CN217370274U - Novel forming die is used in production of auto steering ware adjustment body - Google Patents

Abstract

The utility model discloses a novel forming die for producing an automobile steering gear adjusting body, which comprises a forming female die and a forming next punch, wherein the upper end of the forming female die and the lower end of the forming next punch are respectively nested with a forming first punch and a forming second punch in a sliding way, the upper surface of the forming next punch is contacted with the lower surface of the forming female die, a forming cavity is arranged on the upper surface of the forming next punch, the bottom edge of the forming cavity is in a fillet structure, the upper end surface of the forming first punch and the upper end surface of the forming second punch are mutually extruded in the forming cavity to form an adjusting body, buffer grooves are arranged on the lower surface of the forming female die and the upper surface of the forming next punch, and a buffer mechanism is arranged between the buffer grooves, the utility model has the advantages that the end surface of the adjusting body and the transitional part of the circumference are directly formed in the die of the forming next punch, the fillet end surface of the forming next punch is prevented from cracking and being damaged in the pressing process, the die is internally provided with a buffer mechanism, and the adjusting body has the advantages of stable forming size, long service life and the like.

Description

Novel forming die is used in auto steering ware adjustment body production

Technical Field

The utility model relates to a steering gear adjustment body stamping die technical field specifically is a novel forming die is used in the production of steering gear adjustment body.

Background

The clearance adjusting mechanism of the automobile rack and pinion steering gear mainly comprises an adjusting body, a spiral spring, an adjusting screw plug and other parts, wherein the upper end surface and the circumferential transition position of the adjusting body are mostly chamfers, when a vehicle runs for a long distance in an early time, the upper end surface and the circumferential transition position of the adjusting body are easy to collide with an aluminum shell when running in a steering gear shell hole, and when the lubrication in the shell adjusting body hole is poor, the inner wall is easy to block, so that the clamping stagnation phenomenon of the adjusting body is overcome, the chamfers at the transition positions of the upper end surface and the circumferential surface of the existing adjusting body are changed into fillets, the interference between the upper end surface and the inner wall of the shell when the adjusting body does torsional motion is avoided, the existing adjusting body is formed by mutually extrusion molding of a first punch in a molding female die and a next punch and a second punch, the chamfers of the adjusting body are formed by extrusion molding of an outer circumferential chamfer end on the next punch, if directly change the fillet into with the next round chamfer end of dashing of shaping, there is the round chamfer end that dashes next in the shaping because stress concentration produces and takes place to burst and damage at the in-process of suppression, and mould life is short, transfers whole not have buffer gear to cushion the mould at the in-process of punching press, adjusts the unstable scheduling problem of body stamping forming size.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome current defect, a novel automobile steering device adjustment body is forming die for production is provided, transfer the position that whole terminal surface and circumference pass through direct forming in the mould of the next dashing of shaping, avoid the next in-process fillet terminal surface production stress concentration of dashing at the punching press of shaping, the fillet terminal surface that prevents the next dashing of shaping takes place to crack and damage at the in-process of suppression, be equipped with buffer gear in the mould, adjustment body shaping size is stable, adjustment body stamping forming is efficient, mould long service life, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel forming die for producing an automobile steering device adjusting body comprises a forming female die and a forming lower punch which are arranged in a fixed female die, wherein the forming female die is positioned at the upper end of the forming lower punch, the upper end of the forming female die and the lower end of the forming lower punch are respectively nested with the forming upper punch and the forming lower punch in a sliding manner, the forming upper punch and the forming lower punch are both T-shaped cylinders, the upper surface of the forming lower punch is in contact with the lower surface of the forming female die, a forming cavity is formed in the central position of the forming lower punch upper surface, the edge of the bottom end of the forming cavity is of a fillet structure, the tail end of the forming upper punch penetrates through the forming female die and then extends to the upper end inside the forming cavity, the top end of the forming lower punch penetrates through the forming lower punch and then extends to the lower end inside the forming cavity, and the forming upper end face and the forming lower punch are mutually extruded in the forming cavity to form an adjusting body, the lower surface of the forming female die and the upper surface of the forming die which is punched next are opposite to each other along the circumferential direction, at least two buffer grooves are formed, and a buffer mechanism is arranged between the forming female die and the corresponding buffer groove which is punched next.

Further, the buffer mechanism comprises a fixed column, the fixed column is fixed in a buffer groove of the next punch, a sliding groove is formed in the fixed column, a buffer column is nested in the sliding groove in a sliding manner, the buffer column is of an inverted T-shaped column structure, the top end of the buffer column penetrates through the upper surface of the fixed column, a first spiral spring is arranged between the bottom end inside the fixed column and the bottom surface of the buffer column, a second spiral spring is nested on the periphery of the fixed column, the bottom end of the second spiral spring is fixedly connected with the bottom surface of the buffer groove of the next punch, the top end of the second spiral spring is fixedly connected with a lower annular pressure plate, a fixing bolt which is inverted upwards is connected with the buffer groove in the female die in a threaded manner, an upper annular pressure plate and a belleville spring set are sequentially nested from bottom to top on the fixing bolt, a abdicating groove which is matched with the lower annular pressure plate is formed in the position of the fixing bolt, and the impact convex ring is positioned right above the buffer column.

Furthermore, the periphery that the dashpot that dashes next in the shaping is located coil spring two is fixedly connected with the spacing post of hollow structure, lower annular pressure plate slides and nests in spacing post, and the internal diameter of spacing post and the external diameter looks adaptation of lower annular pressure plate, the upper surface bonding of lower annular pressure plate has blotter one.

Furthermore, the bottom end of the buffer column is of a square structure, the structure of the fixed column inner sliding groove is matched with the structure of the square bottom end of the buffer column, and the upper end of the buffer column is of a cylindrical structure.

Furthermore, a concave spring pad is bonded at the tail end of the fixing bolt, and a convex spring pad matched with the concave spring pad is arranged at the top end of the buffer column.

Furthermore, the contact surface between the forming female die and the next forming punch is a conical surface, and cushion pads II are bonded on the conical surfaces of the forming female die and the next forming punch.

Compared with the prior art, the beneficial effects of the utility model are that: the novel forming die for producing the automobile steering device adjusting body ensures that the end face of the adjusting body and the part of circumferential transition are directly formed in the die for forming the next punch through the fillet structure at the edge of the bottom end in the forming cavity, avoids stress concentration on the fillet end face in the punching process of the next punch, prevents the fillet end face of the next punch from cracking and being damaged in the pressing process, and has high efficiency of punch forming of the adjusting body and stable forming size; the impact wear between the forming female die and the forming next punch is reduced through the buffer mechanism, the buffer effect is good, the service life of the die is prolonged, the product can be rapidly demoulded through the reaction force of the spiral spring I, the spiral spring II and the disc spring, and the integral forming efficiency of the product is improved; through the forming female die and the forming next conical surface contact surface structure, the contact area between the forming female die and the forming next punch can be increased, the stress concentration generated during punching is reduced, the conical contact structures of the forming female die and the forming next punch improve die centering, and the form and position tolerance of the key fit size of the adjusting body part is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a conventional transfer molding apparatus;

FIG. 2 is a schematic view of a prior art molded next-fillet end;

FIG. 3 is a schematic structural view illustrating a prior art method for forming a fillet end by using a next-stroke fillet end;

FIG. 4 is a schematic structural view of the present invention;

FIG. 5 is a schematic view of the next punch structure for molding the present invention;

FIG. 6 is a schematic view of the buffering mechanism of the present invention;

fig. 7 is a sectional view of the buffering mechanism of the present invention;

FIG. 8 is a schematic view of the structure of the buffer post of the present invention;

fig. 9 is the schematic view of the structure of the adjustment body of the fillet end face of the present invention.

In the figure: 1 forming female die, 2 forming upper punch, 3 forming lower punch, 4 forming lower punch, 5 adjusting body, 6 stamping female die, 8 buffer mechanism, 801 fixed column, 802 buffer column, 803 spiral spring I, 804 spiral spring II, 805 lower annular pressure plate, 806 buffer pad I, 807 limit column, 808 fixed bolt, 809 butterfly spring group, 810 upper annular pressure plate and 9 buffer pad II.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example one

Referring to fig. 1-9, the present invention provides a technical solution: a novel forming die for producing an automobile steering gear adjusting body comprises a forming female die 1 and a forming next punch 3 which are arranged in a fixed female die 6, wherein the forming female die 1 is positioned at the upper end of the forming next punch 3, the upper end of the forming female die 1 and the lower end of the forming next punch 3 are respectively nested with the forming first punch 2 and the forming second punch 4 in a sliding manner, the forming first punch 2 and the forming second punch 4 are both T-shaped cylinders, the upper surface of the forming next punch 3 is in contact with the lower surface of the forming female die 1, a forming cavity is formed in the central position of the upper surface of the forming next punch 3, the bottom edge of the forming cavity is of a round angle structure, the tail end of the forming first punch 2 extends to the upper end inside the forming cavity after penetrating through the forming female die 1, the top end of the forming second punch 4 extends to the lower end inside the forming cavity after penetrating through the forming next punch 3, and the lower end surface of the forming first punch 2 and the upper end surface of the forming second punch 4 are extruded mutually to form an adjusting body 5 in the forming cavity, the lower surface of the forming female die 1 and the upper surface of the next punch 3 are oppositely provided with at least two buffer slots along the circumferential direction, a buffer mechanism 8 is arranged between the forming female die 1 and the corresponding buffer slot on the next punch 3, the first punch 2 descends to drive the forming female die 1 to move downwards during forming, the second punch 4 ascends during forming, the lower end surface of the first punch 2 and the upper end surface of the second punch 4 extrude with each other in a forming cavity to form an adjusting body 5, the inner bottom edge of the forming cavity is a fillet structure to ensure that the end surface of the adjusting body 5 and the transitional part of the circumference are directly formed in a die of the next punch 3 during forming, stress concentration of the fillet end surface of the next punch 3 during forming is avoided, the fillet end surface of the next punch 3 during forming is prevented from cracking and being damaged during pressing, the punch forming efficiency of the adjusting body 5 is high, and the forming size is stable, the impact force between the female forming die 1 and the next punch 3 can be relieved by the buffer mechanism 5.

Further, the buffer mechanism 8 includes a fixed column 801, the fixed column 801 is fixed in a buffer slot for forming the next punch 3, a sliding slot is formed in the fixed column 801, a buffer column 802 is nested in the sliding slot in a sliding manner, the buffer column 802 is an inverted "T" type column structure, the top end of the buffer column 802 penetrates through the upper surface of the fixed column 801, a first coil spring 803 is arranged between the bottom end inside the fixed column 801 and the bottom surface of the buffer column 802, a second coil spring 804 is nested on the periphery of the fixed column 801, the bottom end of the second coil spring 804 is fixedly connected with the bottom surface of the buffer slot for forming the next punch 3, the top end of the second coil spring 804 is fixedly connected with a lower annular pressure plate 805, an inverted upward fixing bolt 808 is connected to the internal thread of the buffer slot on the forming female die 1, an upper annular pressure plate 810 and a butterfly spring group 809 are nested in sequence from top to bottom on the fixing bolt 808, the lower annular pressure plate 805 is provided with a yielding groove matched with the lower annular pressure plate at the position of the impact convex ring, the impact convex ring is positioned right above the buffer column 802, the fixing bolt 808 presses the buffer column 802 after the forming female die 1 descends, the buffer column 802 is buffered through the first spiral spring 803, the upper annular pressure plate 810 presses the lower annular pressure plate 805, the lower annular pressure plate 810 is buffered through the second spiral spring 804, the upward force generated by the disc spring group 809 on the upper annular pressure plate 810 plays a role in reverse buffering, the impact force between the forming female die 1 and the forming next punch 3 can be well buffered through the buffer mechanism 8, the collision abrasion between the forming female die 1 and the forming next punch 3 is reduced, the service life of the die is prolonged, and the product can be rapidly demolded through the reaction force of the first spiral spring 803 and the second spiral spring 804, the integral forming efficiency of the product is improved.

Furthermore, a limit column 807 with a hollow structure is fixedly connected to the periphery of the second spiral spring in the buffer groove for forming the next punch 3, the lower annular pressure plate 805 is slidably nested in the limit column 807, the inner diameter of the limit column 807 is matched with the outer diameter of the lower annular pressure plate 805, a first buffer pad 806 is bonded to the upper surface of the lower annular pressure plate 805, a limit guide effect is achieved on the lifting of the lower annular pressure plate 805 through the limit plate 807, and the stable operation of the buffer mechanism 8 is guaranteed.

Furthermore, the bottom end of the buffer column 802 is of a square structure, the structure of the inner chute of the fixed column 1 is matched with the structure of the square bottom end of the buffer column, the upper end of the buffer column 802 is of a cylindrical structure, and the axial movement of the second spiral spring 804 is limited while the stable axial movement of the buffer column 802 is guaranteed through the special structure of the bottom end of the buffer column 802 and the chute.

Furthermore, the tail end of the fixing bolt 808 is bonded with a concave spring pad, and the top end of the buffering column 802 is provided with a convex spring pad matched with the concave spring pad.

Furthermore, the contact surfaces between the female forming die 1 and the next punch 3 are conical surfaces, cushion pads II 9 are bonded on the conical surfaces of the female forming die 1 and the next punch 3, and through the contact surface structures of the female forming die and the next punch 3, the contact area between the female forming die and the next punch can be enlarged, the stress concentration generated during punching is reduced, the conical contact structures of the female forming die and the next punch improve die alignment, and the form and position tolerance of the key fit size of the part of the adjusting body is reduced; the second buffer pad 9 can improve the sealing performance of the forming cavity after being stressed and compressed to deform, a certain pressure maintaining effect is achieved, and the forming effect of the adjusting body 5 is good.

When in use: the forming upper punch 2 descends to drive the forming female die 1 to move downwards, the forming lower punch 4 ascends at the same time, the lower end face of the forming upper punch 2 and the upper end face of the forming lower punch 4 are mutually extruded in the forming cavity to form an adjusting body 5, the inner bottom end edge of the forming cavity is of a round angle structure to ensure that the end face of the adjusting body 5 and the circumferential transition part are directly formed in a die for forming the next punch 3, in the punching process, after the forming female die 1 descends, a fixing bolt 808 presses a buffer column 802, the buffer column 802 descends in a fixing column 801, a spiral spring 803 plays a buffer role for the buffer column 802, an upper annular pressure plate 810 presses a lower annular pressure plate 805, the lower annular pressure plate 805 descends along a limiting column 807, a spiral spring two 804 plays a buffer role for the lower annular pressure plate 810, and a belleville spring group 809 plays a reverse buffer role for an upward force generated by the upper annular pressure plate 810, the impact force between the forming female die 1 and the next forming punch 3 can be well buffered through the buffer mechanism 8, the collision abrasion between the forming female die 1 and the next forming punch 3 is reduced, and after the punching is finished, the forming female die 1 and the previous forming punch 2 are pushed to rapidly rise through the reaction force of the first spiral spring 803, the second spiral spring 804 and the belleville spring group 809, so that the product is rapidly demolded.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a novel forming die is used in production of auto steering ware adjustment body, dashes with the shaping next including setting up the shaping bed die in fixed bed die, and the shaping bed die is located the shaping next upper end that dashes, and slides respectively in the upper end of shaping bed die and the shaping next lower extreme nestification has the shaping to go up one and dash and two dashes under the shaping, and one dashes and two dashes and be "T" type cylinder, its characterized in that under the shaping: the upper surface that dashes under the shaping contacts with the lower surface of shaping bed die, and the shaping is put at the central point that dashes the upper surface down and has been seted up into the molding chamber, and becomes the molding chamber bottom edge and be the fillet structure, one dashes the end and extends to the inside upper end of molding chamber after running through the shaping bed die, two dash the top under the shaping and run through the shaping and extend to the inside lower extreme of molding chamber after dashing down, one dashes under the shaping terminal surface and two towards the shaping up end and extrude each other in the molding chamber and transfer wholly, one dashes under shaping bed die lower surface and the shaping upper surface and is being no less than two dashes the dashing groove along the relative offering of circumferencial direction, and one dashes under shaping bed die and the shaping and is equipped with buffer gear between the corresponding dashing groove.

2. The forming die for producing the novel automobile steering device adjusting body according to claim 1, characterized in that: the buffer mechanism comprises a fixed column, the fixed column is fixed in a buffer groove of the next punch, a sliding groove is formed in the fixed column, a buffer column is nested in the sliding groove in a sliding mode, the buffer column is of an inverted T-shaped column structure, the top end of the buffer column penetrates through the upper surface of the fixed column, a first spiral spring is arranged between the bottom end inside the fixed column and the bottom surface of the buffer column, a second spiral spring is nested on the periphery of the fixed column, the bottom end of the second spiral spring is fixedly connected with the bottom surface of the buffer groove of the next punch, the top end of the second spiral spring is fixedly connected with a lower annular pressure plate, a fixing bolt with an inverted upward shape is connected in the buffer groove on the female die in a threaded mode, an upper annular pressure plate and a butterfly spring group are sequentially nested on the fixing bolt from bottom to top, a yielding groove matched with the lower annular pressure plate is formed in the position of the fixing bolt, and the impact convex ring is positioned right above the buffer column.

3. The forming die for producing the novel automobile steering device adjusting body according to claim 2, characterized in that: the forming next-punching buffer groove is internally fixedly connected with a limiting column with a hollow structure at the periphery of the second spiral spring, the lower annular pressure plate is slidably nested in the limiting column, the inner diameter of the limiting column is matched with the outer diameter of the lower annular pressure plate, and the first buffer pad is bonded on the upper surface of the lower annular pressure plate.

4. The forming die for producing the novel automobile steering device adjusting body according to claim 2, characterized in that: the structure of the fixed column inner sliding groove is matched with the structure of the square bottom end of the buffer column, and the upper end of the buffer column is of a cylindrical structure.

5. The forming die for producing the novel automobile steering device adjusting body according to claim 2, characterized in that: the tail end of the fixing bolt is bonded with a concave spring pad, and the top end of the buffering column is provided with a convex spring pad matched with the concave spring pad.

6. The forming die for producing the novel automobile steering device adjusting body according to claim 1, characterized in that: and the contact surface between the forming female die and the next forming punch is a conical surface, and cushion pads II are bonded on the conical surfaces of the forming female die and the next forming punch.

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