CN102398057B

CN102398057B - Processing method of a creeper tread

Info

Publication number: CN102398057B
Application number: CN 201110326164
Authority: CN
Inventors: 姜希尚; 姜玉飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-25
Filing date: 2011-10-25
Publication date: 2013-03-20
Anticipated expiration: 2031-10-25
Also published as: CN102398057A

Abstract

A processing method of a creeper tread comprises following processing steps: assemble alloy cutter bit within the cutter grooves of two boring bars, use knife aligning plate to align the cutter bit to the set size, lay it on the special fixture of the lathe, use four lifting jack to regulate the distance between the boring bar cutter bit and the creeper tread axle hole, clamp the creeper tread, finish processing the first row holes, unload machine head fixture, centre rest, and tailstock centre, then locate the second boring bar on the lathe, cut the second raw holes. The technology ensures the axiality <=0.5 mm, double row's axial holes' parallelism depth <=0.5 mm. Because of the design of knife aligning plate, the knife alignment is quick which solves the problem of being unable to regulate the distance between the boring bar cutter bit and the axial holes caused by small space at the casting piece processing area. The quality of the creeper tread is greatly improved, and the production cost is lowered.

Description

The processing method of creeper tread

Technical field

The present invention relates to the processing method of creeper tread, specifically the processing method of crawler crane, crane creeper tread.

Background technology

Creeper tread is one of crawler crane (hanging) key components and parts, can its comprehensive mechanical property and pin shaft hole relative dimensions (such as the axiality in aperture, hole, the depth of parallelism of both sides axis hole etc.) guarantee figure paper size and up to standard, are the key factors that directly affects creeper tread service life and reduce disconnected plate rate.

Produce for a long time the material of creeper tread most of adopt potassium steel (compact board) and in, low-alloy steel makes, although and this two steel grade comprehensive mechanical property wearability, cost performance etc. take advantage than other steel grades, the manufacturability of its casting particularly on the manufacturability of machining difficulty larger.

In order to reach the drawing dimensional requirement, have to spend a large amount of man-hours at the milling tools of axis hole and regardless of expense and finish this procedure, but often do not reach the dimensional tolerance of drawing requirement.

The creeper tread that tonnage is large, size is long, the casting distortion is large, it is particularly outstanding that this contradiction seems.What according to investigations, domestic production tonnage manufacturer large, the long creeper tread of size can be up to standard on the pin shaft hole dimensional tolerance at present is few in number.

Summary of the invention

Purpose of the present invention provides and a kind ofly can increase substantially service life, the production efficiency of creeper tread and reduce production costs and reach processing method and the equipment of the creeper tread of drawing dimensional requirement comprehensively.

The technical scheme that adopts:

The processing method of creeper tread comprises following processing step:

1. according to the quantity of need processing axis hole, with the alloy cutter head of 10 * 10 ㎜ milleds, be assembled in the cutter groove of two boring bars;

2. use knife plate cutter head in the size of regulation, and tighten jackscrew with cutter head card jail;

3. assembling is mixed up two boring bars of cutter head distance, be respectively charged in the axis hole of having cleared up creeper tread to be processed;

4. sling and assembled the creeper tread of boring bar, be placed on the special mould clamp of lathe;

5. by head of a bed jig, centre frame, platform tail centre, the fixedly concentric position of boring bar (3 in alignment);

6. four jack installing on the rotation jig are adjusted the distance between boring bar cutter head and creeper tread axis hole, to guarantee uniformity and the axiality of processing axis hole;

7. the chucking creeper tread starts lathe, makes simultaneously feed of each axis hole cutting and since porous cut simultaneously stressed evenly, thereby guaranteed size and the axiality of circular hole;

8. cut complete (the first round) and dismantle head of a bed jig, centre frame, platform tail centre, vertically move the knife rest that jig is housed, second boring bar is positioned on the straight line of the head of a bed, centre frame, platform tail centre;

9. start lathe by the processing method boring second row axis hole of step 7, although this moment, second row creeper tread axis hole was that secondary is processed respectively, owing to be once to be installed and the particularity of Design of Boring Bar, not only guarantee the requirement of axiality≤0.5 ㎜, the more important thing is the extremely harsh requirement that has guaranteed the double axis hole depth of parallelism≤0.5 ㎜;

10. the cutting of the second round is complete, unclamps clamping bolt, platform tail centre, head of a bed jig, creeper tread is unloaded together with two groups of boring bars winch to dimensional gaughing place;

11. with axiality, the depth of parallelism of drift inspection double-row hole, check the lower limit of each axis hole with no-go gage;

So far whole qualified creeper treads are changed over to lower order.

After unloading first creeper tread, at once with adjusted, assembled second creeper tread of boring bar, hang on jig by above-mentioned technological process and process, guaranteed that so namely the work continuity has improved again operating efficiency.

The invention has the advantages that:

1, the distance between n cutter head of usefulness and need processing circular hole is adjusted processing dimension, has solved foundry goods because can't adopt machining, a long-term unsolved difficult problem without positioning reference plane;

2, adopt three-point fix, guaranteed axiality≤0.5mm;

3, foundry goods once is installed, and has guaranteed the harsh requirement of the depth of parallelism≤0.5mm of the double pin shaft holes in both sides;

4, employing is not cut by the multi-station machine swaging clamp head of pin shaft hole restricted number, the simultaneously feed of a plurality of pin shaft hole, and is stressed even, solved the unmanageable problem of wear-resisting high-strength steel alloy, guaranteed the aperture size tolerance;

5, take to process bilateral pin shaft hole boring bar with the scheme that foundry goods once is installed, solved the difficult problem that processing second row pin shaft hole does not unload foundry goods, do not fill boring bar;

6, designed knife plate, quick tool setting, solved the difficult problem that can't adjust boring bar cutter head and axle distance between borehole that causes because casting structure processing place space is very little.

Description of drawings

Fig. 1 is creeper tread machining state schematic diagram.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the A place enlarged diagram of Fig. 2.

Fig. 4 is the drift structural representation.

Fig. 5 is stop-pass rule structural representations.

Fig. 6 is tool setting plate structure schematic diagram.R1 is the boring bar size among the figure, and R2 is the cutter tip size, and R3 is to the knife plate excircle dimension.

Fig. 7 is to the knife plate right view.

The specific embodiment

The processing method of creeper tread comprises following processing step:

1, processes the quantity of axis hole according to need, alloy cutter head 6 with a plurality of 10 * 10mm milleds, be assembled in respectively in the cutter groove 7 corresponding on two boring bars 5 of boring machine 1, use knife plate 11 a plurality of alloy cutter heads 6 respectively in the size of regulation, and tighten respectively corresponding jackscrew 8 with cutter head card jail;

2, assembling is mixed up two boring bars 5 of alloy cutter head 6 distances, be respectively charged in the corresponding axis hole of creeper tread to be processed 4;

3, on the head of a bed jig 3 that sling the creeper tread 4 of having assembled boring bar, is placed in lathe, set up the concentric position of boring bar 5 by the platform tail centre of head of a bed jig 3, centre frame 2 and lathe.

4, rotate four jack installing on the head of a bed jig 3, adjust the distance of boring bar 5 and a plurality of alloy cutter head 6 and creeper tread 4 axis holes;

5, chucking creeper tread 4 starts lathe, makes simultaneously feed of each axis hole cutting; Dismantle head of a bed jig, centre frame, platform tail centre after having cut the first round, vertically move the knife rest that jig is housed, second boring bar 5 is positioned on the straight line of the head of a bed, centre frame and platform tail centre;

6, start lathe and process as stated above the second row axis hole, unclamp clamping bolt after processing the second row axis hole, platform tail centre, head of a bed jig unload creeper tread together with two boring bars, deliver to dimensional gaughing place;

7, check the axiality of double-row hole with drift 9, the depth of parallelism checks the lower limit of each axis hole with no-go gage 10, and get final product.

Claims

1. the processing method of creeper tread is characterized in that: comprise following processing step:

(1), according to the quantity of need processing axis hole, with the alloy cutter head of 10 * 10 ㎜ milleds, be assembled in the cutter groove of two boring bars;

(2), use knife plate cutter head in the size of regulation, and tighten jackscrew with cutter head card jail;

(3), assembling is mixed up two boring bars of cutter head distance, be respectively charged in the axis hole of having cleared up creeper tread to be processed;

(4), sling and assembled the creeper tread of boring bar, be placed on the special mould clamp of lathe;

(5), by head of a bed jig, centre frame, platform tail centre, the fixedly concentric position of boring bar;

(6), rotate four jack installing on the jig, the distance between adjustment boring bar cutter head and creeper tread axis hole, uniformity and the axiality of processing axis hole with assurance;

(7), the chucking creeper tread, start lathe, make simultaneously feed of each axis hole cutting since porous cut simultaneously stressed evenly, thereby guaranteed size and the axiality of circular hole;

Dismantle head of a bed jig, platform tail centre after having cut the first row axis hole, vertically move the knife rest that jig is housed, second boring bar is positioned on the straight line of the head of a bed, centre frame, platform tail centre;

Start lathe and finish the second row axis hole by the processing method cutting processing of step 7, axiality≤0.5 ㎜, the double axis hole depth of parallelism≤0.5 ㎜;

The cutting of the second round is complete, unclamps clamping bolt, platform tail centre, head of a bed jig, creeper tread is unloaded together with two groups of boring bars winch to dimensional gaughing place;

With axiality, the depth of parallelism of drift inspection double-row hole, check the lower limit of each axis hole with no-go gage;

So far whole qualified creeper treads are changed over to lower order.