A high-efficiency and rapid sampling aid and sampling method for a drug-shaped liner

Abstract

The present invention discloses an auxiliary tool and a sampling method for efficient and rapid sampling of a charge liner, wherein the auxiliary tool comprises: a longitudinal cutting support auxiliary tool and a transverse cutting clamping auxiliary tool; the longitudinal cutting support auxiliary tool comprises: a placement block, a support base body I and a cushion block I; the transverse cutting clamping auxiliary tool comprises: two mandrels, a support base body II and a cushion block II. The present invention utilizes the longitudinal cutting support auxiliary tool and the transverse cutting clamping auxiliary tool, and adopts a sawing machine to sample the hollow conical charge liner, without the need to modify the sawing machine, and is easy to operate, improves efficiency, and improves sampling accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of metal material detection and sampling, and in particular provides an auxiliary tool for efficient and rapid sampling of a medicine-shaped cap and a sampling method. Background Art

[0002] As the core component of the armor-piercing warhead, the material and performance of the liner have an important impact on the penetration power of the warhead. As a key component of the shaped charge warhead, the liner has a history of more than 50 years of development. 98% of the armor-piercing warheads in service use pure copper liner.

[0003] With the development of new generation explosive reactive armor, ceramic armor, and composite armor, pure copper liner can no longer meet the development needs of high-performance warheads. In recent years, foreign countries have successfully developed high-density functional liner materials such as tantalum alloy, tungsten alloy, and uranium alloy.

[0004] A large number of ballistic test studies have shown that not only the geometric size, accuracy and surface quality of the liner have an impact on the armor-piercing performance, but also its grain size, grain orientation and structure and other internal metallurgical indicators have a great influence on the armor-piercing performance. Therefore, in the process of liner molding, the organizational morphology and grain control of each process are particularly important.

[0005] Therefore, whether it is process optimization of old models of liner or pre-research and development of new models, a large amount of testing and evaluation of the performance of the liner is required, and a large number of test samples are required. Therefore, efficient and rapid sampling of the liner can save time for the research and development of the liner.

[0006] At present, the most commonly used sampling methods for charge liners are the following two: one is electric spark molybdenum wire cutting, which can perform automatic cutting after program setting, but the cutting time is long, which is not conducive to improving efficiency; the other is manual cutting, which is about twice as efficient as electric spark molybdenum wire cutting, but it consumes manpower, and the size of the cut sample sometimes does not meet the standard or even becomes scrapped. Summary of the invention

[0007] The purpose of the present invention is to solve the problem of low sampling efficiency in the process of developing charge caps by existing methods, and to provide an auxiliary tool for processing charge cap test samples by a band sawing machine. Without changing the existing sawing machine equipment, a fast, convenient and easy-to-operate sample cutting method can be performed to improve efficiency.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An auxiliary tool for efficient and rapid sampling of a medicine liner, comprising: a longitudinal cutting support auxiliary tool and a transverse cutting clamping auxiliary tool;

[0010] The longitudinal cutting support auxiliary device comprises: a placement block 1, a support base Ⅰ2 and a cushion block Ⅰ3; a support base Ⅰ2 is provided on the upper part of the cushion block Ⅰ3, and the support base Ⅰ2 and the cushion block Ⅰ3 are connected by a dovetail keyway connection method 4; a groove 2a is provided in the middle of the upper surface of the support base Ⅰ2, and a placement block 1 is provided in the groove 2a, and the placement block 1 and the support base Ⅰ2 are connected by a keyway connection method 5; a semicircular groove 1a is provided in the middle of the upper surface of the placement block 1; the longitudinal cutting support auxiliary device is used to support and fix one end of the drug liner processing rod during longitudinal cutting;

[0011] The transverse cutting clamping aid comprises: two push rods 6, a support base II7 and a cushion block II8; a support base II7 is provided on the upper part of the cushion block II8, and the support base II7 and the cushion block II8 are connected by a dovetail keyway connection method 4; the support base II7 is provided with a through hole running through the left and right sides, and the front side of the support base II7 is provided with an opening 7b with a circular arc groove 7a connected to the through hole; the two push rods 6 are inverted T-shaped and symmetrically inserted at both ends of the through hole of the support base II7; the insertion end of the push rod 6 is bonded with hard rubber 9, and the outside is connected to the left and right sides of the support base II7 by a spring 10; the transverse cutting clamping aid is used to clamp and fix the medicine cover during transverse cutting.

[0012] In order to further achieve the purpose of the present invention, the present invention also provides a method for efficient and rapid sampling of a medicine liner using the above-mentioned auxiliary tool, comprising the following steps:

[0013] Step 1: Clean and degrease the surface of the prepared liner blank to ensure that there are no flash or burrs;

[0014] Step 2: Adjust the clamping distance by the sawing machine hand wheel, and the clamping distance should be greater than the longitudinal horizontal length L of the liner;

[0015] Step 3: Select the placement block 1 according to the radius r of the liner processing rod, determine the pad I3 according to the height h from the bottom end of the liner processing rod to the horizontal plane, and then place the cleaned liner longitudinally on the sample placing table of the sawing machine, and place one end of the liner processing rod in the semicircular groove 1a in the longitudinal cutting support auxiliary tool for fixing the position, and the right side of the longitudinal cutting support auxiliary tool is close to the right clamp of the sawing machine;

[0016] Step 4: Adjust the sawing position of the liner, tighten the clamp, select a sawing speed of 35-45m / min, and a sawing efficiency of 20-30cm 2 / min, when cutting to the upper end of the liner processing rod, retract the saw and release the clamp;

[0017] Step 5: Adjust the sawing position of the liner horizontally according to the width of the sample, and repeat step 4;

[0018] Step 6: After the longitudinal sawing is completed, adjust the height H1 of the transverse cutting clamping aid to be the same as h, rotate the liner after step 5 by 90° and place it horizontally, and place the liner processing rod at the arc-shaped groove 7a of the transverse cutting clamping aid. The cutting end position of step 5 is the cutting position of this step, and clamp tightly, select the sawing speed of 35-45m / min, and the sawing efficiency of 20-30cm 2 / min, release the clamp after cutting is completed;

[0019] Step 7: The sample block cut in step 6 is in a rectangular shape, and can be flexibly cut into size using a sawing machine; according to the test requirements, the cubic sample block cut in step 6 is further cut into the required size requirements;

[0020] Step 8: After sampling, remove the auxiliary tool for next use.

[0021] The present invention has the following beneficial effects:

[0022] (1) Using the longitudinal cutting support aid and the transverse cutting clamping aid, a sawing machine is used to sample the hollow conical charge liner. There is no need to modify the sawing machine, which is easy to operate and improves efficiency.

[0023] (2) Compared with the two traditional sampling methods: First, compared with electric spark molybdenum wire cutting, the cutting speed is fast and the efficiency is about 3-4 times that of molybdenum wire cutting; compared with manual cutting with hand saw, it reduces manual errors, improves sampling accuracy, reduces manual labor intensity, and improves cutting efficiency, which is about 1.5-3 times that of manual cutting.

[0024] (3) The auxiliary tool is equipped with a height adjustment part. The height of the pad can be changed according to different types of charge caps. The pad and the supporting base are connected by a dovetail keyway connection method, and the connection is tight and reliable. The auxiliary tool is flexible, fast and easy to operate.

[0025] (4) The placement block used to fix the end of the liner processing rod in the longitudinal cutting support auxiliary device is connected to the support base I by a keyway connection method, which can be flexibly replaced according to different types of liner and is easy to operate.

[0026] (5) The end of the push rod of the transverse cutting clamping auxiliary device is made of hard rubber and bonded to the push rod, which can prevent the push rod from being too hard and causing damage to the liner processing rod during the clamping process.

[0027] (6) The push rod in the horizontal cutting clamping aid is connected to the outside of the support base II by a spring. After the sawing is completed and the clamp is released, the push rod can be automatically reset under the action of the spring, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic diagram of the medicine liner blank of the present invention: L is the longitudinal horizontal length of the medicine liner, r is the radius of the medicine liner processing rod, and h is the height from the bottom end of the medicine liner processing rod to the horizontal plane;

[0029] Figure 2 It is a schematic diagram of the structure of the longitudinal cutting support auxiliary device in the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the transverse cutting clamping auxiliary tool in the present invention;

[0031] Figure 4 for Figure 3 A cross-sectional view of the insertion connection between the middle push rod 6 and the support base II 7;

[0032] Figure 5 Schematic diagram of dovetail keyway connection mode 4 and keyway connection mode 5 in the present invention;

[0033] In the figure: 1. placement block; 1a. semicircular groove; 2. support base I; 2a. groove; 3. pad I; 4. dovetail keyway connection; 5. keyway connection; 6. push rod; 7. support base II; 7a. arc-shaped groove; 7b. opening; 8. pad II; 9. hard rubber; 10. spring. DETAILED DESCRIPTION

[0034] To make the present invention more clear, the following further describes an auxiliary tool and a sampling method for efficient and rapid sampling of a medicine-shaped cover of the present invention in conjunction with the accompanying drawings.

[0035] Example 1

[0036] like Figure 1-5 As shown, an auxiliary tool for efficient and rapid sampling of a medicine-type liner includes: a longitudinal cutting support auxiliary tool and a transverse cutting clamping auxiliary tool.

[0037] The longitudinal cutting support auxiliary device comprises: a placement block 1, a support base Ⅰ2 and a cushion block Ⅰ3; a support base Ⅰ2 is arranged on the upper part of the cushion block Ⅰ3, and the support base Ⅰ2 and the cushion block Ⅰ3 are connected by a dovetail keyway connection method 4; a groove 2a is provided in the middle of the upper surface of the support base Ⅰ2, and a placement block 1 is arranged in the groove 2a, and the placement block 1 and the support base Ⅰ2 are connected by a keyway connection method 5; a semicircular groove 1a is provided in the middle of the upper surface of the placement block 1; the longitudinal cutting support auxiliary device is used to support and fix one end of the liner processing rod when the liner is longitudinally cut, and the placement block 1 is provided with a groove 2a. The radius R of the semicircular groove 1a matches the radius r of the processing rod for the liner to be placed. The placement block 1 can be flexibly replaced according to different types of liner. The support base Ⅰ2 and the placement block 1 are connected and combined using a keyway connection method 5. The pad Ⅰ3 is used to adjust the height of one end of the liner processing rod. To ensure the accuracy of the sample, the liner needs to be placed horizontally longitudinally during longitudinal cutting. Selecting a pad Ⅰ3 of appropriate height can achieve H and h being equal, thereby achieving horizontal placement of the cut piece. The pad Ⅰ3 is connected to the support base Ⅰ2 using a dovetail keyway connection method 4.

[0038] The transverse cutting clamping aid comprises: two push rods 6, a support base II 7 and a cushion block II 8; a support base II 7 is arranged on the upper part of the cushion block II 8, and the support base II 7 and the cushion block II 8 are connected by a dovetail keyway connection method 4; a through hole is provided on the support base II 7 that passes through the left and right sides, and an opening 7b with a circular arc groove 7a connected to the through hole is provided on the front side of the support base II 7; the two push rods 6 are inverted T-shaped and symmetrically inserted at both ends of the through hole of the support base II 7; the insertion end of the push rod 6 is bonded with hard rubber 9, and the outer through hole It is connected to the left and right sides of the supporting base Ⅱ7 through the spring 10; the transverse cutting clamping aid is used to clamp and fix the charge liner during transverse cutting, and the arc-shaped groove 7a is used to fix and place the charge liner processing rod. When the sawing machine is clamped, the push rod 6 can be pushed to realize the clamping process. After the clamp is released, the push rod 6 can be immediately reset under the action of the spring 10. Select a cushion block Ⅱ8 of appropriate height to make H1 equal to h, so as to realize the horizontal placement of the cutting piece. The cushion block Ⅱ8 is connected to the supporting base Ⅱ7 using a dovetail keyway connection method 4.

[0039] Example 2

[0040] This embodiment provides a method for using the auxiliary tool described in Example 1 to perform pre-cutting of a liner tensile specimen before turning and forming the specimen.

[0041] Taking the liner with a length L of 220mm, a height h of 90mm, and a processing rod radius of 30mm as an example, the specimens to be cut are pre-cut specimens before the tensile specimens are turned and formed. They are rectangular cubes with dimensions of 15mm×60mm×liner wall thickness, and the number is 5.

[0042] The following steps are involved:

[0043] Step 1: Clean and degrease the surface of the prepared liner blank to ensure that there are no flash or burrs;

[0044] Step 2: Divide the liner into equal parts with the width of the sample being 15 mm;

[0045] Step 3: Adjust the clamping distance by the sawing machine hand wheel. The clamping distance should be slightly larger than the longitudinal horizontal length of the liner, 220 mm.

[0046] Step 4: Select the replaceable placement block 1 according to the radius of the liner processing rod 30mm, determine the pad I3 according to the height of 90mm from the bottom end of the liner processing rod to the horizontal plane, and then place the cleaned liner longitudinally on the sample table of the sawing machine, and place one end of the liner processing rod in the semicircular groove 1a in the longitudinal cutting support auxiliary tool for fixing the position, and the right side of the longitudinal cutting support auxiliary tool is close to the right clamp of the sawing machine;

[0047] Step 5: Adjust the sawing position of the liner according to the line drawn in step 2, tighten the clamp, select a sawing speed of 35-45m / min, and a sawing efficiency of 20-30cm 2 / min, when cutting to the upper end of the liner processing rod, retract the saw and release the clamp;

[0048] Step 6: Adjust the sawing position of the liner horizontally according to the line drawn in step 2, and repeat step 5.

[0049] Step 7: After the longitudinal sawing is completed, adjust the height H1 of the transverse cutting clamping aid to 90mm, rotate the liner after step 6 by 90° and place it horizontally, and place the liner processing rod at the arc-shaped groove 7a of the transverse cutting clamping aid. The cutting end position of step 6 is the cutting position of this step, and clamp tightly, select the sawing speed of 35-45m / min, and the sawing efficiency of 20-30cm 2 / min, release the clamp after cutting is completed;

[0050] Step 8: The sample block cut in step 7 is a rectangular block with a width of 15 mm. According to the test requirements, the cube-shaped sample block cut in step 7 is further cut into a pre-cut sample with a length of 60 mm;

[0051] Step 9: Use sandpaper to polish the rough edges of the sample and mark them for the next step of processing;

[0052] Step 10: After sampling, remove the auxiliary tool for next use.

[0053] Example 3

[0054] This embodiment provides a method for cutting samples for liner grain size detection using the auxiliary tool described in Example 1.

[0055] Taking a liner with a length L of 220mm, a height h of 90mm, and a processing rod radius of 30mm as an example, the samples to be cut are liner grain size test samples, and the number is 6. It is required to take a rectangular block at each symmetrical position of the liner, and take a metal block with a size of 12mm×12mm×liner wall thickness at the mouth, middle, and top of the liner corresponding to the rectangular block.

[0056] The following steps are involved:

[0057] Step 1: Clean and degrease the surface of the prepared liner blank to ensure that there are no flash or burrs;

[0058] Step 2: Take the width of the sample as 12mm and draw lines at the symmetrical positions of the liner;

[0059] Step 3: Adjust the clamping distance by the sawing machine hand wheel. The clamping distance is slightly larger than the longitudinal length of the liner, 220 mm.

[0060] Step 4: Select placement block 1 according to the radius of the liner processing rod of 30mm, determine pad I3 according to the height of 90mm from the bottom end of the liner processing rod to the horizontal plane, and then place the cleaned liner longitudinally on the sample setting table of the sawing machine, and place one end of the liner processing rod in the semicircular groove 1a in the longitudinal cutting support auxiliary tool for fixing the position, and the right side of the longitudinal cutting support auxiliary tool is close to the right clamp of the sawing machine;

[0061] Step 5: Adjust the sawing position of the liner according to the line drawn in step 2, tighten the clamp, select a sawing speed of 35-45m / min, and a sawing efficiency of 20-30cm 2 / min, when cutting to the upper end of the liner processing rod, retract the saw and release the clamp;

[0062] Step 6: Adjust the sawing position of the liner horizontally according to the line drawn in step 2, and repeat step 5.

[0063] Step 7: After the longitudinal sawing is completed, adjust the height H1 of the transverse cutting clamping aid to 90mm, rotate the liner after step 6 by 90° and place it horizontally, and place the liner processing rod at the arc-shaped groove 7a of the transverse cutting clamping aid. The cutting end position of step 6 is the cutting position of this step, and clamp tightly, select the sawing speed of 35-45m / min, and the sawing efficiency of 20-30cm 2 / min, release the clamp after cutting is completed;

[0064] Step 8: The sample blocks cut in step 7 are 2 rectangular blocks with a width of 12 mm. According to the size requirements, the mouth, middle and top sample blocks are cut from the corresponding positions of the rectangular blocks cut in step 7;

[0065] Step 9: Use sandpaper to polish the rough edges of the sample and mark them for the next step of processing;

[0066] Step 10: After sampling, remove the auxiliary tool for next use.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling method for an auxiliary tool for efficient and rapid sampling of a medicine-shaped liner, characterized in that: The auxiliary tool for efficient and rapid sampling of the medicine-shaped cover comprises: a longitudinal cutting support auxiliary tool and a transverse cutting clamping auxiliary tool; The longitudinal cutting support auxiliary device comprises: a placement block (1), a support base body I (2) and a cushion block I (3); the cushion block I (3) is provided with a support base body I (2) on its upper part, and the support base body I (2) and the cushion block I (3) are connected by a dovetail keyway connection method (4); a groove (2a) is provided in the middle of the upper surface of the support base body I (2), a placement block (1) is provided in the groove (2a), and the placement block (1) and the support base body I (2) are connected by a keyway connection method (5); a semicircular groove (1a) is provided in the middle of the upper surface of the placement block (1); The transverse cutting clamping auxiliary tool comprises: two push rods (6), a support base II (7) and a cushion block II (8); the cushion block II (8) is provided with a support base II (7) on its upper part, and the support base II (7) and the cushion block II (8) are connected by a dovetail keyway connection method (4); the support base II (7) is provided with a through hole penetrating through the left and right sides, and the front side of the support base II (7) is provided with an opening (7b) with a circular arc groove (7a) connected to the through hole; the two push rods (6) are inverted T-shaped and symmetrically inserted at both ends of the through hole of the support base II (7); the insertion end of the push rod (6) is bonded with hard rubber (9), and the outside is connected to the left and right sides of the support base II (7) by a spring (10); The sampling method includes the following steps: Step 1: Clean and degrease the surface of the prepared liner blank to ensure that there are no flash or burrs; Step 2: Use the sawing machine hand wheel to adjust the clamping distance, and the clamping distance should be greater than the longitudinal horizontal length L of the liner; Step 3: Select a placement block (1) according to the radius r of the liner processing rod, determine the spacer block I (3) according to the height h from the bottom end of the liner processing rod to the horizontal plane, and then place the cleaned liner longitudinally on the sample placement table of the sawing machine, place one end of the liner processing rod in the semicircular groove (1a) in the longitudinal cutting support auxiliary tool for fixing the position, and the right side of the longitudinal cutting support auxiliary tool is close to the right clamp of the sawing machine; Step 4: Adjust the sawing position of the liner, tighten the clamp, select a sawing speed of 35-45m / min, and a sawing efficiency of 20-30cm 2 / min, when cutting to the upper end of the liner processing rod, retract the saw and release the clamp; Step 5: Adjust the sawing position of the liner horizontally according to the width of the sample, and repeat step 4; Step 6: After the longitudinal sawing is completed, adjust the height H1 of the transverse cutting clamping aid to be the same as h, rotate the liner after step 5 by 90° and place it horizontally, and place the liner processing rod in the arc-shaped groove (7a) of the transverse cutting clamping aid. The cutting end position of step 5 is the cutting position of this step, and clamp tightly, select the sawing speed of 35-45m / min, and the sawing efficiency of 20-30cm 2 / min, release the clamp after cutting is completed; Step 7: The sample block cut in step 6 is in a rectangular shape, and can be flexibly cut into size using a sawing machine; according to the test requirements, the cubic sample block cut in step 6 is further cut into the required size requirements; Step 8: After sampling, remove the auxiliary tool for next use.

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