Propellant processing tool and propellant processing equipment

Abstract

The invention relates to the field of propellant processing instruments, in particular to a propellant processing tool and propellant processing equipment. The propellant machining cutter comprises a cutter head, a cutter handle, a plurality of cutter heads and a plurality of blades. The cutter handle is connected to one side of the cutter head and used for being in transmission connection with an external driving main shaft. The multiple tool bits are connected to the other side of the cutter head and arranged around the axis of the cutter head at intervals, and each tool bit is correspondingly connected with at least one blade. Wherein the distances from the multiple tool bits to the axis of the cutter head are increased or decreased in sequence in the axis direction of the cutter head. The propellant machining tool is applied to propellant machining equipment, in the propellant machining process of the propellant machining tool, generated tool chips are in a sheet shape, small tool chips and overlong cutting chips are not wound around the tool, chip removal is smooth, then the safety of the propellant machining process can be improved, automation and unmanned operation of the propellant machining process can be easily achieved, and the propellant machining efficiency is improved. And the shaping processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of propellant processing equipment, and in particular to a propellant processing tool and a propellant processing device. Background Art

[0002] Solid propellant is an energetic material commonly used in rocket engines. It can be regarded as a viscoelastic body with a high solid content and high energy density. It often contains certain corrosiveness, which makes the machining of solid propellant difficult. During the machining process, if there are high local temperatures and pressures, there is a risk of combustion and explosion.

[0003] However, in the production process of solid rocket engines, propellant shaping is still an inevitable process. In the current shaping process, the traditional manual shaping method is still widely used, which is face-to-face operation, with high risk factor, high labor intensity, and the shaping quality cannot be guaranteed. A small number of them are shaped by milling, but due to the influence of the tool, if the processed solid propellant chips are too small, the small chips generated are easy to enter the tool body or other parts of the equipment, and the risk of explosion is easy to occur during the operation of the equipment; if the processed solid propellant chips are too long, the chips generated are easy to enter the entanglement of the tool, which will affect the shaping accuracy and cause the engine to be scrapped, and the entangled solid propellant debris is easy to explode. Summary of the invention

[0004] The purpose of the present invention includes providing a propellant processing tool and a propellant processing equipment, which, during the process of processing the propellant, produces flaky chips, no fine chips, no excessively long chips entangled with the tool, and smooth chip removal, thereby improving the safety of the propellant processing process, facilitating the automation and unmanned operation of the propellant processing process, and improving the efficiency of the shaping processing.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a propellant processing tool, the propellant processing tool comprising a cutter disc, a tool handle, a plurality of cutter heads and a plurality of blades;

[0007] The knife handle is connected to one side of the knife disc, and the knife handle is used for transmission connection with an external driving spindle; multiple knife heads are connected to the other side of the knife disc and are arranged at intervals around the axis of the knife disc, and each knife head is correspondingly connected to at least one blade;

[0008] Among them, around the axis direction of the cutter disc, the distances from the plurality of cutter heads to the axis of the cutter disc increase or decrease successively.

[0009] In an optional embodiment, the blade is connected to one end of the cutter head around the axis of the cutter disc, and the other end of the cutter head is bent toward the axis of the cutter disc.

[0010] In an alternative embodiment, each blade extends in a radial direction of the cutter disc.

[0011] In an optional embodiment, each cutter head is provided with a mounting groove for mounting the cutter disc, and a fixing hole is provided in the groove wall of the mounting groove, and the blade is fixed to the mounting groove by a set screw threadedly connected to the fixing hole.

[0012] In an optional embodiment, around the axis of the cutter disc, the angle between any two adjacent cutter heads is a preset angle;

[0013] Among them, the preset angle is 90°-150°.

[0014] In an optional embodiment, the propellant machining tool includes three cutter heads, and the three cutter heads are arranged around the axis of the cutter disc at an interval of 120°.

[0015] In an optional embodiment, the cutter disc is provided with a mounting hole coaxial therewith; the cutter handle is connected to the cutter disc via a connecting bolt threadedly connected to the mounting hole.

[0016] In an optional embodiment, a sealing member for closing the mounting hole is disposed on the side of the cutter disc facing away from the cutter handle.

[0017] In an alternative embodiment, the tool holder is provided with a Morse taper connection for connection to a drive spindle.

[0018] In a second aspect, the present invention provides a propellant processing device, the propellant processing device comprising a device body, a driving spindle and the above-mentioned propellant processing tool;

[0019] The propellant processing tool is transmission-connected to the driving spindle and is used for processing the propellant clamped on the equipment body.

[0020] The beneficial effects of the propellant processing tool and the propellant processing equipment provided by the embodiments of the present invention include:

[0021] The propellant processing tool includes a cutter disc, a tool handle, a plurality of cutter heads and a plurality of blades; the tool handle is connected to one side of the cutter disc, and the tool handle is used for transmission connection with an external driving spindle; the plurality of cutter heads are connected to the other side of the cutter disc, and are arranged at intervals around the axis of the cutter disc, and each cutter head is correspondingly connected to at least one blade; wherein, around the axis direction of the cutter disc, the distances from the plurality of cutter heads to the axis of the cutter disc increase or decrease in sequence. The propellant processing tool is applied to propellant processing equipment, and in the process of processing the propellant, the generated cutting chips are in the form of flakes, without fine cutting chips, without excessively long cutting chips entangled with the cutter, and the chip removal is smooth, thereby improving the safety of the propellant processing process, facilitating the automation and unmanned operation of the propellant processing process, and improving the efficiency of shaping processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the propellant processing tool provided in this embodiment from a first perspective;

[0024] Figure 2 A schematic diagram of the structure of the propellant processing tool provided in this embodiment from a second viewing angle;

[0025] Figure 3 A schematic diagram of the structure of the propellant processing tool provided in this embodiment from a third viewing angle;

[0026] Figure 4 A schematic diagram of the structure of the cutter disc provided in this embodiment from a first viewing angle;

[0027] Figure 5 A schematic diagram of the structure of the cutter disc provided in this embodiment from a second viewing angle;

[0028] Figure 6 A schematic diagram of the installation of the set screws and connecting bolts provided in this embodiment from a first viewing angle;

[0029] Figure 7 This is a schematic diagram of the installation of the set screws and connecting bolts provided in this embodiment from a second viewing angle.

[0030] Icons: 100-propellant processing tool; 110-tool disc; 120-tool handle; 130-tool head; 140-blade; 131-mounting groove; 132-fixing hole; 133-setting screw; 111-mounting hole; 112-connecting bolt; 113-seal; 121-Morse taper connection. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0037] Solid propellant is an energetic material commonly used in rocket engines. It can be regarded as a viscoelastic body with a high solid content and high energy density. It often contains a certain degree of corrosiveness, which makes it difficult to machine solid propellants. During the machining process, if there is a high local temperature and pressure, it is easy to cause explosion. However, in the production process of solid rocket engines, propellant shaping is still an inevitable process. In the current shaping process, traditional manual shaping methods are still widely used, which are face-to-face operations. It has a high risk factor, high labor intensity, and the shaping quality cannot be guaranteed. A small number of them are shaped by milling, but due to the influence of the tool, if the processed solid propellant chips are too small, the fine chips generated are easy to enter the tool body or other positions of the equipment, and the risk of explosion is easy to occur during the operation of the equipment; if the processed solid propellant chips are too long, the chips generated are easy to enter the entanglement of the tool, which will affect the shaping accuracy and cause the engine to be scrapped, and the entangled solid propellant debris is easy to explode.

[0038] However, the inventors have discovered through research that the blades of existing tools are evenly distributed on the circumferential surface of the tool disc, and their defects are: the chips cut by the blades will be cut twice or even multiple times by other blades during the rotation of the tool, and the chip removal is not smooth, which causes the chips to be broken into pieces. The broken chips are prone to cause the risk of explosion, which increases the safety risk in the shaping process and reduces the shaping efficiency.

[0039] For the above reasons, please refer to Figure 1-Figure 3 , this embodiment provides a propellant processing tool 100, the propellant processing tool 100 includes a tool disc 110, a tool handle 120, a plurality of tool heads 130 and a plurality of blades 140;

[0040] The handle 120 is connected to one side of the cutter disc 110, and the handle 120 is used for transmission connection with an external driving spindle; a plurality of cutter heads 130 are connected to the other side of the cutter disc 110, and are arranged at intervals around the axis of the cutter disc 110, and each cutter head 130 is correspondingly connected to at least one blade 140;

[0041] In which, around the axis direction of the cutter disc 110, the distances from the plurality of cutter heads 130 to the axis of the cutter disc 110 increase or decrease sequentially.

[0042] For the above reasons, please refer to Figure 1-Figure 3 The working principle of the propellant processing tool 100 is:

[0043] The propellant processing tool 100 includes a tool disc 110, a tool handle 120, a plurality of tool heads 130 and a plurality of blades 140;

[0044] The tool handle 120 is connected to one side of the cutter disc 110, and the tool handle 120 is used for transmission connection with an external driving spindle; multiple cutter heads 130 are connected to the other side of the cutter disc 110, so that the cutter disc 110 can be connected to the driving spindle of the device through the tool handle 120, and then the cutter disc 110 can be driven to rotate by the driving action of the driving spindle, thereby driving the multiple cutter heads 130 and blades 140 connected to the cutter disc 110 to process the propellant; and when the propellant processing tool 100 is used, the solid propellant is processed, and the processing purpose can be to shape or mill the propellant, and this embodiment is explained by taking the propellant processing tool 100 as an example to shape the solid propellant;

[0045] When connecting multiple cutter heads 130 to the cutter disc 110, a method of setting multiple cutter heads 130 at intervals around the axis of the cutter disc 110 is adopted, and each cutter head 130 is connected to at least one blade 140; and around the axis of the cutter disc 110, the distances from the multiple cutter heads 130 to the axis of the cutter disc 110 increase or decrease in sequence. This arrangement allows the multiple blades 140 to exhibit a step-by-step cutting feature during the cutting process. Specifically, during the cutting operation, the same chips are cut off one by one by the multiple blades 140, thereby avoiding the generation of fine chips; and the chips are cut off by the last level of the tool to avoid chips entanglement with the tool; the multiple cutter heads 130 are distributed inward in a circular manner, and chip grooves can be formed between different cutter heads 130 to facilitate the timely discharge of chips and prevent the chips from being cut a second time;

[0046] It should be noted that, in the present embodiment, around the axis direction of the cutter disc 110, the distances from the plurality of cutter heads 130 to the axis of the cutter disc 110 decrease in a clockwise direction. Similarly, the distances from the plurality of cutter heads 130 to the axis of the cutter disc 110 increase in a counterclockwise direction. The cutter heads 130 located at the outermost periphery of the cutter disc 110 are first-stage cutter heads 130, which are first in contact with the propellant when cutting the propellant, and the cutter heads 130 located at the innermost side of the cutter disc 110 are last-stage cutter heads 130.

[0047] Therefore, using the above-mentioned structural setting method, the cutting process is as follows:

[0048] During the shaping process, the first-stage cutter head 130 first contacts the medicine surface, and the subsequent cutter heads 130 are cut off by the blade 140 of the last-stage cutter head 130, thereby forming large pieces of medicine scraps.

[0049] First, the first-stage cutter head 130, which is the largest distance from the axis of the cutter disc 110, is located at the outermost side of the cutter disc 110, and the blade 140 on it contacts the propellant before the blades 140 on other cutter heads 130, tearing the powder column; then, the blades 140 on the remaining cutter heads 130 located between the first-stage cutter head 130 and the last-stage cutter head 130 contact the propellant step by step, gradually expanding the cracks of the powder chips. As the tool rotates, the number of cutter heads 130 involved in cutting gradually increases, and the cracks gradually expand; and the blade 140 on the last-stage cutter head 130 located at the innermost side of the cutter disc 110 contacts the propellant last, and is cut off by the blade 140 of the last-stage cutter head 130, thereby forming a large piece of powder chips;

[0050] Through the above-mentioned manner, the multiple blades 140 present the characteristics of step-by-step cutting during the cutting process, and during the cutting work, the same chips are cut off by the multiple blades 140 one by one, thereby avoiding the generation of fine chips, and the chips are cut off by the last-stage tool to avoid the chips being entangled with the tool; chip discharge grooves can be formed between adjacent tool heads 130 to facilitate timely discharge of chips and prevent the chips from being cut off twice;

[0051] Therefore, the propellant processing tool 100 is applied to propellant processing equipment. During the process of processing the propellant, the generated cutting chips are in flaky form, without fine cutting chips, without excessively long cutting chips entangled with the tool, and the chip removal is smooth. Thus, there is no risk of extrusion, combustion or explosion caused by fine cuttings, thereby improving the safety of the propellant processing process, facilitating the automation and unmanned operation of the propellant processing process, and improving the efficiency of the shaping processing.

[0052] Further, for the reasons stated above, please refer to Figure 1-Figure 7 In this embodiment, when configuring the cutter head 130, the blade 140 is connected to one end of the cutter head 130 in the direction of the axis of the cutter disc 110, and the other end of the cutter head 130 is bent toward the axis of the cutter disc 110. And each blade 140 extends along the radial direction of the cutter disc 110. Moreover, each cutter head 130 is provided with a mounting groove 131 for mounting the cutter disc 110, and a fixing hole 132 is provided in the groove wall of the mounting groove 131, and the blade 140 is fixed to the mounting groove 131 by a set screw 133 threadedly connected to the fixing hole 132. Through the above-mentioned structural manner, the quality and efficiency of the cutting propellant can be improved, and when configuring the blade 140, it can be convenient to replace and maintain the blade 140. Moreover, when configuring the cutter head 130 and the knife, metal materials such as aluminum alloy can be used, and the blade 140 is fixed to the cutter head 130 by the set screw 133, and the blade 140 can be quickly replaced after being worn. When manufacturing the blade 140, both non-alloy tool steel and alloy tool steel can meet the processing requirements. This type of blade 140 can use a standard blade 140, which is convenient for batch use, and the tool can be directly replaced after being worn, reducing the grinding cost.

[0053] When multiple cutter heads 130 are configured, the angle between any two adjacent cutter heads 130 around the axis of the cutter disc 110 is a preset angle; wherein the preset angle is 90°-150°. In this embodiment, the propellant processing tool 100 includes three cutter heads 130 as an example, and the three cutter heads 130 and the blades 140 connected to the cutter heads 130 adopt the same structural setting method; and the three cutter heads 130 are arranged at 120° intervals in pairs around the axis of the cutter disc 110. Figure 3As shown, the three cutter heads 130 are respectively a first-stage cutter head 130 , a second-stage cutter head 130 and a third-stage cutter head 130 , wherein the first-stage cutter head 130 is located at the outermost layer of the cutter disc 110 , and the third-stage cutter head 130 is located at the innermost layer of the cutter disc 110 .

[0054] To facilitate the connection between the blade 140 and the handle 120, the cutter head 110 is provided with a coaxial mounting hole 111; the handle 120 is connected to the cutter head 110 via a connecting bolt 112 threadedly connected to the mounting hole 111. A sealing member 113 is provided on the side of the cutter head 110 away from the handle 120 to close the mounting hole 111.

[0055] Through such a setting, the handle 120 is connected to the cutter head 110 through the connecting bolt 112. The seal 113 can prevent the broken chips from entering the rotating handle 120 along the axial direction, avoiding the risk of explosion during the propellant grain shaping process. In order to facilitate the connection between the handle 120 and the drive spindle, the handle 120 is equipped with a Morse cone connection part 121 for connecting to the drive spindle. The Morse cone structure can avoid the extrusion phenomenon that may occur in the detachable connection, and avoid the explosion phenomenon during the propellant processing process.

[0056] Based on the above, for the above reasons, please refer to Figure 1-Figure 7 The present invention also provides a propellant processing device, which includes a device body, a driving spindle and the above-mentioned propellant processing tool 100; the propellant processing tool 100 is transmission-connected to the driving spindle and is used to process the propellant clamped on the device body.

[0057] By adopting the above-mentioned propellant processing tool 100, the propellant processing equipment can produce flaky chips without fine chips, without excessively long chips entangled with the tool, and with smooth chip removal during the process of processing the propellant, thereby eliminating the risk of exploding or ignition caused by fine chips, thereby improving the safety of the propellant processing process, facilitating the automation and unmanned operation of the propellant processing process, and improving the efficiency of the shaping processing.

[0058] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A propellant processing tool, characterized in that: The propellant processing tool comprises a cutter disc, a tool handle, a plurality of cutter heads and a plurality of blades; The knife handle is connected to one side of the knife disc, and the knife handle is used for transmission connection with an external driving spindle; a plurality of the knife heads are connected to the other side of the knife disc, and are arranged at intervals around the axis of the knife disc, and each of the knife heads is correspondingly connected to at least one of the blades; Wherein, around the axis direction of the cutter disc, the distances from the plurality of cutter heads to the axis of the cutter disc increase or decrease sequentially.

2. The propellant processing tool according to claim 1, characterized in that: Around the axial direction of the cutter disc, the blade is connected to one end of the cutter head, and the other end of the cutter head is bent toward the axial direction of the cutter disc.

3. The propellant processing tool according to claim 2, characterized in that: Each of the blades extends in a radial direction of the cutter disc.

4. The propellant processing tool according to claim 1, characterized in that: Each of the cutter heads is provided with a mounting groove for mounting a cutter disc, and a fixing hole is provided on the groove wall of the mounting groove, and the blade is fixed to the mounting groove by a set screw threadedly connected to the fixing hole.

5. The propellant processing tool according to claim 1, characterized in that: Around the axis direction of the cutter disc, the angle between any two adjacent cutter heads is a preset angle; Wherein, the preset angle is 90°-150°.

6. The propellant processing tool according to claim 5, characterized in that: The propellant processing tool comprises three cutter heads, and the three cutter heads are arranged around the axis of the cutter disc at intervals of 120° in pairs.

7. The propellant machining tool according to any one of claims 1 to 6, characterized in that: The cutter disc is provided with a mounting hole coaxial therewith; the cutter handle is connected to the cutter disc via a connecting bolt threadedly connected to the mounting hole.

8. The propellant processing tool according to claim 7, characterized in that: A sealing member for closing the mounting hole is arranged on the side of the knife disc facing away from the knife handle.

9. The propellant processing tool according to claim 7, characterized in that: The tool handle is provided with a Morse taper connection for connection with the drive spindle.

10. A propellant processing device, characterized in that: The propellant processing equipment comprises an equipment body, a driving spindle and a propellant processing tool as claimed in any one of claims 1 to 9; The propellant processing tool is transmission-connected to the driving spindle and is used for processing the propellant clamped on the equipment body.

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