CN217617546U

CN217617546U - Reverse extrusion tooling for forging conical inner ring bearing

Info

Publication number: CN217617546U
Application number: CN202122933831.2U
Authority: CN
Inventors: 段少杰; 杨斯一; 张哲通; 马志杰; 曹俊峰; 兰江涛
Original assignee: LUOYANG LUOLING BEARING SCIENCE AND TECHNOLOGY CO LTD
Current assignee: LUOYANG LUOLING BEARING SCIENCE AND TECHNOLOGY CO LTD
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-10-21
Anticipated expiration: 2031-11-26

Abstract

The utility model provides a circular cone inner race bearing forging anti-extrusion frock, relate to bearing forging frock design field, including branch cover material core and preforming frock, preforming frock includes the upset cake piece, anti-extrusion preforming mould and ejector pin, be equipped with the upset cake piece on the upper portion of anti-extrusion preforming mould, the inside guide chamber that is connected from last to being equipped with in proper order of anti-extrusion preforming mould, the step cavity, necking section and cavity, the thick hypomere of step cavity upper segment is thin, the ejector pin is the step form and sets up in the step cavity, be equipped with the adjusting block between the step surface of ejector pin and the lower part of step cavity upper segment, in the lower part of adjusting block, and be located and be equipped with the spring between the hypomere of step cavity of ejector pin, the lower extreme outside of ejector pin that sets up in the cavity is equipped with the nut, branch cover material core has been placed in the guide chamber, the bottom surface of branch cover material core contacts with the higher authority of ejector pin; the utility model discloses effectively guaranteed the precision of anti-extrusion material base, improved production efficiency.

Description

Reverse extrusion tooling for forging conical inner ring bearing

Technical Field

The utility model belongs to the technical field of bearing forging frock design and specifically relates to a circular cone inner race bearing forges anti-crowded frock is related to.

Background

In order to improve the production efficiency and the material utilization rate in the forging production of the conical bearing ring, the sleeve forging method is generally adopted. However, the heavy-duty large-cone-angle conical bearing ring is difficult to forge in a sleeve forging mode, the diameter of a sleeve separating punch is large due to the fact that the outer ring and the inner ring of the product are basically the same in weight, the diameter of a sleeve separating core is large, when the diameter of the sleeve separating core is larger than the small inner diameter of a reverse extrusion female die of the inner ring, the sleeve separating core is in contact with the conical surface of the reverse extrusion female die when being placed into the reverse extrusion female die, due to line contact, the concentricity of the sleeve separating core and the reverse extrusion female die cannot be guaranteed through manual operation, the large outer diameter of a reverse extrusion blank after reverse extrusion is often eccentric, the large outer diameter local outer chamfer of an inner ring bearing forge piece after reverse extrusion blank reaming is out of tolerance, and if the outer chamfer defect is eliminated, the inner diameter taper of the forge piece is out of tolerance, and potential hazards are brought to the product quality.

Disclosure of Invention

In order to overcome the not enough in the background art, the utility model discloses a design of crowded frock is turned over in circular cone inner race bearing forging.

In order to realize the purpose, the utility model adopts the following technical proposal:

the utility model provides a circular cone inner race bearing forges anti-frock of crowding, including branch cover material core and preforming frock, preforming frock includes the upset cake piece, anti-crowded preforming mould and ejector pin, the upper portion at anti-crowded preforming mould is equipped with the upset cake piece, anti-crowded preforming mould is inside from last to being equipped with the guide chamber that is connected down in proper order, the step cavity, necking section and cavity, the thick hypomere of step cavity upper segment is thin, the ejector pin is the step form and sets up in the step cavity, be equipped with the adjusting block between the step face of ejector pin and the lower part of step cavity upper segment, lower part at the adjusting block, and be located and be equipped with the spring between the hypomere of ejector pin and the hypomere of step cavity, the lower extreme outside of ejector pin of setting in the cavity is equipped with the nut, branch cover material core has been placed in the guide chamber, the bottom surface of branch cover material core contacts with the higher authority of ejector pin.

The conical inner ring bearing forging backward extrusion tooling is characterized in that a guide surface is arranged on the inner wall of a guide cavity, the preformed surface of the material distributing core is a vertical surface, and the material distributing core is a backward extrusion preformed blank which is consistent with the shape of the guide surface after the upper heading cake block is pressed downwards.

The diameter of the neck section of the reverse extrusion tooling for forging the conical inner ring bearing is smaller than the diameter of the lower section of the step cavity and the diameter of the cavity, and the diameter of the cavity is larger than the diameter of the lower section of the step cavity.

The conical inner ring bearing is forged into the backward extrusion tool, and the outer diameter of the nut is larger than the diameter of the neck section.

The utility model discloses a circular cone inner race bearing forge anti-frock of crowded, still include the shaping frock, it includes anti-crowded die, anti-crowded bottom suspension and anti-crowded drift, anti-crowded die hole is unanimous with the external diameter face of anti-crowded preforming blank, anti-crowded bottom suspension sets up in the lower part of anti-crowded die hole, and contacts with the lower face of anti-crowded preforming blank, anti-crowded drift is located anti-crowded preforming blank, anti-crowded preforming blank after the lapse forms anti-crowded blank.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

circular cone inner circle bearing forge anti-crowded frock, through putting branch cover material core 1 and carry out preforming in the preforming frock, the backward extrusion material base of rethread shaping frock formation, there is the spigot surface at anti-crowded preforming mould hole design, the external diameter and the spigot surface contact of branch cover material core, the spigot surface is the perpendicular, can guarantee that branch cover material core and anti-crowded preforming mould are concentric, branch cover material core also sets up with anti-crowded die concentrically, the precision of anti-crowded material base has effectively been guaranteed, the size of forging behind the material base reaming, outward appearance, geometric accuracy can both satisfy the product requirement, and the reaming time also reduces to some extent, and the production efficiency is improved, the performance of enterprises is improved, enterprise competitiveness is promoted.

Drawings

Fig. 1 is a schematic structural diagram of the sleeve core 1 before extrusion.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is the structure schematic diagram of the forming tool and the backward extrusion performing blank.

Fig. 4 is the structure schematic diagram of the forming tool and the backward extrusion material base of the utility model.

In the figure: 1. sleeving the material cores; 2. upsetting cake blocks; 3. reversely extruding the preforming die; 4. a top rod; 5. an adjusting block; 6. a spring; 7. a nut; 8. reversely extruding the preformed blank; 9. a guide surface; 10. a cavity; 11. reversely extruding the female die; 12. reversely extruding the lower cushion; 13. a reverse extrusion punch; 14. reversely extruding the blank; 15. a neck reduction section.

Detailed Description

The invention will be explained in more detail by the following examples, the purpose of which is to protect all the technical improvements within the scope of the invention.

The conical inner ring bearing forging reverse extrusion tooling comprises a sub-sleeve material core 1 and a pre-forming tooling, wherein the pre-forming tooling comprises an upper heading cake block 2, a reverse extrusion pre-forming die 3 and an ejector rod 4, the upper portion of the reverse extrusion pre-forming die 3 is provided with the upper heading cake block 2, the reverse extrusion pre-forming die 3 is internally provided with a guide cavity, a step cavity, a necking section 15 and a cavity 10 which are connected from top to bottom in sequence, the upper section of the step cavity is thick, the lower section of the step cavity is thin, the ejector rod 4 is step-shaped and is arranged in the step cavity, an adjusting block 5 is arranged between the step surface of the ejector rod 4 and the lower section of the upper section of the step cavity, the lower part of the adjusting block 5 is provided with a spring 6 and is arranged between the lower section of the ejector rod 4 and the lower section of the step cavity, a nut 7 is arranged outside the lower end of the ejector rod 4 in the cavity 10, the sub-sleeve material core 1 is placed in the guide cavity, and the bottom surface of the sub-sleeve material core 1 is contacted with the upper surface of the ejector rod 4.

The conical inner ring bearing forging backward extrusion tooling is characterized in that a guide surface 9 is arranged on the inner wall of a guide cavity, the preformed surface of the sleeve material core 1 is a vertical surface, and the sleeve material core 1 is a backward extrusion preformed material blank 8 after the upper upsetting cake block 2 is pressed downwards, and has the same shape with the guide surface 9.

The diameter of the neck section of the reverse extrusion tooling for forging the conical inner ring bearing is smaller than the diameter of the lower section of the step cavity and the diameter of the cavity 10, and the diameter of the cavity 10 is larger than the diameter of the lower section of the step cavity.

The cone inner ring bearing is forged to be a backward extrusion tool, and the outer diameter of the nut 7 is larger than the diameter of the neck section.

The cone inner ring bearing forge and reversely extrude frock, still include the shaping frock, it includes reversely crowded die 11, reversely crowded lower bolster 12 and reversely crowded drift 13, reversely crowded die 11 hole is unanimous with the external diameter face of reversely crowded preforming blank 8, reversely crowded lower bolster 12 sets up in the lower part of reversely crowded die 11 hole, and contacts with below reversely crowded preforming blank 8, reversely crowded drift 13 is located reversely on crowded preforming blank 8, reversely crowded preforming blank 8 after the pushing down forms reversely crowded blank 14.

Implement the utility model discloses a circular cone inner circle bearing forging anti-extrusion frock, when using, divide set material core 1 to put into anti-extrusion preforming die 3, divide the lower plane of set material core 1 and the upper plane contact of ejector pin 4, there is a guide surface 9 at anti-extrusion preforming die 3 hole design, divide the outside of set material core 1 to be the perpendicular, it is to guarantee that set material core 1 and anti-extrusion preforming die 3 are concentric to set up to divide, spring 6 is cyclic annular, the cover is outside at ejector pin 4 hypomere minor diameter, after dividing set material core 1 to put into anti-extrusion preforming die 3, upper upset cake piece 2 moves down along with the slider of press, upper upset cake piece 2 oppresses set material core 1, divide set material core 1 to oppress ejector pin 4, ejector pin 4 compresses spring 6, form anti-extrusion preforming blank 8; the upper heading cake block 2 moves upwards along with a slide block of a press machine, the ejector rod 4 is ejected by the spring 6, the reversely extruded preformed blank 8 is ejected from the reversely extruded preformed die 3, because the temperature of the blank has errors, the compression amount of the spring 6 is uneven, in order to prevent the overlarge elasticity of the spring 6 from ejecting the ejector rod 4 out of the reversely extruded preformed die 3, the nut 7 is arranged at the lower end of the ejector rod 4 in the cavity 10 at the lower end of the reversely extruded preformed die 3, the outer diameter of the nut 7 is larger than the diameter of the necking section, the ejector rod 4 can be ensured to be in the cavity 10 after the spring 6 is ejected, the step of the ejector rod 4 is provided with the adjusting block 5, when the upper plane of the ejector rod 4 is worn, the height of the ejector rod 4 is reduced, and the adjusting blocks 5 with different heights can be replaced for ensuring the height of the reversely extruded preformed blank 8; because the size and the shape of the outer diameter surface of the back extrusion preformed blank 8 are consistent with the size and the shape of the inner diameter surface of the back extrusion concave die 11, the back extrusion preformed blank 8 and the back extrusion concave die 11 are concentric when being placed in the back extrusion concave die 11, the lower plane of the back extrusion preformed blank 8 is contacted with the back extrusion lower pad 12, the back extrusion punch 13 moves downwards along with the slide block and is combined with the back extrusion concave die 11 and the back extrusion lower pad 12 to extrude the back extrusion preformed blank 8, and a back extrusion blank 14 is formed.

The detailed part of the utility model is the prior art.

The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.

Claims

1. The utility model provides a circular cone inner race bearing forges anti-frock of crowded, includes branch cover material core and preforming frock, characterized by: preforming frock includes the upset cake piece, anti-crowded preforming mould and ejector pin, be equipped with the upset cake piece on the upper portion of anti-crowded preforming mould, anti-crowded preforming mould is inside from last to being equipped with the guide chamber that is connected extremely down in proper order, the step cavity, necking section and cavity, the thick hypomere of step cavity upper segment is thin, the ejector pin is the step form and sets up in the step cavity, be equipped with the adjusting block between the step face of ejector pin and the lower part of step cavity upper segment, lower part at the adjusting block, and be located and be equipped with the spring between the hypomere of ejector pin and step cavity, the lower extreme outside of the ejector pin of setting in the cavity is equipped with the nut, branch cover material core has been placed to the guide intracavity, the bottom surface of branch cover material core contacts with the higher authority of ejector pin.

2. The cone inner ring bearing forging backward extrusion tool of claim 1, characterized in that: the inner wall of the guide cavity is provided with a guide surface, the preformed surface of the sleeve distributing core is a vertical surface, and the sleeve distributing core is a reverse extrusion preformed blank which is consistent with the shape of the guide surface after the upper heading cake block is pressed downwards.

3. The cone inner ring bearing forging backward extrusion tool of claim 1, characterized in that: the diameter of the neck reducing section is smaller than that of the lower section of the step cavity and that of the cavity, and the diameter of the cavity is larger than that of the lower section of the step cavity.

4. The cone inner ring bearing forging backward extrusion tool of claim 1, characterized in that: the outer diameter of the nut is larger than the diameter of the neck section.

5. The cone inner ring bearing forging backward extrusion tool of claim 1, characterized in that: the forming tool comprises a reverse extrusion die, a reverse extrusion lower pad and a reverse extrusion punch, an inner hole of the reverse extrusion die is consistent with the outer diameter surface of a reverse extrusion preformed blank, the reverse extrusion lower pad is arranged at the lower part of the inner hole of the reverse extrusion die and is in contact with the lower surface of the reverse extrusion preformed blank, the reverse extrusion punch is positioned above the reverse extrusion preformed blank, and the reverse extrusion preformed blank after being pressed down forms the reverse extrusion blank.