CN112453518A - Finish machining device and method for two inner shaft surfaces of steering knuckle - Google Patents
Finish machining device and method for two inner shaft surfaces of steering knuckle Download PDFInfo
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- CN112453518A CN112453518A CN202011483176.9A CN202011483176A CN112453518A CN 112453518 A CN112453518 A CN 112453518A CN 202011483176 A CN202011483176 A CN 202011483176A CN 112453518 A CN112453518 A CN 112453518A
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- steering knuckle
- clamp
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- plate
- cutter
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- 238000003754 machining Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 16
- 238000003825 pressing Methods 0.000 claims abstract description 43
- 238000003801 milling Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/26—Fluid-pressure drives
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- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a finish machining device for two inner axial surfaces of a steering knuckle, which comprises a base, a power head, a cutter bar, a pressing plate and a tailstock, wherein a hydraulic sliding table is arranged on the base, a base plate is arranged on the hydraulic sliding table, a cushion block is fixedly arranged on the base plate, a placing groove is arranged in front of the cushion block, a clamp left side is arranged on one side of the placing groove, a clamp right side is arranged on the other side of the placing groove, a fixing pin is inserted into the middle of the right side of the clamp, a fixed plate is fastened by a bolt on the rear side of the clamp, and the end part of; the middle part on the left of the clamp is provided with a pin hole, the outer side on the left of the clamp is fixedly provided with a first oil cylinder, a movable pin is arranged in the pin hole in a matching mode, the tail end of the movable pin is fixedly connected with an output shaft of the first oil cylinder, the first oil cylinder drives the movable pin to extend out of or retract into the pin hole, the end parts of the fixed pin and the movable pin are in a circular truncated cone shape, and the end parts of the fixed pin and the movable pin are. The invention has simple structure, easy hoisting of the steering knuckle, quick clamping, stable fixation of the steering knuckle support shaft and the fork shaft and small error rate of fine processing of the BC surface of the steering knuckle and the bottom surface between the BC surfaces.
Description
Technical Field
The invention relates to the technical field of automobile part machining, in particular to a finish machining device and a finish machining method for two inner shaft surfaces of a steering knuckle.
Background
In the prior art, because of the irregular shape of the knuckle, there are several difficulties in its processing, as shown in fig. 1, which is a schematic structural diagram of the knuckle, the middle part of the knuckle 4 is a flange plate 4a, one side is a supporting shaft 4b, the other side is provided with two fork shafts, and a fork shaft hole 4C is drilled on the fork shafts. In the prior art, for the surface milling and drilling operations of the fork shaft, in some production procedures, after the flange plate is drilled, the four surfaces of the ABCD are milled, and then the drilling operation is carried out; in some production procedures, four surfaces of a fork shaft ABCD are milled, then holes are drilled, and finally holes in a flange plate are drilled; in any of the above steps, the rough machining operation is performed. The clamping and surface milling step aiming at the fork shaft milling is to position and clamp the steering knuckle usually, and then mill the steering knuckle one surface by one surface sequentially, in order to solve the problem, the related enterprises of the applicant make improvement and innovation, apply for a special tool for rough opening of the wing-shaped steering knuckle, and the special tool adopts a vertical workpiece fixing plate which is provided with a hole-shaped positioning sleeve, a supporting shaft of the steering knuckle is inserted into the positioning sleeve, a flange disc surface of the steering knuckle is pressed through two pressing plates, and the workpiece fixing plate slides to a cutter disc position to mill the inner side surfaces and the bottom surfaces (namely the bottom surfaces between the B surface, the C surface and the BC surface in figure 1, and the four surfaces and the bottom surface of the blank steering knuckle are in a non-flat state), so that the problem of errors caused by repeated positioning of the steering knuckle is effectively solved, but some major technical defects still exist. The milling of two inner shaft surfaces of the fork shaft needs two steps of rough machining and finish machining, the rough opening of the wing-shaped steering knuckle in the prior art is a special tool belonging to the rough machining step (after rough machining, the condition of the steering knuckle is that the bottom surfaces of an ABCD surface and a BC part are roughly milled, the shaft head of the fork shaft is drilled, and a flange plate is drilled), and the rough machining process needs to leave 1-1.5mm machining allowance for the finish machining of the bottom surfaces of the BC surface and the BC part; due to the technical requirements of finish machining, the steering knuckle must be ensured to be in a stable state, and the stable state not only supports the stability of the fork rod, but also stabilizes the fork shaft part to ensure the machining precision.
The wing section knuckle of prior art is roughly opened and is closed ring form when special frock position sleeve, and the work piece fixing plate is vertical plate-like, uses the hoist to insert the difficult operation of back shaft of knuckle in to the position sleeve (usually need at least 30 seconds), and, the weight of two fork axles is greater than the back shaft, leads to the ring flange to be difficult to paste tight positioning disk, and two clamp plates that this is have easily when compressing tightly the ring flange quotation to support and take out slight perk's problem, make during milling process support take out tremble lead to the machining precision problem, cause the blade disc to damage even. In addition, the fork shaft part is not limited and fixed, and can be in a micro-flutter state, which is not beneficial to the fine processing of 1-1.5mm processing allowance, so that the clamping tool is not suitable for the fine processing of the BC surface of the steering knuckle and the bottom surface between the BC surfaces (the error rate is overlarge due to chattering). In view of the technical problems, a finish machining device for two inner shaft surfaces of the steering knuckle and a machining method thereof are needed, wherein the finish machining device is simple in structure, easy to hang the steering knuckle, quick to clamp, capable of stably fixing a steering knuckle supporting shaft and a fork shaft, and small in fine machining error rate of the BC surface of the steering knuckle and the bottom surface between the BC surface.
Disclosure of Invention
The invention aims to solve the technical defects in the prior art and provides a finish machining device and a finish machining method for two inner shaft surfaces of a steering knuckle, which are simple in structure, easy to hang in the steering knuckle, quick to clamp, stable and fixed in a steering knuckle support shaft and a fork shaft and small in finish machining error rate of the BC surface of the steering knuckle and the bottom surface between the BC surface.
In order to achieve the purpose, the invention provides the following technical scheme: a finish machining device for two inner axial surfaces of a steering knuckle comprises a base, a power head, a cutter bar, a pressing plate and a tailstock, wherein a hydraulic sliding table is arranged on the base, a base plate is arranged on the hydraulic sliding table, a cushion block is fixedly arranged on the cushion block, a placing groove is arranged in front of the cushion block, the placing groove is fixedly connected with the cushion block and the cushion plate, a clamp left is arranged on one side of the placing groove, a clamp right is arranged on the other side of the placing groove, the clamp left, the clamp right and the cushion plate are fixedly connected, a fixing pin is inserted into the middle of the right of the clamp, a fixing plate is fastened on the rear side of the clamp through a bolt, the fixing pin is fixedly connected with; the middle part on the left of the clamp is provided with a pin hole, a first oil cylinder is fixedly arranged on the outer side of the left of the clamp, a movable pin is arranged in the pin hole in a matched mode, the tail end of the movable pin is fixedly connected with an output shaft of the first oil cylinder, the first oil cylinder drives the movable pin to extend out of or retract into the pin hole, the end portions of the fixed pin and the movable pin are in a round table shape, and the end portions of the fixed pin and the movable pin are opposite to each other. (the height of the placing groove is 1/5-1/4 of the diameter of the flange plate, namely, the highest point is lower than the lowest end of the pin shaft).
Further, the cushion slope fix on the backing plate, the cushion is the cuboid form, one corner of cushion sets up integrated into one piece's being provided with, unfilled corner department is provided with the second hydro-cylinder, one side of second hydro-cylinder is provided with the pull rod, the second hydro-cylinder is fixed on the backing plate, integrated into one piece's being provided with a groove on the clamp plate, a groove cover is on the pull rod, the upper end threaded connection of pull rod has the big-end bolt, the clamp plate can be followed its groove and moved towards second hydro-cylinder top or back shaft top, the output shaft of second hydro-cylinder moves towards directly over and further upwards jack-up the one end of clamp plate and makes the other end of clamp plate compress tightly.
Further, the standing groove is used for putting into the ring flange of knuckle, further is provided with the cover that rises on the fork shaft hole of knuckle, and one side of the cover that rises is provided with the pterygoid lamina, is provided with the through-hole in the cover that rises, is provided with many expansion joints on the wall of the cover that rises, and the cross-section of through-hole is isosceles trapezoid, through-hole and fixed pin, removable pin's tip phase-match.
Furthermore, after a flange plate of the steering knuckle is hung into the placing groove, the supporting shaft is lapped on the upper surface of the cushion block, the expansion sleeve is placed in the fork shaft hole, the first oil cylinder pushes the movable pin to stretch out from the pin hole on the left side of the clamp, the end part of the movable pin pushes the corresponding expansion sleeve in the corresponding fork shaft hole, the steering knuckle is further pushed to slide towards the right side of the clamp, the fixed pin on the upper right side of the clamp naturally pushes the corresponding expansion sleeve in the corresponding fork shaft hole, the expansion joint of the expansion sleeve expands, the expansion sleeve expands the expansion fork shaft hole, the output shaft of the second oil cylinder upwards jacks one end of the pressing plate, the lever principle is formed due to the limitation of the pull rod, the other end of the pressing plate downwards compresses the supporting shaft to complete three-point positioning, the supporting shaft.
Further, the cutter arbor has been violently put on the base, be fixed with two blade discs on the cutter arbor, one side fixedly connected with unit head of base 20, the fixed tailstock frame that is provided with of opposite side, the one end of cutter arbor passes through the coupling joint with the output shaft of unit head, be provided with the tailstock on the tailstock frame, the fixed bracket that is provided with on the tailstock, the bracket internal fixation has the bracket cover, bearing connection between bracket cover and the cutter arbor, the front end lock joint of bracket cover is connected with the front bearing lid, the rear end of bracket cover is equipped with the back bearing lid, be connected with the cutter arbor pull rod on the cutter arbor, the cutter arbor pull rod is visited to the unit head surface and with unit head outer.
Further, the fixed tailstock regulating plate that sets up in bottom of tailstock, tailstock frame upper portion is provided with the movable groove, the movable groove below is provided with the bracket lead screw, the fixed adjusting collar that is provided with on the tailstock regulating plate, the adjusting collar embedding is in the movable groove, bracket lead screw and adjusting collar threaded connection, rotatory bracket lead screw and then make the adjusting collar drive the tailstock regulating plate along the motion of movable groove, and simultaneously, the cutter arbor pull rod is screwed or unscrewed, realizes the displacement operation of cutter arbor jointly, realizes the position control of blade disc promptly.
Furthermore, a sliding rail is arranged on the base, a sliding groove is formed in the bottom of the hydraulic sliding table and is in sliding connection with the sliding groove, a hydraulic machine is fixed on the left side of the base, an output shaft of the hydraulic machine is connected to the hydraulic sliding table, the hydraulic machine, the first oil cylinder and the second oil cylinder are connected with an external hydraulic system or an oil pressure system, the hydraulic machine drives the hydraulic sliding table to move towards a cutter disc on the cutter bar, and the power head drives the cutter bar to further drive the cutter disc to.
Furthermore, the included angle between the cushion block and the Y axis (vertical marking line in the figure) is 15 degrees, the included angle between the first pressing plate and the X axis (horizontal marking line in the figure) is 15 degrees, the two cutter heads on the cutter bar are arranged side by side, the total width of the two cutter heads is equal to the distance between the surface B and the surface C of the steering knuckle, and the space between the fork shafts of the steering knuckle faces towards the cutter heads.
In order to better achieve the aim of the invention, the invention also provides a machining method of a finish machining device for two inner shaft surfaces of the steering knuckle, wherein the machining method comprises the following steps:
A. hoisting the steering knuckle: a lifting appliance is used for hooking two holes on a flange plate of the steering knuckle, the steering knuckle is lifted above the cushion block, the steering knuckle is placed down, a supporting shaft of the steering knuckle is lapped on the upper surface of the cushion block, the flange plate of the steering knuckle is positioned in the placing groove,
B. and (3) placing an expansion sleeve: an expansion sleeve is placed in a fork shaft hole of the steering knuckle;
C. and (3) clamping: the first oil cylinder pushes the movable pin to extend out of a pin hole on the left of the clamp, the end part of the movable pin props into a corresponding expansion sleeve in a corresponding fork shaft hole, further, the steering knuckle is pushed to slide towards the right of the clamp, a fixing pin on the right of the clamp naturally props into the corresponding expansion sleeve in the corresponding fork shaft hole, an expansion joint of the expansion sleeve expands, the expansion sleeve expands a fork shaft hole, the pressing plate is pushed to enable the end part of one end of the pressing plate to be located above the supporting shaft, an output shaft of the second oil cylinder upwards props up one end of the pressing plate, a lever principle is formed due to the limitation of the pull rod, the supporting shaft is pressed downwards by the other end of the pressing plate, three-point positioning is;
D. and (3) finishing: controlling a hydraulic press to drive a hydraulic sliding table to slide towards a cutter bar, driving a main shaft in a reduction box body to drive a cutter head on the cutter bar to rotate by a motor, enabling a space between fork shafts of a steering knuckle to face the cutter head, and finely processing the bottom surfaces of a B surface C and a BC surface of the steering knuckle by the rotation of the cutter head;
E. after the machining is finished, the hydraulic sliding table returns to the initial position, the first oil cylinder and the second oil cylinder return to the initial position, the pressing plate is manually pulled back, the pressing plate slides to a position away from the upper portion of the supporting shaft along the strip groove, the steering knuckle is lifted out of the cushion block through the lifting appliance, and therefore the milling operation of reserving 1-1.5mm machining allowance for rough machining by one steering knuckle is completed, and the whole time is 1.5-2 minutes.
Further, the step of adjusting the cutter head can be added: the bracket screw rod is in threaded connection with the adjusting sleeve, the bracket screw rod is rotated to further enable the adjusting sleeve to drive the tailstock adjusting plate to move along the movable groove, and meanwhile, the cutter bar pull rod is screwed or unscrewed to jointly realize displacement operation of a cutter head on the cutter bar.
In addition, the application of the finish machining device for the two inner shaft surfaces of the steering knuckle in the surface milling operation of metal products is also within the protection scope of the application.
Furthermore, compared with the clamping of the corner oil cylinder used in the prior art of rough opening, the clamping of the invention uses lever type power to clamp, and is matched with the tensioning of the two expansion sleeves, so that the clamping is more stable and firm, and the axle centers of the two fork shaft holes are ensured to be on the same straight line.
Furthermore, due to the inclined design of the cushion block and the inclined arrangement of the pressure plate, the shape of the steering knuckle is effectively designed, and the fork shaft of the steering knuckle can conveniently face the cutter head in the positive direction.
Furthermore, the two cutter heads in the middle can synchronously process the bottom surface between the B surface and the C surface (namely the bottom surface between the fork shafts), and effectively perform milling operation for reserving 1-1.5mm of processing allowance for rough machining.
Furthermore, the power head is in the prior art, and can be a motor or a speed reducer connected with the motor, and the purpose that the power head drives the cutter bar to rotate is achieved.
Compared with the prior art, the invention has simple structure, easy lifting of the steering knuckle, quick clamping, stable fixation of the steering knuckle support shaft and the fork shaft and small error rate of fine processing of the BC surface of the steering knuckle and the bottom surface between the BC surfaces, and specifically comprises the following steps: after the cutter head is installed, the telescopic moving precision of the cutter rod can be adjusted by a cutter rod pull rod of the power head to be 0.5-5mm, so that the position of the cutter head is more accurate, the processing precision is higher, the cutter head is formed by one-time feeding for about 1.5-2 minutes, and the processing time is saved; the cutter head can be disassembled to replace cutter heads with different sizes, and is suitable for various steering knuckle products. Compared with the prior art, the fixed knuckle in the prior art is not very convenient when the locating sleeve needs to be inserted into the locating sleeve to clamp and hoist (at least 10 seconds are needed for hoisting), in addition, the flange plates are pressed by the two original pressing plates, the fork shaft has no support towards the X-direction pressure of the locating sleeve, and if the locating sleeve is not deep enough, the supporting shaft and the fork shaft of the knuckle are easy to shake. The existing pressing plate is used for pressing, supporting and pumping Y-direction pressure, and meanwhile, the auxiliary expansion sleeve is used for positioning X-direction locking, three-point locking is achieved, the pressing plate is more stable, and the efficiency is higher.
Drawings
FIG. 1 is a schematic view of a knuckle construction;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the left and right clamp cooperating with the expansion sleeve to clamp the clamp of the present invention;
FIG. 4 is a schematic structural view of the expansion sleeve;
FIG. 5 is a cross-sectional view of the expansion sleeve;
FIG. 6 is a schematic front view of the present invention;
FIG. 7 is a right-side view of the present invention.
Reference numerals:
1. backing plate 2, pull rod 3 and pressing plate
4. Knuckle 5, cushion block 6, clamp left
7. Clamp right 8, expansion sleeve 9, first oil cylinder
10. Second oil cylinder 11, base 12, tail seat
13. Tailstock 14, cutter head 15 and cutter bar
16. Power head 17, knife bar pull rod 18, hydraulic sliding table
19. Bracket sleeve 20, bracket 21 and front bearing cover
22. Rear bearing cover 23, tailstock adjusting plate 24 and bracket screw rod
25. Adjusting sleeve
3a, strip groove 4a, flange plate 4b, support shaft
4c. fork shaft hole 6a, pin hole 6b and movable pin
7a, a fixed plate 7b, a fixed pin 8a, an expansion joint
8b. through hole 8c wing plate
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-7, fig. 1 is a schematic structural view of a knuckle; FIG. 2 is a schematic top view of the present invention; FIG. 3 is a schematic view of the left and right clamp cooperating with the expansion sleeve to clamp the clamp of the present invention;
FIG. 4 is a schematic structural view of the expansion sleeve; FIG. 5 is a cross-sectional view of the expansion sleeve; FIG. 6 is a schematic front view of the present invention; FIG. 7 is a right-side view of the present invention. The invention relates to a finish machining device for two inner axial surfaces of a steering knuckle, which comprises a base 11, a power head 16, a cutter bar 15, a pressing plate 3 and a tailstock 12, wherein a hydraulic sliding table 18 is arranged on the base 21, a base plate 1 is arranged on the hydraulic sliding table 28, a cushion block 5 is fixedly arranged on the base plate 1, a placing groove is arranged in front of the cushion block 5, the placing groove is fixedly connected with the cushion block 5 and the base plate 1, a clamp left 6 is arranged on one side of the placing groove, a clamp right 7 is arranged on the other side of the placing groove, the clamp left 6, the clamp right 7 and the base plate 1 are fixedly connected, a fixing pin 7b is inserted in the middle of the clamp right 7, a fixed plate 7a is fastened on the rear side of the clamp 7, the fixing pin 7b is fixedly connected with the fixed plate 7a, and; the middle of the left clamp 6 is integrally provided with a pin hole 6a, the outer side of the left clamp 6 is fixedly provided with a first oil cylinder 9, a movable pin 6b is inserted into the pin hole 6a in a matched mode, the tail end of the movable pin 6b is fixedly connected with an output shaft of the first oil cylinder 9, the first oil cylinder 9 drives the movable pin 6b to stretch out of or retract into the pin hole 6a, the end portions of the fixed pin 7b and the movable pin 6b are in a circular truncated cone shape, and the end portions of the fixed pin 7b and the movable pin 6b are opposite to each other. Cushion 5 slope fix on backing plate 1, cushion 5 is the cuboid form, the one corner of cushion 5 sets up 5a of integrated into one piece, unfilled corner 5a department is provided with second hydro-cylinder 10, one side of second hydro-cylinder 10 is provided with pull rod 2, second hydro-cylinder 10 fixes on backing plate 1, integrated into one piece is provided with strip groove 3a on clamp plate 3, strip groove 3a overlaps on pull rod 2, the upper end threaded connection of pull rod 2 has the big-end bolt, clamp plate 3 can be followed its strip groove and moved towards second hydro-cylinder 10 top or back shaft 4b top, the output shaft of second hydro-cylinder 10 moves forward and upwards jack-up clamp plate 3's one end and makes clamp plate 3's the other end compress tightly downwards and support and take out 4b. The standing groove is used for putting into the ring flange 4a of knuckle 4, further is provided with the cover 8 that rises on the fork shaft hole 4c of knuckle 4, and one side of the cover 8 that rises is provided with pterygoid lamina 8c, is provided with through-hole 8b in the cover 8 that rises, is provided with many expansion joints 8a on the wall of the cover 8 that rises, and the cross-section of through-hole 8b is isosceles trapezoid, through-hole 8 and fixed pin 7b, the tip phase-match of removable pin 6b. After a flange plate 4a of a steering knuckle 4 is hung in a placing groove, a supporting shaft 4b is lapped on the upper surface of a cushion block 5, an expansion sleeve 8 is placed in a fork shaft hole 4c, a first oil cylinder 9 pushes a movable pin 6c to extend out of a pin hole 6a of a clamp left 6, the end portion of the movable pin 6c is jacked into a corresponding expansion sleeve in the corresponding fork shaft hole, further, the steering knuckle 4 is pushed to slide towards a clamp right 7, a fixed pin 7b on the clamp right 7 is naturally jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, an expansion joint 8a of the expansion sleeve 8 expands, the expansion sleeve 8 expands a fork shaft hole 4c, an output shaft of a second oil cylinder 10 upwards jacks one end of a pressing plate 3, a lever principle is formed due to the limitation of a pull rod 2, the other end of the pressing plate 3 downwards compresses the supporting shaft, three-point positioning is completed, the supporting shaft and the two. The cutter arbor 15 has been gone up to the base 20, be fixed with two blade discs 14 on the cutter arbor 15, one side fixedly connected with unit head 16 of base 20, the fixed tailstock 13 that is provided with of opposite side, the one end of cutter arbor 15 passes through the coupling joint with the output shaft of unit head, be provided with tailstock 12 on the tailstock 13, the fixed bracket 20 that is provided with on the tailstock 12, bracket 20 internal fixation has bracket cover 19, bearing connection between bracket cover 19 and the cutter arbor 15, the front end lock joint of bracket cover 19 has front bearing cap 21, the rear end of bracket cover 19 is equipped with back bearing cap 22, be connected with cutter arbor pull rod 17 on the cutter arbor 15, cutter arbor pull rod 17 stretches out to the unit head surface and is fixed with unit head outer wall bolt. The fixed tailstock regulating plate 23 that sets up in bottom of tailstock 12, tailstock 13 upper portion is provided with the movable groove, the movable groove below is provided with bracket lead screw 24, the fixed adjusting collar that is provided with on the tailstock regulating plate 23, the adjusting collar embedding is in the movable groove, bracket lead screw 24 and adjusting collar threaded connection, rotatory bracket lead screw 24 and then make the adjusting collar drive tailstock regulating plate 23 along the motion of movable groove, and simultaneously, cutter arbor pull rod 17 screws or unscrews, realize the displacement operation of cutter arbor 15 jointly, realize the position control of cutter disc 14 promptly. The base 11 is provided with a slide rail, the bottom of the hydraulic sliding table 18 is provided with a slide groove, the slide rail is in sliding connection with the slide groove, the hydraulic machine is fixed on the left side of the base 11, an output shaft of the hydraulic machine is connected to the hydraulic sliding table 18, the hydraulic machine, the first oil cylinder 9 and the second oil cylinder 10 are connected with an external hydraulic system or an oil pressure system, the hydraulic machine drives the hydraulic sliding table 18 to move towards the cutter disc 14 on the cutter bar, and the power head 16 drives the cutter bar 15 to further drive. The included angle between the cushion block 5 and the Y axis is 15 degrees, the included angle between the first pressing plate and the X axis is 15 degrees, the two cutter heads 14 on the cutter bar 15 are arranged side by side, the total width of the two cutter heads is equal to the distance between the surface B and the surface C of the steering knuckle 4, and the space between the fork shafts of the steering knuckle faces towards the cutter heads.
In order to better achieve the aim of the invention, the invention also provides a machining method of a finish machining device for two inner shaft surfaces of the steering knuckle, wherein the machining method comprises the following steps:
A. hoisting the steering knuckle: a lifting appliance is used for hooking two holes on a flange plate of the steering knuckle, the steering knuckle is lifted above the cushion block, the steering knuckle is placed down, a supporting shaft of the steering knuckle is lapped on the upper surface of the cushion block, the flange plate of the steering knuckle is positioned in the placing groove,
B. and (3) placing an expansion sleeve: an expansion sleeve is placed in a fork shaft hole of the steering knuckle;
C. and (3) clamping: the first oil cylinder 9 pushes the movable pin 6c to extend out of the pin hole 6a of the left clamp 6, the end part of the movable pin 6c is jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, the steering knuckle 4 is further pushed to slide towards the right clamp 7, the fixed pin 7b on the right clamp 7 is naturally jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, the expansion joint 8a of the expansion sleeve 8 expands, the expansion sleeve 8 expands the fork shaft hole 4c, the pressing plate is pushed to enable the end part of one end of the pressing plate to be located above the supporting shaft, the output shaft of the second oil cylinder 10 jacks one end of the pressing plate 3 upwards, the lever principle is formed due to the limitation of the pull rod 2, the other end of the pressing plate 3 downwards presses the supporting shaft to complete three-point positioning, the supporting shaft and the two fork shafts are;
D. and (3) finishing: controlling a hydraulic press to drive a hydraulic sliding table to slide towards a cutter bar, driving a main shaft in a reduction box body to drive a cutter head on the cutter bar to rotate by a motor, enabling a space between fork shafts of a steering knuckle to face the cutter head, and finely processing the bottom surfaces of a B surface C and a BC surface of the steering knuckle by the rotation of the cutter head;
E. after the machining is finished, the hydraulic sliding table returns to the initial position, the first oil cylinder and the second oil cylinder return to the initial position, the pressing plate is manually pulled back, the pressing plate slides to a position away from the upper portion of the supporting shaft along the strip groove, the steering knuckle is lifted out of the cushion block through the lifting appliance, and therefore the milling operation of reserving 1-1.5mm machining allowance for rough machining by one steering knuckle is completed, and the whole time is 1.5-2 minutes.
Further, the step of adjusting the cutter head can be added: the bracket screw rod is in threaded connection with the adjusting sleeve, the bracket screw rod is rotated to further enable the adjusting sleeve to drive the tailstock adjusting plate to move along the movable groove, and meanwhile, the cutter bar pull rod is screwed or unscrewed to jointly realize displacement operation of a cutter head on the cutter bar.
In addition, the application of the finish machining device for the two inner shaft surfaces of the steering knuckle in the surface milling operation of metal products is also within the protection scope of the application.
Furthermore, compared with the clamping of the corner oil cylinder used in the prior art of rough opening, the clamping of the invention uses lever type power to clamp, and is matched with the tensioning of the two expansion sleeves, so that the clamping is more stable and firm, and the axle centers of the two fork shaft holes are ensured to be on the same straight line. The inclined design of the cushion block and the inclined arrangement of the pressure plate effectively aim at the shape of the steering knuckle, and the forward direction of the fork shaft of the steering knuckle is convenient to face the cutter head. The middle two cutter heads can synchronously process the bottom surface between the B surface and the C surface (namely the bottom surface between the fork shafts), and effectively perform milling operation for reserving 1-1.5mm of processing allowance for rough processing.
Compared with the prior art, the invention has simple structure, easy lifting of the steering knuckle, quick clamping, stable fixation of the steering knuckle support shaft and the fork shaft and small error rate of fine processing of the BC surface of the steering knuckle and the bottom surface between the BC surfaces, and specifically comprises the following steps: after the cutter head is installed, the telescopic moving precision of the cutter rod can be adjusted by a cutter rod pull rod of the power head to be 0.5-5mm, so that the position of the cutter head is more accurate, the processing precision is higher, the cutter head is formed by one-time feeding for about 1.5-2 minutes, and the processing time is saved; the cutter head can be disassembled to replace cutter heads with different sizes, and is suitable for various steering knuckle products. Compared with the prior art, the fixed knuckle in the prior art is not very convenient when the positioning sleeve needs to be inserted into the clamping and hoisting (the hoisting needs at least 10 seconds) (the hoisting can be completed after 5 seconds), in addition, the flange plates are pressed by the two original pressing plates, the fork shaft has no support towards the X-direction pressure of the positioning sleeve, and if the positioning sleeve is not deep enough, the supporting shaft and the fork shaft of the knuckle are easy to shake. The existing pressing plate is used for pressing, supporting and pumping Y-direction pressure, and meanwhile, the auxiliary expansion sleeve is used for positioning X-direction locking, three-point locking is achieved, the pressing plate is more stable, and the efficiency is higher.
Compared with the prior coarse opening technology, the invention has the advantages of better effect
| Group of | Procedure (ii) | Hoisting, clamping and milling BC surface being BC space bottom surface Total time consumption | Clamping is stable Solidity | Whether or not to store At the second time Clamping fixture | Adding Worker's tool Error of Difference (D) |
| The invention | Firstly drilling a flange hole and then milling a BC surface and a BC interval bottom Face, through two hole hoist and mount clamping of flange more Easy | 1.5-2 minutes | Stabilization | Whether or not | Micro-meter Small |
| Existing coarse Open file technique Operation of the art | Firstly, milling two surfaces of BC and bottom surface between BC, and then drilling The flange hole and the positioning sleeve are circular and can not be hoisted Easy to clamp and not easy to clamp | 5 minutes | A support shaft, All fork shafts Tremor | Whether or not | Big (a) |
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A finish machining device for two inner axial surfaces of a steering knuckle comprises a base (11), a power head (16), a cutter bar (15), a pressing plate (3) and a tailstock (12), wherein a hydraulic sliding table (18) is arranged on the base (21), and is characterized in that a base plate (1) is arranged on the hydraulic sliding table (28), a cushion block (5) is fixedly arranged on the base plate (1), a placing groove is arranged in front of the cushion block (5), the placing groove is fixedly connected with the cushion block (5) and the cushion plate (1), a clamp left (6) is arranged on one side of the placing groove, a clamp right is arranged on the other side of the placing groove, the clamp left (6), the clamp right (7) and the base plate (1) are fixedly connected, a fixing pin (7 b) is inserted in the middle of the clamp right (7), a fixing plate (7 a) is fastened by a bolt on the rear side of the clamp (7), and the fixing pin (7, the end part of the fixing pin (7 b) is extended out of the surface of the right clamp (7); the middle part integrated into one piece of anchor clamps left side (6) is provided with pinhole (6 a), the outside of anchor clamps left side (6) is fixed and is provided with first hydro-cylinder (9), it is provided with movable pin (6 b) to close in pinhole (6 a), the end of movable pin (6 b) and the output shaft fixed connection of first hydro-cylinder (9), first hydro-cylinder (9) drive movable pin (6 b) are stretched out or are withdrawn pinhole (6 a), fixed pin (7 b), the tip of movable pin (6 b) is the round platform form, fixed pin (7 b), the tip of movable pin (6 b) is relative each other.
2. The finish machining device for two inner axial surfaces of the steering knuckle according to claim 1, characterized in that a cushion block (5) is obliquely fixed on a backing plate (1), the cushion block (5) is in a square shape, one corner of the cushion block (5) is provided with an integrally formed part (5 a), a second oil cylinder (10) is arranged at the unfilled corner (5 a), one side of the second oil cylinder (10) is provided with a pull rod (2), the pull rod (2) and the second oil cylinder (10) are fixed on the backing plate (1), a strip groove (3 a) is integrally formed on a pressing plate (3), the strip groove (3 a) is sleeved on the pull rod (2), the upper end of the pull rod (2) is in threaded connection with a big head bolt, the pressing plate (3) can move towards the upper part of the second oil cylinder (10) or the upper part of a supporting shaft (4 b) along the strip groove, the output shaft of the second oil cylinder (10) moves towards the right upper direction to jack up one end of the pressure plate (3) upwards and enable the other end of the pressure plate (3) to press the support rod (4 b) downwards.
3. The finish machining device for two inner shaft surfaces of the steering knuckle is characterized in that a placing groove is used for placing a flange plate (4 a) of the steering knuckle (4), an expansion sleeve (8) is further arranged on a fork shaft hole (4 c) of the steering knuckle (4), a wing plate (8 c) is arranged on one side of the expansion sleeve (8), a through hole (8 b) is formed in the expansion sleeve (8), a plurality of expansion joints (8 a) are arranged on the wall of the expansion sleeve (8), the cross section of the through hole (8 b) is isosceles trapezoid, and the through hole (8) is matched with the end portions of a fixed pin (7 b) and a movable pin (6 b).
4. The finish machining device for two inner shaft surfaces of the steering knuckle according to claim 3, characterized in that after a flange plate (4 a) of the steering knuckle (4) is hung in a placing groove, a supporting shaft (4 b) is lapped on the upper surface of a cushion block (5), an expansion sleeve (8) is placed in a fork shaft hole (4 c), a first oil cylinder (9) pushes a movable pin (6 c) to protrude out of a pin hole (6 a) of a left clamp (6), the end part of the movable pin (6 c) is jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, so that the steering knuckle (4) is pushed to slide towards the right clamp (7), a fixed pin (7 b) on the right clamp (7) naturally jacks into the corresponding expansion sleeve in the corresponding fork shaft hole, an expansion joint (8 a) of the expansion sleeve (8) expands, the expansion sleeve (8) expands the fork shaft hole (4 c), an output shaft of a second oil cylinder (10) pushes up one end of a pressing plate (3), and a lever principle is formed due to the limitation of a pull rod (2), the other end of the pressing plate (3) downwards compresses the supporting shaft to complete three-point positioning, and the supporting shaft and the two fork shafts are limited to avoid vibration during processing.
5. The finish machining device for two inner axial surfaces of the steering knuckle according to claim 4, characterized in that a cutter bar (15) is transversely arranged on a base (20), two cutter heads (14) are fixed on the cutter bar (15), a power head (16) is fixedly connected to one side of the base (20), a tailstock (13) is fixedly arranged on the other side of the base, one end of the cutter bar (15) is connected with an output shaft of the power head through a coupler, a tailstock (12) is arranged on the tailstock (13), a bracket (20) is fixedly arranged on the tailstock (12), a bracket sleeve (19) is fixedly arranged in the bracket (20), the bracket sleeve (19) is connected with the cutter bar (15) through a bearing, a front bearing cover (21) is buckled and connected to the front end of the bracket sleeve (19), a rear bearing cover (22) is assembled at the rear end of the bracket sleeve (19), a cutter bar pull rod (17) is connected to the cutter bar (15), and the cutter bar pull rod (17) extends out of the outer.
6. The finish machining device for two inner axial surfaces of the steering knuckle according to claim 5, characterized in that a tailstock adjusting plate (23) is fixedly arranged at the bottom of the tailstock (12), a movable groove is arranged at the upper part of the tailstock (13), a bracket lead screw (24) is arranged below the movable groove, an adjusting sleeve is fixedly arranged on the tailstock adjusting plate (23) and is embedded in the movable groove, the bracket lead screw (24) is in threaded connection with the adjusting sleeve, the bracket lead screw (24) is rotated to drive the adjusting sleeve to drive the tailstock adjusting plate (23) to move along the movable groove, and meanwhile, the cutter bar pull rod (17) is screwed or unscrewed to jointly realize displacement operation of the cutter bar (15), namely position adjustment of the cutter head (14).
7. The finish machining device for the two inner axial surfaces of the steering knuckle according to claim 5 or 6 is characterized in that a sliding rail is arranged on a base (11), a sliding groove is formed in the bottom of a hydraulic sliding table (18), the sliding rail is in sliding connection with the sliding groove, a hydraulic machine is fixed on the left side of the base (11), an output shaft of the hydraulic machine is connected to the hydraulic sliding table (18), the hydraulic machine, a first oil cylinder (9) and a second oil cylinder (10) are connected with an external hydraulic system or an oil pressure system, the hydraulic machine drives the hydraulic sliding table (18) to move towards a cutter head (14) on the cutter rod, and a power head (16) drives the cutter rod (15) to further drive the cutter.
8. The finish machining device for two inner axial surfaces of the steering knuckle is characterized in that an included angle between the cushion block (5) and the Y axis is 15 degrees, an included angle between the first pressing plate and the X axis is 15 degrees, two cutter heads (14) on the cutter bar (15) are arranged side by side, the total width of the two cutter heads is equal to the distance between the surface B and the surface C of the steering knuckle (4), and a space between fork shafts of the steering knuckle faces the cutter heads.
9. A method of machining a finishing device for both inner axial surfaces of a knuckle according to any one of claims 1 to 8, comprising the steps of:
A. hoisting the steering knuckle: a lifting appliance is used for hooking two holes on a flange plate of the steering knuckle, the steering knuckle is lifted above the cushion block, the steering knuckle is placed down, a supporting shaft of the steering knuckle is lapped on the upper surface of the cushion block, the flange plate of the steering knuckle is positioned in the placing groove,
B. and (3) placing an expansion sleeve: an expansion sleeve is placed in a fork shaft hole of the steering knuckle;
C. and (3) clamping: the first oil cylinder 9 pushes the movable pin 6c to extend out of the pin hole 6a of the left clamp 6, the end part of the movable pin 6c is jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, the steering knuckle 4 is further pushed to slide towards the right clamp 7, the fixed pin 7b on the right clamp 7 is naturally jacked into the corresponding expansion sleeve in the corresponding fork shaft hole, the expansion joint 8a of the expansion sleeve 8 expands, the expansion sleeve 8 expands the fork shaft hole 4c, the pressing plate is pushed to enable the end part of one end of the pressing plate to be located above the supporting shaft, the output shaft of the second oil cylinder 10 jacks one end of the pressing plate 3 upwards, the lever principle is formed due to the limitation of the pull rod 2, the other end of the pressing plate 3 downwards presses the supporting shaft to complete three-point positioning, the supporting shaft and the two fork shafts are;
D. and (3) finishing: controlling a hydraulic press to drive a hydraulic sliding table to slide towards a cutter bar, driving a main shaft in a reduction box body to drive a cutter head on the cutter bar to rotate by a motor, enabling a space between fork shafts of a steering knuckle to face the cutter head, and finely processing the bottom surfaces of a B surface C and a BC surface of the steering knuckle by the rotation of the cutter head;
E. after the machining is finished, the hydraulic sliding table returns to the initial position, the first oil cylinder and the second oil cylinder return to the initial position, the pressing plate is manually pulled back, the pressing plate slides to a position away from the upper portion of the supporting shaft along the strip groove, the steering knuckle is lifted out of the cushion block through the lifting appliance, and therefore the milling operation of reserving 1-1.5mm machining allowance for rough machining by one steering knuckle is completed, and the whole time is 1.5-2 minutes.
10. Use of a finishing device for the two inner axial faces of a knuckle according to any one of claims 1 to 8 in a face milling operation on a metal product.
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| CN202011483176.9A CN112453518A (en) | 2020-12-15 | 2020-12-15 | Finish machining device and method for two inner shaft surfaces of steering knuckle |
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| CN202011483176.9A CN112453518A (en) | 2020-12-15 | 2020-12-15 | Finish machining device and method for two inner shaft surfaces of steering knuckle |
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