Small metal bar cutting clamp

Abstract

The invention discloses a small metal bar cutting clamp, and belongs to the technical field of metal machining clamps. The clamp mainly comprises a clamping frame body, a replaceable clamping block set, a clamping mechanism and a clamp fixing mechanism. By the adoption of the replaceable clamping blocks of different specifications, various metal bars with the diameter ranging from 5 mm to 20 mm can be reliably clamped, and the cutting requirements of the bars of different sizes are effectively met. The clamping mechanism can provide stable and adjustable clamping force, it is guaranteed that bars are firmly fixed in the cutting process, vibration and displacement are avoided, and the situation that the surfaces of the bars are damaged due to the fact that the clamping force is too large is avoided. The device is reasonable in structural design, easy and convenient to operate and high in loading and unloading efficiency, remarkably improves the cutting precision, surface quality and operation safety of small metal bars, and is particularly suitable for laboratories, small-batch machining, prototyping and other scenes.

Description

Technical Field

[0001] This invention relates to the field of metalworking fixtures, and in particular to a fixture device for fixing small metal bars for cutting. Background Technology

[0002] Metal bars are an essential raw material in various industries such as machinery manufacturing, civil engineering, and construction. These industries frequently require cutting metal bars to specific lengths for further processing or use. The quality of the cutting directly affects the precision of subsequent processing and the quality of the final product.

[0003] Samples can be cut using various methods such as shearing, sawing, and cutting. Commonly used tools include metallographic cutting machines, band saws, electric drills, hand saws, or wire cutting equipment, which are used to cut samples from larger blocks of material and then send them to the laboratory to complete the final cutting and other sample preparation steps.

[0004] During the abrasive wheel cutting process, there should be a continuous circulation of cooling lubricant. This not only results in a smoother cutting surface but also effectively prevents the material from undergoing thermal deformation due to overheating.

[0005] The abrasive cutting discs used in metallographic cutting machines should be selected according to the manufacturer's recommendations. For example, for general tool steel, carburized steel with a hardness of 60 HRC or higher, steel with a hardness of around 50 HRC, steel with a hardness of 35-50 HRC, steel with a hardness of 15-35 HRC, or mild steel and annealed steel with a hardness of 50-90 HRB, tool steel, hard steel and high-temperature alloys with a hardness of less than 45 HRC, alumina (Al2O3) abrasive cutting discs are recommended; while for non-ferrous alloys, such as medium-hardness metals like titanium, aluminum, and magnesium, silicon carbide (SiC) abrasive cutting discs are recommended.

[0006] The abrasive particles in grinding wheels are primarily alumina or silicon carbide, and common binders include resin, rubber, or a mixture of both. Alumina grinding wheels are more suitable for cutting ferrous metals, while silicon carbide grinding wheels are better suited for non-ferrous metals and ores. Furthermore, grinding wheels are differentiated by their bond strength; manufacturers typically recommend products based on suitable bond strength and the type of material being cut.

[0007] At the same time, it is also necessary to select a suitable diameter and thickness of abrasive wheel cutting disc according to the size of the sample to be cut and the sampling requirements. This is one of the key factors in obtaining high-quality samples.

[0008] The preparation of cylindrical metal specimens is widely used in industrial fields, including experimental setups and prototype fabrication. Small cylindrical specimens are typically cut from larger metal bars using a cutting machine. However, during the cutting process, the metal bar is susceptible to vibration and shaking, leading to problems such as bent cuts or uneven surfaces.

[0009] Based on the above background, the main problems existing in the current metal bar cutting process are:

[0010] 1. Limited Applicability of General-Purpose Clamps: In the prior art, the utility model patent with authorization announcement number "CN203448770U" discloses a fully automatic CNC pipe cutting machine, which cuts pipes using a circular saw mounted above the work platform. While convenient for cutting single pipes, it is difficult to clamp multiple pipes when cutting them in batches. Especially for small metal bars with diameters of 5-20mm, existing clamps often fail to provide effective and stable clamping.

[0011] 2. Difficulty in adapting to different sized bars: Traditional clamping methods typically use two V-shaped surfaces, two semi-circular surfaces, or three-jaw chucks. The manufacturing process of these clamping elements is complex, costly, and cumbersome to install and remove. Existing auxiliary clamps have a fixed distance between the clamps, making it difficult to clamp metal parts of different lengths and unable to securely hold and fix them.

[0012] 3. Easily damages the surface of the bar stock: For light metals such as germanium, aluminum, and tin, the cutting force is relatively small, the required clamping force is also small, and the loading and unloading are frequent during processing. Traditional fixture structures cannot meet the processing requirements of these metals, and the bar stock surface is easily damaged due to excessive clamping force, or the cutting accuracy is affected due to insufficient clamping force.

[0013] 4. Low operational efficiency: Most existing fixtures are not designed with the need for quick loading and unloading in mind, which results in loading and unloading time exceeding cutting time during batch processing, thus reducing production efficiency.

[0014] This invention was developed under this technical background. Through innovative structural design, it solves the above-mentioned technical problems and provides an efficient, safe and dedicated clamping solution for cutting small metal bars. Summary of the Invention

[0015] To address the aforementioned problems, a small metal bar cutting fixture is proposed. This invention alleviates the issue of fixture adaptability to a wide range of sizes, ensuring that it can accommodate metal bars of different diameters (5-20mm) by changing the clamping blocks. The cylindrical shape of the metal bar is securely fixed during the cutting process, resulting in precise and uniform cutting of the metal bar, while also maintaining the flatness of the bottom surface of the cut metal bar as much as possible.

[0016] The clamping frame forms the basic structure of the device and is designed to securely hold metal bar samples of varying diameters. It is typically made of durable materials, such as steel or aluminum, to withstand cutting forces and maintain stability. The clamping mechanism comprises a clamping frame, two clamping blocks, and three hex socket head cap screws, which easily secure the metal bar sample. The clamps are equipped with high-strength screws, allowing the user to hold the cylindrical metal bar with the required amount of pressure. This provides a sufficiently tight and stable frictional force on the metal bar sample, minimizing sample vibration and the resulting minor misalignments during cutting.

[0017] To achieve the above objectives, the following technical solution is adopted: a small metal bar cutting fixture.

[0018] (1) Select appropriate clamping blocks according to the diameter of the metal bar to be clamped;

[0019] (2) Pass the metal bar through the clamping frame;

[0020] (3) Place the appropriate clamping block into the clamping frame and clamp the metal bar with the internal hex screws;

[0021] (4) Fix the fixture to the cutting machine with screws and then cut;

[0022] (5) After cutting, first remove the device and take out the metal sample, then take out the metal sample and place it in the correct position for easy use next time.

[0023] The significant advantages of this invention are:

[0024] (1) Enhanced precision: By providing a stable and vibration-free environment for the metal cylindrical bar during the cutting process, the equipment ensures accurate and uniform cutting results, meeting the requirements of various experimental applications.

[0025] (2) Saves time and costs: The precise cutting provided by this fixture reduces material waste, thereby saving production costs. In addition, it minimizes the need for rework or additional processing, saving time and resources.

[0026] (3) Wide range of applications: the appropriate clamping blocks can be replaced according to metal bars of different diameters.

[0027] (4) Improved safety: The secure clamping of metal bar samples reduces the risk of accidents or injuries that may occur due to accidental movement during the cutting process, thereby improving workplace safety. Attached Figure Description

[0028] To better illustrate the usage method and technical solution of the present invention, the accompanying drawings will be briefly described in conjunction with the embodiments and related technical solutions.

[0029] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention, including the sample;

[0030] Figure 2 This is a side view of the overall structure of the first embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the first embodiment of the present invention without a sample;

[0032] Figure 4 These are three views of the clamping frame of the first embodiment of the present invention;

[0033] Figure 5 These are the three views of the clamping block in the first embodiment of the present invention; Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0035] The first embodiment of this application is as follows:

[0036] Please refer to Figures 1-5. Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention, including the sample; Figure 2 This is a side view of the overall structure of the first embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first embodiment of the present invention without a sample, including a clamping frame body (1), a first clamping block (2A), a second clamping block (2B), a metal bar sample body (3), a first clamping block fastening screw (4A), a second clamping block fastening screw (4B), and a clamp fixing screw (4C). Figure 4 These are three views of the clamping frame of the first embodiment of the present invention; Figure 5 These are the three views of the clamping block in the first embodiment of the present invention;

[0037] This invention is a small metal bar cutting fixture to facilitate the cutting and preparation of metal samples in experiments. Its specific usage steps are as follows:

[0038] Step 1: Select a clamping block (2) of appropriate size according to the diameter of the metal bar (3) to be cut, and place the clamping block (2) into the clamping frame (1).

[0039] Step 2: Place the metal bar sample (3) between the clamping frame (1) and the clamping block (2), and adjust the clamping block and the sample to securely position the metal sample and ensure that it remains in the proper position during the cutting process;

[0040] Step 3: Once the metal specimen is correctly positioned, tighten the provided hex socket screws (4A & 4B). The clamping force can be adjusted according to the characteristics of the cylindrical metal specimen and the cutting requirements; if necessary, the mounting position of the device can be adjusted to ensure proper alignment and a clean, accurate cut without any tilting.

[0041] Step 4: Fasten the clamping frame, align the cutter with the sample, and then fix the clamping frame on the cutting machine.

[0042] Step 5: After cutting, first remove the device, then take out the metal sample and store it in its proper place for future use.

[0043] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A small metal bar cutting fixture, characterized in that, include: The clamping frame body (1) forms the basic frame structure of the clamp; the replaceable clamping block group includes at least a first clamping block (2A) and a second clamping block (2B), the clamping blocks are detachably installed inside the clamping frame body (1) to adapt to metal bar samples (3) of different diameters. The clamping mechanism consists of at least a first clamping block fastening screw (4A) and a second clamping block fastening screw (4B), and is used to fasten the metal bar sample (3) placed between the clamping frame body (1) and the clamping block; The clamp fixing mechanism includes at least one clamp fixing screw (4C) for fixing the entire clamp to the cutting machine worktable.

2. The small metal bar cutting fixture according to claim 1, characterized in that, The replaceable clamping block assembly comes in various specifications, with its V-shaped opening size corresponding to metal bars with diameters ranging from 5mm to 20mm. By replacing the clamping blocks of different specifications, it can be adapted to bars of different diameters.

3. The small metal bar cutting fixture according to claim 1 or 2, characterized in that, The clamping frame body (1) is provided with a guide structure to ensure accurate positioning of the clamping block during installation and facilitate the loading and unloading of bar samples.

4. The small metal bar cutting fixture according to claim 1, characterized in that, The clamping frame body (1) and the replaceable clamping blocks are made of steel or aluminum alloy.

5. The small metal bar cutting fixture according to claim 1, characterized in that, The clamping mechanism uses hexagonal socket screws to provide clamping force, which can be adjusted according to the material of the bar stock and the cutting requirements.

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