CN1978102A - On-line mould-repairing method and apparatus for roller-type wedge transverse rolling machine - Google Patents

Abstract

An online mold repairing device and method for a roller cross wedge rolling mill, which includes: a bracket, a guide rail seat, a guide rail, a CA140 tool rest, a lead screw, an axially moving part, and a radially moving part; it is characterized in that the bracket (5 ) adopts a welded structure, and the bracket (5) is installed on the arches on both sides of the rolling mill through studs (16), nuts (17) and washers (18). The guide rail seat (6) is fixed on the support (5) by screws (9), nuts (10) and washers (11); the two ends of the screw (12) are supported by copper sleeves (13), and the copper sleeves (13) are supported by Screw (14), washer (15) are fixed on the rail seat (6). The advantage is that the mold can be repaired online, which greatly reduces the mold repair time and has high precision in repairing the worn part of the mold; the equipment is simple, easy to install and disassemble, and does not need to be equipped with a special mold mandrel and lathe, which greatly saves investment.

Description

An online mold repairing device and repairing method for a roll type cross wedge rolling mill

technical field

The invention belongs to the technical field of plastic forming equipment for shaft parts. In particular, it provides an online mold repair device and repair method for a roller cross wedge rolling mill, which can greatly save mold repair time and has high mold repair accuracy, and is suitable for various types of roller wedges. Die repair for cross rolling mills.

Background technique

Cross wedge rolling is a new near-net-shaping process for shaft parts. Compared with the traditional forging method for producing shaft parts, this process has the advantages of significant material saving and high production efficiency. It has been widely used at present.

After a period of rolling, the cross-wedge rolling die will be worn to varying degrees, which will affect the size and precision of the rolled product. Therefore, it is necessary to repair the mold. The traditional method of repairing the mold is: 1) For the mold with large area of wear, the mold is usually removed from the rolling mill and taken to the lathe for further processing; 2) For the partially worn mold, the method of partial repair welding → grinding → repairing is adopted , the repair accuracy is low.

With the continuous increase of the diameter and length of rolling shaft parts in cross wedge rolling, the size of the body of the rolling mill equipment increases, and the diameter and length of the die of the cross wedge rolling mill also increase accordingly. The traditional method of repairing molds is difficult to meet the production requirements of large shaft parts in cross wedge rolling. Due to the increase in mold size, it is difficult to install and disassemble the mold. At the same time, the guide plate and other related parts must be opened before the mold can be removed. The previously adjusted pass pattern must be readjusted. Therefore, it takes a long time to repair the mold, and the workload is heavy. At the same time, it needs to be equipped with a special mold mandrel and a lathe, which requires a large investment. In addition, the precision of local mold repair is low, which affects the precision and yield of rolled products.

The invention installs a set of mold repairing device on the rolling mill, so that the repair of the cross wedge rolling mold does not need to be disassembled from the rolling mill, but directly completes the mold repairing process on the rolling mill. The mold repairing precision is high, the efficiency is high, and the investment is small , which is the first at home and abroad.

Contents of the invention

The object of the present invention is to provide an online mold repair device and repair method for a cross wedge rolling mill (see Fig. 1, Fig. 2, Fig. 3), and the mold after wear can be repaired without removing it from the rolling mill. Turning processing to realize online repair of molds.

The online mold repairing device of the present invention is made up of support 5, guide rail seat 6, guide rail 26, CA140 knife rest 7, leading screw 12 and other parts. The bracket 5 adopts a welded structure, and the bracket 5 is installed on the arches on both sides of the rolling mill through studs 16, nuts 17 and washers 18. The length of the bracket is equal to the distance between the centerlines of the two arches of the rolling mill.

The axially moving parts are composed of guide rail seat 6, guide rail 26, lead screw 12, tool seat 8 and other parts, wherein guide rail 26 is fixed on the guide rail seat 6 by screw 25, and tool seat 8 and clamping blocks 19, 27 are connected by screw 21, nut 22 is connected with washer 23 and pin 20, and is seated on the guide rail seat 6 and guide rail 26, and they jointly form mobile pair. The knife seat 8 is connected with the leading screw 12 through the threaded sleeve 3 in the form of a screw nut pair to realize the axial movement of the knife seat. The guide rail seat 6 is fixed on the bracket 5 by screws 9 , nuts 10 and washers 11 . The two ends of leading screw 12 are supported by copper sleeve 13, and copper sleeve 13 is fixed on the rail seat 6 by screw 14, washer 15.

The radial moving part is realized by the CA140 tool holder 7, which is a CA140 standard machine tool holder component, and the radial movement of the tool holder is realized by turning the handle.

The main working process of the present invention is as follows: the mold repairing device is installed on the frame of the rolling mill, the turning tool is installed on the CA140 tool holder 7, the radial feed amount is determined by the handle on the tool holder 7, and the motor of the main transmission system of the rolling mill passes through The reduction mechanism and the gear stand drive the rolls of the rolling mill to rotate, and the screw 12 driven by an external power device drives the tool holder 8 and the tool holder 7 to move axially, and the tool on the tool holder realizes cutting and repairing of the mold, and the mold does not need to be removed from the rolling mill.

Compared with the current mold repairing method, the present invention has the following advantages:

1) The mold can be repaired online without disassembling the cross wedge rolling mold, which greatly reduces the mold repair time.

2) Repair the worn part of the mold with high precision.

3) The equipment is simple, easy to install and disassemble, and does not need to be equipped with special mold mandrels and lathes, which greatly saves investment.

4) Greatly save labor intensity.

Description of drawings

Figure 1 is the front view of the mold repairing device, in which, the bracket 5, the rail seat 6, the knife holder 7, the base 8, the screw 9, the nut 10, the gasket 11, the lead screw 12, the copper sleeve 13, the screw 14, the washer 15, the oil Cup 24.

FIG. 2 is a top view of the mold repairing device, wherein the pin 28 is shown.

Fig. 3 is a left view of the mold repairing device, wherein a stud 16, a nut 17, and a washer 18 are shown.

4 is a sectional view of A-A, wherein the clamping block 19, the pin 20, the screw 21, the nut 22, the washer 23, the screw 25, the guide rail 26, and the clamping block 27.

Fig. 5 is a B-B sectional view, wherein a screw 1, a washer 2, a threaded sleeve 3, an adjusting washer 4, and a lead screw 28.

Fig. 6 is a three-dimensional solid diagram of the mold repairing device applied to the H1400 large cross wedge rolling mill according to the present invention.

Detailed ways

Fig. 6 is a specific embodiment of the present invention applied to H1400 large cross wedge rolling mill. The length of the bracket is 1960 mm, and it is installed on both sides of the H1400 large cross wedge rolling mill. The turning tool is installed on the CA140 tool holder 7, and the radial feed amount is determined by the handle on the tool holder 7. The motor of the main transmission system of the rolling mill drives the rolls of the rolling mill to rotate through the reduction mechanism and the gear stand, and the screw 12 is rotated by an external power device. Drive the tool holder 8 and the tool holder 7 to move axially, the tool on the tool holder realizes the cutting and repairing of the mold, and the mold does not need to be removed from the rolling mill.

Claims (4)

1. An online mold repairing device for a cross wedge rolling mill, comprising: a bracket, a guide rail seat, a guide rail, a CA140 tool rest, a lead screw, an axially moving part, and a radially moving part; it is characterized in that the bracket (5) is welded structure, the bracket (5) is installed on the archways on both sides of the rolling mill through studs (16), nuts (17) and washers (18), and the length of the bracket is equal to the distance between the centerlines of the two archways of the rolling mill; (9), nut (10) and washer (11) are fixed on the support (5); the two ends of leading screw (12) are supported by copper sleeve (13), and copper sleeve (13) is by screw (14), washer ( 15) Fix it on the guide rail seat (6). 2. The device according to claim 1, characterized in that the axially moving parts include guide rail seat (6), guide rail (26), lead screw (12), knife seat (8); guide rail (26) passes through the screw ( 25) Fixed on the guide rail seat (6), the knife seat (8) and the clamping block (19, 27) are connected by screws (21), nuts (22), washers (23) and pins (20), and are located on the The guide rail seat (6) and the guide rail (26), they together form a moving pair; the tool seat (8) and the lead screw (12) are connected in the form of a screw nut pair through a threaded sleeve (3), to realize the axial direction of the tool seat sports. 3. The device according to claim 1, characterized in that the radially moving part is realized by a CA140 tool rest (7), and the CA140 tool rest (7) is a part of a CA140 standard machine tool rest, and the radial movement of the tool rest is realized by turning the handle. to move. 4. An online mold repair method for a cross wedge rolling mill, characterized in that the mold repair device is installed on the frame of the rolling mill, and the turning tool is installed on the CA140 tool rest (7), which is determined by the upper handle of the knife rest (7) The radial feed rate is driven by the motor of the main drive system of the rolling mill through the reduction mechanism and the gear stand to drive the rolls of the rolling mill to rotate, and the screw (12) driven by an external power device drives the axial movement of the tool holder (8) and the tool holder (7) , The cutting and repairing of the mold is realized by the tool on the tool holder, and the mold does not need to be removed from the rolling mill.

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