Auxiliary clamp for milling and grinding machine to machine low-power sample

Abstract

The utility model relates to an auxiliary clamp for a milling and grinding machine to machine a low-power sample. The auxiliary clamp comprises a workbench backup plate, a height adjusting air cylinder, a clamping air cylinder, a workbench pressing plate, a sample blank, a structural frame, an adjusting rod, a turncap 71, a containing cavity, a height adjusting hole, supporting legs, an up-down adjusting hole and a threaded hole. By means of the clamp, the milling and grinding requirements of square billets, rectangular billets and round billets can be met at the same time, and sample billets can be adjusted in the horizontal direction, the vertical direction and the height direction; the thickness of the square billet and the thickness of the rectangular billet can be reduced by means of the up-down adjusting holes, the carrying difficulty is avoided after the thickness is reduced, the sample billets are convenient to take and test, the containing cavities meet the requirement for simultaneous machining of the sample billets, the working time is greatly shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This patent application belongs to the technical field of machine tool fixtures. More specifically, it relates to an auxiliary fixture for machining low magnification specimens on a milling and grinding machine. Background Art

[0002] The low magnification laboratory in the iron and steel industry is used for macroscopic inspection, that is, visually or with the aid of a magnifying glass with a magnification of less than 10 times to inspect the structure and defects of metals. It is an important and simple method for controlling the product quality of metal materials and researching casting and processing technologies.

[0003] The technological process of the low magnification experiment is as follows: Receive specimens according to the requirements of the "Specimen Receiving Specification" and carefully fill in the "Sample Receiving Inspection Registration Record". Use a band saw to saw the specimens, and perform milling and grinding on the specimens to make the surface meet the requirements of the acid pickling test. The inspection surface shall not have oil stains, processing scars, and heat affected zones. The surface roughness meets the requirements. Conduct acid pickling corrosion low magnification inspection, rinsing, drying, coding and numbering. Use a line scanner or photographic equipment to image the specimens after low magnification inspection and evaluate the specimens. Enter the evaluation results into the system, and store the inspected specimens in the waste sample storage area.

[0004] Before the sample blank undergoes a low magnification detection experiment, the detection surface needs to be processed first. Only when the inspection surface of the sample blank meets the experimental requirements can the low magnification inspection be carried out. If you want to expand the scope of experimental capabilities, you must find a way to process the inspection surface of the sample blank.

[0005] The main processing equipment used for processing the detection surface in low magnification inspection is a milling and grinding machine. Its functions are: removing the processing stress generated by shearing or flame cutting and the tissue changes brought about by the thermal reaction, ensuring the consistency of the characteristics of the specimen and the sample blank, and the surface roughness meets the requirements of the inspection process.

[0006] When the enterprise initially built the low magnification laboratory, the original plan was to only conduct low magnification detection experiments on hot rolled slab blanks. Now, with the successive commissioning of the long product department and special steel department of the company, the quality requirements have increased accordingly. The working scope of the low magnification laboratory has expanded, and it needs to be responsible for the low magnification macroscopic structure detection tasks of hot rolled slab blanks, special steel square blanks, rectangular blanks, and round blanks, and be responsible for issuing evaluation and detection reports externally. The laboratory plays an important technical support service for the hot rolled production line, special steel production line, technical process, inspection and maintenance, etc. Therefore, it is necessary to expand the working scope of the milling and grinding machine to adapt to the changes in production.

[0007] The existing milling and grinding machines do not have the ability to process square blanks, rectangular blanks, and round blanks, and cannot achieve the positioning and clamping of incoming samples, nor can they achieve the milling and grinding of sample blanks. To meet this working requirement, it is necessary to develop a new type of fixture to bridge the difference between the original fixture and the size of the sample blank, so as to match and meet the size requirements of the sample blank and successfully complete the detection requirements of various sample blanks. Summary of the Utility Model

[0008] The technical problem to be solved by the present utility model is to provide an auxiliary fixture for machining low magnification specimens on a milling and grinding machine. Through this new fixture, the machining range of the milling and grinding machine can be expanded, and the machining tasks of the inspection surfaces of square billets, rectangular billets, and round billets can be realized, meeting the inspection requirements of the company's products.

[0009] To solve the above problems, the technical solution adopted by the present utility model is as follows:

[0010] An auxiliary fixture for machining low magnification specimens on a milling and grinding machine, placed on the workbench of the milling and grinding machine, includes a structural frame, a plurality of accommodating cavities arranged on the upper plane of the structural frame, a height adjustment mechanism on the workbench corresponding to the accommodating cavities, a plurality of support legs arranged on the left and right sides of the structural frame, a plurality of horizontal adjustment mechanisms arranged between the support legs on the same side, and a vertical adjustment mechanism arranged on the upper and lower sides of the structural frame. A sample blank is placed in the accommodating cavity, and the sample blank is located on the height adjustment mechanism;

[0011] The horizontal adjustment mechanism is used to clamp and position the sample blank in the horizontal direction. The horizontal adjustment mechanism includes a threaded hole arranged on the side of the structural frame, an adjustment rod screwed to the threaded hole, and an abutting portion arranged at the end of the adjustment rod. The abutting portion is used to abut against the sample blank, and a knob is arranged at the other end of the adjustment rod;

[0012] The vertical adjustment mechanism is used to clamp and fix the structural frame. The vertical adjustment mechanism includes a workbench backing plate in contact with the upper end of the structural frame, a plurality of clamping cylinders in contact with the lower end of the structural frame, and a workbench pressing plate connected to the fixed ends of all the clamping cylinders;

[0013] The height adjustment mechanism is used to adjust the sample blank to be horizontal and fixed in the height direction. The height adjustment mechanism includes a height adjustment cylinder located on the workbench and a height adjustment hole arranged on the height adjustment cylinder. The height adjustment cylinder is below the structural frame and the sample blank, and the top of the sample blank cooperates with the cylinder head on the workbench.

[0014] Further, there are 2 to 4 accommodating cavities, and the accommodating cavities are arranged in a row or vertically on the upper plane of the structural frame.

[0015] Further, the structural frame is a cuboid, its material is high-strength structural steel, and the specification of the structural frame is 455 mm × 240 mm × 100 mm.

[0016] Further, the support legs are arranged on the left and right sides of the structural frame and are L-shaped support legs.

[0017] Further, the abutting portion is made of a flexible material (such as rubber or silicone gasket, etc.).

[0018] Further, the adjustment rod is 45# threaded steel.

[0019] Furthermore, the workbench backrest and the workbench pressing plate are both long strip steel plates.

[0020] Furthermore, a plurality of up-and-down adjustment holes are provided at the bottom of each accommodating cavity, about 3 to 5.

[0021] Due to the adoption of the above technical solution, the beneficial effects obtained by the present utility model are as follows:

[0022] The device has a simple structure, low manufacturing cost, and easy replacement of parts, enabling the milling and grinding machine to simultaneously meet the milling and grinding requirements of square billets, rectangular billets, and round billets, and enabling the sample billets to be adjusted in the horizontal, vertical, and height directions. The provided up-and-down adjustment holes are used for the up-and-down adjustment of the internal sample billets. In the event that the sample billet is thinner than the fixture and cannot be exposed from the fixture, screws can be placed in the up-and-down adjustment holes and the sample billet can be padded from the inside. This ensures that the thickness of the square billet and the rectangular billet can be further reduced. After the thickness is reduced, the difficulty of handling is avoided, facilitating the placement and removal of the sample billets and the tests. The existence of multiple accommodating cavities satisfies the simultaneous processing of multiple sample billets, greatly reducing the working time, improving the work efficiency, and meeting the processing technology requirements of the milling and grinding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the use effect of the present device.

[0024] Figure 2 It is a schematic diagram of the structure of the present device after removing one sample billet.

[0025] Figure 3 It is a schematic diagram of the structure of the present device.

[0026] Figure 4 It is a schematic diagram of the use effect of the present device on the workbench.

[0027] Among them: workbench backrest 1, height adjustment cylinder 2, clamping cylinder 3, workbench pressing plate 4, sample billet 5, structural frame 6, adjustment rod 7, cap 71, accommodating cavity 8, height adjustment hole 9, support leg 10, up-and-down adjustment hole 11, threaded hole 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further elaborates on the present utility model in conjunction with embodiments.

[0029] An auxiliary fixture for machining low-magnification specimens on a milling and grinding machine, which is placed on the workbench of the milling and grinding machine for use. The idea of the present device is as follows: As Figures 1 to 4, including a structural frame 6, a plurality of accommodating cavities 8 arranged on the upper plane of the structural frame 6, a height adjustment mechanism arranged on the workbench and corresponding to the accommodating cavities 8, a plurality of support legs 10 arranged on the left and right sides of the structural frame 6, a plurality of horizontal adjustment mechanisms arranged between the support legs 10 on the same side, and a vertical adjustment mechanism arranged on the upper and lower sides of the structural frame 6. A sample blank 5 is placed in the accommodating cavity 8, and the sample blank 5 is located on the height adjustment mechanism. Referring to Figure 3 Among them, the support legs 10 are arranged on the left and right sides of the structural frame 6, and they are all L-shaped support legs. Of course, one can be an L-shaped support leg and the other can be a plate-shaped or block-shaped one. There are 2 to 4 support legs 10 on the same side. The structural frame 6 is a cuboid, and its material is selected as high-strength structural steel. The specification of the structural frame 6 can be 455 mm × 240 mm × 100 mm.

[0030] There are 2 to 4 accommodating cavities 8, and the number can also be more. Figure 1 , Figure 2 There are 2 in . The 2 accommodating cavities 8 are arranged side by side in a row on the upper plane of the structural frame 6. If there are 4 accommodating cavities 8, they can be arranged left and right, up and down.

[0031] The horizontal adjustment mechanism is used to clamp and position the sample blank 5 in the horizontal direction. The horizontal adjustment mechanism includes a threaded hole 12 arranged on the side of the structural frame 6, an adjustment rod 7 screwed to the threaded hole 12, and an abutting portion (not shown in the figure) arranged at the end of the adjustment rod 7. The abutting portion is used to abut against the sample blank 5. A nut 71 is arranged at the other end of the adjustment rod 7, and the number of the adjustment rods 7 is multiple. Figure 1 There are 2 adjustment rods 7 in . The abutting portion is made of a flexible material (such as a rubber gasket) to avoid damaging the sample blank 5. The adjustment rod 7 is made of 45# threaded steel. In Figure 3 Among them, the large notch beside the threaded hole 12 is used to adapt to the matching cylinder on the workbench.

[0032] The vertical adjustment mechanism is used to clamp and fix the structural frame 6. The vertical adjustment mechanism includes a workbench backing plate 1 in contact with the upper end of the structural frame 6, a plurality of clamping cylinders 3 in contact with the lower end of the structural frame 6, and a workbench pressing plate 4 connected to the fixed ends of all the clamping cylinders 3. The workbench backing plate 1 and the workbench pressing plate 4 are both long strip-shaped steel plates, and their lengths are longer than that of the structural frame 6.

[0033] The height adjustment mechanism is used to adjust the sample blank 5 to be horizontal and fixed in the height direction. The height adjustment mechanism includes a height adjustment cylinder 2 located on the workbench and a height adjustment hole 9 arranged on the height adjustment cylinder 2. The height adjustment cylinder 2 is below the sample blank 5, and the top of the sample blank 5 is matched with the cylinder head on the workbench. The height adjustment hole 9 is provided with the height adjustment cylinder 2 as a supporting part. By inputting height adjustment parameters into the height adjustment cylinder 2 and combining with the height adjustment hole 9, the overall height of the sample blank 5 is adjusted on the workbench, which is a mature technology.

[0034] To improve the usage effect, multiple up-and-down adjustment holes 11 are provided at the bottom of each accommodating cavity 8, such as 3 to 5. By inserting a screw rod into the up-and-down adjustment hole 11, the sample blank 5 is padded up to expose the fixture, so as to adapt to sample blanks 5 of different thicknesses.

[0035] During use, the workbench backing plate 1, the clamping cylinder 3, the workbench pressing plate 4, the height adjustment cylinder 2, and the height adjustment hole 9 are all located on the workbench. The workbench backing plate 1, the clamping cylinder 3, and the workbench pressing plate 4 are used to horizontally fix the auxiliary fixture, such as Figure 4 The height adjustment cylinder 2 and the height adjustment hole 9 are used to horizontally adjust and fix the sample blank 5 in the auxiliary fixture in the height direction as a whole. And the up-and-down adjustment hole 11 is used to pad up the sample blank 5.

[0036] When manufacturing this device:

[0037] First, design a large frame so that the height adjustment cylinder 2, the structural frame 6, and the sample blank 5 can be adapted to each other to complete the preliminary positioning.

[0038] After the preliminary positioning is achieved, effective clamping is carried out. The sample blank 5 is placed in the accommodating cavity 8 of the structural frame 6, and the up-and-down adjustment hole 11 is appropriately padded up according to the situation, and then the sample blank 5 is fixed and clamped through the corresponding adjustment mechanism. When the sample blank 5 is fixed, the principle of not less than three-point effective positioning should be followed, that is, effective positioning should be available in the horizontal, vertical, and height directions. The sample blank 5 can be a square blank, a rectangular blank, or a round blank (cylinder). For a round blank, special attention should be paid during fixation. If necessary, tap it with a hammer to check whether it is firm, meeting the process requirements for the machine tool fixture to fix the workpiece.

[0039] Then, the sample blank 5 contacts two adjacent inner sides of the accommodating cavity 8. For example, the sample blank 5 approaches and contacts the upper right of the left accommodating cavity 8, and another sample blank 5 approaches and contacts the upper left of the right accommodating cavity 8. The other two sides of the sample 5 are fixed by the adjusting rods 7, and the structural frame 6 below the sample blank 5 is supported, fixed, and leveled by the height adjustment cylinder 2, the height adjustment hole 9, etc.

[0040] After the height adjustment cylinder 2 and the height adjustment hole 9 of this new type of fixture are axially aligned, they are placed on the workbench of the milling and grinding machine. One side of the structural frame 6 without the adjustment mechanism (that is Figure 1At the upper-middle position), it is pressed tightly against the workbench backrest 1, and the other side of the structural frame 6 is pressed tightly by the clamping cylinder 3 and the workbench pressing plate 4. The overall height of the fixture is adjusted by the height adjustment cylinder 2, positioned on the workbench of the milling and grinding machine, and the fixture is clamped. There are also other supporting cylinders on the workbench. For example, the cylinder head on the workbench is clamped to the top of the sample blank 5. The cylinder head on the workbench will also observe through its own height adjustment hole 9 whether it is effectively pressed and firmly pressed, so as to realize functions such as height adjustment, positioning, and fastening of the sample blank 5, meeting the processing technology requirements of the milling and grinding machine.

Claims

1. An auxiliary fixture for processing low-magnification specimens on a milling and grinding machine, placed on a workbench of the milling and grinding machine, characterized in that: The invention comprises a structural frame (6), a plurality of accommodating cavities (8) arranged on a plane above the structural frame (6), a height adjustment mechanism arranged on a workbench and corresponding to the accommodating cavities (8), a plurality of supporting legs (10) arranged on the left and right sides of the structural frame (6), a plurality of horizontal adjustment mechanisms arranged between the supporting legs (10) on the same side, and a vertical adjustment mechanism arranged on the upper and lower sides of the structural frame (6); a sample blank (5) is placed in the accommodating cavity (8), and the sample blank (5) is located on the height adjustment mechanism; The horizontal adjustment mechanism is used to clamp and position the sample blank (5) in the horizontal direction, and comprises a threaded hole (12) arranged on the side of the structural frame (6), an adjustment rod (7) screwed to the threaded hole (12), and an abutment portion arranged at the end of the adjustment rod (7), the abutment portion being used to abut the sample blank (5), and a screw cap (71) being provided at the other end of the adjustment rod (7); The vertical adjustment mechanism is used to clamp and fix the structural frame (6), and the vertical adjustment mechanism comprises a workbench support plate (1) in contact with the upper end of the structural frame (6), a plurality of clamping cylinders (3) in contact with the lower end of the structural frame (6), and a workbench pressure plate (4) connected to the fixed ends of all the clamping cylinders (3); The height adjustment mechanism is used to adjust the level and fix the sample blank (5) in the height direction, and the height adjustment mechanism comprises a height adjustment cylinder (2) located on the workbench, and a height adjustment hole (9) arranged on the height adjustment cylinder (2). The height adjustment cylinder (2) is located below the sample blank (5), and the top of the sample blank (5) cooperates with the cylinder head on the workbench.

2. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: There are 2 to 4 accommodating chambers (8), which are arranged in a row on the upper plane of the structural frame (6).

3. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: The structural frame (6) is a rectangular parallelepiped and is made of high-strength structural steel. The specifications of the structural frame (6) are 455 mm×240 mm×100 mm.

4. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: The support legs (10) are arranged on the left and right sides of the structural frame (6) and are L-shaped support legs.

5. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: The abutting portion is made of flexible material.

6. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: The adjustment rod (7) is made of 45# threaded steel.

7. The auxiliary fixture for machining low-magnification specimens by a milling and grinding machine according to claim 1, characterized in that: The workbench backing plate (1) and the workbench pressing plate (4) are both long strip steel plates.

8. The auxiliary fixture for machining low-magnification specimens using a milling and grinding machine according to any one of claims 1 to 7, characterized in that: A plurality of upper and lower adjustment holes (11) are also provided at the bottom of each accommodating cavity (8).

Images