Roll collar high-precision slotting machining method and machining equipment

Abstract

The invention relates to the technical field of roll collar machining, in particular to a roll collar high-precision slotting machining method and machining equipment. The high-precision grooving machining method for the roll collar comprises the following steps that S1, the roll collar is arranged on a central spindle in a sleeving mode, and the inner circle face of the roll collar abuts against the outer circle face of the central spindle; s2, a probe of a contourgraph is put on the outer circle face of the roller ring, namely the initial point of the probe; s3, a probe of the contourgraph is driven by a first moving module capable of moving in the direction perpendicular to the axis of the roll collar to move in the horizontal direction close to the outer circle face of the roll collar, and the highest point position, namely the highest point of the outer circle face of the roll collar, of the probe in the moving process is recorded; and S4, feeding, machining and slotting for the first time, and retreating after machining is completed. The device has the advantage that the groove edge distance can be accurately controlled so as to ensure the production precision of the roll collar.

Description

Technical Field

[0001] The invention relates to the technical field of roller ring processing, and in particular to a roller ring high-precision grooving processing method and processing equipment. Background Art

[0002] A Chinese patent application with application number 202322230937.5 discloses a roller ring grooving device, comprising a fixture and a driving mechanism, wherein a profiling member is provided on one axial side of the fixture, and the profiling member is provided with a groove-shaped profiling portion and an end face profiling portion, the end face profiling portion of the profiling member corresponds to the end face of the roller ring workpiece, and the groove-shaped profiling portion of the profiling member corresponds to the groove required to be processed of the roller ring workpiece, and a slide table capable of moving axially and radially along the fixture is provided on one side of the fixture, and a processing tool for processing the roller ring workpiece spaced along the axial direction of the fixture and a tracking member cooperating with the profiling member are provided on the slide table.

[0003] In the above technical scheme, the processing tool and the tracking head are connected by a connecting piece, and the tracking head in the previous groove is used to guide the next turning tool for rough processing. The tracking head can roll along the contour in the groove-shaped profiling part to ensure the position of the processed groove on the roller ring workpiece, while avoiding wear of the tracking head and the groove-shaped profiling part. However, in the above technical scheme, the arc radius and groove depth of the groove along the axial section of the roller ring can only be distinguished by using the tracking head located in the groove to rotate relative to the roller ring in the circumferential direction, and the groove margin cannot be accurately detected in the fine processing. The groove margin after the existing roller ring groove (that is, the distance between the center position of the groove bottom and the axial end face of the roller ring) needs to be manually compared and detected using a template, which is more dependent on the experience and skills of the processing personnel and cannot guarantee the accuracy of the detection result. Once the processing personnel consumes the groove allowance after multiple reworks, it will directly lead to the scrapping of the roller ring, which will increase production time and production costs, thereby affecting production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a high-precision grooving processing method and processing equipment for a roller ring, which can accurately control the groove margin to ensure the production accuracy of the roller ring.

[0005] To achieve the above object, the present invention discloses a high-precision grooving method for a roller ring, comprising the following steps: S1. Put the roller ring on the mandrel so that the inner surface of the roller ring is tightly against the outer surface of the mandrel; S2, place the probe of the profiler on the outer surface of the roller ring, which is the initial point of the probe; S3, driving the probe of the profiler to move in a horizontal direction close to the outer circumference of the roller ring through the first moving module in a direction perpendicular to the axis of the roller ring, and recording the highest point position of the probe during the movement, which is the highest point of the outer circumference of the roller ring; S4. Feed the tool and machine the first grooving. After machining is completed, retract the tool. S5. Drive the probe to move along the axial direction of the roll ring to the position of the other end face of the roll ring through the second moving module that can move along the direction parallel to the axis of the roll ring, so that the probe picks up the distance from the initial point to the grooving on the roll ring, and records the groove edge distance between the grooving and the other end face of the roll ring. S6. Adjust the axial position of the tool along the roll ring according to the groove edge distance obtained in step S5, and machine the grooving for the second time. S7. Remove the machined roll ring to complete the machining of the first grooving on the roll ring.

[0006] In the present invention, by controlling the movement of the profiler and positioning the probe of the profiler at the highest point of the roll ring, the profiler picks up the profile corresponding to the cross-section position of the roll ring diameter, so as to ensure the accuracy of the roll ring profile and the grooving profile picked up by the profiler probe. And by subsequently controlling the probe to move along the axial direction of the roll ring to position the groove edge distance at the required grooving position, and then ensuring the grooving position accuracy when controlling the tool to machine the grooving. Without relying on manual experience and skills, the machining accuracy can be ensured. The present invention has the advantages of being able to precisely control the groove edge distance to ensure the production accuracy of the roll ring.

[0007] Preferably, the second machining of the grooving in step S6 includes the following steps: S61. Feed the tool once and machine until there is still a margin from the preset grooving bottom, then retract the tool. S62. Repeat step S5, and then use the profiler probe to obtain the roll ring profile after machining in step S61, and determine the groove edge distance and the groove profile. S63. Feed the tool twice and machine the grooving according to the data obtained in step S62.

[0008] Compared with the method of machining the grooving with two feedings, the number of feedings required for machining the grooving is set to three, and there is a margin after the second machining, so as to cope with the machining deviation after the profiler has an error, prevent the roll ring from being scrapped due to the machining deviation of the roll ring, and thus increase the production cost.

[0009] Preferably, in step S61, it also includes retracting the tool after machining to a depth of at least 0.1 mm with a margin left.

[0010] By leaving a margin after the second machining to cope with the machining deviation after the profiler has an error, and using the remaining margin to further machine the grooving of the roll ring to correct the deviation of the grooving after the original machining, so that the grooving of the roll ring meets the machining dimensions, prevent the roll ring from being scrapped due to the machining deviation of the roll ring, and thus increase the production cost.

[0011] Preferably, the mandrel in the step S1 includes a large-diameter section and a small-diameter section. The outer cylindrical surface of the small-diameter section has a taper, and the roll ring is sleeved on the outer cylindrical surface of the small-diameter section of the mandrel.

[0012] By setting the small-diameter section of the mandrel to have a tapered form, after the inner cylindrical surface of the roll ring abuts against the outer cylindrical surface of the mandrel, due to the tapered outer cylindrical surface of the small-diameter section, the concentricity requirements of the processed roll ring with the inner and outer surfaces of the mandrel are ensured, preventing this step from affecting the depth accuracy of the machined slot.

[0013] A processing device for a high-precision slotting processing method of a roll ring includes a frame. On the frame, two center drills located in the axial direction of the roll ring are symmetrically arranged. A mandrel for the roll ring to be sleeved is clamped between the two center drills. On the frame, there is a grinding wheel that can feed in a direction perpendicular to the axis of the center drill. On the frame, there is also the first moving module. The power output end of the first moving module is fixedly provided with the second moving module. The power output end of the second moving module is fixedly provided with the profilometer. The first moving module can drive the second moving module to move in a direction perpendicular to the axis of the roll ring through the internally used lead screw and slider. The second moving module can drive the profilometer to move in a direction parallel to the axis of the roll ring through the internally used lead screw and slider. The profilometer can move along the surface of the roll ring and identify the profile and parameters of the roll ring.

[0014] When slotting on the roll ring needs to be processed, control the profilometer to move and position the probe of the profilometer at the highest point of the roll ring, and make the profilometer pick up the profile at the cross-sectional position corresponding to the diameter of the roll ring, so as to ensure the accuracy of the roll ring profile and the slot profile picked up by the profilometer probe. Then, by controlling the probe to move axially along the roll ring, position the slot edge distance at the required slotting position, and then ensure the slotting position accuracy when controlling the tool to process the slot.

[0015] Preferably, both the first moving module and the second moving module include a housing, a motorized lead screw arranged along the length direction of the housing. A slide table connected by threads is sleeved on the outer cylindrical surface of the motorized lead screw. On the housing, there is a power source for the motorized lead screw to rotate. On the housing, a limiting rod is arranged along the length direction of the housing, and the limiting rod penetrates through the slide table.

[0016] Through the motorized lead screw and the slide table threadedly connected to the motorized lead screw, the stability and displacement accuracy during the movement of the slide table are ensured, thereby ensuring the slotting processing accuracy on the roll ring.

[0017] Preferably, the limiting rod is provided with a convex portion protruding towards the slide table along its own length direction. The upper end of the slide table is provided with a concave portion that fits with the convex portion. The upper end surface of the slide table abuts against the convex portion of the limiting rod through the concave portion.

[0018] By making the limit rod and the slide counteract each other, the end surface required to cooperate between the slide and the limit rod is increased, and then the slide is limited from the upper end of the slide during the movement of the slide to prevent the slide from shaking during the movement and affecting the accuracy of the profiler in picking up the roller ring and the roller ring groove profile.

[0019] Preferably, a step portion is provided at one end of the slide away from the electric screw, a fixing frame is snapped into place at one end of the step portion away from the electric screw, the contour meter is fixed on the fixing frame, a sliding gap formed by the step portion is provided between the fixing frame and the slide, and a limit plate is provided in the sliding gap along the length direction of the shell.

[0020] By interlocking the fixed frame with the profile gauge with the slide and leaving a sliding gap between the fixed frame and the slide, the moving trajectory of the slide and the fixed frame is limited by a limit plate, further ensuring the accuracy of the profile gauge in picking up the roller ring and the roller ring groove profile.

[0021] Preferably, the limiting plate is provided with a plurality of limiting grooves along the width direction of the shell, and the end of the fixing frame close to the slide is provided with a convex strip that fits with the limiting grooves.

[0022] By adding a limit groove on the limit plate and a matching convex strip on the slide, the end surface required to match between the fixed frame and the limit plate is increased, further ensuring the accuracy of the profiler when picking up the roller ring and the roller ring groove profile.

[0023] The present invention can ensure the accuracy of the grooving position when the tool is controlled to process the grooving, and can ensure the accuracy of the roller ring grooving processing without utilizing manual experience and skills. It has the advantages of being able to accurately control the groove margin, improve the production quality of the roller ring, control the production time and production cost of the roller ring, and ensure the production efficiency of the roller ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0026] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the roller ring and mandrel in the state.

[0027] Figure 4 It is a structural schematic diagram of the first moving module and the second moving module of the present invention.

[0028] Figure 5 It is a schematic diagram of the explosion structure of the second mobile module of the present invention.

[0029] Figure 6 Schematic diagram of the groove edge distance in the present invention.

[0030] In the figure: 11, frame; 12, translation mechanism; 13, ejector pin; 14, mandrel; 141, large diameter section; 142, small diameter section; 15, roll ring; 16, copper-based grinding wheel; 17, first moving module; 18, second moving module; 181, housing; 182, power source; 183, electric screw rod; 184, limiting rod; 1841, convex part; 185, concave part; 186, step part; 187, fixing bracket; 188, limiting plate; 189, sliding gap; 19, slide table; 20, profilometer; 21, probe. Specific embodiments

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1: This embodiment discloses a high-precision grooving processing method for a roll ring, including the following steps: S1. The roll ring 15 is sleeved on the small diameter section 142 with a taper of the mandrel 14, and the inner circular surface of the roll ring 15 is abutted against the outer circular surface of the mandrel 14; S2. The probe 21 of the profilometer 20 is placed on the outer circular surface of the roll ring 15, which is the initial point of the probe 21; S3. The probe 21 of the profilometer 20 is driven by the first moving module 17 that can move in the direction perpendicular to the axis of the roll ring 15 to move along the horizontal direction closely against the outer circular surface of the roll ring 15, and the position of the highest point during the movement of the probe 21 is recorded, which is the highest point of the outer circular surface of the roll ring 15; S4. The copper-based grinding wheel 16 is fed and grooved for the first time, and then retracted after processing; S5. The probe 21 is driven by the second moving module 18 that can move in the direction parallel to the axis of the roll ring 15 to move along the axis to the other end face position of the roll ring 15, so that the probe 21 picks up the distance from the initial point to the groove on the roll ring 15, and the groove edge distance between the groove and the other end face of the roll ring 15 is recorded, as Figure 6 shown; S6. The axial position of the tool is adjusted according to the groove edge distance obtained in step S5, and the groove is grooved for the second time; S7. The processed roll ring 15 is removed, and the first grooving processing of the roll ring 15 is completed.

[0033] As Figure 1 shown, a processing device adopting the high-precision grooving processing method for a roll ring includes a frame 11, and two ejector pins 13 symmetrically arranged on the frame 11 in the axial direction of the roll ring 15. The ejector pins 13 can move through the translation mechanism 12 arranged on the frame 11, so as to approach or move away from each other between the two ejector pins 13. AsFigure 2 , Figure 3 As shown, a mandrel 14 for sleeving a roll ring 15 is clamped between two thimbles 13. The mandrel 14 includes a large-diameter section 141 and a small-diameter section 142. The outer cylindrical surface of the small-diameter section 142 has a taper. The roll ring 15 is sleeved on the outer cylindrical surface of the small-diameter section 142 of the mandrel 14. A copper-based grinding wheel 16 capable of feeding in a direction perpendicular to the axis of the thimble 13 is provided on the frame 11. A first moving module 17 is also provided on the frame 11. The first moving module 17 can drive the power output end to move in a direction perpendicular to the axis of the roll ring 15 through a lead screw and a slider used inside. A second moving module 18 is fixedly provided on the power output end of the first moving module 17. The second moving module 18 can drive the power output end to move in a direction parallel to the axis of the roll ring 15 through a lead screw and a slider used inside. A profiler 20 is fixedly provided on the power output end of the second moving module 18. The profiler 20 can move along the surface of the roll ring 15 and identify the profile and parameters of the roll ring 15.

[0034] As Figure 4 , Figure 5 shown, both the first moving module 17 and the second moving module 18 include a housing 181 and an electric lead screw 183 arranged along the length direction of the housing 181. A slide table 19 connected by threads is sleeved on the outer cylindrical surface of the electric lead screw 183. A power source 182 for rotating the electric lead screw 183 is provided on the housing 181. A limiting rod 184 is arranged along the length direction of the housing 181 on the housing 181, and the limiting rod 184 penetrates through the slide table 19.

[0035] The limiting rod 184 is provided with a convex portion 1841 protruding in a direction close to the slide table 19 along its own length direction. A concave portion 185 engaged with the convex portion 1841 is provided at the upper end of the slide table 19. The upper end surface of the slide table 19 abuts against the convex portion 1841 of the limiting rod 184 through the concave portion 185.

[0036] A stepped portion 186 is provided at one end of the slide table 19 away from the electric lead screw 183. A fixing frame 187 is buckled at one end of the stepped portion 186 away from the electric lead screw 183. The profiler 20 is fixedly arranged on the fixing frame 187. A sliding gap 189 formed by the stepped portion 186 is provided between the fixing frame 187 and the slide table 19. A limiting plate 188 arranged along the length direction of the housing 181 is provided in the sliding gap 189.

[0037] The limiting plate 188 is provided with a plurality of limiting grooves along the width direction of the housing 181. A convex strip engaged with the limiting grooves is provided at one end of the fixing frame 187 close to the slide table 19.

[0038] When grooving on the roll ring 15 is required, control the movement of the profiler 20 and position the probe 21 of the profiler 20 at the highest point of the roll ring 15, so that the profiler 20 performs profile pickup at the cross-sectional position corresponding to the diameter of the roll ring 15, thereby ensuring the accuracy of the profile of the roll ring 15 and the grooving profile picked up by the probe 21 of the profiler 20. Then, by controlling the probe 21 to move along the axial direction of the roll ring 15, position the groove edge distance at the required grooving position, and then ensure the grooving position accuracy when controlling the tool to groove.

[0039] Embodiment 2: This embodiment discloses a high-precision grooving processing method for a roll ring, including the following steps: S1. Fit the roll ring 15 onto the small-diameter section 142 with a taper of the mandrel 14, and make the inner circular surface of the roll ring 15 abut against the outer circular surface of the mandrel 14; S2. Place the probe 21 of the profiler 20 on the outer circular surface of the roll ring 15, which is the initial point of the probe 21; S3. Drive the probe 21 of the profiler 20 to move closely along the outer circular surface of the roll ring 15 in the horizontal direction through the first moving module 17 that can move in the direction perpendicular to the axis of the roll ring 15, and record the position of the highest point during the movement of the probe 21, which is the highest point of the outer circular surface of the roll ring 15; S4. Feed the copper-based grinding wheel 16 and groove for the first time, and retract the tool after the processing is completed; S5. Drive the probe 21 to move along the axial direction to the other end face position of the roll ring 15 through the second moving module 18 that can move in the direction parallel to the axis of the roll ring 15, so that the probe 21 picks up the distance from the initial point to the groove on the roll ring 15, and record the groove edge distance between the groove and the other end face of the roll ring 15, as Figure 6 shown; S6. Adjust the axial position of the tool along the roll ring 15 according to the groove edge distance obtained in step S5, and groove for the second time; S61. Feed once, and retract the tool after machining to a depth with at least 0.1 mm of allowance left; S62. Repeat step S5, and then use the profiler probe to obtain the profile of the roll ring after the machining in step S61, determine the groove edge distance and the groove profile; S63. Feed twice, and groove according to the data obtained in step S62; S7. Repeat step S5, and then use the probe 21 of the profiler 20 to obtain the profile of the roll ring 15 after the machining in step S6, determine the groove edge distance and the groove profile; S8. Groove for the third time according to the data obtained in step S7; S9. Remove the machined roll ring 15 to complete the first grooving processing on the roll ring 15.

Claims

1. A high-precision grooving method for roll rings, characterized in that, It includes the following steps: S1. Fit the roll ring onto the horizontally placed mandrel, and make the inner circular surface of the roll ring abut against the outer circular surface of the mandrel; S2. Place the probe of the profilometer on the outer circular surface of the roll ring, which is the initial point of the probe; S3. Drive the probe of the profilometer to move horizontally along the outer circular surface of the roll ring closely through the first moving module that can move along the direction perpendicular to the axis of the roll ring, and record the position of the highest point during the movement of the probe, which is the highest point of the outer circular surface of the roll ring; S4. Feed the tool and perform the first grooving operation, and then retract the tool after the processing is completed; S5. Drive the probe to move along the axis direction to the other end face position of the roll ring through the second moving module that can move along the direction parallel to the axis of the roll ring, so that the probe picks up the distance from the initial point to the groove on the roll ring, and record the groove edge distance between the groove and the other end face of the roll ring; S6. Adjust the axial position of the tool along the roll ring according to the groove edge distance obtained in step S5, and perform the second grooving operation until the tool is retracted after the groove depth reaches the preset value; S7. Remove the processed roll ring to complete the first grooving processing on the roll ring.

2. A high-precision grooving processing method for roll rings according to claim 1, characterized in that The second grooving operation in step S6 includes the following steps: S61. Feed the tool once, and retract the tool after processing until there is still a margin from the preset groove bottom; S62. Repeat step S5, and then use the profilometer probe to obtain the profile of the roll ring after the processing in step S61, and determine the groove edge distance and the groove profile; S63. Feed the tool twice, and process the groove according to the data obtained in step S62.

3. A high-precision grooving method for roll rings according to claim 2, characterized in that: In step S61, it also includes retracting the tool after processing until there is at least 0.1 mm of margin left in the groove depth.

4. A high-precision grooving processing method for roll rings according to claim 3, characterized in that: The mandrel in step S1 includes a large-diameter section and a small-diameter section. The outer circular surface of the small-diameter section has a taper, and the roll ring is sleeved on the outer circular surface of the small-diameter section of the mandrel.

5. A processing device for the high-precision grooving processing method of the roll ring described in any one of claims 1-4, comprising a frame, on which two center pins located in the axial direction of the roll ring are symmetrically arranged, a mandrel for the roll ring to be sleeved is clamped between the two center pins, and a grinding wheel capable of feeding in a direction perpendicular to the axis of the center pin is arranged on the frame, characterized in that: The first moving module is also provided on the frame. The power output end of the first moving module is fixedly provided with the second moving module. The power output end of the second moving module is fixedly provided with the profilometer. The first moving module can drive the second moving module to move along the direction perpendicular to the axis of the roll ring through the internally used lead screw and slider. The second moving module can drive the profilometer to move along the direction parallel to the axis of the roll ring through the internally used lead screw and slider. The profilometer can move along the surface of the roll ring and identify the profile and parameters of the roll ring.

6. The processing equipment for a high-precision grooving processing method of a roll ring according to claim 5, characterized in that: Both the first moving module and the second moving module include a housing and an electric lead screw arranged along the length direction of the housing. A slide table connected by threads is sleeved on the outer circular surface of the electric lead screw. A power source for rotating the electric lead screw is provided on the housing. A limiting rod is arranged along the length direction of the housing on the housing, and the limiting rod penetrates through the slide table.

7. The processing equipment for a high-precision grooving processing method of roll rings according to claim 6, characterized in that: The limiting rod is provided with a convex portion protruding towards the slide table along its own length direction. A concave portion engaged with the convex portion is provided at the upper end of the slide table, and the upper end surface of the slide table abuts against the convex portion of the limiting rod through the concave portion.

8. The processing equipment for a high-precision grooving processing method of a roll ring according to claim 7, characterized in that: One end of the sliding table away from the electric lead screw is provided with a stepped portion, and a fixing frame is buckled at one end of the stepped portion away from the electric lead screw. The profiler is fixedly arranged on the fixing frame. A sliding gap formed by the stepped portion is arranged between the fixing frame and the sliding table, and a limiting plate arranged along the length direction of the shell is arranged in the sliding gap.

9. The processing equipment for a high-precision grooving processing method of a roll ring according to claim 8, characterized in that: A plurality of limiting grooves are arranged on the limiting plate along the width direction of the shell, and a convex strip matched with the limiting grooves is arranged at one end of the fixing frame close to the sliding table.

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