A PCBN insert polishing device

Abstract

The utility model discloses a kind of PCBN blade polishing devices, it is related to polishing device technical field, solve the problem that blade and grinding wheel are difficult to realize accurate positioning cooperation in prior art.The device includes lathe body, further includes: vertical adjusting mechanism, the mobile end of vertical adjusting mechanism is provided with polishing wheel assembly.Linear movement assembly, it is set on lathe body, the movable end of linear movement assembly is provided with moving platform.Float support mechanism, it is set on moving platform, the floating end of float support mechanism is connected with mounting seat, so that mounting seat can float in vertical direction, mounting seat is used to install PCBN blade.Slippage guide structure, it is set between lathe body and the floating end of float support mechanism, for limiting the floating range of mounting seat in the floating range during moving under the driving of linear movement assembly, so that blade avoids with polishing wheel assembly in moving process, again can guarantee that float support mechanism can realize the floating support ability to blade after moving in position.

Description

Technical Field

[0001] This utility model relates to the field of polishing equipment technology, and in particular to a PCBN blade polishing device. Background Technology

[0002] PCBN cutting tools, with their superior high hardness, high wear resistance, high chemical inertness, and thermal stability, have become an ideal choice for precision machining of high-hardness materials (hardness exceeding 50 HRC). Polishing PCBN tools reduces friction and adhesion between chips and the rake face, extending tool life; it also improves the flatness and sharpness of the cutting edge, enhancing machining accuracy. Currently, most common PCBN insert polishing equipment uses a conveyor belt structure, where the inserts are fixed by a clamping mechanism and transported to the grinding wheel for polishing.

[0003] For example, Chinese utility model patents CN216967377U and CN219444465U disclose a PCBN tool surface polishing device. Both of these prior art technologies use a conveyor belt to transport the clamped PCBN blades. During transport, a rotating grinding wheel polishes the blade surface. When the blade reaches the mating position with the grinding wheel, the surface to be polished must be on the same plane as the grinding wheel. It is necessary to maintain a tight, non-overlapping contact between the blade and the grinding wheel to avoid collisions or poor contact leading to poor polishing quality. The polishing devices in these prior art technologies all use a rigid fit. Due to the rigid clamping and hard contact method, the relative position between the blade and the grinding wheel is difficult to control precisely, easily leading to poor or excessive contact, resulting in unstable polishing quality. Furthermore, existing devices are difficult to adapt to PCBN blades of different thicknesses or shapes, are inconvenient to adjust, and lack versatility. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a PCBN blade polishing device, which solves the problem that it is difficult to achieve precise positioning and matching between the blade and the grinding wheel in the prior art.

[0005] The technical solution of this utility model is implemented as follows: A PCBN blade polishing device includes a machine tool body and further includes: a vertical adjustment mechanism disposed on the machine tool body, the moving end of which is provided with a polishing wheel assembly, the vertical adjustment mechanism being used to adjust the vertical position of the polishing wheel assembly; a linear motion assembly disposed on the machine tool body, the moving end of which is provided with a moving stage, the linear motion assembly being able to change the position of the moving stage to adjust the correspondence between the moving stage and the polishing wheel assembly; a floating support mechanism disposed on the moving stage, the floating end of the floating support mechanism being connected to a mounting base, allowing the mounting base to float vertically, the mounting base being used to mount PCBN blades; and a sliding guide structure disposed between the machine tool body and the floating end of the floating support mechanism, used to limit the floating range of the mounting base during movement driven by the linear motion assembly.

[0006] Preferably, the floating support mechanism includes a support column fixedly mounted on the moving platform, a floating frame slidably mounted on the support column, the upper end of the floating frame being fixedly connected to the mounting base, and a spring being provided between the floating frame and the moving platform.

[0007] Preferably, the sliding guide structure includes a guide block fixedly mounted on the machine tool body, a sliding groove on the guide block, and a guide post on the side wall of the floating frame that mates with the sliding groove. An arc-shaped guide surface is provided within the sliding groove to guide the guide post downwards, and a first horizontal guide surface and a second horizontal guide surface are respectively provided at both ends of the arc-shaped guide surface. When the guide post contacts the first horizontal guide surface, the spring is in a compressed state.

[0008] Preferably, the linear motion assembly includes a linear screw module fixedly mounted on the machine tool body, and the moving end of the linear screw module is bolted to the moving table.

[0009] Preferably, the vertical adjustment mechanism includes a column fixedly mounted on the machine tool body, a support seat slidably mounted on the column, a polishing wheel assembly mounted on the support seat, and a rotatable lead screw I on the machine tool body, which is in transmission engagement with a lead screw nut fixedly mounted on the support seat. The polishing wheel assembly includes a rotating shaft rotatably mounted on the support seat, with a grinding wheel fixedly mounted at one end of the shaft and a servo motor fixedly mounted on the support seat at the other end.

[0010] Preferably, the mounting base includes a base body fixedly mounted on a floating frame. A support block is bolted or inserted into the base body. The support block has several receiving slots for mounting PCBN blades. The depth of the receiving slots is less than the thickness of the PCBN blade. The PCBN blade is bolted into the receiving slots. The support block has a ring structure.

[0011] The beneficial effects of this utility model are: By incorporating a floating support mechanism, the mounting base and its PCBN blades can float vertically, ensuring appropriate contact pressure between the blades and the polishing wheel assembly during polishing, significantly improving the uniformity and consistency of blade polishing. The sliding guide structure effectively limits the floating range of the floating frame, preventing the blades from colliding with the polishing wheel assembly during movement, while ensuring that the floating support mechanism can provide floating support for the blades after they have moved into position, maintaining precise positioning and fit between the blades and the polishing wheel assembly.

[0012] The vertical adjustment mechanism can adjust the vertical position of the grinding wheel assembly before and after processing to achieve the best matching position with the blade to be polished. At the same time, it can also cooperate with the floating support mechanism to adapt to the polishing needs of blades of different specifications.

[0013] This device features a simple overall structure and convenient operation. Through uniform and precise polishing, it effectively reduces the surface roughness of the blades, improves the cutting edge quality, and thus extends the service life of PCBN tools, reducing processing costs. This device not only effectively solves the technical problems existing in current PCBN blade polishing equipment, but also has significant advantages in structural optimization, functional integration, and automation adaptation, demonstrating promising prospects for widespread application. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from one perspective; Figure 2 This is a schematic diagram of the floating support mechanism of this utility model; Figure 3 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 4 This is a schematic diagram of the sliding guide structure of this utility model; In the figure: 1: Machine tool body, 2: Vertical adjustment mechanism, 3: Polishing wheel assembly, 4: Linear movement assembly, 5: Moving table, 6: Floating support mechanism, 7: Mounting seat, 8: PCBN cutting tool, 9: Sliding guide structure, 21: Column, 22: Support seat, 23: Lead screw I, 31: Rotary shaft, 32: Grinding wheel, 33: Servo motor, 61: Support column, 62: Floating frame, 63: Spring, 71: Seat, 72: Bearing block, 73: Receiving groove, 91: Guide block, 92: Slide groove, 93: Guide column, 94: Arc-shaped guide surface, 95: First horizontal guide surface, 96: Second horizontal guide surface. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 , 3 As shown in Embodiment 1, a PCBN blade polishing device includes a machine tool body 1, and further includes: a vertical adjustment mechanism 2, disposed on the machine tool body 1, with a polishing wheel assembly 3 disposed at the moving end of the vertical adjustment mechanism 2, which can be used to adjust the vertical position of the polishing wheel assembly 3; a linear motion assembly 4, disposed on the machine tool body 1, with a moving stage 5 disposed at the moving end of the linear motion assembly 4, which can change the position of the moving stage 5 to adjust the correspondence between the moving stage 5 and the polishing wheel assembly 3; a floating support mechanism 6, disposed on the moving stage 5, with the floating end of the floating support mechanism 6 connected to a mounting base 7, allowing the mounting base 7 to float vertically, and the mounting base 7 is used to mount PCBN blades 8; and a sliding guide structure 9, disposed between the machine tool body 1 and the floating end of the floating support mechanism 6, used to limit the floating range of the mounting base 7 during movement driven by the linear motion assembly 4.

[0018] In practical use, this embodiment adjusts the vertical adjustment mechanism to lower the polishing wheel assembly to the polishing position. Then, the PCBN blade is installed on the mounting base. After installation, the linear motion assembly operates, driving the floating support mechanism, mounting base, and blade to move synchronously. The floating range of the mounting base during movement is limited by the sliding guide structure, preventing interference or collision before reaching the engagement position with the polishing wheel assembly. Upon reaching the engagement position, the floating end of the floating support mechanism is released, restoring the floating range. Supported by the floating support mechanism, the mounting base and the PCBN blade on it can float vertically, ensuring appropriate contact pressure between the blade and the polishing wheel assembly during polishing, significantly improving the uniformity and consistency of blade polishing. The sliding guide structure effectively limits the floating range of the floating frame, preventing the blade from colliding with the polishing wheel assembly during movement and ensuring that the floating support mechanism can provide floating support for the blade after it has moved into position. The vertical adjustment mechanism can adjust the vertical position of the grinding wheel assembly before and after processing to achieve the best matching position with the blade to be polished. At the same time, it can also cooperate with the floating support mechanism to adapt to the polishing needs of blades of different specifications.

[0019] Specifically, in this embodiment, as an optional solution, the linear motion assembly 4 includes a linear screw module fixedly mounted on the machine tool body 1. The linear screw module includes a slide rail fixedly mounted on the machine tool body and a rotating screw II. The screw II is arranged parallel to the slide rail. A screw nut and a slider are fixedly mounted at the bottom of the moving table 5. The slider is driven to slide horizontally along the slide rail through the transmission cooperation between the screw nut and the screw. As an optional solution, the input end of the linear screw module is connected to a drive motor fixedly mounted on the machine tool body 1, and the drive motor drives the tap II to rotate. Alternatively, a handle is fixedly mounted at the end of the screw II, and the screw II is rotated manually by turning the handle.

[0020] Example 2, based on Example 1, such as Figure 2 As shown, the floating support mechanism 6 includes a support column 61 fixedly mounted on the moving platform 5, a floating frame 62 slidably mounted on the support column 61, the upper end of the floating frame 62 being fixedly connected to the mounting base 7, and a spring 63 being provided between the floating frame 62 and the moving platform 5. Additionally, a stop cap is provided at the upper end of the support column 61 to prevent the upper end of the floating frame 62 from detaching. Utilizing the elasticity of the spring, the floating frame floats vertically, allowing the mounting base to drive the blade to adhere to the surface of the polishing wheel with a certain pressure during the polishing process, ensuring a stable and uniform polishing process. In this embodiment, four support columns are provided, and the floating frame has four through holes. Linear bearings are fixedly mounted in the through holes and slide in contact with the support columns through the linear bearings. Springs are sleeved on the support columns, with both ends engaging with the moving platform and the floating frame respectively, thereby providing floating support for the floating frame and ensuring its floating capability.

[0021] In addition, such as Figure 4 As shown, the sliding guide structure 9 includes a guide block 91 fixedly mounted on the machine tool body 1. A groove 92 is provided on the guide block 91, and a guide post 93 that cooperates with the groove 92 is provided on the side wall of the floating frame 62. Specifically, in this embodiment, the width of the groove in the vertical direction is greater than the diameter of the roller. An arc-shaped guide surface 94 is provided within the groove 92 to guide the guide post 93 downwards. A first horizontal guide surface 95 and a second horizontal guide surface 96 are respectively provided at both ends of the arc-shaped guide surface 94. The arc-shaped guide surface corresponds to the outer edge area of ​​the polishing working surface of the polishing wheel assembly. When the guide post moves to the contact area with the arc-shaped guide surface, the floating frame is pressed down, making it lower than the polishing surface of the polishing wheel assembly, thus avoiding interference and collision. After passing the outer edge area of ​​the polishing working surface of the polishing wheel assembly and entering the polishing working surface area, the guide post enters the area corresponding to the first horizontal guide surface. Under the action of the spring, the blade on the mounting seat contacts the polishing working surface of the polishing wheel assembly. After the polishing wheel assembly is turned on, the blade in contact with the polishing working surface is polished.

[0022] In this embodiment, when the guide post 93 contacts the first horizontal guide surface 95, the spring 63 is still in a compressed state, so that the spring is always in a compressed state, maintaining basic pressure and meeting the polishing requirements.

[0023] In addition, to further reduce friction during sliding, rollers are fitted on the guide post to reduce resistance when sliding in the groove.

[0024] In Example 3, based on Example 2, the vertical adjustment mechanism 2 includes a column 21 fixedly mounted on the machine tool body 1, a support seat 22 slidably mounted on the column 21, a polishing wheel assembly 3 mounted on the support seat 22, and a rotatable lead screw I 23 mounted on the machine tool body 1. The lead screw I 23 is in transmission engagement with a lead screw nut fixedly mounted on the support seat 22. By rotating the lead screw I, the vertical position of the polishing wheel assembly can be adjusted in cooperation with the lead screw nut. Alternatively, when rotating the lead screw I, adjustment can be made using a handle fixedly mounted at the end of the lead screw I, or a motor can be fixedly mounted on the machine tool body to drive the rotation of the lead screw I.

[0025] Additionally, the polishing wheel assembly 3 includes a rotating shaft rotatably mounted on a support base 22. A grinding wheel 31 is fixedly mounted at one end of the shaft, and the other end is connected to a servo motor 32 fixedly mounted on the support base 22. In this embodiment, the rotating shaft is vertically oriented, and the grinding wheel is fixedly mounted at the lower end of the shaft, using the lower surface of the grinding wheel to form a polishing surface. The upper end of the rotating shaft is connected to the output shaft of the servo motor via a gear transmission pair.

[0026] In Example 4, based on Example 3, the mounting base 7 includes a base body 71 fixedly mounted on the floating frame 62. A support block 72 is bolted or inserted onto the base body 71. The support block 72 has several receiving slots 73 for mounting PCBN blades 8. In this example, the mounting base 7 is equipped with replaceable support blocks, allowing for quick replacement according to the size and shape of different PCBN blades, meeting diverse production needs and improving equipment utilization.

[0027] Specifically, in this embodiment, the depth of the receiving groove 73 is less than the thickness of the PCBN blade 8, the PCBN blade 8 is bolted to the receiving groove 73, and the bearing block 72 has a ring structure.

[0028] This device features a simple overall structure and convenient operation. Through uniform and precise polishing, it effectively reduces the surface roughness of the blades, improves the cutting edge quality, and thus extends the service life of PCBN tools, reducing processing costs. This device not only effectively solves the technical problems existing in current PCBN blade polishing equipment, but also has significant advantages in structural optimization, functional integration, and automation adaptation, demonstrating promising prospects for widespread application.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PCBN blade polishing device, comprising a machine tool body (1), characterized in that: Also includes: A vertical adjustment mechanism (2) is provided on the machine tool body (1). The moving end of the vertical adjustment mechanism (2) is provided with a polishing wheel assembly (3). The vertical adjustment mechanism (2) can be used to adjust the vertical position of the polishing wheel assembly (3). A linear motion assembly (4) is mounted on the machine tool body (1). A moving table (5) is provided at the movable end of the linear motion assembly (4). The linear motion assembly (4) can change the position of the moving table (5) to adjust the correspondence between the moving table (5) and the polishing wheel assembly (3). A floating support mechanism (6) is set on a moving platform (5). The floating end of the floating support mechanism (6) is connected to the mounting base (7), so that the mounting base (7) can float in the vertical direction. The mounting base (7) is used to install PCBN blades (8). The sliding guide structure (9) is set between the floating end of the machine tool body (1) and the floating support mechanism (6) to limit the floating range of the mounting base (7) during the movement driven by the linear motion assembly (4); The floating support mechanism (6) includes a support column (61) fixedly mounted on the moving platform (5), a floating frame (62) slidably mounted on the support column (61), the upper end of the floating frame (62) being fixedly connected to the mounting base (7), and a spring (63) being provided between the floating frame (62) and the moving platform (5). The sliding guide structure (9) includes a guide block (91) fixedly installed on the machine tool body (1), a slide groove (92) is provided on the guide block (91), and a guide post (93) that cooperates with the slide groove (92) is provided on the side wall of the floating frame (62).

2. The PCBN blade polishing apparatus according to claim 1, characterized in that: The groove (92) is provided with an arc-shaped guide surface (94) for guiding the guide post (93) to move downward. The arc-shaped guide surface (94) is provided with a first horizontal guide surface (95) and a second horizontal guide surface (96) at both ends.

3. The PCBN blade polishing apparatus according to claim 2, characterized in that: When the guide post (93) contacts the first horizontal guide surface (95), the spring (63) is in a compressed state.

4. The PCBN blade polishing apparatus according to any one of claims 1 to 3, characterized in that: The linear motion assembly (4) includes a linear screw module fixedly mounted on the machine tool body (1), and the moving end of the linear screw module is bolted to the moving table (5).

5. The PCBN blade polishing apparatus according to claim 1, characterized in that: The vertical adjustment mechanism (2) includes a column (21) fixedly mounted on the machine tool body (1), a support seat (22) slidably mounted on the column (21), a polishing wheel assembly (3) mounted on the support seat (22), and a rotatable lead screw I (23) mounted on the machine tool body (1). The lead screw I (23) is in transmission cooperation with the lead screw nut fixedly mounted on the support seat (22).

6. The PCBN blade polishing apparatus according to claim 5, characterized in that: The polishing wheel assembly (3) includes a rotating shaft rotatably mounted on a support base (22), with a grinding wheel (31) fixedly mounted at one end of the shaft and the other end connected to a servo motor (32) fixedly mounted on the support base (22).

7. The PCBN blade polishing apparatus according to claim 2 or 3, characterized in that: The mounting base (7) includes a base (71) fixedly mounted on a floating frame (62). A bearing block (72) is bolted or inserted onto the base (71). Several receiving slots (73) are provided on the bearing block (72). The receiving slots (73) are used to install PCBN blades (8).

8. The PCBN blade polishing apparatus according to claim 7, characterized in that: The depth of the receiving groove (73) is less than the thickness of the PCBN blade (8). The PCBN blade (8) is bolted into the receiving groove (73). The bearing block (72) has an annular structure.

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