Clamp convenient to adjust

Abstract

The utility model discloses a clamp convenient to adjust, which relates to the field of clamps, and comprises a case, three groups of driving blocks are arranged in a main shaft, a sliding block is arranged in a sliding groove, two groups of fixing columns are arranged in a chuck, one end of each fixing column is connected with a connecting column, the end part of each connecting column is provided with a screw rod, and the screw rod is connected with a screw rod. The outer wall of the lead screw is sleeved with a clamping plate. A person inserts a hexagon wrench into the fixing column, the fixing column drives the lead screw to rotate through the connecting column, the clamping plate arranged on the outer wall of the lead screw in a sleeving mode moves downwards to move into the sliding block, then the person pulls the chuck towards the top of the sliding groove, and then the chuck moves towards one side of the outer portion of the inner wall of the sliding groove. And the personnel uses the hexagon wrench again to drive the fixing column, the lead screw connected with the end of the fixing column drives the clamping plates to move upwards, the two clamping plates are inserted into the two clamping grooves located in the ports of the sliding grooves, and therefore the chuck is adjusted and fixed.

Description

An adjustable clamp Technical Field

[0001] This utility model relates to the field of clamps, specifically a clamp that is easy to adjust. Background Technology

[0002] CNC machine tools are modern processing equipment that integrates computer technology, automation control technology, and precision mechanical manufacturing technology. Through the computer numerical control system, processing instructions are converted into precise mechanical movements to achieve automated and high-precision processing of workpieces. As the core equipment of modern manufacturing, CNC machine tools are widely used in aerospace, automobile manufacturing, electronic equipment and other fields. Their processing efficiency and precision directly affect product quality and production efficiency.

[0003] During the machining process of CNC machine tools, the fixture uses positioning and clamping functions to firmly fix the workpiece on the machine tool worktable or spindle assembly, ensuring that the workpiece maintains a stable position and posture during machining. The spindle precisely clamps the workpiece through the chuck and drives it to rotate at high speed. At the same time, under the control of the servo system, the cutting tool performs cutting, drilling, milling and other machining operations on the workpiece according to the pre-programmed program, thereby realizing the efficient production of complex parts.

[0004] However, most existing CNC machine tool spindle fixtures adopt a fixed size design, which can only be adapted to workpieces of specific specifications. When it is necessary to process products of different sizes, operators often need to spend a lot of time disassembling and changing fixtures, or even changing to special machine tools. This limitation not only reduces production efficiency and increases equipment and labor costs, but also greatly restricts the processing range of CNC machine tools, making it difficult to meet the market's demand for diversified and customized products. Summary of the Invention

[0005] Based on this, the purpose of this utility model is to provide an easily adjustable fixture to solve the technical problem that the fixed-size design of existing CNC machine tool spindle fixtures leads to a relatively limited range of CNC machine tool products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an easily adjustable clamp, comprising a housing, a drive shaft mounted on one side of the housing, a main shaft at one end of the drive shaft, three sets of drive blocks movably disposed inside the main shaft, a sliding groove opened inside the drive block, a sliding block installed inside the sliding groove, a connecting block fixed to the top of the sliding block, a chuck at the top of the connecting block, two sets of fixing posts inside the chuck, a connecting post connected to one end of the fixing post, a lead screw at the end of the connecting post, and a clamping plate sleeved on the outer wall of the lead screw.

[0007] By adopting the above technical solution, the problem of limited product processing capabilities caused by the fixed-size design of existing CNC machine tool spindle fixtures is solved. When the diameter of the object held by the chuck increases, the operator inserts a hex wrench into the fixed column. The fixed column rotates the lead screw through the connecting column, causing the clamping plate sleeved on the outer wall of the lead screw to move downwards and into the sliding block. Then, the operator pulls the chuck towards the top of the sliding groove and moves it to the outer side of the inner wall of the sliding groove. The operator uses the hex wrench again to drive the fixed column, causing the lead screw connected to the end of the fixed column to move the clamping plate upwards, so that the two sets of clamping plates are inserted into the two sets of clamping slots located at the port of the sliding groove, thereby completing the adjustment and fixing of the chuck.

[0008] The present invention is further configured such that one end of the drive shaft is connected to a mounting plate, and the outer wall of the mounting plate is provided with multiple sets of bolt holes.

[0009] Preferably, the drive shaft is fixedly mounted on one side of the outer wall of the chassis by a mounting plate, and the mounting plate is fixedly mounted using bolts.

[0010] The present invention is further configured such that a first rack is provided on the top of the drive block and a second rack is installed on the bottom of the chuck.

[0011] Preferably, when the operator adjusts the position of the chuck, the drive block and the chuck are fixed by the latch between the first rack and the second rack, so that when the operator uses a hex wrench to drive the fixing post, the chuck and the drive block will not slide, thus facilitating the operator to install and fix the chuck inside the drive block.

[0012] The present invention is further configured such that the inner wall of the fixing column is hexagonal, and the fixing column is movably disposed inside the chuck.

[0013] Preferably, a person can insert a hex wrench into the fixed post, thereby driving the fixed post to rotate.

[0014] The present invention is further configured such that the inner wall of the sliding groove is provided with three sets of slots, and the three sets of slots are equally spaced.

[0015] Preferably, the clamping diameter of the three chucks is adjusted by inserting two sets of chucks into two adjacent chuck slots.

[0016] The present invention is further configured such that the sliding block is an isosceles trapezoid, and the size of the sliding groove is larger than the size of the sliding block.

[0017] Preferably, the sliding block can move up and down inside the sliding groove, which facilitates personnel to adjust the position of the chuck.

[0018] The present invention is further configured such that the height of the first rack is less than the distance between the sliding groove and the sliding block.

[0019] Preferably, when the chuck moves into the sliding block, the operator can pull the chuck outward from the sliding groove, so that the second rack at the bottom of the chuck and the first rack at the top of the drive block move away from each other, allowing the operator to adjust the position of the chuck.

[0020] The present invention is further configured such that the three sets of chucks are equally spaced, and the central angle between the three sets of chucks is 120 degrees.

[0021] Preferably, the drive system inside the spindle synchronously drives the chucks through a drive block, so that the three sets of chucks clamp the object.

[0022] In summary, the present invention has the following main advantages:

[0023] 1. This utility model solves the problem of limited product processing capabilities caused by the fixed-size design of existing CNC machine tool spindle fixtures by setting up a chassis, spindle, drive block, chuck, fixed column, lead screw, and clamping plate. When the diameter of the item held by the chuck increases, the operator inserts a hex wrench into the fixed column. The fixed column drives the lead screw to rotate through the connecting column, and the clamping plate sleeved on the outer wall of the lead screw moves downward, moving into the sliding block. Then, the operator pulls the chuck towards the top of the sliding groove, and then moves the chuck to the outer side of the inner wall of the sliding groove. The operator uses the hex wrench again to drive the fixed column, causing the lead screw connected to the end of the fixed column to drive the clamping plate upward, so that the two sets of clamping plates are inserted into the two sets of clamping slots located at the port of the sliding groove, thereby completing the adjustment and fixing of the chuck.

[0024] 2. By setting up a drive block, a first rack, a chuck, and a second rack, when the position of the chuck is adjusted by the personnel, the drive block and the chuck are fixed by the snap-fit ​​between the first rack and the second rack, so that when the personnel use a hex wrench to drive the fixing column, the chuck and the drive block will not slide, thus making it convenient for the personnel to install and fix the chuck inside the drive block. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall device of this utility model;

[0026] Figure 2 is a schematic diagram of the drive shaft connection of this utility model;

[0027] Figure 3 is a schematic diagram of the internal structure of the drive block of this utility model;

[0028] Figure 4 is a schematic diagram of the chuck of this utility model;

[0029] Figure 5 is a schematic diagram of the chuck installation of this utility model;

[0030] Figure 6 is a schematic diagram of the card plate connection of this utility model;

[0031] Figure 7 is a schematic diagram of the fixing of the limiting ring of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Chassis; 2. Drive shaft; 201. Mounting plate; 3. Spindle; 301. Slot; 4. Drive block; 401. Sliding groove; 402. First rack; 5. Chuck; 501. Connecting block; 502. Sliding block; 503. Second rack; 6. Fixed post; 601. Lead screw; 602. Clamping plate; 603. Connecting post; 604. Limit ring. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of this utility model will be described below based on its overall structure.

[0036] First embodiment:

[0037] Please refer to Figures 1-6. The machine includes a chassis 1. A drive shaft 2 is mounted on one side of the chassis 1. A spindle 3 is located at one end of the drive shaft 2. Three sets of drive blocks 4 are movably arranged inside the spindle 3. A sliding groove 401 is formed inside each drive block 4. A sliding block 502 is installed inside the sliding groove 401. A connecting block 501 is fixed to the top of the sliding block 502. A chuck 5 is located at the top of the connecting block 501. Two sets of fixing posts 6 are arranged inside the chuck 5. A connecting post 603 is connected to one end of each fixing post 6. A lead screw 601 is located at the end of each connecting post 603. A clamping plate 602 is fitted onto the outer wall of the lead screw 601. This design solves the problem of the limited product range of CNC machine tools due to the fixed-size design of existing spindle fixtures. To address the issue of increasing the diameter of the object held by the chuck 5, the operator inserts a hex wrench into the fixing post 6. The fixing post 6 rotates the lead screw 601 via the connecting post 603, causing the clamping plate 602, which is sleeved on the outer wall of the lead screw 601, to move downwards and into the sliding block 502. Then, the operator pulls the chuck 5 towards the top of the sliding groove 401 and moves it towards the outer side of the inner wall of the sliding groove 401. The operator then uses the hex wrench again to drive the fixing post 6, causing the lead screw 601 connected to the end of the fixing post 6 to move the clamping plate 602 upwards, so that the two sets of clamping plates 602 are inserted into the two sets of clamping slots 301 located at the port of the sliding groove 401, thereby completing the adjustment and fixing of the chuck 5.

[0038] In the above embodiment, please refer to Figures 1 and 2 for details. One end of the drive shaft 2 is connected to the mounting plate 201, and the outer wall of the mounting plate 201 is provided with multiple sets of bolt holes. The drive shaft 2 is fixedly installed on one side of the outer wall of the chassis 1 through the mounting plate 201, and the mounting plate 201 is installed and fixed with bolts.

[0039] In the above embodiment, please refer to Figures 3 and 4 for details. The top of the drive block 4 is provided with a first rack 402, and the bottom of the chuck 5 is installed with a second rack 503. When the personnel adjust the position of the chuck 5, the drive block 4 and the chuck 5 are fixed by the snap-fit ​​between the first rack 402 and the second rack 503, so that when the personnel use a hex wrench to drive the fixing post 6, the chuck 5 and the drive block 4 will not slide, thus making it convenient for the personnel to install and fix the chuck 5 inside the drive block 4.

[0040] In the above embodiment, please refer to Figure 6 for details. The inner wall of the fixing column 6 is hexagonal, and the fixing column 6 is movably disposed inside the chuck 5. Personnel can drive the fixing column 6 to rotate by inserting a hexagonal wrench into the fixing column 6.

[0041] In the above embodiment, please refer to Figure 5 for details. The inner wall of the sliding groove 401 is provided with three sets of slots 301, and the three sets of slots 301 are equally spaced. By inserting two sets of card plates 602 into two sets of adjacent slots 301, the clamping diameter of the three sets of chucks 5 can be adjusted.

[0042] In the above embodiment, please refer to Figure 5 for details. The sliding block 502 is set as an isosceles trapezoid, and the size of the sliding groove 401 is larger than the size of the sliding block 502. The sliding block 502 can move up and down inside the sliding groove 401, which facilitates the personnel to adjust the position of the chuck 5.

[0043] In the above embodiment, please refer to Figure 5 for details. The height of the first rack 402 is less than the distance between the sliding groove 401 and the sliding block 502. When the chuck 602 moves into the sliding block 502, the operator can pull the chuck 5 outward from the sliding groove 401, so that the second rack 503 at the bottom of the chuck 5 and the first rack 402 at the top of the drive block 5 move away from each other, so that the operator can adjust the position of the chuck 5.

[0044] In the above embodiment, please refer to Figure 3 for details. The three sets of chucks 5 are set at equal intervals, and the central angle between the three sets of chucks 5 is 120 degrees. The drive system inside the spindle 3 drives the chucks 5 synchronously through the drive block 4, so that the three sets of chucks 5 clamp the object.

[0045] Second embodiment:

[0046] Please refer to Figure 7. A limit ring 604 is fixed to the outer wall of the connecting column 603, and the limit ring 604 is movably disposed in the connecting block 501. When the hex wrench rotates inside the fixed column 6, the connecting block 501 controls the connecting column 603 through the limit ring 604, so that the fixed column 6 will not slide up and down, thus making it convenient for personnel to drive the fixed column 6 to rotate using a hex wrench.

[0047] In practical operation, when the diameter of the object held by the chuck 5 increases, the operator inserts a hex wrench into the fixed post 6 and then rotates the hex wrench, causing the fixed post 6 to rotate through the connecting post 603 and drive the lead screw 601 to rotate. During the rotation of the lead screw 601, the clamping plate 602 sleeved on the outer wall of the lead screw 601 moves downward, causing the clamping plate 602 to move into the sliding block 502. Then, the operator pulls the chuck 5 outward from the sliding groove 401, causing the second rack 503 at the bottom of the chuck 5 and the first rack 402 at the top of the driving block 5 to move away from each other. Then, the chuck 5 moves to the outer side of the inner wall of the sliding groove 401. The operator again uses the hex wrench to drive the fixed post 6 to rotate, causing the lead screw 601 connected to the end of the fixed post 6 to drive the clamping plate 602 upward, so that the two sets of clamping plates 602 are inserted into the two sets of clamping slots 301 located at the port of the sliding groove 401, thereby completing the adjustment and fixing of the chuck 5.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A clamp for facilitating adjustment comprising a housing (1) characterised in that: A drive shaft (2) is installed on one side of the chassis (1). A main shaft (3) is provided at one end of the drive shaft (2). Three sets of drive blocks (4) are movably arranged inside the main shaft (3). A sliding groove (401) is opened inside the drive block (4). A sliding block (502) is installed inside the sliding groove (401). A connecting block (501) is fixed on the top of the sliding block (502). A chuck (5) is provided at the top of the connecting block (501). Two sets of fixing posts (6) are provided inside the chuck (5). A connecting post (603) is connected to one end of the fixing post (6). A lead screw (601) is provided at the end of the connecting post (603). A clamping plate (602) is sleeved on the outer wall of the lead screw (601).

2. A clamp for easy adjustment according to claim 1, characterized in that: One end of the drive shaft (2) is connected to a mounting plate (201), and the outer wall of the mounting plate (201) is provided with multiple sets of bolt holes.

3. The adjustable clamp of claim 1, wherein: The top of the drive block (4) is provided with a first rack (402), and the bottom of the chuck (5) is provided with a second rack (503).

4. The adjustable clamp of claim 1, wherein: The inner wall of the fixing column (6) is hexagonal, and the fixing column (6) is movably disposed inside the chuck (5).

5. The adjustable clamp of claim 1, wherein: The inner wall of the sliding groove (401) is provided with three sets of slots (301), and the three sets of slots (301) are equally spaced.

6. The adjustable clamp of claim 1, wherein: The sliding block (502) is configured as an isosceles trapezoid, and the size of the sliding groove (401) is larger than the size of the sliding block (502).

7. The adjustable clamp of claim 3, wherein: The height of the first rack (402) is less than the distance between the sliding groove (401) and the sliding block (502).

8. The adjustable clamp according to claim 1, characterized in that: The three sets of chucks (5) are set at equal intervals, and the central angle between the three sets of chucks (5) is 120 degrees.

9. The adjustable clamp of claim 1, wherein: The outer wall of the connecting column (603) is fixed with a limiting ring (604), and the limiting ring (604) is movably disposed in the connecting block (501).

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