CN205236803U - Steel wheel spoke excircle alignment mould - Google Patents

Abstract

A steel wheel spoke outer circle adjustment mold, including: upper and lower mold bases, upper mold core pads, and upper mold cores; a boss is arranged in the center of the lower mold base, and a central guide column is installed in the center of the boss, and its outer side is symmetrical Four installation through holes and movable ejector rods are provided; the lower mold core pad is set on the upper end surface of the boss, against the movable ejector rod; the lower mold core has a circumferentially protruding step on the upper part of the outer wall, and a central positioning pin is set on the upper end surface The movable ejector ring is set outside the lower mold core, and its upper end is against the lower mold core step, and the lower part is provided with a circumferentially protruding step; the lower mold ring seat is sleeved on the outside of the lower mold frame boss; the lower mold ring, Set on the outer side of the upper end surface of the lower mold ring seat; the lower mold ring insert sleeve is set on the inner side of the lower mold ring, located on the inner side of the upper end surface of the lower mold ring seat, and the upper part of the inner wall is circumferentially protruding. The inner wall of the lower mold ring inserting sleeve of the lower mold ring forms a conical surface with a large upper part and a smaller lower part. The position corresponding to the outer circle gap of the spoke workpiece on the conical surface is a protrusion, and the raised surface is a conical surface with the same taper.

Description

A steel wheel spoke outer circle correction mold

technical field

The utility model relates to production and processing equipment for auto parts, in particular to a steel wheel spoke outer circle correction mold.

Background technique

The wheel is an important part of the vehicle, which bears the vertical load, lateral force, driving (braking) torque and various stresses generated during the driving process of the vehicle. Therefore, there are high requirements for the design and manufacture of wheels. In addition to the selection of wheel materials and the design of wheel structures, the manufacturing process of wheels is the most critical factor to ensure the performance of wheels. With the popularization and application of high-strength steel materials in wheel spoke products, the phenomenon of rebound and wrinkling of wheel spokes in the process of stretching and forming processes is becoming more and more serious, which has a negative impact on the appearance and performance of wheel products. , especially the springback of the outer circle of the spoke will form the stress concentration of the rim body at the end surface of the outer circle of the spoke after the press fit of the spoke and the rim, resulting in a significant reduction in the radial fatigue life of the wheel.

Utility model content

The purpose of this utility model is to provide a steel wheel spoke outer circle adjustment mold, which can improve the rebound and warping phenomenon of the outer circle of the spoke, improve the perpendicularity between the outer circle of the spoke and the mounting surface, and improve the radial direction of the wheel. The fatigue life ensures the safety of the vehicle.

In order to achieve the above object, the technical scheme of the utility model is:

A mold for correcting the outer circle of steel wheel spokes, comprising: upper and lower mold bases, connected by guide posts and guide sleeves located on one side; upper mold core pads, fixed and installed in the center of the upper mold base by screws The upper mold core is fixed and installed under the upper mold core cushion block by screws; it is characterized in that a boss is arranged in the center of the lower mold frame, a center guide post is installed in the center of the boss, and the protrusion on the outside of the center guide post Four installation through holes are evenly and symmetrically opened on the table, and the movable ejector rod connected with the hydraulic cushion of the machine tool is arranged in the installation through hole; It is set on the upper end surface of the boss, against the four movable ejector rods; the lower mold core is set on the lower mold core pad, and the upper part of the outer wall is convexly provided with steps; the center of the upper end surface of the lower mold core is set Locating pin; movable ejector ring, which is sleeved outside the lower mold core, the upper end of the movable ejector ring is against the step of the lower mold core, and the lower part of the movable ejector ring is convexly provided with steps; the lower part of the movable ejector ring is installed with Nitrogen cylinder fixed on the lower mold frame; the lower mold ring seat is sleeved on the outside of the boss of the lower mold base and connected to the lower mold base by screws; the lower mold ring is sleeved on the upper end surface of the lower mold ring seat The outer side is connected to the lower mold ring seat by screws; the lower mold ring insert is arranged on the inner side of the lower mold ring, and is located on the inner side of the upper end surface of the lower mold ring seat; The limit step matched with the step of the movable ejector ring, the inner wall of the lower mold ring insert above the limit step is made into a conical surface with a large upper part and a smaller lower part, and the position of the conical surface corresponding to the outer circular notch of the spoke workpiece is A convex, the convex surface is a conical surface with the same taper.

The hydraulic cushion of the machine tool pushes out the lower mold core pad and the lower mold core through four movable ejector rods, and the spoke workpiece is placed on the lower mold core through the center positioning pin. When the mold is closed, the upper mold core presses the spoke workpiece on the lower mold core Go up and continue down until the outer diameter end surface of the spoke contacts the conical surface of the inner diameter of the lower mold ring insert, and the outer diameter end surface of the spoke is deformed by the radial thrust of the conical inclined surface, and the outer circle adjustment of the outer diameter of the spoke is completed.

The utility model improves the perpendicularity between the outer circle of the wheel spoke and the mounting surface by adopting the above-mentioned technical scheme, and improves the radial fatigue life of the wheel.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a cross-sectional view of the structure of the lower mold ring insert in the embodiment of the present invention.

detailed description

Referring to Fig. 1 and Fig. 2, a kind of steel wheel spoke excircle correction mold of the present utility model comprises:

The upper and lower mold bases 1 and 2 are connected through the guide post 3 on one side and the guide sleeve;

The upper mold core pad 4 is fixedly installed in the inner center of the upper mold frame 1 by screws;

The upper mold core 5 is fixed and installed under the upper mold core pad 4 by screws;

A boss 21 is arranged in the center of the lower mold frame 2, and a center guide post 6 is installed in the center of the boss 21. The boss 21 on the outside of the center guide post 6 is evenly and symmetrically provided with four installation through holes 22, and the installation through holes 22 are provided with The movable ejector rod 7 connected with the hydraulic pad of the machine tool;

The lower mold core pad 8 is provided with a through hole 81 that can be sleeved on the central guide column 6 in the center, and the lower mold core pad 8 is arranged on the upper end surface of the boss 21 and leans against the four movable ejector rods 7;

The lower mold core 9 is arranged on the lower mold core cushion block 8, and a step 91 is protruded on the upper part of the outer wall; the center of the upper end surface of the lower mold core 9 is provided with a central positioning pin 10;

The movable ejector ring 11 is sleeved outside the lower mold core 9, the upper end of the movable ejector ring 11 abuts against the steps 91 of the lower mold core 9, and the lower part of the movable ejector ring 11 protrudes circumferentially with steps 111; the movable ejector ring The nitrogen cylinder 12 fixed on the lower mold base 2 is installed under the 11;

The lower mold ring seat 13 is sleeved on the outside of the boss 21 of the lower mold base 2, and is connected to the lower mold base 2 by screws;

The lower mold ring 14 is sleeved on the outer side of the upper end surface of the lower mold ring seat 13, and connected to the lower mold ring seat 13 by screws;

The lower mold ring insert 15 is arranged on the inner side of the lower mold ring 14 and is located on the inner side of the upper end surface of the lower mold ring seat 13; The limit step 151 matched with 111, the inner wall 152 of the lower mold ring insert 15 above the limit step 151 is made into a conical surface with a large upper part and a smaller lower part, and the conical surface 152 corresponds to the position of the outer circular notch of the spoke workpiece 100 It is a protrusion 153, and the surface of the protrusion 153 is a conical surface with the same taper.

When the utility model is implemented, the machine tool is opened, the lower hydraulic cushion of the machine tool is ejected, and the lower mold core cushion block and the lower mold core are ejected through the movable ejector rod, and the movable ejector ring is pressed up and down under the action of the nitrogen cylinder. Mandrel, the spoke workpiece 100 is placed on the lower mandrel by the centering pin. The slider of the machine tool goes down, the mold starts to close the mold, the upper mold core descends and presses the spoke workpiece on the lower mold core, the machine tool slider continues to descend, and the working pressure of the machine tool passes through the upper mold core, the spoke workpiece, the lower mold core, and the lower mold core pad , The movable ejector rod transmits and compresses the hydraulic pad of the bed, and the hydraulic pad of the machine tool starts to retreat, and the movable ejector ring moves down with the lower mold core to compress the nitrogen cylinder; The conical surface is in contact, and the outer diameter end surface of the spoke is deformed by the radial thrust of the conical inclined surface, and the machine tool slide block continues to move downward and the upper and lower molds are closed to complete the outer circle adjustment of the outer diameter of the spoke. The slider of the machine tool starts to move upward, the upper mold core releases the compression of the spoke workpiece, and the machine tool hydraulic cushion starts to eject, and the spoke workpiece is ejected by the movable ejector rod, the lower mold core pad, and the lower mold core, and the movable The ejector ring moves up along with the lower die core under the action of the nitrogen cylinder, the movable ejector ring always sticks to the lower die core, the machine tool slider continues to move upward, the machine tool hydraulic pad moves upward to eject stroke A, and the movable ejector ring continues to follow the lower die The core goes up together until the step at the lower part of the outer diameter of the movable ejector ring is in contact with the step at the upper end of the inner wall of the lower mold ring sleeve. The upward movement of the movable ejector ring is limited by the lower mold ring sleeve, and the spoke workpiece breaks away from the lower mold ring sleeve. The inner diameter of the conical surface; the slide block of the machine tool continues to move upward, the hydraulic cushion continues to push up and down the mold core, the spoke workpiece follows the lower mold core and continues to move upward, the movable ejector ring is restricted by the lower mold ring insert and cannot continue to move upward, the spoke workpiece and the movable There is a relative displacement between the ejector rings, the inner diameter of the outer circle of the spoke workpiece is separated from the outer wall of the upper part of the movable ejector ring, and the spoke workpiece is completely unloaded, and one working cycle is completed.

Referring to Fig. 2, the lower mold ring insert 15 is arranged inside the lower mold ring 14, and is located on the inner side of the upper end surface of the lower mold ring seat 13; The limit step 151 matched with the step 111 of the ejector ring 11, the inner wall 152 of the lower mold ring insert 15 above the limit step 151 is made into a conical surface with a large upper part and a smaller lower part, and the conical surface corresponds to the outer surface of the spoke workpiece 100. The position of the circular notch is a protrusion 153, and the surface of the protrusion 153 is a conical surface with the same taper.

When the machine tool slider descends until the outer diameter end surface of the spoke workpiece 100 contacts the conical surface of the inner diameter of the lower die ring insert 15, the outer circular gap of the spoke workpiece 100 and the conical surface of the corresponding notch of the lower die ring insert 15 are also in synchronous contact, ensuring that the spokes When the outer circle of the workpiece is adjusted, the force is uniform and the roundness of the outer circle of the spokes is uniform.

Claims (1)

1. a steel wheel spoke cylindrical alignment mould, comprising:

Upper and lower mould bases, connects by the guide pillars and bushes that is positioned at a side;

Upper mold core cushion block, is fixedly installed in center in described top mold frame by screw;

Upper mold core, is fixedly installed under described upper mold core cushion block by screw; It is characterized in that,

In described lower mold holder, a boss is established at center, and a center guide pillar, central guiding are installed by boss central authoritiesThe boss in post outside is offered symmetrically four through hole is installed, and installs in through hole and establishes and machine tool hydraulicThe movable ejector beam that pad is connected;

Lower mold core cushion block, central authorities establish the through hole that can be sheathed on center guide pillar, and lower mold core cushion block arrangesIn described boss upper surface, against four movable ejector beams;

Lower mold core, is arranged on described lower mold core cushion block, and its outer wall top is circumferentially convexly equipped with step;Centralized positioning pin is established at center, lower mold core upper surface;

Movable liftout ring, is sheathed on outside described lower mold core, and movable liftout ring upper end is against lower mold coreUnder step, movable liftout ring bottom is circumferentially convexly equipped with step; Movable liftout ring below is provided with fixingNitrogen cylinder on lower mold holder;

Counterdie ring seat, is sheathed on described lower mold holder boss outside, and is connected by screw in counterdieFrame;

Lower modular ring, is sheathed on outside, described counterdie ring seat upper surface, is connected by screw in counterdieRing seat;

Lower modular ring edge cover, is arranged at described lower modular ring inner side, is positioned at described counterdie ring seat upper surfaceInner side, outside; Lower modular ring edge cover madial wall top is circumferentially convexly equipped with and coordinates with movable liftout ring stepLimited step, the lower modular ring edge cover inwall of this limited step top is made a up big and down small circleThe conical surface, and on this taper seat, the position of corresponding spoke excircle of workpiece breach is a projection, projectionSurface is the taper seat of identical tapering.