Static pressure type numerical control surface grinding machine

Abstract

The invention relates to the technical field of grinding equipment, and discloses a static pressure type numerical control surface grinding machine which comprises a grinding machine body, a grinding cavity formed in the grinding machine body, a grinding mechanism arranged in the grinding cavity, a supporting groove and a driving mechanism used for driving the supporting groove to move horizontally. A positioning assembly used for positioning a to-be-polished workpiece is arranged in the supporting groove, the positioning assembly comprises a plurality of positioning blocks, and a gap is formed between the bottom wall of each positioning block and the inner wall of the bottom of the supporting groove; according to the invention, through total-submerged cooling in the supporting groove, a cooling liquid circulating passage formed by matching of the liquid spraying box and the liquid returning box and the arrangement of the filtering mechanism, a workpiece and a grinding wheel are completely immersed in flowing cooling liquid in the grinding process, so that heat in a grinding area is rapidly, uniformly and fully taken away; workpiece thermal deformation and grinding wheel overheating failure are effectively restrained, and meanwhile grinding chippings directionally flow along with cooling liquid and are recycled through multi-stage filtering.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically a hydrostatic CNC surface grinder. Background Technology

[0002] Surface grinders are key equipment in machining to achieve high-precision surface grinding of workpieces, and are widely used in the precision machining of precision parts, molds, sheet metal, and other products. With the increasing demands of modern manufacturing for part precision, surface quality, and machining environment, traditional dry or semi-wet grinding methods are no longer sufficient to meet the needs of high-precision and environmentally friendly machining. Technologies such as hydrostatic support, closed-loop cooling, and automated chip removal are gradually becoming important development directions for high-end CNC surface grinders.

[0003] Existing CNC surface grinders typically employ a structure where the grinding wheel rotates for grinding and the workpiece is fed linearly by the worktable. During the grinding process, coolant is often sprayed to locally cool the grinding wheel and workpiece. The resulting grinding chips fall by gravity or are carried into the chip collection tank by the flushing fluid, and are then periodically removed by manual cleaning or a simple chip scraping mechanism. The workpiece is placed directly on the worktable and clamped and positioned by the positioning components before grinding.

[0004] Traditional structures of this type have obvious defects in practical use: spray cooling is difficult to cool the workpiece and grinding wheel sufficiently and evenly, which can easily lead to thermal deformation of the workpiece and a decrease in grinding accuracy; grinding chips are easily dispersed in the air or adhered to the worktable and positioning surface, and residual chips can affect the workpiece positioning reference, causing clamping offset and reducing machining accuracy and consistency.

[0005] Therefore, it is necessary to provide a hydrostatic CNC surface grinder to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a hydrostatic CNC surface grinder that achieves rapid, uniform, and sufficient removal of heat from the grinding area, effectively suppressing workpiece thermal deformation and grinding wheel overheating failure. At the same time, grinding debris flows directionally with the coolant and is recovered through multi-stage filtration, preventing debris from dispersing into the air and polluting the processing environment.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a hydrostatic CNC surface grinder, comprising a grinder body, a grinding chamber disposed within the grinder body, a grinding mechanism disposed within the grinding chamber, a support groove, and a driving mechanism for driving the support groove to move horizontally. The support groove is provided with a positioning component for positioning the workpiece to be ground. The positioning component includes multiple positioning blocks. A gap is provided between the bottom wall of the positioning blocks and the bottom inner wall of the support groove. A scraper is slidably disposed at the bottom of the inner cavity of the support groove. The bottom wall of the scraper is in contact with the support groove, and the height of the top wall of the scraper is lower than the height of the bottom wall of the positioning blocks. A transmission component is provided within the support groove for driving the scraper to move within the support groove. A spray box and a return box are respectively disposed on both sides of the support groove. The spray box is used to input coolant into the support groove, and the return box is used to recover the coolant.

[0008] A further feature of the present invention is that: a plurality of liquid outlet holes are provided on one side wall of the support groove, and a recovery channel is provided on the other opposite side wall of the support groove; the plurality of liquid outlet holes are all connected to the spray box, and a filter screen is fixedly installed in each of the plurality of liquid outlet holes; the recovery channel is connected to the return box.

[0009] A further provision of the present invention is that: a filtration mechanism is provided on the side wall of the support groove, the filtration mechanism including a filter box, an outlet pipe, a return pipe, a filter screen frame fixedly installed inside the filter box, and a filter screen one fixedly installed inside the filter screen frame. The filter screen one is inclined. One side of the filter box is connected to the spray box through the outlet pipe, and the other side of the filter box is connected to the return box through the return pipe. A water pump is provided on the outlet pipe.

[0010] A further provision of the present invention is that an insertion interface is provided on one side of the bottom of the filter box, and a storage box is inserted into the bottom of the insertion interface.

[0011] A further configuration of the present invention is as follows: the transmission assembly includes a bellows and two guide posts, two guide posts are provided, the two guide posts are arranged parallel to each other, the ends of the guide posts are fixedly connected to the inner sidewall of the support groove, the guide posts penetrate the scraper, and the scraper and the guide posts are slidably engaged, one end of the bellows is fixedly connected to the scraper, and the other end of the bellows is connected to the spray box.

[0012] A further feature of the present invention is that: a mounting bracket is fixedly installed on the upper part of the support groove, an electric push rod three is fixedly installed on the top of the mounting bracket, a sealing plate for sealing the liquid outlet is fixedly installed on the output end of the electric push rod three, and a notch is provided at the bottom of the sealing plate, the notch being adapted to the corrugated pipe.

[0013] A further configuration of the present invention is as follows: a liquid storage assembly is provided below the support groove, the liquid storage assembly includes a liquid storage box, an electric push rod II, and an adjusting plate. The liquid storage box is fixedly connected to the lower surface of the support groove. A second connecting port is provided on the liquid storage box. A first connecting port is provided at the bottom of the filter box. The first connecting port and the second connecting port are connected. The second electric push rod is fixedly connected to the side wall of the liquid storage box. The adjusting plate is slidably disposed inside the liquid storage box, and the output end of the second electric push rod is fixedly connected to the adjusting plate.

[0014] A further configuration of the present invention is as follows: the driving mechanism includes a longitudinal driving component and a transverse driving component. The longitudinal driving component includes a first hydrostatic guide rail, a first slide block slidably disposed inside the first hydrostatic guide rail, a first screw rotatably disposed inside the first hydrostatic guide rail, and a first motor fixedly installed at the end of the first hydrostatic guide rail. The first hydrostatic guide rail is fixedly installed at the bottom of the grinding chamber. The first screw penetrates the first slide block and is threadedly connected to the first slide block. The output end of the first motor is fixedly connected to the end of the first screw. The transverse driving component includes a second hydrostatic guide rail, a second slide block slidably disposed inside the second hydrostatic guide rail, a second screw rotatably disposed inside the second hydrostatic guide rail, and a second motor fixedly installed at the end of the second hydrostatic guide rail. The second hydrostatic guide rail is fixedly installed on the first slide block. The second screw penetrates the second slide block and is threadedly connected to the second slide block. The output end of the second motor is fixedly connected to the end of the second screw. The lower surface of the support groove is fixedly connected to the second slide block.

[0015] A further configuration of the present invention is as follows: the grinding mechanism includes a transmission box, a third motor, a grinding wheel, and a hydrostatic shaft. The third motor is fixedly mounted on the transmission box, and the hydrostatic shaft is rotatably mounted on the transmission box. The output end of the third motor is connected to the hydrostatic shaft for transmission. The grinding wheel is fixedly mounted on the hydrostatic shaft. A mounting base is fixedly mounted on the top of the inner cavity of the grinding chamber. An electric push rod is fixedly mounted on the lower surface of the mounting base. A lifting seat is fixedly mounted on the output end of the electric push rod. The lifting seat is fixedly connected to the transmission box.

[0016] A further feature of the present invention is that the positioning assembly further includes multiple connecting rods and multiple fixing frames, the multiple fixing frames being fixedly connected to the side wall of the support groove, and the multiple positioning blocks being fixedly connected to the fixing frames via connecting rods.

[0017] In summary, the present invention has the following beneficial effects: By using a fully submerged cooling system within the support tank, a coolant circulation path formed by the combination of the spray box and the return box, and a filtration mechanism, the present invention ensures that the workpiece and grinding wheel are completely immersed in the flowing coolant during the grinding process. This achieves rapid, uniform, and thorough removal of heat from the grinding area, effectively suppressing workpiece thermal deformation and grinding wheel overheating failure. At the same time, grinding debris flows directionally with the coolant and is recovered through multi-stage filtration, preventing debris from dispersing into the air and polluting the processing environment. This results in improved cooling effect, extended grinding wheel life, improved processing conditions, and green and environmentally friendly processing.

[0018] This invention utilizes a suspended positioning block, a movable scraper at the bottom of the support groove, and a transmission component driven by coolant. This allows the scraper to pass under the positioning block and clean the bottom inner wall of the support groove, achieving automatic and thorough removal of residual debris in the area between multiple positioning blocks. This ensures a clean and flat workpiece positioning reference surface, eliminates the adverse effects of debris on clamping accuracy, and utilizes an existing circulating water pump to drive the scraper, eliminating the need for additional independent drive components. This significantly improves workpiece positioning accuracy and grinding precision, simplifies equipment structure, reduces manufacturing costs, and enhances equipment automation and reliability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the grinding mechanism of the present invention; Figure 3 This is one of the structural schematic diagrams of the support groove and drive mechanism of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram at point A; Figure 5 This is a second schematic diagram of the support groove and drive mechanism of the present invention; Figure 6 This is a schematic diagram of the drive mechanism of the present invention; Figure 7 This is a schematic diagram of the front cross-sectional structure of the support groove of the present invention; Figure 8 This is a cross-sectional view of the filtration mechanism of the present invention. Figure 9 This is a cross-sectional view of the liquid storage assembly of the present invention.

[0020] In the diagram: 1. Grinding machine body; 2. Longitudinal drive assembly; 201. Hydrostatic guide rail one; 202. Slide one; 203. Screw one; 204. Motor one; 3. Transverse drive assembly; 301. Hydrostatic guide rail two; 302. Slide two; 303. Screw two; 304. Motor two; 4. Support groove; 401. Liquid outlet; 402. Filter screen two; 403. Recovery channel; 5. Filtration mechanism; 501. Filter box; 502. Filter screen frame; 503. Filter screen one; 504. Insertion interface; 505. Valve plate; 506. Adjustment knob; 507. Connecting port one; 6. Grinding mechanism; 601. Mounting base; 602. Electric... Push rod 1; 603, Lifting seat; 604, Guide column 1; 605, Motor 3; 606, Transmission box; 607, Grinding wheel; 608, Static pressure shaft; 609, Shielding cover; 7, Liquid storage assembly; 701, Liquid storage box; 702, Adjusting plate; 703, Electric push rod 2; 704, Connecting port 2; 8, Spray box; 9, Discharge pipe; 10, Water pump; 11, Return box; 12, Return pipe; 13, Fixing frame; 14, Connecting rod; 15, Positioning block; 16, Scraper; 17, Guide column 2; 18, Corrugated pipe; 19, Mounting frame; 20, Electric push rod 3; 21, Sealing plate; 2101, Notch; 22, Miscellaneous storage box. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] Please see Figures 1 to 7In this embodiment of the invention, a hydrostatic CNC surface grinder includes a grinder body 1, a grinding chamber disposed within the grinder body 1, a grinding mechanism 6 disposed within the grinding chamber, a support groove 4, and a driving mechanism for driving the support groove 4 to move horizontally. The support groove 4 is provided with a positioning component for positioning the workpiece to be ground. The positioning component includes multiple positioning blocks 15, with a gap between the bottom wall of each positioning block 15 and the bottom inner wall of the support groove 4. A scraper 16 is slidably disposed at the bottom of the inner cavity of the support groove 4, with the bottom wall of the scraper 16 fitting against the support groove 4, and the height of the top wall of the scraper 16 being lower than the height of the bottom wall of the positioning blocks 15. A transmission assembly for driving the scraper 16 to move within the support groove 4 is installed inside the groove 4. A spray box 8 and a return box 11 are respectively installed on both sides of the support groove 4. The spray box 8 is used to input coolant into the support groove 4, and the return box 11 is used to recover the coolant. The coolant is a water-based synthetic grinding fluid, whose main components are deionized water, rust inhibitor, extreme pressure lubricant, defoamer, and antibacterial agent. It possesses good cooling, lubrication, rust prevention, and filtration fluidity, forming a liquid film in the grinding area to reduce frictional temperature rise, while providing rust protection for the metal parts of the grinding machine, and can smoothly circulate and filter grinding debris. In practical use, the workpiece to be ground is placed... The workpiece is positioned within the support groove 4 by multiple positioning blocks 15. After positioning, the protective door of the grinding machine body 1 is closed, and coolant is introduced into the support groove 4 through the spray box 8, ensuring the coolant level is higher than the workpiece to be ground. The workpiece is then ground by the grinding mechanism 6. During grinding, the spray box 8 continuously introduces coolant into the support groove 4, and the coolant is discharged through the return box 11, maintaining a continuous flow of coolant within the support groove 4. Because the workpiece is submerged in the coolant, any debris generated flows with the coolant into the return box 11 for recycling. This prevents the debris from dispersing into the air, thus avoiding contamination of the processing environment. The total submersion cooling method quickly removes grinding heat, effectively preventing workpiece temperature rise and deformation and overheating and burnout of the grinding mechanism 6 during grinding. After the workpiece is ground, it is removed and the coolant in the support groove 4 is drained. Then, the scraper 16 is driven to move in the support groove 4 through the transmission component. When the scraper 16 moves, it passes under the positioning block 15 to thoroughly clean the debris attached to the inner wall of the support groove 4. This ensures that when the workpiece to be ground is placed in the support groove 4, the bottom surface of the workpiece is stably attached to the positioning block 15 and will not be pressed on the residual debris, thereby eliminating the interference of debris on the workpiece positioning accuracy and significantly improving the workpiece grinding accuracy and consistency.

[0023] In this embodiment, preferably, the positioning assembly further includes multiple connecting rods 14 and multiple fixing frames 13. The multiple fixing frames 13 are all fixedly connected to the side wall of the support groove 4, and the multiple positioning blocks 15 are all fixedly connected to the fixing frames 13 through the connecting rods 14 to realize the installation of the positioning blocks 15. The installation position of the fixing frames 13 can be adjusted, and the specifications of the positioning blocks 15 and connecting rods 14 can also be selected according to the requirements to adapt to different workpieces.

[0024] In this embodiment, preferably, the driving mechanism includes a longitudinal driving component 2 and a transverse driving component 3. The longitudinal driving component 2 includes a hydrostatic guide rail 201, a slide block 202 slidably disposed inside the hydrostatic guide rail 201, a screw 203 rotatably disposed inside the hydrostatic guide rail 201, and a motor 204 fixedly installed at the end of the hydrostatic guide rail 201. The hydrostatic guide rail 201 is fixedly installed at the bottom of the grinding chamber. The screw 203 passes through the slide block 202 and is threadedly connected to the slide block 202. The output end of the motor 204 is fixedly connected to the end of the screw 203. The transverse driving component 3 includes a hydrostatic guide rail 301, a slide block 302 slidably disposed inside the hydrostatic guide rail 301, a screw 303 rotatably disposed inside the hydrostatic guide rail 301, and a motor 304 fixedly installed at the end of the hydrostatic guide rail 301. Guide rail 2 301 is fixedly installed on slide 1 202. Screw 2 303 passes through slide 2 302 and is threadedly connected to slide 2 302. The output end of motor 2 304 is fixedly connected to the end of screw 2 303. The lower surface of support groove 4 is fixedly connected to slide 2 302. During operation, motor 1 204 drives screw 1 203 to rotate. Screw 1 203 drives slide 202 to move longitudinally along hydrostatic guide rail 1 201 through threaded transmission, thereby driving hydrostatic guide rail 2 301 to move longitudinally as a whole. Motor 2 304 drives screw 2 303 to rotate. Screw 2 303 drives slide 2 302 to move laterally along hydrostatic guide rail 2 301 through threaded transmission, thereby driving support groove 4 to achieve precise longitudinal and transverse displacement in the horizontal plane. Combined with the low friction, high rigidity, and high motion stability of hydrostatic guide rail, high-precision and low-vibration horizontal feed drive of support groove 4 is achieved.

[0025] In this embodiment, preferably, the grinding mechanism 6 includes a transmission box 606, a motor 605, a grinding wheel 607, and a hydrostatic shaft 608. The motor 605 is fixedly mounted on the transmission box 606, and the hydrostatic shaft 608 is rotatably mounted on the transmission box 606. The output end of the motor 605 is connected to the hydrostatic shaft 608 via a belt and pulley, which are located inside the transmission box 606. The grinding wheel 607 is fixedly mounted on the hydrostatic shaft 608. A mounting base 601 is fixedly mounted on the top of the grinding chamber. An electric push rod 602 is fixedly mounted on the lower surface of the mounting base 601. A lifting seat 603 is fixedly mounted on the output end of the electric push rod 602. The lifting seat 603 is fixedly connected to the transmission box 606. Two guide posts 604 are fixedly mounted on the lower surface of the mounting base 601. All 604s penetrate the lifting seat 603, and the guide post 604 slides in conjunction with the lifting seat 603. The hydrostatic shaft 608 adopts a liquid hydrostatic support structure, and the shaft and bearing achieve non-contact support through a pressure lubricating oil film. It has the advantages of high rotational accuracy, low frictional resistance, low temperature rise, low vibration, and long service life. It can significantly reduce vibration and noise during high-speed rotation, and ensure the grinding accuracy and surface quality of the grinding wheel 607. The guide post 604 can limit the lifting of the lifting seat 603. The extension and retraction of the output end of the electric push rod 602 can drive the lifting seat 603, which in turn drives the grinding mechanism 6 to lift, thereby driving the grinding wheel 607 to lift, so that the grinding wheel 607 can contact the workpiece to be ground. The motor 605 can drive the hydrostatic shaft 608 to rotate through the belt and pulley. When the hydrostatic shaft 608 rotates, it drives the grinding wheel 607 to rotate, so as to grind the workpiece.

[0026] In this embodiment, preferably, a shield 609 is fixedly installed on the side wall of the transmission box 606, and the grinding wheel 607 is disposed inside the shield 609. When the grinding wheel 607 grinds the workpiece, the bottom opening of the shield 609 is ground into the coolant. By setting the shield 609, the coolant splashed during grinding can be blocked by the shield 609 to prevent the coolant from splashing outward.

[0027] Please see Figures 3-9 In this embodiment of the invention, a plurality of liquid outlet holes 401 are provided on one side wall of the support groove 4, and a recovery channel 403 is provided on the other opposite side wall of the support groove 4. The plurality of liquid outlet holes 401 are all connected to the spray box 8, and a filter screen 402 is fixedly installed in each of the plurality of liquid outlet holes 401. The recovery channel 403 is connected to the return box 11. During grinding, the coolant output from the spray box 8 enters the support groove 4 through the liquid outlet holes 401. The coolant in the support groove 4, together with the debris, flows back to the return box 11 through the recovery channel 403. The filter screen 402 is provided to prevent the debris in the support groove 4 from flowing back into the spray box 8.

[0028] In this embodiment, preferably, a filtration mechanism 5 is provided on the side wall of the support groove 4. The filtration mechanism 5 includes a filter box 501, an outlet pipe 9, a return pipe 12, a filter screen frame 502 fixedly installed inside the filter box 501, and a filter screen 503 fixedly installed inside the filter screen frame 502. The filter screen 503 is inclined. One side of the filter box 501 is connected to the spray box 8 through the outlet pipe 9, and the other side of the filter box 501 is connected to the return box 11 through the return pipe 12. A water pump 10 is provided on the outlet pipe 9. During the process, the water pump 10 operates continuously. Under the suction of the water pump 10, the coolant that has been preliminarily purified in the filter box 501 is sent to the spray box 8 through the outlet pipe 9, and then evenly sprayed into the support tank 4 through the spray box 8 and the outlet hole 401. At the same time, the coolant containing debris in the support tank 4 flows into the return box 11 through the recovery channel 403, and then flows back to the filter box 501 through the return pipe 12. When the coolant passes through the filter screen 503, the debris is intercepted and filtered. The purified coolant re-enters the outlet pipe 9 to participate in the circulation, realizing the continuous, clean and closed-loop circulation of coolant.

[0029] In this embodiment, preferably, a connector 504 is provided on one side of the bottom of the filter box 501, and a storage box 22 is inserted into the bottom of the connector 504. The debris filtered by the filter screen 503 falls downward into the storage box 22 under its own gravity, thereby recycling the debris. A valve plate 505 is rotatably installed in the connector 504, and an adjustment knob 506 for controlling the rotation of the valve plate 505 is provided on the connector 504. The rotation of the valve plate 505 is damped. When there is a lot of debris in the storage box 22, the valve plate 505 is rotated by adjusting the knob 506, so that the valve plate 505 closes the connector 504. Then the storage box 22 is taken out to pour out the debris. Then the storage box 22 is reinstalled on the connector 504, and coolant is added to the support groove 4 as needed.

[0030] In this embodiment, preferably, the transmission assembly includes a bellows 18 and two guide posts 17. Two guide posts 17 are provided, arranged parallel to each other. The ends of the guide posts 17 are fixedly connected to the inner wall of the support groove 4. The guide posts 17 penetrate the scraper 16, and the scraper 16 and guide posts 17 are slidably engaged. One end of the bellows 18 is fixedly connected to the scraper 16, and the other end of the bellows 18 is connected to the spray box 8. A mounting bracket 19 is fixedly installed on the upper part of the support groove 4. An electric push rod 20 is fixedly installed on the top of the mounting bracket 19. A sealing plate 21 for sealing the liquid outlet 401 is fixedly installed at the output end of the electric push rod 20. A notch 2101 is provided at the bottom of the sealing plate 21, which is adapted to the bellows 18, so that the sealing plate 21 does not affect the bellows when sealing the liquid storage hole. 18; The bellows 18 is equipped with a return spring inside, which allows the bellows 18 to retract and return to its original position after the external force is removed when it is extended. When the bottom of the support groove 4 needs to be cleaned, the electric push rod 20 drives the sealing plate 21 to move downward to close the liquid outlet 401, cutting off the liquid supply passage from the spray box 8 to the support groove 4. At this time, all the coolant output by the water pump 10 enters the bellows 18. The hydraulic pressure pushes the bellows 18 to extend axially, which in turn pushes the scraper 16 to slide directionally along the guide post 17 to scrape and clean the inner wall of the bottom of the support groove 4. After cleaning, the pressure is released and the water pump 10 is turned off. The bellows 18 automatically retracts and returns to its original position under the action of the internal return spring, driving the scraper 16 to return to its original position. This structure uses the existing water pump 10 as a power source to drive the scraper 16 to move, without the need to add independent drive components such as motors and cylinders, simplifying the structure and reducing energy consumption and equipment manufacturing costs.

[0031] In this embodiment, preferably, a liquid storage assembly 7 is provided below the support groove 4. The liquid storage assembly 7 includes a liquid storage box 701, a second electric push rod 703, and an adjusting plate 702. The liquid storage box 701 is fixedly connected to the lower surface of the support groove 4. A second connecting port 704 is provided on the liquid storage box 701. A first connecting port 507 is provided at the bottom of the filter box 501. The first connecting port 507 is connected to the second connecting port 704. The second electric push rod 703 is fixedly connected to the side wall of the liquid storage box 701. The adjusting plate 702 is slidably disposed inside the liquid storage box 701, and the output end of the second electric push rod 703 is fixedly connected to the adjusting plate 702. The outer periphery of the plate 702 is provided with a sealing structure to keep the outer periphery of the adjusting plate 702 sealed with the inner wall of the liquid storage box 701. The liquid storage box 701 is provided with a cooling structure and a heat dissipation structure to reduce the temperature of the coolant. The liquid level of the coolant in the support tank 4 can be adjusted by the liquid storage component 7. During adjustment, the horizontal movement of the adjusting plate 702 is controlled by the extension and retraction of the output end of the electric push rod 703, so that the coolant in the liquid storage box 701 decreases or increases, thereby increasing or decreasing the coolant in the support tank 4 to adjust the coolant level in the support tank 4. It can also drain the coolant in the support tank 4 after grinding is completed to facilitate the subsequent placement of the workpiece to be ground.

[0032] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A hydrostatic CNC surface grinder, comprising a grinder body (1), a grinding chamber disposed within the grinder body (1), a grinding mechanism (6) disposed within the grinding chamber, a support groove (4), and a driving mechanism for driving the support groove (4) to move horizontally, wherein a positioning component for positioning the workpiece to be ground is disposed within the support groove (4), the positioning component comprising a plurality of positioning blocks (15), characterized in that: A gap is provided between the bottom wall of the positioning block (15) and the bottom inner wall of the support groove (4). A scraper (16) is slidably provided at the bottom of the inner cavity of the support groove (4). The bottom wall of the scraper (16) is in contact with the support groove (4), and the height of the top wall of the scraper (16) is lower than the height of the bottom wall of the positioning block (15). A transmission component for driving the scraper (16) to move in the support groove (4) is provided in the support groove (4). A spray box (8) and a return box (11) are respectively provided on both sides of the support groove (4). The spray box (8) is used to input coolant into the support groove (4), and the return box (11) is used to recover the coolant.

2. The hydrostatic CNC surface grinder according to claim 1, characterized in that: The support groove (4) has multiple liquid outlet holes (401) on one side wall and a recovery channel (403) on the other opposite side wall. The multiple liquid outlet holes (401) are connected to the spray box (8) and each of the multiple liquid outlet holes (401) is fixedly provided with a filter screen (402). The recovery channel (403) is connected to the return box (11).

3. A hydrostatic CNC surface grinder according to claim 2, characterized in that: The side wall of the support groove (4) is provided with a filter mechanism (5). The filter mechanism (5) includes a filter box (501), an outlet pipe (9), a return pipe (12), a filter frame (502) fixedly installed inside the filter box (501), and a filter screen (503) fixedly installed inside the filter frame (502). The filter screen (503) is inclined. One side of the filter box (501) is connected to the spray box (8) through the outlet pipe (9), and the other side of the filter box (501) is connected to the return box (11) through the return pipe (12). A water pump (10) is provided on the outlet pipe (9).

4. A hydrostatic CNC surface grinder according to claim 3, characterized in that: A plug-in interface (504) is provided on one side of the bottom of the filter box (501), and a storage box (22) is plugged into the bottom of the plug-in interface (504).

5. A hydrostatic CNC surface grinder according to claim 1, characterized in that: The transmission assembly includes a bellows (18) and two guide posts (17). There are two guide posts (17), which are arranged parallel to each other. The ends of the guide posts (17) are fixedly connected to the inner wall of the support groove (4). The guide posts (17) penetrate the scraper (16), and the scraper (16) and the guide posts (17) are slidably engaged. One end of the bellows (18) is fixedly connected to the scraper (16), and the other end of the bellows (18) is connected to the spray box (8).

6. A hydrostatic CNC surface grinder according to claim 5, characterized in that: A mounting bracket (19) is fixedly installed on the upper part of the support groove (4). An electric push rod three (20) is fixedly installed on the top of the mounting bracket (19). A sealing plate (21) for sealing the liquid outlet (401) is fixedly installed at the output end of the electric push rod three (20). A notch (2101) is provided at the bottom of the sealing plate (21), and the notch (2101) is adapted to the corrugated pipe (18).

7. A hydrostatic CNC surface grinder according to claim 3, characterized in that: A liquid storage assembly (7) is provided below the support groove (4). The liquid storage assembly (7) includes a liquid storage box (701), an electric push rod two (703), and an adjusting plate (702). The liquid storage box (701) is fixedly connected to the lower surface of the support groove (4). A connecting port two (704) is provided on the liquid storage box (701). A connecting port one (507) is provided at the bottom of the filter box (501). The connecting port one (507) is connected to the connecting port two (704). The electric push rod two (703) is fixedly connected to the side wall of the liquid storage box (701). The adjusting plate (702) is slidably disposed in the liquid storage box (701), and the output end of the electric push rod two (703) is fixedly connected to the adjusting plate (702).

8. A hydrostatic CNC surface grinder according to claim 1, characterized in that: The driving mechanism includes a longitudinal driving assembly (2) and a transverse driving assembly (3). The longitudinal driving assembly (2) includes a hydrostatic guide rail (201), a slide block (202) slidably disposed inside the hydrostatic guide rail (201), a screw (203) rotatably disposed inside the hydrostatic guide rail (201), and a motor (204) fixedly installed at the end of the hydrostatic guide rail (201). The hydrostatic guide rail (201) is fixedly installed at the bottom of the grinding chamber. The screw (203) passes through the slide block (202) and is threadedly connected to the slide block (202). The output end of the motor (204) is fixedly connected to the end of the screw (203). The transverse drive assembly (3) includes a second hydrostatic guide rail (301), a second slide block (302) slidably disposed inside the second hydrostatic guide rail (301), a second screw (303) rotatably disposed inside the second hydrostatic guide rail (301), and a second motor (304) fixedly installed at the end of the second hydrostatic guide rail (301). The second hydrostatic guide rail (301) is fixedly installed on the first slide block (202). The second screw (303) passes through the second slide block (302) and is threadedly connected to the second slide block (302). The output end of the second motor (304) is fixedly connected to the end of the second screw (303). The lower surface of the support groove (4) is fixedly connected to the second slide block (302).

9. A hydrostatic CNC surface grinder according to claim 1, characterized in that: The grinding mechanism (6) includes a transmission box (606), a third motor (605), a grinding wheel (607), and a hydrostatic shaft (608). The third motor (605) is fixedly mounted on the transmission box (606), and the hydrostatic shaft (608) is rotatably mounted on the transmission box (606). The output end of the third motor (605) is connected to the hydrostatic shaft (608) for transmission. The grinding wheel (607) is fixedly mounted on the hydrostatic shaft (608). A mounting base (601) is fixedly mounted on the top of the inner cavity of the grinding chamber. An electric push rod (602) is fixedly mounted on the lower surface of the mounting base (601). A lifting seat (603) is fixedly mounted on the output end of the electric push rod (602). The lifting seat (603) is fixedly connected to the transmission box (606).

10. A hydrostatic CNC surface grinder according to claim 1, characterized in that: The positioning assembly also includes multiple connecting rods (14) and multiple fixing frames (13). The multiple fixing frames (13) are all fixedly connected to the side wall of the support groove (4), and the multiple positioning blocks (15) are all fixedly connected to the fixing frames (13) through the connecting rods (14).

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