Numerical control surface grinder for shaft machining

Abstract

The application relates to the technical field of grinding machines, and discloses a numerical control surface grinding machine for shaft machining, which comprises a grinding machine base, a grinding wheel and a cooling liquid spray head connected through a lifting assembly on the vertical seat at the rear of the grinding machine base; a movable base capable of moving forward and backward is arranged at the upper end of the grinding machine base, a movable box capable of moving left and right is arranged at the upper end of the movable base, a receiving box is fixed to the upper end of the movable box, two groups of deslagging cavities are formed between the movable box and the receiving box, one end of the deslagging cavity is communicated with a temporary storage groove at the side of the movable box; a deslagging auger is arranged in the deslagging cavity, and a deslagging groove at the top of the deslagging cavity is communicated with a receiving groove in the receiving box; the baffle assembly can be opened and closed in linkage with the machining state; when the baffle assembly is opened, the feeding of the to-be-machined rotating shaft is not hindered, and the to-be-machined rotating shaft is beneficially automatically rolled between the two rows of receiving wheels at the upper end of the receiving seat assembly; when the baffle assembly tends to be closed, the machining area is shielded, the scattering of the chips is prevented, and the operation safety is improved.

Description

Technical Field

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

[0002] Existing CNC surface grinders for shaft machining have significant limitations. Traditional clamping structures are mostly rigid, which easily leads to workpiece wear, chipping, and machining misalignment, resulting in poor machining accuracy. Furthermore, conventional grinders have simple protective structures, allowing grinding debris and coolant to splash easily, posing a safety risk. In addition, the slag removal system starts and stops independently, unable to be linked with machining actions, leading to untimely collection and discharge of waste slag and coolant, which can accumulate in the machining area, affecting grinding operations and equipment operation. Therefore, we have introduced a new CNC surface grinder for shaft machining. Summary of the Invention

[0003] The purpose of this invention is to provide a CNC surface grinder for machining shafts, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a CNC surface grinder for shaft machining, comprising a grinder base, wherein a grinding wheel and a coolant nozzle are connected to a vertical support at the rear of the grinder base by a lifting assembly; The upper end of the grinding machine base is provided with a movable base that can move back and forth. The upper end of the movable base is provided with a movable box that can move left and right. The upper end of the movable box is fixed with a receiving box. Two sets of slag discharge chambers are formed between the movable box and the receiving box. One end of the slag discharge chamber is connected to the temporary storage groove on the side of the movable box. The slag discharge chamber is equipped with a slag discharge auger. The slag leakage groove at the top of the slag discharge chamber is connected to the receiving groove inside the receiving box. A protrusion is provided in the middle of the receiving groove. A receiving seat assembly for placing the rotating shaft to be processed is provided in the sliding groove of the protrusion. The bottom of the receiving seat assembly is fixed on a return spring in the sliding groove. End clamping assemblies are provided at both ends of the receiving groove. The end clamping assemblies are used to clamp the rotating shaft to be processed from both ends. The receiving groove is internally rotatably connected to a front-to-back baffle assembly. The receiving seat assembly extends out of the receiving groove at both ends and is connected to the baffle assembly and the slag discharge auger by a gear drive.

[0005] Preferably, the side of the support is provided with an upper inner groove and a lower inner groove, and the lifting assembly includes a lifting motor installed in the lower inner groove, a lead screw provided in the upper inner groove, and a lifting seat slidably connected to the upper inner groove. The upper inner groove has light rods that penetrate the lifting seat on both sides, and the bottom of the lead screw is connected to the output end of the lifting motor.

[0006] Preferably, the upper inner groove and the lower inner groove are sealed by an upper cover plate and a lower grid plate, respectively, and the front end of the lifting seat is provided with an L-shaped frame, which extends through a vertical groove on the upper cover plate; A grinding motor is installed on one side of the end of the L-shaped frame. The output end of the grinding motor passes through the L-shaped frame and is connected and fixed to the grinding wheel. A protective cover covering the upper outer side of the grinding wheel is also fixed on the other side of the end of the L-shaped frame. The coolant nozzle is installed on the protective cover. The L-shaped frame is also fixed with a motor protective cover that covers the outside of the grinding motor.

[0007] Preferably, the fixing lugs at the bottom of the receiving box are fixed to the upper end of the movable box by bolts; The slag discharge chamber includes two sets of bottom chambers at the top of the movable box and two sets of top chambers at the bottom of the receiving box. The top chambers are sealed on the top of the corresponding bottom chambers to form the slag discharge chamber. The slag leakage channel is located at the top of the corresponding top cavity.

[0008] Preferably, a slag discharge trough is provided at one end of the bottom cavity, and a filter screen is provided at the upper part of the temporary storage trough, the height of which is lower than that of the slag discharge trough; The side of the mobile box is equipped with a drain pipe that communicates with the temporary storage tank.

[0009] Preferably, the receiving groove is provided with end baffles at both ends, and the end clamping assembly includes a clamping cylinder fixed to the outside of the end baffle and a clamping disc connected to the end baffle by a piston rod inside the clamping cylinder.

[0010] Preferably, the slide groove has protruding grooves at both ends; The receiving seat assembly includes a slide seat that slides in a slide groove, a top cover fixed at the upper end of the slide seat by several sets of columns, two rows of receiving wheels connected to the upper end of the top cover by an L-shaped seat, and an H-shaped frame that extends through the two ends of the slide seat and is fixed thereafter. The bottom of the slide block is fixed to the top of the return spring; The H-shaped frame has toothed grooves on both sides.

[0011] Preferably, the baffle assembly includes a side baffle, connecting shafts disposed on both sides of the bottom of the side baffle, and triangular guide seats disposed at equal intervals on the inner wall of the side baffle; The gear drive component includes small gears fixed after extending out of the slag discharge chamber at both ends of the slag discharge auger and large gears fixed after extending out of the receiving box from the connecting shaft. The large gear meshes directly above the corresponding small gear, and the large gear meshes in the tooth groove.

[0012] Preferably, the upper end of the grinding machine base is provided with a first guide rail, the movable base is slidably connected to the first guide rail, the upper end of the movable base is provided with a second guide rail, and the movable box is slidably connected to the second guide rail.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention achieves adaptive fine-tuning of the workpiece by using the receiving seat assembly in conjunction with the reset spring, eliminating workpiece damage caused by rigid grinding, and achieving precise positioning by using the end clamping assembly, effectively improving the processing accuracy.

[0014] The baffle assembly can open and close in conjunction with the processing status. When open, it will not obstruct the feeding of the shaft to be processed and will help the shaft to be processed to automatically roll between the two rows of receiving wheels at the top of the receiving seat assembly. When closed, it will shield the processing area, prevent debris from flying, and improve the safety of operation.

[0015] By relying on the gear drive component to link the slag discharge auger and the baffle assembly, the processing, protection and slag discharge are synchronized. The waste slag coolant can be quickly filtered and discharged through the slag discharge chamber and temporary storage tank to avoid the accumulation of impurities. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure from another perspective; Figure 3 This is an exploded structural diagram of the assembly of the stand, lifting component and grinding wheel of the present invention; Figure 4 This is a three-dimensional structural diagram of the assembled stand, lifting assembly, grinding wheel, and coolant nozzle of the present invention. Figure 5 This is an exploded structural diagram of the assembly of the mobile box, receiving box, side baffle and receiving seat of the present invention. Figure 6 This is a schematic diagram of the slag discharge auger assembly of the present invention; Figure 7 This is a schematic diagram of the assembly of the receiving box and the end clamping assembly of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the cross-sectional structure; Figure 9 This is a three-dimensional structural schematic diagram of the baffle assembly of the present invention; Figure 10 This is a three-dimensional structural diagram of the receiving seat assembly of the present invention; Figure 11 For the present invention Figure 10 A schematic diagram of the three-dimensional structure from another perspective; Figure 12This is a three-dimensional structural diagram of the assembly of the mobile box and the receiving box of the present invention; Figure 13 This is a schematic diagram showing the connection between the baffle assembly, the receiving seat assembly, the slag discharge auger, and the gear drive component of the present invention. Figure 14 For the present invention Figure 12 A schematic diagram of the cross-sectional structure; Figure 15 This is a three-dimensional structural diagram of the shaft to be processed after clamping, according to the present invention. Figure 16 For the present invention Figure 15 A partial cross-sectional structural diagram.

[0017] In the diagram: 1. Grinding machine base; 2. First guide rail; 3. Moving base; 4. Second guide rail; 5. Moving box; 6. Receiving box; 7. Side baffle; 8. Clamping cylinder; 9. Stand; 10. Grinding wheel; 11. Receiving seat assembly; 1101. Top cover; 1102. Slide; 1103. L-shaped seat; 1104. Receiving wheel; 1105. H-shaped frame; 1106. Gear groove; 1107. Column; 12. Clamping plate; 13. Filter screen; 14. Drain pipe; 15. Lead screw; 16. Polishing rod; 17. Upper inner groove; 18. Lifting motor; 19. Lower inner groove; 20. Lower grid 21. Grid plate; 22. Top cover plate; 23. Vertical slot; 24. Lifting seat; 25. L-shaped frame; 26. Grinding motor; 27. Motor protective cover; 28. Protective cover; 29. ​​Shaft to be processed; 30. Coolant nozzle; 31. Temporary storage tank; 32. Slag discharge tank; 33. Small gear; 34. Bottom cavity; 35. Slag discharge auger; 36. Receiving tank; 37. End baffle; 38. Slag leakage tank; 39. Protrusion seat; 40. Slide groove; 41. Fixed ear plate; 42. Extension slot; 43. Triangular guide seat; 44. Large gear; 45. Connecting shaft; 46. Top cavity. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example: Please see Figures 1-16 The present invention provides a technical solution: A CNC surface grinder for shaft machining includes a grinder base 1, and a grinding wheel 10 and a coolant nozzle 29 are connected to a vertical stand 9 at the rear of the grinder base 1 by a lifting assembly. The side of the stand 9 is provided with an upper inner groove 17 and a lower inner groove 19. The lifting assembly includes a lifting motor 18 installed in the lower inner groove 19, a lead screw 15 provided in the upper inner groove 17, and a lifting seat 23 slidably connected in the upper inner groove 17. The upper inner groove 17 has light rods 16 that pass through the lifting seat 23 on both sides, and the bottom of the lead screw 15 is connected to the output end of the lifting motor 18.

[0020] The upper inner groove 17 and the lower inner groove 19 are sealed by the upper cover plate 21 and the lower grid plate 20 respectively. The front end of the lifting seat 23 is provided with an L-shaped frame 24, which extends through the vertical groove 22 on the upper cover plate 21. A grinding motor 25 is installed on one side of the end of the L-shaped frame 24. The output end of the grinding motor 25 passes through the L-shaped frame 24 and is connected and fixed to the grinding wheel 10. A protective cover 27 covering the upper outer side of the grinding wheel 10 is also fixed on the other side of the end of the L-shaped frame 24. A coolant nozzle 29 is installed on the protective cover 27. The L-shaped frame 24 also has a motor protective cover 26 fixed at its end, which covers the outside of the grinding motor 25.

[0021] The upper end of the grinding machine base 1 is provided with a movable base 3 that can move back and forth. The upper end of the movable base 3 is provided with a movable box 5 that can move left and right. The upper end of the movable box 5 is fixed with a receiving box 6. Two sets of slag discharge chambers are formed between the movable box 5 and the receiving box 6. One end of the slag discharge chamber is connected to the temporary storage groove 30 on the side of the movable box 5. The fixing lug 41 at the bottom of the receiving box 6 is fixed to the upper end of the moving box 5 by bolts; The slag discharge chamber includes two sets of bottom chambers 33 at the top of the movable box 5 and two sets of top chambers 46 at the bottom of the receiving box 6. The top chambers 46 are sealed on the top of the corresponding bottom chambers 33 to form the slag discharge chamber. The slag leakage trough 37 is located at the top of the corresponding top cavity 46.

[0022] A slag discharge trough 31 is provided at one end of the bottom cavity 33, and a filter screen 13 is provided at the upper part of the temporary storage tank 30. The height of the filter screen 13 is lower than that of the slag discharge trough 31. The side of the mobile box 5 is provided with a drain pipe 14 that is connected to the temporary storage tank 30.

[0023] The slag discharge chamber is equipped with a slag discharge auger 34. The slag leakage groove 37 at the top of the slag discharge chamber is connected to the receiving groove 35 inside the receiving box 6. The receiving groove 35 is equipped with a boss 38 in the middle. The sliding groove 40 of the boss 38 is equipped with a receiving seat assembly 11 for placing the rotating shaft 28 to be processed. The bottom of the receiving seat assembly 11 is fixed on the return spring 39 in the sliding groove 40. The two ends of the receiving groove 35 are equipped with end clamping assemblies. The end clamping assemblies are used to clamp the rotating shaft 28 to be processed from both ends. The receiving groove 35 is rotatably connected with baffle assemblies distributed in front and behind. The receiving seat assembly 11 extends out of the receiving groove 35 at both ends and is driven by gear drive components to connect with the baffle assembly and the slag discharge auger 34.

[0024] The receiving groove 35 has end baffles 36 at both ends. The end clamping assembly includes a clamping cylinder 8 fixed to the outside of the end baffle 36 and a clamping disc 12 connected to the piston rod inside the clamping cylinder 8 after passing through the end baffle 36.

[0025] The two ends of the chute 40 are provided with protruding grooves 42; The receiving seat assembly 11 includes a slide seat 1102 that slides in the slide groove 40, a top cover 1101 fixed at the upper end of the slide seat 1102 by a number of sets of columns 1107, two rows of receiving wheels 1104 that are movably connected at the upper end of the top cover 1101 by L-shaped seats 1103, and an H-shaped frame 1105 that extends through the two ends of the slide seat 1102 and is fixed after being extended through the extension groove 42. The bottom of the slide 1102 is fixed to the top of the return spring 39; The H-shaped frame 1105 has toothed grooves 1106 on both sides.

[0026] The baffle assembly includes a side baffle 7, connecting shafts 45 arranged on both sides of the bottom of the side baffle 7, and triangular guide seats 43 evenly spaced on the inner wall of the side baffle 7; The gear drive components include small gears 32 fixed after both ends of the slag discharge auger 34 extend out of the slag discharge chamber and large gears 44 fixed after the connecting shaft 45 extends out of the receiving box 6. The large gear 44 meshes directly above the corresponding small gear 32, and the large gear 44 meshes with the tooth groove 1106.

[0027] The upper end of the grinding machine base 1 is provided with a first guide rail 2, the movable base 3 is slidably connected to the first guide rail 2, the upper end of the movable base 3 is provided with a second guide rail 4, and the movable box 5 is slidably connected to the second guide rail 4.

[0028] Specifically, when using it: This CNC surface grinder for shaft machining relies on a multi-dimensional displacement adjustment structure, an adaptive clamping and positioning structure, and a linked grinding and slag removal structure to achieve automated grinding of shaft workpieces. Simultaneously, it completes grinding slag collection, removal, and equipment protection operations. The overall operation is seamless and highly automated. The specific workflow is as follows: In the standby state, all structures are in the initial reset state. The receiving seat assembly 11 is lifted up by the reset spring 39, and the front and rear side baffles 7 of the baffle assembly are in the top open state (e.g., Figure 14 As shown), the end clamping assembly is in the loosened state, and the grinding wheel 10 is in the high standby position.

[0029] During processing, the shaft to be processed 28 is first rolled down the open side baffle 7, and then the shaft to be processed 28 continues to roll down the triangular guide seat 43. Due to the limiting effect of the front and rear side baffles 7, the shaft to be processed 28 will eventually fall to the bottom between the front and rear side baffles 7 under its own gravity, until the shaft to be processed 28 sits on the receiving wheel 1104 of the receiving seat assembly 11. Under the gravity of the shaft 28 to be processed, the receiving seat assembly 11 moves downward, causing the return spring 39 to be in a compressed state. The toothed groove 1106 of the H-shaped frame 1105 drives the large gear 44 to rotate, causing the front and rear side baffles 7 of the baffle assembly to be in a state where the top tends to be relatively closed (e.g., Figure 15 and Figure 16 As shown), at the same time, the large gear 44 drives the slag discharge auger 34 to rotate rapidly through the small gear 32, so that the slag discharge auger 34 discharges the debris and coolant in the slag discharge chamber into the temporary storage tank 30 through the slag discharge trough 31. The debris is filtered through the filter screen 13, and the coolant enters the temporary storage tank 30 and is discharged through the drain pipe 14.

[0030] Subsequently, the end clamping assembly is activated, and the clamping cylinder 8 drives the piston rod to precisely clamp the clamping plate 12 from both ends of the shaft 28 to be processed, completing the axial positioning and clamping of the shaft 28 to be processed, preventing workpiece displacement and movement during the grinding process, and ensuring processing accuracy.

[0031] After the spindle 28 to be machined is clamped, the CNC system controls the movement of the equipment's displacement structure: The movable base 3 slides back and forth along the first guide rail 2 at the upper end of the grinding machine base 1, and the movable box 5 slides left and right on the upper end of the movable base 3 based on the second guide rail 4, driving the receiving box 6 and the rotating shaft 28 to be processed to achieve two-dimensional horizontal displacement in front and back and left and right, accurately adjusting the horizontal relative position of the workpiece and the grinding wheel 10 to match different grinding point requirements.

[0032] After the horizontal position is adjusted, the lifting assembly is started. The lifting motor 18 drives the lead screw 15 to rotate, which drives the lifting seat 23 to rise and fall vertically along the guide rod 16. Then, through the L-shaped frame 24, the grinding motor 25 and the grinding wheel 10 move vertically downward until the grinding wheel 10 is in contact with the surface of the rotating shaft 28 to be processed.

[0033] Subsequently, the grinding motor 25 drives the grinding wheel 10 to rotate at high speed, while the coolant nozzle 29 sprays coolant synchronously to cool, reduce dust, and lubricate the grinding area, thus starting the grinding operation of the shaft workpiece surface.

[0034] During the process, the end clamping assembly can be activated, the clamping plate 12 can be reset and disengaged from the clamping of both ends of the shaft 28 to be processed. At this time, under the elastic force of the return spring 39 on the support assembly 11, the shaft 28 to be processed at the upper end of the support assembly 11 is always against the bottom of the grinding wheel 10, realizing the adaptive fine-tuning fit of the shaft 28 to be processed, avoiding workpiece wear and chipping caused by rigid grinding. Then, the clamping plate 12 is immediately driven to clamp both ends of the shaft 28 to be processed again.

[0035] The side baffle 7 flips to a relatively closed state, which, in conjunction with the grinding progress, shields and protects the processing area to prevent debris from splashing. The coolant and the debris generated during grinding fall through the top cover 1101 to the receiving groove 35, and then fall from the slag discharge groove 37 into the front and rear slag discharge chambers. The rotating slag discharge auger 34 pushes the slag discharge groove 31 to the slag discharge groove, and finally into the temporary storage groove 30.

[0036] After the single-station grinding is completed, the lifting component drives the grinding wheel 10 to reset and lift, the clamping cylinder 8 drives the piston rod to drive the clamping plate 12 to retract, disengage from both ends of the shaft to be processed 28, and take out the shaft to be processed 28; The receiving seat assembly 11 is reset upward under the elastic force of the reset spring 39, and simultaneously drives the slag discharge auger 34 and the baffle assembly to reset through the gear drive component, thus completing a single shaft grinding process. The above process can be repeated to realize continuous processing of batch workpieces.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC surface grinder for shaft machining, comprising a grinder base (1), characterized in that: The grinding wheel (10) and coolant nozzle (29) are connected to the stand (9) at the rear of the grinding machine base (1) by a lifting assembly. The upper end of the grinding machine base (1) is provided with a movable base (3) that can move back and forth. The upper end of the movable base (3) is provided with a movable box (5) that can move left and right. The upper end of the movable box (5) is fixed with a receiving box (6). Two sets of slag discharge chambers are formed between the movable box (5) and the receiving box (6). One end of the slag discharge chamber is connected to the temporary storage groove (30) on the side of the movable box (5). The slag discharge chamber is provided with a slag discharge auger (34). The slag leakage groove (37) at the top of the slag discharge chamber is connected to the receiving groove (35) inside the receiving box (6). The receiving groove (35) is provided with a boss (38) in the middle. The sliding groove (40) of the boss (38) is provided with a receiving seat assembly (11) for placing the rotating shaft (28) to be processed. The bottom of the receiving seat assembly (11) is fixed on the return spring (39) in the sliding groove (40). The two ends of the receiving groove (35) are provided with end clamping assemblies. The end clamping assemblies are used to clamp the rotating shaft (28) to be processed from both ends. The receiving groove (35) is internally rotatably connected to a front and rear distributed baffle assembly. The receiving seat assembly (11) extends out of the receiving groove (35) at both ends and is driven by a gear drive to connect with the baffle assembly and the slag discharge auger (34).

2. The CNC surface grinder for shaft machining according to claim 1, characterized in that: The stand (9) has an upper inner groove (17) and a lower inner groove (19) on its side. The lifting assembly includes a lifting motor (18) installed in the lower inner groove (19), a lead screw (15) installed in the upper inner groove (17), and a lifting seat (23) slidably connected to the upper inner groove (17). The upper inner groove (17) has light rods (16) that pass through the lifting seat (23) on both sides, and the bottom of the lead screw (15) is connected to the output end of the lifting motor (18).

3. The CNC surface grinder for shaft machining according to claim 2, characterized in that: The upper inner groove (17) and the lower inner groove (19) are sealed by the upper cover plate (21) and the lower grid plate (20) respectively. The front end of the lifting seat (23) is provided with an L-shaped frame (24), which extends through the vertical groove (22) on the upper cover plate (21). A grinding motor (25) is installed on one side of the end of the L-shaped frame (24). The output end of the grinding motor (25) passes through the L-shaped frame (24) and is connected and fixed to the grinding wheel (10). A protective cover (27) covering the upper outer side of the grinding wheel (10) is also fixed on the other side of the end of the L-shaped frame (24). The coolant nozzle (29) is installed on the protective cover (27). The L-shaped frame (24) is also fixed with a motor protective cover (26) covering the outside of the grinding motor (25).

4. A CNC surface grinder for shaft machining according to claim 1, characterized in that: The fixed ear plate (41) at the bottom of the receiving box (6) is fixed to the upper end of the moving box (5) by bolts; The slag discharge chamber includes two sets of bottom chambers (33) at the top of the movable box (5) and two sets of top chambers (46) at the bottom of the receiving box (6). The top chambers (46) are sealed on the top of the corresponding bottom chambers (33) to form the slag discharge chamber. The slag trough (37) is located at the top of the corresponding top cavity (46).

5. A CNC surface grinder for shaft machining according to claim 4, characterized in that: The bottom cavity (33) is provided with a slag discharge trough (31) at one end, and a filter screen (13) is provided at the upper part of the temporary storage tank (30). The height of the filter screen (13) is lower than that of the slag discharge trough (31). The side of the mobile box (5) is provided with a drain pipe (14) that communicates with the temporary storage tank (30).

6. A CNC surface grinder for shaft machining according to claim 1, characterized in that: The receiving groove (35) has end baffles (36) at both ends. The end clamping assembly includes a clamping cylinder (8) fixed on the outside of the end baffle (36) and a clamping plate (12) connected to the piston rod inside the clamping cylinder (8) after passing through the end baffle (36).

7. A CNC surface grinder for shaft machining according to claim 1, characterized in that: The slide (40) has protruding grooves (42) at both ends; The receiving seat assembly (11) includes a slide seat (1102) that slides in the slide groove (40), a top cover (1101) fixed at the upper end of the slide seat (1102) by a number of sets of columns (1107), two rows of receiving wheels (1104) that are movably connected at the upper end of the top cover (1101) by an L-shaped seat (1103), and an H-shaped frame (1105) that extends through the two ends of the slide seat (1102) and is fixed thereafter. The bottom of the slide (1102) is fixed to the top of the return spring (39); The H-shaped frame (1105) has toothed grooves (1106) on both sides.

8. A CNC surface grinder for shaft machining according to claim 7, characterized in that: The baffle assembly includes a side baffle (7), connecting shafts (45) provided on both sides of the bottom of the side baffle (7), and triangular guide seats (43) provided at equal intervals on the inner wall of the side baffle (7). The gear drive component includes small gears (32) fixed after both ends of the slag discharge auger (34) extend out of the slag discharge chamber and large gears (44) fixed after the connecting shaft (45) extends out of the receiving box (6). The large gear (44) meshes directly above the corresponding small gear (32), and the large gear (44) meshes with the tooth groove (1106).

9. A CNC surface grinder for shaft machining according to claim 1, characterized in that: The upper end of the grinding machine base (1) is provided with a first guide rail (2), the movable base (3) is slidably connected to the first guide rail (2), the upper end of the movable base (3) is provided with a second guide rail (4), and the movable box (5) is slidably connected to the second guide rail (4).

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