Pyrolytic boron nitride ceramic demolding tool

Abstract

The utility model provides a pyrolytic boron nitride ceramic demolding tool. The pyrolytic boron nitride ceramic demolding tool comprises an adjustable arch piece, a cutting line and an adapter piece. Wherein the adjustable arch-shaped piece is detachably connected with the machine tool through the adapter piece, and the two ends of the cutting line are installed at the two ends of the adjustable arch-shaped piece respectively; the adjustable arch-shaped piece is further provided with a tensioning mechanism. The tool is simple in design structure, low in cost, stable and reliable to use and wide in application range based on the adjustable design, new tools do not need to be specially machined and customized for different ceramic parts, adjustment can be conducted according to requirements, the tool is matched with an adapter to be suitable for a common machining machine tool, efficiency is improved, and meanwhile the overall cost is reduced.

Description

Technical Field

[0001] The present application belongs to the field of machining technology, and specifically relates to a pyrolytic boron nitride ceramic demoulding tool. Background Art

[0002] In the demolding process of pyrolytic boron nitride ceramics, the most common demolding method is to use diamond cutting wire, make a cuttable demolding pyrolytic boron nitride crucible and corresponding demolding tooling, and use a special wire cutting machine to cut the mold in order to demold the ceramic parts.

[0003] However, the current demoulding methods require different fixtures to be made for use on the wire cutting machine due to the different shapes of the plates and crucibles, or directly use diamond cutting blades for cutting and demoulding. These methods have inevitable defects, as follows:

[0004] 1. Wire cutting: Different fixtures are made to adapt to ceramics, which increases the cost and can only be used on special wire cutting machines, such as a diamond wire cutting machine disclosed in Chinese patent CN213672209U; the fixtures or tooling designed by the above technical solution cannot be used in other equipment, so the use is relatively limited;

[0005] 2. Saw blade cutting: Diamond cutting blades are very likely to damage pyrolytic boron nitride ceramic parts during use, causing surface ceramic chipping and breakage;

[0006] Therefore, it is also necessary to improve the existing demolding tooling so that it can cope with different ceramic demolding scenarios, and demolding cutting can be performed on conventional equipment without customization or minor modifications. Utility Model Content

[0007] In view of the problems existing in the prior art, the present application provides a pyrolytic boron nitride ceramic demoulding tooling to solve the above problems.

[0008] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0009] The present application provides a pyrolytic boron nitride ceramic demoulding tool, which mainly includes an adjustable bow, a cutting line and a transition piece;

[0010] The adjustable bow-shaped member is detachably connected to the machine tool via the adapter;

[0011] The two ends of the cutting line are respectively mounted on the two ends of the adjustable bow-shaped member;

[0012] The adjustable bow is also provided with a tensioning mechanism.

[0013] Optionally, the adjustable bow member includes an upper support arm, a lower support arm, an upper support rod and a lower support rod;

[0014] One end of the upper support arm is connected to the upper support rod through a locking member, and the other end is connected to the cutting line through a locking member;

[0015] One end of the lower support arm is connected to the lower support rod through a locking member, and the other end is connected to the cutting line through a locking member;

[0016] The upper support rod and the lower support rod are connected via the tensioning mechanism.

[0017] Optionally, the adapter is a boss structure and is fixedly connected to the upper arm or the lower arm;

[0018] The adapter is also detachably connected to the machine tool via an external fixture.

[0019] Optionally, at least one positioning hole is respectively provided on the upper support arm and the lower support arm;

[0020] Bolts are also provided at the ends of the upper support rod and the lower support rod;

[0021] The bolts pass through corresponding positioning holes and are locked and positioned with the upper and lower supporting arms through nuts.

[0022] Optionally, an anti-twist connecting rod is also included, and both ends of the anti-twist connecting rod are respectively inserted into the positioning holes of the upper and lower supporting arms, and are connected to the upper and lower supporting arms through a locking piece.

[0023] Optionally, the locking member is a self-locking nut, a double nut, or a nut with a retaining washer.

[0024] Optionally, the distances between two adjacent positioning holes in the upper and lower arms are not all the same.

[0025] Optionally, the tensioning mechanism is an adjustable screw;

[0026] The upper support rod and the lower support rod are both provided with internal threads, and are matched with the threads of the adjustable screw.

[0027] Optionally, the adjustable screw is an external hexagon stud bolt.

[0028] Optionally, the spiral directions of the threaded parts at two ends of the adjustable screw are opposite.

[0029] Compared with the prior art, this application has the following beneficial effects:

[0030] The present application provides a demolding tool for pyrolytic boron nitride ceramics, which has a simple design structure, low cost, stable and reliable use, and a wide range of applications based on an adjustable design. No new tooling needs to be specially processed and customized for different ceramic parts, and it can be adjusted according to demand. It can be used with adapters for ordinary processing machine tools such as horizontal or vertical ones, thereby improving efficiency while reducing overall costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a stereogram in a specific embodiment of the present application;

[0033] Figure 2 It is the main view in a specific embodiment of the present application;

[0034] Figure 3 It is an exploded view of a specific embodiment of the present application;

[0035] Figure 4 This is a structural view of the anti-twist connecting rod installed in a specific embodiment of the present application.

[0036] In the figure: 1-upper support arm; 2-upper nut; 3-upper support rod; 4-adjustable screw; 5-adapter; 6-lower support rod; 7-lower nut; 8-lower support arm; 9-cutting line; 10-anti-twist connecting rod. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] 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.

[0039] In the description of the present application, it should be understood that the relative relationships indicated by the terms "upper" and "lower" are based on the comparison results of parameters in actual applications, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific numerical range, and therefore cannot be understood as a limitation on the present application.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] It should also be noted that the methods used in this application are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0042] This application provides a Figure 1 , Figure 2 The pyrolytic boron nitride ceramic demolding tool shown mainly includes an adjustable bow, a cutting wire and a transition piece.

[0043] The adjustable bow of this embodiment is composed of multiple parts. Figure 3As shown, it includes an upper support arm 1, a lower support arm 8, an upper support rod 3 and a lower support rod 6. The upper support arm 1 and the lower support arm 8 are both strip-shaped structures, which are arranged horizontally. One end of the upper support arm 1 is connected to the upper support rod 3 through a locking member, and the other end is connected to the cutting line 9 through a locking member; one end of the lower support arm 8 is connected to the lower support rod 6 through a locking member, and the other end is connected to the cutting line 9 through a locking member. Further, the locking member fixes the support arm and the support rod in a threaded connection manner, and the specific structure includes a nut and a bolt. The upper part of the upper support rod 3 is provided with a coaxial protruding bolt, and a corresponding positioning hole is processed on the upper support arm 1. The bolt is locked and fixed with the upper nut 2 after passing through the positioning hole; correspondingly, the lower part of the lower support rod 6 is provided with a coaxial protruding bolt, and a corresponding positioning hole is processed on the lower support arm 8. The bolt is locked and fixed with the lower nut 7 after passing through the positioning hole. Preferably, in order to prevent twisting between each support arm and the corresponding support rod, which affects the demoulding accuracy, the above-mentioned nut is designed to be one of a self-locking nut, a double nut or a nut with a back-stop washer to increase the stability of the adjustable bow. Furthermore, in order to achieve the ability of lateral adjustment, a plurality of positioning holes are processed on the upper and lower support arms respectively, so that different positioning holes can be installed through the upper and lower support rods to change the spatial position of the cutting line 9. Due to the demoulding of different types of ceramic parts, the spacing between two adjacent positioning holes on a single support arm is not designed to be completely the same, so that the purpose of quickly adapting the workpiece can be achieved by combining the cutting line 9 and the upper and lower support rod installation positions.

[0044] The upper support rod 3 and the lower support rod 6 are coaxially connected through a tensioning mechanism; preferably, the tensioning mechanism is an adjustable screw 4, and a common internal thread is added to the end faces of the upper support rod 3 and the lower support rod 6; the adjustable screw 4 is specifically an external hexagonal stud bolt, and the spiral directions of the threaded parts at both ends are processed into opposite directions. The adjustable screw 4 is threadedly connected to the upper and lower support rods respectively. When it is necessary to adjust the spacing between the upper and lower arms, the operator can change the spacing by twisting the adjustable screw 4 with a wrench, thereby tensioning the cutting line 9 to prevent the line from deviating when cutting and demolding the ceramic parts, causing damage to the ceramic parts. Furthermore, the cutting line 9 of this embodiment is a diamond cutting line.

[0045] The adjustable bow is detachably connected to the machine tool through the adapter 5; preferably, the adapter 5 is designed as a boss structure. In this embodiment, the adapter 5 is fixedly connected to the lower arm 6 and detachably connected to the machine tool through an external fixture; the working end of the fixture is a clamping structure, and the fixed end is installed on the tool holder of the machine tool through bolts. The working end clamps the adapter 5 to complete the installation of the tooling and the machine tool of this embodiment.

[0046] The tooling of this embodiment is used to install the cutting wire 9 for cutting and demoulding. When in use, the ceramic part to be demoulded must be fixed on the chuck or other clamping position of the machine tool, and the cutting and demoulding can be performed by controlling the feed amount of the cutting wire 9 and the rotation speed of the workpiece through the program.

[0047] In another embodiment, in order to prevent the unstable connection between the upper and lower supporting arms and the upper and lower supporting rods from affecting the demoulding accuracy, Figure 4 As shown, an anti-twist connecting rod 10 is added, which passes through the spare positioning holes of the upper and lower supporting arms and is locked at both ends by nuts, thereby increasing the overall stability of the tooling.

[0048] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present application, rather than to limit the scope of protection of the present application. Simple modifications or equivalent substitutions of the technical solution of the present application by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present application.

Claims

1. A pyrolytic boron nitride ceramic demoulding tool, characterized in that: Includes adjustable bow, cutting line and adapter; The adjustable bow-shaped member is detachably connected to the machine tool via the adapter; The adjustable bow-shaped member comprises an upper support arm, a lower support arm, an upper support rod and a lower support rod; the adjustable bow-shaped member is also provided with a tensioning mechanism; One end of the upper support arm is connected to the upper support rod through a locking member, and the other end is connected to the cutting line through a locking member; One end of the lower support arm is connected to the lower support rod through a locking member, and the other end is connected to the cutting line through a locking member; The upper support rod and the lower support rod are connected via the tensioning mechanism; the tensioning mechanism is an adjustable screw; The upper support rod and the lower support rod are both provided with internal threads, which cooperate with the threads of the adjustable screw; The adapter is a boss structure and is fixedly connected to the upper arm or the lower arm; the adapter is also detachably connected to the machine tool through an external fixture; The two ends of the cutting line are respectively installed on the two ends of the adjustable bow.

2. The pyrolytic boron nitride ceramic demoulding tooling according to claim 1, characterized in that: At least one positioning hole is respectively provided on the upper support arm and the lower support arm; Bolts are also provided at the ends of the upper support rod and the lower support rod; The bolts pass through corresponding positioning holes and are locked and positioned with the upper and lower supporting arms through nuts.

3. The pyrolytic boron nitride ceramic demoulding tool according to claim 2, characterized in that: It also includes an anti-twist connecting rod, the two ends of which are respectively inserted into the positioning holes of the upper and lower supporting arms, and are connected to the upper and lower supporting arms through a locking piece.

4. The demoulding tool for pyrolytic boron nitride ceramics according to claim 2, characterized in that: The locking piece is a self-locking nut, a double nut or a nut with a retaining washer.

5. The pyrolytic boron nitride ceramic demoulding tool according to claim 2, 3 or 4, characterized in that: In the upper and lower supporting arms, the distances between two adjacent positioning holes are not all the same.

6. The demoulding tool for pyrolytic boron nitride ceramics according to claim 1, characterized in that: The adjustable screw is an external hexagon stud bolt.

7. The demoulding tool for pyrolytic boron nitride ceramics according to claim 6, characterized in that: The spiral directions of the threaded parts at two ends of the adjustable screw are opposite.

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