Clamping structure for manufacturing PCD cutter

Abstract

The utility model relates to the field of cutter machining and clamping, and discloses a clamping structure for manufacturing a PCD cutter, which comprises a Y-axis sliding seat capable of being arranged on a lathe bed in a sliding manner along a Y axis, an A-axis rotary table fixed on the Y-axis sliding seat, a tip sliding seat capable of being arranged on the Y-axis sliding seat in a sliding manner along an X axis, and a tailstock tip arranged on the tip sliding seat, the tailstock tip and the A-axis rotary table are coaxially arranged, and one end of the PCD cutter is clamped on the A-axis rotary table through a cutter handle. According to the clamping structure, PCD cutters of various structures can be installed on the A-axis rotary table in a compatible mode for laser machining through the cutter handle of the standard specification, a special clamp does not need to be designed for each PCD cutter, the design cost is greatly reduced, the time for replacing the clamp is greatly shortened, and the production efficiency is improved. In addition, through auxiliary supporting of the tailstock tip, the problem that the tail of the long-structure PCD cutter deviates in the machining process is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of tool processing and clamping, and particularly relates to a clamping structure for manufacturing PCD tools. Background Art

[0002] PCD (polycrystalline diamond) tools are tools made by welding PCD composite sheets to carbide or steel tool bodies. Since the PCD composite sheet combines the high hardness, wear resistance, low friction coefficient and strength of single crystal diamond with the high bending strength of tungsten carbide carbide, the tungsten carbide carbide layer of the composite sheet provides mechanical support for the diamond layer, increasing its bending strength. At the same time, the carbide layer is easy to weld, making it easy to manufacture finished tools, and is widely used in fields such as automotive, aerospace, electronics and wood processing.

[0003] The traditional method for manufacturing the edge of PCD tools is to use grinding wheels for grinding and electrical discharge machining. The grinding wheels used in the manufacturing of the edge of PCD tools are relatively expensive, and the PCD material has a high hardness and is difficult to grind, which undoubtedly brings high costs to the processing of PCD tools. Moreover, the edge quality of PCD tools processed by electrical discharge machining is poor, and there are serious chipping situations. Therefore, the manufacturing of the edge of PCD tools tends to use laser cutting methods for processing.

[0004] The A-axis turntable is equipped with a special fixture, and the PCD tool to be laser processed will be clamped by the special fixture to change the processing position during processing. However, the structures of the PCD tools provided by customers are diverse. If a special fixture needs to be designed to adapt to each type, not only does it require labor for design, but also the special fixture needs to be frequently replaced. In addition, for some PCD tools with longer structures, relying solely on the special fixture for clamping will cause a certain offset at the tail of the PCD tool, affecting the processing position accuracy.

[0005] It can be seen that the existing technology still needs to be improved. Content of the Utility Model

[0006] In view of the above deficiencies of the existing technology, the purpose of the present utility model is to provide a clamping structure for manufacturing PCD tools, aiming to quickly, conveniently and stably clamp and fix PCD tools for processing.

[0007] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] A clamping structure for manufacturing PCD tools, comprising a Y-axis slide seat slidably arranged on a lathe bed along the Y-axis, an A-axis turntable fixed on the Y-axis slide seat, a center slide seat slidably arranged on the Y-axis slide seat along the X-axis, and a tailstock center arranged on the center slide seat. The tailstock center is coaxially arranged with the A-axis turntable. One end of the PCD tool is clamped on the A-axis turntable through a tool holder. The center slide seat is driven by an X-axis driving mechanism to make the tailstock center approach or move away from the A-axis turntable, and the Y-axis slide seat is driven by a Y-axis driving mechanism.

[0009] As a further improvement of the above technical solution, a backing plate is arranged between the center slide seat and the tailstock center. An L-shaped block is fixedly arranged on the center slide seat. A pressing screw and a tightening screw are arranged on the L-shaped block and face one side of the backing plate. The pressing screw is used to press against the side surface of the backing plate, and the tightening screw is used to connect with a threaded hole on the side surface of the backing plate.

[0010] As a further improvement of the above technical solution, the Y-axis slide seat is slidably connected with the lathe bed through a first guide rail and a first slider, and the Y-axis driving mechanism is a linear motor.

[0011] As a further improvement of the above technical solution, a limit block for restricting the sliding stroke of the Y-axis slide seat is arranged on the lathe bed.

[0012] As a further improvement of the above technical solution, a first bellows cover for protecting the first guide rail, the first slider and the Y-axis driving mechanism is arranged on the lathe bed.

[0013] The center slide seat is slidably connected with the Y-axis slide seat through a second guide rail and a second slider, and the X-axis driving mechanism is a linear module.

[0014] As a further improvement of the above technical solution, a second bellows cover for protecting the second guide rail, the second slider and the X-axis driving mechanism is arranged on the Y-axis slide seat.

[0015] As a further improvement of the above technical solution, a dust suction housing is arranged between the A-axis turntable and the tailstock center. The dust suction housing is connected with a dust collector through a dust suction pipe, and a dust suction port facing the PCD tool is opened on the dust suction housing.

[0016] The beneficial effects of the present utility model: The clamping structure provided by the present utility model can compatibly install PCD tools with various structures on the A-axis turntable through a standard specification tool holder for laser processing, without designing special fixtures for each PCD tool, greatly reducing the design cost and the time for replacing fixtures, and improving the production efficiency. In addition, through the auxiliary support of the tailstock center, the problem of tail offset of the long-structure PCD tool during the processing is effectively solved, significantly improving the accuracy of the processing position and ensuring the accuracy of laser cutting. Description of the Drawings

[0017] Figure 1 This is a three-dimensional view of the clamping structure provided by the present utility model.

[0018] Figure 2 It is Figure 1 It is a partial enlarged view of area L.

[0019] Figure 3 It is a schematic view of the clamping structure provided with a first bellows cover and a second bellows cover.

[0020] Main component symbol description: 1 - bed body, 2 - Y-axis slide, 3 - A-axis turntable, 31 - pad table, 4 - center slide, 5 - tailstock center, 51 - backing plate, 52 - L-shaped block, 53 - tightening screw, 54 - fastening screw, 6 - tool shank, 71 - Y-axis drive mechanism, 72 - first guide rail, 73 - first slider, 74 - limit block, 81 - X-axis drive mechanism, 82 - second guide rail, 83 - second slider, 91 - dust suction housing, 92 - dust suction pipe, 93 - first bellows cover, 94 - second bellows cover. Specific embodiments

[0021] The present utility model provides a clamping structure for manufacturing PCD tools. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following further elaborates on the present utility model with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the protection scope of the present utility model.

[0022] Please refer to Figures 1 - 3 , the present utility model provides a clamping structure for manufacturing PCD tools. The clamping structure is a part of a numerical control machine tool. The clamping structure includes a Y-axis slide 2 slidably arranged along the Y-axis on the bed body 1, an A-axis turntable 3 fixed on the Y-axis slide 2, a center slide 4 slidably arranged along the X-axis on the Y-axis slide 2, and a tailstock center 5 arranged on the center slide 4. The tailstock center 5 is coaxially arranged with the A-axis turntable 3. One end of the PCD tool is clamped on the A-axis turntable 3 through a tool shank 6. The center slide 4 is driven by an X-axis drive mechanism 81 to move the tailstock center 5 closer to or farther away from the A-axis turntable 3. The Y-axis slide 2 is driven by a Y-axis drive mechanism 71.

[0023] Before processing, driven by the Y-axis drive mechanism 71, the clamping structure will move to the edge of the bed 1 to facilitate installation by the staff, solving the problem of the staff leaning into the machine tool for installation. The PCD tool will be pre-installed on the tool handle 6, and then the clamping end of the tool handle 6 is inserted into the clamping port of the A-axis turntable 3. The clamping system (such as the rivet system, the spring chuck system, the hydraulic clamping system) in the A-axis turntable 3 will tighten and fix the tool handle 6 to ensure that the PCD tool rotates safely and stably. It can be understood that the tool handle 6 in the utility model will adopt the BT50 tool handle 6, and the clamping port of the A-axis turntable 3 is the BT50 interface. BT50 is a standard international general fixture installation specification, which is widely used in various machining centers and CNC machine tools. The BT50 tool handle is designed with a taper. When used in conjunction with the BT50 interface of the A-axis turntable, it can achieve fast and accurate positioning and clamping, reducing the time required for tool replacement and improving production efficiency. The close fit between the BT50 toolholder and the clamping opening of the A-axis rotary table 3 ensures high-precision positioning of the tool, which is especially important for PCD tools that require high-precision machining and helps to improve the dimensional accuracy and surface quality of the machined parts.

[0024] If the length of the PCD tool is slightly shorter, the tailstock top 5 does not need to support the tail of the PCD tool, and the PCD tool can still rotate smoothly. If the length of the PCD tool is slightly longer, the tailstock top 5 on the top slide 4 is driven by the X-axis drive mechanism 81 to move toward the A-axis turntable 3, and the tailstock top 5 supports the tail of the PCD tool to assist in supporting the tail of the PCD tool, so as to more accurately realize the axial positioning of the PCD tool and ensure the accuracy of the position processed by the laser.

[0025] The clamping structure provided by the utility model can be compatible with various structures of PCD tools installed on the A-axis turntable 3 for laser processing through a standard specification tool holder 6, without the need to design a special fixture for each PCD tool, greatly reducing the design cost and the time for replacing the fixture, and improving production efficiency. In addition, through the auxiliary support of the tailstock top 5, the problem of tail deviation of the long structure PCD tool during processing is effectively solved, the accuracy of the processing position is significantly improved, and the accuracy of laser cutting is ensured.

[0026] Specifically, a pad 51 is provided between the top slide 4 and the tailstock top 5. Similarly, a pad 31 is provided between the A-axis turntable 3 and the Y-axis slide, thereby forming a suitable clamping processing height to ensure that the laser can be focused for processing.

[0027] To make the position of the top slide 4 adjustable, an L-shaped block 52 is fixedly provided on the top slide 4. On the L-shaped block 52, there are a pressing screw 53 and a tightening screw 54 facing one side of the backing plate 51. The pressing screw 53 is used to press against the side of the backing plate 51, and the tightening screw 54 is used to connect with the threaded hole on the side of the backing plate 51. The combined use of the pressing screw 53 and the tightening screw 54 enables the operator to finely adjust the position of the tailstock center 5, ensuring that the tailstock center 5 is coaxial with the A-axis turntable 3, which helps to further improve the accuracy of axial positioning and meet the requirements of high-precision machining.

[0028] The Y-axis slide 2 is slidably connected to the machine bed 1 through a first guide rail 72 and a first slider 73, and the Y-axis drive mechanism 71 is a linear motor. The stator of the linear motor is fixed on the machine bed 1, and the mover of the linear motor is drivingly connected to the bottom surface of the Y-axis slide. The linear motor has the ability to start and stop quickly, and can provide a high acceleration and dynamic response speed. This makes the clamping structure more efficient when quickly moving to the designated position, shortens the non-cutting time, and improves the overall machining efficiency. Since the linear motor does not require intermediate transmission components, its structure is simpler, reducing mechanical wear and failure points, lowering the complexity and cost of maintenance and servicing, and improving the reliability and service life of the equipment.

[0029] Preferably, a limit block 74 for restricting the sliding stroke of the Y-axis slide 2 is provided on the machine bed 1. The limit block 74 can prevent the Y-axis slide 2 from exceeding the predetermined sliding range, avoiding collision or derailment accidents caused by misoperation or control system failure, protecting the equipment from damage, and ensuring the personal safety of the operator.

[0030] Preferably, a first bellows cover 93 for protecting the first guide rail 72, the first slider 73, and the Y-axis drive mechanism 71 is provided on the machine bed 1. The first bellows cover 93 can effectively block impurities such as dust, metal chips, and coolant from entering the inside of the first guide rail 72, the first slider 73, and the Y-axis drive mechanism 71, preventing these components from being contaminated and maintaining the smoothness and accuracy of their operation.

[0031] In this embodiment, the top slide 4 is slidably connected to the Y-axis slide 2 through a second guide rail 82 and a second slider 83, and the X-axis drive mechanism 81 is a linear module. The driving slider on the linear module is fixedly connected to the bottom surface of the top slide 4. The linear module has a high integration degree, excellent linear motion accuracy and repeat positioning accuracy, and can ensure the precise movement of the tailstock center 5 in the X-axis direction, thereby realizing the precise support of the tail of the PCD tool and improving the positioning accuracy during the machining process.

[0032] Preferably, a second bellows cover 94 for protecting the second guide rail 82, the second slider 83, and the X-axis driving mechanism 81 is provided on the Y-axis slider 2. The second bellows cover 94 can effectively isolate pollutants such as dust, debris, and coolant, preventing them from entering the inside of the second guide rail 82, the second slider 83, and the X-axis driving mechanism 81, keeping these key components clean, and avoiding wear or malfunction caused by foreign object intrusion.

[0033] Preferably, as shown Figure 1 in the figure, a dust suction housing 91 is provided between the A-axis turntable 3 and the tailstock center 5. The dust suction housing 91 is connected to a vacuum cleaner through a dust suction pipe 92, and a dust suction port facing the PCD tool is opened on the dust suction housing 91. The dust suction housing 91 can directly capture and collect the dust and debris generated during the processing of the PCD tool, and convey them to the vacuum cleaner through the dust suction pipe 92, effectively preventing the dust from spreading into the working environment and keeping the working area clean.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" 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, an electrical connection, or a communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and the inventive concept of the present invention, and all such changes or substitutions should belong to the protection scope of the present invention.

Claims

1. A clamping structure for manufacturing PCD tools, characterized in that: It includes a Y-axis slide slidably arranged on a bed along the Y-axis, an A-axis turntable fixed on the Y-axis slide, a top slide slidably arranged on the Y-axis slide along the X-axis, and a tailstock top arranged on the top slide. The tailstock top is coaxially arranged with the A-axis turntable. One end of the PCD tool is clamped on the A-axis turntable through a tool holder. The top slide is driven by an X-axis driving mechanism to make the tailstock top approach or move away from the A-axis turntable. The Y-axis slide is driven by the Y-axis driving mechanism.

2. A clamping structure for manufacturing PCD tools according to claim 1, characterized in that: A pad is provided between the top slide and the top of the tail stock, an L-shaped block is fixed on the top slide, and the L-shaped block is provided with a tightening screw and a tightening screw facing one side of the pad, the tightening screw is used to press against the side of the pad, and the tightening screw is used to connect with the threaded hole on the side of the pad.

3. A clamping structure for manufacturing PCD tools according to claim 1, characterized in that: The Y-axis slide is slidably connected to the bed through a first guide rail and a first slider, and the Y-axis driving mechanism is driven by a linear motor.

4. A clamping structure for manufacturing PCD cutting tools according to claim 1, characterized in that: The bed is provided with a limit block for limiting the sliding stroke of the Y-axis slide.

5. The clamping structure for manufacturing PCD cutting tools according to claim 3, characterized in that: The bed is provided with a first accordion cover for protecting the first guide rail, the first slider and the Y-axis driving mechanism.

6. A clamping structure for manufacturing PCD cutting tools according to claim 1, characterized in that: The top slide is slidably connected to the Y-axis slide via a second guide rail and a second slider, and the X-axis drive mechanism is a linear module.

7. A clamping structure for manufacturing PCD cutting tools according to claim 6, characterized in that: The Y-axis slide is provided with a second accordion cover for protecting the second guide rail, the second slider and the X-axis driving mechanism.

8. The clamping structure for manufacturing PCD cutting tools according to claim 1, characterized in that: A dust suction shell is arranged between the A-axis turntable and the tailstock top, the dust suction shell is connected with the dust collector through a dust suction pipe, and a dust suction port facing the PCD tool is opened on the dust suction shell.

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