Efficient grinding device and machining method for marine material cylindrical compression sample

Abstract

The invention provides an efficient grinding device and machining method for a marine material cylindrical compression sample. The efficient grinding device comprises a base and a clamping device, and the clamping device is arranged at the upper end of the base; the clamping device comprises a left inner clamping piece and a right inner clamping piece, a plurality of first grooves are uniformly formed in the left inner clamping piece, a plurality of second grooves are uniformly formed in the right inner clamping piece, and the first grooves and the second grooves are in one-to-one correspondence and are used for clamping cylindrical compression samples; an avoiding groove is formed in the base, and the lower end face of the cylindrical compression sample abuts against the bottom wall of the avoiding groove; the clamping device further comprises a locking bolt used for locking and fixing the left inner clamping piece and the right inner clamping piece. When a sample is machined, the workpiece does not need to be disassembled, machining of the two end faces of the sample can be completed only by turning over the clamping device, a plurality of samples can be machined at a time, the machining efficiency is greatly improved, and meanwhile it can be ensured that the perpendicularity and parallelism of the two end faces of the machined sample are kept consistent.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal material sample processing, in particular to a high-efficiency grinding device and processing method for a marine material cylindrical compression sample. BACKGROUND

[0002] The cylindrical compression sample is a standard sample for testing key mechanical properties such as compression strength, compression yield strength and compression elastic modulus, and is widely used in the fields of aerospace, shipbuilding, automobile manufacturing and biomedical treatment.

[0003] Since the compression test is prone to slight bending deformation of the sample due to the coaxiality or roughness of the end of the sample, the sample is unstable and the test result is invalid, therefore, the processing requirements of the sample in the test standards (GB / T7314 "Metal Material Compression Test Method at Room Temperature", ASTM E9 "Standard Test Method for Compression Test of Metallic Materials at Room Temperature") are extremely high: the parallelism, flatness and perpendicularity of the two end faces of the sample to the cylindrical axis must strictly meet the standard requirements to prevent the occurrence of invalid results.

[0004] At present, the sample is mainly processed by using a sawing machine, a numerical control lathe, a numerical control grinding machine and a wire cutting machine. The rough process can be divided into blanking, turning an outer circle, wire cutting an end face and fine grinding an end face. Among them, the processing technology of blanking, turning an outer circle and wire cutting an end face is relatively mature, and the surface roughness and size tolerance of the whole ring can be better guaranteed. At present, the processing method of the end face of the compression sample is to adsorb the sample to a surface grinder by using a flat mouth vice, then to grind the end face by using the flat mouth vice to clamp a single sample and to keep the parallelism and perpendicularity of the sample, after the end face of one end is processed, the other end is re-clamped for fine grinding, and after the processing is completed, it is necessary to observe whether the end face of the sample meets the requirements of smoothness, parallelism and perpendicularity. These operation processes are complicated and time-consuming and laborious, and seriously affect the processing efficiency and quality, and if the clamping is performed twice during the processing, the parallelism and perpendicularity of the end face may not meet the quality requirements due to slight carelessness. Therefore, in order to improve the processing efficiency and quality of the sample, it is urgent to develop a high-efficiency grinding device and method for the cylindrical compression sample.

[0005] Patent CN210232649U discloses a special fixture for grinding the end face of a cylindrical non-magnetic sample, which can clamp multiple cylindrical samples in a fixed frame at the same time and grind them at the same time, thereby greatly reducing the clamping times and improving the processing efficiency and consistency of the processing size. However, after grinding one end face, the fixture needs to loosen the clamping bolt, take out the sample, turn over the direction, and then re-tighten the clamping bolt for fixation, which is a typical secondary clamping and still cannot overcome the above problems. SUMMARY

[0006] Therefore, the application aims to provide a high-efficiency grinding device and processing method for marine material cylindrical compression samples to solve the problem that the existing device can only clamp one cylindrical compression sample at a time, leading to difficulty in keeping the perpendicularity and parallelism of two end faces of the same specification cylindrical compression sample consistent after processing, and low processing efficiency.

[0007] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0008] A high-efficiency grinding device for marine material cylindrical compression samples comprises a base and a clamping device, the clamping device is arranged at the upper end of the base, and the base is used for limiting the clamping device.

[0009] The clamping device comprises a left inner clamping piece and a right inner clamping piece, a plurality of first grooves are uniformly arranged on the left inner clamping piece, a plurality of second grooves are uniformly arranged on the right inner clamping piece, the first grooves and the second grooves correspond to each other, and the first grooves and the second grooves are used for clamping the cylindrical compression sample.

[0010] The height of the cylindrical compression sample is , the height of the first groove is , and ;

[0011] A clearance groove is arranged on the base, and the lower end face of the cylindrical compression sample abuts against the bottom wall of the clearance groove.

[0012] The clamping device further comprises a locking bolt, and the locking bolt is used for locking and fixing the left inner clamping piece and the right inner clamping piece.

[0013] Further, the clamping device comprises a left outer clamping piece and a right outer clamping piece, a first protrusion is arranged on the left outer clamping piece, a first mounting groove is arranged on the left inner clamping piece, the first protrusion cooperates with the first mounting groove, and the first protrusion and the first mounting groove are used for connecting the left outer clamping piece and the left inner clamping piece.

[0014] A second protrusion is arranged on the right outer clamping piece, a second mounting groove is arranged on the right inner clamping piece, the second protrusion cooperates with the second mounting groove, and the second protrusion and the second mounting groove are used for connecting the right outer clamping piece and the right inner clamping piece.

[0015] Further, the first protrusion and the second protrusion are T-shaped straight slot rails, the first mounting groove and the second mounting groove are T-shaped straight sliding grooves, and the first groove and the second groove are V-shaped grooves.

[0016] Further, a right baffle is arranged at the rear end of the right outer clamping piece, the right baffle is used for limiting the right inner clamping piece, a left baffle is arranged at the rear end of the left outer clamping piece, and the left baffle is used for limiting the left inner clamping piece.

[0017] Further, the left outer clamping piece is provided with a first reverse threaded hole, the left inner clamping piece is provided with a second reverse threaded hole, the right inner clamping piece is provided with a second positive threaded hole, the right outer clamping piece is provided with a first positive threaded hole, and the locking bolt passes through the first positive threaded hole, the second positive threaded hole, the second reverse threaded hole and the first reverse threaded hole in sequence to connect and fix the right outer clamping piece, the right inner clamping piece, the left inner clamping piece and the left outer clamping piece together.

[0018] Further, the locking bolt comprises a first locking bolt and a second locking bolt, the first locking bolt is arranged close to the front end of the clamping device, and the second locking bolt is arranged close to the rear end of the clamping device.

[0019] Further, the base is provided with corresponding left and right positioning sliding blocks at the upper end, the left positioning sliding block is located at the left side of the accommodation groove, and the right positioning sliding block is located at the right side of the accommodation groove.

[0020] The lower end of the left outer clamping piece is provided with a left sliding groove, the lower end of the right outer clamping piece is provided with a right sliding groove, the left positioning sliding block is matched with the left sliding groove and used for mounting and fixing between the left outer clamping piece and the base, and the right positioning sliding block is matched with the right sliding groove and used for mounting and fixing between the right outer clamping piece and the base.

[0021] Further, the left positioning sliding block comprises a first left positioning sliding block and a second left positioning sliding block, the first left positioning sliding block is arranged close to the front end of the base, the second left positioning sliding block is arranged close to the rear end of the base, the left sliding groove comprises a first left sliding groove and a second left sliding groove, the first left sliding groove is arranged close to the front end of the left outer clamping piece, the second left sliding groove is arranged close to the rear end of the left outer clamping piece, the first left positioning sliding block is matched and mounted with the first left sliding groove, and the second left positioning sliding block is matched and mounted with the second left sliding groove.

[0022] The right positioning sliding block comprises a first right positioning sliding block and a second right positioning sliding block, the first right positioning sliding block is arranged close to the front end of the base, the second right positioning sliding block is arranged close to the rear end of the base, the right sliding groove comprises a first right sliding groove and a second right sliding groove, the first right sliding groove is arranged close to the front end of the right outer clamping piece, the second right sliding groove is arranged close to the rear end of the right outer clamping piece, the first right positioning sliding block is matched and mounted with the first right sliding groove, and the second right positioning sliding block is matched and mounted with the second right sliding groove.

[0023] Further, the clamping device further comprises a left adjustable fixed pressing plate and a right adjustable fixed pressing plate, the left adjustable fixed pressing plate is used for fixing between the left outer clamping piece and the left inner clamping piece, and the right adjustable fixed pressing plate is used for fixing between the right outer clamping piece and the right inner clamping piece.

[0024] The left adjustable fixed pressing plate comprises a left pressing plate, a height lifting bolt and a pressing bolt, the left pressing plate is provided with a first left screw hole and a second left screw hole, and the front end of the left outer clamping piece is provided with a left fixed screw hole; the height lifting bolt connects and fixes the left pressing plate and the left outer clamping piece through the first left screw hole and the left fixed screw hole, and the pressing bolt limits the left inner clamping piece through the second left screw hole.

[0025] The fixing mode of the right adjustable fixed pressing plate is the same as that of the left adjustable fixed pressing plate.

[0026] The application also provides a processing method of the marine material cylindrical compression sample, and the method comprises the following steps by using the high-efficiency grinding device of the marine material cylindrical compression sample:

[0027] Step 1: rough processing of the cylindrical compression sample blank, using an external grinding machine to grind the outer diameter of the blank to the set size;

[0028] Step 2: installing the left inner clamping piece on the left outer clamping piece, and then fixing the left inner clamping piece and the left outer clamping piece by using the left adjustable fixed pressing plate; installing the right inner clamping piece on the right outer clamping piece, and then fixing the right inner clamping piece and the right outer clamping piece by using the right adjustable fixed pressing plate;

[0029] Step 3: placing the base on the horizontal plane, placing the installed clamping device on the base through the left positioning sliding block and the right positioning sliding block, and adjusting the clamping device by using the locking bolt;

[0030] Step 4: placing the cylindrical compression sample to be ground in the clamping device in sequence, so that the lower end surface of the cylindrical compression sample abuts against the bottom wall of the accommodation groove, then tightening the locking bolt, and then taking down the clamping device;

[0031] Step 5: starting the magnetic chuck of the grinding machine, fixing the vice on the workbench, placing the clamping device on the vice, aligning the center position of the clamping device with the center position of the upper end surface of the jaw, grinding the first end surface of the cylindrical compression sample, loosening the vice, turning over the clamping device, aligning the center position of the clamping device with the center position of the upper end surface of the jaw, and grinding the second end surface of the cylindrical compression sample;

[0032] Step 6: taking down the clamping device after the processing is completed.

[0033] Compared with the prior art, the high-efficiency grinding device of the marine material cylindrical compression sample and the processing method have the following advantages:

[0034] 1) When processing the cylindrical compression sample, the two end surfaces of the sample can be processed by only turning over the clamping device without disassembling the workpiece, thereby saving the tedious process of repeated single clamping in the traditional processing;

[0035] 2) can ensure that the perpendicularity and parallelism of the two end faces of the cylindrical compression sample after processing are consistent, and a plurality of samples can be processed at one time, greatly improving the processing efficiency;

[0036] 3) The inner clamping part is convenient to disassemble as a whole, and when grinding, the inner clamping part with different groove sizes can be replaced according to the cylindrical compression sample 100 with different diameters, so that a tool for different specifications of samples is not needed, and the application range of the device is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The structure schematic view of the grinding device is shown in the embodiment of the application;

[0038] Figure 2 The exploded structure schematic view is shown in the embodiment of the application; Figure 1

[0039] Figure 3 The structure schematic view of another view is shown in the embodiment of the application; Figure 2

[0040] Figure 4 The cooperation structure schematic view of the left inner clamping part and the cylindrical compression sample is shown in the embodiment of the application; Figure 1

[0041] The local enlarged structure schematic view of A in the embodiment of the application is shown in the embodiment of the application; Figure 5 Figure 4 The structure schematic view of the left adjustable fixed pressing plate in the embodiment of the application is shown in the embodiment of the application;

[0042] Figure 6 Figure 1 The structure schematic view of the second size of the inner clamping part in the embodiment of the application is shown in the embodiment of the application;

[0043] Figure 7 The third size of the inner clamping part in the embodiment of the application is shown in the embodiment of the application. Figure 1

[0044] Figure 8 Figure 1

[0045] The reference signs are explained as follows:

[0046] ​​​​​​​1. Base; 10. Relief groove; 11. Left positioning slider; 111. First left positioning slider; 112. Second left positioning slider; 12. Right positioning slider; 121. First right positioning slider; 122. Second right positioning slider; 2. Clamping device; 3. Left inner clamping member; 30. Left outer clamping member; 301. First protrusion; 302. Left baffle; 303. First reverse thread hole; 304. Left slide groove; 3041. First left slide groove; 3042. Second left slide groove; 305. Left fixing screw hole; 31. First groove; 32. First mounting groove; 33. Second reverse thread hole; 4. Right inner... Clamping component; 40. Right outer clamping component; 401. Right baffle; 402. First positive threaded hole; 403. Right sliding groove; 4031. First right sliding groove; 4032. Second right sliding groove; 41. Second protrusion; 42. Second groove; 43. Second mounting groove; 44. Second positive threaded hole; 5. Locking bolt; 51. First locking bolt; 52. Second locking bolt; 6. Left adjustable fixed pressure plate; 61. Left pressure plate; 611. First left screw hole; 612. Second left screw hole; 62. Height lifting bolt; 63. Pressure bolt; 7. Right adjustable fixed pressure plate; 100. Cylindrical compression specimen. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Example 1

[0049] like Figures 1-6 As shown, this embodiment provides a high-efficiency grinding device for cylindrical compression specimens of marine materials, including a base 1 and a clamping device 2. The clamping device 2 is disposed at the upper end of the base 1, and the base 1 is used to limit the clamping device 2.

[0050] The clamping device 2 includes a left inner clamping member 3 and a right inner clamping member 4. The left inner clamping member 3 is uniformly provided with a plurality of first grooves 31, and the right inner clamping member 4 is uniformly provided with a plurality of second grooves 42. The first grooves 31 and the second grooves 42 correspond one-to-one and are used to clamp the cylindrical compression sample 100.

[0051] The height of the cylindrical compression specimen 100 is The height of the first groove 31 is ,and ;

[0052] The base 1 is provided with a clearance slot 10, and the lower end surface of the cylindrical compression sample 100 abuts against the bottom wall of the clearance slot 10.

[0053] The clamping device 2 further comprises a locking bolt 5 for locking and fixing the left inner clamping piece 3 and the right inner clamping piece 4.

[0054] Specifically, this arrangement facilitates the overall disassembly of the inner clamping piece, and during grinding, the inner clamping piece of different groove sizes can be replaced, facilitating the effective clamping of cylindrical compression samples 100 of different diameters, such as Figures 7-8 as shown, Figure 7 The inner clamping piece shown is suitable for clamping samples with a larger diameter, Figure 8 The inner clamping piece shown is suitable for clamping samples with a smaller diameter, and there is no need to design a tooling for different specifications of samples, thereby expanding the application range of the device.

[0055] By providing the clearance slot 10, it can be ensured that the cylindrical compression sample 100 has its upper and lower end surfaces protruding above the end surfaces of the groove during clamping, forming positioning avoidance. By designing a shortened groove height, the two end surfaces of the workpiece to be machined are actively left with a machining space without tooling obstruction, avoiding physical interference of the tooling itself on the machining of the two end surfaces, thereby achieving the need to complete the machining of the two end surfaces without disassembling the workpiece and only flipping the clamping device 2, saving the tedious process of repeated single clamping in traditional machining. This arrangement can ensure that the perpendicularity and parallelism of the two end surfaces of the cylindrical compression sample after machining remain consistent, and multiple samples can be machined at one time, greatly improving the machining efficiency.

[0056] Preferably, the first groove 31 and the second groove 42 have the same size.

[0057] As a preferred example of the present application, the clamping device 2 comprises a left outer clamping piece 30 and a right outer clamping piece 40, the left outer clamping piece 30 is provided with a first protrusion 301, the left inner clamping piece 3 is provided with a first mounting slot 32, the first protrusion 301 cooperates with the first mounting slot 32, and is used for connecting the left outer clamping piece 30 and the left inner clamping piece 3.

[0058] The right outer clamping piece 40 is provided with a second protrusion 41, and the right inner clamping piece 4 is provided with a second mounting slot 43, the second protrusion 41 cooperates with the second mounting slot 43, and is used for connecting the right outer clamping piece 40 and the right inner clamping piece 4.

[0059] Specifically, the matching mode of the protrusions and the mounting grooves belongs to a modular connection structure, and only the protrusions need to be embedded into the mounting grooves for positioning during assembly, without complex alignment or debugging steps; if it is necessary to replace the inner clamping pieces of different groove sizes later, the inner and outer clamping pieces can also be quickly separated, greatly simplifying the assembly and disassembly process of the components and reducing the operation time; and this structure can form accurate positioning and fixing, ensuring that the inner and outer clamping pieces will not slide or deviate relative to each other during sample clamping or grinding, thereby improving the machining precision of the sample.

[0060] As a preferred example of the present application, the first protrusion 301 and the second protrusion 41 are both T-shaped linear groove rails, the first mounting groove 32 and the second mounting groove 43 are both T-shaped linear sliding grooves, and the first groove 31 and the second groove 42 are both V-shaped grooves.

[0061] Specifically, the matching structure of the T-shaped linear groove rail and the T-shaped linear sliding groove only needs to embed the protrusion into the sliding groove in the linear direction for preliminary positioning during assembly, without complex alignment steps, and the first protrusion 301 and the second protrusion 41 can be quickly separated when disassembling and replacing the inner clamping piece, and when the first protrusion 301 and the second protrusion 41 cooperate with the first mounting groove 32 and the second mounting groove 43 which are also T-shaped linear sliding grooves, a "mortise and tenon type" limiting structure can be formed, which can effectively limit the relative movement of the left inner clamping piece 3 and the left outer clamping piece 30, and the right inner clamping piece 4 and the right outer clamping piece 40 in the direction perpendicular to the groove rail, thereby improving the clamping stability of the sample.

[0062] The first groove 31 and the second groove 42 adopt a V-shaped groove design, which has stronger wrapping performance on the cylindrical compression sample 100 than a planar or arc-shaped groove, can form two-point contact with the outer cylindrical surface of the sample through the two sides of the inclined surface, automatically center the sample center, ensure that the axis of the sample remains consistent during clamping, and reduce the end face perpendicularity and parallelism errors caused by sample positioning deviation; at the same time, the V-shaped groove can adapt to cylindrical samples within a certain diameter range, further improving the flexibility of clamping.

[0063] Preferably, 13 V-shaped grooves are arranged on the left inner clamping piece 3 and the right inner clamping piece 4, and the lower end of each V-shaped groove is provided with a chamfer with a size of R1.

[0064] As a preferred example of the present application, the rear end of the right outer clamping piece 40 is provided with a right baffle 401 for limiting the right inner clamping piece 4, and the rear end of the left outer clamping piece 30 is provided with a left baffle 302 for limiting the left inner clamping piece 3.

[0065] Specifically, this arrangement can ensure that the left inner clamping piece 3 and the left outer clamping piece 30, and the right inner clamping piece 4 and the right outer clamping piece 40 are always in the preset position during assembly, avoiding the first groove 31 and the second groove 42 from failing to accurately correspond due to installation deviation of the inner clamping piece, thereby ensuring the position consistency of the cylindrical compression sample 100 during clamping, and reducing the processing errors caused by component misplacement.

[0066] As a preferred example of the present application, the left outer clamping piece 30 is provided with a first reverse threaded hole 303, the left inner clamping piece 3 is provided with a second reverse threaded hole 33, the right inner clamping piece 4 is provided with a second positive threaded hole 44, the right outer clamping piece 40 is provided with a first positive threaded hole 402, and the locking bolt 5 passes through the first positive threaded hole 402, the second positive threaded hole 44, the second reverse threaded hole 33, and the first reverse threaded hole 303 in sequence to connect and fix the right outer clamping piece 40, the right inner clamping piece 4, the left inner clamping piece 3, and the left outer clamping piece 30 together.

[0067] Specifically, this design can make the left and right clamping pieces approach each other by turning the locking bolt 5, thereby playing a role in clamping the cylindrical compression sample 100. After locking, the overall clamping device 2 can be removed from the base 1 and clamped on the vice for grinding. When it is necessary to remove the clamping device 2 or adjust the clamping force, the locking bolt 5 can be turned in the opposite direction to make the two clamping pieces separate synchronously, which is simple and convenient to operate. Compared with the traditional way of disassembling by multiple bolts respectively, this integrated locking and disassembling design not only saves operation time, but also maintains the relative position relationship of each component during adjustment, thereby reducing the calibration time during subsequent reassembly.

[0068] As a preferred example of the present application, the locking bolt 5 includes a first locking bolt 51 and a second locking bolt 52, the first locking bolt 51 is arranged close to the front end of the clamping device 2, and the second locking bolt 52 is arranged close to the rear end of the clamping device 2.

[0069] Specifically, during the grinding process, the clamping device 2 will be subjected to the vibration of the grinding machine and the grinding force. This arrangement can fix the right outer clamping piece 40, the right inner clamping piece 4, the left inner clamping piece 3, and the left outer clamping piece 30 from the front and rear positions, effectively limiting the relative displacement of each component in the front-rear direction, and avoiding the loosening or deformation of the overall structure due to external force. This stable connection state can ensure that the clamping force continuously acts on the cylindrical compression sample 100, preventing the sample from shifting during processing, and ensuring the stability of the processing process.

[0070] As a preferred example of the present application, the base 1 is provided with corresponding left and right positioning sliding blocks 11 and 12, the left positioning sliding block 11 is located on the left side of the accommodation groove 10, and the right positioning sliding block 12 is located on the right side of the accommodation groove 10.

[0071] The lower end of the left outer clamping piece 30 is provided with a left sliding groove 304, and the lower end of the right outer clamping piece 40 is provided with a right sliding groove 403. The left positioning sliding block 11 is matched with the left sliding groove 304, and is used for mounting and fixing between the left outer clamping piece 30 and the base 1. The right positioning sliding block 12 is matched with the right sliding groove 403, and is used for mounting and fixing between the right outer clamping piece 40 and the base 1.

[0072] Specifically, the arrangement can provide a clear positioning reference for the installation of the clamping device 2 on the base 1, ensure that the left outer clamping piece 30 and the right outer clamping piece 40 are always in the preset position corresponding to the accommodation groove 10, avoid the installation deviation of the clamping device 2, and ensure that the first groove 31 and the second groove 42 are accurately matched with the sample, thereby reducing the subsequent processing error.

[0073] As a preferred example of the present application, the left positioning sliding block 11 includes a first left positioning sliding block 111 and a second left positioning sliding block 112. The first left positioning sliding block 111 is arranged near the front end of the base 1, and the second left positioning sliding block 112 is arranged near the rear end of the base 1. The left sliding groove 304 includes a first left sliding groove 3041 and a second left sliding groove 3042. The first left sliding groove 3041 is arranged near the front end of the left outer clamping piece 30, and the second left sliding groove 3042 is arranged near the rear end of the left outer clamping piece 30. The first left positioning sliding block 111 is matched and installed with the first left sliding groove 3041, and the second left positioning sliding block 112 is matched and installed with the second left sliding groove 3042.

[0074] The right positioning sliding block 12 includes a first right positioning sliding block 121 and a second right positioning sliding block 122. The first right positioning sliding block 121 is arranged near the front end of the base 1, and the second right positioning sliding block 122 is arranged near the rear end of the base 1. The right sliding groove 403 includes a first right sliding groove 4031 and a second right sliding groove 4032. The first right sliding groove 4031 is arranged near the front end of the right outer clamping piece 40, and the second right sliding groove 4032 is arranged near the rear end of the right outer clamping piece 40. The first right positioning sliding block 121 is matched and installed with the first right sliding groove 4031, and the second right positioning sliding block 122 is matched and installed with the second right sliding groove 4032.

[0075] Specifically, the arrangement can limit the installation posture of the clamping device 2 on the base 1 from the front and rear positions, avoid the front end or rear end deviation or inclination of the clamping device 2, and ensure that the first groove 31 of the left inner clamping piece 3 is accurately matched with the second groove 42 of the right inner clamping piece 4, thereby improving the subsequent processing accuracy.

[0076] As a preferred example of the present application, the clamping device 2 further comprises a left adjustable fixed pressing plate 6 and a right adjustable fixed pressing plate 7, the left adjustable fixed pressing plate 6 is used for fixing between the left outer clamping piece 30 and the left inner clamping piece 3, and the right adjustable fixed pressing plate 7 is used for fixing between the right outer clamping piece 40 and the right inner clamping piece 4;

[0077] The left adjustable fixed pressing plate 6 comprises a left pressing plate 61, a height lifting bolt 62 and a pressing bolt 63, the left pressing plate 61 is provided with a first left screw hole 611 and a second left screw hole 612, and the front end of the left outer clamping piece 30 is provided with a left fixed screw hole 305; the height lifting bolt 62 connects and fixes the left pressing plate 61 and the left outer clamping piece 30 through the first left screw hole 611 and the left fixed screw hole 305, and the pressing bolt 63 limits the left inner clamping piece 3 through the second left screw hole 612.

[0078] The fixing mode of the right adjustable fixed pressing plate 7 is the same as that of the left adjustable fixed pressing plate 6.

[0079] Specifically, this arrangement can avoid the clamping difficulty caused by the overall length error of different types of inner clamping pieces, and can prevent the inner clamping piece from loosening or deviating when the grinding processing is affected by vibration or processing force, so as to ensure that the first recess 31 and the second recess 42 always correspond accurately, avoid the clamping misplacement of the cylindrical compression specimen 100, and further ensure the parallelism and perpendicularity of the end surface of the specimen.

[0080] The application also provides a processing method of a marine material cylindrical compression specimen, which adopts the high-efficiency grinding device of the marine material cylindrical compression specimen.

[0081] Step 1: rough machining a blank of the cylindrical compression specimen 100, and grinding the outer diameter of the blank to a set size by using an external grinding machine;

[0082] Step 2: installing the left inner clamping piece 3 on the left outer clamping piece 30, and then fixing the left inner clamping piece 3 and the left outer clamping piece 30 by using the left adjustable fixed pressing plate 6; installing the right inner clamping piece 4 on the right outer clamping piece 40, and then fixing the right inner clamping piece 4 and the right outer clamping piece 40 by using the right adjustable fixed pressing plate 7;

[0083] Step 3: placing the base 1 on a horizontal plane, placing the installed clamping device 2 on the base 1 through the left positioning sliding block 11 and the right positioning sliding block 12, and adjusting the clamping device 2 by using the locking bolt 5;

[0084] Step 4: placing the cylindrical compression specimen 100 to be ground in the clamping device 2 in sequence, so that the lower end surface of the cylindrical compression specimen 100 abuts against the bottom wall of the accommodation groove 10, then tightening the locking bolt 5, and then taking down the clamping device 2;

[0085] Step 5: Start the magnetic chuck of the grinder, fix the vice on the workbench, place the clamping device 2 on the vice, align the center position of the clamping device 2 with the center position of the upper end surface of the jaw, loosen the vice after grinding the first end surface of the cylindrical compression specimen 100, turn over the clamping device 2, align the center position of the clamping device 2 with the center position of the upper end surface of the jaw, and grind the second end surface of the cylindrical compression specimen 100.

[0086] Step 6: After the processing is completed, remove the clamping device 2.

[0087] Specifically, the processing method of the marine material cylindrical compression specimen can complete the end surface grinding of the cylindrical compression specimen 100 with different diameters under the premise of ensuring the parallelism, flatness and perpendicularity to the cylindrical axis, effectively ensures the processing quality of the specimen, and realizes the high-quality and high-efficiency processing of the cylindrical compression specimen 100 with different sizes.

[0088] Preferably, in step 3, when the clamping device 2 is adjusted by the locking bolt 5, the distance between the first groove 31 and the second groove 42 is slightly greater than the diameter of the cylindrical compression specimen, so that the cylindrical compression specimen can be placed between the first groove 31 and the second groove 42.

[0089] The inventor processed 60 cylindrical compression specimens by using the grinding device designed by the application. In order to compare with the previous processing method, the inventor also processed 60 cylindrical compression specimens by using the conventional method, and the material of the specimens is Ti80 titanium alloy. The specific processing data is shown in the following table, wherein Table 1 is the processing test result by using the method of the application, and Table 2 is the processing test result by using the conventional method.

[0090]

[0091] Table 1

[0092]

[0093] Table 2

[0094] It can be seen from the above processing test results that the processing method of the application saves a lot of clamping time, and the processing quality of the specimen is obviously improved. It can be seen that, compared with the conventional method, the grinding device and the grinding method of the application can complete the processing of the cylindrical compression specimen 100 with high quality and high efficiency.

[0095] Although the application is disclosed as above, the application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the application, and therefore the protection scope of the application should be subject to the scope defined by the claims.

Claims

1. A high-efficiency grinding device for a marine material cylindrical compression specimen, characterized by, Including base (1) and clamping device (2), the clamping device (2) is arranged at the upper end of base (1), and the base (1) is used to limit the clamping device (2); The clamping device (2) includes left inner clamping part (3) and right inner clamping part (4), a plurality of first grooves (31) are uniformly arranged on the left inner clamping part (3), a plurality of second grooves (42) are uniformly arranged on the right inner clamping part (4), the first grooves (31) and the second grooves (42) are one-to-one corresponding, and the cylindrical compression sample (100) is used for clamping; The height of the cylindrical compression sample (100) is , the height of the first groove (31) is , and ; The base (1) is provided with a let slot (10), and the lower end surface of the cylindrical compression sample (100) is in abutment with the bottom wall of the let slot (10); The clamping device (2) further includes a locking bolt (5), and the locking bolt (5) is used for locking and fixing the left inner clamping part (3) and the right inner clamping part (4).

2. The high efficiency grinding device for marine material cylindrical compression specimens according to claim 1, characterized in that, The clamping device (2) includes left outer clamping part (30) and right outer clamping part (40), the left outer clamping part (30) is provided with a first protrusion (301), the left inner clamping part (3) is provided with a first mounting groove (32), the first protrusion (301) is matched with the first mounting groove (32), and the left outer clamping part (30) and the left inner clamping part (3) are connected; The right outer clamping part (40) is provided with a second protrusion (41), the right inner clamping part (4) is provided with a second mounting groove (43), the second protrusion (41) is matched with the second mounting groove (43), and the right outer clamping part (40) and the right inner clamping part (4) are connected.

3. The high efficiency grinding device for marine material cylindrical compression specimens according to claim 2, characterized in that, The first protrusion (301) and the second protrusion (41) are T-shaped linear groove rails, the first mounting groove (32) and the second mounting groove (43) are T-shaped linear sliding grooves, and the first groove (31) and the second groove (42) are V-shaped grooves.

4. The high efficiency grinding device for marine material cylindrical compression specimens of claim 2, wherein, The rear end of the right outer clamping part (40) is provided with a right baffle (401), the right baffle (401) is used for limiting the right inner clamping part (4), and the rear end of the left outer clamping part (30) is provided with a left baffle (302), the left baffle (302) is used for limiting the left inner clamping part (3).

5. The high efficiency grinding device for marine material cylindrical compression specimens of claim 2, wherein, The left outer clamping part (30) is provided with a first reverse threaded hole (303), the left inner clamping part (3) is provided with a second reverse threaded hole (33), the right inner clamping part (4) is provided with a second positive threaded hole (44), the right outer clamping part (40) is provided with a first positive threaded hole (402), and the locking bolt (5) sequentially passes through the first positive threaded hole (402), the second positive threaded hole (44), the second reverse threaded hole (33) and the first reverse threaded hole (303), so that the right outer clamping part (40), the right inner clamping part (4), the left inner clamping part (3) and the left outer clamping part (30) are connected and fixed together.

6. The high efficiency grinding device for marine material cylindrical compression specimens of claim 5, wherein, The locking bolt (5) includes a first locking bolt (51) and a second locking bolt (52), the first locking bolt (51) is arranged close to the front end of the clamping device (2), and the second locking bolt (52) is arranged close to the rear end of the clamping device (2).

7. The high efficiency grinding device for marine material cylindrical compression specimens of claim 2, wherein, The base (1) is provided with corresponding left positioning sliding block (11) and right positioning sliding block (12) on the upper end, the left positioning sliding block (11) is located on the left side of the left slot (10), and the right positioning sliding block (12) is located on the right side of the left slot (10); The lower end of the left outer clamping piece (30) is provided with a left sliding groove (304), and the lower end of the right outer clamping piece (40) is provided with a right sliding groove (403), the left positioning sliding block (11) is matched with the left sliding groove (304), used for the installation and fixation between the left outer clamping piece (30) and the base (1), and the right positioning sliding block (12) is matched with the right sliding groove (403), used for the installation and fixation between the right outer clamping piece (40) and the base (1).

8. The high efficiency grinding device for marine material cylindrical compression specimens according to claim 7, characterized in that, The left positioning sliding block (11) comprises a first left positioning sliding block (111) and a second left positioning sliding block (112), the first left positioning sliding block (111) is arranged close to the front end of the base (1), the second left positioning sliding block (112) is arranged close to the rear end of the base (1), the left sliding groove (304) comprises a first left sliding groove (3041) and a second left sliding groove (3042), the first left sliding groove (3041) is arranged close to the front end of the left outer clamping piece (30), and the second left sliding groove (3042) is arranged close to the rear end of the left outer clamping piece (30), the first left positioning sliding block (111) is matched and installed with the first left sliding groove (3041), and the second left positioning sliding block (112) is matched and installed with the second left sliding groove (3042). The right positioning sliding block (12) comprises a first right positioning sliding block (121) and a second right positioning sliding block (122), the first right positioning sliding block (121) is arranged close to the front end of the base (1), the second right positioning sliding block (122) is arranged close to the rear end of the base (1), the right sliding groove (403) comprises a first right sliding groove (4031) and a second right sliding groove (4032), the first right sliding groove (4031) is arranged close to the front end of the right outer clamping piece (40), and the second right sliding groove (4032) is arranged close to the rear end of the right outer clamping piece (40), the first right positioning sliding block (121) is matched and installed with the first right sliding groove (4031), and the second right positioning sliding block (122) is matched and installed with the second right sliding groove (4032).

9. The high efficiency grinding device for marine material cylindrical compression specimens of claim 2, wherein, The clamping device (2) further comprises a left adjustable fixed pressing plate (6) and a right adjustable fixed pressing plate (7), the left adjustable fixed pressing plate (6) is used for the fixation between the left outer clamping piece (30) and the left inner clamping piece (3), and the right adjustable fixed pressing plate (7) is used for the fixation between the right outer clamping piece (40) and the right inner clamping piece (4). The left adjustable fixed pressing plate (6) comprises a left pressing plate (61), a height lifting bolt (62) and a pressing bolt (63), the left pressing plate (61) is provided with a first left screw hole (611) and a second left screw hole (612), and the front end of the left outer clamping piece (30) is provided with a left fixed screw hole (305); the height lifting bolt (62) connects and fixes the left pressing plate (61) and the left outer clamping piece (30) through the first left screw hole (611) and the left fixed screw hole (305), and the pressing bolt (63) limits the left inner clamping piece (3) through the second left screw hole (612); The right adjustable fixed pressing plate (7) is fixed in the same way as the left adjustable fixed pressing plate (6).

10. A method for processing a marine material cylindrical compression test specimen using the high-efficiency grinding device for a marine material cylindrical compression test specimen according to any one of claims 1 to 9, characterized by, The method comprises the following steps: Step 1: rough machining of the blank of the cylindrical compression sample (100), using an external grinding machine to grind the outer diameter of the blank to the set size; Step 2: install the left inner clamping piece (3) on the left outer clamping piece (30), and then use the left adjustable fixed pressing plate (6) to fix the left inner clamping piece (3) and the left outer clamping piece (30); install the right inner clamping piece (4) on the right outer clamping piece (40), and then use the right adjustable fixed pressing plate (7) to fix the right inner clamping piece (4) and the right outer clamping piece (40); Step 3: place the base (1) on the horizontal plane, place the installed clamping device (2) on the base (1) through the left positioning sliding block (11) and the right positioning sliding block (12), and adjust the clamping device (2) by using the locking bolt (5); Step 4: place the cylindrical compression sample (100) to be ground in the clamping device (2) in sequence, so that the lower end surface of the cylindrical compression sample (100) abuts against the bottom wall of the accommodation groove (10), then tighten the locking bolt (5), and then remove the clamping device (2); Step 5: start the magnetic chuck of the grinding machine, fix the vice on the workbench, place the clamping device (2) on the vice, align the center position of the clamping device (2) with the center position of the upper end surface of the jaw, grind the first end surface of the cylindrical compression sample (100), loosen the vice, turn over the clamping device (2), align the center position of the clamping device (2) with the center position of the upper end surface of the jaw, and grind the second end surface of the cylindrical compression sample (100); Step 6: after the processing is completed, remove the clamping device (2).

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