Anti-deformation tool for heat treatment of thin-wall bearing outer ring
By designing anti-deformation tooling to constrain the bearing rings radially and axially, and combining the design of vent grooves and vent holes, the problem of deformation of thin-walled bearing rings during heat treatment is solved, ensuring the roundness and quality of the rings.
Patent Information
- Application Number
- CN202520203369.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Thin-walled bearing rings are prone to deformation during heat treatment, resulting in poor roundness and affecting product quality.
A deformation-resistant tooling was designed, including components such as a rectangular base plate, a positioning cylinder seat, a horizontal pressure bar, and a longitudinal support beam. By radially and axially constraining the collar and combining the design of ventilation grooves and ventilation holes, uniform heating is achieved.
It effectively prevents deformation of the rings during heat treatment, ensuring the roundness and quality of the rings.
Smart Images
Figure CN223752861U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of ring heat treatment frock, more specifically relates to a kind of anti-deformation frock for thin-wall bearing outer ring heat treatment. BACKGROUND
[0002] Rolling bearing is the key component of aero-engine, bearing plays the role of bearing and transmitting load, and is also the vulnerable part of relatively fragile and frequent failure, its running state has direct influence on the working state of the whole engine, limited by weight and structure space, currently thin-wall bearing is widely used in aero-engine. And thin-wall bearing is also composed of ring, ball and retainer, compared with conventional rolling bearing, the thin-wall bearing used in aviation is more precise, as for the ring of bearing, the thickness of its ring is thinner, when the conventional bearing ring is heat treated, the ring is not easy to deform, but for its thin-wall bearing, when the ring is heat treated, it is easy to deform and become oval structure, resulting in poor roundness of the ring, which affects the quality of product, so the ring of thin-wall bearing needs to solve the problem of deformation due to thin wall when heat treated. SUMMARY
[0003] The utility model discloses a kind of anti-deformation frock for thin-wall bearing outer ring heat treatment, it proposes a kind of heat treatment frock special for thin-wall ring, can be constrained to the radial and axial of ring, can effectively prevent the deformation of ring when heat treated.
[0004] An anti-deformation frock for thin-wall bearing outer ring heat treatment, comprising a rectangular bottom plate, a plurality of positioning holes are formed in the bottom plate, a plurality of positioning cylinder seats are fixedly connected to the upper end surface of the bottom plate and opposite to the positioning holes, a plurality of vertical and annularly distributed air grooves are formed in the cylinder wall of the lower part of the positioning cylinder seat; A plurality of longitudinally distributed horizontal pressing rods are arranged above the bottom plate, and the horizontal pressing rods are respectively inserted into the air grooves of the positioning cylinder seats; A longitudinal support beam is arranged between the left and right adjacent positioning cylinder seats on the bottom plate, and the longitudinal support beam abuts against the upper end surface of the horizontal pressing rod; A vertical guide column is respectively inserted into the longitudinal support beam on the front and rear sides of the horizontal pressing rod, the lower end of the guide column is fixedly connected to the bottom plate, and the upper end of the guide column is fixedly connected to a longitudinal top support rod; A plurality of vertical studs are fixedly connected to the longitudinal support beam, and the upper end of the stud is inserted into the top support rod; A positioning nut is screwed onto the stud, and the positioning nut abuts against the lower end surface of the top support rod.
[0005] Longitudinal handle grooves are respectively formed in the left and right sides of the bottom plate, and a longitudinal support frame in the shape of "N" is arranged below the handle grooves, and the two ends of the support frame are respectively fixedly connected to the lower end surface of the bottom plate.
[0006] Preferably, the positioning cylinder seat is sleeved with a thin-wall bearing ring, the inner wall of the ring abuts against the outer wall of the positioning cylinder seat, the lower end surface of the ring abuts against the bottom plate, and the upper end surface of the ring abuts against the horizontal pressing rod.
[0007] Preferably, the ventilation grooves on the positioning cylinder seat are uniformly distributed in a ring shape around the central axis of the positioning cylinder seat.
[0008] Preferably, a plurality of ventilation holes are formed in the bottom plate between the positioning cylinder seats, and the central axis of the positioning cylinder seat and the central axis of the positioning hole coincide.
[0009] Preferably, the length of the ventilation groove on the positioning cylinder seat is greater than the length of the ring.
[0010] Preferably, the number of guide columns on a single longitudinal support beam is twice that of the horizontal pressing rod.
[0011] Preferably, the width of the support frame is not less than the slot width of the handle slot on the bottom plate.
[0012] The beneficial effects of the present application are as follows:
[0013] The device is a special heat treatment tool for thin-wall rings, which can constrain the radial and axial directions of the ring and effectively prevent the deformation of the ring during heat treatment. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a three-dimensional structure schematic view of the present application;
[0015] Fig. 2 It is a front view structure schematic view of the present application;
[0016] Fig. 3 It is a side view structure schematic view of the present application.
[0017] In the figure: 1, bottom plate; 11, positioning hole; 2, positioning cylinder seat; 21, ventilation groove; 3, horizontal pressing rod; 4, longitudinal support beam; 5, guide column; 6, top support rod; 7, stud; 8, positioning nut; 9, support frame; 10, ring. DETAILED DESCRIPTION
[0018] Embodiment: see Figs. 1 to 3As shown, a kind of anti-deformation tool for thin-wall bearing outer ring heat treatment, including rectangular bottom plate 1, several array distribution positioning holes 11 are formed in bottom plate 1, the upper end surface of bottom plate 1 is fixed with several positioning cylinder seat 2 opposite positioning hole 11, the cylinder wall of lower part of positioning cylinder seat 2 is formed with several vertical and annularly distributed air grooves 21;The upper side of bottom plate 1 is equipped with several longitudinal distribution horizontal pressure bars 3, and horizontal pressure bar 3 is respectively inserted in air groove 21 of positioning cylinder seat 2;Bottom plate 1 is equipped with longitudinal support beam 4 between left and right adjacent positioning cylinder seat 2, and longitudinal support beam 4 is abutted on the upper end surface of horizontal pressure bar 3, and vertical guide column 5 is respectively inserted in longitudinal support beam 4 on the front and rear side of horizontal pressure bar 3, and the lower end of guide column 5 is fixed on bottom plate 1, and the upper end is fixed with longitudinal top support bar 6, and the longitudinal support beam 4 is fixed with several vertical studs 7, and the upper end of stud 7 is inserted in top support bar 6;Positioning nut 8 is screwed on stud 7, and positioning nut 8 is abutted on the lower end surface of top support bar 6;
[0019] The left and right sides of the bottom plate 1 are respectively formed with longitudinal handle grooves 12, and the lower side of the handle groove 12 is provided with a longitudinal and "N" shaped support frame 9, and the both ends of the support frame 9 are respectively fixed on the lower end surface of the bottom plate 1.
[0020] The positioning cylinder seat 2 is sleeved with the sleeve ring 10 of the thin-wall bearing, the inner wall of the sleeve ring 10 is abutted on the outer wall of the positioning cylinder seat 2, the lower end surface of the sleeve ring 10 is abutted on the bottom plate 1, the upper end surface of the sleeve ring 10 is abutted on the horizontal pressure bar 3, the sleeve ring 10 is loaded on the positioning cylinder seat 2, the positioning cylinder seat 2 is used for radially constraining the sleeve ring 10, and the bottom plate 1 and the horizontal pressure bar 3 can axially constrain the sleeve ring 10.
[0021] The air grooves 21 on the positioning cylinder seat 2 are uniformly distributed in a ring shape around the central axis of the positioning cylinder seat 2, when the sleeve ring 10 passes through the heat treatment furnace, the hot gas flow can act on the inner wall of the sleeve ring 10 through the positioning hole 11 and the air groove 21, the inner wall and the outer wall of the sleeve ring 10 are contacted with the hot gas flow, which is beneficial to uniform heating of the sleeve ring 10.
[0022] A plurality of air holes 13 are formed on the bottom plate 1 between the positioning cylinder seats 2, the central axis of the positioning cylinder seat 2 and the central axis of the positioning hole 11 coincide, and the positioning cylinder seat 2 is distributed based on the air hole 13.
[0023] The length of the air groove 21 on the positioning cylinder seat 2 is greater than the length of the sleeve ring 10, which is a prerequisite for the positioning cylinder seat 2 to be inserted in the horizontal pressure bar 3.
[0024] The number of guide columns 5 on a single longitudinal support beam 4 is twice the number of horizontal pressure bars 3.
[0025] The width of the support frame 9 is not less than the slot width of the handle groove 12 on the bottom plate 1.
[0026] Working principle: the structure is a kind of thin-wall bearing outer ring heat treatment anti-deformation tool, the structure of anti-deformation tool is as shown in Fig. 1 The main body of the structure is a bottom plate 1 that can place the sleeve ring 10, the bottom plate 1 is placed on the conveying chain belt of the heat treatment furnace through the support frame 9, the lower side of the bottom plate 1 can be ventilated, and the sleeve ring 10 is positioned by being sleeved on the positioning cylinder seat 2 and being pressed by the horizontal pressing rod 3, when the sleeve ring 10 enters the heat treatment furnace, the hot air flow can act on the inner and outer walls of the sleeve ring 10, the heat treatment of the sleeve ring 10 is realized, when the sleeve ring 10 is deformed, the sleeve ring 10 can be constrained by the horizontal pressing rod 3 and the positioning cylinder seat 2, and the sleeve ring 10 is prevented from becoming oval.
[0027] The embodiments are used to illustrate the present application, and are not used to limit the present application. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be subject to the claims of the present application.
Claims
1. A deformation-preventing tool for heat treatment of a thin-wall bearing outer ring, comprising a rectangular base plate (1) on which a plurality of positioning holes (11) are formed in an array, characterized in that: The upper end surface of the bottom plate (1) is fixed with a plurality of positioning cylinder seats (2) opposite to the positioning holes (11), and a plurality of vertical and annularly distributed ventilation grooves (21) are formed on the cylinder wall of the lower part of the positioning cylinder seat (2); the upper part of the bottom plate (1) is provided with a plurality of longitudinally distributed cross pressure bars (3), the cross pressure bars (3) are respectively inserted into the ventilation grooves (21) of the positioning cylinder seats (2); the longitudinal support beams (4) are arranged between the left and right adjacent positioning cylinder seats (2) on the bottom plate (1), the longitudinal support beams (4) abut against the upper end surface of the cross pressure bars (3), the vertical guide columns (5) are respectively inserted into the longitudinal support beams (4) on the front and rear sides of the cross pressure bars (3), the lower end of the guide column (5) is fixed to the bottom plate (1), and the upper end is fixed with a longitudinal top support bar (6); a plurality of vertical studs (7) are fixed on the longitudinal support beams (4), and the upper end of the stud (7) is inserted into the top support bar (6); the positioning nut (8) is screwed on the stud (7), and the positioning nut (8) abuts against the lower end surface of the top support bar (6); The left and right sides of the bottom plate (1) are respectively formed with longitudinal handle grooves (12), and the lower part of the handle groove (12) is provided with a longitudinal and "N" shaped support frame (9), both ends of the support frame (9) are respectively fixed on the lower end surface of the bottom plate (1).
2. The anti-deformation tooling for heat treatment of a thin-wall bearing outer ring according to claim 1, characterized in that: The positioning cylinder seat (2) is sleeved with a thin-walled bearing ring (10), the inner wall of the ring (10) abuts against the outer wall of the positioning cylinder seat (2), the lower end surface of the ring (10) abuts against the bottom plate (1), and the upper end surface of the ring (10) abuts against the cross pressure bar (3).
3. The anti-deformation tool for heat treatment of a thin-wall bearing outer ring according to claim 1 or 2, characterized in that: The ventilation grooves (21) on the positioning cylinder seat (2) are annularly and uniformly distributed around the center axis of the positioning cylinder seat (2).
4. The anti-deformation tooling for heat treatment of a thin-wall bearing outer ring according to claim 1, characterized in that: A plurality of ventilation holes (13) are formed on the bottom plate (1) between the positioning cylinder seats (2), and the center axis of the positioning cylinder seat (2) coincides with the center axis of the positioning hole (11).
5. The anti-deformation tooling for heat treatment of a thin-wall bearing outer ring according to claim 2, characterized in that: The length of the ventilation groove (21) on the positioning cylinder seat (2) is greater than the length of the ring (10).
6. The anti-deformation tooling for heat treatment of a thin-wall bearing outer ring according to claim 1, characterized in that: The number of guide columns (5) on a single longitudinal support beam (4) is twice the number of cross pressure bars (3).
7. The anti-deformation tooling for heat treatment of a thin-wall bearing outer ring according to claim 1, characterized in that: The width of the support frame (9) is not less than the groove width of the handle groove (12) on the bottom plate (1).