On-machine finishing device for super-hard grinding disc plane of annular polishing machine

Abstract

The invention belongs to the technical field of precision machining, and relates to an on-machine finishing device for a superhard grinding disc plane of an annular polishing machine. The grinding head part is used for finishing the super-hard grinding disc; the guide rail supporting part is connected with the grinding head part, supports the grinding head part and serves as a moving guide rail of the grinding head part; the force control component is connected with the guide rail supporting component and is used for reducing the influence of self-weight deformation of the guide rail supporting component on finishing precision; a fine adjustment screw is arranged on the grinding head component to adjust the grinding head component, so that the axis of a rotary table of the ring polishing machine is vertical to the axis of a diamond grinding wheel of the grinding head component. After the large super-hard grinding disc is bonded on a rotary table of the ring polishing machine, on-machine finishing can be carried out on the plane of the large super-hard grinding disc by installing the device on the ring polishing machine, the plane finishing precision is controllable, the machining efficiency is improved, the structure is simple, and the machining precision is high.

Description

Technical Field

[0001] The invention belongs to the technical field of precision machining and relates to an on-machine dressing device for a superhard grinding disc plane of a ring polishing machine. Background Art

[0002] Ring polishing machine is a kind of equipment that uses ring polishing process to process ultra-precision plane. It is mainly used for grinding and polishing of optical glass, silicon, KDP crystal, ultra-precision metal mold and other planes. It is widely used in aerospace, national defense and precision machinery fields. The ring polishing process can realize ultra-precision processing of standard round flat crystal (diameter of 150mm) used as plane measurement reference, and the flatness of level 1 flat crystal can reach 50nm. There are two main types of grinding discs for ring polishing machines, one is marble grinding disc and the other is cast iron grinding disc. When processing non-metallic materials such as optical glass, silicon, KDP crystal, marble grinding disc is often used as a rigid support disc, and then polishing pad or asphalt is added to the marble grinding disc to form a polishing disc; when processing metal parts, cast iron grinding disc is often used as a grinding disc. The material of the correction disc is generally the same as that of the grinding disc.

[0003] The superhard grinding disc is a superhard grinding disc for ring polishing machines disclosed in the invention patent [CN201910735357.7]. The grinding disc is made of boron carbide material and has the advantages of simple manufacturing process, low processing cost, wide application range, good precision retention of grinding disc and correction disc, and high processing accuracy. Large superhard grinding discs cannot be directly fired and formed, and the initial flatness of the spliced ​​superhard grinding discs is poor. The initial flatness of the superhard grinding disc needs to be accurately controlled and trimmed before it can be used.

[0004] Flatness is an indicator that limits the variation of the actual plane of the grinding disc from its ideal plane. It is used to measure the surface shape accuracy of the superhard grinding disc and is an important parameter that affects the processing accuracy of the ring polishing machine.

[0005] Invention patent [CN201910734706.3] discloses a method for making high-precision honeycomb superhard grinding discs and correction discs. For superhard grinding discs for small ring polishing machines, the inverted bonding method in the patent can overcome the disadvantage of low surface precision of large-area grinding discs directly processed, but due to the shrinkage of the glue layer during curing, the position of a single superhard grinding disc changes, and it still needs to be corrected in place after curing to obtain higher use accuracy. Therefore, the above invention is only suitable for the dressing of superhard grinding discs for small ring polishing machines, and is not suitable for high-precision dressing of the flatness of large superhard grinding discs. Summary of the invention

[0006] In order to solve the problems in the prior art that after the large super-hard grinding disc is bonded on the turntable of the ring polishing machine, it is impossible to directly perform dressing on the turntable of the ring polishing machine, the dressing accuracy of the large super-hard grinding disc is difficult to control, the dressing time is long, and the efficiency is low, the present invention proposes an on-machine dressing device for the plane of the super-hard grinding disc of the ring polishing machine, comprising a grinding head component for dressing the super-hard grinding disc; a guide rail support component connected to the grinding head component, supporting the grinding head component and serving as a movable guide rail thereof; and a force control component connected to the guide rail support component for reducing the influence of the self-weight deformation of the guide rail support component on the dressing accuracy;

[0007] The guide rail support component includes: a marble ruler supporting the grinding head component; a support base supporting the marble ruler is arranged at the bottom of the marble ruler; a linear motor stator is also arranged on the marble ruler; the support base includes: a support base bottom column arranged on the ring polishing machine to support the marble ruler; a support base frame for installing the marble ruler is arranged on the support base bottom column;

[0008] A grating scale for measuring the displacement of the grinding head component is arranged on the side wall of the marble ruler; an aluminum profile frame connected to the force control component is arranged on the support seat; the force control component is arranged between the aluminum profile frame and the marble ruler;

[0009] The grinding head components include a diamond grinding wheel; an electric spindle connected to the diamond grinding wheel to drive the diamond grinding wheel to rotate; an electric spindle fixture connected to the electric spindle to fix its position; a slider that moves along the marble flat ruler is arranged on the electric spindle fixture; a linear motor mover that matches the linear motor stator is arranged on the slider; a reading head bracket is also arranged on the slider; a reading head of a grating ruler is arranged on the reading head bracket;

[0010] The force control component includes: a stud bolt connected to the surface of the marble ruler; a tension sensor is arranged at one end of the stud bolt; a lifting eye bolt is arranged at one end of the tension sensor; a lifting hook is arranged on the lifting eye bolt; a triangular slider is arranged on the lifting hook; the triangular slider is movably arranged on the aluminum profile frame; by rotating the stud bolt, the marble ruler and the aluminum profile frame are tightened, thereby reducing the influence of the self-weight deformation of the marble ruler on its straightness as a guide rail.

[0011] According to the above-mentioned on-machine dressing device for the plane of the super-hard grinding disc of a ring polishing machine, a tank chain is arranged on the side of the support seat; the cables of the linear motor mover, the reading head and the electric spindle are all gathered by the tank chain to prevent the cables from contacting the super-hard grinding disc and the diamond grinding wheel.

[0012] According to the above-mentioned on-machine dressing device for the surface of the super-hard grinding disc of a ring polishing machine, the marble flat ruler has a grade 0 accuracy.

[0013] According to the above-mentioned on-machine dressing device for the surface of a super-hard grinding disc of a ring polishing machine, there are two support seat bottom columns, and a flange for mounting on the ring polishing machine is arranged on the support seat bottom columns; the upper surfaces of the frame bottom plates of the two support seat frames respectively arranged on the two support seat bottom columns are coplanar, and the frame top plates are cross-shaped; the support seat frames support the marble flat ruler.

[0014] According to the above-mentioned on-machine dressing device for the surface of the super-hard grinding disc of a ring polishing machine, a marble ruler threaded hole and a left-handed threaded hole are provided on the upper surface of the marble ruler, and the stator bolts of the linear motor are fixedly set on the upper surface of the marble ruler through the marble ruler threaded hole. The left-handed threaded hole is used to connect one end of the stud bolt of the force control component; handle threaded holes for carrying are provided on both end surfaces of the marble ruler.

[0015] According to the above-mentioned on-machine dressing device for the surface of the super-hard grinding disc of a ring polishing machine, the grating scale is glued to the side surface of the marble flat scale.

[0016] According to the above-mentioned on-machine dressing device for the surface of a super-hard grinding disc of a ring polishing machine, the slider includes: a horizontally arranged slider bottom plate; two pairs of side edges of the slider bottom plate are provided with slider side plates A and slider side plates B perpendicular thereto; slider side plates A and slider side plates B are provided with slider top plates parallel to the slider bottom plate; the cross-section of the slider top plate is concave, and a linear motor mover is provided in its groove; and a slider plastic tape is provided on the slider top plate to cooperate with the upper surface of the marble level ruler.

[0017] According to the above-mentioned on-machine dressing device for the surface of the super-hard grinding disc of a ring polishing machine, a grating scale groove for mounting a reading head of the grating scale is provided on the inner side wall of the slider side plate A.

[0018] According to the above-mentioned on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine, a tool setting plate for adjusting the posture of the diamond grinding wheel connected to the electric spindle fixture is arranged at the bottom of the slider base plate; the tool setting plate includes an adjustment plate; and a fine-tuning screw is arranged on the adjustment plate.

[0019] According to the above-mentioned on-machine dressing device for the surface of the super-hard grinding disc of a ring polishing machine, the aluminum profile frame is in the shape of a single bar; the aluminum profile frame is fixed on the support seat frame with an angle code; the support block of the triangular slider is arranged in the groove of the cross beam of the aluminum profile frame, so that the triangular slider can move along the groove of the cross beam of the aluminum profile frame; one end of the stud bolt is arranged in the left-handed threaded hole, and the other end is connected to the tension sensor; according to the indication of the tension sensor, the depth of the stud bolt being screwed into the left-handed threaded hole is adjusted; the tension sensor is connected to the eye bolt; the hook is respectively connected to the eye bolt and the triangular slider.

[0020] The advantages of the present invention compared with the prior art are:

[0021] 1. The present invention uses a guide rail supporting component that supports the grinding head component and serves as its movable guide rail; and a force control component connected to the guide rail supporting component to reduce the influence of the self-weight deformation of the guide rail supporting component on the dressing accuracy. After the large superhard grinding disc is bonded to the turntable of the ring polishing machine, a dressing device is installed on the ring polishing machine to directly perform high-precision on-machine dressing on the surface of the large superhard grinding disc, thereby improving the dressing efficiency.

[0022] 2. The present invention uses a grade 0 marble ruler as a guide rail, which not only simplifies the structure of the superhard grinding disc dressing device and reduces the manufacturing cost, but also improves the dressing accuracy of the working surface of the large superhard grinding disc by refining the flatness of the working surface of the marble ruler.

[0023] 3. The present invention uses a force control structure to reduce the deformation caused by the self-weight of the 0-grade marble ruler. Among them, the stud bolts and the tension sensor can control the tension, minimize the deformation caused by the weight of the marble ruler, and improve the finishing accuracy of the working surface of the large superhard grinding disc.

[0024] 4. The present invention can fine-tune the inclination angle and height position of the adjustment plate through the fine-tuning screw to achieve the tool alignment and feed of the diamond grinding wheel. At the same time, the verticality of the axis of the diamond grinding wheel and the axis of the turntable of the ring polishing machine can be adjusted. The structure is simple and the plane finishing accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the grinding head structure of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the slider of the present invention.

[0028] Figure 4 It is a schematic diagram of the structure of the reading head bracket of the present invention.

[0029] Figure 5 It is a schematic diagram of the tool setting plate structure of the present invention.

[0030] Figure 6 It is a schematic diagram of the support base frame structure of the present invention.

[0031] Figure 7 It is a schematic diagram of the support base column structure of the present invention.

[0032] Figure 8 It is a schematic diagram of the force control module of the present invention.

[0033] 1: Aluminum profile frame; 2: Marble ruler; 3: Tank chain; 4: Grinding head component; 5: Support seat; 6: Superhard grinding disc; 7: Fixed bracket; 8: Grating scale; 9: Linear motor stator; 10: Force control component; 11: Guide rail support component; 4-1: Slider; 4-2: Linear motor mover; 4-3: Tool setting plate; 4-3-1: Adjustment plate; 4-4: Electric spindle fixture; 4-5: Diamond grinding wheel; 4-6: Electric spindle; 4-7: Reading head bracket; 4-8: Reading head; 4-9: Moving bracket; 4-1-1: Slider bottom plate; 4-1-2: Slider side plate A; 4-1-2-A: Reading head bracket threaded hole; 4-1-2-B: Grating scale groove; 4-1-3: Slider top plate; 4-1-3-A: Linear motor mover threaded hole; 4-1-3-B: Slider plastic tape ;4-1-4: Slider side plate B;4-7-A: Reserved hole for grating ruler reading head;4-7-B: Through hole for reading head bracket;4-3-2: Locking nut;4-3-3: Fine-tuning screw;4-3-4: Fixing screw;4-6-B: Threaded hole for base connection;5-1: Frame cross top plate;5-1-A: Threaded hole for angle code;5-2: Frame side plate A;5-3: Frame bottom plate;5-3-A: Countersunk hole for support base connection;5-4: Frame side plate B;5-4-A: Threaded hole for bracket connection;5-5: Support base bottom column;5-5-A: Threaded hole for support base connection;5-6: Support base frame;10-1: Triangular slider;10-2: Lifting hook;10-3: Lifting eye bolt;10-4: Tension sensor;10-5: Stud bolt;100: Ring polishing machine;101: Turntable. DETAILED DESCRIPTION

[0034] Preferred embodiment 1

[0035] like Figure 1 As shown: an on-machine dressing device for the plane of a super-hard grinding disc of a ring polishing machine comprises: a grinding head component 4; a marble ruler 2 serving as a guide rail and a dressing reference for the grinding head component 4, the working surface of the marble ruler 2 has a small flatness and high precision, and can be used as a guide rail to improve the processing accuracy; the contact surface of the slider 4-1 and the marble ruler 2 is attached to the soft belt of the guide rail to reduce the "creeping" phenomenon when the slider 4-1 moves; the force control component 10 controls the tension by adjusting the tightness of the stud bolt 10-5 to reduce the deformation caused by the self-weight of the marble ruler 2; the fine-tuning screw 4-3-3 adjusts the orientation of the grinding head component 4 so that the axis of the turntable 101 of the ring polishing machine 100 is perpendicular to the axis of the diamond grinding wheel 4; the on-machine dressing device for the plane of the super-hard grinding disc of the ring polishing machine utilizes the existing hole positions of the ring polishing machine 100 to achieve on-machine dressing.

[0036] The guide rail support component 11 includes a support base 5, a marble ruler 2, a linear motor stator 9, a tank chain 3, a grating ruler 8, and an aluminum profile frame 1. The superhard grinding disc 6 is made by splicing oilstones on the turntable 101 of the ring polishing machine 100. The marble ruler 2 with four-sided precision is used as the guide rail of the grinding head component 4, and the high-precision plane of the grade 0 marble ruler is used as a reference to trim the plane of the superhard grinding disc 6. Two support base columns 5-5 with flanges are fixedly set on the ring polishing machine 100. A support base frame 5-6 is fixedly set on the support base column 5-5, and the upper surfaces of the two frame bottom plates 5-3 of the support base frame 5-6 are coplanar, and the frame top plate 5-1 is cross-shaped. The support base frame 5-6 supports the marble ruler 2, and the wide surface of the marble ruler 2 is placed horizontally. The marble ruler 2 is provided with a marble ruler threaded hole and a left-hand threaded hole. The linear motor stator 9 is fixedly set on the upper surface of the marble ruler 2 through the marble ruler threaded hole and its bolts. The left-hand threaded hole is used to connect the stud bolt 10-5 of the force control component 10. The marble ruler 2 is provided with handle threaded holes at both ends, and the handle is installed for easy transportation. The grating ruler 8 is glued to the middle position of the side of the marble ruler 2. The tank chain 3 is set on the side of the support seat 5 for bundling electric wires and data cables. The marble ruler 2 is provided with a handle embedded threaded hole at each end.

[0037] The grinding head component 4 includes a slider 4-1, a linear motor mover 4-2, a reading head bracket 4-7, a reading head 4-8, a tool setting plate 4-3, an electric spindle fixture 4-4, an electric spindle 4-6, and a diamond grinding wheel 4-5. The slider 4-1 is composed of four plates, and the slider 4-1 is fastened and connected between two support seats 5 with countersunk bolts, and slides with a marble ruler 2 as a guide rail. The slider 4-1 is provided with a grating scale groove 4-1-2-B on the side of the marble ruler 2, and the reading head 4-8 of the grating scale 8 is arranged in the grating scale groove 4-1-2-B. The lower surface of the slider top plate 4-1-3 is in contact with the marble ruler 2 and is attached to the guide rail soft belt. The dynamic and static friction coefficients of the guide rail soft belt are small and the difference between the two is small, which can reduce the vibration and creeping of the slider 4-1 during the movement. The linear motor mover 4-2 is bolted to the slider top plate 4-1-3 to drive the grinding head component 4 to move linearly. The function of the adjustment plate 4-3-1 is to connect the electric spindle fixture 4-4 with the slider 4-1 and adjust the posture of the diamond grinding wheel 4-5. The adjustment plate 4-3-1 and the slider 4-1 are bolted together. Adjusting the length of the fine-tuning screw 4-3-3 can change the tilt direction of the adjustment plate 4-3-1 so that the axis of the diamond grinding wheel 4-5 is perpendicular to the axis of the turntable 101 of the ring polishing machine 100. After adjustment, tighten it with the tightening nut 4-3-2. The reading head bracket 4-7 is bolted to the slider 4-1. The reading head 4-8 is set on the reading head bracket 4-7. The grating ruler 8 controls the slider 4-1 to make reciprocating linear motion.

[0038] The force control component 10 can reduce the influence of the self-weight deformation of the marble ruler 2 on its straightness as a guide rail.

[0039] The force control component 10 includes a stud bolt 10-5, a tension sensor 10-4, an eyebolt 10-3, a triangular slider 10-1, and a hook 10-2. The aluminum profile frame 1 is in the shape of a horizontal bar. The aluminum profile frame 1 is fixed to the support seat 5 with an angle code. The wide surface of the crossbeam of the aluminum profile frame 1 is placed horizontally to reduce the stress deformation of the aluminum profile frame 1; the support block of the triangular slider 10-1 is inserted into the groove of the crossbeam of the aluminum profile frame 1. A left-handed threaded hole is set on the upper surface of the marble ruler 2; one end of the stud bolt 10-5 is screwed into the left-handed threaded hole, and the other end is connected to the tension sensor 10-4. Twisting the stud bolt can play a tightening role, and the tension can be adjusted according to the indication of the tension sensor 10-4; the other end of the tension sensor 10-4 is connected to the eyebolt 10-3; the hook 10-2 is connected to the eyebolt 10-3 and the triangular slider 10-1.

[0040] like Figure 1 As shown: The on-machine dressing device of the super-hard grinding disc of the ring polishing machine can realize on-machine dressing. The superhard grinding disc 6 is spliced ​​on the turntable 101 of the ring polishing machine 100; the support seat 5 is fixed on the platform of the ring polishing machine 100 by countersunk screws; the marble ruler 2 is horizontally arranged on the two support seats 5; the aluminum profile frame 1 is fixedly connected to the frame top plate 5-1 of the support seat 5 with angle code bolts; the fixed bracket 7 is fixedly arranged on the frame side plate B; the tank chain 3 is screwed on the fixed bracket 7 and the sliding bracket 4-9; the grating ruler 8 is glued to the side of the marble ruler 2; the slider 4-1 uses the marble ruler 2 as a guide rail to drive the grinding head component 4 to do linear motion; the linear motor stator 9 is fixedly connected to the marble ruler 2 with bolts, wherein the linear motor stator 9 is composed of 3 stators with 192mm stroke and 1 stator with 128mm stroke; one end of the force control component 10 is connected to the aluminum profile frame 1 with a triangular slider 10-1, and the other end is connected to the left-handed threaded hole of the marble ruler with a stud bolt 10-5.

[0041] like Figure 2As shown: the linear motor mover 4-2 is bolted to the top plate 4-1-3 of the slider through the threaded hole 4-1-3-A of the linear motor mover; the linear motor mover 4-1 and the linear motor stator 9 make the grinding head component 4 perform reciprocating linear motion; the reading head bracket 4-7 is bolted to the side plate A4-1-2 of the slider through the threaded hole 4-1-2-A of the reading head bracket and the through hole 4-7-B of the reading head bracket. The reading head 4-8 of the grating ruler 8 is bolted to the reading head bracket 4-7 through the reserved hole 4-7-A of the grating ruler reading head. The electric spindle clamp 4-4 is fixedly connected to the electric spindle 4-6 and fixed to the tool setting plate 4-3 with countersunk bolts; the inclination direction and height of the tool setting plate 4-3 are fine-tuned with the fine-adjusting screw 4-3-3, and the fixing screw 4-3-4 is fixedly connected to the slider base plate 4-1-1 through the threaded hole 4-1-1-A of the slider base plate; the electric spindle 4-6 is connected to the diamond grinding wheel 4-6 with a hexagon socket screw; the movable bracket 4-9 is fixedly connected to the slider side plate A4-1-2 with bolts.

[0042] like Figure 3 As shown: the slider 4-1 includes a slider top plate 4-1-3, a slider side plate A4-1-2, a slider side plate B4-1-4, and a slider bottom plate 4-1-1; wherein the slider side plate A4-1-2 is provided with a grating scale groove 4-1-2-B for setting the grating scale 8, so that the slider 4-1 moves smoothly; the reading head bracket 4-7 is set on the slider side plate A4-1-2 through the reading head bracket threaded hole 4-1-2-A; the linear motor mover 4-2 is set on the slider top plate 4-1-3 through the linear motor mover threaded hole 4-1-3-A; on the surface of the slider top plate 4-1-3 that contacts the marble ruler 2: the slider plastic tape 4-1-3-B is glued to the guide rail soft tape.

[0043] The two slider plastic tapes 4-1-3-B of the slider top plate 4-1-3 are in the same plane; the parallelism of the upper and lower surfaces of the slider bottom plate 4-1-1 is less than 1μm; the flatness of the slider side plate A4-1-2 and the slider side plate B 4-1-4 are both less than 2μm, to ensure that the slider 4-1 will not deviate left and right when sliding along the marble ruler 2.

[0044] like Figure 4 As shown: the reading head bracket 4-7 is L-shaped, and a reading head bracket through hole 4-7-B is provided on the side to bolt the reading head bracket 4-7 and the slider side plate A4-1-2; two grating scale reading head reserved holes 4-7-A are provided on the top of the reading head bracket 4-7 to bolt the reading head 4-8 and the slider side plate A4-1-2.

[0045] like Figure 5As shown: the tool setting plate 4-3 includes an adjustment plate 4-3-1, a fine-tuning screw 4-3-3, a fixing screw 4-3-4, and a locking nut 4-3-2; the fine-tuning screw 4-3-3 adjusts the height and tilt angle of the adjustment plate 4-3-1; the fixing screw 4-3-4 connects the adjustment plate 4-3-1 and the slider 4-1; the locking nut 4-3-2 fixes the adjustment plate 4-3-1 in the adjusted position to prevent it from sliding.

[0046] like Figure 6 As shown: the support seat frame 5-6 includes a cross-shaped frame top plate 5-1, a frame side plate A5-2, a frame side plate B5-4, and a frame bottom plate 5-3; the angle code threaded holes 5-1-A are used to fix the frame top plate 5-1 and the aluminum profile frame 1 through angle code bolts; there are 6 support seat connection countersunk holes 5-3-A, which are used to bolt the support seat frame 5-6 and the support seat base column 5-5, and the positions of the support seat connection countersunk holes 5-3-A correspond to the positions of the support seat base column threaded holes of the support seat base column 5-5, and a marble ruler 2 is set in the two support seat frames 5-6.

[0047] The flatness of the upper surface of the frame bottom plate 5-3 of the support seat frame 5-6 is less than 1 μm, so as to improve the installation rigidity and accuracy of the marble ruler 2 on the frame bottom plate 5-3 of the support seat frame 5-6.

[0048] like Figure 7 As shown: the support seat bottom column 5-5 is used to support the entire dressing device, and a support seat bottom column threaded hole is set on the flange of the support seat bottom column 5-5, and the support seat bottom column 5-5 is bolted to the support seat frame 5-6 through the support seat connecting countersunk hole 5-3-A; the flange plate of the support seat bottom column 5-5 is provided with evenly distributed support seat connecting threaded holes 5-5-A, which are used to fix the support seat 5 on the ring polishing machine 100.

[0049] like Figure 8 As shown: the force control component 10 includes: a triangular slider 10-1, a hook 10-2, an eyebolt 10-3, a tension sensor 10-4, and a stud 10-5; the support block of the triangular slider 10-1 is set in the groove of the crossbeam of the aluminum profile frame 1; the hook 10-2 connects the triangular slider 10-1 and the eyebolt 10-3; one end of the tension sensor 10-4 is connected to the eyebolt 10-3, and the other end is connected to the stud 10-5; the stud 10-5 is screwed into the left-handed threaded hole set on the marble ruler 2, and the rotation of the stud 10-5 can control the magnitude of the tension of the force control component 10 on the marble ruler 2, and the tension value is displayed by the tension sensor 7-4. Adjusting the tension can reduce the deformation caused by the deadweight of the marble ruler 2 and improve the linear accuracy of the movement of the grinding head component 4.

[0050] Taking the super-hard grinding disc ring polishing machine with a diameter of 1.2m as an example, the specific installation steps of the super-hard grinding disc plane on-machine dressing device of the ring polishing machine are as follows:

[0051] Step 1: Roughly grind each boron carbide oilstone for splicing to reduce the thickness deviation of the boron carbide oilstone; directly bond the superhard grinding disc 6 to the turntable 101 of the ring polishing machine 100; for oilstones with too large thickness deviation, add shims to control the height difference of all oilstones to less than 0.1mm.

[0052] Step 2: Both end surfaces of the marble ruler 2 are provided with handle embedded threaded holes; two support base bottom columns 5-5 are fixedly connected to the ring polishing machine 100 by countersunk bolts; a two-meter-long marble ruler 2 is horizontally set in the support base frame 5-6;

[0053] According to Ansys theoretical analysis, when the slider 4-1 is installed, the deformation of the wide surface of the marble ruler 2 is 10μm when it is placed horizontally, and the deformation of the narrow surface is 8μm when it is placed horizontally, and the difference between the two is not large; considering that the wide surface of the marble ruler 2 is placed horizontally to make the device structure of this embodiment more stable and compact, and at the same time, the linear motor stator 4-2 needs to be installed on the marble ruler 2; in order to make the contact area between the slider 4-1 and the upper surface of the marble ruler 2 larger; therefore, in this embodiment, the wide surface of the marble ruler 2 is placed horizontally, and the force control component 10 is used to reduce the deformation of the marble ruler 2 caused by gravity.

[0054] Step three: Use angle brackets to fix the aluminum profile frame 1 on the frame top plate 5-1 of the support seat frame 5-6; the crossbeam of the aluminum profile frame 1 is 2 meters long to reduce deformation due to its own weight; wherein the support block of the triangular slider 10-1 is set in the groove of the crossbeam of the aluminum profile frame 1.

[0055] Step 4: Fix the linear motor stator 9 on the marble ruler 2 with bolts; set the grating ruler 8 on the side of the marble ruler 2; at the contact position between the slider top plate 4-1-3 and the marble ruler 2: stick the guide rail soft belt on the slider plastic belt 4-1-3-B, the guide rail soft belt has close static friction coefficient, which can reduce the "creeping" phenomenon of the slider 4, play a role in shock absorption, wear resistance and improved precision; the guide rail soft belt is laser engraved with texture for easy lubrication; fix the linear motor mover 9 with bolts under the slider top plate 4-1-3; set the grating ruler groove 4-1-2-B on the inner wall of the slider side plate A4-1-2 for installing the grating ruler 8; the threaded hole 4-1-2-A of the reading head bracket is used to bolt the reading head bracket 4-7 of the grating ruler 8; bolt the reading head 4-8 and the reading head bracket 4-7.

[0056] The adjusting plate 4-3-1 is connected to the slider base plate 4-1-1 by means of a fine-tuning screw 4-3-3 and a fixing screw 4-3-4; the electric spindle fixture 4-4 is connected to the adjusting plate 4-3-1 by means of a countersunk bolt.

[0057] The installation sequence of the slider 4-1 is as follows: the slider top plate 4-1-3 is first set on the marble ruler 2, and the slider side plate A4-1-2 and slider side plate B4-1-4 are installed; finally, the slider bottom plate 4-1-1 is installed; after the slider 4-1 is installed, it is placed in the electric spindle 4-6 and clamped with the electric spindle fixture 4-4; after the diamond grinding wheel 4-5 is installed, the fine adjustment screw 4-3-3 is finely adjusted to control the height and tilt angle of the adjustment plate 4-3-1, so that the diamond grinding wheel 4-5 The axis is perpendicular to the axis of the turntable 101 of the ring polishing machine 100, and the locking nut 4-3-2 is tightened to lock the position of the adjusted adjustment plate 4-3-1; when installing the grinding head component 4, its position is close to the support seat frame 5-6, and the diamond grinding wheel 4-5 should be kept away from the grinding disc 200 to prevent collision; the cables of the linear motor mover 4-2, the reading head 4-8, and the electric spindle 4-6 are concentrated and bundled through the tank chain 3 to prevent the cables from contacting the grinding disc 200 and the diamond grinding wheel 4-5.

[0058] Step 5: The left-handed end of the stud bolt 10-4 is screwed into the left-handed threaded hole of the marble ruler 2, and the right-handed end is connected to the tension sensor 10-4; the hook 10-2 is connected to the triangular slider 10-1 and the eye bolt 10-3; first screw the eye bolt 10-3 into the tension sensor 10-4, and finally adjust the tightness of the stud bolt 10-4; now the installation is completed.

[0059] The specific steps of superhard grinding disc surface dressing device for ring polishing machine are as follows:

[0060] Step 1: Before bonding the super-hard grinding disc 6, first measure the inner and outer tapers of the turntable of the ring polishing machine 100, and roughly adjust the inclination angle of the marble ruler 2 by adding shims according to the taper of the turntable 101.

[0061] Step 2: According to the reading of the tension sensor 10-4, the stud bolt 10-4 is rotated, and the two ends of the stud bolt 10-4 are screwed into the left-hand threaded hole of the marble ruler 2 and the tension sensor 10-4 respectively, generating an upward pulling force on the marble ruler 2; the pulling force is adjusted to 600N. The deformation caused by the self-weight of the marble ruler 2 is reduced from 10μm to 2μm.

[0062] Step 3: Control the reciprocating linear motion stroke of the grinding head component 4 to 600 mm through the linear motor; set the speed of the electric spindle 4-6.

[0063] Step 4: Tool setting: Start the electric spindle 4-6 to rotate the diamond grinding wheel 4-5. Loosen the fixing screw 4-3-4, turn the fine-tuning screw 4-3-3 to change the height and tilt angle of the adjustment plate 4-3-1, and make the axis of the diamond grinding wheel 4-5 perpendicular to the axis of the turntable 101 of the ring polishing machine 100; after adjusting the fine-tuning screw 4-3-3, tighten the fixing screw 4-3-3 and the locking nut 4-3-2 to fix the adjustment plate 4-3-1.

[0064] Step 5: Start the linear motor mover 4 - 2 to make the grinding head component 4 perform uniform reciprocating motion in the linear direction. At this time, the diamond grinding wheel 4 - 5 is also in a rotating state to grind the grinding disc 200 .

[0065] Step 6: Feed: Repeat step 4 to complete the feed.

[0066] Step seven: The diamond grinding wheel 4-5 grinds the grinding disc 200 multiple times, wherein the diamond grinding wheel 4-5 reciprocates forward and reverse to trim the plane of the grinding disc 200; after multiple grindings, the inner and outer tapers of the superhard grinding disc 6 are measured with a knife edge ruler perpendicular to the radial direction of the turntable 101; the inclination angle of the marble ruler 2 is controlled by adding a gasket to the upper surface of the frame bottom plate 5-3 of the supporting frame 5-6, and then the superhard grinding disc 2 is processed to reduce the inner and outer tapers of the superhard grinding disc 200.

[0067] Step 8: After multiple grinding and adjustments, the flatness of the superhard grinding wheel 6 is less than 10 μm, and the grinding is completed.

[0068] The detailed description of the present invention is only a preferred embodiment and does not limit the scope of the invention. Those skilled in the art may make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine, characterized in that: It comprises a grinding head component (4) for dressing a superhard grinding disc (6); a guide rail support component (11) connected to the grinding head component (4), supporting the grinding head component (4) and serving as a movable guide rail thereof; and a force control component (10) connected to the guide rail support component (11) for reducing the influence of the self-weight deformation of the guide rail support component (11) on the dressing accuracy; The guide rail support component (11) comprises: a marble ruler (2) supporting the grinding head component (4); a support seat (5) supporting the marble ruler (2) is arranged at the bottom of the marble ruler (2); a linear motor stator (9) is also arranged on the marble ruler (2); the support seat (5) comprises: a support seat bottom column (5-5) arranged on the ring polishing machine (100) to support the marble ruler (2); a support seat frame (5-6) for mounting the marble ruler (2) is arranged on the support seat bottom column (5-5); A grating scale (8) for measuring the displacement of a grinding head component (4) is arranged on the side wall of the marble ruler (2); an aluminum profile frame (1) connected to a force control component (10) is arranged on the support seat (5); the force control component (10) is arranged between the aluminum profile frame (1) and the marble ruler (2); The grinding head component (4) comprises a diamond grinding wheel (4-5); an electric spindle (4-6) connected to the diamond grinding wheel (4-5) and driving the diamond grinding wheel (4-5) to rotate; an electric spindle fixture (4-4) connected to the electric spindle (4-6) and fixing the position of the electric spindle; a slider (4-1) moving along a marble ruler (2) is arranged on the electric spindle fixture (4-4); a linear motor mover (4-2) matching with a linear motor stator (9) is arranged on the slider (4-1); a reading head bracket (4-7) is also arranged on the slider (4-1); a reading head (4-8) of a grating ruler (8) is arranged on the reading head bracket (4-7); The force control component (10) comprises: a stud bolt (10-5) connected to the surface of a marble ruler (2) by bolts; a tension sensor (10-4) is arranged at one end of the stud bolt (10-5); a lifting eye bolt (10-3) is arranged at one end of the tension sensor (10-4); a lifting hook (10-2) is arranged on the lifting eye bolt (10-3); a triangular slider (10-1) is arranged on the lifting hook (10-2); the triangular slider (10-1) is movably arranged on an aluminum profile frame (1); by rotating the stud bolt (10-5), the marble ruler (2) and the aluminum profile frame (1) are tightened, thereby reducing the influence of the self-weight deformation of the marble ruler (2) on the straightness of the guide rail.

2. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 1 is characterized in that: A tank chain (3) is arranged on the side of the support seat (5); the cables of the linear motor mover (4-2), the reading head (4-8) and the electric spindle (4-6) are all gathered by the tank chain (3) to prevent the cables from contacting the superhard grinding disc (6) and the diamond grinding wheel (4-5).

3. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 2 is characterized in that: The marble ruler (2) has a precision of level 0.

4. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 3 is characterized in that: There are two support base bottom columns (5-5), and a flange for mounting on a ring polishing machine (100) is arranged on the support base bottom columns (5-5); the upper surfaces of the frame bottom plates (5-3) of the two support base frames (5-6) respectively arranged on the two support base bottom columns (5-5) are coplanar, and the frame top plates (5-1) are cross-shaped; the support base frames (5-6) support the marble flat ruler (2).

5. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 4 is characterized in that: The upper surface of the marble ruler (2) is provided with a marble ruler threaded hole and a left-handed threaded hole, through which a linear motor stator (9) is bolted and fixed on the upper surface of the marble ruler (2), and the left-handed threaded hole is used to connect one end of a stud bolt (10-5) of a force control component (10); and handle threaded holes for carrying are provided on both end surfaces of the marble ruler (2).

6. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 5, characterized in that: The grating ruler (8) is glued to the side of the marble flat ruler (2).

7. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 6, characterized in that: The slider (4-1) comprises: a slider bottom plate (4-1-1) arranged horizontally; two pairs of side edges of the slider bottom plate (4-1-1) are provided with slider side plates A (4-1-2) and slider side plates B (4-1-4) perpendicular thereto; a slider top plate (4-1-3) parallel to the slider bottom plate (4-1-1) is provided on the slider side plates A (4-1-2) and the slider side plates B (4-1-4); the slider top plate (4-1-3) has a concave cross section, and a linear motor mover (4-2) is provided in its groove; and a slider plastic tape (4-1-3-B) matched with the upper surface of a marble ruler (2) is provided on the slider top plate (4-1-3).

8. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 7, characterized in that: A grating scale groove (4-1-2-B) for installing a reading head (4-8) of the grating scale (8) is provided on the inner side wall of the slider side plate A (4-1-2).

9. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 8, characterized in that: A tool setting plate (4-3) connected to an electric spindle fixture (4-4) for adjusting the posture of a diamond grinding wheel (4-5) is arranged at the bottom of the slider base plate (4-1-1); the tool setting plate (4-3) comprises an adjustment plate (4-3-1); and a fine-tuning screw (4-3-3) is arranged on the adjustment plate (4-3-1).

10. The on-machine dressing device for the surface of a superhard grinding disc of a ring polishing machine according to claim 9, characterized in that: The aluminum profile frame (1) is in the shape of a horizontal bar; the aluminum profile frame (1) is fixed on a support seat frame (5-6) by using an angle code; a support block of a triangular slider (10-1) is arranged in a groove of a cross beam of the aluminum profile frame (1), so that the triangular slider (10-1) can move along the groove of the cross beam of the aluminum profile frame (1); one end of a stud bolt (10-5) is arranged in a left-handed threaded hole, and the other end is connected to a tension sensor (10-7); the depth of the stud bolt (10-5) being screwed into the left-handed threaded hole is adjusted according to the indication of the tension sensor (10-7); the tension sensor (10-7) is connected to a lifting eye bolt (10-3); and a lifting hook (10-2) is respectively connected to the lifting eye bolt (10-3) and the triangular slider (10-1).

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