Fixture for longitudinal metallographic specimen of wire rod

Abstract

The clamp comprises a positioning base, sample clamping plates are connected to the upper end face of the positioning base, the sample clamping plates are symmetrically arranged, a clamp groove is formed between the symmetrical sample clamping plates, and metallographic sample clamping holes are formed in the sample clamping plates at intervals. Axes of two sample clamping holes in each front group and each rear group in metallographic sample clamping holes in the sample clamping plate are consistent, the metallographic sample clamping holes clamp wire samples with the diameter being 5-10 mm, the metallographic sample clamping holes are of a circular groove or V-shaped groove structure, the positioning base and the sample clamping plate are connected in a detachable mode, and the two ends of the positioning base and the sample clamping plate are connected through bolts. The electromagnetic chuck plane of the surface grinding machine is used for absorbing the clamp of the metallographic specimen, the grinding wheel of the surface grinding machine operates and grinds in the groove of the clamp, stability and reliability are achieved, precision is high, and the purpose of processing the specimen is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal material sample preparation equipment, and particularly relates to a fixture for longitudinal metallographic specimens of wire. Background Art

[0002] When detecting non-metallic inclusions in wire with a small specification of Φ5-Φ10 according to GB / T 10561, the specimen needs to be processed into a longitudinal specimen, and the processed surface of the specimen is the longitudinal surface. Due to the small diameter of the wire, it is not easy to clamp during sample preparation, and the processing difficulty is large. Currently, a bench vice is used for clamping, and only one sample is clamped each time, and machine tool processing is adopted. There are problems such as only one specimen can be clamped and processed each time, resulting in low efficiency; when the bench vice clamps small samples, it is not firm and is easy to fly out and hurt people, with poor safety; after milling, the surface of the sample is not smooth, the processing accuracy is low, and the subsequent grinding amount is large.

[0003] In view of the above factors, a fixture for longitudinal metallographic specimens of wire is specially designed, which can clamp multiple groups of samples at one time to improve efficiency; and the clamping is firm to improve safety. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixture for longitudinal metallographic specimens of wire to solve the problems put forward in the above background art.

[0005] The purpose of the utility model is realized by the following technical solutions: A fixture for longitudinal metallographic specimens of wire, including a positioning base, the upper end surface of the positioning base is connected with clamping plates, the clamping plates are symmetrically arranged, and a fixture groove is formed between the symmetric clamping plates;

[0006] The clamping plates are provided with metallographic specimen clamping holes at intervals, the axes of two clamping holes in each of the front / rear groups in the metallographic specimen clamping holes on the clamping plates are the same, and the metallographic specimen clamping holes clamp wire samples with a diameter of Φ5-Φ10mm.

[0007] Further, the metallographic specimen clamping holes are of a circular groove or V-shaped groove structure.

[0008] Further, the positioning base and the clamping plates are detachably connected by bolts at both ends.

[0009] Further, the positioning base and the clamping plates are connected by welding.

[0010] Further, through top screw holes are opened at positions on the upper end surface of the clamping plates opposite to the metallographic specimen clamping holes, the top screw holes are of a threaded hole structure, and positioning screws are screwed and connected in the top screw holes.

[0011] Further, anti-wear positioning connecting plates are detachably connected to both ends of the positioning base.

[0012] Further, open positioning grooves are arranged on both sides of the bottom surface of the positioning base in the arrangement direction of the metallographic specimen clamping holes, and the open positioning grooves are of rectangular groove structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model can firmly clamp multiple samples at one time and can complete processing, improving work efficiency; it can be directly transferred to other machine tools for processing without removing the samples, simplifying the process; when processing samples with it on a grinding machine, the processing accuracy of the samples is improved, the processing amount of subsequent processes is reduced, and time is saved.

[0015] The present utility model clamps samples firmly, ensuring operation safety; it has the characteristics of simple structure, convenient use, low manufacturing difficulty, low manufacturing cost, strong expandability, safe operation, high processing accuracy of samples, and high work efficiency. Description of the Drawings

[0016] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional schematic diagram of the present utility model with open positioning grooves;

[0018] Figure 3 is a schematic plan view of the present utility model for installing specimens;

[0019] Figure 4 is a mating schematic diagram of the present utility model with an anti-wear positioning connecting plate. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1-4 shown, a fixture for longitudinal metallographic specimens of wire rods includes a positioning base 1, and a clamping plate 2 is connected to the upper end surface of the positioning base 1. The clamping plates 2 are symmetrically arranged, and a fixture groove is formed between the symmetric clamping plates 2;

[0022] The clamping plates 2 are provided with metallographic specimen clamping holes 3 at intervals. The axes of every two clamping holes in the front / rear groups among the metallographic specimen clamping holes 3 on the clamping plates 2 are the same, and the metallographic specimen clamping holes 3 clamp wire rod samples with a diameter of Φ5 - Φ10 mm.

[0023] In order to facilitate the positioning and fixing of the specimen through the set metallographic specimen clamping hole 3 in the use state, the metallographic specimen clamping hole 3 is a circular groove or a V-shaped groove structure.

[0024] In order to facilitate detachable replacement in the use state, the positioning base 1 and the clamping plate 2 are connected in a detachable manner by bolts at both ends.

[0025] In order to facilitate according to different usage requirements in the use state, the positioning base 1 and the clamping plate 2 are connected by welding.

[0026] In order to facilitate positioning the specimen in the use state, a through set screw hole is provided at the relative position of the upper end face of the clamping plate 2 and the metallographic specimen clamping hole 3. The set screw hole is a threaded hole structure, and a positioning screw 4 is screwed and connected in the set screw hole.

[0027] In order to facilitate directly placing it on a band saw for cutting and positioning at both ends without disassembling the specimen in the use state, when the positioning base is worn, both ends of the positioning base 1 are detachably connected with anti-wear positioning connecting plates 5.

[0028] In order to facilitate in the use state, an open positioning groove 6 is provided to reduce the overall weight. At the same time, a positioning block is installed through the open positioning groove 6. The positioning block is arranged in imitation of the open positioning groove 6 and is fixed by bolts. A counterbore structure is provided on the positioning block and is fixed by bolts. Open positioning grooves 6 are provided on both sides of the bottom surface of the positioning base 1 along the arrangement direction of the metallographic specimen clamping holes 3. The open positioning groove 6 is a rectangular groove structure.

[0029] Wherein, the height of the positioning block is greater than the height of the open positioning groove 6, so as to avoid serious wear of the positioning base 1 after long-term use in the use state and affect the sawing effect of each specimen during sawing.

[0030] The size of the positioning base 1 is a steel plate of 180X110X18 (mm); the clamping plate (2) has a size of a steel plate of 180X30X15 (mm).

[0031] The axes of the two clamping holes of each group of the fixtures for metallographic specimens are consistent, so that the sample can pass through smoothly, and wire samples with a diameter of Φ5 - Φ10MM can be clamped.

[0032] The fixture for the longitudinal metallographic specimen of the present utility model can expand the use range of the fixture according to the size of the surface grinder and the number of samples. The number of clamping holes can be increased, or the clamping plate can be fixed by screws. The clamping holes of the clamping plate adopt a V-shaped groove structure to increase the clamping diameter specification.

[0033] The fixture for the longitudinal metallographic specimen of the present utility model processes the specimen on a surface grinder, and without disassembling the specimen, it can be directly placed on a band saw for cutting, which is convenient and easy to use.

[0034] The material is 45# high-quality carbon structural steel plate, which is skillfully applied to a surface grinder with an electromagnetic chuck. The grinding wheel of the surface grinder runs and grinds in the fixture groove, being stable, reliable and with high precision, achieving the purpose of processing samples.

[0035] In the present utility model, the fixture is designed with a concave groove in cross-sectional shape, and the total height shall not be higher than two-fifths of the thickness of the grinding wheel, otherwise collisions will occur during grinding; the groove width shall not be 50 mm, which is greater than the width of the grinding wheel by 30 mm.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for longitudinal metallographic specimens of wire rods, characterized in that: It includes a positioning base (1), and the upper end surface of the positioning base (1) is connected to a clamping template (2). The clamping templates (2) are symmetrically arranged, and a fixture groove is formed between the symmetric clamping templates (2). The clamping template (2) is provided with metallographic specimen clamping holes (3) at intervals. The axes of every two clamping holes in each front / rear group among the metallographic specimen clamping holes (3) on the clamping template (2) are consistent. The metallographic specimen clamping holes (3) clamp wire samples (7) with a diameter of Φ5-Φ10mm.

2. The fixture for the longitudinal metallographic specimen of the wire rod according to claim 1, characterized in that, The metallographic specimen clamping holes (3) are of a circular groove or V-shaped groove structure.

3. The fixture for the longitudinal metallographic specimen of the wire rod according to claim 2, characterized in that, The positioning base (1) and the clamping template (2) are detachably connected by bolts at both ends.

4. The fixture for the longitudinal metallographic specimen of the wire rod according to claim 2, wherein The positioning base (1) and the clamping template (2) are connected by welding.

5. The fixture for longitudinal metallographic specimen of wire according to claim 3 or 4, characterized in that, A through set screw hole is opened at the relative position of the upper end surface of the clamping template (2) and the metallographic specimen clamping hole (3). The set screw hole is of a threaded hole structure, and a positioning screw (4) is screwed and connected in the set screw hole.

6. The fixture for the longitudinal metallographic specimen of the wire rod according to claim 2, wherein, Both ends of the positioning base (1) are detachably connected to wear-resistant positioning connecting plates (5).

7. The fixture for the longitudinal metallographic specimen of the wire rod according to claim 2, wherein, Open positioning grooves (6) are arranged on both sides of the bottom surface of the positioning base (1) in the arrangement direction of the metallographic specimen clamping holes (3). The open positioning grooves (6) are of a rectangular groove structure.

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