Machining and positioning device for spherical head shaped charge liner
By designing a combined threaded connection device for the inner and outer core molds, the problem of fixing and accurately positioning the spherical head propellant liner was solved, enabling the application of pharmaceutical technology to the field of pharmaceutical technology. This solved the problem of the inability to effectively fix and accurately position the spherical head propellant liner in existing technologies, and improved the precision machining quality of the propellant liner and the performance of the projectile.
Patent Information
- Application Number
- CN202422482876.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-14
AI Technical Summary
Existing technology cannot effectively fix and accurately position the spherical propellant liner, resulting in its precision machining quality failing to meet requirements and affecting the projectile's power performance.
Design a positioning device for machining spherical head pill mold covers. It adopts a combination of inner and outer core molds and fixes the pill mold cover by threaded connection to achieve precise positioning and fixation.
It improved the precision machining quality and efficiency of the propellant liner, met the requirements of high-quality process parameters, and enhanced the performance of the projectile.
Smart Images
Figure CN223544647U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drug shaped cover technology, specifically relating to a positioning device for machining a spherical head drug shaped cover. Background Technology
[0002] As a crucial component of projectiles, the propellant liner generally requires extremely high quality. Propellant liner blanks are typically obtained through processes such as stamping, spinning, and electroforming, followed by precision machining to produce the final product. The propellant liner is generally conical in shape, with a flat end at the smaller end. In precision machining, an inner mandrel is designed to hold the propellant liner in place. This mandrel is then directly clamped onto a lathe, and the smaller end is simply held in place for machining. However, due to the increasing variety of projectile types, many propellant liner blanks now have a spherical smaller end with a curved surface instead of a flat one. Lathes cannot hold the propellant liner in place, resulting in either the liner being unmachined or failing to meet requirements. This negatively impacts the overall power of the projectile (using only one type of inner mandrel during machining can either prevent the propellant liner from meeting high quality standards, leading to a significant decrease in projectile power or even rendering it unusable). Utility Model Content
[0003] (a) Technical problems to be solved
[0004] The technical problem to be solved by this utility model is: to design a positioning device for machining a spherical head pill liner, so that it can fix the parts and accurately position them during the precision machining process, thereby improving the precision machining quality of the pill liner.
[0005] (II) Technical Solution
[0006] To solve the above-mentioned technical problems, this utility model provides a spherical head medicine mold cover machining and positioning device, including an inner core mold 1 and an outer core mold 2. The inner core mold 1 consists of a cone, a first cylinder, and a second cylinder from top to bottom. The end of the cone is machined into a spherical head. The diameter of the first cylinder is equal to the diameter of the bottom surface of the cone and larger than the diameter of the second cylinder. One end of the spherical head of the inner core mold 1 can be inserted into the medicine mold cover blank for machining and positioning. The outer core mold 2 is fitted on the inner core mold 1 and is a hollow cylinder. The shape of the inner hole matches the lower part of the cone and the upper part of the first cylinder of the inner core mold 1.
[0007] This invention also provides a tooling for preparing the device.
[0008] This invention also provides a shaped charge liner prepared using the aforementioned apparatus.
[0009] This invention also provides a projectile comprising the aforementioned shaped charge liner.
[0010] This invention also provides a warhead comprising the aforementioned shaped charge shroud.
[0011] (III) Beneficial Effects
[0012] This invention provides a positioning device for machining spherical head pill mold covers. This device is mainly used for fixing and precisely positioning spherical head pill mold covers during machining, especially in precision machining. Specifically, the spherical head pill mold cover is firmly fixed by a threaded connection between an inner core mold and an outer core mold, greatly improving the precision machining accuracy of the pill mold cover. This device is simple and easy to operate, improves work efficiency, enhances the production quality of pill mold covers, and saves time and labor. Attached Figure Description
[0013] Figure 1 This is a sectional view of the blank of the drug-shaped cover;
[0014] Figure 2 This is a schematic diagram of the processing and positioning device of this utility model, where a is a schematic diagram of the inner core mold and b is a schematic diagram of the outer core mold;
[0015] Figure 3 The diagram shows the process of manufacturing the large end face of the shaped drug liner using the device of this invention, where a is a schematic diagram before manufacturing and b is a schematic diagram after manufacturing.
[0016] Figure 4 The diagram shows the small end face of the drug shaped cover made using the device of this utility model, where a is the diagram before making the cover and b is the diagram after making the cover. Detailed Implementation
[0017] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0018] In the machining process of spherical shaped cartridge cases, it is not possible to use only one type of inner mold. To solve the machining problems of spherical cartridge cases and improve the machining quality, this utility model designs a machining positioning device for spherical head cartridge cases. This device is mainly used for fixing parts and accurately positioning spherical head cartridge cases in machining, especially in precision machining. Components designed based on this principle can also be applied to other similar cartridge cases or parts.
[0019] refer to Figure 2The present invention provides a spherical medicine cover machining and positioning device, the main components of which are an inner core mold 1 and an outer core mold 2, both made of 2A12 aluminum rod material, and manufactured by general machining methods such as blanking, turning and drilling. The whole process is simple to operate and can be mass-produced when the demand is large. The inner core mold 1 consists of a cone, a first cylinder, and a second cylinder from top to bottom. The end of the cone is machined into a spherical head. The diameter of the first cylinder is equal to the diameter of the bottom surface of the cone and larger than the diameter of the second cylinder. One end of the spherical head of the inner core mold 1 can be inserted into the blank of the drug-shaped cover for machining and positioning. The outer core mold 2 is fitted onto the inner core mold 1 and is a hollow cylinder. The shape of the inner hole matches the lower part of the cone and the upper part of the first cylinder of the inner core mold 1. When the blank of the drug-shaped cover is placed at one end of the spherical head of the inner core mold 1, the large end face of the blank of the drug-shaped cover can be machined. After machining, when the outer core mold 2 is fitted onto the outer surface of the blank of the drug-shaped cover, the inner core mold 1 and the outer core mold 2 are screwed together to fix the blank of the drug-shaped cover, and the small end face of the blank of the drug-shaped cover can be machined.
[0020] The specific usage method is shown in the attached diagram: Before precision machining, the propellant liner blank is obtained through methods such as spinning or electroforming (e.g., Figure 1 As shown), the inner shape of the shaped shroud usually does not need to be machined. The main focus is on machining the outer shape of the shaped shroud. Place the shaped shroud blank on the inner core mold 1 and machine the large end face. After machining, put the outer core mold 2 on the outer surface of the shaped shroud. Tighten the inner core mold 1 and the outer core mold 2 with threads to fix the shaped shroud blank. Machin the small end face of the shaped shroud. The machining of the shaped shroud is now complete.
[0021] The following is for reference. Figure 3 , Figure 4 This invention describes its usage and technical effects.
[0022] The same type of drug cover blank is machined separately. Drug cover blank one is machined using only inner core mold 1 throughout the entire process. Drug cover blank two is machined using both inner core mold 1 and outer core mold 2. After machining, the process parameters of the two drug cover blanks are tested.
[0023] The operation method for using inner core mold 1 to make a blank of medicine shaped cover is as follows: place the blank of medicine shaped cover into inner core mold 1, rough turn the large end face, rough turn the small end face, turn the outer shape, finish turn the large end face, finish turn the small end face, and the turning is completed.
[0024] The operation method for using inner core mold 1 and outer core mold 2 for the second blank of the medicine mold cover is as follows: Place the second blank of the medicine mold cover into the inner core mold 1, rough machine the large end face. After the rough machining of the large end face is completed, put the outer core mold 2 onto the outer surface of the medicine mold cover, tighten the inner core mold 1 and the outer core mold 2 with threads, rough machine the small end face of the second blank of the medicine mold cover, after the rough machining is completed, unscrew the outer core mold 2, machine the outer shape of the medicine mold cover, and then finish machine the large end face of the medicine mold cover. After completion, install the outer core mold 2 again, tighten the inner core mold 1 and the outer core mold 2 with threads, finish machine the small end face of the medicine mold cover, and the medicine mold cover is completed.
[0025] Two shaped charge covers were tested for key process parameters. The required process parameters were (2.33±0.02) mm and (3.52±0.02) mm. The measurement results for the first shaped charge cover blank were (2.0~2.7) mm and (2.9~3.8) mm. The measurement results for the second shaped charge cover blank were (2.32~2.33) mm and (3.52~3.53) mm. The measurement results show that the shaped charge cover made using only the inner core mold 1 completely exceeds the specified process parameter range, and the accuracy is insufficient, failing to meet the process requirements. However, the shaped charge cover made using both the inner core mold 1 and the outer core mold 2 fully meets the process parameters, has higher accuracy, and can greatly improve the quality requirements of the shaped charge cover.
[0026] It can be seen that this utility model has the following characteristics:
[0027] (1) The device has a simple structure, is easy to operate, and saves time and effort;
[0028] (2) The device is manufactured using mature machining methods and can be mass-produced.
[0029] (3) The device can effectively fix and position the shaped charge cover precisely, meeting its requirements for precision machining of the shaped charge cover;
[0030] (4) The device is low in cost and can be widely used in fields such as machining.
[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A positioning device for machining spherical head drug-shaped covers, characterized in that, It includes an inner core mold (1) and an outer core mold (2). The inner core mold (1) consists of a cone, a first cylinder, and a second cylinder from top to bottom. The end of the cone is machined into a spherical head. The diameter of the first cylinder is equal to the diameter of the bottom surface of the cone and is larger than the diameter of the second cylinder. One end of the spherical head of the inner core mold (1) can be inserted into the blank of the drug-shaped cover for machining and positioning. The outer core mold (2) is fitted on the inner core mold (1) and is a hollow cylinder. The shape of the inner hole matches the lower part of the cone and the upper part of the first cylinder of the inner core mold (1).
2. The apparatus as claimed in claim 1, characterized in that, When the blank of the medicine mold is placed at one end of the spherical head of the inner core mold (1), the large end face of the medicine mold blank can be machined. After the machining is completed, when the outer core mold (2) is placed on the outer surface of the medicine mold blank, the inner core mold (1) and the outer core mold (2) are screwed together with threads to fix the medicine mold blank, and the small end face of the medicine mold blank can be machined.
3. The apparatus as described in claim 1, characterized in that, The inner core mold (1) is made of 2A12 aluminum rod material.
4. The apparatus as claimed in claim 1, characterized in that, The outer core mold (2) is made of 2A12 aluminum rod material.
5. The apparatus as claimed in claim 1, characterized in that, The inner core mold (1) is manufactured by blanking, turning, and drilling.
6. The apparatus as claimed in claim 1, characterized in that, The outer core mold (2) is manufactured by blanking, turning and drilling.