CN102085620A - Movable fixture used for processing matched seam allowance of axle box upper body - Google Patents
Movable fixture used for processing matched seam allowance of axle box upper body Download PDFInfo
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- CN102085620A CN102085620A CN2011100377771A CN201110037777A CN102085620A CN 102085620 A CN102085620 A CN 102085620A CN 2011100377771 A CN2011100377771 A CN 2011100377771A CN 201110037777 A CN201110037777 A CN 201110037777A CN 102085620 A CN102085620 A CN 102085620A
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Abstract
The invention relates to a movable fixture used for processing a matched seam allowance of an axle box upper body, comprising a movable base plate and three cambered surface positioning clamping device, two inclined planes, a middle plane, two mounting planes and three positioning fixing holes are arranged above the movable base plate, the two cambered surface positioning clamping devices are symmetrically arranged on the two inclined planes at the left section relative to the width center line of the movable base plate, one cambered surface positioning clamping device is arranged on the middle plane at the right section of the movable base plate, each cambered surface positioning clamping device is composed of a spherical positioning pin, a '7'-shaped clamping arm and a compression screw, the spherical positioning pin is fixed on the movable base plate, and the three spherical positioning pins correspond to the surfaces of inner holes at the two ends of bearing holes of a workpiece. The movable fixture is matched with an adjusting fixture when in use, and the positioning of the workpiece can be ensured to be accurate, thus being applicable to one-step clamping processing in a processing center; the percentage of the certificated products can be ensured to reach 99.8%; and meanwhile, the clamping adjustment time is reduced by 105-120 seconds compared with the prior art.
Description
Technical field:
The present invention relates to the axle box upper body and cooperate the seam fixture for processing.
Background technology:
On motor-car, the motor car bogie axle box is similar to the connecting rod on the diesel engine, it is made up of axle box upper body and axle box lower body, the axle box lower body is equivalent to gonnecting rod body, the axle box upper body is equivalent to connecting rod cap, be formed by connecting by butt joint seam and securing member between the two, described axle box upper body such as Fig. 1, shown in Figure 2, it comprises cartridge housing 11, semicircle dead eye 12, engaging lug seat 13 and cooperation seam 14, cooperate seam 14 to be arranged between the engaging lug seat 13, cooperating the length dimension L of seam 14 is 250 millimeters, the diameter of semicircle dead eye 12 is 240 millimeters, cooperate the minimum wall thickness (MINI W.) of seam 14 to have only 5 millimeters, engaging lug seat 13 is 46 millimeters from cooperating the seam 14 length dimension L1 that stretches out, and the width dimensions L2 of engaging lug seat 13 is 168 millimeters, is provided with two connecting holes 15 on engaging lug seat 13, cooperating the following faying face A of seam is 62 millimeters to the height difference H between the lower plane B of engaging lug seat, and tolerance is 0～-0.03 millimeter.
The existing machining process route of this part is:
1. the following faying face A that casts to cooperate seam is a datum level;
2. machining serves as the location benchmark with the upper surface of cartridge housing 11 and engaging lug seat 13, pushes down semicircle dead eye 12; Once finish the processing of the lower plane B of the following faying face A that cooperates seam 14 and cooperate seam, engaging lug seat with machining center;
3. with the connecting hole 15 on the following faying face A processing engaging lug seat 13 that cooperates seam 14 and cooperation seam;
4. will cooperate seam 14 and cooperate the following faying face A of seam to cooperate butt joint with the axle box lower body, and by four connecting holes, 15 usefulness bolts both will be assembled into one, and carry out bore hole processing then, bore hole divides heavy boring, half right boring and right boring.
According to this processing technology, there are two aspect problems:
First, owing to cooperate seam 14 and cooperate the following faying face A of seam and during the lower plane B of engaging lug seat with Cutter Body Processing with Machining Center, be that upper surface with cartridge housing 11 and engaging lug seat 13 is the location benchmark, and this benchmark is inconsistent with the casting benchmark, the surface quality of cartridge housing 11 and engaging lug seat 13 upper surfaces is very poor, cast common shrinkage cavity, shrinkage porosite, defectives such as fleshiness are all concentrated these positions, therefore use them relatively poor as the location baseline stability that cooperates seam 14 processing, in process, cooperate seam 14 to be easy to occur inclined to one side limit phenomenon, statistics according to the applicant, the ratio of semicircle dead eye 12 relative engagement seams 14 off-centre reaches more than 20%, and the percentage of A-class goods of part is not high.
The second, because the ratio on the inclined to one side limit of semicircle dead eye 12 relative engagement seams, 14 generations is higher, make follow-up semicircle dead eye 12 allowance increase, and inhomogeneous, increased the difficulty and the precision of follow-up bore hole processing.
The applicant thinks that by to the existing machinery processing analysis existing mechanical processing technology is reasonable inadequately, explores following mechanical processing technique route by the test applicant:
1. be benchmark is found two connecting holes 15 earlier accurately at the upper surface of engaging lug seat C center with the following faying face A that cooperates seam, the center preprocessing at two connecting holes 15 goes out fabrication hole then, and mills out location pit face D; So just realized the unification of casting technique benchmark and mechanical processing technique benchmark, can make the seam wall thickness allowance of semicircle dead eye 12 both sides even, also can make the allowance of semicircle dead eye 12 more even, for follow-up semicircle dead eye 12 roughing, cooperation seam 14 Milling Process provide reliable and stable location benchmark;
2. fabrication hole and the location pit face D with four connecting holes 15 is benchmark, and roughing semicircle dead eye 12 for follow-up cooperation seam 14 Milling Process provide reliable and stable benchmark, guarantees that semicircle dead eye 12 both sides seam wall thickness are even;
3. semicircle dead eye 12 and the connecting hole 15 with roughing is benchmark, finishes the processing of the lower plane B of the following faying face A that cooperates seam 14 and cooperate seam, engaging lug seat with clamping of machining center, and connecting hole 15 is carried out the processing of shape type;
4. will cooperate seam 14 and cooperate the following faying face A of seam to cooperate butt joint with the axle box lower body, by four connecting holes, 15 usefulness bolts both mounts are integral, carry out bore hole processing then, because the allowance of semicircle dead eye 12 is less, and good evenness, therefore can cancel heavy boring, directly carry out the integrated processing of half right boring and right boring.
Adopt the yield rate of this mechanical processing technique to reach 99%～99.8%.
In this mechanical processing technique, the 3rd step, employed anchor clamps were emphasis, also were difficult points, and those skilled in the art can't obtain without creating work and testing.
Summary of the invention:
The purpose of this invention is to provide a kind of floating holder that the axle box upper body cooperates seam processing that is used for.
A kind of floating holder that is used for the processing of axle box upper body cooperation seam, comprise movable floor and three cambered surface positioning clamping devices, on movable floor, be provided with two inclined-planes, mid-plane, two mounting planes and three location and installation holes, two inclined-planes are arranged on the left side of movable floor symmetrically, two mounting planes are arranged on the right side of movable floor symmetrically, on two mounting planes, respectively be provided with a location and installation hole, on the mid-plane of the left side of movable floor section, be provided with a location and installation hole, two cambered surface positioning clamping devices are arranged on two inclined-planes of left side section symmetrically with respect to the width centreline of movable floor, a cambered surface positioning clamping device is arranged on the mid-plane of the right section of movable floor, described cambered surface positioning clamping device is by the sphere alignment pin, " 7 " font clamping arm and housing screw are formed, the sphere alignment pin is fixed on the movable floor, wherein, two sphere alignment pins are fixed on two inclined-planes of left end on the movable floor, a sphere alignment pin is fixed on the right-hand member of mid-plane on the movable floor, being provided with on the bore area of position to the semicircle dead eye two ends of living workpiece of three sphere alignment pins, wherein, the housing screw spinning and is on the same straight line with the sphere alignment pin on " 7 " font clamping arm.
Further, in the location and installation hole, stud with anti-wearing liner.
Because it is benchmark that mechanical processing technique has adopted the following faying face to cooperate seam, find the center of two connecting holes earlier accurately in the upper surface of engaging lug seat, go out fabrication hole in the preprocessing of the center of two connecting holes then, and mill out location pit face; So just realized the unification of casting technique benchmark and mechanical processing technique benchmark, can make the seam wall thickness allowance of semicircle dead eye both sides even, also can make the allowance of semicircle dead eye more even, for follow-up semicircle dead eye roughing, cooperation seam Milling Process provide reliable and stable benchmark; Fabrication hole and location pit face with four connecting holes is benchmark then, and roughing semicircle dead eye for follow-up cooperation seam Milling Process provides reliable and stable benchmark, guarantees that semicircle dead eye both sides seam wall thickness is even; Semicircle dead eye and connecting hole with roughing is benchmark again, finishes the processing of the lower plane of the following faying face that cooperates seam and cooperate seam, engaging lug seat with clamping of machining center, and connecting hole is carried out the processing of shape type; Last again to cooperate seam and to cooperate the following faying face of seam to cooperate butt joint with the axle box lower body, both devices are integral with bolt by four connecting holes, carry out bore hole processing then, because the few and good evenness of allowance of semicircle dead eye, therefore can cancel heavy boring, directly carry out the integrated processing of half right boring and right boring.By test, according to machining process route of the present invention, the yield rate of machining reaches 99%～99.8%.
Work in-process heart processing workshop section, design the cooperation seam and processed compound anchor clamps, this special fixture has selected semicircle dead eye through roughing as locating surface, earlier the movable floor in the floating holder is shelved on when workpiece is installed and transfers on the clamping tool, in location and installation hole and the portable plate set pin sleeve on the accent clamping tool on two movable floor locating bars insertion movable floors, floating holder is accurately located with transferring the clamping tool, insert in the connecting hole and the workpiece set pin sleeve on the accent clamping tool of workpiece by two workpiece location mandrils again, the realization workpiece is accurately located on floating holder, workpiece accurately screws housing screw behind the location, and then floating holder stood up, two mounting planes on the movable floor and mid-plane are set aside on three root posts on the fixed support, and fix with the location trip bolt, after the floating holder fixed installation, cooperation seam on the workpiece to be processed up, the housing screw end face has the gap between the fixed base plate.Like this, the workpiece work in-process in the heart, as long as clamping just can be finished the Milling Process to the last plane of the following faying face that cooperates seam, cooperation seam, engaging lug seat successively, can also carry out the processing of shape type to connecting hole, guarantee to cooperate seam even to the wall thickness of semicircle dead eye both sides, can not produce asymmetric situation, use checking through reality, adopt this sleeve clamp, the workpiece work in-process operation processing percentage of A-class goods in the heart reaches 99.8%, and clamping is adjusted time ratio prior art shortening 105 seconds～120 seconds simultaneously.
Description of drawings:
Fig. 1, Fig. 2 are workpiece to be machined (axle box upper body) topology example figure;
Fig. 2 is the upward view of Fig. 1;
Fig. 3, Fig. 4 are floating holder and the structural representation of transferring the clamping tool to cooperate;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5, Fig. 6 are floating holder and support bracket fastened annexation schematic diagram;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7～Figure 10 is the structural representation of floating holder;
Wherein, Fig. 7 is a front view, and Fig. 8 is an E-E cutaway view among Fig. 7;
Fig. 9 is the vertical view (dismounting housing screw) of Fig. 7, and Figure 10 is a F-F cutaway view among Fig. 9;
Figure 11, Figure 12 are for transferring the structural representation of clamping tool, and Figure 12 is the vertical view of Figure 11;
Figure 13, Figure 14 are support bracket fastened structural representation, and Figure 14 is the vertical view of Figure 13;
Among the figure: the 1-workpiece; The 2-floating holder; 3-transfers the clamping tool; 4-movable floor locating bar; 5-workpiece location mandril; The 6-fixed support; 7-locatees trip bolt; The 11-cartridge housing; 12-semicircle dead eye; 13-engaging lug seat; 14-cooperates seam; The 15-connecting hole; A-cooperates the following faying face of seam; The lower plane of B-engaging lug seat; The upper surface of C-engaging lug seat; D-location pit face; The 21-movable floor; The 211-inclined-plane; The 212-mid-plane; The 213-mounting plane; 214-location and installation hole; 22-cambered surface positioning clamping device; 221-sphere alignment pin; The 222-clamping arm; The 223-housing screw; 31-transfers the dress base plate; 32-portable plate set pin sleeve; 33-workpiece set pin sleeve; The high column of 61-; The short column of 62-; The 63-fixed base plate.
The specific embodiment:
Introduce the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:
A kind of floating holder that is used for the processing of axle box upper body cooperation seam, as Fig. 7～shown in Figure 10, it comprises movable floor 21 and three cambered surface positioning clamping devices 22, on movable floor 21, be provided with two inclined-planes 211, mid-plane 212, two mounting planes 213 and three location and installation holes 214, two inclined-planes 211 are arranged on the left side of movable floor 21 symmetrically, two mounting planes 213 are arranged on the right side of movable floor 21 symmetrically, on two mounting planes 213, respectively be provided with a location and installation hole 214, on the mid-plane 212 of the left side of movable floor 21 section, be provided with a location and installation hole 214, two cambered surface positioning clamping devices 22 are arranged on two inclined-planes 211 of left side section symmetrically with respect to the width centreline of movable floor 21, a cambered surface positioning clamping device 22 is arranged on the mid-plane 212 of movable floor 21 right sections, described cambered surface positioning clamping device 22 is by sphere alignment pin 221, " 7 " font clamping arm 222 and housing screw 223 are formed, sphere alignment pin 221 is fixed on the movable floor 21, wherein, two sphere alignment pins 221 are fixed on two inclined-planes 211 of left end on the movable floor 21, a sphere alignment pin 221 is fixed on the right-hand member of mid-plane 212 on the movable floor 21, being provided with on the bore area of position to semicircle dead eye 12 two ends of living workpiece 1 of three sphere alignment pins 221, wherein, housing screw 223 spinnings and are on the same straight line with sphere alignment pin 221 on " 7 " font clamping arm 222.
The present invention must be installed on the workbench of machining center by fixed support 6 and just can process, as Fig. 5, shown in Figure 6, described fixed support 6 is as Figure 13, shown in Figure 14, it is by two high columns 61, short column 62 and fixed base plate 63 are formed, two high columns 61 and a short column 62 all are fixed on the fixed base plate 63, the distributing position of three root posts is corresponding with three location and installation holes 214 on the movable floor 21, center at every root post all is provided with screwed hole, two mounting planes 213 on the movable floor 21 of floating holder 2 and mid-plane 212 set aside on three root posts and with location trip bolt 7 fixing after, after floating holder 2 fixed installations, cooperation seam 14 on the workpiece to be processed 1 up, housing screw 223 end faces have the gap between fixed base plate 63; At this moment, promptly can start machining center finish successively to cooperate seam 14 and cooperate seam following faying face A, engaging lug seat lower plane B and connecting hole 15 carried out the processing of shape type.
Claims (2)
1. one kind is used for the floating holder that the axle box upper body cooperates seam processing, it is characterized in that: comprise movable floor (21) and three cambered surface positioning clamping devices (22), on movable floor (21), be provided with two inclined-planes (211), mid-plane (212), two mounting planes (213) and three location and installation holes (214), two inclined-planes (211) are arranged on the left side of movable floor (21) symmetrically, two mounting planes (213) are arranged on the right side of movable floor (21) symmetrically, on two mounting planes (213), respectively be provided with a location and installation hole (214), on the mid-plane (212) of the left side of movable floor (21) section, be provided with a location and installation hole (214), two cambered surface positioning clamping devices (22) are arranged on two inclined-planes (211) of left side section symmetrically with respect to the width centreline of movable floor (21), a cambered surface positioning clamping device (22) is arranged on the mid-plane (212) of the right section of movable floor (21), described cambered surface positioning clamping device (22) is by sphere alignment pin (221), " 7 " font clamping arm (222) and housing screw (223) are formed, sphere alignment pin (221) is fixed on the movable floor (21), wherein, two sphere alignment pins (221) are fixed on movable floor (21) and go up on two inclined-planes (211) of left end, a sphere alignment pin (221) is fixed on the right-hand member of the mid-plane (212) on the movable floor (21), being provided with on the bore area of position to semicircle dead eye (12) two ends of living workpiece of three sphere alignment pins (221), wherein, housing screw (223) spinning and is on the same straight line with sphere alignment pin (221) on " 7 " font clamping arm (222).
2. according to the described floating holder that is used for the processing of axle box upper body cooperation seam of claim 1, it is characterized in that: in location and installation hole (214), stud with anti-wearing liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100377771A CN102085620A (en) | 2011-02-14 | 2011-02-14 | Movable fixture used for processing matched seam allowance of axle box upper body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100377771A CN102085620A (en) | 2011-02-14 | 2011-02-14 | Movable fixture used for processing matched seam allowance of axle box upper body |
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| Publication Number | Publication Date |
|---|---|
| CN102085620A true CN102085620A (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100377771A Pending CN102085620A (en) | 2011-02-14 | 2011-02-14 | Movable fixture used for processing matched seam allowance of axle box upper body |
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| CN (1) | CN102085620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403184A (en) * | 2015-12-31 | 2016-03-16 | 无锡透平叶片有限公司 | Fixture for detecting offset amount of offset block |
| CN105537372A (en) * | 2015-12-16 | 2016-05-04 | 天津苑航科技有限公司 | Pneumatic punching machine capable of being used for plates with different thicknesses |
| CN114290183A (en) * | 2021-12-28 | 2022-04-08 | 保定向阳航空精密机械有限公司 | Hydraulic automatic polishing mechanism |
-
2011
- 2011-02-14 CN CN2011100377771A patent/CN102085620A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537372A (en) * | 2015-12-16 | 2016-05-04 | 天津苑航科技有限公司 | Pneumatic punching machine capable of being used for plates with different thicknesses |
| CN105403184A (en) * | 2015-12-31 | 2016-03-16 | 无锡透平叶片有限公司 | Fixture for detecting offset amount of offset block |
| CN105403184B (en) * | 2015-12-31 | 2018-06-01 | 无锡透平叶片有限公司 | A kind of fixture for being used to detect offsetting block offsetting amount |
| CN114290183A (en) * | 2021-12-28 | 2022-04-08 | 保定向阳航空精密机械有限公司 | Hydraulic automatic polishing mechanism |
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Application publication date: 20110608 |