multiple swing arms 24, and multiple claw blocks 25. The main body 21 is fixed to the base 10. The pull rod 22 is movably mounted inside the main body 21. The multiple sliders 23 are arranged in a circumferential interval around the center of the main body 21, and each slider 23 can be slid horizontally back and forth along the radial direction of the main body 21. The multiple swing arms 24 are mounted inside the main body 21 and can swing back and forth. The multiple swing arms 24 are all hinged to the pull rod 22 and driven by the pull rod 22 to swing back and forth. The multiple swing arms 24 are respectively hinged to the multiple sliders 23 and drive the multiple sliders 23 to slide horizontally back and forth. The multiple claw blocks 25 are respectively fixed to the multiple sliders 23, and a clamping space 201 for clamping the workpiece 40 is formed between the multiple claw blocks 25.

[0050] In this embodiment, the main body 21 includes a base 211 and a top cover 212. The upper and lower end faces of the base 211 form a central chamber 202 and multiple mounting chambers 203. These mounting chambers 203 are located around the center of the central chamber 202 and are all in communication with it. The mounting chambers 203 are three in number, spaced evenly in a circle around the center of the central chamber 202, and are not limited to one type. Two opposite inner sidewalls of each mounting chamber 203 are recessed with slots 204, and each slot 204 contains a mounting block 213. The top cover 212 is fixed to the base 211 and has multiple sliding grooves 205, not limited to three. Furthermore, the base 211 has a positioning post 214 and a first fixing hole 206 on its top, and the upper cover 212 has a positioning hole 207 and a first bolt 215. The positioning post 214 is inserted into the positioning hole 207 for positioning, and the first bolt 215 is screwed into the first fixing hole 207 for fixation. Additionally, the base 211 has a through hole 208, and the upper cover 212 has a second bolt 216, which passes through the through hole 208 and is fixedly connected to the base 10.

[0051] The pull rod 22 is located in the central chamber 202. The outer peripheral side of the pull rod 22 is recessed with a first hinge groove 221. The first hinge groove 221 is annular. The center of the pull rod 22 is provided with a through hole 222, which passes through the upper and lower end faces of the pull rod 22.

[0052] The multiple sliders 23 are respectively located in corresponding grooves 205 and slide back and forth along the corresponding grooves 205. The number of sliders 23 is three, but not limited to one. The bottom of each slider 23 has a second hinge groove 231, and the outer end face of each slider 23 has a mounting hole 232 that communicates with the second hinge groove 231. An oil injection nozzle 233 is installed in the mounting hole 232 to inject lubricating oil into the second hinge groove 231, increasing the lubrication of the mechanical connection, reducing friction, and ensuring smooth operation without jamming. In addition, the top surface of each slider 23 has multiple first toothed grooves 234 and multiple connecting holes 235.

[0053] The multiple swing arms 24 are located in corresponding mounting chambers 203. Each swing arm 24 is mounted on a rotating shaft 217, with both ends of the rotating shaft 217 mounted on two mounting blocks 213, making the installation of the swing arms 24 simple and convenient. Furthermore, each swing arm 24 has a V-shaped structure, with a first hinge portion 241 and a second hinge portion 242. The first hinge portion 241 is hinged in a first hinge groove 221, and the second hinge portion 242 is hinged in a second hinge groove 231.

[0054] The claw block 25 is adjustablely mounted on the slider 23 using a fourth bolt 251, allowing it to be adjusted according to the size of the workpiece 40 and thus accommodate workpieces 40 of various sizes. Specifically, the bottom surface of the claw block 25 has a plurality of second toothed grooves 252, which mesh with and are positioned in relation to a plurality of first toothed grooves 234. The fourth bolt 251 is screwed into the corresponding connecting hole 235 for fixation.

[0055] The hydraulic drive cylinder 30 is disposed within the base 10, and the hydraulic drive cylinder 30 drives the pull rod 22 to move up and down. In this embodiment, the hydraulic drive cylinder 30 is fixed in the receiving groove 11. The hydraulic drive cylinder 30 has a piston rod 31, and the piston rod 31 has a second fixing hole 301. A third bolt 32 passes through the through hole 222 from top to bottom and is screwed into the second fixing hole 301 for fixation, so that the pull rod 22 is fixedly connected to the piston rod 31.

[0056] In addition, there are multiple clamping assemblies 20 arranged side by side, and each clamping assembly 20 is provided with a hydraulic drive cylinder 30 so as to clamp and fix multiple workpieces 40 at the same time. The number of clamping assemblies 20 and hydraulic drive cylinders 30 is unlimited.

[0057] The working principle of this embodiment is described in detail below:

[0058] In its initial state, the piston rod 31 is at its upper limit position, and the multiple claw blocks 25 are all far from the center of the clamping space 201. First, the workpiece 40 is placed in the clamping space 201. Then, the hydraulic drive cylinder 30 is activated, causing the piston rod 31 to move downward. Next, the piston rod 31 drives the pull rod 22 to move downward. Then, the pull rod 22 drives the multiple swing arms 24 to swing forward simultaneously, causing the second hinge portions 242 of the multiple swing arms 24 to flip downward. Then, the downward flipping of the second hinge portions 242 causes the multiple sliders 23 to move synchronously toward the center of the main body 21. The multiple claw blocks 25 move toward the center of the clamping space 201 along with the movement of the multiple sliders 23, thereby clamping and fixing the workpiece 40 in the clamping space 201. At this time, the workpiece 40 can be machined.

[0059] After the workpiece 40 is processed, the hydraulic drive cylinder 30 is activated, which drives the piston rod 31 to move upward. Then, the piston rod 31 drives the pull rod 22 to move upward. Then, the pull rod 22 drives multiple swing arms 24 to swing in opposite directions at the same time, causing the second hinge portion 242 of the multiple swing arms 24 to flip upward. Then, the upward flipping of the second hinge portion 242 drives multiple sliders 23 to move synchronously away from the center of the main body 21. The multiple claw blocks 25 move away from the center of the clamping space 201 along with the movement of the multiple sliders 23, thereby releasing the workpiece 40. At this time, the workpiece 40 can be taken out of the clamping space 201.

[0060] The key design feature of this invention is that multiple swing arms are installed inside the main body and can swing back and forth. The pull rod drives the multiple swing arms to swing back and forth, and the multiple swing arms drive multiple sliders to slide back and forth horizontally. This replaces the traditional structure in which the parts are fitted with inclined surfaces. It has lower requirements for the machining accuracy of the parts, is easier to assemble, and will not cause jamming. The transmission is more stable and smooth, and the clamping is more stable and reliable, which brings convenience to the processing operation.

[0061] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A multi-jaw hydraulic vise clamp, characterized in that: The device includes a base, a clamping assembly, and a hydraulic drive cylinder. The clamping assembly includes a main body, a pull rod, multiple sliders, multiple swing arms, and multiple claw blocks. The main body is fixed to the base. The pull rod is movably mounted inside the main body. The multiple sliders are arranged circumferentially around the center of the main body, and each slider can slide horizontally back and forth along the radial direction of the main body. The multiple swing arms are mounted inside the main body and are hinged to the pull rod, which drives them to swing back and forth. Each swing arm is hinged to a multiple slider and drives the sliders to slide horizontally back and forth. The multiple claw blocks are fixed to the multiple sliders, and a clamping space for clamping workpieces is formed between the claw blocks. The hydraulic drive cylinder is located inside the base and drives the pull rod to move back and forth.

2. The multi-jaw hydraulic vise clamp according to claim 1, characterized in that: The outer peripheral side of the pull rod is recessed with a first hinge groove, which is annular. The bottom of the multiple sliders is provided with a second hinge groove. Each swing arm is provided with a first hinge part and a second hinge part. The first hinge part is embedded in the first hinge groove and the second hinge part is embedded in the second hinge groove and hinged.

3. The multi-jaw hydraulic vise clamp according to claim 2, characterized in that: The outer end face of the slider is provided with a mounting hole, which is connected to the second hinge groove, and an oil injection nozzle is installed in the mounting hole.

4. The multi-jaw hydraulic vise clamp according to claim 1, characterized in that: The main body includes a base and a top cover. The upper and lower end faces of the base form a central chamber and multiple mounting chambers. The multiple mounting chambers are located around the central chamber and are all connected to the central chamber. The pull rod is located in the central chamber, and the multiple swing arms are located in their respective mounting chambers. The top cover is fixed to the base and has multiple sliding grooves. The multiple sliders are located in their respective sliding grooves and slide back and forth along their respective sliding grooves.

5. The multi-jaw hydraulic vise clamp according to claim 4, characterized in that: The two opposite inner walls of the mounting chamber are recessed with slots, and each slot is fitted with a mounting block. The swing arm is mounted on a rotating shaft, and the two ends of the rotating shaft are respectively mounted on the two mounting blocks.

6. The multi-jaw hydraulic vise clamp according to claim 4, characterized in that: The base has a positioning post and a first fixing hole on its top. The top cover has a positioning hole and a first bolt. The positioning post is inserted into the positioning hole for positioning, and the first bolt is screwed into the first fixing hole for fixation.

7. The multi-jaw hydraulic vise clamp according to claim 6, characterized in that: The base has a through hole, and the top cover has a second bolt that passes through the through hole and is fixedly connected to the base.

8. The multi-jaw hydraulic vise clamp according to claim 1, characterized in that: The pull rod has a through hole in the center. The hydraulic drive cylinder has a piston rod with a second fixing hole. A third bolt passes through the through hole from top to bottom and is screwed into the second fixing hole for fixation.

9. The multi-jaw hydraulic vise clamp according to claim 1, characterized in that: The claw block is mounted and fixed to the slider in an adjustable position using a fourth bolt.

10. The multi-jaw hydraulic vise clamp according to claim 1, characterized in that: The clamping components are arranged in multiple rows, and each clamping component is equipped with a hydraulic drive cylinder.

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