A modular quick assembly and disassembly device and method for concave machining of a shroud

Abstract

The application discloses a modular quick assembling and disassembling device and method for concave surface machining of a chopper liner, which can be used for concave surface machining of a chopper liner part and comprises a main body structure, a self-locking mechanism, a quick disassembling mechanism and a positioning structure, wherein the positioning structure and the quick disassembling mechanism are installed on the main body structure; the self-locking principle is utilized, the inclined block is pushed to a suitable position through rotation of a screw rod, and then the reliable and quick clamping and positioning of the chopper liner part can be realized by cooperation of a pressing plate and a positioning pin; the quick disassembling mechanism is adopted for connection of the pressing plate and the main body structure, quick assembling and disassembling of the part can be realized, the inclined block is moved under the action of spring force when the screw rod is rotated outward, and meanwhile, the part can be taken off by unscrewing the quick disassembling mechanism. The above structure design can improve the assembling and disassembling efficiency, save disassembling and adjusting time, and thus improve the machining efficiency of the chopper liner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tool tooling, in particular to a modular quick mounting and dismounting device and method for concave surface machining of a shaped charge liner. BACKGROUND

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

[0003] When clamping and machining it in a conventional manner, it is often difficult to control the clamping force during the clamping process due to its thin wall thickness, resulting in excessive deformation, and ultimately the machining precision cannot be guaranteed. At the same time, the conventional clamping method has low clamping efficiency, and it is difficult to achieve quick mounting and dismounting during mass production. Therefore, a modular quick mounting and dismounting device and method for concave surface machining of a shaped charge liner are proposed. SUMMARY

[0004] The present application aims to provide a modular quick mounting and dismounting device and method for concave surface machining of a shaped charge liner to solve the problems raised in the background art.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A modular quick mounting and dismounting device for concave surface machining of a shaped charge liner, comprising:

[0007] a hollow main body structure;

[0008] a self-locking mechanism arranged in the main body structure;

[0009] a quick release mechanism arranged on the main body structure;

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

[0011] The main body structure comprises:

[0012] a base;

[0013] a housing mounted on the base;

[0014] a connecting piece fixed to 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-locked with the first inclined block;

[0019] A screw nut mounted on the housing;

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

[0021] A first spring arranged between the housing and the first inclined block for clamping the first inclined block and the screw rod.

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

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

[0024] The positioning structure comprises:

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

[0026] A positioning pin cooperating with the positioning hole on the muzzle mounting base and used for positioning the muzzle.

[0027] The quick release mechanism comprises:

[0028] A knob mounting groove arranged on the housing;

[0029] A knob outer sleeve mounted in the knob mounting groove;

[0030] A knob core mounted in the knob outer sleeve;

[0031] A locking ball mounted between the knob core and the knob outer sleeve and used for locking;

[0032] A limiting ring arranged in the knob outer sleeve,

[0033] A second spring mounted between the limiting ring and the knob core;

[0034] And a knob threadedly mounted on the top of the knob outer sleeve.

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

[0036] The outer side of the knob outer sleeve is fixedly mounted with a pressing plate, and the pressing plate is provided with a muzzle fixing end.

[0037] Further, the modular quick mounting and dismounting device for the concave machining of a shroud comprises a main body structure, a self-locking mechanism, a quick dismounting mechanism and a positioning structure, the main body structure is a hollow structure, the self-locking mechanism is installed on the main body structure, and the quick dismounting mechanism is detachably installed on the main body structure.

[0038] Specifically, the main body structure comprises a base, a shell, a T-shaped 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 hexagonal socket screw, the shell is circumferentially provided with a T-shaped bolt hole, the T-shaped bolt hole is connected to a T-shaped table of a machine tool through a T-shaped bolt, the upper surface of the shell is provided with a threaded hole to connect a sliding rail, the shell is circumferentially provided with a threaded hole and a spring cover hole to connect the nut and the spring cover, the shell is provided with a circular groove on the circular surface to connect a knob sleeve base, the shell is provided with a circular hole in the middle to cooperate with a shroud mounting base.

[0039] Specifically, the self-locking mechanism comprises a dovetail sliding 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 sliding rail is connected to the base through a hexagonal socket screw, the lower surface of the first inclined block is provided with a dovetail groove to cooperate with the dovetail sliding rail, the first inclined block can move linearly on the dovetail sliding rail, the upper inclined surface of the first inclined block is provided with a square sliding rail, the lower surface of the second inclined block is provided with a square groove, the second inclined block cooperates with the first inclined block through the square sliding rail and the square groove, and the second inclined block and the first inclined block can move relatively through the square sliding rail and the square groove. The first spring is located between the first inclined block groove and the spring cover groove, the spring cover is fixed to the shell through a hexagonal socket screw, when the first spring is in a compressed state, the screw rod is rotated to the left, and the spring can push the first inclined block to move to the left.

[0040] Specifically, the quick dismounting mechanism comprises a knob base, locking balls, a knob sleeve, a knob core, a second spring, a pressing plate, a limiting ring and a knob. The small end of the knob base is provided with a thread to be fixed in the groove of the shell, the interior of the knob base is provided with an inclined surface, the thin end of the knob core is also provided with an inclined surface, there are two locking balls in a quick locking structure, the locking balls are located in the circular hole of the knob sleeve, when the spherical surfaces of the locking balls are in contact with the inclined surfaces of the knob base and the knob core at the same time, the quick locking structure is in a locked state. The knob sleeve is connected to the pressing plate through a thread, the interior of the knob sleeve is provided with an opening, the knob core is installed in the interior of the knob sleeve, the second spring is sleeved on the thick end of the knob core, the second spring is fixed between the limiting ring and the knob core circular ring through welding, the limiting ring is fixed in the knob sleeve through welding, and the internal thread of the knob is matched with the external thread of the knob sleeve, the knob can be moved up or down by rotating the knob clockwise or counterclockwise.

[0041] Specifically, the positioning structure comprises a shroud mounting base and a positioning pin. The upper surface of the shroud mounting base is provided with a concave surface in contact with the convex surface of the shroud to be machined. The center of the concave surface of the shroud mounting base is provided with a positioning pin hole. The positioning pin is inserted into the positioning pin hole and the positioning hole of the shroud to be machined to realize the positioning of the shroud to be machined.

[0042] Further, one end of the lead screw is provided with a spherical surface, and the other end is provided with a through hole. The thin end of the handle is inserted into the through hole of the lead screw. The lead screw is rotated through the handle, so that the lead screw moves linearly under the cooperation of the lead screw nut, further pushing the first inclined block to move linearly. The lead screw nut is provided with a countersunk hole, and is fixed to the shell through an internal hexagonal screw.

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

[0044] 1. Quick assembly and disassembly: under the cooperation of the lead screw nut, the lead screw and the first spring, the handle only needs to be pulled to make the first inclined block drive the second inclined block to move up or down, thereby driving the shroud mounting base in contact with the workpiece to move up or down, so as to finally realize the clamping or loosening of the workpiece. To remove the processed part, only need to rotate the knob counterclockwise to remove the pressing plate and take out the processed part.

[0045] 2. Reliable clamping: the second inclined block and the first inclined block are provided with a slope surface that meets the self-locking condition. When a downward force acts on the first inclined block, the first inclined block will not have any displacement, ensuring the stability of clamping.

[0046] 3. Replaceable accessories: the shroud mounting base is designed to cooperate with the workpiece. When the surface profile of the workpiece changes, the corresponding shroud mounting base can be replaced, which reduces the design and manufacturing cost of the tooling. BRIEF DESCRIPTION OF DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and together with the specific embodiments below, serve to explain the present application, but do not constitute a limitation on the present application.

[0048] Figure 1 The overall installation drawing of the present application.

[0049] Figure 2 The three-dimensional structure of the present application is shown in the figure.

[0050] Figure 3 The internal structure of the present application is shown in the figure.

[0051] Figure 4 The Figure 3 The local enlarged view of C.

[0052] Figure 5 For the present application Figure 3 Local enlarged view at D.

[0053] Figure 6 For the present application

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

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

[0056] Please refer to Figures 1-6 The present application provides a technical solution: a shaped charge concave machining modular quick assembly and disassembly device and method.

[0057] The main structure 100 includes the base 101, the T-shaped bolt 102, the nut 103, and the shell 104. The T-shaped bolt 102 and the T-shaped nut 103 are respectively provided with two, which can fix the base 101 on the workbench of the machine tool. The base 101 is connected with the shell 104 through the internal hexagonal screw. The shell 104 is provided with two circular holes in the middle and a circular groove on the upper circular surface.

[0058] The self-locking mechanism 200 comprises a slide rail 201, a screw rod 202, a handle 203, a screw rod nut 204, a first inclined block 205, a second inclined block 206, a first spring 207, a spring cover 208; the slide rail 201 is fixed on the base through two inner hexagonal screws, the first inclined block 205 is provided with a dovetail groove on the bottom surface, and the first inclined block 205 is matched with the slide rail 201 to make linear motion on the slide rail 201; the second inclined block 206 is provided with a square groove on the inclined surface, and the second inclined block 206 is matched with the first inclined block 205 provided with the square slide rail on the upper inclined surface; when the handle 203 is rotated clockwise, the screw rod 202 moves in the screw rod nut 204 matched therewith, pushes the first inclined block 205 to move on the slide rail 201, and the first spring 207 constrained in the spring cover 208 is compressed, and the second inclined block 206 is driven by the first inclined block 205 to move upward; when the handle 203 is rotated counterclockwise, the screw rod 202 moves in the screw rod nut 204 matched therewith, the pushing force of the screw rod 202 on the first inclined block 205 disappears, and the first inclined block 205 moves toward the screw rod nut 204 under the elastic force of the first spring 207.

[0059] The quick release mechanism 300 comprises a knob base 301, a knob outer sleeve 302, a locking ball 303, a knob core 304, a pressing plate 305, a second spring 306, a limiting ring 307, and a knob 308; the knob outer sleeve 302 is connected with the pressing plate 305 through the middle outer thread on the knob outer sleeve 302, the knob base 301 is connected in the groove of the shell through the thread, the limiting ring 307 is welded on the knob outer sleeve 302, and the lower surface of the second spring 306 is welded on the annular surface of the knob core 304; when the knob 308 is rotated clockwise, the knob 308 moves downward under the cooperation of the outer thread on the upper part of the knob outer sleeve 302 and the inner thread of the knob 308, the inner surface of the knob 308 drives the knob core 304 to move downward, the second spring 306 is in the stretched state, and the spherical surface of the locking ball 303 is in contact with the inner inclined surface of the knob base 301 and the inner inclined surface of the knob core 304 at the same time; at this time, the quick release mechanism is in the locked state, and the pressing plate 305 is in close contact with the shell; when the knob 308 is rotated counterclockwise, the knob core 304 is pulled upward under the spring force of the second spring 306, and the locking ball 303 slides into the interior of the knob outer sleeve 302; at this time, the quick release mechanism is in the released state.

[0060] The positioning structure 400 comprises a baffle mounting base 401 and a positioning pin 402; the circular arc surface of the baffle mounting base 401 is in contact with the convex surface of the baffle part, and the positioning pin 402 is inserted into the center hole of the baffle part and the circular hole of the baffle mounting base 401 to complete the positioning of the baffle part.

[0061] The one-time clamping and dismounting of the liner comprises the following steps: 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 is in contact with the convex surface of the liner part, inserting the positioning pin 402 into the center hole of the liner part and the circular hole of the liner mounting base 401, and completing the positioning of the liner part; ② aligning the pressing plate 305 of the quick release mechanism with the shell 104 of the main body structure, rotating the knob 308 clockwise, so that the quick release mechanism is in the locked state; ③ rotating the handle 203 of the self-locking mechanism clockwise, so that the liner is in complete contact with the pressing plate 305; ④ after the concave surface of the liner is machined, rotating the knob 308 of the quick release mechanism counterclockwise, removing the quick release mechanism, and taking out the liner.

Claims

1. A modular quick assembly and disassembly device for concave machining of a shroud, characterized in that, It comprises: a hollow main body structure; a self-locking mechanism arranged in the main body structure; a quick release mechanism arranged on the main body structure; and a positioning structure mounted on the self-locking mechanism; the main body structure comprises: a base; a shell mounted on the base; a connecting piece fixed on the base; the self-locking mechanism comprises: a sliding rail mounted on the base; a first inclined block mounted on the sliding rail; a second inclined block mounted on the first inclined block and in self-locking cooperation with the first inclined block; a screw nut mounted on the shell; a screw in cooperation with the screw nut and abutting against the first inclined block; a first spring arranged between the shell and the first inclined block for clamping the first inclined block and the screw; the positioning structure comprises: a muzzle mounting base mounted on the second inclined block; a positioning pin in cooperation with a positioning hole on the muzzle mounting base and used for positioning the muzzle; the quick release mechanism comprises: a knob mounting groove arranged on the shell; a knob outer sleeve mounted in the knob mounting groove; a knob core mounted in the knob outer sleeve; a locking ball mounted between the knob core and the knob outer sleeve and used for locking; a limiting ring arranged in the knob outer sleeve; a second spring mounted between the limiting ring and the knob core; and a knob threadedly mounted on the top of the knob outer sleeve.

2. The quick assembly and disassembly device for the molding of the cup-shaped cover concave surface according to claim 1, characterized in that, The connecting piece is a T-shaped bolt and a nut cooperating with the T-shaped bolt.

3. The quick assembly and disassembly device for the molding of the cup-shaped cover concave surface according to claim 1, characterized in that, The first inclined block is provided with a limiting groove cooperating with the screw, and the end of the screw is located in the limiting groove.

4. The quick attachable and detachable device for the molding of the concave of the cupule according to claim 1, characterized in that, One end of the second spring is fixed with the limiting ring, and the other end of the second spring is fixed with the knob core.

5. The cup-milling modular quick-mounting and demounting device according to claim 1, characterized in that, The outer side of the knob outer sleeve is fixedly mounted with a pressing plate, and the pressing plate is provided with a muzzle fixing end.

6. A method for quick assembly and disassembly of a concave machining module of a shroud, characterized in that, The muzzle concave machining modular quick assembly and disassembly device comprises the following steps: ①Place the muzzle on the muzzle mounting base, make the arc surface of the muzzle mounting base contact with the convex surface of the muzzle, insert the positioning pin into the center hole of the muzzle and the round hole of the muzzle mounting base, and complete the positioning of the muzzle; ②Align the pressing plate of the quick release mechanism with the base of the main body structure, rotate the knob of the quick release mechanism clockwise, and make the quick release mechanism in the locked state; ③Rotate the screw of the self-locking mechanism clockwise, and make the muzzle completely contact with the pressing plate of the quick release mechanism; ④After the concave machining of the muzzle is completed, rotate the knob of the quick release mechanism counterclockwise, and take out the processed muzzle.

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