Quenching die for thrust self-aligning roller bearing ring

Abstract

The utility model belongs to the technical field of bearing heat treatment, and provides a quenching die for a thrust self-aligning roller bearing ring. The quenching die comprises an upper die and a lower die, the upper die is of a cylindrical table structure with a protrusion in the center of the lower end face. A plurality of oil flowing grooves I which are uniformly distributed along the circumference are formed in the lower end surface of the upper mold; the bulge of the upper die is inserted into an inner hole of the thrust self-aligning roller bearing ring; the lower die is of a structure with an arc-shaped protrusion in the center of the upper end face. The arc-shaped bulge is matched with an arc-shaped inner hole of the thrust self-aligning roller bearing ring; a plurality of oil flowing grooves II which are uniformly distributed along the circumference are formed in the upper end surface of the lower mold; and the oil flowing groove I and the oil flowing groove II are communicated to jointly form a cooling channel for quenching oil to flow. According to the utility model, the deformation and the size expansion and contraction of the bearing ring after quenching are controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing heat treatment technical field, mainly relates to a kind of quenching die for thrust aligning roller bearing ring. BACKGROUND

[0002] When bearing ring of carburizing steel is quenched second time, deformation will inevitably occur, both size expansion and contraction, and deformation (ellipse and warping) exist;The change of ring size and shape will bring influence to the machining of subsequent process;In order to control the expansion and contraction and deformation, the way of sleeve mould is often adopted for processing when quenching in oil in production process.

[0003] But thrust aligning roller bearing ring has the structural characteristics of low height, raceway is cambered surface, and the width difference of wide and narrow end face is large, the structure of existing tapered roller, cylindrical roller bearing ring quenching die cannot match with the shape of outer ring raceway surface, and the size expansion and contraction, deformation cannot be effectively controlled;The existing die structure is not suitable for sleeve quenching of the outer ring, and a new die structure is needed for this kind of product structure. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of quenching die for thrust aligning roller bearing ring, which can control the deformation and size of the bearing ring after second quenching and tempering.

[0005] The utility model discloses a technical scheme as follows to achieve the above purpose:

[0006] A kind of quenching die for thrust aligning roller bearing ring, quenching die has upper die and lower die;The lower end surface of the upper die has a plurality of oil flow grooves I distributed along the circumference;The protrusion of the upper die is inserted into the inner hole of thrust aligning roller bearing ring;The upper end surface of the lower die has a plurality of oil flow grooves II distributed along the circumference;The oil flow grooves I and the oil flow grooves II are connected to form a cooling channel for quenching oil.

[0007] The oil flow grooves I and the oil flow grooves II are connected to form a cooling channel for quenching oil.

[0008] The utility model discloses a quenching die for thrust aligning roller bearing, which adopts the above technical scheme, and the oil flow grooves I and the oil flow grooves II are arranged to ensure the flow of quenching oil during quenching, fully cool the product, control the deformation and size of the bearing ring after second quenching and tempering. DRAWING DESCRIPTION

[0009] Figure 1The utility model discloses a structure schematic diagram.

[0010] In the drawing: 1, upper mould, 2, upper mould support end face 3, thrust aligning roller bearing ring 4, lower mould, 5, lower mould support end face 6, oil flow groove I, 7, oil flow groove II. DETAILED DESCRIPTION

[0011] The utility model is explained in detail in connection with the drawings and specific examples:

[0012] As Figure 1 The utility model discloses a quenching mould for thrust aligning roller bearing ring, and the quenching mould has upper mould 1 and lower mould 4, the upper mould 1 has protruding cylindrical table body structure in the center of the lower end face, the lower end face of the upper mould has a plurality of oil flow grooves I 6 that are evenly distributed along the circumference, the protrusion of the upper mould is inserted into the inner hole of the thrust aligning roller bearing ring, the lower mould has arc protrusion structure in the center of the upper end face, the arc protrusion cooperates with the arc inner hole of the thrust aligning roller bearing ring, the upper end face of the lower mould has a plurality of oil flow grooves II 7 that are evenly distributed along the circumference, and the oil flow grooves I 6 and the oil flow grooves II 7 are communicated to form the cooling channel of quenching oil flow together.

[0013] The oil flow grooves I and the oil flow grooves II are arranged in close contact with the thrust aligning roller bearing ring.

[0014] The outer surface of the lower mould working surface table body is arc-shaped, the arc-shaped surface is the working surface of the lower mould, the curvature SR (D) is same with the curvature of the arc-shaped raceway of the thrust aligning roller bearing outer ring, a plurality of oil flow grooves are evenly distributed along the circumferential direction on the working surface, so that the raceway is fully cooled by quenching oil during quenching, the lower mould support end face 5 is provided with oil flow grooves 6 that are evenly distributed along the circumferential direction, the oil flow grooves are communicated with the oil flow grooves that are evenly distributed along the circumferential direction of the arc-shaped table body, the flow of quenching oil is ensured during quenching, and the product is fully cooled, the raceway surface of the outer ring is in close contact with the working surface of the lower mould, the mould supports the height B2 (B2 is 1 / 3 of the raceway height) of the raceway, the working size of the lower mould is Phi (D), and is related to the size of the raceway, and the narrow end surface is in close contact with the upper mould support end surface 5.

[0015] Before entering the quenching oil, the ring narrow end surface is first placed downwards on the lower mould, the narrow end surface is kept in close contact with the lower mould support end surface 5, the arc-shaped raceway surface is in close contact with the arc-shaped surface of the lower mould, the cylindrical circular table body of the upper mould is placed downwards on the ring, the outer surface of the cylindrical circular table body is kept in close contact with the outer inner diameter surface of the ring, the ring wide end surface is kept in close contact with the upper mould support end surface 2, after quenching, the mould and the ring are separated easily by beating the support end surface with external force.

[0016] The utility model discloses a kind of thrust self-aligning roller bearing outer ring quenching mould, the outer inner diameter surface of upper mould working surface supports outer ring, the raceway surface of lower mould working surface supports outer ring and is consistent with raceway curvature, upper and lower mould are used in cooperation, the two end faces of sleeve ring are respectively clamped by upper and lower mould base end face, by supporting these parts of outer ring, reach the deformation and size expansion of quenching after this kind of bearing sleeve ring are controlled.

Claims

1. A quenching die for a thrust aligning roller bearing ring, the quenching die having an upper die and a lower die; characterized by: The upper die has a protruding cylindrical table body structure in the center of the lower end face; the lower end face of the upper die has a plurality of oil flow grooves I uniformly distributed along the circumference; the protrusion of the upper die is inserted into the inner hole of the thrust aligning roller bearing ring; the lower die has an arc-shaped protrusion in the center of the upper end face; the arc-shaped protrusion cooperates with the arc-shaped inner hole of the thrust aligning roller bearing ring; the upper end face of the lower die has a plurality of oil flow grooves II uniformly distributed along the circumference; the oil flow grooves I and the oil flow grooves II are connected in communication to jointly form a cooling channel for quenching oil flow.

2. A quenching die for a thrust spherical roller bearing ring according to claim 1, characterized in that: The oil flow grooves I and the oil flow grooves II are arranged in close contact with the thrust aligning roller bearing ring.

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