CN220034584U - Heat treatment pressure quenching fixture - Google Patents

Abstract

The utility model discloses a heat treatment pressure quenching clamp, which comprises a centering seat arranged in a central bottom hole of a quenching machine tool workbench and a lower outer supporting ring arranged in the center of the quenching machine tool workbench, wherein an expander seat is movably embedded on the lower outer supporting ring, an expander is arranged on the expander seat, and an outer pressing die matched with a workpiece is arranged above the expander through a machine tool, and is characterized in that: the expander is detachably provided with a lower inner supporting ring, the bottom end of the lower inner supporting ring is fixed on a quenching machine tool workbench through a waist-shaped groove formed in the lower outer supporting ring, and the top end of the lower inner supporting ring is in supporting fit with the end jump inner end surface of a workpiece. The beneficial effects are that: the lower inner supporting ring is arranged on the quenching machine tool workbench through the kidney-shaped groove on the lower outer supporting ring, the expansion amount of the expander just keeps away from the lower inner supporting ring and does not move, the lower inner supporting ring is placed in the kidney-shaped groove and does not move, the quality stability of the end surface of the workpiece in the process of end jump is ensured, and the operation and the debugging are simple and convenient.

Description

Heat treatment pressure quenching fixture

Technical Field

The utility model relates to the technical field of machine manufacturing, in particular to a heat treatment press quenching clamp.

Background

Existing tools for heat treatment are generally divided into three categories: 1. general tools such as hook tongs, basket, tray, general sling, hanger, etc.; 2. the special tooling is specially designed and manufactured for a certain part or a certain process, such as a special quenching press die of the part; 3. standardized tools, i.e. tools that have been standardized by enterprises, industries, departments, such as standard hooks. From the three heat treatment tools, the following characteristics are mainly provided: the universal and standardized tool is mainly regular in machining shape or small in size and is not easy to deform; the special tool is mainly used for processing special-shaped pieces, irregular and easy to deform.

The press quenching machine tool is characterized in that an inner hole of a workpiece needs to be expanded, and in the press quenching process, the lower end face of the workpiece needs to be supported, and the upper end face needs to be pressed. When the workpiece needs to expand inwards in two step holes, the inner end face of the end jump needs to be supported so as to ensure that the inner supporting ring is arranged on the expander, and the expander moves when working, so that the quality of the machined workpiece is unstable, and the machined workpiece is good and bad.

Disclosure of Invention

The utility model aims to provide a heat treatment pressure quenching clamp, wherein a lower inner supporting ring is arranged on a quenching machine tool workbench through a kidney-shaped groove on a lower outer supporting ring, the expansion amount of an expander just keeps away from the lower inner supporting ring and does not move, the lower inner supporting ring is placed in the kidney-shaped groove and does not move, the quality stability of the end surface of a workpiece in end jump during processing is ensured, and the operation and the debugging are simple and convenient.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a thermal treatment press quenching anchor clamps, includes the lower outer supporting ring that installs the centering seat and the quenching lathe workstation center setting in quenching lathe workstation centre bottom hole, the activity inlays on the lower outer supporting ring and is equipped with the expander seat, install the expander on the expander seat, the expander top is equipped with through the lathe with work piece matched with outer moulding-die, its characterized in that: the expander is detachably provided with a lower inner supporting ring, the bottom end of the lower inner supporting ring is fixed on a quenching machine tool workbench through a waist-shaped groove formed in the lower outer supporting ring, and the top end of the lower inner supporting ring is in supporting fit with the end jump inner end surface of a workpiece and drives an axial moving assembly for expanding the expander.

Further, the expander is in clearance fit with a second waist-shaped groove correspondingly arranged on the lower inner supporting ring through a first waist-shaped groove arranged on the expander.

Further, the axial movement assembly comprises an expansion sleeve upper cone and an expansion sleeve lower cone which are slidably arranged at the top and the bottom of the cavity of the expander;

the top of the upper cone of the expansion sleeve is positioned on the expander and is provided with a guide cone, the guide cone sequentially penetrates through the upper cone of the expansion sleeve and the lower cone of the expansion sleeve through a shoulder screw and is locked on the expander seat, and a rectangular spring is sleeved outside the shoulder screw between the upper cone of the expansion sleeve and the lower cone of the expansion sleeve.

Further, the upper end and the lower end of the expander are provided with a first stretching spring and a second stretching spring arranged on the side face of the expander.

Further, the outer pressing die comprises an upper inner pressing ring and an upper outer pressing ring which are externally connected with the upper inner pressing ring, and the upper inner pressing ring and the upper outer pressing ring are locked on the balancer through screws.

Further, a gasket is arranged in the center of the centering seat.

The beneficial effects of the utility model are as follows: according to the characteristics of the workpiece, a waist-shaped groove and a first waist-shaped groove are respectively formed in the lower outer supporting ring and the expander, the waist-shaped grooves formed in the expander and the lower outer supporting ring correspond to the second waist-shaped groove formed in the lower inner supporting ring and are larger than the second waist-shaped groove, the expander can stretch out and draw back along the second waist-shaped groove in the lower inner supporting ring during operation, the lower inner supporting ring is arranged on a quenching machine tool workbench through the waist-shaped groove in the lower outer supporting ring, the stretching amount of the expander just keeps away from the lower inner supporting ring and does not move, the lower inner supporting ring is placed in the waist-shaped groove and does not move, the quality stability of the workpiece during quenching is guaranteed, the operation and debugging are simple and convenient, and the labor intensity is reduced.

Drawings

FIG. 1 is a partial schematic view of a prior art heat treatment press quenching fixture;

FIG. 2 is a schematic structural view of a heat treatment press quenching fixture according to the present utility model;

FIG. 3 is a cross-sectional view of a heat treatment press quenching fixture;

FIG. 4 is a schematic view of the structure of a workpiece;

FIG. 5 is a schematic view of the lower outer support ring in section view in the direction A-A;

FIG. 6 is a schematic view of the lower inner support ring and a cross-sectional view in the B-B direction;

FIG. 7 is a schematic view of a dilator and a cross-sectional view in the C-C direction.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to the drawings, the heat treatment press quenching jig according to the embodiment of the utility model includes a centering seat 18 installed in a center bottom hole of a quenching machine table and a lower outer support ring 15 provided at the center of the quenching machine table.

The lower outer supporting ring 15 is movably embedded with an expander seat 17, the expander seat 17 is provided with an expander 9, an outer pressing die matched with the workpiece 10 is arranged above the expander 9 through a machine tool, the expander 9 is detachably provided with a lower inner supporting ring 14, the bottom end of the lower inner supporting ring 14 is fixed on a quenching machine tool workbench through a waist-shaped groove 20 formed in the lower outer supporting ring 15, the top end of the lower inner supporting ring 14 is in supporting fit with the end-jump inner end surface of the workpiece 10, and an axial moving assembly for driving the expander 9 to expand is arranged.

Specifically, the expander 9 is in clearance fit with the corresponding second waist-shaped groove 21 on the lower inner support ring 14 through the first waist-shaped groove 19 formed on the expander 9, and the lower inner support ring 14 is fixed on a quenching machine tool workbench through the waist-shaped groove 20 formed on the lower outer support ring 15, so that the lower inner support ring 15 is fixed in the waist-shaped groove 20 under the action of the axial moving component, and when the step Kong Nazhang of the workpiece 10 is carried out, the end jump inner end surface is supported by the lower inner support ring 14, so that the processing quality of the workpiece is stable, and the quality of the press quenched workpiece 10 is improved.

When the runout of each end face of the workpiece 10 is not qualified, the lower inner support ring 14 or the lower outer support ring 15 can be polished independently; when the radial runout is unqualified, the guide cone 5 or the expander seat 17 can be solely polished; the radial runout is qualified, and when the outer diameter of the workpiece 10 is increased, the upper cone 6 of the expansion sleeve or the lower cone 13 of the expansion sleeve can be independently polished, so that the operation and the debugging are simple and convenient.

In addition, when the centering seat 18 is placed in the central bottom hole of the quenching machine tool workbench, the gasket 16 is placed in the center of the centering seat 18, and when the height position of the workpiece 10 and the expander 9 are unreasonable, the gasket 16 can be polished to adjust, so that the accuracy of pressure quenching is improved.

Referring to fig. 2 and 3, the axial moving assembly includes an expansion shell upper cone 6 and an expansion shell lower cone 13 slidably mounted on the top and bottom of the expander seat 9.

The guide cone 5 sequentially passes through the upper cone 6 of the expansion sleeve and the lower cone 13 of the expansion sleeve through the shoulder screw 4 and is locked on the expander seat 17, and a rectangular spring 8 is sleeved outside the shoulder screw 4 between the upper cone 6 of the expansion sleeve and the lower cone 13 of the expansion sleeve. Starting the quenching machine tool, enabling the central rod 1 to move downwards, pressing the central rod 1 to the guide cone 5 and moving downwards, expanding the expander 9 by the expansion sleeve upper cone 6 and the expansion sleeve lower cone 13, and simultaneously expanding the workpiece 10 (the total length of the expander 9 is limited and cannot be pressed downwards any more) to a proper size.

It should be noted that, rectangular spring 8 can be with the upward top of expansion shell upper cone 6, and expander 9 inside groove is spacing, continues upwards, and is spacing through shoulder screw 4.

In the concrete implementation, an operator places a workpiece 10 after the fixture is installed and debugged; the operator starts the quenching machine, and the central rod 1 moves downwards; the central rod 1 is pressed to the guide cone 5 and moves downwards, so that the expander 9 is expanded by the upper cone 6 of the expansion sleeve and the lower cone 13 of the expansion sleeve, and the workpiece 10 is tensioned (the total length of the expander 9 cannot be limited and can not be pressed downwards) to a proper size; the upper inner press ring 3 and the upper outer press ring 11 of the machine tool are pressed downwards and automatically adjust balance; after quenching and cooling for a period of time, the central compression bar 1, the upper inner compression ring 3 and the upper outer compression ring 11 of the machine tool are retracted upwards; the rectangular spring 8 pushes the upper cone 6 of the expansion sleeve upwards, the inner groove of the expander 9 is limited and then continues to upwards, and the inner hexagonal cylindrical head shoulder screw 4 is limited; the first tension spring 7 and the second tension spring 12 can be contracted to drive the expander 9 to be contracted; taking a workpiece 10, and detecting whether the workpiece is qualified; the operation is repeated.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a thermal treatment press quenching anchor clamps, includes lower outer supporting ring (15) of installing centering seat (18) and quenching lathe workstation center in the centre bottom hole of quenching lathe workstation, the activity inlays on lower outer supporting ring (15) has been equipped with expander seat (17), install expander (9) on expander seat (17), expander (9) top is equipped with through the lathe with work piece (10) matched with outer moulding-die, its characterized in that: the expander (9) is detachably provided with a lower inner supporting ring (14), the bottom end of the lower inner supporting ring (14) is fixed on a quenching machine workbench through a waist-shaped groove (20) formed in a lower outer supporting ring (15), and the top end of the lower inner supporting ring (14) is in supporting fit with the end jump inner end surface of the workpiece (10) and drives an axial moving assembly for expanding the expander (9).

2. A heat treatment press quenching fixture as claimed in claim 1, wherein the expander (9) is in clearance fit with a corresponding second waist-shaped groove (21) on the lower inner support ring (14) through a first waist-shaped groove (19) formed thereon.

3. A heat treatment press quenching fixture as claimed in claim 1 or 2, wherein the axial moving assembly comprises an expansion sleeve upper cone (6) and an expansion sleeve lower cone (13) slidably mounted at the top and bottom of the expander (9) cavity;

the top of the expansion sleeve upper cone (6) is positioned on the expander (9) and is provided with a guide cone (5), the guide cone (5) sequentially penetrates through the expansion sleeve upper cone (6) and the expansion sleeve lower cone (13) through a shaft shoulder screw (4) and is locked on the expander seat (17), and a rectangular spring (8) is sleeved outside the shaft shoulder screw (4) between the expansion sleeve upper cone (6) and the expansion sleeve lower cone (13).

4. A heat treatment press quenching jig as claimed in claim 3, wherein the expander (9) is provided at its upper and lower ends with a first tension spring (7) and a second tension spring (12) provided at its side.

5. A heat treatment press quenching jig according to claim 1, wherein the outer press mold comprises an upper inner press ring (3) and an upper outer press ring (11) externally connected thereto, the upper inner press ring (3) and the upper outer press ring (11) being screwed to the balancer (2).

6. A heat treatment press quenching fixture as claimed in claim 1, characterized in that the centering seat (18) is centrally provided with a washer (16).