High-precision numerical control universal grinding machine

Abstract

The invention relates to the technical field of universal grinding machines, and discloses a high-precision numerical control universal grinding machine which comprises a main machine body and a working table, a feeding mechanism is arranged at the top of the working table, and the feeding mechanism comprises a movable base which is installed at the top of the working table in a sliding mode; the storage assembly is fixedly connected to the top of the movable base, and the storage assembly is used for storing to-be-polished rod workpieces; through cooperative use of the material storage assembly and the material clamping wheel, continuous feeding and grinding work of workpieces is facilitated, so that the working efficiency of workpiece outer circle grinding is effectively improved, meanwhile, the material clamping wheel plays a middle supporting role in the workpiece grinding process, the workpieces are prevented from being deformed in the grinding process, and the grinding quality of the workpieces is improved. The workpiece grinding stability and safety are effectively guaranteed, the workpiece grinding precision and grinding quality are guaranteed, the whole grinding feeding and grinding process is continuous, operation is easy, and the work efficiency of workpiece grinding is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of universal grinders, in particular to a high-precision CNC universal grinder. Background Art

[0002] The grinding machine is used to grind the outer cylindrical surface, inner cylindrical surface and end face of the workpiece, so that the surface roughness of the workpiece after grinding can meet the use requirements of the workpiece.

[0003] In a Chinese patent with patent publication number CN118123657B, an ultra-precision CNC universal grinding machine is disclosed, including a granite bed, a first high-precision linear rail groove and a second high-precision linear rail groove are symmetrically opened on the top surface of the granite bed, a fiber optic refractive index sensor mounting base is installed on the left and right ends of the side of the granite bed, a multi-point clamping adjustment component is connected to the surface of the fiber optic refractive index sensor mounting base through an electric rail groove sliding connection, a short-precision linear rail is opened on the top wall surface of the granite bed, the short-precision linear rail is located on the inner side of the second high-precision linear rail groove, the interior of the short-precision linear rail is slidably connected to a bottom clamping adjustment structure, and the multi-point clamping adjustment component and the bottom clamping adjustment structure have the same structure.

[0004] The above invention ensures that the surface of the object is not damaged during clamping by coordinating the multi-point clamping adjustment component and the bottom clamping adjustment structure, so that the bottom clamping adjustment structure can slide and adjust inside the short precision linear rail to complete the multi-point clamping of the bottom end of the workpiece, effectively avoiding deformation of the workpiece under the action of the grinding force caused by clamping at only one end, and improving the stability of the grinding process. Although it can ensure the stability of the workpiece during grinding and avoid deformation of the workpiece, in actual operation, the workpiece installation process is complicated and only a single workpiece can be polished at a time, resulting in reduced workpiece grinding efficiency. In addition, when grinding the side edges of the workpiece end and the entire outer ring, the operation process is cumbersome, resulting in a further reduction in workpiece grinding efficiency. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-precision CNC universal grinding machine, which has the advantages of ensuring batch grinding of workpieces, ensuring the stability of workpiece grinding, and improving the overall work efficiency of workpiece grinding.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-precision CNC universal grinding machine includes a main bed and a workbench. A loading mechanism is provided on the top of the workbench. The loading mechanism includes: A movable base is slidably mounted on the top of the workbench; A material storage component is fixedly connected to the top of the movable base and is used to store the rod workpiece to be polished; A clamping wheel is movably connected to the top of the movable base and is used to clamp the rod workpiece being ground; The driving mechanism is arranged above the movable base and is used for intermittently driving the clamping wheel to rotate.

[0007] Preferably: the top of the workbench is slidably connected with a headstock and a tailstock, the headstock and the tailstock are located on both sides of the loading mechanism, and a grinding seat and a material receiving platform are set on the top of the main bed. The grinding seat is used for grinding the outer circle of the rod workpiece, and the material receiving platform is used for receiving the polished rod workpiece.

[0008] Preferably: the storage assembly includes a storage box, the storage box is fixedly connected to the top of the movable base, the bottom of the storage box is fixedly connected to a discharge base plate, the outside of the discharge base plate is plugged with a discharge guide rod, and the discharge guide rod and the discharge base plate are elastically connected.

[0009] Preferably: the clamping wheel includes a fixed frame fixedly connected to the top of the movable base, a center column is provided in the center of the fixed frame, an inner core block is movably connected to the outside of the fixed frame, the inner core block and the center column are rotatably connected, the outer part of the inner core block is rotatably connected to a rotating clamp, a fixed ring for limiting is provided between the inner core block and the rotating clamp, and the rotating clamp and the fixed ring are connected by a plane bearing.

[0010] Preferably: the outside of the storage box is fixedly connected to a mounting plate, the driving mechanism includes a driving motor fixedly connected to the top of the mounting plate, and also includes a driving shaft rotatably connected to the inside of the fixed frame, the driving shaft extends to the outer end of the fixed frame and is fixedly connected to a driving wheel, a transmission belt is provided between the driving wheel and the driving motor, the shaft portion of the center column is rotatably connected to a driven shaft, a bevel gear set for transmission connection is provided between the driving shaft and the driven shaft, the outer end of the driven shaft is fixedly connected to the driving wheel, the inner side surface of the rotating fixture is fixedly connected to a driven gear ring, and the driven gear ring is meshed with the driving wheel.

[0011] Preferably: the outer side surface of the center column is fixedly connected to a driving block, the inner core block is fixedly connected to an adjusting driving rod, the output end of the adjusting driving rod is fixedly connected to the driving block, and the adjusting driving rod is used to adjust the deflection angle of the inner core block and the center column.

[0012] Preferably, the rotary clamp comprises a plurality of clamping teeth, two symmetrical oblique guide grooves are provided on the outside of the clamping teeth, the clamping surfaces of the clamping teeth are rotatably connected to a buffer wheel, and when the clamping teeth clamp the rod workpiece, the outer side surface of the rod workpiece protrudes to the outside of the clamping wheel.

[0013] Preferably: the bottom of the mounting plate is rotatably connected to a material blocking rod, the bottom surface of the material blocking rod is set to an arc shape, the bottom surface of the material blocking rod and the axis of the clamping wheel are collinear, the bottom surface of the material blocking rod is attached to the outside of the clamping wheel, and a material spacing assembly is provided between the clamping wheel and the material storage assembly, and the material spacing assembly is used to control the loading of the rod workpiece.

[0014] Preferably: the material spacer assembly includes a fixed rod fixedly connected to the bottom of the mounting plate, the bottom of the fixed rod is movably connected to the material spacer rod, an outer cavity is opened inside the fixed rod, an inner cavity is opened inside the material spacer rod, the inner cavity is movably connected to the oil pump rod, the oil pump rod is fixedly connected to the bottom of the mounting plate, and the oil pump rod is used to control the material spacer rod to move up and down at the bottom of the fixed rod.

[0015] Preferably: the outside of the fixed rod is fixedly connected to a positioning drive rod, the positioning drive rod is communicated with the outer cavity, the output end of the positioning drive rod is fixedly connected to a telescopic rod, the bottom of the telescopic rod is hinged with a pressing ring, the outside of the pressing ring is fixedly connected to a positioning slider, and the positioning slider is slidably connected to the blocking rod.

[0016] Beneficial effects of the present invention: 1. This high-precision CNC universal grinder, through the coordinated use of the material storage component and the clamping wheel, facilitates the continuous loading and grinding of the workpiece, thereby effectively improving the work efficiency of the workpiece outer circle grinding. At the same time, the clamping wheel plays a central supporting role in the workpiece grinding process, thereby preventing the workpiece from being deformed during the grinding process, effectively ensuring the stability and safety of the workpiece grinding, and ensuring the accuracy and grinding quality of the workpiece. The overall grinding, loading and grinding process is continuous and simple to operate, further improving the work efficiency of the workpiece grinding.

[0017] 2. This high-precision CNC universal grinder, through the cooperation of the rotary fixture and the material stop rod, completes the positioning of the workpiece through the material slot of the rotary fixture, prevents the workpiece from falling during the transportation process, ensures the stability of the workpiece during the material transfer process, and is simple as a whole and stable in operation, effectively ensuring the continuity and stability of the workpiece transfer process, thereby ensuring the work efficiency of the workpiece grinding process.

[0018] 3. This high-precision CNC universal grinder controls the tilt and deflection of the rotating fixture to make the rod workpiece tilted relative to the grinding wheel of the grinding seat, making it easier for the grinding seat to grind the end side of the rod workpiece, thereby completing the side grinding of the end face of the rod workpiece, effectively ensuring the flexibility and diversity of workpiece grinding, facilitating the simultaneous end side grinding and outer circle grinding, effectively ensuring the work efficiency of workpiece grinding, and improving the work quality and work effect of workpiece grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall back view of the present invention; Figure 2This is a schematic diagram of the overall front view of the present invention; Figure 3 Schematic diagram of the feeding mechanism of the present invention; Figure 4 Schematic diagram of the clamping wheel of the present invention; Figure 5 This is a schematic diagram of the disassembled state of the clamping wheel of the present invention; Figure 6 This is a schematic diagram of a first cross-sectional view of the clamping wheel of the present invention; Figure 7 This is a schematic diagram of the second cross-sectional state of the clamping wheel of the present invention; Figure 8 For the present invention Figure 3 A magnified schematic diagram of area A; Figure 9 For the present invention Figure 6 A magnified schematic diagram of area B; Figure 10 This is a schematic diagram of the spacer assembly of the present invention; Figure 11 Schematic diagram of the material storage assembly of the present invention.

[0020] In the figure: 1. Main bed; 2. Workbench; 3. Headstock; 4. Tailstock; 5. Grinding seat; 6. Material receiving platform; 7. Loading mechanism; 71. Movable base; 72. Material storage assembly; 73. Material clamping wheel; 74. Mounting plate; 75. Material blocking rod; 76. Material spacer assembly; 77. Driving mechanism; 721, storage box; 722, unloading bottom plate; 723, unloading guide rod; 731, fixed frame; 732, inner core block; 733, rotating fixture; 7311, center column; 734, fixing ring; 735, driving block; 736, adjusting driving rod; 7331, clamping teeth; 7332, inclined guide groove; 7333, buffer wheel; 761, fixed rod; 762, spacer rod; 763, inner cavity; 764, outer cavity; 765, pump rod; 766, positioning drive rod; 767, telescopic rod; 768, press ring; 769, positioning slide; 771. Driving motor; 772. Driving wheel; 773. Driving shaft; 774. Driven shaft; 775. Bevel gear set; 776. Driving wheel; 777. Driven gear ring. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] Example 1, please refer to Figure 1 - Figure 11 A high-precision CNC universal grinding machine includes a main bed 1 and a workbench 2. A feeding mechanism 7 is provided on the top of the workbench 2. The feeding mechanism 7 includes: A movable base 71 is slidably mounted on the top of the workbench 2; A material storage assembly 72 is fixedly connected to the top of the movable base 71 and is used to store the rod workpiece to be polished; A clamping wheel 73 is movably connected to the top of the movable base 71 and is used to clamp the rod workpiece being ground; The driving mechanism 77 is disposed above the movable base 71 and is used for intermittently driving the clamping wheel 73 to rotate.

[0023] The top of the workbench 2 is slidably connected with a headstock 3 and a tailstock 4, which are located on both sides of the loading mechanism 7. A grinding seat 5 and a material receiving platform 6 are set on the top of the main bed body 1. The grinding seat 5 is used for grinding the outer circle of the rod workpiece, and the material receiving platform 6 is used for receiving the polished rod workpiece.

[0024] It should be noted that the grinding seat 5 includes a grinding wheel and a grinding wheel drive, and the headstock 3 and the tailstock 4 are used to clamp the rod workpiece to be ground. The ground rod workpiece is sent to the receiving table 6 and then enters the output device to complete the grinding of the rod workpiece.

[0025] Specifically, during the grinding process, several rod workpieces to be ground are placed inside the storage assembly 72. During the grinding process, the rod workpieces flow out of the storage assembly 72 and enter the clamping wheel 73. The driving mechanism 77 drives the clamping wheel 73 to rotate. The clamping wheel 73 drives the workpiece to enter between the headstock 3 and the tailstock 4. The headstock 3 and the tailstock 4 clamp and fix the rod workpiece. The headstock 3 drives the workpiece to rotate. At the same time, the grinding seat 5 feeds so that the grinding wheel contacts the surface of the workpiece to start grinding. After grinding is completed, the workpiece enters the material receiving table 6 area and unloading is completed. After unloading is completed, the movable base 71 is controlled to reset and a new round of workpiece grinding is carried out.

[0026] By cooperating with the storage assembly 72 and the clamping wheel 73, continuous loading and grinding of the workpiece are facilitated, thereby effectively improving the work efficiency of grinding the outer circle of the workpiece. At the same time, the clamping wheel 73 plays a central supporting role in the grinding process of the workpiece, thereby avoiding deformation of the workpiece during the grinding process, effectively ensuring the stability and safety of the workpiece grinding, and ensuring the accuracy and quality of the workpiece grinding. The overall grinding, loading and grinding process is continuous and simple to operate, further improving the work efficiency of the workpiece grinding.

[0027] Example 2, reference Figure 3 and Figure 11 , further on the basis of embodiment 1, the storage assembly 72 includes a storage box 721, the storage box 721 is fixedly connected to the top of the movable base 71, the bottom of the storage box 721 is fixedly connected to the unloading base 722, the outside of the unloading base 722 is plugged with a unloading guide rod 723, and the unloading guide rod 723 and the unloading base 722 are elastically connected.

[0028] It should be noted that there are two groups of unloading guide rods 723, and the unloading guide rods 723 and the unloading base plate 722 are provided with return springs, which maintain the elastic connection between the unloading guide rods 723 and the unloading base plate 722 through the return springs, and the return springs are used to maintain the outward sliding tendency of the unloading guide rods 723 so that the ends of the unloading guide rods 723 fit the clamping wheel 73.

[0029] The unloading guide rod 723 and the unloading bottom plate 722 are both tilted on the top surface, tilting downward from high to low along the storage box 721 toward the clamping wheel 73, so that the rod workpiece can roll into the clamping wheel 73 position under the action of vibration and gravity.

[0030] refer to Figure 4-Figure 7 In an optional embodiment, the clamping wheel 73 includes a fixed frame 731 fixedly connected to the top of the movable base 71, a center column 7311 is provided at the center of the fixed frame 731, an inner core block 732 is movably connected to the outside of the fixed frame 731, the inner core block 732 and the center column 7311 are rotatably connected, the outer rotation of the inner core block 732 is connected to a rotating clamp 733, a fixed ring 734 for limiting is provided between the inner core block 732 and the rotating clamp 733, and the rotating clamp 733 and the fixed ring 734 are connected by a plane bearing.

[0031] It should be noted that the outer ring of the rotating fixture 733 is provided with a plurality of clamping grooves, and the workpiece is positioned through the clamping grooves.

[0032] It should be noted that the inner core block 732 is set as a support member of the rotating fixture 733. The inner core block 732 is used to support and position the rotating fixture 733. The rotating fixture 733 rotates outside the inner core block 732. The inner core block 732 and the fixed frame 731 are movably connected.

[0033] The fixing ring 734 is used to maintain a stable connection between the inner core block 732 and the rotating fixture 733 , thereby ensuring the stability of the rotating fixture 733 during rotation.

[0034] The inner core block 732 includes a central support block and positioning blocks on both sides, which are connected by bolts to facilitate the disassembly, assembly and maintenance of the clamping wheel 73.

[0035] refer to Figure 3 and Figure 10 In an optional embodiment, the bottom of the mounting plate 74 is rotatably connected to a material blocking rod 75, the bottom surface of the material blocking rod 75 is set to an arc shape, the bottom surface of the material blocking rod 75 and the axis of the clamping wheel 73 are colinear, the bottom surface of the material blocking rod 75 is attached to the outside of the clamping wheel 73, and a material spacing assembly 76 is provided between the clamping wheel 73 and the material storage assembly 72, and the material spacing assembly 76 is used to control the loading of the rod workpiece.

[0036] It should be noted that the material blocking rod 75 is attached to the outside of the rotating clamp 733. The material blocking rod 75 cooperates with the clamping groove of the rotating clamp 733 to complete the positioning of the workpiece, preventing the workpiece from falling during the transportation process, ensuring the stability of the workpiece during the material transfer process, and the overall simplicity and stable operation effectively ensure the continuity and stability of the workpiece transfer process, thereby ensuring the work efficiency of the workpiece grinding machine processing.

[0037] It should be noted that the spacer assembly 76 is used to control the stability of the workpiece entering the rotating fixture 733, so that the workpiece can enter the outside of the rotating fixture 733 individually and continuously, effectively avoiding the stacking and jamming of the workpiece when entering the rotating fixture 733, thereby ensuring that the rotating fixture 733 can operate stably, and the workpiece can enter the jamming slot of the rotating fixture 733 one by one, effectively avoiding the influence of other workpieces during loading, ensuring the stability of the overall workpiece loading and transfer, and thus ensuring the work efficiency of workpiece grinding.

[0038] refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 9 In an optional embodiment, the outside of the storage box 721 is fixedly connected to the mounting plate 74, and the driving mechanism 77 includes a driving motor 771 fixedly connected to the top of the mounting plate 74, and also includes a driving shaft 773 rotatably connected to the inside of the fixed frame 731, and the driving shaft 773 extends to the outer end of the fixed frame 731 and is fixedly connected to a driving wheel 772, and a transmission belt is provided between the driving wheel 772 and the driving motor 771, and the shaft portion of the center column 7311 is rotatably connected to a driven shaft 774, and a bevel gear set 775 for transmission connection is provided between the driving shaft 773 and the driven shaft 774, and the outer end of the driven shaft 774 is fixedly connected to a driving wheel 776, and the inner side surface of the rotating fixture 733 is fixedly connected to a driven gear ring 777, and the driven gear ring 777 and the driving wheel 776 are meshed and connected.

[0039] It should be noted that the driving wheel 772 and the movable base 71 are rotatably connected. During operation, the driving motor 771 drives the driving wheel 772 to rotate through the transmission belt, the driving wheel 772 drives the driving shaft 773 to rotate, the driving shaft 773 drives the driven shaft 774 to rotate through the bevel gear set 775, the driven shaft 774 drives the driving wheel 776 to rotate, and the driving wheel 776 drives the rotating clamp 733 to rotate through the driven gear ring 777, thereby completing the driving motor 771 driving the rotating clamp 733 to rotate.

[0040] It should be noted that the driving motor 771 is a servo motor, which is used to control the intermittent rotation of the rotary clamp 733, rotating one clamping slot amplitude each time, so that the workpiece can alternately enter between the headstock 3 and the tailstock 4.

[0041] Specifically, when the rod workpiece falls from the bottom of the storage box 721 to the unloading base plate 722, it enters the position of the rotating clamp 733 along the unloading base plate 722 and the unloading guide rod 723 under the action of gravity and vibration, and the workpiece enters the clamping groove of the rotating clamp 733. When the driving mechanism 77 drives the rotating clamp 733 to rotate, the rotating clamp 733 drives the workpiece to deflect upward until the workpiece enters between the headstock 3 and the tailstock 4.

[0042] The headstock 3 and the tailstock 4 are controlled to clamp and fix the workpiece, and the grinding seat 5 is controlled to complete the grinding of the workpiece.

[0043] Example 3, reference Figure 4-Figure 7 On the basis of the second embodiment, the outer side of the center column 7311 is fixedly connected to the driving block 735, and the interior of the inner core block 732 is fixedly connected to the adjusting driving rod 736. The output end of the adjusting driving rod 736 is fixedly connected to the driving block 735, and the adjusting driving rod 736 is used to adjust the deflection angle of the inner core block 732 and the center column 7311.

[0044] It should be noted that a regulating component is provided outside the regulating driving rod 736 , and the regulating component is installed on the top of the mounting plate 74 , and the regulating component is used to control the operation of the regulating driving rod 736 .

[0045] It should be noted that under the action of the adjusting drive rod 736, the inner core block 732 can rotate around the center column 7311, and the inner core block 732 drives the external rotating clamp 733 to rotate, so that the rotating clamp 733 is tilted relative to the grinding wheel of the grinding seat 5, and can keep the rotating clamp 733 rotating in an inclined state. The inclination angle of the rotating clamp 733 is controlled by the adjusting drive rod 736.

[0046] It should be noted that when the rotating fixture 733 deflects, the deflection axis is colinear with the axis of the driven shaft 774 . When the rotating fixture 733 completes the deflection, the driven gear ring 777 inside the rotating fixture 733 maintains the meshing state with the driving wheel 776 .

[0047] When the rotating fixture 733 is tilted, the rod workpiece is in an inclined state relative to the grinding wheel of the grinding seat 5, which makes it easier for the grinding seat 5 to grind the end side of the rod workpiece, and then complete the side grinding of the end face of the rod workpiece, effectively ensuring the flexibility and diversity of workpiece grinding, facilitating the simultaneous end side grinding and outer circle grinding, effectively ensuring the work efficiency of workpiece grinding, and improving the work quality and work effect of workpiece grinding.

[0048] Among them, the rotating clamp 733 includes a number of clamping teeth 7331, and two symmetrical inclined guide grooves 7332 are opened on the outside of the clamping teeth 7331. The clamping surface of the clamping teeth 7331 is rotatably connected to the buffer wheel 7333. When the clamping teeth 7331 clamp the rod workpiece, the outer side surface of the rod workpiece protrudes to the outside of the clamping wheel 73.

[0049] It should be noted that any two adjacent clamping teeth 7331 form a clamping groove, and the buffer wheels 7333 are distributed on both sides of the clamping groove. When the workpiece enters the clamping groove, the workpiece contacts the buffer wheels 7333 on both sides. The buffer wheels 7333 are used to support the workpiece to ensure the stability of the rotation during the workpiece grinding process, and are simultaneously used to support the workpiece being ground, reduce the friction on the workpiece, and avoid the friction between the workpiece and the support during the workpiece grinding process. The grinding quality is affected, thereby not only supporting the workpiece being ground and avoiding deformation of the workpiece during the grinding process, but also avoiding the influence of the support on the workpiece and the scratching of the workpiece by the support, thereby achieving the effect of protecting the workpiece being ground, effectively ensuring the stability and safety of the workpiece during the grinding process, and effectively improving the work efficiency and work quality of the workpiece grinding.

[0050] Example 4, reference Figure 3 、 Figure 8 and Figure 10 , further on the basis of Example 2, the material spacer assembly 76 includes a fixed rod 761 fixedly connected to the bottom of the mounting plate 74, the bottom of the fixed rod 761 is movably connected to the material spacer rod 762, the interior of the fixed rod 761 is provided with an outer cavity 764, the interior of the material spacer rod 762 is provided with an inner cavity 763, the interior of the inner cavity 763 is movably connected to the oil pump rod 765, the oil pump rod 765 is fixedly connected to the bottom of the mounting plate 74, and the oil pump rod 765 is used to control the material spacer rod 762 to move up and down at the bottom of the fixed rod 761.

[0051] It should be noted that the oil pump rod 765 divides the inner cavity 763 into upper and lower chambers, and controls the up and down movement of the spacer rod 762 through the oil volume in the upper and lower chambers. When the oil is controlled to enter the upper chamber, it drives the spacer rod 762 to move upward. When the oil is controlled to enter the lower chamber, it controls the spacer rod 762 to move downward.

[0052] It should be noted that the gap between the spacer rod 762 and the rotating fixture 733 can only accommodate one workpiece. When the spacer rod 762 moves downward, it pushes the excess workpieces to move outward, leaving only one workpiece on the outside of the rotating fixture 733, thereby ensuring the stability of the workpiece rotating fixture 733 in loading.

[0053] Specifically, during the workpiece grinding process, the spacer rod 762 is controlled to be located in the lower position to achieve the effect of isolating the workpiece and prevent the workpiece from piling up outside the rotating fixture 733. When the rotating fixture 733 is loading, the spacer rod 762 is controlled to move to the upper position. When passing a workpiece, the spacer rod 762 is then controlled to move downward to ensure the stability of the rotating fixture 733 loading.

[0054] Among them, the outside of the fixed rod 761 is fixedly connected to the positioning drive rod 766, the positioning drive rod 766 is connected to the outer cavity 764, the output end of the positioning drive rod 766 is fixedly connected to the telescopic rod 767, the bottom of the telescopic rod 767 is hinged with a pressing ring 768, the outside of the pressing ring 768 is fixedly connected to the positioning slider 769, and the positioning slider 769 is slidably connected to the blocking rod 75.

[0055] It should be noted that a regulating pump is provided outside the outer cavity 764 for independently controlling the oil inside the outer cavity 764 to achieve independent control of the positioning drive rod 766 .

[0056] It should be noted that when the outer circle of the workpiece is ground, the pressure ring 768 is offset toward the storage box 721. When the headstock 3 and the tailstock 4 clamp the workpiece, the pressure ring 768 is offset outward, and the pressure ring 768 has the effect of fixing the workpiece on the grinding side. When the headstock 3 and the tailstock 4 complete the fixation of the workpiece, the pressure ring 768 is controlled to be offset toward the storage box 721.

[0057] Furthermore, when the outer circle of the workpiece is ground, the slot of the outer rotating clamp 733 supports the workpiece, and at this time the loading position slot of the loading rotating clamp 733 clamps the workpiece, and at the same time the pressure ring 768 deflects to the position of the storage box 721. When the grinding is completed, the spacer rod 762 is controlled to move upward, and the spacer rod 762 squeezes the oil inside the outer cavity 764, so that the positioning drive rod 766 pushes the telescopic rod 767 to move outward, and the telescopic rod 767 drives the pressure ring 768 to slide outward, so that the pressure ring 768 can resume the fixation of the workpiece, and then the movable base 71 is controlled to move to the position of the material receiving platform 6.

[0058] When the movable base 71 moves to the position of the material receiving table 6, the rotating clamp 733 is controlled to rotate one slot position, and the workpiece that has been polished falls off to the material receiving table 6, and another workpiece to be polished enters the polishing area. At the same time, the material slot at the loading position moves one slot position, so that the workpiece in the slot enters the area of ​​the material blocking rod 75, and the position of the workpiece is kept stable by the material blocking rod 75.

[0059] After unloading, the movable base 71 is controlled to reset, the headstock 3 and the tailstock 4 are controlled to clamp the workpiece to be polished, and then the spacer rod 762 is controlled to move downward. Similarly, the pressure ring 768 is driven to deviate toward the material storage box 721, and the spacer rod 762 isolates a separate workpiece, so that the rod workpiece can stably enter the clamping groove of the rotating fixture 733.

[0060] By repeating the above work, the outer circle grinding of several workpieces can be completed, which is convenient for the continuous grinding of several workpieces and effectively ensures the grinding efficiency of the workpieces.

[0061] When the end side of the rod workpiece needs to be polished, the rotating fixture 733 can be controlled to tilt and deflect. At this time, the blocking rod 75 and the pressure ring 768 are deflected synchronously to ensure that the axes of the blocking rod 75, the pressure ring 768 and the rotating fixture 733 are collinear.

[0062] Furthermore, when the end side of the workpiece is ground, the pressure ring 768 is adjusted to always be in the role of squeezing and fixing the workpiece during the grinding process, and the other end of the workpiece away from the grinding is connected to the headstock 3 or the tailstock 4, and the headstock 3 or the tailstock 4 and the grinding wheel complete the axial clamping of the workpiece, and the pressure ring 768 and the clamping teeth 7331 complete the radial clamping of the workpiece, thereby ensuring the stability of the workpiece clamping.

[0063] Furthermore, during the grinding process, the reciprocating rotation state of the workpiece is controlled by adjusting the deflection of the pressure ring 768, thereby facilitating the grinding of the side edges of the workpiece ends.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision CNC universal grinding machine, comprising a main bed (1) and a workbench (2), characterized in that: A loading mechanism (7) is provided on the top of the workbench (2), and the loading mechanism (7) comprises: A movable base (71) is slidably mounted on the top of the workbench (2); A material storage assembly (72), the material storage assembly (72) is fixedly connected to the top of the movable base (71), and the material storage assembly (72) is used to store the rod workpiece to be polished; A clamping wheel (73), the clamping wheel (73) is movably connected to the top of the movable base (71), and the clamping wheel (73) is used to clamp the rod workpiece being polished; The driving mechanism (77) is arranged above the movable base (71), and the driving mechanism (77) is used for intermittently driving the clamping wheel (73) to rotate.

2. A high-precision CNC universal grinding machine according to claim 1, characterized in that: The top of the workbench (2) is slidably connected to a headstock (3) and a tailstock (4), the headstock (3) and the tailstock (4) are located on both sides of a loading mechanism (7), and a grinding seat (5) and a material receiving platform (6) are provided on the top of the main bed (1), the grinding seat (5) is used for grinding the outer circle of the rod workpiece, and the material receiving platform (6) is used for receiving the rod workpiece after grinding.

3. The high-precision CNC universal grinding machine according to claim 1, characterized in that: The material storage assembly (72) includes a material storage box (721), the material storage box (721) is fixedly connected to the top of the movable base (71), the bottom of the material storage box (721) is fixedly connected to a discharge base plate (722), the outside of the discharge base plate (722) is plugged with a discharge guide rod (723), and the discharge guide rod (723) and the discharge base plate (722) are elastically connected.

4. The high-precision CNC universal grinding machine according to claim 3, characterized in that: The clamping wheel (73) includes a fixed frame (731) fixedly connected to the top of the movable base (71); a central column (7311) is provided at the center of the fixed frame (731); an inner core block (732) is movably connected to the outside of the fixed frame (731); the inner core block (732) and the central column (7311) are rotatably connected; a rotating fixture (733) is rotatably connected to the outside of the inner core block (732); a fixed ring (734) for limiting is provided between the inner core block (732) and the rotating fixture (733); and the rotating fixture (733) and the fixed ring (734) are connected via a plane bearing.

5. The high-precision CNC universal grinding machine according to claim 4, characterized in that: The storage box (721) is fixedly connected to the outside of the mounting plate (74). The driving mechanism (77) includes a driving motor (771) fixedly connected to the top of the mounting plate (74), and a driving shaft (773) rotatably connected to the inside of the fixing frame (731). The driving shaft (773) extends to the outer end of the fixing frame (731) and is fixedly connected to a driving wheel (772). A transmission belt is provided between the driving wheel (772) and the driving motor (771). The shaft of the central column (7311) is rotatably connected to a driven shaft (774). A bevel gear set (775) for transmission connection is provided between the driving shaft (773) and the driven shaft (774). The outer end of the driven shaft (774) is fixedly connected to a driving wheel (776). The inner side surface of the rotating fixture (733) is fixedly connected to a driven gear ring (777). The driven gear ring (777) and the driving wheel (776) are meshed and connected.

6. The high-precision CNC universal grinding machine according to claim 4, characterized in that: The outer side surface of the central column (7311) is fixedly connected to a driving block (735), the interior of the inner core block (732) is fixedly connected to an adjusting driving rod (736), the output end of the adjusting driving rod (736) is fixedly connected to the driving block (735), and the adjusting driving rod (736) is used to adjust the deflection angle of the inner core block (732) and the central column (7311).

7. The high-precision CNC universal grinding machine according to claim 4, characterized in that: The rotating clamp (733) includes a plurality of clamping teeth (7331), the outside of which is provided with two symmetrical oblique guide grooves (7332), and the clamping surfaces of the clamping teeth (7331) are rotatably connected to a buffer wheel (7333). When the clamping teeth (7331) clamp a rod-shaped workpiece, the outer side surface of the rod-shaped workpiece protrudes to the outside of the clamping wheel (73).

8. The high-precision CNC universal grinding machine according to claim 5, characterized in that: The bottom of the mounting plate (74) is rotatably connected to a blocking rod (75), the bottom surface of the blocking rod (75) is arranged in an arc shape, the bottom surface of the blocking rod (75) and the axis of the clamping wheel (73) are collinear, the bottom surface of the blocking rod (75) is attached to the outside of the clamping wheel (73), and a spacer assembly (76) is provided between the clamping wheel (73) and the storage assembly (72), and the spacer assembly (76) is used to control the loading of the rod workpiece.

9. The high-precision CNC universal grinding machine according to claim 8, characterized in that: The material spacer assembly (76) includes a fixed rod (761) fixedly connected to the bottom of the mounting plate (74), a material spacer rod (762) movably connected to the bottom of the fixed rod (761), an outer cavity (764) is provided inside the fixed rod (761), an inner cavity (763) is provided inside the material spacer rod (762), and an oil pump rod (765) is movably connected inside the inner cavity (763), the oil pump rod (765) is fixedly connected to the bottom of the mounting plate (74), and the oil pump rod (765) is used to control the material spacer rod (762) to move up and down at the bottom of the fixed rod (761).

10. The high-precision CNC universal grinding machine according to claim 9, characterized in that: The outside of the fixed rod (761) is fixedly connected to a positioning drive rod (766), the positioning drive rod (766) is communicated with the outer cavity (764), the output end of the positioning drive rod (766) is fixedly connected to a telescopic rod (767), the bottom of the telescopic rod (767) is hinged with a pressing ring (768), the outside of the pressing ring (768) is fixedly connected to a positioning slider (769), and the positioning slider (769) is slidably connected to the blocking rod (75).

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