Cylinder head inner ring groove finishing device

Abstract

The present application relates to a kind of cylinder cover inner ring groove finishing device, including bottom plate, further comprising: for the rotation movement of the rotation axis in machining process first feed mechanism, for the rotation movement of the rotation axis drive mechanism, milling assembly with variable radius, for the radius change of driving milling cutter assembly secondary feed mechanism, for improving stability and precision tertiary feed mechanism.This finishing device by setting secondary feed mechanism and tertiary feed mechanism, so that blade base can slide along the through slot, change the rotation radius of blade body, so that it has stable multi-surface finishing capacity, when needing finishing, by secondary feed mechanism operation, push blade base telescopic, process ring groove end face, tertiary feed mechanism can lock slide bar, and ring groove circumferential surface is finished, and has the advantages of good stability, high precision.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cylinder cover processing, and particularly relates to a cylinder cover internal ring groove finishing device. BACKGROUND

[0002] A common ring groove machining process is to rotate and feed under the driving of a rotating shaft, and then to complete accurate milling, but in the process of machining the cylinder cover, the internal ring groove shown in the drawing is often encountered. Figure 7 The common ring groove machining tool cannot enter from the narrow opening, and the machining (ring groove side wall and end face finishing) of the internal ring groove often adopts the mode of tool fixing and workpiece rotation, but the cylinder cover is heavy and cannot rotate at high speed, so the finishing of the ring groove is difficult. SUMMARY

[0003] The purpose of the application is to provide a cylinder cover internal ring groove finishing device to solve the above problems.

[0004] The application achieves the above purpose through the following technical scheme:

[0005] A cylinder cover internal ring groove finishing device comprises a base plate and further comprises:

[0006] A first feeding mechanism arranged on the surface of the base plate is used for the feeding movement of the rotating shaft during machining, and comprises a first hydraulic cylinder, a first fixed cylinder connected with the first hydraulic cylinder, and a rotating shaft connected with the first fixed cylinder through a first bearing at the opening of the first fixed cylinder;

[0007] A driving mechanism arranged on the outer side of the first fixed cylinder is used for the rotating movement of the rotating shaft, and comprises a motor with a gear slot at the output shaft end and a gear corresponding to the gear slot of the motor arranged on the outer surface of the rotating shaft;

[0008] A milling assembly arranged at the end of the rotating shaft and capable of extending and retracting along the radial direction of the rotating shaft comprises a blade base, a sliding groove is arranged through the surface of the blade base, and an inclined groove is arranged on the side wall of the sliding groove;

[0009] A second feeding mechanism arranged in the first fixed cylinder is used for driving the blade base to extend and retract, and comprises a second hydraulic cylinder and a second fixed cylinder connected with the second hydraulic cylinder, the second fixed cylinder is fixedly connected with a sliding strip through a second bearing, the sliding strip passes through the sliding groove, and an inclined strip corresponding to the inclined groove is arranged on the side surface of the sliding strip.

[0010] As a further optimization scheme of the application, a through groove is arranged at the end of the rotating shaft for the sliding of the blade base, and a guide wheel is arranged around the blade base and in contact with the inner wall of the through groove, so that the sliding of the blade base and the through groove is smoother and the shaking gap is reduced.

[0011] As a further optimization scheme of the present application, the two ends of the chute are provided with flared openings, and the inclined strip functions similarly to an interrupted thread, which is used to change the axial movement of the slide bar into radial movement of the blade base, and the flared openings are provided to facilitate the entry of the inclined strip into the chute.

[0012] As a further optimization scheme of the present application, the slide bar is divided into a large end and a small end, the large end is cylindrical in cross section and is connected to the second bearing, and the axis of the large end coincides with the axis of the rotating shaft, the small end of the slide bar is square in cross section, and the rotating shaft is internally provided with a slide cavity adapted to the slide bar, and the slide bar needs to be fed during high-speed rotation, so that the slide bar is rotatably connected to the second hydraulic cylinder to facilitate rotation with the rotating shaft, and the axis coincides with the axis of the rotating shaft.

[0013] As a further optimization scheme of the present application, the second fixed cylinder is internally provided with a third feeding mechanism for preventing the slide bar from shaking, the third feeding mechanism comprises a third hydraulic cylinder arranged in the second fixed cylinder, a piston block rotatably connected to the output end of the third hydraulic cylinder, one end of the slide bar is provided with a piston cavity corresponding to the piston block, the other end of the slide bar is provided with a hydraulic cavity in communication with the piston cavity, the hydraulic cavity is internally provided with a first hydraulic plate, the surface of the first hydraulic plate is provided with a pressing block extending to the outside of the slide bar, and the pressing block is used to support the inner wall of the slide cavity, when the ring groove is machined, there is a gap between the slide bar and the slide cavity, in order to prevent the blade base from shaking along the radial direction of the rotating shaft (especially when the circumferential surface of the ring groove is machined, the blade base is easily shaken in the radial direction under the action of the radial force), the third feeding mechanism is provided, the slide bar and the slide cavity are locked through hydraulic transmission, and high stability is achieved.

[0014] As a further optimization scheme of the present application, the edge of the inclined strip is provided with a wedge-shaped chamfer, and the shape of the inclined chute corresponds to the inclined strip, the inclined strip is telescopically arranged with the slide bar through a connecting strip, and the connecting strip extends to the hydraulic cavity inside the slide bar, the second hydraulic plate is arranged at the end of the connecting strip in the hydraulic cavity, further, the connection between the inclined strip and the inclined chute can also cause the blade base to shake along the radial direction of the rotating shaft, in order to solve this problem, the inclined strip is telescopically arranged, and is tightly pressed with the inclined chute under the action of hydraulic power, so as to achieve the effect of preventing shaking.

[0015] The present application has the following advantages:

[0016] The present application is provided with a second feeding mechanism and a third feeding mechanism, so that the blade base can slide along the through groove, the rotating radius of the blade body is changed, the blade base is telescopically extended by the second feeding mechanism to machine the end surface of the ring groove, the slide bar is locked by the third feeding mechanism to machine the circumferential surface of the ring groove, and the present application has the advantages of good stability and high precision. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the schematic diagram of the overall structure of the present application;

[0018] Figure 2 is the schematic diagram of the secondary feeding mechanism and the tertiary feeding mechanism of the present application;

[0019] Figure 3 is the enlarged view of the structure of part A in the present application Figure 1

[0020] Figure 4 is the small-end side sectional view of the slide bar of the present application;

[0021] Figure 5 is the schematic diagram of the small-end cross section of the slide bar of the present application;

[0022] Figure 6 is the schematic diagram of the inclined bar and related components of the present application;

[0023] Figure 7 is the schematic diagram of the ring groove suitable for the present application;

[0024] In the figure: 1, base plate; 2, primary feeding mechanism; 21, primary hydraulic cylinder; 22, first fixed cylinder; 23, first bearing; 3, driving mechanism; 31, rotating shaft; 32, motor; 33, gear; 34, slide cavity; 35, through groove; 4, secondary feeding mechanism; 41, secondary hydraulic cylinder; 42, second fixed cylinder; 43, second bearing; 44, slide bar; 45, inclined bar; 5, milling assembly; 51, blade base; 52, blade body; 53, guide wheel; 54, slide groove; 55, inclined groove; 6, tertiary feeding mechanism; 61, tertiary hydraulic cylinder; 62, third bearing; 63, piston block; 64, piston cavity; 65, hydraulic cavity; 66, first hydraulic plate; 67, abutting block; 68, second hydraulic plate; 69, connecting strip. DETAILED DESCRIPTION

[0025] The following detailed description of the application in conjunction with the accompanying drawings, it is necessary to point out here that the following detailed description is only used to further illustrate the application, can not be understood as limiting the scope of the application, the skilled person can make some non-essential improvements and adjustments to the application according to the above application.

[0026] Example 1

[0027] As shown in Figures 1-6 , a cylinder cover internal ring groove finishing device, comprising a base plate 1, further comprising:

[0028] ​The first feeding mechanism 2 arranged on the surface of the bottom plate 1 is used for the feeding movement of the rotating shaft 31 in the machining process, and comprises a first hydraulic cylinder 21 and a first fixed cylinder 22 connected with the first hydraulic cylinder 21, wherein the first fixed cylinder 22 is open on one side, and the opening is rotatably connected with the rotating shaft 31 through a first bearing 23;

[0029] The driving mechanism 3 arranged outside the first fixed cylinder 22 is used for the rotating movement of the rotating shaft 31, and comprises a motor 32 with a gear slot at the output shaft end and a gear 33 arranged on the outer surface of the rotating shaft 31 and corresponding to the gear slot of the motor 32;

[0030] The milling assembly 5 arranged at the end of the rotating shaft 31 and capable of extending and retracting along the radial direction of the rotating shaft 31 comprises a blade base 51, and a sliding groove 54 is arranged through the surface of the blade base 51, and an inclined groove 55 is arranged on the side wall of the sliding groove 54;

[0031] The second feeding mechanism 4 arranged inside the first fixed cylinder 22 is used for driving the blade base 51 to extend and retract, and comprises a second hydraulic cylinder 41 and a second fixed cylinder 42 connected with the second hydraulic cylinder 41, wherein the second fixed cylinder 42 is fixedly connected with a sliding bar 44 through a second bearing 43, the sliding bar 44 passes through the sliding groove 54, and an inclined bar 45 corresponding to the inclined groove 55 is arranged on the side surface of the sliding bar 44.

[0032] By arranging the second feeding mechanism 4, the blade base 51 can slide along the through groove 35, a blade body 52 is arranged at one end of the blade base 51, when the blade base 51 retracts into the through groove 35, the rotating shaft 31 can directly extend into the inner ring groove, when finishing machining is needed, the second feeding mechanism 4 is operated to drive the sliding bar 44 to slide, the inclined bar 45 on the side surface of the sliding bar 44 drives the blade base 51 to move, so that the blade base 51 extends out of the through groove 35, and the inner ring groove can be finished machined, and the finished machined surface includes the end faces at both ends of the ring groove and the circumferential surface.

[0033] In order to make the sliding of the blade base 51 and the through groove 35 more smooth and reduce the shaking gap, the end of the rotating shaft 31 is provided with the through groove 35 for the sliding of the blade base 51, and the guide wheels 53 in contact with the inner wall of the through groove 35 are arranged around the blade base 51.

[0034] The two ends of the inclined groove 55 are provided with flares, the inclined bar 45 has an effect similar to that of an intermittent thread, which is used for changing the axial movement of the sliding bar 44 into the radial movement of the blade base 51, and the flares are arranged for the purpose of facilitating the inclined bar 45 to enter the inclined groove 55.

[0035] The slide bar 44 is divided into a large end and a small end. The large end is cylindrical in cross section and is connected to the second bearing 43. The axis of the large end coincides with the axis of the rotating shaft 31. The small end of the slide bar 44 is square in cross section. The rotating shaft 31 has a slide cavity 34 inside to accommodate the slide bar 44. The slide bar 44 needs to be fed during high-speed rotation. Therefore, the slide bar 44 is rotatably connected to the second hydraulic cylinder 41 to facilitate rotation with the rotating shaft 31. The axis of the rotation of the slide bar 44 coincides with the axis of the rotating shaft 31. The small end of the slide bar 44 does not need to be located at the center of the rotating shaft 31. The position of the slide bar 44 inside the rotating shaft 31 needs to be comprehensively considered by the extension stroke of the blade base 51, the stability of the blade base 51, and other factors.

[0036] The third feeding mechanism 6 is arranged inside the second fixed cylinder 42 to prevent the slide bar 44 from shaking. The third feeding mechanism 6 includes a third hydraulic cylinder 61 arranged inside the second fixed cylinder 42, a piston block 63 rotatably connected to the output end of the third hydraulic cylinder 61, a piston cavity 64 arranged at one end of the slide bar 44 and corresponding to the piston block 63, a hydraulic cavity 65 arranged at the other end of the slide bar 44 and communicating with the piston cavity 64, and a first hydraulic plate 66 arranged inside the hydraulic cavity 65. The surface of the first hydraulic plate 66 is provided with a clamping block 67 extending to the outside of the slide bar 44. The clamping block 67 is used to support the inner wall of the slide cavity 34.

[0037] When the ring groove is processed, there is a gap between the slide bar 44 and the slide cavity 34. In order to prevent the blade base 51 from shaking along the radial direction of the rotating shaft 31 (especially when the circumferential surface of the ring groove is processed, the blade base 51 is easily shaken in the radial direction under the radial force), the third feeding mechanism 6 is arranged. The clamping block 67 is in close contact with the inner wall of the slide cavity 34 through hydraulic transmission, so as to lock the slide bar 44 and the slide cavity 34, and achieve high stability. The first hydraulic plate 66 and the clamping block 67 can be limited in position according to the corresponding shape and cavity, so as to limit the amplitude of movement.

[0038] Further, the connection between the inclined bar 45 and the inclined groove 55 can also cause the blade base 51 to shake along the radial direction of the rotating shaft 31. In order to solve this problem, the inclined bar 45 is arranged to be telescopic and is tightly squeezed with the inclined groove 55 under the hydraulic power, so as to achieve the effect of preventing shaking. The edge of the inclined bar 45 is provided with a wedge-shaped chamfer, and the shape of the inclined groove 55 corresponds to the inclined bar 45. The inclined bar 45 is arranged to be telescopic with the slide bar 44 through a connecting strip 69. The connecting strip 69 extends to the hydraulic cavity 65 inside the slide bar 44. The second hydraulic plate 68 is arranged at the end of the connecting strip 69 in the hydraulic cavity 65.

[0039] Need to explain, three level feed mechanism 6 is to slide bar 44 and blade base 51 respectively lock to prevent shaking, to achieve with ring groove circumferential surface finishing degree, in the ring groove end face is processed, then need not to lock, because blade base 51 is not subjected to radial force, will not be in radial collapse, furthermore, blade base 51 is subjected to centrifugal force when high speed rotation, in not subjected to radial force condition also has stability, will not shake.

[0040] Also need to explain, the ring groove of cylinder cover has two end faces, as shown in Figure 3 The direction of blade body 52 shown can only process one of the end faces, if another end face is processed, need to enter from another end, as the structure complex cylinder cover, another end can not provide the space of extension, for this, can change the shape of blade base 51, so that it can bidirectional installation blade body 52.

[0041] The embodiment is specific: when the internal ring groove of cylinder cover is formed, the cylinder cover is fixed, the rotating shaft 31 is sent into the ring groove through the first level feed mechanism 2, the motor 32 drives the rotating shaft 31 to rotate at high speed, the second level feed mechanism 4 operates, the blade base 51 is extended out of the through slot 35, the blade body 52 contacts the outermost edge of the ring groove end face, and the end face of the ring groove is precisely machined, the blade base 51 is continuously withdrawn during the machining process, and the end face of the ring groove is precisely machined from the outside to the inside. The reason for machining from the outer ring to the inner ring is that the blade base 51 has centrifugal force when rotating at high speed, and will not shake without radial thrust.

[0042] When the ring groove is circumferentially machined, the blade base 51 is extended, the third level feed mechanism 6 operates, the hydraulic chamber 65 is pressurized, the abutting block 63 is extended, abuts against the inner wall of the sliding cavity 34, locks the slide bar 44, and the same inclined bar 45 is pushed out, and is tightly combined with the inclined groove 55 through the wedge-shaped side, to prevent shaking.

[0043] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. A cylinder head inner ring groove finishing device comprising a base plate (1), characterized in that: Also includes: The first feeding mechanism (2) is arranged on the surface of the bottom plate (1), which is used for the feeding movement of the rotating shaft (31) in the processing process, including a first hydraulic cylinder (21), a first fixed cylinder (22) connected with the first hydraulic cylinder (21), the first fixed cylinder (22) is single-sided opening, the opening is rotatably connected with the rotating shaft (31) through the first bearing (23); The driving mechanism (3) is arranged outside the first fixed cylinder (22), which is used for the rotating movement of the rotating shaft (31), including the motor (32) with gear slot at the output shaft end, the outer surface of the rotating shaft (31) is provided with the gear (33) corresponding to the gear slot of the motor (32); The milling assembly (5) is arranged at the end of the rotating shaft (31) and extends radially along the rotating shaft (31), including a blade base (51), a sliding groove (54) is arranged on the surface of the blade base (51), and a bevel groove (55) is arranged on the side wall of the sliding groove (54); The second feeding mechanism (4) is arranged in the first fixed cylinder (22), which is used for driving the blade base (51) to extend and retract, including a second hydraulic cylinder (41), a second fixed cylinder (42) connected with the second hydraulic cylinder (41), the second fixed cylinder (42) is fixedly connected with a sliding bar (44) through a second bearing (43), the sliding bar (44) passes through the sliding groove (54), and the side surface of the sliding bar (44) is provided with a bevel bar (45) corresponding to the bevel groove (55), and the inside of the rotating shaft (31) is provided with a sliding cavity (34) adapted to the sliding bar (44); The inside of the second fixed cylinder (42) is provided with a third feeding mechanism (6) for preventing the sliding bar (44) from shaking, the third feeding mechanism (6) includes a third hydraulic cylinder (61) arranged in the second fixed cylinder (42), a piston block (63) rotatably connected with the output end of the third hydraulic cylinder (61), one end of the sliding bar (44) is provided with a piston cavity (64) corresponding to the piston block (63), the other end of the sliding bar (44) is provided with a hydraulic cavity (65) in communication with the piston cavity (64), the inside of the hydraulic cavity (65) is provided with a first hydraulic plate (66), the surface of the first hydraulic plate (66) is provided with a pressing block (67) extending to the outside of the sliding bar (44), and the pressing block (67) is used for supporting the inner wall of the sliding cavity (34).

2. The cylinder head inner ring groove finishing device of claim 1, wherein: The end of the rotating shaft (31) is provided with a through groove (35) for the sliding of the blade base (51), and the periphery of the blade base (51) is provided with a guide wheel (53) in contact with the inner wall of the through groove (35).

3. The device for finishing the inner ring groove of a cylinder head according to claim 1, characterized in that: The two ends of the bevel groove (55) are provided with flares.

4. The cylinder head inner ring groove finishing device of claim 1, wherein: The sliding bar (44) is divided into a large end and a small end, the large end is cylindrical in cross section and connected with the second bearing (43), the axis of the large end is coincided with the axis of the rotating shaft (31), and the small end of the sliding bar (44) is square in cross section.

5. The cylinder head inner ring groove finishing device of claim 1, wherein: The edge of the inclined strip (45) is provided with a wedge-shaped chamfer, and the shape of the inclined groove (55) corresponds to the inclined strip (45). The inclined strip (45) is provided with a telescopic connection with the sliding strip (44) through a connecting strip (69), and the connecting strip (69) extends to the hydraulic cavity (65) inside the sliding strip (44). The end of the connecting strip (69) located in the hydraulic cavity (65) is provided with a second hydraulic plate (68).

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