Triangular clamp for clamping cylinder

Abstract

The triangular clamp comprises a clamp body of a triangular prism structure, a clamping cavity is formed in the clamp body, the clamping cavity is arranged in the axial direction of the clamp body and penetrates through the clamp body, the inner wall of the clamping cavity is parallel to the side wall, close to the clamping cavity, of the clamp body, and the inner wall of the clamping cavity is parallel to the side wall, close to the clamping cavity, of the clamp body. A clamping bolt is arranged in one side wall of the clamp body, connected to the clamp body through a threaded structure and extends into the clamping cavity. The clamp is simple and practical, the punching rod / punching needle of a cylindrical structure is clamped through the clamping bolt and the two inner walls of the corresponding clamping cavity, the contact area is wide, the clamping effect is more stable, the punching rod / punching needle abuts against the two inner walls of the clamping cavity at the same time under the action of the clamping bolt and is automatically perpendicular to the bottom face and the top face of the clamp, the reference adjusting time is shortened, and the working efficiency is improved. And the clamping requirement that punching rods / punching needles of various specifications are contained in the clamping cavity is met, and the application range is widened.

Description

Technical Field

[0001] The present application relates to the technical field of cold heading dies, and in particular to a triangular clamp for clamping a cylinder. Background Art

[0002] The cold heading process is one of the few non-cutting metal pressure processing processes. It is a processing method that utilizes the plastic deformation of metal under the action of external force, and with the help of the mold, the metal volume is redistributed and transferred to form the required parts or blanks. In the cold heading mold, the punch rod / needle is an indispensable part. In order to facilitate identification and installation, it is usually necessary to process the specifications / models on the end face of the punch rod / needle. However, the hardness of the punch rod / needle itself is extremely high, reaching HRC60-67. Conventional engraving machines and milling cutters cannot process it, and spark machines need to be used for processing. The punch rod / needle is mostly a cylindrical structure. The flat-nose clamp of the spark machine has a small clamping force, and the reference needs to be repeatedly adjusted to ensure that the end face of the punch rod / needle is perpendicular to the electrode of the spark machine, resulting in a long processing cycle. Therefore, improvements need to be proposed. Utility Model Content

[0003] The utility model aims to provide a triangular clamp for clamping a cylinder to overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An embodiment of the present application discloses a triangular clamp for clamping a cylinder, comprising a clamp body with a triangular prism structure, a clamping cavity being arranged in the clamp body, the clamping cavity being arranged along the axial direction of the clamp body and passing through the clamp body, the inner walls of the clamping cavity being respectively parallel to the side walls of the clamp body close thereto, a clamping bolt being arranged in one side wall of the clamp body, the clamping bolt being connected to the clamp body through a threaded structure and extending into the clamping cavity.

[0006] Furthermore, in the above-mentioned triangular clamp for clamping a cylinder, the number of the clamping bolts is at least two.

[0007] Furthermore, in the above-mentioned triangular clamp for clamping a cylinder, the center axis of the clamping bolt is coplanar with the angle bisector of the dihedral angle opposite to it.

[0008] Furthermore, in the above-mentioned triangular clamp for clamping a cylinder, a locking nut is provided on the clamping bolt, and the locking nut is arranged on the outside of the clamping cavity.

[0009] Furthermore, in the above-mentioned triangular clamp for clamping a cylinder, an abutment portion protrudes from the end of the clamping bolt, and the end surface of the abutment portion facing away from the clamping bolt is a raised spherical structure.

[0010] Further, in the above triangular fixture for clamping a cylinder, the cross-section of the clamping cavity is an isosceles triangle.

[0011] Further, in the above triangular fixture for clamping a cylinder, the cross-section of the clamping cavity is an equilateral triangle.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: The triangular fixture for clamping a cylinder has a simple structure. The punch / pin of the cylinder structure is clamped by the clamping bolt and the two inner walls of the corresponding clamping cavity, with a wide contact area and a more stable clamping effect. Under the action of the clamping bolt, the punch / pin abuts against the two inner walls of the clamping cavity at the same time, automatically perpendicular to the bottom surface and the top surface of the fixture, reducing the time for adjusting the calibration reference, accommodating the clamping requirements of punch / pins of various specifications in the clamping cavity, and expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 The structure diagram of the triangular fixture for clamping a cylinder in a specific embodiment of the present utility model is shown.

[0015] Figure 2 The installation diagram of the punch / pin in a specific embodiment of the present utility model is shown.

[0016] Figure 3 The structure diagram of the clamping bolt in a specific embodiment of the present utility model is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will combine the drawings in the embodiments of the present utility model to describe the technical solutions in the embodiments of the present utility model in detail. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] See Figures 1 to 3 As shown, a triangular fixture for clamping a cylinder includes a fixture body 1 with a triangular prism structure. A clamping cavity 11 is arranged inside the fixture body 1. The clamping cavity 11 is arranged along the axial direction of the fixture body 1 and penetrates the fixture body 1. The inner walls of the clamping cavity 11 are respectively parallel to the side walls of the fixture body 1 close to it. A clamping bolt 2 is arranged inside a side wall of the fixture body 1. The clamping bolt 2 is connected to the fixture body 1 through a threaded structure and extends into the clamping cavity 11.

[0021] In this technical solution, the fixture body is a right triangular prism structure, which can be directly processed from existing triangular steel, etc., or can be processed after splicing with plates, etc., and can also be processed by conventional processes such as casting. A clamping cavity is arranged along the axial direction inside the fixture body, and the clamping cavity penetrates the bottom surface and the top surface of the fixture body. During use, the fixture body can be directly placed on the magnetic disk of the spark machine. The punch / pin to be processed is placed in the clamping cavity, and is abutted against the corresponding dihedral angle in the clamping cavity through the clamping bolt. The two surfaces of the dihedral angle are respectively tangent to the outer circular surface of the punch / pin. Cooperating with the clamping bolt, the punch / pin is clamped from three directions to ensure sufficient clamping force. At the same time, the two surfaces corresponding to the dihedral angle in the clamping cavity are respectively tangent to the outer circular surface of the punch / pin, that is, the axial direction of the punch / pin is parallel to the axis direction of the clamping cavity, that is, the top surface of the punch / pin is perpendicular to the electrode of the spark machine, reducing the time for adjusting the calibration reference and improving the processing efficiency; this triangular fixture for clamping a cylinder has a simple structure, clamps the punch / pin with a cylindrical structure through the clamping bolt and the two inner walls of the corresponding clamping cavity, has a wide contact area, and the clamping effect is more stable. Under the action of the clamping bolt, the punch / pin abuts against the two inner walls of the clamping cavity at the same time and is automatically perpendicular to the bottom surface and the top surface of the fixture, reducing the time for adjusting the calibration reference. The clamping cavity can accommodate the clamping requirements of various specifications of punch / pin, expanding the scope of application.

[0022] Exemplarily, referring to Figure 1 as shown, the number of the clamping bolts 2 is at least two.

[0023] In this technical solution, two clamping bolts are arranged along the same radial direction of the punch / pin and are spaced axially along the punch / pin, locking at multiple points to improve the clamping strength of the punch / pin.

[0024] Exemplarily, referring to Figure 1 and Figure 2 as shown, the central axis of the clamping bolt 2 is coplanar with the angular bisecting plane of its opposite dihedral angle.

[0025] In this technical solution, the clamping bolt is arranged along the radial direction of the punch / pin in the angular bisecting plane of its opposite dihedral angle, and the clamping bolt acts vertically on the punch / pin. The acting forces of the two planes of the corresponding dihedral angle on the punch / pin are equal in magnitude, improving the clamping stability of the punch / pin.

[0026] Exemplarily, referring to Figure 1 as shown, a locking nut 3 is arranged on the clamping bolt 2, and the locking nut 3 is arranged outside the clamping cavity 11.

[0027] In this technical solution, after the clamping bolt fixes the punch / pin, it is self-locked through the locking nut to prevent the clamping bolt from loosening due to vibration, etc. during the processing. After the processing is completed, the locking nut can be loosened to loosen the clamping bolt, so as to replace the punch / pin.

[0028] For example, see Figure 2 and Figure 3 As shown, an abutment portion 21 protrudes from the end of the clamping bolt 2, and the end surface of the abutment portion facing away from the clamping bolt 2 is a raised spherical structure.

[0029] In this technical solution, the spherical surface of the abutting portion abuts against the surface of the punch rod / punch needle, and when the clamping bolt is turned, the surface of the punch rod / punch needle will not be scratched.

[0030] For example, see Figure 1 and Figure 2 As shown, the cross section of the clamping cavity 11 is an isosceles triangle or an equilateral triangle.

[0031] In this technical solution, the clamp body is directly selected from an isosceles straight triangular prism or a regular triangular prism, the three side walls of the clamping cavity are respectively parallel to the side walls of the clamp body close to them, the cross-section of the clamping cavity is an isosceles triangle or an equilateral triangle, and the clamping bolt is set on the side wall corresponding to the base of the isosceles triangle or any side surface of the regular triangular prism, and is perpendicular to the side wall for easy processing.

[0032] To sum up, the triangular clamp for clamping the cylinder has a simple structure. The punch rod / needle of the cylindrical structure is clamped by the clamping bolt and the two inner walls of the corresponding clamping cavity. The contact area is wide and the clamping effect is more stable. Under the action of the clamping bolt, the punch rod / needle is simultaneously held against the two inner walls of the clamping cavity, automatically perpendicular to the bottom and top surfaces of the clamp, reducing the time for adjusting the reference. The clamping cavity can accommodate the clamping needs of punch rods / needles of various specifications, thereby expanding the scope of application.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A triangular fixture for clamping a cylinder, characterized in that, The invention comprises a clamp body of a triangular prism structure, wherein a clamp cavity is arranged in the clamp body, wherein the clamp cavity is arranged along the axial direction of the clamp body and passes through the clamp body, wherein the inner walls of the clamp cavity are respectively parallel to the side walls of the clamp body close thereto, wherein a clamping bolt is arranged in one side wall of the clamp body, wherein the clamping bolt is connected to the clamp body through a threaded structure and extends into the clamp cavity.

2. The triangular fixture for clamping a cylinder according to claim 1, characterized in that: The number of the clamping bolts is at least two.

3. The triangular fixture for clamping a cylinder according to claim 2, characterized in that: The center axis of the clamping bolt is coplanar with the angle bisector of the dihedral angle opposite to it.

4. The triangular fixture for clamping a cylinder according to claim 1, wherein: The clamping bolt is provided with a locking nut, and the locking nut is arranged outside the clamping cavity.

5. The triangular fixture for clamping a cylinder according to claim 1, characterized in that: An abutment portion protrudes from the end of the clamping bolt, and the end surface of the abutment portion facing away from the clamping bolt is a raised spherical structure.

6. The triangular fixture for clamping a cylinder according to any one of claims 1 to 5, characterized in that: The cross section of the clamping cavity is an isosceles triangle.

7. The triangular fixture for clamping a cylinder according to claim 6, wherein: The cross section of the clamping cavity is an equilateral triangle.

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