Manual dressing device for symmetrical double-conical-surface grinding wheel and using method

Abstract

The invention belongs to the technical field of precision machining, and relates to a manual dressing device for a symmetric double-conical-surface grinding wheel and a using method. Comprising an angle template guide rail with symmetrical conical surfaces, a guide rail bottom plate, a threaded diamond pen and a sliding support, the angle template guide rail is provided with an angle knife edge measuring template, and it can be ensured that the taper angle of the trimmed double-conical-surface grinding wheel is consistent with the tooth profile angle of a tooth groove machined by the trimmed grinding wheel to be trimmed; one end of the sliding support can clamp a threaded diamond pen for machining, the other end of the sliding support can clamp a displacement measuring instrument, and when the angle template guide rail is installed, the position of the angle template guide rail can be adjusted through measurement data of the displacement measuring instrument, so that the cone angle bisector of the angle template guide rail coincides with the cone angle bisector of a grinding wheel to be trimmed; the two conical surfaces of the trimmed symmetrical double-conical-surface grinding wheel are consistent in size; the device is simple in structure, convenient to operate and use and high in machining precision.

Description

Technical Field

[0001] The invention belongs to the technical field of precision machining and relates to a manual dressing device for a symmetrical double-cone grinding wheel and a use method thereof. Background Art

[0002] Symmetrical double-cone grinding wheels are widely used in the precision machining of parts with symmetrical tooth shapes, such as threads, worms, gears, and end gears. Regardless of whether the forming method or the mold forming method is used, the dressing accuracy of the grinding wheel is one of the most critical factors affecting the machining accuracy of the parts. At present, the dressing methods for symmetrical cone angle grinding wheels mainly include forming diamond roller dressing method, digital grinding wheel dressing method, and diamond pen dressing method.

[0003] The diamond roller dressing method is divided into two types: single roller dressing and double roller dressing. Diamond rollers dress conical grinding wheels by extrusion. However, the machining accuracy of the rollers and their position accuracy have an important influence on the dressing accuracy of the conical grinding wheels. When diamond rollers are used for dressing, the dressing accuracy of the grinding wheels is usually low, and it is difficult to ensure the cone angle accuracy of the left and right cone surfaces.

[0004] Digital grinding wheel dressing is a new dressing method proposed in recent years. The grinding wheel can be only rotated, and the dressing wheel can be driven by two sets of guide rails to achieve dressing on both sides of the conical grinding wheel. Alternatively, the dressing wheel can be only rotated, and the grinding wheel can be driven by two sets of guide rails to achieve dressing on both sides of the conical grinding wheel. Due to the movement accuracy of the guide rails, the matching accuracy of the two sets of guide rails, and the drive control accuracy, the dressing accuracy of the conical grinding wheel is affected, resulting in a high cost for this dressing method, and there are many error sources in the dressing device, making it difficult to achieve a high dressing accuracy.

[0005] Another common dressing method is to use a diamond pen to perform dressing along the generatrix of the conical grinding wheel. In this method, as long as the linear motion and uniform motion of the diamond pen are ensured, a high dressing accuracy can be achieved. The invention patent "A high-precision diamond pen grinding wheel dresser [CN107471114B]" provides a dresser based on a stepper motor drive and a precision sliding guide rail, which is specially used for the dressing of single-sided conical grinding wheels. By using two sets of identical dressers for symmetrical installation, the dressing of symmetrical double-conical grinding wheels can be achieved. Due to the limitation of the working space, the arrangement of these two sets of equipment will face certain difficulties, so the device is not conducive to the dressing of smaller grinding wheels. In addition, when two sets of linear guide rail systems are used to dress the double-sided conical grinding wheel, the symmetry accuracy of the guide rail installation will directly affect the dressing accuracy, and the cost of this method is also relatively high.

[0006] The invention patent "A dressing device and method for a symmetrical double-conical grinding wheel [CN108527159B]" is improved on this basis, and proposes a method of forming a mirror motion of the diamond pen linear motion by flipping 180° to achieve high-precision dressing of the double-conical surfaces of the symmetrical wheel, and builds a symmetrical double-conical grinding wheel dressing device, which can achieve the dressing of the double-conical grinding wheel with only one set of guide rails; however, the structure is composed of a high-precision 180° flip positioner and a diamond pen grinding wheel dresser, which inevitably makes the structure complicated, and the structure cannot ensure that the bisector of the grinding wheel cone surface coincides with the bisector of the cone angle of the grinding wheel to be ground, and the angles of the two cone surfaces are consistent but the sizes of the two cone surfaces are different. Summary of the invention

[0007] In order to solve the problems of complex structure, high manufacturing cost, cumbersome dressing method and inconsistent size of double cones in high-precision dressing devices for symmetrical double-cone grinding wheels, the present invention proposes a manual dressing device for symmetrical double-cone grinding wheels, including an optical platform; a threaded diamond pen for dressing the grinding wheel to be dressed; a displacement measuring instrument for debugging the position of the threaded diamond pen before dressing the grinding wheel to be dressed, a symmetrical double-cone forming grinding wheel template and an adjustment plate; a lifting platform is arranged on the optical platform; a guide rail bottom plate is arranged on the lifting platform; an angle template guide rail and a sliding bracket are arranged on the guide rail bottom plate; one end of the sliding bracket can clamp the threaded diamond pen, and the other end can clamp the displacement measuring instrument; an electric spindle fixture is also arranged on the optical platform; an electric spindle for mounting the grinding wheel to be dressed and the symmetrical double-cone forming grinding wheel template is arranged on the electric spindle fixture; a precision adjustment screw is arranged on the adjustment plate;

[0008] An angle knife edge measuring template is provided on the angle template guide rail to ensure the cone angle accuracy of the double cone surface of the grinding wheel to be dressed after dressing;

[0009] When installing the angle template guide rail, the position of the angle template guide rail can be adjusted by the displacement measuring instrument so that its cone angle bisector coincides with the cone angle bisector of the grinding wheel to be dressed;

[0010] The sliding bracket slides along the angle template guide rail and the guide rail bottom plate, thereby driving the threaded diamond pen to dress the double cone surface of the grinding wheel to be dressed.

[0011] According to the manual dressing device of a symmetrical double-conical grinding wheel described above, the angle template guide is in the shape of an isosceles triangle plate, and the angle of its vertex angle is consistent with the angle of the grinding wheel to be dressed after dressing; a 1-3 mm thick isosceles triangle plate-shaped angle knife edge measurement template is arranged on the top of the angle template guide, and two template knife edge surfaces are chamfered on the edges of the angle knife edge measurement template, and the two template knife edge surfaces are respectively coplanar with the angle template guide working surface A and the angle template guide working surface B of the angle template guide; a guide rail soft belt with laser texture is adhered to the sliding bracket, and the upper surface of the guide rail soft belt forms a bracket plastic surface.

[0012] The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel as described above comprises the following steps:

[0013] S1: Grind the angle template guide rail working surface A and the angle template guide rail working surface B; make the angle of the angle blade measurement template consistent with the angle after grinding of the grinding wheel to be dressed;

[0014] S2: Install the electric spindle fixture on the optical platform, install the electric spindle into the electric spindle fixture; install the symmetrical double-conical surface forming grinding wheel sample on the electric spindle;

[0015] S3: Install the lifting platform on the optical platform; install the guide rail base plate on the lifting platform; install the angle sample guide rail on the guide rail base plate;

[0016] S4: Install the displacement measuring instrument into the sliding bracket; the probe of the displacement measuring instrument touches the conical surface of the symmetrical double-conical surface forming grinding wheel template; the sliding bracket moves on the guide rail bottom plate along the angle template guide rail working surface A and the angle template guide rail working surface B respectively, driving the probe of the displacement measuring instrument to continuously slide over the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel template, and recording the probe readings of the displacement measuring instrument at the symmetrical positions of the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel template; adjust the relative position of the angle template guide and the symmetrical double-conical surface forming grinding wheel template by the difference in the probe readings of the displacement measuring instrument at the symmetrical positions of the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel template, when the difference in the probe readings of the displacement measuring instrument at the symmetrical positions of the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel template are the same, the angle template guide cone angle bisector is collinear with the symmetrical double-conical surface forming grinding wheel template bisector;

[0017] S5: Remove the symmetrical double-cone-shaped grinding wheel sample from the electric spindle, install the grinding wheel to be dressed, take out the displacement measuring instrument from the sliding bracket, and install the threaded diamond pen into the fine-pitch elastic threaded hole of the sliding bracket;

[0018] S6: Push the sliding bracket to perform linear reciprocating motion on the guide rail bottom plate along the angle template guide rail working surface A and the angle template guide rail working surface B, thereby driving the threaded diamond pen to dress the conical surfaces on both sides of the grinding wheel to be dressed.

[0019] According to the method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel as described above, in step S1, the angle blade measurement template is placed in a tooth groove that has been processed by a symmetrical double-conical grinding wheel, the LED light is turned on, and the light gap through the template blade surface is used to determine whether the angle of the angle blade measurement template is consistent with the angle of the tooth groove that has been processed by the symmetrical double-conical grinding wheel. If they are inconsistent, the angle of the angle blade measurement template is trimmed by grinding the angle template guide rail working surface A and the angle template guide rail working surface B. When the width of the light gap through the template blade surface is consistent, the angle of the angle blade measurement template 7-4 is consistent with the angle of the tooth groove that has been processed by the symmetrical double-conical grinding wheel.

[0020] According to the method for dressing a grinding wheel with a manual dressing device for a symmetrical double-conical grinding wheel described above, in step S1, the flatness of the angle template guide working surface A, the angle template guide working surface B, and the angle template guide mounting surface are all less than 1μm; the straightness of the angle template guide working surface A and the angle template guide working surface B are both less than 0.3μm; the perpendicularity of the angle template guide mounting surface and the angle template guide working surface A and the angle template guide working surface B are both less than 1μm.

[0021] According to the above method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel, step S3 comprises the following steps:

[0022] S3.1: Set the lifting platform on the optical platform by screw connection, ensuring that the probe of the displacement measuring instrument can touch the conical surface of the symmetrical double-conical forming grinding wheel sample;

[0023] S3.2: Set the guide rail base plate on the lifting platform by screw connection, and then set the angle template guide rail on the guide rail base plate.

[0024] According to the method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel described above, in step S3: the flatness of the top surface 6-1 of the guide rail base plate and the bottom surface 6-2 of the guide rail base plate are both <1μm, and the parallelism of the top surface 6-1 of the guide rail base plate and the bottom surface 6-2 of the guide rail base plate are both <1μm.

[0025] According to the above method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel, step S4 comprises the following steps:

[0026] S4.1: The displacement measuring instrument measures the left cone data of the symmetrical double cone forming grinding wheel sample;

[0027] The displacement measuring instrument is set in the elastic inner hole of the sliding bracket, and then the bracket plastic surface and the bracket lateral working surface A are respectively contacted with the angle template guide rail working surface A and the guide rail bottom plate top surface, and the auxiliary push surface is manually pressed to push the sliding bracket so that the probe of the displacement measuring instrument passes through the first, middle and tail positions of the left cone surface of the symmetrical double cone molding grinding wheel template in turn, and the readings of the probe of the displacement measuring instrument at the three positions of the left cone surface are recorded;

[0028] S4.2: The displacement measuring instrument 10 measures the right cone surface data of the symmetrical double cone forming grinding wheel sample 11;

[0029] Symmetrically rotate the sliding bracket so that the bracket plastic surface and the bracket lateral working surface B are in contact with the angle template guide rail working surface B and the guide rail bottom plate top surface respectively, press the booster pressing surface, push the sliding bracket, and make the probe of the displacement measuring instrument pass through the first, middle and tail positions of the right cone surface of the symmetrical double cone surface forming grinding wheel template and the first, middle and tail positions of the left cone surface of the symmetrical double cone surface forming grinding wheel template in sequence, and record the readings of the three positions of the right cone surface;

[0030] S4.3: Calculate the difference between the readings at the three positions of the left cone surface and the readings at the three positions of the right cone surface respectively, and adjust the relative position of the angle template guide and the symmetrical double-cone forming grinding wheel template according to the difference between the readings at the three positions: loosen the fixing screws of the guide rail base plate, place the adjustment pressure plates on both sides of the guide rail base plate, install the precision adjustment screws in the inner holes of the pressure plate, install the screws in the countersunk holes of the pressure plate, fix the adjustment pressure plate, and tighten the precision adjustment screws at the same time. Turn the four precision adjustment screws to adjust the position of the guide rail base plate, thereby reducing the difference between the readings at the three positions. When the difference between the readings at the three positions is consistent, the angle template guide cone angle bisector is collinear with the bisector of the symmetrical double-cone forming grinding wheel template. At this time, the symmetry reference adjustment of the angle template guide is completed, tighten the screws on the guide rail base plate to fix it, and remove the adjustment pressure plate and precision threaded nails.

[0031] According to the method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel described above, in step S4: the flatness of the bracket plastic surface, the bracket lateral working surface A, and the bracket lateral working surface B are all <1μm; the perpendicularity of the bracket plastic surface and the bracket lateral working surface A, and the bracket lateral working surface B are all <1μm.

[0032] According to the above-mentioned method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel, step S6 comprises the following steps:

[0033] S6.1: The plastic surface of the bracket and the lateral working surface B of the bracket are respectively in contact with the working surface A of the angle template guide rail and the top surface of the guide rail bottom plate, and the auxiliary push pressing surface is pressed to push the sliding bracket to make a linear reciprocating motion along the working surface A of the angle template guide rail to dress the left conical surface of the grinding wheel to be dressed;

[0034] S6.2: The plastic surface of the bracket and the lateral working surface A of the bracket are respectively brought into contact with the working surface B of the angle template guide rail and the top surface of the guide rail bottom plate, and the sliding bracket is pushed to perform linear reciprocating motion along the working surface B of the angle template guide rail to dress the right conical surface of the grinding wheel to be dressed;

[0035] S6.3: Use a flat-blade screwdriver to turn the drive slot at the rear end of the threaded diamond pen to complete the feeding of the threaded diamond pen, and then repeat steps S6.1 and S6.2 until the symmetrical double-conical surface of the grinding wheel to be dressed is finished.

[0036] The advantages of the present invention compared with the prior art are:

[0037] 1. The present invention adopts a dressing device composed of a cone-symmetrical angle template guide rail, a guide rail base plate, a threaded diamond pen and a sliding bracket. An angle knife edge measurement template is integrated in the angle template guide rail to make the cone angle of the double-cone grinding wheel after dressing consistent with the tooth profile angle of the gear tooth it is processing.

[0038] 2. The slide bracket of the present invention is adhered with a guide rail soft belt with laser texture, which is beneficial to reduce the creeping and vibration generated when the slider bracket moves, and improves the finishing accuracy of the device.

[0039] 3. The present invention uses a displaceable measuring instrument. When installing the angle template guide rail, the cone angle bisector of the angle template guide rail is made to coincide with the cone angle bisector of the grinding wheel to be ground, so as to solve the problem of different angles of the two cone surfaces after the grinding wheel is dressed.

[0040] The device has the advantages of simple structure, convenient operation and high dressing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of a symmetrical double-conical grinding wheel dressing device.

[0042] Figure 2 This is a schematic diagram of the guide rail base structure.

[0043] Figure 3 This is a schematic diagram of the angle template guide structure.

[0044] Figure 4 This is a partial enlarged view of the angle knife edge measurement template.

[0045] Figure 5 This is a schematic diagram of the sliding bracket structure.

[0046] Figure 6 This is a schematic diagram of the back structure of the sliding bracket.

[0047] Figure 7 Schematic diagram of the threaded diamond pen structure.

[0048] Figure 8 This is a schematic diagram of the guide rail base plate posture adjustment.

[0049] Fig. 9 Schematic diagram of adjusting the pressure plate structure.

[0050] Fig.10 This is a schematic diagram of the indexing plate gear measurement.

[0051] In the figure: 1: electric spindle fixture; 2: electric spindle; 3: grinding wheel to be dressed; 4: optical platform; 5: lifting platform; 6: guide rail base plate; 6-1: top surface of guide rail base plate; 6-2: bottom surface of guide rail base plate; 6-3: threaded hole of base plate; 6-4: countersunk hole of base plate; 7: angle template guide rail; 7-1: working surface A of angle template guide rail; 7-2: working surface B of angle template guide rail; 7-3: countersunk hole of template guide rail; 7-4: angle knife edge measurement template; 7-5: installation surface of angle template guide rail; 7-6: chamfered surface of template; 7-7: knife edge surface of template; 8: sliding bracket; 8-1: bracket sticker Plastic surface; 8-2: Lateral working surface A of the bracket; 8-3: Lateral working surface B of the bracket; 8-4: Elastic inner hole; 8-5: Fine-pitch elastic threaded hole; 8-6: Elastic deformation zone; 8-7: Boost pressing surface; 9: Threaded diamond pen; 9-1 Fine-pitch feed thread; 9-2: Driving slot; 10: Displacement measuring instrument; 11: Symmetrical double-conical molding grinding wheel template; 12: Dividing plate; 13: Precision adjustment screw; 14: Adjustment plate; 14-1: Upper adjustment plate; 14-2: Lower adjustment plate; 14-3: Plate countersunk hole; 14-4: Plate inner hole; 15: LED light. DETAILED DESCRIPTION

[0052] Preferred embodiment 1

[0053] like Fig.10 As shown: the grinding wheel 3 to be dressed in this embodiment is used to process the gear teeth of the dividing plate 12 after dressing.

[0054] like Figure 1 , Figure 2As shown: a manual dressing device for a symmetrical double-cone grinding wheel, comprising an optical platform 4; a threaded diamond pen 9 for dressing a grinding wheel 3 to be dressed; a displacement measuring instrument 10 for debugging the position of the threaded diamond pen 9 before dressing the grinding wheel 3 to be dressed, a symmetrical double-cone molding grinding wheel template 11 and an adjustment plate 14; a lifting platform 5 is arranged on the optical platform 4; a guide rail base plate 6 is arranged on the lifting platform 5; an angle template guide rail 7 and a sliding bracket 8 are arranged on the guide rail base plate 6; one end of the sliding bracket 8 can clamp the threaded diamond pen 9, and the other end can clamp the displacement measuring instrument 10; an electric spindle fixture 1 is also arranged on the optical platform 4; the electric spindle fixture 1 is provided with an electric spindle 2 for mounting the grinding wheel 3 to be dressed and the symmetrical double-cone molding grinding wheel template 11; the adjustment plate 14 is provided with a precision adjustment screw 13;

[0055] like Figure 3 As shown: the angle template guide rail 7 is provided with an angle knife edge measuring template 7-4 which can ensure the cone angle accuracy of the double cone surface of the grinding wheel 3 to be dressed after dressing;

[0056] When installing the angle template guide rail 7, the position of the angle template guide rail 7 can be adjusted by the displacement measuring instrument 10 so that its cone angle bisector coincides with the cone angle bisector of the grinding wheel 3 to be dressed;

[0057] The sliding bracket 8 slides along the angle template guide rail 7 and the guide rail bottom plate 6, thereby driving the threaded diamond pen 9 to dress the double cone surface of the grinding wheel 3 to be dressed.

[0058] The electric spindle fixture 1 is installed on the optical platform 4 through screw connection, and its function is to fix the electric spindle 2. The grinding wheel 3 to be dressed is also installed on the electric spindle 2 through screw connection, and the electric spindle 2 drives the grinding wheel 3 to be dressed to rotate.

[0059] The parallelism between the axis of the electric spindle fixture and its mounting surface is less than 1μm.

[0060] The lifting platform 5 is installed on the optical platform 4 by screw connection, the guide rail base plate 6 is set on the lifting platform 5 by screw connection, the angle template guide rail 7 is installed on the guide rail base plate 6 by screw connection, and the bracket plastic surface 8-1 of the sliding bracket 8 is in surface contact with the top surface 6-1 of the guide rail base plate; when the bracket lateral working surface A8-2 is in surface contact with the angle template guide rail working surface A7-1, the sliding bracket 8 can make a linear reciprocating motion on the top surface 6-1 of the guide rail base plate along the angle template guide rail working surface A7-1; when the bracket lateral working surface A8-2 is in surface contact with the angle template guide rail working surface A7-1, the sliding bracket 8 can make a linear reciprocating motion on the top surface 6-1 of the guide rail base plate along the angle template guide rail working surface A7-1; When the working surface B8-3 is in contact with the working surface B7-2 of the angle template guide rail, the sliding bracket 8 can make a linear reciprocating motion on the top surface 6-1 of the guide rail base plate along the working surface B7-2 of the angle template guide rail; the threaded diamond pen 9 is installed on the sliding bracket 8 through a threaded connection, and makes a linear reciprocating motion on the top surface 6-1 of the guide rail base plate along the working surface A7-1 of the angle template guide rail and the working surface B7-2 of the angle template guide rail, respectively, and the pen tip of the threaded diamond pen 9 is used to dress the conical surfaces on both sides of the grinding wheel 3 to be dressed.

[0061] like Figure 8 As shown: a bottom plate countersunk hole 6-4 and two bottom plate threaded holes 6-3 are provided on the guide rail bottom plate 6, the bottom plate countersunk hole 6-4 is used for connecting the guide rail bottom plate 6 with the lifting platform 5, and the bottom plate threaded hole 6-3 is used for installing the guide rail bottom plate 6 with the angle template guide rail 7; the flatness of the bottom surface 6-2 of the guide rail bottom plate is less than 1μm, and the parallelism between the bottom surface 6-2 of the guide rail bottom plate and the top surface 6-1 of the guide rail bottom plate is less than 1μm.

[0062] like Figure 3 , Figure 4As shown: the angle template guide rail 7 is in the shape of an isosceles triangle plate, and the angle of its vertex angle is consistent with the angle of the gear teeth of the dividing plate 12; two template guide countersunk holes 7-3 are arranged on the angle template guide rail 7, and the angle template guide rail 7 is installed on the guide rail base plate 6 through the two template guide countersunk holes 7-3; a 1-3 mm thick angle knife edge measurement template 7-4 is arranged on the top of the angle template guide rail 7, and two template knife edge surfaces 7-7 are processed by chamfering on the edges of the angle knife edge measurement template 7-4, and the two template knife edge surfaces 7-7 are coplanar with the angle template guide working surface A7-1 and the angle template guide working surface B7-2 respectively; the template knife edge surface 7-7 is arranged in the gear teeth of the dividing plate 12, and the vertex angle of the angle knife edge measurement template 7-4 and the gear tooth angle of the dividing plate 12 are checked by the light gap method. Whether the degrees are consistent; by grinding the angle template guide working surface A7-1 and the angle template guide working surface B7-2, the top angle of the angle knife edge measuring template 7-4 is consistent with the angle template guide working surface A7-1 and the angle template guide working surface B7-2, so as to ensure that the cone angle of the grinding wheel after dressing is consistent with the tooth profile angle of the dividing plate 12; the flatness of the angle template guide mounting surface 7-5 and the angle template guide working surface A7-1 and the angle template guide working surface B7-2 are both less than 1μm; the verticality between the angle template guide working surface A7-1 and the angle template guide working surface B7-2 and the angle template guide mounting surface 7-5 is less than 1μm; the straightness of the angle template guide working surface A7-1 and the angle template guide working surface B7-2 is less than 0.3μm.

[0063] like Figures 5 and 6As shown: both ends of the sliding bracket 8 for installing the threaded diamond pen 9 and the displacement measuring instrument 10 are provided with elastic deformation areas 8-6; the outer sides of the two elastic deformation areas 8-6 are also provided with elastic inner holes 8-4 and fine-pitch elastic threaded holes 8-5 respectively; the elastic inner hole 8-4 is used to clamp the displacement measuring instrument 10, and the fine-pitch elastic threaded hole 8-5 is used to connect the threaded diamond pen 9, and the sliding bracket 8 is also provided with two clamping threaded holes, which are respectively used to lock the displacement measuring instrument 10 in the elastic inner hole 8-4 and the threaded diamond pen 9 in the fine-pitch elastic threaded hole 8-5; a guide rail soft belt with laser texture is adhered to the positive working surface of the sliding bracket 8, and the surface of the guide rail soft belt serves as the sliding bracket 8 Bracket plastic surface 8-1; the flatness of the bracket plastic surface 8-1, bracket lateral working surface A8-2, and bracket lateral working surface B8-3 of the sliding bracket 8 are all less than 1μm; the verticality between the bracket plastic surface 8-1 and the bracket lateral working surface A8-2 and the bracket lateral working surface B8-3 are respectively less than 1μm; the sliding bracket 8 is provided with a boosting pressing surface 8-7, which makes the bracket plastic surface 8-1, the bracket lateral working surface A8-2, and the bracket lateral working surface B8-3 better fit with the guide rail bottom plate top surface 6-1, the angle template guide rail working surface A7-1, and the angle template guide rail working surface B7-2 when the sliding bracket 8 is pushed, thereby improving the linear accuracy of the sliding bracket 8 moving along the angle template guide rail 7.

[0064] like Figure 7 As shown: one end of the threaded diamond pen 9 is provided with a fine pitch feed thread 9-1 that cooperates with the fine pitch elastic thread hole 8-5 on the sliding bracket 8, which is used for the threaded diamond pen 9 to form a threaded connection with the sliding bracket 8, and a driving groove 9-2 is provided on one end face of the threaded diamond pen 9, and the threaded diamond pen 9 is screwed through the driving groove 9-2 to realize the feed movement of the threaded diamond pen 9; the shape of the driving groove 9-2 can be a straight line, a cross, a triangle, a plum blossom, or a hexagonal socket; the material of the threaded diamond pen 9 is a single particle diamond or a powder sintered diamond, and the shape of the pen tip of the threaded diamond pen 9 is conical or spherical.

[0065] Adjustment plates 14 are provided on both sides of the guide rail base plate 6. Two pressure plate inner holes 14-4 and three pressure plate countersunk holes 14-3 are provided on the adjustment plate 14. The pressure plate inner hole 14-4 is used to install the precision adjustment screw 13, and the pressure plate countersunk hole 14-3 is used to adjust the connection between the pressure plate 14 and the lifting platform 5. The adjustment plate 14 is divided into an upper and lower pressure plate: an upper adjustment plate 14-1 and a lower adjustment plate 14-2; when the adjustment plate 14 is fixed by the screws through the pressure plate countersunk hole 14-3, the pressure plate inner hole 14-4 will also hold the precision adjustment screw 13 therein; the precision adjustment screw 13 adopts a fine thread pair with a pitch of 0.2mm-0.5mm, which is used to fine-tune the position of the angle template guide rail 7 so that the cone angle bisector of the angle template guide rail 7 coincides with the cone angle bisector of the grinding wheel 3 to be dressed.

[0066] The method for using the manual dressing device for a symmetrical double-conical grinding wheel in this embodiment is specifically implemented in the following steps:

[0067] Step 1: If Fig.10 As shown: first set the angle knife edge measurement template 7-4 to the tooth groove of the indexing plate 12, turn on the LED light 15, and judge whether the angle of the angle knife edge measurement template 7-4 is consistent with the angle of the tooth groove of the indexing plate 12 according to the light gap through the template knife edge surface 7-7. If not, control the angle of the angle knife edge measurement template 7-4 by grinding the angle template guide rail working surface A7-1 and the angle template guide rail working surface B7-2. When the width of the light gap through the template knife edge surface 7-7 is consistent, it means that the angle of the angle knife edge measurement template 7-4 is consistent with the angle of the tooth groove of the indexing plate 12.

[0068] The flatness of the angle template guide working surface A7-1, the angle template guide working surface B7-2 and the angle template guide mounting surface 7-5 are all controlled by grinding and are less than 1μm; the straightness of the angle template guide working surface A7-1 and the angle template guide working surface B7-2 are all controlled by grinding and are less than 0.3μm; the perpendicularity of the angle template guide mounting surface 7-5 and the angle template guide working surface A7-1 and the angle template guide working surface B7-2 are all controlled by grinding and are less than 1μm.

[0069] Step 2: Screw the electric spindle fixture 1 onto the optical platform 4 , then install the electric spindle 2 into the electric spindle fixture 1 , and then install the symmetrical double-conical molded grinding wheel template 11 onto the electric spindle 2 .

[0070] Step three: Screw the lifting platform 5 to the optical platform 4 to ensure that when measuring the data of the symmetrical double-cone forming grinding wheel template 11 later, the probe of the displacement measuring instrument 10 can touch the conical surface of the symmetrical double-cone forming grinding wheel template 11, and then install the guide rail base plate 6 on the lifting platform 5 by screw connection, and then install the angle template guide rail 7 on the guide rail base plate 6; wherein, the flatness of the top surface 6-1 and the bottom surface 6-2 of the guide rail base plate are controlled by grinding to be less than 1μm; the parallelism of the top surface 6-1 and the bottom surface 6-2 of the guide rail base plate are controlled by grinding to be less than 1μm.

[0071] Step 4: If Figure 8As shown: install the displacement measuring instrument 10 into the elastic inner hole 8-4 of the sliding bracket 8, then make the bracket plastic surface 8-1 and the bracket lateral working surface A8-2 form surface contact with the angle template guide rail working surface A7-1 and the guide rail bottom plate top surface 6-1 respectively, manually press the auxiliary pressing surface 8-7, push the sliding bracket 8, so that the probe of the displacement measuring instrument 10 passes through the first, middle and tail positions of the left cone surface of the symmetrical double-conical surface forming grinding wheel template 11 in turn, and record the readings of the three positions of the left cone surface: L1, L2, L3; wherein, the flatness of the bracket plastic surface 8-1, the bracket lateral working surface A8-2, and the bracket lateral working surface B8-3 are all controlled by grinding to be less than 1μm; the verticality of the bracket plastic surface 8-1 and the bracket lateral working surface A8-2 and the bracket lateral working surface B8-3 are all controlled by grinding to be less than 1μm.

[0072] Symmetrically rotate the sliding bracket 8 so that the bracket plastic surface 8-1 and the bracket lateral working surface B8-3 form surface contact with the angle template guide rail working surface B7-2 and the guide rail bottom plate top surface 6-1 respectively, press the booster pressing surface 8-7, push the sliding bracket 8, and make the probe of the displacement measuring instrument 10 pass through the first, middle and tail positions of the right side cone surface of the symmetrical double-cone molded grinding wheel template 11 and the first, middle and tail positions of the left side cone surface of the symmetrical double-cone molded grinding wheel template 11 in turn, and record the readings of the three positions on the right side cone surface: R1, R2, R3.

[0073] Calculate the differences of the three readings of the left cone surface and the three readings of the right cone surface at the front, middle and tail symmetrical positions on the side of the grinding wheel template: L1-R1, L2-R2, L3-R3, and fine-tune the relative position of the angle template guide rail 7 and the symmetrical double-cone molding grinding wheel template 11 according to the three reading differences. At this time, loosen the screws fixing the guide rail base plate 6, place adjustment plates 14 on both sides of the guide rail base plate 6, install precision adjustment screws 13 in the inner hole 14-4 of the pressure plate, and install the precision adjustment screws 13 in the countersunk hole 14-3 of the pressure plate. Install the pressure plate screws, fix the adjustment pressure plate 14, and tighten the precision adjustment screws 13 at the same time. Turn the four precision adjustment screws 13 respectively to adjust the position of the guide rail base plate 6, thereby reducing the three reading differences. When the three reading differences are the same, the cone angle bisector of the angle template guide rail 7 is collinear with the bisector of the symmetrical double-cone forming grinding wheel template 11. At this time, the symmetry reference adjustment of the angle template guide rail 7 is completed. Tighten the guide rail base plate screws on the guide rail base plate 6 to fix it, and remove the adjustment pressure plate 14 and the precision threaded nails 13.

[0074] Step 5: Remove the symmetrical double-cone molded grinding wheel template 11 from the electric spindle 2, then install the grinding wheel 3 to be dressed, take out the displacement measuring instrument 10 from the sliding bracket 8, and install the threaded diamond pen 9 into the fine-pitch elastic threaded hole 8-5 through a threaded connection.

[0075] Step 6: Make the bracket plastic surface 8-1 and the bracket lateral working surface B8-3 form surface contact with the angle template guide rail working surface A7-1 and the guide rail bottom plate top surface 6-1 respectively, press the booster pressing surface 8-7, push the sliding bracket 8 to make a linear reciprocating motion along the angle template guide rail working surface A7-1, and start dressing the left conical surface of the grinding wheel 3 to be dressed;

[0076] The bracket plastic surface 8-1 and the bracket lateral working surface A8-2 will form surface contact with the angle template guide rail working surface B7-2 and the guide rail bottom plate top surface 6-1 respectively, pushing the sliding bracket 8 to make linear reciprocating motion along the angle template guide rail working surface B7-2 to start dressing the right conical surface of the grinding wheel 3 to be dressed.

[0077] Use a flat screwdriver to turn the drive slot 9-2 at the rear end of the threaded diamond pen 9 to determine the feed amount, complete the feed action, and then repeat steps one and two until the symmetrical double-conical surface of the grinding wheel 3 to be dressed is finished.

[0078] In addition, the processing process of the adjustment pressure plate 14 is as follows: first, a pressure plate countersunk hole 14-3 and a pressure plate inner hole 14-4 are processed in the adjustment pressure plate 14; then, wire cutting is used to process the middle part of the adjustment pressure plate 14 into an upper adjustment pressure plate 14-1 and a lower adjustment pressure plate 14-2. In this way, it can be ensured that the pressure plate countersunk hole 14-3 and the pressure plate inner hole 14-4 in the upper adjustment pressure plate 14-1 and the lower adjustment pressure plate 14-2 correspond to each other, and have high positioning accuracy. At the same time, the wire cutting process will remove a certain amount of excess, so that when the pressure plate screw is installed in the pressure plate countersunk hole 14-3, the adjustment pressure plate 14 can be fixed, and at the same time, the precision adjustment screw 13 can be clamped.

[0079] 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. A manual dressing device for a symmetrical double-conical grinding wheel, characterized in that: The invention comprises an optical platform (4); a threaded diamond pen (9) for dressing a grinding wheel (3); a displacement measuring instrument (10) for adjusting the position of the threaded diamond pen (9) before dressing the grinding wheel (3); a symmetrical double-cone-shaped grinding wheel sample (11) and an adjusting plate (14); a lifting platform (5) is arranged on the optical platform (4); a guide rail base plate (6) is arranged on the lifting platform (5); an angle sample guide rail (7) and a sliding bracket (8) are arranged on the guide rail base plate (6); one end of the sliding bracket (8) can clamp the threaded diamond pen (9) and the other end can clamp the displacement measuring instrument (10); an electric spindle fixture (1) is also arranged on the optical platform (4); an electric spindle (2) for mounting the grinding wheel (3) and the symmetrical double-cone-shaped grinding wheel sample (11) is arranged on the electric spindle fixture (1); a precision adjusting screw (13) is arranged on the adjusting plate (14); An angle blade measuring template (7-4) is provided on the angle template guide rail (7) to ensure the cone angle accuracy of the double cone surface of the grinding wheel (3) to be dressed after dressing; When installing the angle template guide rail (7), the position of the angle template guide rail (7) can be adjusted by means of a displacement measuring instrument (10) so that its cone angle bisector coincides with the cone angle bisector of the grinding wheel (3) to be dressed; The sliding bracket (8) slides along the angle template guide rail (7) and the guide rail bottom plate (6), thereby driving the threaded diamond pen (9) to dress the double cone surface of the grinding wheel (3) to be dressed.

2. The manual dressing device for a symmetrical double-cone grinding wheel according to claim 1, characterized in that: The angle template guide rail (7) is in the shape of an isosceles triangle plate, and the angle of its top angle is consistent with the angle of the grinding wheel (3) to be dressed after dressing; the top of the angle template guide rail (7) is provided with an angle knife edge measurement template (7-4) in the shape of an isosceles triangle plate with a thickness of 1 to 3 mm, and two template knife edge surfaces (7-7) are chamfered on the edges of the angle knife edge measurement template (7-4), and the two template knife edge surfaces (7-7) are respectively coplanar with the angle template guide rail working surface A (7-1) and the angle template guide rail working surface B (7-2) of the angle template guide rail (7); a guide rail soft belt with laser texture is adhered to the sliding bracket (8), and the upper surface of the guide rail soft belt forms a bracket plastic surface (8-1).

3. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-cone grinding wheel according to claim 2, characterized in that: The following steps are involved: S1: Grinding the angle template guide rail working surface A (7-1) and the angle template guide rail working surface B (7-2); making the angle of the angle blade measuring template (7-4) consistent with the angle of the grinding wheel (3) to be dressed after grinding; S2: Installing an electric spindle fixture (1) on an optical platform (4), installing an electric spindle (2) into the electric spindle fixture (1); installing a symmetrical double-conical surface forming grinding wheel sample (11) on the electric spindle (2); S3: Installing a lifting platform (5) on the optical platform (4); installing a guide rail base plate (6) on the lifting platform (5); and installing an angle sample guide rail (7) on the guide rail base plate (6); S4: Install the displacement measuring instrument (10) into the sliding bracket (8); the probe of the displacement measuring instrument (10) touches the conical surface of the symmetrical double-conical surface forming grinding wheel sample (11); the sliding bracket (8) moves on the guide rail bottom plate (6) along the angle sample guide rail working surface A (7-1) and the angle sample guide rail working surface B (7-2), respectively, driving the probe of the displacement measuring instrument (10) to continuously slide over the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel sample (11), and recording the symmetrical positions of the conical surfaces on both sides of the symmetrical double-conical surface forming grinding wheel sample (11). The relative position of the angle template guide rail (7) and the symmetrical double-cone surface forming grinding wheel template (11) is adjusted by the difference in the displacement measuring instrument (10) readings at symmetrical positions of the cone surfaces on both sides of the symmetrical double-cone surface forming grinding wheel template (11), and when the differences in the displacement measuring instrument (10) readings at symmetrical positions of the cone surfaces on both sides of the symmetrical double-cone surface forming grinding wheel template (11) are the same, the cone angle bisector of the angle template guide rail (7) and the bisector of the symmetrical double-cone surface forming grinding wheel template (11) are collinear; S5: Remove the symmetrical double-cone molded grinding wheel sample (11) from the electric spindle (2), then install the grinding wheel to be dressed (3), take out the displacement measuring instrument (10) from the sliding bracket (8), and install the threaded diamond pen (9) into the fine-pitch elastic threaded hole (8-5) of the sliding bracket (8); S6: Push the sliding bracket (8) to perform linear reciprocating motion on the guide rail base plate (6) along the angle template guide rail working surface A (7-1) and the angle template guide rail working surface B (7-2), thereby driving the threaded diamond pen (9) to respectively trim the conical surfaces on both sides of the grinding wheel (3) to be trimmed.

4. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 3, characterized in that: In step S1, the angle blade measurement template (7-4) is placed in a tooth groove that has been processed by a symmetrical double-cone grinding wheel, and the LED light (15) is turned on. It is determined whether the angle of the angle blade measurement template (7-4) is consistent with the angle of the tooth groove that has been processed by the symmetrical double-cone grinding wheel based on the light gap through the template blade surface (7-7). If they are inconsistent, the angle of the angle blade measurement template (7-4) is trimmed by grinding the angle blade guide working surface A (7-1) and the angle blade guide working surface B (7-2). When the width of the light gap through the template blade surface (7-7) is consistent, the angle of the angle blade measurement template 7-4 is consistent with the angle of the tooth groove that has been processed by the symmetrical double-cone grinding wheel.

5. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 4, characterized in that: In step S1, the flatness of the angle template guide working surface A (7-1), the angle template guide working surface B (7-2), and the angle template guide mounting surface (7-5) are all less than 1 μm; the straightness of the angle template guide working surface A (7-1) and the angle template guide working surface B (7-2) are all less than 0.3 μm; the perpendicularity of the angle template guide mounting surface (7-5) and the angle template guide working surface A (7-1) and the angle template guide working surface B (7-2) are all less than 1 μm.

6. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 5, characterized in that: Step S3 includes the following steps: S3.1: The lifting platform (5) is set on the optical platform (4) by screw connection, ensuring that the probe of the displacement measuring instrument (10) can touch the conical surface of the symmetrical double-conical surface forming grinding wheel sample (11); S3.2: The guide rail base plate (6) is set on the lifting platform (5) by screw connection, and then the angle template guide rail (7) is set on the guide rail base plate (6).

7. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 6, characterized in that: In step S3: the flatness of the top surface 6-1 and the bottom surface 6-2 of the guide rail bottom plate is both less than 1 μm, and the parallelism of the top surface 6-1 and the bottom surface 6-2 of the guide rail bottom plate is both less than 1 μm.

8. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 7, characterized in that: Step S4 includes the following steps: S4.1: The displacement measuring instrument (10) measures the left cone surface data of the symmetrical double cone surface forming grinding wheel sample (11); The displacement measuring instrument (10) is arranged in the elastic inner hole (8-4) of the sliding bracket (8), and then the bracket plastic surface (8-1) and the bracket lateral working surface A (8-2) are respectively contacted with the angle template guide rail working surface A (7-1) and the guide rail bottom plate top surface (6-1), and the auxiliary push pressing surface (8-7) is manually pressed to push the sliding bracket (8) so that the probe of the displacement measuring instrument (10) passes through the first, middle and tail positions of the left cone surface of the symmetrical double cone surface molding grinding wheel template (11) in sequence, and the readings of the probe of the left cone surface displacement measuring instrument (10) at the three positions are recorded; S4.2: The displacement measuring instrument 10 measures the right cone surface data of the symmetrical double cone forming grinding wheel sample 11; The sliding bracket (8) is symmetrically rotated so that the bracket plastic surface (8-1) and the bracket lateral working surface B (8-3) are respectively in contact with the angle template guide rail working surface B (7-2) and the guide rail bottom plate top surface (6-1), and the auxiliary push surface (8-7) is pressed to push the sliding bracket (8) so that the probe of the displacement measuring instrument (10) passes through the first, middle and tail positions of the right side conical surface of the symmetrical double-conical surface forming grinding wheel template (11) and the first, middle and tail positions of the left side conical surface of the symmetrical double-conical surface forming grinding wheel template (11) in sequence, and the readings of the three positions of the right side conical surface are recorded; S4.3: Calculate the difference between the readings at the three positions on the left cone surface and the readings at the three positions on the right cone surface respectively, and adjust the relative position of the angle template guide rail (7) and the symmetrical double-cone forming grinding wheel template (11) according to the difference between the readings at the three positions: Loosen the fixing screws of the guide rail base plate (6), place the adjustment pressure plate (14) on both sides of the guide rail base plate (6), install the precision adjustment screw (13) in the inner hole (14-4) of the pressure plate, install the screw in the countersunk hole (14-3) of the pressure plate, and fix the adjustment pressure plate (14). 4), tighten the precision adjustment screws (13) at the same time, and turn the four precision adjustment screws (13) respectively to adjust the position of the guide rail base plate (6), thereby reducing the difference between the three position readings. When the difference between the three position readings is consistent, the cone angle bisector of the angle template guide rail (7) and the bisector of the symmetrical double cone molding grinding wheel template (11) are collinear. At this time, the symmetry reference adjustment of the angle template guide rail (7) is completed, and the screws on the guide rail base plate (6) are tightened to fix it, and the adjustment pressure plate (14) and the precision screw nails (13) are removed.

9. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 8, characterized in that: In step S4: the flatness of the bracket plastic surface (8-1), the bracket lateral working surface A (8-2), and the bracket lateral working surface B (8-3) are all less than 1μm; the verticality of the bracket plastic surface (8-1) and the bracket lateral working surface A (8-2), and the bracket lateral working surface B (8-3) are all less than 1μm.

10. The method for dressing a grinding wheel using a manual dressing device for a symmetrical double-conical grinding wheel according to claim 9, characterized in that: Step S6 includes the following steps: S6.1: The support plastic surface (8-1) and the support lateral working surface B (8-3) are respectively brought into surface contact with the angle template guide rail working surface A (7-1) and the guide rail bottom plate top surface (6-1), and the auxiliary push pressing surface (8-7) is pressed to push the sliding support (8) to make a linear reciprocating motion along the angle template guide rail working surface A (7-1), so as to dress the left conical surface of the grinding wheel (3) to be dressed; S6.2: The support plastic surface (8-1) and the support lateral working surface A (8-2) are respectively brought into surface contact with the angle template guide rail working surface B (7-2) and the guide rail bottom plate top surface (6-1), and the sliding support (8) is pushed to perform linear reciprocating motion along the angle template guide rail working surface B (7-2) to dress the right conical surface of the grinding wheel (3) to be dressed; S6.3: Use a flat screwdriver to turn the drive slot (9-2) at the rear end of the threaded diamond pen (9) to complete the feeding of the threaded diamond pen (9), and then repeat steps S6.1 and S6.2 until the symmetrical double-conical surface of the grinding wheel (3) to be dressed is finished.

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