Jig for PVD (Physical Vapor Deposition) coating process of cutter

Abstract

The utility model discloses a jig for a PVD (Physical Vapor Deposition) coating process of a cutter, and belongs to the technical field of cutter processing. The mounting structure comprises a supporting seat and a mounting part, the mounting part comprises an upper circular plate and a lower circular plate, a first through hole is formed in the top of the upper circular plate, a first mounting groove is formed in the bottom of the upper circular plate, the first mounting groove is communicated with the first through hole, a clamping column is further arranged at the bottom of the upper circular plate, and a second mounting groove is formed in the top of the lower circular plate. A second through hole penetrates through the bottom of the inner wall of the second mounting groove, and a clamping groove is further formed in the top of the lower circular plate. Through the structural design of the limiting assembly, the annular clamping block and the supporting rod, the positioning requirements of milling cutters of various specifications can be met, a carrier does not need to be independently prepared for each type of cutter, the number and cost of carriers needed for cutter coating machining are greatly reduced, meanwhile, the carriers do not need to be frequently replaced in the production process, and the production efficiency is improved. And the die changing time and manual operation are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool processing, in particular to a fixture used in a PVD coating process of a tool. Background Art

[0002] In the metal processing industry, the performance and durability of cutting tools are directly related to production efficiency and cost. In order to improve the wear resistance, corrosion resistance and hardness of cutting tools, PVD coating technology is widely used. PVD coating technology deposits a thin layer of hard materials such as titanium nitride, aluminum titanium nitride, etc. on the surface of the cutting tool, which significantly improves the service life and processing quality of the cutting tool. During the PVD coating process, relevant jigs are required, including relevant carriers for fixing the cutting tool. The cutting tool needs to be properly fixed on a carrier so that it can be sent to the vacuum coating chamber for coating. The traditional carrier design usually adopts two pallets and a placement tube structure set on the pallet. Each placement tube is customized according to the size and shape of the cutting tool and is used to accommodate and fix the cutting tool to be coated.

[0003] This traditional carrier still has some shortcomings when used: specifically, since different specifications of tools require the use of placement tubes of different sizes, this leads to increased diversity and customization of carriers, thereby increasing production costs and time costs. At the same time, a large number of customized carriers also increase the demand for storage space. Therefore, in response to the above situation, a fixture for the PVD coating process of tools is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a jig for the PVD coating process of cutting tools. Through the structural design of the limit assembly, the annular clamping block and the support rod, it can be compatible with the positioning requirements of milling cutters of various specifications, solving the problem that different specifications of cutting tools require the use of placement tubes of different sizes, which results in high production costs.

[0005] The utility model is realized through the following technical solutions:

[0006] The utility model is a fixture for the PVD coating process of a cutting tool, comprising a support seat and a mounting piece, the mounting piece comprising an upper circular plate and a lower circular plate, the top of the upper circular plate is provided with a first through-hole, the bottom of the upper circular plate is provided with a first mounting groove, the first mounting groove is connected to the first through-hole, a clamping column is also provided at the bottom of the upper circular plate, a second mounting groove is provided at the top of the lower circular plate, a second through-hole is provided through the bottom of the inner wall of the second mounting groove, a clamping groove is also provided at the top of the lower circular plate, when the upper circular plate is matched with the lower circular plate, the clamping column is clamped on the clamping groove, the first mounting groove and the second mounting groove cooperate to form a mounting cavity, and a limiting mechanism is provided in the mounting cavity.

[0007] The limiting mechanism includes a limiting assembly, there are two limiting assemblies, a support rod is arranged between the two limiting assemblies, the limiting assembly includes an annular support plate, a limiting part is arranged on the annular support plate, there are three limiting parts, which are evenly distributed on the top of the annular support plate, the limiting part includes a support block and a main rod body, there are two support blocks, both ends of the main rod body are fixed with auxiliary rod bodies, the ends of the two auxiliary rod bodies away from the main rod body are rotatably matched with the support blocks through bearings, the outer walls of the two auxiliary rod bodies are sleeved with torsion springs, the two ends of the torsion springs are respectively connected to the limiting part and the main rod body, a connecting rod is fixed on the main rod body, a mounting frame is fixedly connected to the connecting rod, and a rotating roller is rotatably connected to the mounting frame through a bearing.

[0008] Furthermore, the support seat includes a circular bottom plate, a hollow cylinder is provided on the circular bottom plate, the top of the hollow cylinder has an opening, the bottom of the lower circular plate is fixedly connected to the hollow cylinder, and the opening of the hollow cylinder is connected to the second through hole.

[0009] Furthermore, an annular groove is formed at the bottom of the inner wall of the second installation groove.

[0010] Furthermore, an annular clamping block is provided at the bottom of one of the annular support plates, and when the limiting mechanism is assembled in the installation cavity, the annular clamping block is engaged with the annular groove.

[0011] Furthermore, through holes are provided at the center positions of the upper circular plate and the lower circular plate.

[0012] The utility model has the following beneficial effects:

[0013] The utility model is compatible with the positioning requirements of milling cutters of various specifications through the structural design of the limit assembly, the annular clamping block and the support rod. There is no need to prepare a separate carrier for each tool, thereby greatly reducing the number and cost of carriers required for tool coating processing. At the same time, there is no need to frequently replace carriers during the production process, which reduces mold change time and manual operation and improves production efficiency.

[0014] The utility model uses the structural design of the upper circular plate, the first mounting groove, the lower circular plate, the second mounting groove and the annular groove, which can realize the assembly and use of the mounting parts during use, thereby facilitating the assembly of the limiting mechanism and also facilitating the subsequent disassembly and maintenance of the limiting mechanism.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the fixture.

[0017] Figure 2 Schematic diagram of the bottom structure of the upper circular plate.

[0018] Figure 3 Schematic diagram of the top structure of the lower circular plate.

[0019] Figure 4 It is a structural diagram of the limiting mechanism.

[0020] Figure 5 It is a structural diagram of the limiting part.

[0021] In the figure: 1. support seat; 2. mounting part; 201. upper circular plate; 2010. first through-hole; 2011. first mounting groove; 2012. clamping column; 202. lower circular plate; 2020. second mounting groove; 2021. second through-hole; 2022. annular groove; 2023. clamping groove; 3. limiting mechanism; 301. limiting assembly; 3010. annular support plate; 3011. limiting part; 30110. support block; 30111. main rod body; 30112. auxiliary rod body; 30113. torsion spring; 30114. connecting rod; 30115. mounting frame; 30116. rotating roller; 302. annular clamping block; 303. support rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5 The utility model provides a technical solution: a jig for the PVD coating process of a cutting tool, comprising a support base 1 and a mounting member 2, wherein the support base 1 comprises a circular base plate with a hollow hole at the midpoint of the circular base plate, a hollow cylinder is provided on the circular base plate, and the top of the hollow cylinder has an opening, the bottom of the lower circular plate 202 is fixedly connected to the hollow cylinder, the opening of the hollow cylinder is connected to the second through-hole 2021, and the tail end of a cutting tool such as a milling cutter away from the cutter head can enter the hollow cylinder through the opening, thereby realizing the placement of the cutting tool.

[0024] The mounting member 2 includes an upper circular plate 201 , a first through-hole 2010 is provided on the top of the upper circular plate 201 , a first mounting groove 2011 is provided on the bottom of the upper circular plate 201 , the first mounting groove 2011 is connected to the first through-hole 2010 , and a clamping column 2012 is also provided on the bottom of the upper circular plate 201 .

[0025] The mounting member 2 includes a lower circular plate 202, a second mounting groove 2020 is provided on the top of the lower circular plate 202, a second through-hole 2021 is provided through the bottom of the inner wall of the second mounting groove 2020, an annular groove 2022 is provided on the bottom of the inner wall of the second mounting groove 2020, and a card groove 2023 is also provided on the top of the lower circular plate 202.

[0026] There are multiple first through-holes 2010 and multiple second through-holes 2021 , which are evenly distributed on the upper circular plate 201 and the lower circular plate 202 in a circular array. The first through-holes 2010 and the second through-holes 2021 are arranged in a one-to-one correspondence.

[0027] Among them, through holes are opened at the center positions of the upper circular plate 201 and the lower circular plate 202. In addition, the through holes and the hollow holes at the midpoints of the circular bottom plates facilitate the installation of the entire device on the rotating frame of the PVD coating processing equipment.

[0028] When the upper circular plate 201 and the lower circular plate 202 are matched, the clamping column 2012 is clamped on the clamping groove 2023, and the first installation groove 2011 and the second installation groove 2020 cooperate to form an installation cavity, and a limiting mechanism 3 is provided in the installation cavity.

[0029] The limiting mechanism 3 includes two limiting components 301 , and a support rod 303 is provided between the two limiting components 301 .

[0030] The limiting assembly 301 includes an annular support plate 3010 , on which a limiting portion 3011 is provided. There are three limiting portions 3011 evenly distributed on the top of the annular support plate 3010 .

[0031] An annular clamping block 302 is provided at the bottom of one of the annular support plates 3010 . When the limiting mechanism 3 is assembled in the installation cavity, the annular clamping block 302 is engaged with the annular groove 2022 .

[0032] Correspondingly, the annular clamping block 302 is engaged with the annular groove 2022 , so that the limiting mechanism 3 installed in the installation cavity is more stable.

[0033] The limiting part 3011 includes a support block 30110 and a main rod body 30111. The support block 30110 has two pieces. A sub-rod body 30112 is fixed at both ends of the main rod body 30111. The ends of the two sub-rod bodies 30112 away from the main rod body 30111 are rotatably cooperated with the support block 30110 through bearings. The outer walls of the two sub-rod bodies 30112 are sleeved with torsion springs 30113. The two ends of the torsion spring 30113 are respectively connected to the limiting part 3011 and the main rod body 30111. A connecting rod 30114 is fixed on the main rod body 30111. The connecting rod 30114 is fixedly connected to the mounting frame 30115. The mounting frame 30115 is rotatably connected to a rotating roller 30116 through a bearing. The rotating roller 30116 is made of rubber material.

[0034] When using this embodiment, the limiting mechanism 3 is first installed on the second installation groove 2020, so that the annular clamping block 302 is clamped in the 3022. After all the limiting mechanisms 3 are installed one by one, the upper circular plate 201 is taken out, and the clamping column 2012 is aligned with the clamping groove 2023 and then the upper circular plate 201 is pressed downward, so that the upper circular plate 201 and the lower circular plate 202 are assembled. Then the milling cutter to be processed is taken out, and the cutter head is inserted into the first through-hole 2010 with the cutter head facing upward. During the descent of the milling cutter, it will contact the rotating roller 30116 and push the rotating roller 30116 to move downward in an arc, thereby causing the connecting rod 30114 to rotate. During this process, the torsion spring 30113 is deformed. When the tail end of the milling cutter contacts the bottom of the hollow cylinder, the milling cutter is installed. At this time, under the action of the torsion spring 30113, the rotating roller 30116 always contacts the surface of the milling cutter to position the milling cutter, thereby ensuring the stability of the milling cutter during processing.

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A jig for a PVD coating process of a cutting tool, comprising a support seat (1), characterized in that: Also includes: A mounting member (2), the mounting member (2) comprising an upper circular plate (201), a first through-hole (2010) being provided at the top of the upper circular plate (201), a first mounting groove (2011) being provided at the bottom of the upper circular plate (201), the first mounting groove (2011) being in communication with the first through-hole (2010), and a clamping column (2012) being further provided at the bottom of the upper circular plate (201); The mounting member (2) comprises a lower circular plate (202), a second mounting groove (2020) is provided on the top of the lower circular plate (202), a second through-hole (2021) is provided through the bottom of the inner wall of the second mounting groove (2020), and a clamping groove (2023) is also provided on the top of the lower circular plate (202); When the upper circular plate (201) and the lower circular plate (202) are engaged, the clamping column (2012) is engaged with the clamping groove (2023), and the first mounting groove (2011) and the second mounting groove (2020) cooperate to form a mounting cavity, in which a limiting mechanism (3) is provided; The limiting mechanism (3) comprises a limiting assembly (301), there are two limiting assemblies (301), and a support rod (303) is provided between the two limiting assemblies (301); The limiting assembly (301) comprises an annular support plate (3010), and a limiting portion (3011) is provided on the annular support plate (3010). There are three limiting portions (3011) evenly distributed on the top of the annular support plate (3010); The limiting portion (3011) includes a support block (30110) and a main rod (30111). The support block (30110) has two pieces. A secondary rod (30112) is fixed to both ends of the main rod (30111). The ends of the two secondary rods (30112) away from the main rod (30111) are rotatably matched with the support block (30110) through bearings. The outer wall of each of the torsion springs (30113) is sleeved, and the two ends of the torsion spring (30113) are respectively connected to the limiting portion (3011) and the main rod body (30111), and a connecting rod (30114) is fixed on the main rod body (30111), and a mounting frame (30115) is fixedly connected to the connecting rod (30114), and a rotating roller (30116) is rotatably connected to the mounting frame (30115) through a bearing.

2. A jig for a PVD coating process for a cutting tool according to claim 1, characterized in that: The support seat (1) comprises a circular bottom plate, a hollow cylinder is provided on the circular bottom plate, the top of the hollow cylinder has an opening, the bottom of the lower circular plate (202) is fixedly connected to the hollow cylinder, and the opening of the hollow cylinder is connected to the second through hole (2021).

3. The fixture for PVD coating process of cutting tools according to claim 1, characterized in that: An annular groove (2022) is provided at the bottom of the inner wall of the second installation groove (2020).

4. A jig for a PVD coating process for a cutting tool according to claim 1 or 3, characterized in that: An annular clamping block (302) is provided at the bottom of one of the annular support plates (3010), and when the limiting mechanism (3) is assembled in the installation cavity, the annular clamping block (302) is engaged with the annular groove (2022).

5. The fixture for PVD coating process of cutting tools according to claim 1, characterized in that: Through holes are provided at the center positions of the upper circular plate (201) and the lower circular plate (202).

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