Process and structure for riveting ceramic needle on metal substrate

Abstract

The invention provides a technology and structure for riveting a ceramic needle on a metal substrate, and the technology comprises the following steps: 1, preparing the metal substrate, and forming a riveting hole in the metal substrate; 2, ceramic needles are prepared, and the ceramic needles are pre-installed in the riveting holes; and 3, a riveting mechanism is prepared, pressure is applied to the metal base material on the peripheral side of the riveting hole through the riveting mechanism, so that the metal base material on the peripheral side of the riveting hole is extruded towards the inner side of the riveting hole and interferes with the ceramic needle, and retention force is formed. According to the technology and structure for riveting the ceramic needle on the metal base material, the riveting mechanism applies pressure to the metal base material on the peripheral side of the riveting hole, so that the metal base material on the peripheral side of the riveting hole is extruded towards the inner side of the riveting hole and interferes with the ceramic needle, and retention force is formed; compared with a traditional interference assembly mode, the process has the advantages that the phenomena of needle breaking, needle breaking and needle breaking caused by the problem of the matching interference amount can be avoided, and the phenomena that metal powder scraps and metal chippings are generated and fall off in metal base material holes after interference fit can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of riveting technology, and in particular to a technology and structure for riveting ceramic needles on a metal substrate. Background Art

[0002] At present, in the semiconductor field and connector field, electrical characteristics and other application scenarios are special, and a ceramic needle part called AL²O³ is required. The ceramic needle is pressed on a metal copper or metal aluminum substrate to play an insulating and limiting support role. After the two materials are assembled, a certain holding force is required (needs to be greater than 10N, and the holding force specifications will increase with different requirements), and the ceramic needle cannot fall off the metal substrate.

[0003] Limited by the physical properties of the ceramic and metal substrate materials, the traditional interference assembly is adopted. The AL²O³ ceramic needle has a high hardness (HV≈1000), which is high in hardness and brittle. It is very easy to break the needle, break the needle, or break the needle due to the interference problem. After the interference fit, metal powder and metal debris will be generated and fall off in the hole of the metal substrate. If it falls on the circuit board, it will have a great impact on the electrical safety of the circuit.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to design a process and structure for riveting ceramic needles on a metal substrate to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a process and structure for riveting ceramic needles on a metal substrate.

[0006] To achieve the above-mentioned purpose and other related purposes, the technical solution provided by the present invention is: a process for riveting ceramic needles on a metal substrate, comprising the following steps: Step 1: Prepare a metal substrate and set riveting holes on the metal substrate; Step 2: Prepare the ceramic pin and pre-install it in the riveting hole; Step 3: Prepare a riveting mechanism, and apply pressure to the metal substrate around the riveting hole through the riveting mechanism, so that the metal substrate around the riveting hole is squeezed toward the inside of the riveting hole and interferes with the ceramic needle to form a holding force.

[0007] A preferred technical solution is that the diameter of the riveting hole is larger than the outer diameter of the ceramic needle.

[0008] The preferred technical solution is: the riveting mechanism is composed of a base, a top seat, a positioning plate, a fixed plate, a floating plate and a riveting punch; the positioning plate is fixed on the base and is used to position the metal substrate; the top seat is arranged directly above the positioning plate; the fixed plate is fixed on the bottom side of the top seat; the riveting punch is fixed on the bottom side of the fixed plate; the floating plate is floatingly connected to the bottom side of the fixed plate; and the floating plate is provided with a through hole for the riveting punch to pass through.

[0009] The preferred technical solution is: a guide column is fixedly provided on the top side of the floating plate, a guide sleeve corresponding to the guide column is provided on the fixed plate and the top seat, the guide column is inserted into the guide sleeve, and a stopper is fixedly provided on the top of the guide column.

[0010] A preferred technical solution is that the fixed plate and the floating plate are connected via a spring.

[0011] A structure of riveted ceramic needles on a metal substrate is manufactured by adopting the above-mentioned process of riveted ceramic needles on a metal substrate.

[0012] Due to the application of the above technical solution, the present invention has the following beneficial effects: The present invention proposes a process and structure for riveting ceramic needles on a metal substrate, in which a riveting mechanism applies pressure to the metal substrate on the side around the riveted hole, so that the metal substrate on the side around the riveted hole is squeezed toward the inside of the riveted hole and interferes with the ceramic needle to form a holding force; compared with the traditional interference assembly method, this process can avoid the phenomenon of broken needles, broken needles, and broken needles due to the problem of interference amount, as well as the phenomenon of metal powder and metal debris being generated and falling off in the hole of the metal substrate after interference fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the metal substrate riveted ceramic needle involved in the present invention.

[0014] Figure 2 The present invention is a schematic diagram of the riveting mechanism structure. DETAILED DESCRIPTION

[0015] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0016] See also Figure 1-Figure 2. It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. 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. In addition, the terms "first", "second", "third" and the like are only used to distinguish the descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Example: like Figure 1 to Figure 2 As shown, according to an overall technical concept of the present invention, a process for riveting ceramic needles on a metal substrate is provided, comprising the following steps: Step 1: prepare a metal substrate 1 and set a riveting hole on the metal substrate 1; Step 2: Prepare the ceramic needle 2 and pre-install the ceramic needle 2 in the riveting hole; Step 3: Prepare a riveting mechanism 3, and apply pressure to the metal substrate 1 around the riveting hole through the riveting mechanism 3, so that the metal substrate 1 around the riveting hole is squeezed toward the inside of the riveting hole and interferes with the ceramic needle 2 to form a holding force.

[0019] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the diameter of the riveting hole is larger than the outer diameter of the ceramic needle 2 .

[0020] like Figure 1 to Figure 2As shown, in an exemplary embodiment of the present invention, the riveting mechanism 3 is composed of a base 31, a top seat 32, a positioning plate 33, a fixed plate 34, a floating plate 35 and a riveting punch (not shown). The positioning plate 33 is fixed on the base 31 and is used to position the metal substrate 1. The top seat 32 is arranged directly above the positioning plate 33, the fixed plate 34 is fixed to the bottom side of the top seat 32, the riveting punch is fixed to the bottom side of the fixed plate 34, the floating plate 35 is floatingly connected to the bottom side of the fixed plate 34, and the floating plate 35 is provided with a through hole for the riveting punch to pass through.

[0021] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, a guide column (not shown) is fixedly provided on the top side of the floating plate 35, a guide sleeve corresponding to the guide column is provided on the fixed plate and the top seat, the guide column is inserted into the guide sleeve, and a stop block is fixedly provided on the top end of the guide column.

[0022] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the fixed plate 34 and the floating plate 35 are connected via a spring.

[0023] A structure of riveted ceramic needles on a metal substrate is manufactured by adopting the above-mentioned process of riveted ceramic needles on a metal substrate.

[0024] Therefore, the present invention has the following advantages: The present invention proposes a process and structure for riveting ceramic needles on a metal substrate, in which a riveting mechanism applies pressure to the metal substrate on the side around the riveted hole, so that the metal substrate on the side around the riveted hole is squeezed toward the inside of the riveted hole and interferes with the ceramic needle to form a holding force; compared with the traditional interference assembly method, this process can avoid the phenomenon of broken needles, broken needles, and broken needles due to the problem of interference amount, as well as the phenomenon of metal powder and metal debris being generated and falling off in the hole of the metal substrate after interference fit.

[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A process for riveting ceramic needles on a metal substrate, characterized in that: The following steps are involved: Step 1: Prepare a metal substrate and set riveting holes on the metal substrate; Step 2: Prepare the ceramic pin and pre-install it in the riveting hole; Step 3: Prepare a riveting mechanism, and apply pressure to the metal substrate around the riveting hole through the riveting mechanism, so that the metal substrate around the riveting hole is squeezed toward the inside of the riveting hole and interferes with the ceramic needle to form a holding force.

2. The process for riveting ceramic needles onto a metal substrate according to claim 1, characterized in that: The diameter of the riveting hole is larger than the outer diameter of the ceramic needle.

3. The process for riveting ceramic needles onto a metal substrate according to claim 1, characterized in that: The riveting mechanism is composed of a base, a top seat, a positioning plate, a fixed plate, a floating plate and a riveting punch. The positioning plate is fixed on the base and is used to position the metal substrate. The top seat is arranged directly above the positioning plate. The fixed plate is fixed on the bottom side of the top seat. The riveting punch is fixed on the bottom side of the fixed plate. The floating plate is floatingly connected to the bottom side of the fixed plate. The floating plate is provided with a through hole for the riveting punch to pass through.

4. The process for riveting ceramic needles onto a metal substrate according to claim 3, characterized in that: A guide column is fixedly arranged on the top side of the floating plate, a guide sleeve corresponding to and matching the guide column is arranged on the fixed plate and the top seat, the guide column is inserted into the guide sleeve, and a stopper is fixedly arranged on the top end of the guide column.

5. The process for riveting ceramic needles onto a metal substrate according to claim 3, characterized in that: The fixed plate and the floating plate are connected via a spring.

6. A structure of riveted ceramic needles on a metal substrate, characterized in that: The ceramic needle is made by the process of riveting ceramic needles on a metal substrate as described in any one of claims 1 to 5.

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