Modularized rapid assembling and disassembling device and method for concave surface machining of shaped charge liner

Abstract

The invention discloses a modular quick assembly and disassembly device and method for concave surface processing of shaped charge liners, which can be used for concave surface processing of shaped charge liner parts, and comprises a main body structure, a self-locking mechanism, a quick disassembly mechanism and a positioning structure, and the positioning structure and the quick disassembly mechanism are mounted on the main body structure; the self-locking principle is utilized, the inclined block is pushed to a proper position through rotation of the screw rod, and then the cover shell part can be reliably and rapidly clamped and positioned in cooperation with the pressing plate and the positioning pin; the pressing plate is connected with the main body structure through the quick release mechanism, quick assembly and disassembly of parts can be achieved, the threaded rod is rotated outwards, the inclined block can move under the action of spring force, and meanwhile the parts can be taken down by unscrewing the quick release mechanism. According to the structural design, the assembling and disassembling efficiency can be improved, the assembling, disassembling and adjusting time is saved, and therefore the machining efficiency of the shaped charge liner is improved.

Description

Technical Field

[0001] The invention relates to the technical field of CNC machine tool tools, and in particular to a modular quick assembly and disassembly device and method for machining a concave surface of a medicine liner. Background Art

[0002] The liner is one of the key components of shaped charge and is mainly used in anti-armor weapon systems. Its function is to form a high-speed, high-pressure jet during the explosion to penetrate enemy armored targets. The structure of the liner also has an important influence on its performance. Structural parameters such as the shape of the liner, the structural proportion of the combined liner, various new top structures, cone angle, wall thickness, curvature radius and generatrix length, etc., will have a significant impact on the maximum head speed of the super-shaped jet, the trend of the overall jet speed reduction and the penetration ability of the jet.

[0003] When it is clamped and processed by conventional methods, it is often difficult to control the clamping force during the clamping process due to its thin wall thickness, resulting in excessive deformation, and the final processing accuracy is difficult to guarantee. At the same time, the conventional clamping method has low clamping efficiency, and it is difficult to achieve rapid assembly and disassembly during mass production. Therefore, a modular rapid assembly and disassembly device and method for concave surface machining of a medicine liner is proposed. Summary of the invention

[0004] The object of the present invention is to provide a modular rapid assembly and disassembly device and method for processing the concave surface of a medicine liner, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A modular quick assembly and disassembly device for processing concave surfaces of liner, comprising:

[0007] Hollow main structure;

[0008] A self-locking mechanism disposed in the main structure;

[0009] A quick-release mechanism disposed on the main structure;

[0010] and a positioning structure installed on the self-locking mechanism;

[0011] The main structure comprises:

[0012] Base;

[0013] a housing mounted on the base;

[0014] A connecting piece fixed on the base;

[0015] The self-locking mechanism comprises:

[0016] A slide rail mounted on the base;

[0017] A first inclined block mounted on the slide rail;

[0018] A second inclined block mounted on the first inclined block and self-lockingly cooperating with the first inclined block;

[0019] A screw nut mounted on the housing;

[0020] A screw rod mounted in cooperation with the screw rod nut and resting against the first inclined block;

[0021] A first spring is arranged between the housing and the first inclined block and is used to tighten the first inclined block and the lead screw.

[0022] The connecting piece is a T-shaped bolt and a nut matched with the T-shaped bolt.

[0023] The first inclined block is provided with a limiting groove matched with the screw rod, and the end of the screw rod is located in the limiting groove.

[0024] The positioning structure comprises:

[0025] A liner mounting base mounted on the second inclined block;

[0026] A positioning pin cooperates with the positioning hole on the medicine cover mounting base and is used for positioning the medicine cover.

[0027] The quick release mechanism comprises:

[0028] A knob mounting slot provided on the housing;

[0029] A knob housing installed in the knob installation slot;

[0030] A knob core installed in the knob housing;

[0031] A locking ball installed between the knob core and the knob housing and used for locking;

[0032] A limiting ring is arranged in the knob housing,

[0033] A second spring installed between the stop ring and the knob core;

[0034] and a knob threadably mounted on the top of the knob housing.

[0035] One end of the second spring is fixed to the limiting ring, and the other end of the second spring is fixed to the knob core.

[0036] A pressing plate is fixedly installed on the outer side of the knob outer sleeve, and a medicine-shaped cover fixing end is arranged on the pressing plate.

[0037] Furthermore, a modular quick assembly and disassembly device for concave surface processing of a medicine cover includes a main structure, a self-locking mechanism, a quick-release mechanism and a positioning structure. The main structure is a hollow structure, the self-locking mechanism is installed on the main structure, and the quick-release mechanism is detachably installed on the main structure.

[0038] Specifically, the main structure includes a base, a shell, a T-bolt, and a nut. The base is provided with a countersunk hole, the shell is provided with a threaded hole, the base is connected to the shell through a hexagon socket screw, the shell is provided with a T-bolt hole circumferentially, and can be connected to the T-table of the machine tool through the T-bolt, the upper plane of the shell is provided with a threaded hole to connect the slide rail, the shell is provided with a threaded hole and a spring cover hole circumferentially to connect the nut and the spring cover, the upper annular surface of the shell is provided with a knob jacket base groove to connect the knob jacket base, and the middle of the shell is provided with a circular hole, which cooperates with the liner mounting base.

[0039] Specifically, the self-locking mechanism includes a dovetail slide rail, a screw rod, a handle, a screw rod nut, a first spring, a spring cover, a first inclined block, and a second inclined block. The slide rail is connected to the base through a hexagon socket screw, a dovetail groove is provided on the lower surface of the first inclined block to cooperate with the dovetail slide rail, and the first inclined block can make a linear motion on the dovetail slide rail. A square slide rail is provided on the upper inclined surface of the first inclined block, and a square groove is provided on the lower surface of the second inclined block. The second inclined block cooperates with the first inclined block through the square slide rail and the square groove, and the second inclined block and the first inclined block can make relative motion through the square slide rail and the square groove. The first spring is located between the groove of the first inclined block and the groove of the spring cover, and the spring cover is fixed to the housing through a hexagon socket screw. When the first spring is in a compressed state, the screw rod rotates leftward at the same time, and the spring can push the first inclined block to move leftward.

[0040] Specifically, the quick release mechanism includes a knob base, a locking ball, a knob jacket, a knob core, a second spring, a pressure plate, a stop ring, and a knob. The small end of the knob base is provided with a thread, which is fixed in the groove of the housing through the thread. The knob base is provided with an inclined surface inside, and the thin end of the knob core is also provided with an inclined surface. There are two locking balls in a quick locking structure, and the locking balls are located in the round hole of the knob jacket. When the spherical surface of the locking ball contacts the inclined surface of the knob base and the inclined surface of the knob core at the same time, the quick locking structure is in a locked state. The knob jacket is connected to the pressure plate through a thread, the knob jacket has an opening inside, and the knob core is installed inside the knob jacket. At the same time, the second spring is sleeved on the thick end of the knob core, and the second spring is fixed between the stop ring and the knob core circular ring by welding. The stop ring is fixed in the knob jacket by welding. The inner thread of the knob cooperates with the outer thread of the knob jacket. The knob can be moved up or down by rotating the knob clockwise or counterclockwise.

[0041] Specifically, the positioning structure includes a liner mounting base and a positioning pin. The upper surface of the liner mounting base is provided with a concave surface that contacts the convex surface of the liner to be processed, and the center of the concave surface of the liner mounting base is provided with a positioning pin hole, and the positioning pin is inserted into the positioning pin hole and the positioning hole of the liner to be processed to achieve the positioning of the liner to be processed.

[0042] Furthermore, a spherical surface is provided on one end of the screw rod and a through hole is provided on the other end. The thin end of the handle is inserted into the through hole of the screw rod. The screw rod is rotated by the handle, so that the screw rod can move linearly with the cooperation of the screw rod nut, and the spherical surface further pushes the first bevel block to move linearly. The screw rod nut is provided with a countersunk hole and is fixed to the housing by a hexagon socket screw.

[0043] Compared with the prior art, the beneficial effects and characteristics of the present invention are:

[0044] 1. Quick assembly and disassembly: With the cooperation of the screw nut, screw and the first spring, to clamp or loosen the part to be processed, just pull the handle to make the first inclined block drive the second inclined block to move up or down, thereby driving the liner mounting base in contact with the part to be processed to move up or down, and finally achieve the clamping or loosening of the part to be processed. To remove the processed part, just rotate the knob counterclockwise to remove the pressure plate and take out the processed part.

[0045] 2. Reliable clamping: An inclined surface that meets the self-locking condition is provided between the second inclined block and the first inclined block. When a downward force acts on the first inclined block, the first inclined block will not be displaced, thereby ensuring the stability of clamping.

[0046] 3. Accessories are replaceable: The liner mounting base is designed to match the parts to be processed. When the surface contour of the parts to be processed changes, the corresponding liner mounting base can be replaced, which reduces the design and manufacturing costs of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention.

[0048] Figure 1 It is the overall installation diagram of the present invention.

[0049] Figure 2 It is a half-section view of the three-dimensional structure of the present invention.

[0050] Figure 3 It is a full cross-sectional view of the internal structure of the present invention.

[0051] Figure 4 For the present invention Figure 3 A partial enlarged view of point C.

[0052] Figure 5 For the present invention Figure 3 A partial enlarged view of point D.

[0053] Figure 6 This is the appearance drawing of the parts clamped by the fixture.

[0054] As shown in the figure: 100, main structure; 101, base; 102, T-bolt; 103, nut; 104, shell; 200, self-locking mechanism; 201, slide rail; 202, screw; 203, handle; 204, screw nut; 205, first inclined block; 206, second inclined block; 207, first spring; 208, spring cover; 300, quick release mechanism; 301, knob base; 302, knob jacket; 303, locking ball; 304, knob core; 305, pressure plate; 306, second spring; 307, limit ring; 308, knob; 400, positioning structure; 401, medicine cap mounting base; 402, positioning pin. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0056] See also Figure 1-6 The present invention provides a technical solution: a modular rapid assembly and disassembly device and method for concave surface processing of a medicine liner.

[0057] The main structure 100 includes a base 101, a T-shaped bolt 102, a nut 103, and a shell 104; there are two T-shaped bolts 102 and two T-shaped nuts 103, which can fix the base 101 on the workbench of the machine tool. The base 101 is connected to the shell 104 through a hexagon socket screw. The shell 104 has two circular holes in the middle and a circular groove on the upper annular surface.

[0058] The self-locking mechanism 200 includes a slide rail 201, a screw rod 202, a handle 203, a screw rod nut 204, a first bevel block 205, a second bevel block 206, a first spring 207, and a spring cover 208; the slide rail 201 is fixed to the base by two hexagon socket screws, the bottom surface of the first bevel block 205 is provided with a dovetail groove, and the first bevel block 205 can make a linear motion on the slide rail 201 through the dovetail groove, and the bottom surface of the second bevel block 206 is an inclined surface, and a square groove is provided on the inclined surface, which can cooperate with the first bevel block 205 with a square slide rail on the upper inclined surface. When rotating clockwise, When the handle 203 is turned, the screw rod 202 moves in the screw rod nut 204 that cooperates with it, pushing the first inclined block 205 to move on the slide rail 201, and at the same time, the first spring 207 constrained by the spring cover 208 is compressed, and the second inclined block 206 moves upward under the drive of the first inclined block 205. When the handle 203 is rotated counterclockwise, the screw rod 202 moves in the screw rod nut 204 that cooperates with it, and the thrust of the screw rod 202 on the first inclined block 205 disappears. At the same time, under the elastic force of the first spring 207, the first inclined block 205 moves toward the screw rod nut 204.

[0059] The quick release mechanism 300 includes a knob base 301, a knob cover 302, a locking ball 303, a knob core 304, a pressure plate 305, a second spring 306, a limiting ring 307, and a knob 308. The knob cover 303 is connected to the pressure plate 305 through the middle external thread on the knob cover 303, the knob base 301 is connected to the groove of the shell through a thread, the limiting ring 307 is fixed to the knob cover 302 by welding, and the lower surface of the second spring 306 is fixed to the annular surface of the knob core 304 by welding. When the knob 308 is rotated clockwise, the upper external thread of the knob cover 303 and the knob core 304 are locked. With the cooperation of the internal thread of the button 308, the knob 308 moves downward, and the inner surface of the knob 308 drives the knob core 304 to move downward. The second spring 306 is in a stretched state, and the spherical surface of the locking ball 303 contacts the inner inclined surfaces of the knob base 301 and the inner inclined surfaces of the knob core 304 at the same time. At this time, the quick release mechanism is in a locked state, and the pressure plate 305 is in close contact with the shell. When the knob 308 is rotated counterclockwise, under the action of the spring force of the second spring 306, the knob core 304 is pulled upward, and the locking ball 303 slides into the inside of the knob sleeve 302. At this time, the quick release mechanism is in a loosened state.

[0060] The positioning structure 400 includes a liner mounting base 401 and a positioning pin 402; the arc surface of the liner mounting base 401 contacts the convex surface of the liner part, and the positioning pin 402 is inserted into the center hole of the liner part and the circular hole of the liner mounting base 401 to complete the positioning of the liner part.

[0061] The steps of completing the clamping and disassembly of the liner include: ① placing the liner on the arc surface of the liner mounting base 401, so that the arc surface of the liner mounting base 401 contacts the convex surface of the liner part, and inserting the positioning pin 402 into the center hole of the liner part and the circular hole of the liner mounting base 401 to complete the positioning of the liner part; ② aligning the pressure plate 305 of the quick-release mechanism with the shell 104 of the main structure, and rotating the knob 308 clockwise to put the quick-release mechanism in a locked state; ③ rotating the handle 203 of the self-locking mechanism clockwise to make the liner completely contact with the pressure plate 305; ④ after completing the concave surface processing of the liner, rotate the knob 308 of the quick-release mechanism counterclockwise, remove the quick-release mechanism, and take out the liner.

Claims

1. A modular quick assembly and disassembly device for concave surface processing of a liner, characterized in that: include: Hollow main structure; A self-locking mechanism disposed in the main structure; A quick-release mechanism disposed on the main structure; and a positioning structure installed on the self-locking mechanism; The main structure comprises: Base; a housing mounted on the base; A connecting piece fixed on the base; The self-locking mechanism comprises: A slide rail mounted on the base; A first inclined block mounted on the slide rail; A second inclined block mounted on the first inclined block and self-lockingly cooperating with the first inclined block; A screw nut mounted on the housing; A screw rod mounted in cooperation with the screw rod nut and resting against the first inclined block; A first spring is arranged between the housing and the first inclined block and is used to tighten the first inclined block and the lead screw.

2. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 1 is characterized in that: The connecting piece is a T-shaped bolt and a nut matched with the T-shaped bolt.

3. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 1 is characterized in that: The first inclined block is provided with a limiting groove matched with the screw rod, and the end of the screw rod is located in the limiting groove.

4. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 1, characterized in that: The positioning structure comprises: A liner mounting base mounted on the second inclined block; A positioning pin cooperates with the positioning hole on the medicine cover mounting base and is used for positioning the medicine cover.

5. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 1, characterized in that: The quick release mechanism comprises: A knob mounting slot provided on the housing; A knob housing installed in the knob installation slot; A knob core installed in the knob housing; A locking ball installed between the knob core and the knob housing and used for locking; A limiting ring is arranged in the knob housing, A second spring installed between the stop ring and the knob core; and a knob threadably mounted on the top of the knob housing.

6. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 5, characterized in that: One end of the second spring is fixed to the limiting ring, and the other end of the second spring is fixed to the knob core.

7. The modular quick assembly and disassembly device for concave surface processing of the medicine liner according to claim 5, characterized in that: A pressing plate is fixedly installed on the outer side of the knob outer sleeve, and a medicine-shaped cover fixing end is arranged on the pressing plate.

8. A modular rapid assembly and disassembly method for concave surface processing of a liner, characterized in that: The modular quick assembly and disassembly device for processing the concave surface of the medicine liner according to any one of claims 1 to 7 comprises the following steps: ① Place the liner on the liner mounting base so that the arc surface of the liner mounting base contacts the convex surface of the liner, and insert the positioning pin into the center hole of the liner and the circular hole of the liner mounting base to complete the positioning of the liner; ②Align the pressure plate of the quick release mechanism with the base of the main structure, and rotate the knob of the quick release mechanism clockwise to lock the quick release mechanism; ③ Rotate the screw of the self-locking mechanism clockwise to make the liner fully contact with the pressure plate of the quick release mechanism; ④ After completing the concave surface processing of the charge liner, rotate the knob of the quick-release mechanism counterclockwise to take out the processed charge liner.

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