A cemented carbide square hole roller ring laser engraving device

Abstract

This invention discloses a laser engraving device for a square-hole roller ring made of cemented carbide, relating to the field of steel rolling technology. The outer surface of the roller ring to be engraved has a circumferentially extending roller ring groove with a square cross-section. The device includes a three-axis drive mechanism, a rotary table mounted at the end of the three-axis drive mechanism, a mandrel mounted on the rotary table, a laser mounted above the roller ring to be engraved, and a control mechanism for controlling the operation of the device. The roller ring to be engraved is sleeved and fixed on the mandrel, with the mandrel's axial direction coinciding with the rotary table's rotation axis. The control mechanism is signal-connected to the three-axis drive mechanism, the rotary table, and the laser. This device achieves uniform depth engraving of square roller ring grooves on high-hardness cemented carbide roller rings, exhibits a high degree of automation, and improves the accuracy and efficiency of roller ring engraving.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling technology, specifically to a laser engraving device for a carbide square hole roller ring. Background Technology

[0002] In conventional ribbed steel bar production, the roller rings on the rolling mill are the key molds for directly forming the ribs and characters on the surface of the steel bar. The shape and pattern of the roller ring grooves determine the external characteristics of the steel bar. Therefore, it is necessary to carve the inside of the roller ring grooves.

[0003] Existing engraving equipment is typically designed for roller rings used to roll round steel bars. It processes ribs and lettering by moving the engraving tool around an axis to meet the rolling requirements of round steel bars. However, for roller rings with square cross-sections, existing engraving equipment based on oscillation processing struggles to achieve consistent engraving depth on flat surfaces without arcs. Furthermore, with the application of high-hardness cemented carbide roller rings, traditional mechanical engraving methods experience high processing resistance, easily causing tool wear and even chipping, making it impossible to efficiently and accurately produce clear lettering of uniform depth on square groove bottoms. Utility Model Content

[0004] To address the problems in the existing technology, this utility model proposes a laser engraving device for a carbide square hole roller ring.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A laser engraving device for a carbide square-hole roller ring includes a circumferentially extending roller ring groove on the outer circular surface of the roller ring to be engraved. The roller ring groove has a square cross-section. The device includes a three-axis drive mechanism, a rotary table mounted at the end of the three-axis drive mechanism, a mandrel mounted on the rotary table, a laser mounted above the roller ring to be engraved, and a control mechanism for controlling the operation of the device. The roller ring to be engraved is sleeved and fixed on the mandrel, and the axial direction of the mandrel coincides with the rotation axis of the rotary table. The control mechanism is signal-connected to the three-axis drive mechanism, the rotary table, and the laser to realize the automated control of the device.

[0006] Preferably, the mandrel has a taper of 0.5 to 1.5 degrees, presenting a structure that is wider on the outside and narrower on the inside. The taper structure is used to reliably fix the roller ring and prevent the roller ring from falling off or displacing.

[0007] Preferably, the laser head of the laser is vertically downward, and the three-axis drive mechanism is used to adjust the position of the laser so that the laser head is aligned with the bottom of the roller ring groove, ensuring that the laser focus falls precisely on the processing plane of the square groove bottom.

[0008] Preferably, the hardness of the roller ring to be engraved is HRA88 to 90; the laser output power of the laser remains stable during the engraving process to ensure uniform engraving depth. The laser output power is between 40 and 60W. Laser processing overcomes the mechanical processing difficulties caused by high-hardness materials. At the same time, this power range avoids the formation of micro-cracks on the engraved surface of the roller ring due to excessive laser power.

[0009] Preferably, the device further includes a distance sensor for obtaining the outer diameter of the roller ring. The distance sensor is located on one side of the outer circular surface of the roller ring and is spaced apart from it. The control mechanism is signal-connected to the distance sensor and can automatically obtain the outer diameter of the roller ring and automatically calculate relevant processing parameters, and automatically adapt to roller rings of different sizes.

[0010] Preferably, the laser is fixed by a laser bracket, which includes a vertically arranged support column, a distance sensor bracket is mounted on the support column, and a distance sensor is fixed on the distance sensor bracket. The probe of the distance sensor is vertically aligned with the outer surface of the roller ring to achieve non-contact and accurate measurement of the outer diameter of the roller ring.

[0011] Preferably, the sensor bracket and the support column form a sliding fit, and the sensor bracket is fixed at any height position of the support column by friction, which facilitates the adjustment of the sensor's measurement position.

[0012] Preferably, the control mechanism includes a screen, buttons, and a control chip, which facilitates user input of parameters and enables automated operation.

[0013] The beneficial effects of this solution are as follows: precise positioning of the square hole roller ring groove is achieved through the cooperation of the three-axis drive mechanism and the rotary table; non-contact processing using stable laser energy enables deep engraving of high-hardness carbide roller rings; the introduction of a distance sensor enables automatic detection of the outer diameter of the roller ring, allowing the equipment to adapt to the processing requirements of roller rings of different specifications; the entire equipment has a high degree of automation, improving the accuracy and efficiency of roller ring engraving. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a carbide square hole roller ring laser engraving device according to the present invention.

[0015] Figure label: 1-Three-axis drive mechanism, 2-Turntable, 3-Mandrel, 4-Laser, 5-Control mechanism, 6-Laser bracket, 7-Turntable base, 8-Distance sensor. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] refer to Figure 1 A carbide square-hole roller ring laser engraving device includes a three-axis drive mechanism 1, a rotary table 2, a mandrel 3, a laser 4, a distance sensor 8, and a control mechanism 5. The rotary table 2 is mounted on the end of the three-axis drive mechanism 1 via a rotary table base 7. The mandrel 3 is mounted on the rotary table 2, and the roller ring to be engraved is fitted onto the mandrel 3. The outer surface of the roller ring to be engraved has a circumferentially extending roller ring groove with a square cross-section. The roller ring hardness is HRA88~90. The laser head of the laser 4 is vertically downward, aligned with the bottom of the roller ring groove, and performs laser engraving along a pre-set trajectory in the control mechanism 5. The laser output energy remains stable throughout the engraving process to achieve a uniform and accurate engraving depth and a smooth surface. The laser 4 is fixed by a laser bracket 6. The output power of the laser 4 is 40~60W, and the same character can be engraved repeatedly to achieve the desired depth.

[0018] The three-axis drive mechanism 1 includes an X-axis drive module, a Y-axis drive module, and a Z-axis drive module, each capable of driving its end structure to move freely in the X, Y, and Z axes via its own servo motor. The X, Y, and Z axes are perpendicular to each other, with the Z axis being vertical. The axis of rotation of the rotary table 2 is parallel to the X-axis. The X-axis drive module is fixed to the worktable, the Y-axis drive module is fixed to the end of the X-axis drive module, the Z-axis drive module is fixed to the end of the Y-axis drive module, and the rotary table 2 is fixed to the end of the Z-axis drive module. The spindle 3's axis coincides with the axis of rotation of the rotary table 2, and the rotary table 2 can drive the spindle 3 and rollers to rotate around the axis. The spindle 3 has a 1-degree taper, exhibiting a slightly wider outer and narrower inner structure to prevent the roller ring from moving or falling off during rotation.

[0019] The laser support 6 includes mutually fixed pillars and beams, with the pillars being vertical and having smooth surfaces. The distance sensor 8 is located on one side of the outer circumference of the roller ring and spaced apart from it. It is mounted via a sensor bracket, which is sleeved on the pillar and forms a sliding fit with it. The sensor bracket is fixed at any height on the pillar through friction. The probe of the rangefinder is vertically aligned with the outer circumference of the roller ring.

[0020] The control mechanism 5 includes a screen, buttons, and a control chip, and is signal-connected to the three-axis drive mechanism 1, the rotary table 2, and the laser 4. The control mechanism 5 receives user input of the roller ring specifications and engraving content, and automatically controls the three-axis drive mechanism 1, the rotary table 2, and the laser 4 to perform engraving. The roller ring specifications include outer diameter, height, groove depth, groove edge distance, groove spacing, and the number of characters to be processed.

[0021] The specific process of laser engraving on a carbide square-hole roller ring using the above-mentioned equipment is as follows: S1: Adjust the height position of the distance sensor 8, specifically including: the Z-axis drive module of the three-axis drive mechanism 1 moves the spindle 3 to the middle height position between the laser head and the worktable (or ground), and records this position as A, to avoid the roller ring from colliding with other parts when moving too much; move the probe of the distance sensor 8 up and down to align with the spindle 3, so that the sensor displays the minimum distance, that is, the center of the distance sensor 8 and the spindle 3 are at the same height, fix the distance sensor 8, and record the measured value of the distance sensor 8 at this time as the reference distance; this step only needs to be performed when the equipment is used for the first time or after the position of the distance sensor 8 is misaligned, and then engraving operations can be performed on roller rings of various specifications; S2: Fix the roller ring to be engraved on the mandrel 3, and move the mandrel 3 to position A through the Z-axis drive module. Obtain the size of the roller ring based on the current distance measured by the distance sensor 8 and the reference distance. S3: The control mechanism 5 automatically controls the three-axis drive mechanism 1 to move the roller ring according to the roller ring specifications, so that the bottom of the roller ring groove is located at the laser focal length of the laser 4. S4: Keep the three-axis drive mechanism 1 stationary, and control mechanism 5 controls laser 4 to carve the first character at the bottom of the groove; S5: Control mechanism 5 controls the rotary table 2 to rotate at a certain angle, which is calculated by control mechanism 5 according to the roller ring specifications and character spacing requirements; S6: Laser 4 continues to engrave the next character; S7: Repeat steps S5 and S6 until the processing is complete.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A laser engraving device for a carbide square-hole roller ring, wherein the outer circular surface of the roller ring to be engraved is provided with a circumferentially extending roller ring groove, the cross-section of the roller ring groove being square, characterized in that, It includes a three-axis drive mechanism, a rotary table mounted at the end of the three-axis drive mechanism, a mandrel mounted on the rotary table, a laser mounted above the roller ring to be engraved, and a control mechanism for controlling the operation of the equipment; the roller ring to be engraved is sleeved and fixed on the mandrel, and the axial direction of the mandrel coincides with the rotation axis of the rotary table; the control mechanism is signal-connected to the three-axis drive mechanism, the rotary table, and the laser.

2. The device as described in claim 1, characterized in that, The mandrel has a taper of 0.5 to 1.5 degrees, exhibiting a structure that is wider on the outside and narrower on the inside.

3. The device as described in claim 1, characterized in that, The laser head of the laser is vertically downward, and the three-axis drive mechanism is used to adjust the position of the laser so that the laser head is aligned with the bottom of the roller ring groove.

4. The device as described in claim 1, characterized in that, The hardness of the roller ring to be engraved is HRA88~90.

5. The device as described in claim 1, characterized in that, The laser output power of the laser remains stable during the engraving process, ranging from 40 to 60W.

6. The device as described in claim 1, characterized in that, The device also includes a distance sensor for obtaining the outer diameter of the roller ring. The distance sensor is located on one side of the outer circular surface of the roller ring and is spaced apart from it. The control mechanism is signal-connected to the distance sensor.

7. The device as described in claim 6, characterized in that, The laser is fixed by a laser bracket, which includes a vertically arranged support column, on which a distance sensor bracket is mounted, and a distance sensor is fixed on the distance sensor bracket. The probe of the distance sensor is vertically aligned with the outer surface of the roller ring.

8. The device as described in claim 7, characterized in that, The sensor bracket and the support column are in a sliding fit, and the sensor bracket is fixed at any height position of the support column by friction.

9. The device as described in claim 1, characterized in that, The control mechanism includes a screen, buttons, and a control chip.

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