CN102085621A - Adjusting fixture used for processing matched seam allowance of axle box upper body - Google Patents

Abstract

The invention relates to an adjusting fixture used for processing a matched seam allowance of an axle box upper body, comprising an adjusting base plate, three movable plate positioning pin bushes and two workpiece positioning pin bushes, wherein the three movable plate positioning pin bushes and the two workpiece positioning pin bushes are fixed on the adjusting base plate, the three movable plate positioning pin bushes correspond to the three positioning mounting holes on the movable base plate, the two workpiece positioning pin bushes correspond to connecting holes on workpieces, two movable base plate positioning sticks are sheathed in the movable plate positioning pin bushes and the positioning mounting holes on the movable base plate to realize accurate positioning of a movable fixture and the adjusting fixture, two workpiece positioning core rods are respectively inserted into the connecting holes on the workpieces and the workpiece positioning pin bushes to realize accurate positioning of the workpieces on the movable fixture, and the compression screw is screwed after the workpieces are accurately positioned. The adjusting fixture is specially designed for the movable fixture used for processing a matched seam allowance, and the workpiece can be rapidly and accurately positioned in the movable fixture by applying the adjusting fixture.

Description

A kind of adjustment anchor clamps that are used for the processing of axle box upper body cooperation seam

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 be that upper surface with cartridge housing 11 and engaging lug seat 13 is the location benchmark during lower plane B of engaging lug seat with Cutter Body Processing with Machining Center, 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 adjustment anchor clamps that the axle box upper body cooperates seam processing that are used for.

The described adjustment anchor clamps that are used for the processing of axle box upper body cooperation seam, it comprises transfers the dress base plate, three portable plate set pin sleeves and two workpiece set pin sleeves, three portable plate set pin sleeves and two workpiece set pin sleeves all are fixed on to be transferred on the dress base plate, three portable plate set pin sleeves that the position is set is corresponding with three location and installation holes on the movable floor, two workpiece set pin sleeves that the position is set is corresponding with the connecting hole on the workpiece, two movable floor locating bars are sleeved in the location and installation hole and portable plate set pin sleeve on the movable floor, realize floating holder and transfer the clamping tool accurately to locate, two workpiece location mandrils insert respectively in the connecting hole and workpiece set pin sleeve on the workpiece, the realization workpiece is accurately located on floating holder, and workpiece accurately screws housing screw behind the location.

Further, in the location and installation hole, stud with anti-wearing liner.

It is for the floating holder that cooperates seam processing custom-designed, 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, this adjustment anchor clamps have been arranged, workpiece is located in floating holder quickly and accurately.

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:

The described adjustment anchor clamps that are used for the processing of axle box upper body cooperation seam, as Figure 11, shown in Figure 12, it comprises transfers dress base plate 31, three portable plate set pin sleeves 32 and two workpiece set pin sleeves 33, three portable plate set pin sleeves 32 and two workpiece set pin sleeves 33 all are fixed on to be transferred on the dress base plate 31, three portable plate set pin sleeves 32 that the position is set is corresponding with three location and installation holes 214 on the movable floor 21, two workpiece set pin sleeves 33 that the position is set is corresponding with the connecting hole 15 on the workpiece 1, two movable floor locating bars 4 are sleeved in the location and installation hole 214 and portable plate set pin sleeve 32 on the movable floor 21, realize floating holder 2 and transfer accurately location of clamping tool 3, two workpiece location mandrils 5 insert respectively in the connecting hole 15 and workpiece set pin sleeve 33 on the workpiece 1, realization workpiece 1 is accurately located on floating holder 2, workpiece 1 accurately screws housing screw 223 behind the location, studs with anti-wearing liner in location and installation hole 214.

Described floating holder, 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 are on the same straight line with sphere alignment pin 221 on " 7 " font clamping arm 222.

Workpiece 1 accurately installing and fixing in floating holder 2 must pass through to transfer clamping tool 3, movable floor locating bar 4 and workpiece location mandril 5, concrete adjustment method such as Fig. 3, shown in Figure 4, movable floor in the floating holder 2 21 is shelved on three portable plate set pin sleeves 32 transferring on the clamping tool 3 earlier when workpiece 1 is installed, in location and installation hole 214 and two workpiece set pin sleeves 33 on the accent clamping tool 3 on two movable floor locating bars, the 4 insertion movable floors 21, make floating holder 2 and transfer accurately location of clamping tool 3, insert in the connecting hole 15 and the workpiece set pin sleeve 33 on the accent clamping tool 3 of workpiece 1 by two workpiece location mandrils 5 again, realization workpiece 1 is accurately located on floating holder 2, workpiece 1 accurately screws housing screw 223 behind the location, this adjustment anchor clamps 3 have been arranged, workpiece 1 is located in floating holder 2 quickly and accurately.

Floating holder 2 also must be installed on the workbench of machining center by fixed support 6 after the present invention accurately locatees clamping 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 adjustment anchor clamps that the axle box upper body cooperates seam processing, it is characterized in that: it comprises transfers dress base plate (31), three portable plate set pin sleeves (32) and two workpiece set pin sleeves (33), three portable plate set pin sleeves (32) and two workpiece set pin sleeves (33) all are fixed on to be transferred on the dress base plate (31), three portable plate set pin sleeves (32) that the position is set is corresponding with three the location and installation holes (214) on the movable floor (21), two workpiece set pin sleeves (33) that the position is set is corresponding with the connecting hole (15) on the workpiece (1), two movable floor locating bars (4) are sleeved in the location and installation hole (214) and portable plate set pin sleeve (32) on the movable floor (21), realize floating holder (2) and transfer accurately location of clamping tool (3), two workpiece location mandrils (5) insert respectively in the connecting hole (15) and workpiece set pin sleeve (33) on the workpiece (1), realize workpiece (1) in the upward accurate location of floating holder (2), workpiece (1) accurately screws housing screw (223) behind the location.

2. according to the described adjustment anchor clamps that are 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.

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