Double-station upset head material gathering and blank making die

Abstract

The utility model discloses a double-station upset head material gathering blank making die which comprises a lower die plate, an upper die plate parallel to the lower die plate is arranged over the lower die plate, an upsetting lower die and a pre-forging lower die are arranged on the two sides of the central axis of the lower die plate, an upsetting lower die core is arranged in the upsetting lower die, a blank piece is placed in the upsetting lower die core, and a pre-forging lower die core is arranged in the pre-forging lower die. A pre-forging lower die core is arranged in the upper die plate, an upsetting part is placed in the pre-forging lower die core, the two sides of the central axis of the upper die plate are connected with a first upper die base and a second upper die base, an upsetting upper die is arranged below the first upper die base, an upsetting upper die core is arranged in the upsetting upper die, a pre-forging upper die core is arranged below the second upper die base, and a finished product can be obtained after a blank is subjected to upsetting, pre-forging and finish forging. The cost of a cross wedge rolling mill and a cross wedge rolling die is saved, and the problem that a rolled blank is hollow is solved. The closed die forging is adopted, so that materials are saved, the cost is reduced, and a flaw detection link is omitted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of forging, especially relates to a double-station head-up material gathering blank making die. BACKGROUND

[0002] The output shaft part in the vehicle CVT gearbox has the structural characteristics that the rod part is thin and the head part is thick, the conventional forging process is to adopt wedge cross blanking to roll out the rod part, and then to thicken the head part on the screw press to form, but the wedge cross rolling die has high cost, and the die debugging is difficult, and the die cost is high. The wedge cross rolling process has the risk of loose core and shrinkage hole, and the subsequent ultrasonic flaw detection process needs to be set, which increases the labor cost and prolongs the processing cycle, and the labor cost is high. In addition, the process can only be open die forging, and cannot realize closed die forging, so the material consumption is large, the raw material cost is high, the equipment investment cost and the labor cost are increased. The existing public technology CN114558974A is a forging and pressing die for the intermediate gear shaft blank of the gearbox, which can be rolled into a gearbox intermediate gear shaft rolling blank by a wedge cross rolling mill, and forged into a gearbox intermediate gear shaft blank by a press, but there is still room for improvement in the die improvement. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a double-station head-up material gathering blank making die, which can be realized through the following technical scheme: a double-station head-up material gathering blank making die is developed on the original trimming punch, the die is composed of the thickening and pre-forging two stations of process one and the final forging of process two; the double-station die of process one is on a die frame, that is, the double-station head-up material gathering blank making die. The die can extrude the blank by the thickening, pre-forging and final forging steps to obtain the CVT gearbox output shaft part, thereby saving the cost of the wedge cross rolling mill and wedge cross rolling die, avoiding the problem of blank hollowing, adopting closed die forging, saving materials, reducing material cost and eliminating the flaw detection link.

[0004] A double-station head-up material gathering blank making die, which comprises a lower die plate, the lower die plate is fixed on a punch base, there is an upper die plate parallel to the lower die plate above the lower die plate, thickening lower dies and pre-forging lower dies are arranged on both sides of the central axis of the lower die plate, the thickening lower die has a thickening lower die core, a blank is placed in the pre-forging lower die core, the pre-forging lower die has a pre-forging lower die core, and a thickening part is placed in the pre-forging lower die core, the upper die plate is fixed on a punch slide, first and second upper die bases are connected to both sides of the central axis of the upper die plate, the thickening upper die is below the first upper die base, the thickening upper die has a thickening upper die core, the pre-forging upper die is below the second upper die base, the pre-forging upper die has a pre-forging upper die core, the blank can be changed into the thickening part after thickening, the thickening part can be changed into a pre-forging part after pre-forging, the pre-forging part can be placed in a final forging lower die, the final forging lower die is supported by a backing plate below, the final forging lower die has a final forging upper die above, a top rod is in the through hole of the backing plate, and the pre-forging part can become a finished product after final forging.

[0005] In the upsetting process, the blank is placed in the upsetting lower die, the press pedal is stepped on, and the upsetting upper die is pressed down by the press slide to extrude the blank into an upsetting piece. Then, the upsetting piece is placed in the preforming lower die, the pedal is stepped on, and the preforming upper die is pressed down by the press slide to extrude the upsetting piece into a preforming piece. Further, the preforming piece is placed in the final forging lower die of the final forging die, the final forging upper die is installed on the slide block of the screw press, and the final forging lower die, the backing plate and the ejector rod part are combined and installed on the workbench of the screw press. The pedal of the screw press is stepped on, the press slide drives the final forging upper die to start pressing down, and finally the bottom surface is in contact with the top surface of the final forging lower die to extrude the preforming piece to obtain the finished product. After the forging is completed, the press slide is returned upward, and the finished product is finally ejected by the ejector rod.

[0006] The first upper die base is connected with the first upper die pressing ring and the second upper die pressing ring below, and the first upper die pressing ring and the second upper die pressing ring are abutted against the top edge of the upsetting upper die. The first upper die pressing ring and the second upper die pressing ring are connected with the first upper die base, which can fix the position of the upsetting upper die, ensure the centering and positioning of the upsetting upper die in the first upper die base, and ensure the stability of the upsetting upper die during the upsetting work.

[0007] The second upper die base is connected with the third upper die pressing ring and the fourth upper die pressing ring below, and the third upper die pressing ring and the fourth upper die pressing ring are abutted against the top edge of the preforming upper die. The third upper die pressing ring and the fourth upper die pressing ring can fix the position of the preforming upper die, ensure the centering and positioning of the preforming upper die in the second upper die base, and ensure the stability of the preforming upper die during the preforming work.

[0008] The first upper die base is provided with a first plug at the top, a first upper ejection spring is arranged below the first plug, and the upsetting ejector rod is connected below the first upper ejection spring. In the upsetting work, the blank is first placed in the upsetting lower die, the upsetting upper die will press the blank to compress it into an upsetting piece. When the upsetting ejector rod contacts the blank, the first upper ejection spring is compressed under force, and finally pushes the upsetting ejector rod to separate the upsetting piece from the upsetting upper die cavity, completing the forging process of the upsetting piece.

[0009] The second upper die base is provided with a second plug at the top, a second upper ejection spring is arranged below the second plug, and the preforming ejector rod is connected below the second upper ejection spring. In the preforming work, the upsetting piece is placed in the preforming lower die, the preforming upper die will press the upsetting piece to further compress it into a preforming piece. When the preforming ejector rod contacts the upsetting piece, the second upper ejection spring is compressed under force, and finally pushes the preforming ejector rod to separate the preforming piece from the preforming upper die cavity, completing the forging process of the preforming piece.

[0010] The upsetting lower die and the preforming lower die have lower die pressing rings on the side. The lower die pressing rings are pressed on the position of the bottom edge of the upsetting lower die and the preforming lower die, so that the upsetting lower die and the preforming lower die are fixed in the counterbore corresponding to the lower die plate, ensuring the stability of the upsetting lower die and the preforming lower die during the upsetting and preforming work.

[0011] The upsetting upper die peripheral diameter is same as the upsetting lower die peripheral diameter, and the upsetting upper die lower surface and the upsetting lower die upper surface can be completely attached in working. The upsetting piece can be stably formed in the upsetting working.

[0012] The pre-upsetting upper die peripheral diameter is same as the pre-upsetting lower die peripheral diameter, and the pre-upsetting upper die lower surface and the pre-upsetting lower die upper surface can be completely attached in working. The pre-upsetting piece can be stably formed in the pre-upsetting working.

[0013] The advantages of the utility model lie in: only punch and screw press are used in the whole process, wedge cross rolling machine and rolling die are completely saved, equipment cost is greatly saved; closed die forging is adopted in final forging, material cost can be saved, the purpose of reducing manufacturing cost and improving production efficiency is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and other implementation drawings can be obtained according to the provided drawings without paying creative labor for the ordinary skilled in the art.

[0015] Figure 1 It is the upper and lower die separation state schematic view of the upsetting die and the pre-upsetting die of the double-station upsetting head material gathering and blank making die of the utility model.

[0016] Figure 2 It is Figure 1 It is the upper and lower die closed state schematic view of the upsetting die and the pre-upsetting die of the double-station upsetting head material gathering and blank making die of the utility model.

[0017] Figure 3 It is the blank piece to finished product change schematic view of the double-station upsetting head material gathering and blank making die of the utility model.

[0018] Figure 4 It is the final forging die schematic view of the double-station upsetting head material gathering and blank making die of the utility model.

[0019] Explanation of reference numerals: 1 - upper die plate, 2 - lower die plate, 7 - upsetting top rod, 8 - upsetting upper die core, 9 - upsetting upper die, 10 - upsetting lower die, 11 - upsetting lower die core, 12 - preforming top rod, 13 - preforming upper die core, 14 - preforming upper die, 15 - preforming lower die, 16 - preforming lower die core, 17 - lower die pressing ring, 18 - blank piece, 19 - upsetting piece, 20 - preforming piece, 21 - finish-forging upper die, 22 - finish-forging lower die, 23 - backing plate, 24 - top rod, 25 - finished product, 31 - first plug, 32 - second plug, 41 - first upper die base, 42 - second upper die base, 51 - first upper ejection spring, 52 - second upper ejection spring, 61 - first upper die pressing ring, 62 - second upper die pressing ring, 63 - third upper die pressing ring, 64 - fourth upper die pressing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present application clearer and more apparent, the present application will be described in detail below with reference to embodiments. It should be understood that the following description is merely used to describe one or several specific embodiments of the present application and does not strictly limit the scope of the present application.

[0021] Example 1

[0022] Reference is made to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 3 , the accompanying drawings Figure 4As shown, a double-station upsetting and gathering blank making die includes a lower die plate 2 fixed on a punch base, an upper die plate 1 parallel to the lower die plate 2 above the lower die plate 2, an upsetting lower die 10 and a preforming lower die 15 arranged on both sides of the central axis of the lower die plate 2, an upsetting lower die core 11 in the upsetting lower die 10, a blank 18 placed in the preforming lower die core 16, a preforming lower die core 16 in the preforming lower die 15, an upsetting part 19 placed in the preforming lower die core 16, the upper die plate 1 fixed on a punch slider, a first upper die base 41 and a second upper die base 42 connected on both sides of the central axis of the upper die plate 1, an upsetting upper die 9 below the first upper die base 41, an upsetting upper die core 8 in the upsetting upper die 9, a preforming upper die 14 below the second upper die base 42, a preforming upper die core 13 in the preforming upper die 14, the blank 18 changed into the upsetting part 19 through upsetting, the upsetting part 19 changed into a preformed part 20 through preforming, the preformed part 20 placed in a finish-forging lower die 22, the finish-forging lower die 22 supported by a backing plate 23 below, a finish-forging upper die 21 above the finish-forging lower die 22, a top rod 24 in the through hole of the backing plate 23, and the finished product 25 obtained through finish-forging of the preformed part 20. In the upsetting process, the blank 18 is placed in the upsetting lower die 10, the pedal is stepped on, the upsetting upper die 9 is driven by the punch slider to press down and extrude the blank 18 into the upsetting part 19. Then, the upsetting part 19 is placed in the preforming lower die 15, the pedal is stepped on, the preforming upper die 14 is driven by the punch slider to press down and extrude the upsetting part 19 into the preformed part 20. Further, the preformed part 20 is placed in the finish-forging lower die 22 of the finish-forging die, the finish-forging upper die 21 is installed on the slider of the screw press, and the finish-forging lower die 22, the backing plate 23 and the top rod 24 are partially combined and installed on the workbench of the screw press. The pedal of the screw press is stepped on, the pressure slider drives the finish-forging upper die 21 to start pressing down, the bottom surface finally contacts the top surface of the finish-forging lower die 22 to extrude the preformed part 20 to obtain the finished product 25, the press slider is upwardly returned after the forging is completed, and the finished product 25 is finally ejected by the top rod 24.

[0023] The first upper die base 41 is connected with a first upper die pressing ring 61 and a second upper die pressing ring 62 below, and the first upper die pressing ring 61 and the second upper die pressing ring 62 abut against the top edge of the upsetting upper die 9. The first upper die pressing ring 61 and the second upper die pressing ring 62 are connected with the first upper die base 41, can fix the position of the upsetting upper die 9, ensure the upsetting upper die 9 to be centered and positioned in the first upper die base 41, and ensure the stability of the upsetting upper die 9 during the upsetting work.

[0024] The second upper die base 42 is connected with a third upper die pressing ring 63 and a fourth upper die pressing ring 64 below, and the third upper die pressing ring 63 and the fourth upper die pressing ring 64 abut against the top edge of the preforming upper die 14. The third upper die pressing ring 63 and the fourth upper die pressing ring 64 can fix the position of the preforming upper die 14, ensure the preforming upper die 14 to be centered and positioned in the second upper die base 42, and ensure the stability of the preforming upper die 14 during the preforming work.

[0025] The first upper die base 41 is provided with a first plug 31 at the top, and a first upper ejection spring 51 is arranged below the first plug 31, and a upsetting punch 7 is connected below the first upper ejection spring 51. In the upsetting work, the blank 18 is first placed in the upsetting lower die 10, and the upsetting upper die 9 will press the blank 18 to deform it into the upsetting piece 19. When the upsetting punch 7 contacts the blank 18, the first upper ejection spring 51 is compressed under force, and finally pushes the upsetting punch 7 to separate the upsetting piece 19 from the upsetting upper die 9, thus completing the upsetting process.

[0026] The second upper die base 42 is provided with a second plug 32 at the top, and a second upper ejection spring 52 is arranged below the second plug 32, and a preforming punch 12 is connected below the second upper ejection spring 52. In the preforming work, the upsetting piece 19 is placed in the preforming lower die 15, and the preforming upper die 14 will press the upsetting piece 19 to deform it into the preforming piece 20. When the preforming punch 12 contacts the upsetting piece 19, the second upper ejection spring 52 is compressed under force, and finally pushes the preforming punch 12 to separate the preforming piece 20 from the preforming upper die 14, thus completing the preforming process.

[0027] The upsetting lower die 10 and the preforming lower die 15 are provided with a lower die pressing ring 17 on the side. The lower die pressing ring 17 is pressed on the position of the bottom edge of the upsetting lower die 10 and the preforming lower die 15, so that the upsetting lower die 10 and the preforming lower die 15 are fixed in the corresponding counterbores of the lower die plate 2, thus ensuring the stability of the upsetting lower die 10 and the preforming lower die 15 during the upsetting and preforming work.

[0028] The upsetting upper die 9 has the same outer diameter as the upsetting lower die 10, and the lower surface of the upsetting upper die 9 and the upper surface of the upsetting lower die 10 can completely fit during the work, thus ensuring that the upsetting piece 19 can be stably formed during the upsetting work. The preforming upper die 14 has the same outer diameter as the preforming lower die 15, and the lower surface of the preforming upper die 14 and the upper surface of the preforming lower die 15 can completely fit during the work, thus ensuring that the preforming piece 20 can be stably formed during the preforming work.

[0029] The above-mentioned embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the embodiments of the present application in any form. Any person skilled in the art can make some changes or modifications within the scope of the technical means disclosed in the present application, and other equivalent embodiments, but should be considered as the same as the present application.

[0030] The principles and implementation manners of the present application are described by using specific examples in the present text, and the above example descriptions are only used to help understand the method of the present application and its core idea. The above descriptions are only preferred implementation manners of the present application, and it should be noted that, due to the limited nature of the language expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, a number of improvements, refinements or changes can be made without departing from the principles of the present application, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or the direct application of the utility model concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A double station header compacting die comprising a lower die plate (2) above which is a parallel upper die plate (1), characterised in that: The lower die plate (2) has upsetting lower die (10) and preforming lower die (15) on both sides of the axis, the upsetting lower die (10) has upsetting lower die core (11) inside, the upsetting lower die core (11) has blank part (18) inside, the preforming lower die (15) has preforming lower die core (16) inside, the preforming lower die core (16) has upsetting part (19) inside, the upper die plate (1) has first upper die base (41) and second upper die base (42) on both sides of the axis, the first upper die base (41) has upsetting upper die (9) below, the upsetting upper die (9) has upsetting upper die core (8) inside, the second upper die base (42) has preforming upper die (14) below, the preforming upper die (14) has preforming upper die core (13) inside, the blank part (18) can become upsetting part (19) after upsetting, the upsetting part (19) can become preforming part (20) after preforming, the preforming part (20) can be put into finish forging lower die (22), the finish forging lower die (22) is supported by backing plate (23) below, the finish forging lower die (22) has finish forging upper die (21) above, the backing plate (23) has ejector pin (24) in the through hole, the preforming part (20) can get finished product (25) after finish forging.

2. A two station header compacting die according to claim 1 wherein The first upper die base (41) has first upper die pressing ring (61) and second upper die pressing ring (62) below, the first upper die pressing ring (61) and the second upper die pressing ring (62) resist the top edge of the upsetting upper die (9).

3. A two station header compacting die as defined in claim 1 wherein The second upper die base (42) has third upper die pressing ring (63) and fourth upper die pressing ring (64) below, the third upper die pressing ring (63) and the fourth upper die pressing ring (64) resist the top edge of the preforming upper die (14).

4. The double station header compacting die of claim 1 wherein The first upper die base (41) has first plug (31) on the top, the first plug (31) has first upper ejector spring (51) below, the first upper ejector spring (51) has upsetting ejector pin (7) below.

5. The double station header compacting die of claim 1 wherein The second upper die base (42) has second plug (32) on the top, the second plug (32) has second upper ejector spring (52) below, the second upper ejector spring (52) has preforming ejector pin (12) below.

6. A two station header compacting die as defined in claim 1 wherein The upsetting lower die (10) and the preforming lower die (15) have lower die pressing ring (17) on the side.

7. A two station header compacting die as defined in claim 1 wherein The upsetting upper die (9) has the same outer diameter as the upsetting lower die (10), the lower surface of the upsetting upper die (9) and the upper surface of the upsetting lower die (10) can completely adhere during work.

8. A two station header compacting die as defined in claim 1 wherein The preforming upper die (14) has the same outer diameter as the preforming lower die (15), the lower surface of the preforming upper die (14) and the upper surface of the preforming lower die (15) can completely adhere during work.

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