A constant depth of cut engraving tool

Abstract

This utility model discloses a cutter head with constant engraving depth, including a spindle rod. A circular groove is provided at the bottom of the spindle rod, and a powerful spring is installed inside the groove. One end of the powerful spring is connected to the spindle rod, and the other end is connected to a connecting rod. The bottom end of the connecting rod is connected to the cutter head body, and a universal ball bearing is provided on the outside of the connecting rod. This utility model, by setting a powerful spring in the circular groove at the bottom of the spindle rod and allowing the connecting rod to slide within the groove, enables the cutter head body to automatically float in the vertical direction, conforming to the surface undulations of the workpiece in real time. Even when facing PVC sheets with thickness tolerances or local warping, it can maintain a constant downward pressure and engraving depth, significantly reducing uneven groove depth. Furthermore, through a multi-bar coupling mechanism between the spindle rod and the connecting rod, the connecting rod is effectively constrained to only perform vertical translation, preventing rotation or tilting during floating, thus ensuring that the cutter head is always perpendicular to the workpiece surface.

Description

Technical Field

[0001] This utility model relates to the field of PVC stone plastic wall panel carving technology, specifically, to a cutting head with a constant carving depth. Background Technology

[0002] With the widespread application of PVC extruded sheets in home decoration, they are gradually replacing traditional ceramic tiles or wall tiles. To achieve a high degree of simulation, existing processes typically involve grooved treatment on the surface of the PVC sheet, followed by the application of UV coatings or wear-resistant layers to simulate the texture and gloss of ceramic tiles.

[0003] However, in actual processing, due to factors such as thickness tolerance, surface flatness fluctuations, and equipment vibration inherent in PVC sheets, traditional rigid engraving tips struggle to maintain a constant cutting depth, resulting in inconsistent groove depths. This uneven groove depth directly leads to defects in subsequent coating processes: on the one hand, shallow grooves result in insufficient coating coverage, affecting the visual simulation effect; on the other hand, excessively deep grooves or abrupt changes in depth can trap air during coating, forming surface defects such as bubbles and pinholes, severely reducing product yield and aesthetics.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a cutter head with constant engraving depth to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A cutter head with a constant engraving depth includes a spindle rod, a circular groove at the bottom of the spindle rod, a powerful spring inside the groove, one end of the powerful spring being connected to the spindle rod and the other end being connected to a connecting rod, the bottom end of the connecting rod being connected to the cutter head body, and a universal ball bearing being provided on the outside of the connecting rod.

[0008] Furthermore, in order to enable the connecting rod to float only in the up and down direction, a multi-bar coupling mechanism is provided between the main shaft and the connecting rod. The multi-bar coupling mechanism includes a first fixed plate fixed on the main shaft, with first coupling rods hinged to both sides of the first fixed plate. One end of the first coupling rod is hinged to a second coupling rod, and one end of the second coupling rod is hinged to a second fixed plate.

[0009] Furthermore, the second fixing plate is connected to the connecting rod.

[0010] Furthermore, in order to adjust the position of the universal ball bearing and thus adjust the engraving depth of the cutter head, the top of the universal ball bearing is connected to a moving ring, which is sleeved on the outside of the connecting rod. The second fixed plate has a mounting hole, and a screw rod is connected through the mounting hole. One end of the screw rod is fixedly connected to the moving ring, and a nut is threaded onto the screw rod. A positioning ring is threaded onto the screw rod, and one end of the positioning ring abuts against the second fixed plate.

[0011] Furthermore, a friction washer is provided between the nut and the second fixing plate.

[0012] Furthermore, friction pads are fitted onto the outside of the screw.

[0013] Furthermore, one end of the connecting rod is slidably connected inside the circular groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By setting a strong spring in the circular groove at the bottom of the spindle and making the connecting rod slide in the groove, the cutter head can automatically float in the vertical direction and conform to the surface undulations of the workpiece in real time. Even when facing PVC sheets with thickness tolerances or local warping, it can still maintain a constant downward pressure and engraving depth, significantly reducing the unevenness of groove depth. Furthermore, by setting a multi-bar coupling mechanism between the spindle and the connecting rod, the connecting rod is effectively constrained to only move up and down, preventing it from rotating or tilting during the floating process, thereby ensuring that the cutter head is always perpendicular to the workpiece surface.

[0016] (2) By setting adjustable height universal rollers on the outside of the connecting rod, the user can rotate the nut to adjust the axial position of the moving ring on the connecting rod, thereby changing the reference height of the universal ball and realizing stepless setting of the engraving depth; in conjunction with the positioning ring abutting against the lower surface of the second fixed plate to form a lower stop, effectively preventing the screw from moving when the cutter head is subjected to an upward impact force; at the same time, the friction pad between the nut and the second fixed plate further enhances the locking force, ensuring that the set depth does not drift under high-speed vibration conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0018] Figure 1 This is a front view of a cutter head with a constant engraving depth according to an embodiment of the present utility model;

[0019] Figure 2This is a cross-sectional view of a cutter head with a constant carving depth according to an embodiment of the present utility model;

[0020] Figure 3 This is a side view of a cutter head with a constant engraving depth according to an embodiment of the present utility model;

[0021] Figure 4 This is a diagram of a cutter head structure with a constant engraving depth according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Spindle rod; 2. Circular groove; 3. High-strength spring; 4. Connecting rod; 5. Cutter head body; 6. Universal ball bearing; 7. Multi-bar coupling mechanism; 8. First fixed plate; 9. First coupling rod; 10. Second coupling rod; 11. Second fixed plate; 12. Moving ring; 13. Mounting hole; 14. Screw; 15. Nut; 16. Positioning ring; 17. Friction pad. Detailed Implementation

[0024] 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.

[0025] According to an embodiment of the present invention, a cutting tool with a constant engraving depth is provided.

[0026] Example 1

[0027] like Figures 1-4 As shown, the constant engraving depth cutter head according to an embodiment of the present invention includes a spindle 1, a circular groove 2 at the bottom end of the spindle 1, a strong spring 3 inside the circular groove 2, one end of the strong spring 3 being connected to the spindle 1 and the other end being connected to a connecting rod 4, the upper part of the connecting rod 4 being slidably embedded and reciprocating axially inside the circular groove 2, the bottom end of the connecting rod 4 being connected to the cutter head body 5, the cutter head body 5 being used to perform the actual engraving operation.

[0028] A multi-bar coupling mechanism 7 is provided between the main spindle 1 and the connecting rod 4. The multi-bar coupling mechanism 7 includes a first fixed plate 8 fixed on the main spindle 1. First coupling rods 9 are hinged to both sides of the first fixed plate 8. One end of the first coupling rod 9 is hinged to the second coupling rod 10. One end of the second coupling rod 10 is hinged to the second fixed plate 11. The second fixed plate 11 is connected to the connecting rod 4. This structure ensures that the connecting rod 4 can only move in the vertical direction under the strong force of the spring, and always maintains a posture perpendicular to the workpiece surface, which significantly improves the neatness and depth consistency of the groove edge.

[0029] like Figures 1-4 As shown, a universal ball bearing 6 is provided on the outer side of the connecting rod 4. The universal ball bearing 6 includes a spherical ball and its corresponding mounting seat. The mounting seat has a precision-machined groove inside, allowing the ball to rotate freely within it and allowing tilting movement within a certain angle range, thereby achieving omnidirectional rolling contact. By setting the universal ball bearing 6, scratches on the product surface can be effectively avoided, while also satisfying any engraving direction. The top of the universal ball bearing 6 is connected to the moving ring 12, which is sleeved on the outer side of the connecting rod 4. The second fixing plate 11 is provided with mounting holes 13. 3. A screw 14 is internally connected, and one end of the screw 14 is fixedly connected to the moving ring 12. The moving ring 12 can move up and down with the screw 14. Its position directly determines the maximum downward stroke of the cutter head body 5 relative to the workpiece surface, i.e., the engraving depth. A nut 15 is threadedly connected to the screw 14. A friction pad 17 is provided between the nut 15 and the second fixed plate 11. The friction pad 17 is sleeved on the outside of the screw 14. Under the pre-tightening force of the nut 15, it can generate a large static friction resistance, further enhancing the locking reliability after adjustment and preventing the nut 15 from loosening due to vibration during equipment operation.

[0030] A positioning ring 16 is threaded onto the screw 14. The positioning ring 16 is screwed onto the screw 14 and its upper end face is tightly pressed against the lower surface of the second fixing plate 11 to form a reliable mechanical stop, which effectively prevents the screw 14 from moving upward as a whole due to the upward reaction force on the cutting head during the engraving process.

[0031] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0032] In summary, with the help of the above-mentioned technical solution of this utility model, when using this cutter head, by installing this cutter head on the engraving machine, according to the thickness of the plate and the expected groove depth, firstly, by manually rotating the nut 15 on the screw 14, the position of the moving ring 12 is precisely adjusted, and then the positioning ring 16 is tightened so that its upper end face is tightly attached to the lower surface of the second fixing plate 11, forming a solid mechanical stop, ensuring that the cutter head will not be displaced due to the upward reaction force during the engraving process.

[0033] When the cutter head begins to engrave the workpiece, due to the presence of the powerful spring 3 in the bottom groove 2 of the spindle 1, the connecting rod 4 and the cutter head body 5 below it can automatically float up and down according to the actual height of the workpiece surface. If there are slight undulations or thickness differences on the workpiece surface, the powerful spring 3 will push the connecting rod 4 to extend or retract appropriately to maintain a constant contact pressure between the cutter head body 5 and the workpiece surface. At the same time, the multi-bar coupling mechanism 7 ensures that the connecting rod 4 maintains a vertical posture throughout the floating process, avoiding uneven grooves or irregular edges caused by skew. Furthermore, the universal ball bearing 6 on the outside of the connecting rod 4 rotates with the connecting rod 4. The lower end face of the universal ball bearing 6 forms a dynamic reference surface, which is in real-time contact with the surface of the board, limiting the maximum downward stroke of the cutter head body 5 and ensuring that the engraving depth remains constant.

[0034] 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 constant depth of cut tool tip characterized by, Includes a main spindle (1), a circular groove (2) at the bottom of the main spindle (1), a powerful spring (3) inside the circular groove (2), one end of the powerful spring (3) is connected to the main spindle (1), and the other end is connected to the connecting rod (4). The bottom end of the connecting rod (4) is connected to the cutter head body (5), and a universal ball bearing (6) is provided on the outside of the connecting rod (4).

2. A constant depth of cut tool tip according to claim 1 wherein, A multi-bar coupling mechanism (7) is provided between the main shaft (1) and the connecting rod (4). The multi-bar coupling mechanism (7) includes a first fixed plate (8) fixed on the main shaft (1). A first coupling rod (9) is hinged on both sides of the first fixed plate (8). One end of the first coupling rod (9) is hinged to the second coupling rod (10), and one end of the second coupling rod (10) is hinged to the second fixed plate (11).

3. The cutting tool with a constant engraving depth according to claim 2, characterized in that, The second fixing plate (11) is connected to the connecting rod (4).

4. The constant-depth engraving tool tip of claim 1, wherein, The top of the universal ball bearing (6) is connected to the moving ring (12). The moving ring (12) is sleeved on the outside of the connecting rod (4). The second fixing plate (11) is provided with a mounting hole (13). A screw (14) is connected through the mounting hole (13). One end of the screw (14) is fixedly connected to the moving ring (12). A nut (15) is threaded on the screw (14). A positioning ring (16) is threaded on the screw (14). One end of the positioning ring (16) abuts against the second fixing plate (11).

5. A constant depth of cut tool tip according to claim 4, wherein, A friction washer (17) is provided between the nut (15) and the second fixing plate (11).

6. The constant-depth engraving tool tip of claim 1, wherein, The friction pad (17) is fitted on the outside of the screw (14).

7. A cutting tool with a constant engraving depth according to claim 1, characterized in that, One end of the connecting rod (4) is slidably connected to the inside of the circular groove (2).

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