CN213951291U - Hollow roller vertical surface quenching tool equipment - Google Patents

Abstract

The utility model relates to a device for vertical surface quenching of hollow roll. The device comprises an upper fixing block, a lower fixing block, an upper connecting plate, a lower connecting plate, an adjusting screw, a fastening screw, a connecting plate and the like. And the assembly positions of the two ends of the hollow roller are ensured to be coaxial with the excircle and the two ends of the assembly position of the mandrel are ensured to be coaxial in the machining process. The diameter and the width of the groove at the lower end of the core roller are matched with the lower fixing block for processing. During assembly, the mandrel is firstly installed into the hollow shaft, then the upper supporting plate and the lower supporting plate are assembled, the connecting plates are used for pre-connecting (temporarily not fastening), and the hollow roller is supported. And adjusting the positions of the mandrel and the hollow roller according to the position of the groove at the lower end of the mandrel, wherein the lower fixed block can be clamped by the groove at the lower end, the lower fixed block is tightly attached to the lower supporting plate, and after the hollow roller is tightly attached to the upper supporting plate, the lower supporting plate and the lower fixed block, the upper supporting plate and the lower supporting plate are jacked up by using adjusting screws and are attached to the inner hole of the hollow roller. After adjustment, the connecting plate is fastened by using a fastening screw, and the distance between the workpiece upper fixing block and the upper supporting plate is adjusted according to the expansion and contraction size of the hollow roller, is slightly larger than the expansion and contraction size, but must be smaller than the length of the upper supporting plate connected with the hollow roller.

Description

Hollow roller vertical surface quenching tool equipment

Technical Field

The utility model relates to a hollow roller vertical surface quenching tool device which is designed according to the expansion and contraction characteristics of a workpiece, has high coaxiality, can realize adjustable size, is easy to assemble and disassemble and has small stress deformation.

Background

Vertical surface quenching is a surface heat treatment method which is commonly used for roller shaft products. In the heat treatment process, the workpiece is always in a vertical state, and central holes at two ends of the workpiece are positioned according to the requirements of equipment, or a material hanging table is arranged at one end of the central hole at one end, and the like, so that the workpiece and the induction heating device are coaxial. The surface quenching treatment of the hollow roller can be realized only by adding a positioning tool, the carbon content of a quenched part is high, the connection of the two ends of a workpiece is easy to crack by adopting welding, punching and other modes, and great safety and quality risks exist, so that the mechanical connection is more stable and reliable. Because the steel part receives the material expend with heat and contract with cold great influence in preheating, quenching and the cooling process, the work piece hole can produce the shrink after vertical surface hardening cooling of hollow roll, and length extension is elongated, and the rigid connection can lead to the frock card to die, can't take off. For example, in practical operation, when the workpiece is disassembled after quenching, the inner hole of the workpiece shrinks by 0.8mm, and the length of the workpiece elongates by 8mm, so that the tool is blocked and cannot be taken down.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a hollow roller vertical surface quenching tooling device which is convenient to install, fine-adjustable, high in precision, easy to assemble and disassemble, economical and practical and solves the problem that the hollow pipe is used on a vertical quenching machine tool.

The technical scheme of the utility model is realized like this:

a vertical surface quenching tooling device for a hollow roller comprises a mandrel, an upper fixed block and a lower fixed block which are arranged on the mandrel through fastening screws, an upper supporting plate and a lower supporting plate which are arranged on the mandrel through adjusting screws, the upper fixing block and the lower fixing block as well as the upper supporting plate and the lower supporting plate are all concentric circular structures, the concentric circular structure is formed by connecting two semicircular rings, the mandrel is arranged in an inner hole of the concentric circular ring, the two semicircular rings forming the upper fixed block or the lower fixed block are connected together by a fastening screw, the outer circles of the upper supporting plate and the lower supporting plate are both provided with steps, wherein the small excircle of step cooperatees with the hole of hollow roll, sits in the hole of hollow roll and is provided with the clearance with the hole of hollow roll, and the big excircle is sat on the terminal surface of hollow roll, leans on the connecting plate to link together between two semicircle rings that constitute upper strut board or bottom strut board.

The clearance between the inner holes of the upper supporting plate and the lower supporting plate and the mandrel and the clearance between the small outer circles of the outer circle steps of the upper supporting plate and the lower supporting plate and the inner hole of the hollow roller are larger than the shrinkage of the hollow roller.

The lower end of the mandrel is provided with a groove, and the lower fixing block is tightly fixed in the groove through a fastening screw to ensure that the lower support plate is seated above the lower fixing block.

The utility model discloses run through long dabber in hollow roller, the dabber both ends are linked together with quenching equipment and are fixed a position, a supporting plate, the fixed block mills into two halves for the whole circle processing back, be in the same place with screw connection when using, use the backup pad, the fixed block links together dabber and hollow roller, after the installation, hollow roller links together with the frock, when the work piece extends in the quenching process, because adjusting screw area of contact is little, can receive great thrust and rebound along with the extension of hollow roller, can not produce great compressive stress to hollow roller, can prevent effectively that the work piece from warping and internal stress. According to the expansion and contraction coefficient, the adjusting clearance of the tool is designed, and after the workpiece is contracted and expanded, the screw, the tool and the workpiece are separated, so that the tool can be easily taken down. Therefore, the utility model has the advantages of low cost, repeated utilization, convenient operation, time and labor saving and easy popularization.

Drawings

Fig. 1 is an installation schematic diagram of the present invention.

Fig. 2 is a top view of the installation schematic diagram of the present invention.

The labels in the figures are: 1. a lower fixed block; 2. fastening screws; 3. an adjusting screw; 4. a lower support plate; 5. a mandrel; 6. an upper support plate; 7. an upper fixed block; 8. a hollow roll; 9. a connecting plate.

Detailed Description

As shown in fig. 1 and 2, a vertical surface quenching tooling device for hollow rollers comprises a mandrel 5, an upper fixed block 7 and a lower fixed block 1 which are arranged on the mandrel 5 through fastening screws 2, and an upper supporting plate 6 and a lower supporting plate 4 which are arranged on the mandrel 5 through adjusting screws 3, wherein the upper fixed block 7, the lower fixed block 1, the upper supporting plate 6 and the lower supporting plate 4 are concentric circular ring structures, the concentric circular ring structures are formed by connecting two semicircular rings, the mandrel 5 is arranged in an inner hole of the concentric circular ring, the two semicircular rings forming the upper fixed block 7 or the lower fixed block 1 are connected together by the fastening screws 2, the outer circles of the upper supporting plate 6 and the lower supporting plate 4 are provided with steps, wherein the small outer circle of the step is matched with the inner hole of the hollow roller 8, is seated in the inner hole of the hollow roller 8 and is provided with a gap between the inner holes of the hollow roller 8, the large excircle is seated on the end surface of the hollow roller 8, and two semicircular rings forming the upper support plate 6 or the lower support plate 4 are connected together through a connecting plate 9.

The clearance between the inner holes of the upper supporting plate 6 and the lower supporting plate 4 and the mandrel 5 and the clearance between the small excircle of the excircle step of the upper supporting plate 6 and the lower supporting plate 4 and the inner hole of the hollow roller are larger than the shrinkage of the hollow roller.

The lower end of the mandrel 5 is provided with a groove, and the lower fixing block 1 is tightly fixed in the groove through a fastening screw 2 to ensure that the lower supporting plate 4 is seated above the groove.

In use, the upper fixing block, the lower fixing block, the upper supporting plate and the lower supporting plate are semi-circles of two halves, an inner hole is matched with the mandrel to form a certain gap, the excircle of the upper supporting plate and the excircle of the lower supporting plate are provided with two steps, wherein a small excircle is matched with the inner hole of the mandrel to be processed and also form a certain gap, and the gap between the inner hole of the upper supporting plate and the gap between the inner hole of the lower supporting plate and the mandrel and the gap between the small excircle and the inner hole of the hollow roller are larger than the shrinkage of the hollow roller.

Fixing block 1 card will be down in the recess of dabber 5, uses fastening screw 3 firm in connection, packs hollow roller 8 into with bottom suspension fagging 4, pastes tightly with hollow roller 8 and lower fixing block 1, uses adjusting screw 3 to jack up bottom suspension fagging 4 and the laminating of hollow roller hole, links together two semicircle rings of bottom suspension fagging 4 with connecting plate 9. The upper supporting plate 6 is installed to be the same as the lower supporting plate 4, the upper fixing block 7 is fixed on the mandrel 5 by the fastening screw 2, and a shrinkage clearance is reserved between the upper fixing block and the upper supporting plate 6. After quenching is finished, fastening screws and adjusting screws for connecting the upper fixing block and the lower fixing block and for connecting the upper supporting plate and the lower supporting plate are tightly opened, the whole tool is separated, and the mandrel is taken down.

During installation, a mandrel 5 penetrates into a workpiece, the upper end and the lower end of the mandrel are fixed by using the fixing blocks and the upper support plate and the lower support plate, the tool is connected with the workpiece, the coaxiality of the workpiece and the tool is ensured, the hollow roller can deform during vertical quenching, the adjusting gap of the tool is larger than the deformation of the workpiece, and the workpiece can be smoothly taken down after quenching is completed.

A certain gap is reserved between the upper fixing block and the upper supporting plate because the hollow roller can extend in length after quenching,

the gap is smaller than the size of the upper supporting plate extending into the inner hole of the hollow roller, so that the upper supporting plate is prevented from falling off from the workpiece. The hollow roller is quenched from bottom to top during quenching, so that the hollow roller is extended slowly, half upper supporting plates are not arranged in the inner hole of the workpiece when the mandrel is not quenched, and the inner hole is supported by using an adjusting screw. After the adjustment is completed, the halved upper supporting plates are connected and fixed by the connecting plates by using fastening screws. The fixed block card is used to dabber 5 lower extreme in the slot position, prevents that the fixed block from removing. The upper end fixing block and the upper supporting plate have a certain gap which is the extension allowance after the hollow roller is quenched, and the gap is smaller than the size of the inner hole of the hollow roller, so that the upper supporting plate is prevented from falling off from the workpiece. The semicircular annular structure has a half gap between two semicircles, so that water and air can be fully discharged during vertical quenching, and safety hazard caused by rapid expansion of air during hollow roller quenching is prevented.

Claims (4)

1. The utility model provides a vertical surface hardening tool equipment of hollow roll, includes dabber (5), installs last fixed block (7) and lower fixed block (1) on dabber (5) through fastening screw (2), installs last backup pad (6) and bottom suspension fagging (4) on dabber (5) through adjusting screw (3), its characterized in that: the upper fixing block (7), the lower fixing block (1), the upper supporting plate (6) and the lower supporting plate (4) are all concentric circular structures, the concentric circular structure is formed by connecting two semicircular rings, the mandrel (5) is arranged in the inner hole of the concentric circular ring, the two semicircular rings forming the upper fixing block (7) or the lower fixing block (1) are connected together by the fastening screw (2), the outer circles of the upper supporting plate (6) and the lower supporting plate (4) are both provided with steps, wherein the small excircle of the step is matched with the inner hole of the hollow roller (8), a gap is arranged between the small excircle of the step and the inner hole of the hollow roller (8), the large excircle of the step is arranged on the end surface of the hollow roller (8), and two semicircular rings of the upper support plate (6) or the lower support plate (4) are connected together by a connecting plate (9).

2. The vertical surface quenching tooling device for the hollow roller as claimed in claim 1, which is characterized in that: the clearance between the inner holes of the upper supporting plate (6) and the lower supporting plate (4) and the mandrel (5) and the clearance between the small outer circle of the outer circle step of the upper supporting plate (6) and the lower supporting plate (4) and the inner hole of the hollow roller are larger than the shrinkage of the hollow roller.

3. The vertical surface quenching tooling device for the hollow roller as claimed in claim 1, which is characterized in that:

the lower end of the mandrel (5) is provided with a groove, and the lower fixing block (1) is tightly fixed in the groove through a fastening screw (2) to ensure that the lower supporting plate (4) is seated above the groove.

4. The vertical surface quenching tooling device for the hollow roller as claimed in claim 1, which is characterized in that: a gap is arranged between the upper fixing block (7) and the upper supporting plate (6).

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