A vertical non-metal thinning round table surface grinding machine

Abstract

This invention provides a vertical non-metallic thinning rotary frustum surface grinder, belonging to the field of grinding machine technology. It includes a machine base, on which a rotary worktable with a vacuum chuck at its top is mounted, and a grinding wheel mechanism is mounted on the upper part of the rotary worktable and driven by a lifting mechanism. The grinding wheel mechanism and the rotary worktable are eccentrically positioned. A dual-head thickness detection mechanism is located on the side of the rotary worktable away from the grinding wheel mechanism, capable of detecting the workpiece thickness with the upper surface of the vacuum chuck as a reference. The dual-head thickness detection mechanism directly detects the workpiece thickness with the upper surface of the vacuum chuck as a reference, eliminating the need for step-by-step measurement, significantly improving detection efficiency, and eliminating data errors caused by detection time differences. The side-edge trimming mechanism can simultaneously complete the workpiece side-edge treatment, further optimizing the processing flow and improving the overall processing accuracy and practicality of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of grinding technology and relates to a vertical non-metallic thinning frustum surface grinder. Background Technology

[0002] In the field of workpiece machining using vertical non-metallic thinning rotary table surface grinders, the accuracy of workpiece thickness detection and machining efficiency directly determine product quality and production benefits. Currently, mainstream workpiece thickness detection schemes generally employ a single detection head design, which has inherent flaws in its detection process: it requires first detecting the distance between the detection head and the workpiece mounting platform, then detecting the distance between the detection head and the workpiece surface, and indirectly estimating the workpiece thickness through the difference between the two detection data. This step-by-step detection mode is not only cumbersome and inefficient, making it difficult to meet the demands of efficient and continuous thinning machining; more importantly, during the dynamic machining process of continuous workpiece thinning, the time interval between the two detections causes the detection data to lag behind the actual changes in workpiece thickness, resulting in significant detection errors. This directly affects the precise control of thinning process parameters, easily leading to problems of over-thinning or under-thinning of the workpiece. Furthermore, traditional equipment often lacks a side-treatment structure that coordinates with the thinning process, requiring additional side-trimming procedures after workpiece thinning. Secondary clamping can easily introduce positioning deviations, further reducing machining accuracy and production efficiency, failing to meet the demands of high-precision, integrated machining.

[0003] For example, a Chinese patent discloses a horizontal spindle vertical surface grinder [application number: 201710401922.7], which includes a bed, a column on the bed, a grinding head that can be vertically raised and lowered on the column, a grinding wheel seat at the front end of the grinding head, and a grinding wheel fixed on the grinding wheel seat; a slide is set on the guide rail of the bed and can move back and forth on the bed in the horizontal direction; one end of an adjustable angle plate is connected to one end of the slide through a hinge seat, and the other end of the adjustable angle plate is provided with a threaded seat, one end of a support stud for adjusting the angle is engaged with the threaded seat, and the other end of the support stud rests on the slide; a tailstock column is provided above the other end of the adjustable angle plate, an upper center seat is installed on the tailstock column, and the upper center seat can be raised and lowered along the guide rail on the tailstock column; a lower center seat is provided on the upper plane below the adjustable angle plate, and the lower center is fixed on the lower center seat. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a vertical non-metallic thinning frustum surface grinder.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A vertical non-metallic thinning rotary surface grinder includes a machine base, on which a rotary worktable with a vacuum chuck at the top is provided, and a grinding wheel mechanism is provided on the upper side of the rotary worktable and driven by a lifting mechanism. The grinding wheel mechanism and the rotary worktable are eccentrically arranged. A dual-head thickness detection mechanism is provided on the side of the rotary worktable away from the grinding wheel mechanism, which can detect the thickness of the workpiece with the upper end face of the vacuum chuck as a reference. A side trimming mechanism is also provided on the side of the rotary worktable away from the dual-head thickness detection mechanism.

[0007] In the aforementioned vertical non-metallic thinning rotary table surface grinder, the dual-head thickness detection mechanism includes a measuring head rotating shaft vertically mounted on the machine base and driven by a measuring head motor. The measuring head motor is located inside the machine base, and a ball bearing is provided between the measuring head rotating shaft and the machine base. A measuring head mounting plate is fixedly connected to the top of the measuring head rotating shaft, and two vertically mounted measuring heads are fixedly connected to the side of the measuring head mounting plate, with the two measuring heads being set at the same height.

[0008] In the above-mentioned vertical non-metallic thinning rotary table surface grinder, the rotary table consists of a fixed base and a table rotation shaft passing through the fixed base. The fixed base is also provided with an air slip ring sleeved on the outside of the table rotation shaft. The vacuum chuck is set on the top of the air slip ring. The fixed ring of the air slip ring is fixedly connected to the fixed base. The rotating ring of the air slip ring connects the table rotation shaft and the vacuum chuck. The machine base is also provided with a table motor connected to the table rotation shaft.

[0009] In the above-mentioned vertical non-metallic thinning rotary table surface grinder, the grinding wheel mechanism includes a grinding head body fixedly connected to the lifting mechanism. The grinding head body is provided with an electric spindle driven by a first grinding wheel motor. The electric spindle is rotatably connected to the grinding head body through a bearing. A thinning grinding wheel is fixedly connected to the bottom of the electric spindle.

[0010] In the aforementioned vertical non-metallic thinning frustum surface grinder, the centerline of the electric spindle is located on the side away from the centerline of the vacuum chuck and the rotary table.

[0011] In the above-mentioned vertical non-metallic thinning rotary table surface grinder, the lifting mechanism includes a column fixed on the machine base, and a lifting seat is connected to the side of the column near the grinding wheel mechanism via a slider slide rail structure. The grinding head body is fixed on the lifting seat, and the column is also provided with a lifting seat drive assembly that can drive the lifting seat to move in the vertical direction.

[0012] In the aforementioned vertical non-metallic thinning rotary table surface grinder, the lifting seat drive assembly includes a ball screw vertically fixed to the column via two bearing seats, a servo lifting motor located at the top of the column and powered by the ball screw, and a lifting slider screwed to the ball screw.

[0013] In the aforementioned vertical non-metallic thinning rotary table surface grinder, the slide rail structure includes two vertically fixed ball linear guides on the column and several guide rail sliders slidably disposed on the ball linear guides. The guide rail sliders are fixedly connected to the lifting seat.

[0014] In the above-mentioned vertical non-metallic thinning rotary table surface grinder, two balance cylinder mounting plates are fixedly connected to the top of the column, respectively arranged on both sides of the grinding head body. A nitrogen balance cylinder connected to the grinding head body is fixedly connected to the balance cylinder mounting plate. The nitrogen balance cylinder consists of a balance cylinder body fixed on the balance cylinder mounting plate and a balance cylinder piston rod connected to the grinding head body.

[0015] In the above-mentioned vertical non-metallic thinning rotary table surface grinder, the side trimming mechanism includes a grinding wheel rotating shaft that is vertically mounted on the machine base and driven by a second grinding wheel motor. The second grinding wheel motor is mounted inside the machine base, and a ball bearing is provided between the grinding wheel rotating shaft and the machine base. A trimming grinding wheel is fixedly connected to the top of the grinding wheel rotating shaft.

[0016] Compared with existing technologies, the advantages of this invention are:

[0017] 1. The grinding machine can achieve efficient workpiece thinning through the cooperation of the rotary table and the grinding wheel mechanism. The eccentric setting of the grinding wheel mechanism and the rotary table can reserve detection space for the dual-head thickness detection mechanism. The dual-head thickness detection mechanism directly detects the workpiece thickness with the upper surface of the vacuum chuck as the reference, eliminating the need for step-by-step measurement, greatly improving detection efficiency and eliminating data errors caused by detection time difference. The side trimming mechanism can simultaneously complete the side treatment of the workpiece, further optimizing the processing flow and improving the overall processing accuracy and practicality of the equipment.

[0018] 2. The dual-head thickness measurement mechanism adopts a design with a measuring head rotating shaft and a measuring head mounting plate. Two measuring heads of equal height perform synchronous measurements, respectively measuring the upper surface of the vacuum chuck and the upper surface of the workpiece. This allows the measurement data to accurately measure the thickness of the workpiece with the upper surface of the vacuum chuck as the reference, avoiding the deviation of single-head step-by-step measurement. The measuring head rotating shaft is connected to the machine base through ball bearings to ensure rotational stability and drive the measuring head to achieve multi-angle measurement, adapting to the thickness measurement needs of workpieces of different sizes and improving the accuracy and versatility of the measurement results.

[0019] 3. The balance cylinder mounting plate at the top of the column, in conjunction with the nitrogen balance cylinder design, features symmetrically positioned nitrogen balance cylinders on both sides of the grinding head body. The piston rods of the balance cylinders are connected to the grinding head body, providing balanced support for the grinding wheel mechanism. This design counteracts the downward tendency caused by the weight of the grinding wheel mechanism itself, making the lifting mechanism drive more smoothly, reducing load fluctuations during lifting, improving the positioning accuracy of the grinding wheel mechanism, and extending the service life of the lifting components.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a partial structural schematic diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a dual-head thickness detection mechanism. Detailed Implementation

[0025] like Figures 1-4 As shown, a vertical non-metallic thinning rotary table surface grinder includes a machine base 1. The machine base 1 is provided with a rotary worktable 3 with a vacuum chuck 2 at its top and a grinding wheel mechanism 5 located on the upper side of the rotary worktable 3 and driven by a lifting mechanism 4. The grinding wheel mechanism 5 and the rotary worktable 3 are eccentrically arranged. The rotary worktable 3 is provided with a double-head thickness detection mechanism 6 on the side away from the grinding wheel mechanism 5, which can detect the thickness of the workpiece with the upper end face of the vacuum chuck 2 as a reference. The rotary worktable 3 is also provided with a side trimming mechanism 7 on the side away from the double-head thickness detection mechanism 6.

[0026] In this invention, the grinding machine can achieve efficient workpiece thinning through the cooperation of the rotary table and the grinding wheel mechanism. The eccentric arrangement of the grinding wheel mechanism and the rotary table can reserve detection space for the dual-head thickness detection mechanism. The dual-head thickness detection mechanism directly detects the workpiece thickness with the upper surface of the vacuum chuck as the reference, eliminating the need for step-by-step measurement, greatly improving detection efficiency, and eliminating data errors caused by detection time differences. The side trimming mechanism can simultaneously complete the side treatment of the workpiece, further optimizing the processing flow and improving the overall processing accuracy and practicality of the equipment.

[0027] Specifically, the dual-head thickness detection mechanism 6 includes a measuring head rotating shaft 8 vertically mounted on a base 1 and driven by a measuring head motor. The measuring head motor is housed within the base 1, and a ball bearing is installed between the measuring head rotating shaft 8 and the base 1. A measuring head mounting plate 9 is fixedly connected to the top of the measuring head rotating shaft 8, and two vertically mounted measuring heads 10 are fixedly connected to the side of the measuring head mounting plate 9, with the two measuring heads 10 being set at the same height. The dual-head thickness detection mechanism employs a design where the measuring head rotating shaft works in conjunction with the measuring head mounting plate. The two equally-height measuring heads simultaneously detect the upper surface of the vacuum chuck and the upper surface of the workpiece, respectively. This allows the detection data to accurately measure the workpiece thickness using the upper surface of the vacuum chuck as a reference, avoiding the deviations of single-head step-by-step measurements. The measuring head rotating shaft is connected to the base via ball bearings, ensuring rotational stability and enabling multi-angle detection of the measuring heads. This adapts to the thickness measurement needs of workpieces of different sizes, improving the accuracy and versatility of the detection results.

[0028] Specifically, the rotary worktable 3 consists of a fixed base 11 and a worktable rotation shaft passing through the fixed base 11. The fixed base 11 also has an air slip ring 12 sleeved on the outside of the worktable rotation shaft. The vacuum suction cup 2 is located on top of the air slip ring 12. The fixed ring of the air slip ring 12 is fixedly connected to the fixed base 11, and the rotating ring of the air slip ring 12 connects the worktable rotation shaft and the vacuum suction cup 2. The machine base 1 also houses a worktable motor connected to the worktable rotation shaft. The rotary worktable adopts a structure design of a fixed base and an air slip ring. The fixed ring of the air slip ring is fixedly connected to the fixed base, and the rotating ring connects the worktable rotation shaft and the vacuum suction cup. This design ensures both stable rotation of the vacuum suction cup and continuous effectiveness of the vacuum adsorption function. This design ensures uniform adsorption force during vacuum suction cup rotation, preventing workpiece displacement. Simultaneously, the rotary structure driven by the worktable motor operates smoothly, providing stable motion support for workpiece thinning and improving processing consistency.

[0029] Specifically, the grinding wheel mechanism 5 includes a grinding head body 13 fixedly connected to the lifting mechanism 4. The grinding head body 13 is equipped with an electric spindle 14 driven by a first grinding wheel motor. The electric spindle 14 is rotatably connected to the grinding head body 13 via bearings, and a thinning grinding wheel 15 is fixedly connected to the bottom of the electric spindle 14. The grinding wheel mechanism employs a design where the grinding head body and electric spindle are coordinated. The electric spindle is rotatably connected to the grinding head body via bearings, ensuring high-speed rotation stability and driving the thinning grinding wheel to achieve efficient thinning. This structure offers high transmission precision, reduces vibration during operation, ensures uniform contact between the thinning grinding wheel and the workpiece, avoids problems of excessive or insufficient thinning in certain areas, and improves the flatness and precision of the workpiece after thinning.

[0030] Specifically, the centerline of the electric spindle 14 is located on the side away from the centerline of the vacuum chuck 2 and the rotary table 3. This offset of the electric spindle's centerline from the vacuum chuck's centerline, combined with the eccentric structure of the rotary table, ensures a more rational contact path between the workpiece and the thinning wheel during rotation, resulting in more uniform force distribution. This design avoids deformation caused by excessive localized force on the workpiece, while simultaneously expanding the coverage area of ​​a single thinning operation, thus improving thinning efficiency and workpiece processing quality.

[0031] Specifically, the lifting mechanism 4 includes a column 16 fixed on the base 1. A lifting seat 17 is connected to the side of the column 16 closest to the grinding wheel mechanism 5 via a slider-rail structure. The grinding head body 13 is fixed to the lifting seat 17. The column 16 also has a lifting seat drive assembly that drives the lifting seat 17 to move vertically. The lifting mechanism employs a column and slider-rail structure design. The lifting seat drive assembly drives the lifting seat to move vertically, achieving precise lifting of the grinding wheel mechanism. This structure allows for flexible adjustment of the distance between the grinding wheel mechanism and the workpiece, adapting to the thinning requirements of workpieces of different thicknesses. Furthermore, the slider-rail structure ensures the stability of the lifting process, preventing grinding wheel mechanism misalignment and improving processing accuracy.

[0032] Specifically, the lifting seat drive assembly includes a ball screw 19 vertically fixed to the column 16 via two bearing seats 18, a servo lifting motor 20 located at the top of the column 16 and powered by the ball screw 19, and a lifting slider 21 screwed to the ball screw 19. The lifting seat drive assembly employs a design combining a servo lifting motor and a ball screw. The ball screw is vertically fixed to the column via bearing seats and screwed to the lifting slider, achieving precise driving of the lifting seat. The servo lifting motor offers high control precision and can adjust the lifting speed and height according to processing requirements, making the positioning of the grinding wheel mechanism more accurate, meeting the parameter requirements of different thinning processes, and improving the processing flexibility of the equipment.

[0033] Specifically, the slider rail structure includes two vertically fixed ball linear guide rails 22 on the column 16 and several guide rail sliders 23 slidably mounted on the ball linear guide rails 22. The guide rail sliders 23 are fixedly connected to the lifting seat 17. The slider rail structure employs a design of double ball linear guide rails combined with guide rail sliders. The guide rail sliders are fixedly connected to the lifting seat, providing double-rail guiding support for the movement of the lifting seat. This structure improves the stability and straightness of the lifting seat's movement, avoids wobbling of the grinding wheel mechanism during lifting, ensures the accuracy of the contact position between the thinning grinding wheel and the workpiece, and further optimizes machining precision.

[0034] Preferably, two balance cylinder mounting plates 24, respectively disposed on both sides of the grinding head body 13, are fixedly connected to the top of the column 16. A nitrogen balance cylinder 25, connected to the grinding head body 13, is fixedly connected to the balance cylinder mounting plate 24. The nitrogen balance cylinder 25 consists of a balance cylinder body 26 fixed to the balance cylinder mounting plate 24 and a balance cylinder piston rod 27 connected to the grinding head body 13. The balance cylinder mounting plates at the top of the column, in conjunction with the design of the nitrogen balance cylinders, symmetrically arrange the nitrogen balance cylinders on both sides of the grinding head body. The piston rods of the balance cylinders are connected to the grinding head body, providing balanced support for the grinding wheel mechanism. This design counteracts the downward tendency caused by the weight of the grinding wheel mechanism itself, making the lifting mechanism drive more smoothly, reducing load fluctuations during lifting, improving the positioning accuracy of the grinding wheel mechanism, and extending the service life of the lifting components.

[0035] Specifically, the side trimming mechanism 7 includes a grinding wheel rotating shaft 28 vertically mounted on the machine base 1 and driven by a second grinding wheel motor. The second grinding wheel motor is located inside the machine base 1, and a ball bearing is provided between the grinding wheel rotating shaft 28 and the machine base 1. A trimming grinding wheel 29 is fixedly connected to the top of the grinding wheel rotating shaft 28. The side trimming mechanism adopts a design of grinding wheel rotating shaft and trimming grinding wheel. The grinding wheel rotating shaft is connected to the machine base through the ball bearing and is driven to rotate by the second grinding wheel motor, which drives the trimming grinding wheel to trim the side of the workpiece. This structure operates stably and can simultaneously complete the workpiece thinning and side trimming processes without secondary clamping, avoiding clamping errors and improving the overall processing accuracy and production efficiency of the workpiece.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A vertical non-metal thinning round-truncated cone flat grinding machine comprising a machine base (1), characterized in that, The machine base (1) is provided with a rotary worktable (3) with a vacuum suction cup (2) at the top and a grinding wheel mechanism (5) on the upper side of the rotary worktable (3) and driven by a lifting mechanism (4). The grinding wheel mechanism (5) and the rotary worktable (3) are eccentrically arranged. The rotary worktable (3) is provided with a double detection head thickness detection mechanism (6) on the side away from the grinding wheel mechanism (5) that can detect the thickness of the workpiece with the upper end face of the vacuum suction cup (2) as a reference. The rotary worktable (3) is also provided with a side trimming mechanism (7) on the side away from the double detection head thickness detection mechanism (6).

2. A vertical non-metal thinning truncated cone flat grinding machine according to claim 1, characterized in that, The dual-head thickness detection mechanism (6) includes a measuring head rotating shaft (8) that is vertically mounted on the base (1) and driven by a measuring head motor. The measuring head motor is located inside the base (1), and a ball bearing is provided between the measuring head rotating shaft (8) and the base (1). A measuring head mounting plate (9) is fixedly connected to the top of the measuring head rotating shaft (8), and two vertically mounted measuring heads (10) are fixedly connected to the side of the measuring head mounting plate (9), with the two measuring heads (10) being set at the same height.

3. A vertical non-metallic thinning frustum surface grinder according to claim 1, characterized in that, The rotary worktable (3) consists of a fixed base (11) and a worktable rotation shaft passing through the fixed base (11). The fixed base (11) is also provided with an air slip ring (12) sleeved on the outside of the worktable rotation shaft. The vacuum suction cup (2) is set on the top of the air slip ring (12). The fixed ring of the air slip ring (12) is fixedly connected to the fixed base (11). The rotating ring of the air slip ring (12) connects the worktable rotation shaft and the vacuum suction cup (2). The machine base (1) is also provided with a worktable motor connected to the worktable rotation shaft.

4. A vertical non-metallic thinning frustum surface grinder according to claim 3, characterized in that, The grinding wheel mechanism (5) includes a grinding head body (13) fixedly connected to the lifting mechanism (4). The grinding head body (13) is provided with an electric spindle (14) driven by a first grinding wheel motor. The electric spindle (14) is rotatably connected to the grinding head body (13) through a bearing. A thinning grinding wheel (15) is fixedly connected to the bottom of the electric spindle (14).

5. A vertical non-metallic thinning frustum surface grinder according to claim 4, characterized in that, The axis of the electric spindle (14) is located on the side away from the center line of the vacuum chuck (2) and the rotary table (3).

6. A vertical non-metallic thinning frustum surface grinder according to claim 4, characterized in that, The lifting mechanism (4) includes a column (16) fixed on the base (1). The column (16) is connected to the lifting seat (17) via a slider and slide rail structure on the side near the grinding wheel mechanism (5). The grinding head body (13) is fixed on the lifting seat (17). The column (16) is also provided with a lifting seat drive assembly that can drive the lifting seat (17) to move in the vertical direction.

7. A vertical non-metallic thinning frustum surface grinder according to claim 6, characterized in that, The lifting seat drive assembly includes a ball screw (19) vertically fixed on a column (16) via two bearing seats (18), a servo lifting motor (20) located on the top of the column (16) and powered by the ball screw (19), and a lifting slider (21) screwed to the ball screw (19).

8. A vertical non-metallic thinning frustum surface grinder according to claim 6, characterized in that, The slider rail structure includes two vertical ball linear guide rails (22) fixed on the column (16) and several guide rail sliders (23) slidably arranged on the ball linear guide rails (22). The guide rail sliders (23) and the lifting seat (17) are fixedly connected.

9. A vertical non-metallic thinning frustum surface grinder according to claim 6, characterized in that, The top of the column (16) is also fixedly connected to two balance cylinder mounting plates (24) respectively set on both sides of the grinding head body (13). The balance cylinder mounting plate (24) is fixedly connected to a nitrogen balance cylinder (25) connected to the grinding head body (13). The nitrogen balance cylinder (25) consists of a balance cylinder body (26) fixed on the balance cylinder mounting plate (24) and a balance cylinder piston rod (27) connected to the grinding head body (13).

10. A vertical non-metallic thinning frustum surface grinder according to claim 4, characterized in that, The side trimming mechanism (7) includes a grinding wheel rotating shaft (28) that is vertically mounted on the machine base (1) and driven by a second grinding wheel motor. The second grinding wheel motor is located inside the machine base (1), and a ball bearing is provided between the grinding wheel rotating shaft (28) and the machine base (1). A trimming grinding wheel (29) is fixedly connected to the top of the grinding wheel rotating shaft (28).

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