CN110181347B - Remanufacturing automatic numerical control crankshaft grinding machine - Google Patents
Remanufacturing automatic numerical control crankshaft grinding machine Download PDFInfo
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- CN110181347B CN110181347B CN201910478288.6A CN201910478288A CN110181347B CN 110181347 B CN110181347 B CN 110181347B CN 201910478288 A CN201910478288 A CN 201910478288A CN 110181347 B CN110181347 B CN 110181347B
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- grinding wheel
- linear guide
- fixed
- roller
- crankshaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
- B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention provides a remanufactured numerical control crankshaft grinding machine which comprises a machine body; a clamp assembly; a center support assembly; a grinding wheel assembly; and (4) trimming the assembly. The remanufactured numerical control crankshaft grinding machine provided by the invention can ensure stability under the condition of high-speed grinding through improving the traditional grinding machine, so that the machining efficiency is improved, and meanwhile, the machining precision is ensured.
Description
Technical Field
The invention relates to the field of crankshaft machining devices, in particular to a remanufactured numerical control crankshaft grinding machine.
Background
The crankshaft grinding machine is used for grinding the main journal and the connecting rod journal of the crankshaft, and the CBN grinding wheel is used for grinding the main journal and the connecting rod journal of the crankshaft, so that large-cutting-depth high-efficiency high-speed grinding can be realized. However, the conventional grinding machine is low in grinding wheel rotating speed due to the fact that the conventional grinding machine is matched with a common grinding wheel, the stability requirement on the grinding machine is low, even if the CBN grinding wheel capable of grinding at a high speed is replaced, the stability of the whole grinding machine cannot meet the production requirement of high speed and high efficiency, the conventional grinding machine needs to be correspondingly transformed, the conventional grinding machine can be suitable for the CBN grinding wheel at a high speed, and therefore the machining efficiency and the machining precision of a crankshaft can be greatly improved after the conventional grinding machine is transformed.
In addition, the CBN grinding wheel grinds the excircle and thrust surface of the main journal and the connecting rod journal of the crankshaft, this requires that both the R-face (i.e. the fillet) and the outer cylindrical face of the CBN grinding wheel participate in grinding, the CBN grinding wheel will wear out as grinding proceeds after a period of use, so that the grinding wheel becomes dull and loses the original shape, the processing precision of the connecting rod neck and the main journal is influenced, the R surface and the outer circular surface of the grinding wheel need to be dressed, so that the grinding wheel can recover a good working state, while the conventional CBN grinding wheel dressing device adopts a diamond roller wheel to dress the grinding wheel, in the dressing process, the front dressing blade of the end face of one end, far away from the electric spindle, of the diamond roller dresses the outer circular face of the grinding wheel, the side dressing blade of the circumferential face of the diamond roller dresses the R face of the grinding wheel, the diamond roller is arranged on one side, far away from the grinding wheel, of the grinding machine, and the axis of the diamond roller is parallel to the plane of the working table of the grinding machine. The problems with this approach to trimming include the following two points: (1) a driving device of the diamond roller needs to be arranged independently to drive the diamond roller from one side of the grinding machine far away from the grinding wheel to a position close to the grinding wheel to finish the grinding wheel, and the structural design is complex; (2) the front trimming edge of the diamond roller is a trimming surface which is in contact with the outer circular surface to trim the outer circular surface, so that the trimming efficiency is low, and the trimming effect is poor.
Disclosure of Invention
The invention aims to provide a remanufactured numerical control crankshaft grinding machine, which can ensure stability under the condition of high-speed grinding through the improvement of a traditional grinding machine, thereby improving the processing efficiency and simultaneously ensuring the processing precision.
The embodiment of the invention is realized by the following steps: a remanufactured numerically controlled crankshaft grinder comprising: the lathe bed is provided with a working table surface and a Z-axis driving device for driving the working table surface to move along the Z-axis direction, and the Z-axis direction is parallel to the length direction of the working table surface; the workbench surface is provided with a headstock box body and a tailstock box body, the headstock box body is rotatably connected with a first spindle, and the tailstock box body is rotatably connected with a second spindle; the clamp assemblies are provided with a pair, one clamp assembly is used for clamping and positioning one end part of the crankshaft, and the other clamp assembly is used for clamping and positioning the other end part of the crankshaft; the clamp assembly comprises a clamp body, a positioning device and a clamping device; the positioning device comprises a positioning seat, the positioning seat is provided with an arc-shaped positioning groove, the positioning seat is fixed at one end of the fixture body, the other end of the fixture body is provided with a disc seat, the disc seat of one fixture assembly is fixed on the first main shaft, and the disc seat of the other fixture assembly is fixed on the second main shaft; the clamping device comprises a clamping jaw and a clamping jaw driving device for driving the clamping jaw to clamp the end part of the crankshaft on the arc-shaped positioning groove; the central support assembly is fixedly arranged on one side of the lathe bed and is used for supporting a connecting rod neck or a main journal of a crankshaft subjected to grinding; the grinding wheel assembly comprises a base, a grinding wheel arranged on the base, a grinding wheel driving device used for driving the grinding wheel to rotate and an X-axis driving device used for driving the grinding wheel to move along the X-axis direction, and the base is fixedly arranged on one side of the machine body far away from the central support assembly; the X-axis direction is vertical to the length direction of the lathe bed, and the axial direction of the grinding wheel is parallel to the axial direction of the crankshaft; the trimming assembly comprises a diamond roller, a roller driving device for driving the diamond roller to rotate and a fixing device for fixing the diamond roller on the headstock box body; the diamond roller is fixed on one side of the grinding machine close to the grinding wheel, the axis of the diamond roller is vertically distributed with the axis of the grinding wheel, and the axis of the diamond roller is vertical to the plane of the working platform; the diamond roller comprises a connecting disc and a trimming blade fixed on the outer circumferential surface of the connecting disc, and the trimming blade is arranged at the end part of one end, far away from the roller driving device, of the connecting disc.
Furthermore, a first linear guide rail is fixedly arranged on the upper surface of the lathe bed and is distributed along the length direction of the lathe bed; the first linear guide rail is connected with a first sliding block in a sliding manner, and the working table top is fixed on one side of the first sliding block, which is far away from the first linear guide rail; the Z-axis driving device comprises a first motor, a first screw rod fixedly connected with a rotating shaft of the first motor and a first nut block in threaded connection with the first screw rod; the first motor is fixed on the lathe bed, the first screw rod is rotatably connected with the lathe bed, the first screw rod is distributed in parallel with the first linear guide rail, and the working table surface is fixed on one side, away from the lathe bed, of the first nut block.
Furthermore, 2 first linear guide rails are arranged, the first screw rod is arranged between the 2 first linear guide rails, and the 2 first linear guide rails are symmetrically distributed along the first screw rod; a plurality of first sliding blocks are connected to the first linear guide rail in a sliding mode and are fixedly connected with the working table top.
Further, jack catch drive arrangement includes actuating arm and cylinder, and the actuating arm middle part is articulated with the anchor clamps body, actuating arm one end and jack catch fixed connection, and the actuating arm other end is articulated with the telescopic link of cylinder, cylinder and anchor clamps body fixed connection.
Furthermore, a second linear guide rail is arranged on the base, the length direction of the second linear guide rail is distributed along the X-axis direction, the second linear guide rail is connected with a second sliding block in a sliding manner, a bottom plate is fixedly arranged on one side, away from the second linear guide rail, of the second sliding block, and the grinding wheel is fixed above the bottom plate; the X-axis driving device comprises a second motor, a second screw rod fixedly connected with a rotating shaft of the second motor, and a second nut block in threaded connection with the second screw rod, the second motor is fixed on the base, the second screw rod is rotatably connected with the base, the second screw rod is distributed in parallel with the second linear guide rail, and one side, far away from the base, of the second nut block is fixed on the bottom plate.
Furthermore, two sides of the second screw rod are respectively provided with 2 second linear guide rails, and the second linear guide rails positioned on the two sides of the second screw rod are symmetrically distributed along the second screw rod; a plurality of second sliding blocks are connected to the second linear guide rail in a sliding mode and are fixedly connected with the bottom plate.
Furthermore, a grinding wheel axle box is arranged on the bottom plate, the grinding wheel driving device comprises a grinding wheel motor and a transmission shaft fixedly connected with a rotating shaft of the grinding wheel motor, the grinding wheel motor is fixed on one side of the grinding wheel axle box, the transmission shaft penetrates through the grinding wheel axle box and then is arranged on the other side of the grinding wheel axle box, and the grinding wheel is fixed on the end part of one end of the transmission shaft, which is far away from the grinding.
Furthermore, the roller driving device comprises an electric spindle, the fixing device comprises a fixing seat and a clamping cylinder fixedly connected with the fixing seat, the fixing seat is fixed on one side, close to the grinding wheel, of the headstock body, and the electric spindle extends into the clamping cylinder and is fixedly connected with the clamping cylinder.
Furthermore, a connecting device for connecting the electric spindle and the diamond roller is also arranged between the electric spindle and the diamond roller; the connecting device comprises a connecting sleeve cone and a pressing screw; the connecting sleeve cone comprises a sleeve cone part, a roller connecting part which is integrally formed with the sleeve cone part and is communicated with the sleeve cone part, and a connecting ring which is formed by outwards protruding one end of the sleeve cone part close to the roller connecting part; the inner diameter of the roller connecting part is larger than that of the sleeve cone part, so that a step surface is formed between the roller connecting part and the sleeve cone part; one end of the electric main shaft, which is close to the diamond roller, is provided with a conical connecting shaft, and the sleeve conical part is sleeved outside the conical connecting shaft; a central hole is formed in the center of the connecting disc, and the roller connecting part extends into the central hole; the connecting ring is fixedly connected with the connecting disc through a plurality of connecting screws; the center of the conical connecting shaft is provided with a connecting screw hole, the pressing screw extends into the connecting screw hole, and the head of the pressing screw abuts against the step surface to fixedly connect the connecting sleeve cone and the conical connecting shaft.
Furthermore, the fixing seat comprises a fixing plate and a fixing block fixedly connected with the fixing plate, the fixing plate is fixed on the headstock body, the fixing block is fixed at one end of the clamping cylinder close to the diamond roller, and the fixing block is fixed on the outer circumferential surface of the clamping cylinder; a first reinforcing rib plate is fixedly arranged between the end face of the fixing block, which is far away from one end of the diamond roller, and the outer circumferential face of the holding and clamping barrel, which is far away from one end of the diamond roller.
The invention has the beneficial effects that:
(1) according to the remanufactured numerical control crankshaft grinding machine, the crankshaft can be stably clamped under the high-speed rotation condition through the transformation of the clamp assembly, and the main journal and the connecting rod journal of the crankshaft can be ensured to stably rotate when the grinding wheel grinds the main journal or the connecting rod journal of the crankshaft at a high speed through the transformation of the grinding wheel assembly and the arrangement of the central support assembly opposite to the grinding wheel;
(2) according to the dressing assembly, the diamond roller is fixed on the headstock body of the grinding machine, the diamond roller is directly driven to be close to or far away from the grinding wheel through the movement of the headstock body along the Z axis, a driving device does not need to be reconfigured, and the dressing assembly is simple in structure and convenient to control; the axis of the diamond roller is vertical to the axis of the grinding wheel and is vertical to the worktable surface, so that the trimming blade of the circumferential surface of the diamond roller is in contact with the outer circular surface and the R surface of the grinding wheel to trim the outer circular surface and the R surface of the grinding wheel;
(3) the remanufactured numerical control crankshaft grinding machine has low production cost, can achieve the function of a new numerical control grinding machine only by simple modification cost, and has good economic benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the structure of a crankshaft grinding machine of the present invention;
FIG. 2 is a schematic view of the Z-axis drive of the present invention;
FIG. 3 is a structural schematic view from one perspective of the clamp assembly of the present invention;
FIG. 4 is a structural schematic view from another perspective of the clamp assembly of the present invention;
FIG. 5 is a schematic view of the grinding wheel assembly of the present invention;
FIG. 6 is a schematic view of the structure of the X-axis driving device of the present invention;
FIG. 7 is a schematic structural view of a conditioning assembly of the present invention;
FIG. 8 is a schematic structural view of the connection cone of the present invention;
FIG. 9 is a schematic view of the construction of the fastening device of the present invention;
FIG. 10 is a schematic view of the construction of a diamond roller according to the present invention;
FIG. 11 is a schematic view of a diamond roller of the present invention in contact with the outer circumferential surface of a grinding wheel;
figure 12 is a schematic view of the diamond roller of the present invention in contact with the R-face of the grinding wheel.
Icon:
100-bed, 110-table, 120-headstock, 130-tailstock, 141-first linear guide, 142-first slide, 143-first motor, 144-first screw, 145-first nut block, 200-clamp assembly, 210-clamp body, 211-disk seat, 220-positioning seat, 221-arc positioning groove, 231-driving arm, 232-clamping jaw, 233-cylinder, 240-indexing device, 300-center support assembly, 400-grinding wheel assembly, 410-base, 420-base plate, 431-second linear guide, 432-second slide, 433-second motor, 434-second screw, 435-second nut block, 440-grinding wheel, 441-outer circular surface, 442-R surface, 451-a grinding wheel axle box, 452-a transmission shaft, 453-a grinding wheel motor, 500-a dressing component, 510-a diamond roller, 511-a connecting disc, 512-a dressing blade, 513-a central hole, 520-an electric spindle, 521-a conical connecting shaft, 531-a clamping cylinder, 533-a fixing plate, 534-a fixing block, 535-a first reinforcing rib plate, 536-a second reinforcing rib plate, 540-a connecting sleeve cone, 541-a sleeve cone part, 542-a connecting ring, 543-a roller connecting part, 544-a step surface and 550-a pressing screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The invention is further described with reference to the accompanying drawings, as shown in figures 1-12:
this embodiment provides a refabrication numerically controlled crankshaft grinder, includes: the lathe bed 100 is provided with a working table surface 110 and a Z-axis driving device for driving the working table surface 110 to move along the Z-axis direction, and the Z-axis direction is parallel to the length direction of the working table surface 110; the worktable 110 is provided with a headstock 120 and a tailstock 130, the headstock 120 is rotatably connected with a first spindle, and the tailstock 130 is rotatably connected with a second spindle; the clamp assemblies 200 are provided in a pair, one clamp assembly 200 is used for clamping and positioning one end part of the crankshaft, and the other clamp assembly 200 is used for clamping and positioning the other end part of the crankshaft; the clamp assembly 200 comprises a clamp body 210, a positioning device and a clamping device; the positioning device comprises a positioning seat 220, the positioning seat 220 is provided with an arc-shaped positioning groove 221, the positioning seat 220 is fixed at one end of the fixture body 210, the other end of the fixture body 210 is provided with a disc seat 211, the disc seat 211 of one fixture assembly 200 is fixed on the first main shaft, and the disc seat 211 of the other fixture assembly 200 is fixed on the second main shaft; the clamping device comprises a clamping jaw 232 and a clamping jaw driving device for driving the clamping jaw 232 to clamp the end part of the crankshaft on the arc-shaped positioning groove 221; the center support assembly 300 is fixedly arranged on one side of the lathe bed 100, and the center support assembly 300 is used for supporting a connecting rod neck or a main journal of a grinding crankshaft; the grinding wheel assembly 400, the grinding wheel assembly 400 includes a base 410, a grinding wheel 440 disposed on the base 410, a grinding wheel driving device for driving the grinding wheel 440 to rotate, and an X-axis driving device for driving the grinding wheel 440 to move along the X-axis direction, the base 410 is fixedly disposed on a side of the bed 100 away from the central support assembly 300; the X-axis direction is perpendicular to the length direction of the lathe bed 100, and the axial direction of the grinding wheel 440 is parallel to the axial direction of the crankshaft; the dressing assembly 500, the dressing assembly 500 includes a diamond roller 510, a roller driving device for driving the diamond roller 510 to rotate, and a fixing device for fixing the diamond roller 510 to the headstock 120; the diamond roller 510 is fixed on one side of the grinding machine close to the grinding wheel 440, the axis of the diamond roller 510 is vertically distributed with the axis of the grinding wheel 440, and the axis of the diamond roller 510 is vertical to the plane of the working table; the diamond roller 510 includes a connection disc 511 and a dressing blade 512 fixed to an outer circumferential surface of the connection disc 511, the dressing blade 512 being provided at an end of the connection disc 511 remote from an end of the roller driving device.
According to the remanufactured numerical control crankshaft grinding machine, the end part of the crankshaft is clamped in the arc-shaped positioning groove 221 by the clamp assembly 200 through the clamping jaws 232, so that the crankshaft can be stably clamped under the condition of high-speed rotation, the grinding wheel assembly 400 is reformed, the central support assembly 300 is arranged opposite to the grinding wheel 440, when the grinding wheel 400 grinds the main journal or the connecting rod journal of the crankshaft, the central support assembly 300 supports the ground journal opposite to the grinding wheel 440 so as to counteract the larger thrust of the grinding wheel 440 rotating at high speed on the journal, so that when the grinding wheel 440 grinds the main journal or the connecting rod journal of the crankshaft at high speed, the main journal and the connecting rod journal of the crankshaft can be ensured to stably rotate; in addition, according to the dressing assembly 500 of the present invention, the diamond roller 510 is fixed on the headstock box 120, and the diamond roller 510 is directly driven to approach or leave the grinding wheel 440 along the Z-axis direction by the movement of the headstock box 120 along the Z-axis, without reconfiguring a driving device, which is simple in structure and convenient to control; the axis of the diamond roller 510 is perpendicular to the axis of the grinding wheel 440 and perpendicular to the worktable 110, so that the trimming edge 512 of the circumferential surface of the diamond roller 510 is in contact with the outer circumferential surface 441 and the R surface 442 of the grinding wheel 440, and the outer circumferential surface 441 and the R surface 442 of the grinding wheel 440 are trimmed.
The dressing process of the grinding wheel in the embodiment is as follows: when the outer circular surface 441 of the grinding wheel 440 is trimmed, the Z-axis driving device and the X-axis driving device are started, so that the trimming blade 512 of the diamond roller 510 is in contact with the outer circular surface 441 of the grinding wheel 440 (as shown in fig. 11), and then the Z-axis driving device, the roller driving device and the grinding wheel driving device are started, so that the grinding wheel 440 rotates, the diamond roller 510 moves along the Z-axis direction, and the motions in the three directions are linked to realize trimming of the outer circular surface 441 of the grinding wheel 440; when the R surface 442 of the grinding wheel 440 is dressed, the Z-axis driving device and the X-axis driving device are activated to bring the dressing edge 512 of the diamond roller 510 into contact with the R surface 442 of the grinding wheel 440 (as shown in fig. 12), and then the Z-axis driving device, the X-axis driving device, the roller driving device, and the grinding wheel driving device are activated to rotate the grinding wheel 440 and the diamond roller 510, and the diamond roller 510 moves in the Z-axis direction, and the grinding wheel 440 moves in the X-axis direction, and the motions in the four directions are linked to each other to dress the R surface 442 of the grinding wheel 440.
In this embodiment, the upper surface of the bed 100 is fixedly provided with a first linear guide rail 141, and the first linear guide rail 141 is distributed along the length direction of the bed 100; the first linear guide rail 141 is connected with a first sliding block 142 in a sliding manner, and the working table 110 is fixed on one side of the first sliding block 142, which is far away from the first linear guide rail 141; the Z-axis driving device comprises a first motor 143, a first screw rod 144 fixedly connected with a rotating shaft of the first motor 143 and a first nut block 145 in threaded connection with the first screw rod 144; the first motor 143 is fixed to the bed 100, the first lead screw 144 is rotatably connected to the bed 100, the first lead screw 144 is parallel to the first linear guide 141, and the working table 110 is fixed to a side of the first nut block 145 away from the bed 100. Further, 2 first linear guide rails 141 are provided, the first screw rod 144 is provided between the 2 first linear guide rails 141, and the 2 first linear guide rails 141 are symmetrically distributed along the first screw rod 144; a first linear guide 141 is slidably connected to a plurality of first sliding blocks 142, and the plurality of first sliding blocks 142 are all parallel to the work table 110. The stability of the table top 110 during movement is further improved by the arrangement of the lead screw nuts and the arrangement of the plurality of groups of first linear guide rails 141.
In this embodiment, the jaw driving device includes a driving arm 231 and an air cylinder 233, the middle of the driving arm 231 is hinged to the clamp body 210, one end of the driving arm 231 is fixedly connected to the jaw 232, the other end of the driving arm 231 is hinged to the telescopic rod of the air cylinder 233, and the air cylinder 233 is fixedly connected to the clamp body 210. The clamping of the clamping jaw 232 is realized by driving the driving arm 231 through the air cylinder 233, the clamping is stable and accurate, and the clamping effect is good.
In this embodiment, a second linear guide 431 is disposed on the base 410, the length direction of the second linear guide 431 is distributed along the X-axis direction, the second linear guide 431 is slidably connected with a second slider 432, a bottom plate 420 is fixedly disposed on one side of the second slider 432 away from the second linear guide 431, and a grinding wheel 440 is fixed above the bottom plate 420; the X-axis driving device includes a second motor 433, a second lead screw 434 fixedly connected to a rotation shaft of the second motor 433, and a second nut block 435 threadedly connected to the second lead screw 434, the second motor 433 is fixed to the base 410, the second lead screw 434 is rotatably connected to the base 410, the second lead screw 434 is parallel to the second linear guide 431, and one side of the second nut block 435 away from the base 410 is fixed to the bottom plate 420. Further, 4 second linear guides 431 are provided, 2 second linear guides 432 are provided on one side of the second lead screw 434, 2 second linear guides 432 are provided on the other side of the second lead screw 434, and the second linear guides 432 on both sides of the second lead screw 434 are symmetrically distributed along the second lead screw 434; a plurality of second sliding blocks 432 are slidably connected to a second linear guide 431, and the plurality of second sliding blocks 432 are fixedly connected to the bottom plate 420. Through the arrangement of the screw rod nut and the arrangement of the plurality of groups of the second linear guide rails 431 and the second sliding blocks 432, the feeding process of the grinding wheel 440 is more stable.
In this embodiment, a grinding wheel axle box 451 is disposed on the bottom plate 420, the grinding wheel driving device includes a grinding wheel motor 453 and a transmission shaft 452 fixedly connected to a rotation shaft of the grinding wheel motor 453, the grinding wheel motor 453 is fixed to one side of the grinding wheel axle box 451, the transmission shaft 452 passes through the grinding wheel axle box 451 and is disposed on the other side of the grinding wheel axle box 451, and the grinding wheel 440 is fixed to an end portion of the transmission shaft 452 far from one end of the grinding wheel motor 453. The grinding wheel 440 is connected with the grinding wheel motor 453 through the transmission shaft 452, and the stability is higher.
In this embodiment, the roller driving device includes an electric spindle 520, the fixing device includes a fixing seat and a clamping cylinder 531 fixedly connected to the fixing seat, the fixing seat is fixed to one side of the headstock 120 close to the grinding wheel 440, and the electric spindle 520 extends into the clamping cylinder 531 and is fixedly connected to the clamping cylinder 531. The electric spindle 520 is fixedly connected with the headstock 120 by a fixing device.
Further, a connecting device for connecting the electric spindle 520 and the diamond roller 510 is further arranged between the electric spindle 520 and the diamond roller 510; the connecting device comprises a connecting sleeve cone 540 and a pressing screw 550; the connecting cone 540 includes a cone 541, a roller connecting portion 543 integrally formed with the cone 541 and connected therewith, and a connecting ring 542 formed by one end of the cone 541 adjacent to the roller connecting portion 543 protruding outward; the inner diameter of the roller connecting portion 543 is larger than the inner diameter of the sleeve cone portion 541, so that a step surface 544 is formed between the roller connecting portion 543 and the sleeve cone portion 541; one end of the electric spindle 520 close to the diamond roller 510 is provided with a conical connecting shaft 521, and a sleeve conical part 541 is sleeved outside the conical connecting shaft 521; a center hole 513 is formed in the center of the connecting disc 511, and the roller connecting part 543 extends into the center hole 513; the connecting ring 542 is fixedly connected with the connecting disc 511 through a plurality of connecting screws; the center of the tapered connecting shaft 521 is provided with a connecting screw hole, the pressing screw 550 extends into the connecting screw hole, and the head of the pressing screw 550 abuts against the step surface 544 to fixedly connect the connecting sleeve taper 540 with the tapered connecting shaft 521. The electric spindle 520 is fixedly connected with the diamond roller 510 through the connecting sleeve cone 540, the structure is stable, the connecting effect is good, and the connection stability can be guaranteed under the high-speed rotating condition.
In this embodiment, the fixing seat includes a fixing plate 533 and a fixing block 534 fixedly connected to the fixing plate 533, the fixing plate 533 is fixed to the headstock box 120, the fixing block 534 is fixed to one end of the pinching cylinder 531 close to the diamond roller 510, and the fixing block 534 is fixed to the outer circumferential surface of the pinching cylinder 531; a first reinforcing rib plate 535 is fixedly arranged between the end surface of the fixing block 534 far away from one end of the diamond roller 510 and the outer circumferential surface of the clamping cylinder 531 far away from one end of the diamond roller 510. The second reinforcing rib plate 536 is further arranged between the fixing plate 533 and the fixing block 534, and through the structural arrangement of the fixing plate 533 and the fixing block 534, the connection of the fixing seat with the headstock box 120 and the clamping cylinder 531 in a mean square manner is realized, and through the arrangement of the first reinforcing rib plate 535 and the second reinforcing rib plate 536, the connection structure of the whole fixing seat is more stable.
In conclusion, the remanufactured numerically controlled crankshaft grinding machine of the embodiment is correspondingly adaptively modified on a common grinding machine, so that the stability of the remanufactured numerically controlled crankshaft grinding machine can be guaranteed under the condition of high-speed grinding, the machining efficiency is improved, the machining precision is guaranteed, meanwhile, the crankshaft grinding machine can conveniently and rapidly automatically trim sand, the time consumed by trimming is reduced, and the trimming precision is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A remanufactured numerically controlled crankshaft grinder, comprising:
the lathe bed is provided with a working table surface and a Z-axis driving device for driving the working table surface to move along the Z-axis direction, and the Z-axis direction is parallel to the length direction of the working table surface; the workbench surface is provided with a headstock box body and a tailstock box body, the headstock box body is rotatably connected with a first spindle, and the tailstock box body is rotatably connected with a second spindle;
the pair of clamp assemblies is arranged, one clamp assembly is used for clamping and positioning one end part of the crankshaft, and the other clamp assembly is used for clamping and positioning the other end part of the crankshaft; the clamp assembly comprises a clamp body, a positioning device and a clamping device; the positioning device comprises a positioning seat, the positioning seat is provided with an arc-shaped positioning groove, the positioning seat is fixed at one end of the fixture body, the other end of the fixture body is provided with a disc seat, the disc seat of one fixture assembly is fixed on the first main shaft, and the disc seat of the other fixture assembly is fixed on the second main shaft; the clamping device comprises a clamping jaw and a clamping jaw driving device used for driving the clamping jaw to clamp the end part of the crankshaft on the arc-shaped positioning groove;
the central support assembly is fixedly arranged on one side of the lathe bed and is used for supporting a connecting rod neck or a main journal of the crankshaft subjected to grinding;
the grinding wheel assembly comprises a base, a grinding wheel arranged on the base, a grinding wheel driving device used for driving the grinding wheel to rotate and an X-axis driving device used for driving the grinding wheel to move along the X-axis direction, and the base is fixedly arranged on one side of the lathe bed far away from the central support assembly; the X-axis direction is perpendicular to the length direction of the lathe bed, and the axial direction of the grinding wheel is parallel to the axial direction of the crankshaft;
the trimming assembly comprises a diamond roller, a roller driving device for driving the diamond roller to rotate and a fixing device for fixing the diamond roller to the headstock box; the diamond roller is fixed on one side of the grinding machine close to the grinding wheel, the axis of the diamond roller is vertically distributed with the axis of the grinding wheel, and the axis of the diamond roller is vertical to the plane of the working table; the diamond roller comprises a connecting disc and a trimming blade fixed on the outer circumferential surface of the connecting disc, and the trimming blade is arranged at the end part, far away from one end of the roller driving device, of the connecting disc.
2. The remanufactured numerically controlled crankshaft grinder of claim 1, wherein a first linear guide rail is fixedly disposed on an upper surface of the bed, the first linear guide rail being distributed along a length of the bed; the first linear guide rail is connected with a first sliding block in a sliding mode, and the working table top is fixed on one side, far away from the first linear guide rail, of the first sliding block;
the Z-axis driving device comprises a first motor, a first screw rod fixedly connected with a rotating shaft of the first motor and a first nut block in threaded connection with the first screw rod; the first motor is fixed on the lathe bed, the first screw rod is rotatably connected with the lathe bed, the first screw rod is distributed in parallel with the first linear guide rail, and the working table is fixed on one side, away from the lathe bed, of the first nut block.
3. The remanufactured numerically controlled crankshaft grinder of claim 2, wherein the first linear guide is provided with 2 pieces, the first lead screw is provided between the 2 pieces of the first linear guide, and the 2 pieces of the first linear guide are symmetrically distributed along the first lead screw;
and a plurality of first sliding blocks are connected with the first linear guide rail in a sliding way, and are fixedly connected with the working table top.
4. The remanufactured numerically controlled crankshaft grinding machine of claim 1, wherein the jaw driving device comprises a driving arm and a cylinder, the middle of the driving arm is hinged to the clamp body, one end of the driving arm is fixedly connected to the jaw, the other end of the driving arm is hinged to a telescopic rod of the cylinder, and the cylinder is fixedly connected to the clamp body.
5. The remanufactured numerically controlled crankshaft grinding machine according to claim 1, wherein a second linear guide rail is arranged on the base, the length direction of the second linear guide rail is distributed along the X-axis direction, a second slider is connected to the second linear guide rail in a sliding manner, a bottom plate is fixedly arranged on one side, away from the second linear guide rail, of the second slider, and the grinding wheel is fixed above the bottom plate;
the X-axis driving device comprises a second motor, a second lead screw fixedly connected with a rotating shaft of the second motor, and a second nut block in threaded connection with the second lead screw, the second motor is fixed on the base, the second lead screw is rotatably connected with the base, the second lead screw is parallel to the second linear guide rail, and one side of the base is fixed on the bottom plate.
6. The remanufactured numerically controlled crankshaft grinder of claim 5, wherein 2 pieces of second linear guide rails are disposed on each side of the second lead screw, and the second linear guide rails on each side of the second lead screw are symmetrically distributed along the second lead screw;
and a plurality of second sliding blocks are connected to the second linear guide rail in a sliding manner, and are fixedly connected with the bottom plate.
7. The remanufactured numerically controlled crankshaft grinding machine according to claim 5, wherein a grinding wheel axle box is disposed on the base plate, the grinding wheel driving device includes a grinding wheel motor and a transmission shaft fixedly connected to a rotating shaft of the grinding wheel motor, the grinding wheel motor is fixed to one side of the grinding wheel axle box, the transmission shaft passes through the grinding wheel axle box and is disposed on the other side of the grinding wheel axle box, and the grinding wheel is fixed to an end portion of the transmission shaft, which is far away from the grinding wheel motor.
8. The remanufactured numerically controlled crankshaft grinding machine of claim 1, wherein the roller driving device comprises an electric spindle, the fixing device comprises a fixing seat and a clamping cylinder fixedly connected with the fixing seat, the fixing seat is fixed to one side of the headstock body close to the grinding wheel, and the electric spindle extends into the clamping cylinder and is fixedly connected with the clamping cylinder.
9. The remanufactured numerically controlled crankshaft grinder of claim 8, further comprising a connecting device for connecting the electric spindle and the diamond roller; the connecting device comprises a connecting sleeve cone and a pressing screw;
the connecting sleeve cone comprises a sleeve cone part, a roller connecting part which is integrally formed with the sleeve cone part and is communicated with the sleeve cone part, and a connecting ring which is formed by outwards protruding one end of the sleeve cone part close to the roller connecting part; the inner diameter of the roller connecting part is larger than that of the sleeve conical part, so that a step surface is formed between the roller connecting part and the sleeve conical part;
one end of the electric spindle, which is close to the diamond roller, is provided with a conical connecting shaft, and the sleeve conical part is sleeved outside the conical connecting shaft; a central hole is formed in the center of the connecting disc, and the roller connecting part extends into the central hole;
the connecting ring is fixedly connected with the connecting disc through a plurality of connecting screws; the center of the conical connecting shaft is provided with a connecting screw hole, the pressing screw extends into the connecting screw hole, and the head of the pressing screw abuts against the step surface to fixedly connect the connecting sleeve cone with the conical connecting shaft.
10. The remanufactured numerically controlled crankshaft grinder of claim 8, wherein the fixing seat comprises a fixing plate and a fixing block fixedly connected with the fixing plate, the fixing plate is fixed to the headstock body, the fixing block is fixed to one end, close to the diamond roller, of the clamping cylinder, and the fixing block is fixed to the outer circumferential surface of the clamping cylinder; a first reinforcing rib plate is fixedly arranged between the end face, away from one end of the diamond roller, of the fixing block and the outer circumferential face, away from one end of the diamond roller, of the holding and clamping cylinder.
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| CN201910478288.6A CN110181347B (en) | 2019-06-03 | 2019-06-03 | Remanufacturing automatic numerical control crankshaft grinding machine |
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| CN201910478288.6A CN110181347B (en) | 2019-06-03 | 2019-06-03 | Remanufacturing automatic numerical control crankshaft grinding machine |
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| CN110181347B true CN110181347B (en) | 2021-04-09 |
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| CN201910478288.6A Active CN110181347B (en) | 2019-06-03 | 2019-06-03 | Remanufacturing automatic numerical control crankshaft grinding machine |
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| CN111168492B (en) * | 2020-01-15 | 2021-07-30 | 浙江中在医疗科技有限公司 | Orthopedics coaptation board processing apparatus that becomes more meticulous |
| CN113649871A (en) * | 2021-08-30 | 2021-11-16 | 罡阳轴研科技(灌云)有限公司 | Grinding clamp for motorcycle engine crankshaft |
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| CN110181347A (en) | 2019-08-30 |
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Inventor after: Liu Jianhua Inventor after: Wen Jianjun Inventor after: Xiao Xiangyu Inventor after: Xia Guanghui Inventor after: Wang Yaping Inventor before: Wen Jianjun Inventor before: Xiao Xiangyu Inventor before: Xia Guanghui Inventor before: Wang Yaping |
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Effective date of registration: 20200415 Address after: 629300, Sichuan, Suining Province, Britain County Industrial Development Zone, Ma Xiangjiaba, Binjiang North Road East Applicant after: SICHUAN PAN ASIA POWER TECHNOLOGY Co.,Ltd. Address before: 610056 Blue Harbour A-10-5, 59 Tianxiang Street, Chengdu City, Sichuan Province Applicant before: Chengdu Aikefa Remanufacturing Technology Co.,Ltd. |
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Denomination of invention: A Remanufacturing Automatic CNC Crankshaft Grinder Effective date of registration: 20230810 Granted publication date: 20210409 Pledgee: Sichuan Daying Rural Commercial Bank Co.,Ltd. Pledgor: SICHUAN PAN ASIA POWER TECHNOLOGY CO.,LTD. Registration number: Y2023980051660 |