CN214557075U

CN214557075U - Die tooling for manufacturing titanium alloy lower cross arm

Info

Publication number: CN214557075U
Application number: CN202022136957.2U
Authority: CN
Inventors: 李志杰; 钟军; 陈妍; 孙建月
Original assignee: Shenyang Titanium Equipment Manufacturing Co ltd
Current assignee: Shenyang Titanium Equipment Manufacturing Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-11-02
Anticipated expiration: 2030-09-25

Abstract

The utility model relates to a forge technical field, provide a mould frock for xarm under preparation titanium alloy. The die tool for manufacturing the titanium alloy lower cross arm comprises a pre-forging die set and a finish-forging die set, wherein the pre-forging die set comprises a first pre-forging die and a second pre-forging die which are matched in a buckling mode, the finish-forging die set comprises a first finish-forging die and a second finish-forging die which are matched in a buckling mode, symmetrical pre-forging die grooves are formed in the first pre-forging die and the second pre-forging die, and symmetrical finish-forging die grooves are formed in the first finish-forging die and the second finish-forging die. The utility model discloses a setting is by the preforging mould that the first preforging mould of upper and lower lock adaptation and second preforging mould constitute, realizes the preforging to the titanium alloy blank, and the finish forging mould that the setting is constituted by the first finish forging mould of upper and lower lock adaptation and second finish forging mould realizes the finish forging to the preforging, and then accomplishes the forging preparation of xarm under the titanium alloy, promotes the titanium alloy range of application, improves and forges preparation efficiency.

Description

Die tooling for manufacturing titanium alloy lower cross arm

Technical Field

The utility model relates to a forge technical field, especially relate to a mould frock is used to preparation titanium alloy xarm down.

Background

In the connecting piece of the off-road vehicle, the lower cross arm plays a key bearing role, and is mostly made of steel castings or titanium alloy castings and used after machining. Because the space between the middle parts of the lower cross arm is large (up to 400mm), the normal production process is adopted, the material utilization rate is less than 45 percent, and the titanium alloy has high value and large forming difficulty, and the forming difficulty is concentrated in that the forging temperature is low, and the forging temperature range is small (generally about 100 ℃, generally about 350 ℃ of steel products), so that the application of the titanium alloy is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a preparation mould frock for xarm under titanium alloy to the current limited problem is used in xarm preparation under titanium alloy of solution.

According to the utility model provides a mould frock is used to preparation titanium alloy xarm down, including forging die utensil group and finish forging die utensil group in advance, forging die utensil group includes the first forging die utensil and the second forging die utensil in advance of lock adaptation, finish forging die utensil group includes the first finish forging die utensil and the second finish forging die utensil of lock adaptation, first forging die utensil in advance with the second forging die utensil is equipped with symmetrical forging die utensil groove in advance, first finish forging die utensil with the second finish forging die utensil is equipped with symmetrical finish forging die utensil groove.

According to the utility model discloses preparation mould frock for xarm under titanium alloy, through the blocker that the setting comprises the first blocker of upper and lower lock adaptation and second blocker, realize the blocker to the titanium alloy blank, the finish forging mould that the setting comprises the first finish forging mould of upper and lower lock adaptation and second finish forging mould, realize the finish forging to the blocker, and then accomplish the forging preparation of xarm under the titanium alloy, guarantee the precision of xarm forging size under the titanium alloy, promote the titanium alloy range of application, improve and forge preparation efficiency.

According to the utility model discloses an embodiment, the forging die groove is followed the length direction of forging die group in advance is equipped with two preforging trench that can hold a lower xarm one by one.

According to the utility model discloses an embodiment, it follows to forge the mould groove in advance the length direction of forging mould group in advance includes the middle zone and is located the first side region and the second side region of middle zone both sides, the middle zone is equipped with the segmentation arch, first side region with the regional die cavity degree of depth of second side with the thickness phase-match of xarm corresponding position down, first side region with between the middle zone with the second side region with all be equipped with the preforging step axial trough between the middle zone.

According to the utility model discloses an embodiment, the degree of depth of preforging step axle slot with the high looks adaptation of the step axle of the unilateral of xarm down.

According to the utility model discloses an embodiment, the finish forging mould groove is followed the length direction of forging mould group in advance is equipped with two finish forging trench that can hold a lower xarm one by one.

According to the utility model discloses an embodiment, the finish forging mould groove is followed the die cavity degree of depth at finish forging mould group length direction's both ends and the thickness phase-match that the xarm corresponds the position down, the middle part in finish forging mould groove is equipped with finish forging step shaft groove.

According to the utility model discloses an embodiment, the degree of depth of finish forging step axle groove with the high looks adaptation of the step axle of the unilateral of xarm down.

According to the utility model discloses an embodiment, the both ends of finish forging die groove are equipped with the high platform respectively, the high platform is followed finish forging die group width direction's both sides are equipped with respectively the die cavity.

According to the utility model discloses an embodiment, the height of high platform with the degree of depth looks adaptation that the xarm corresponds the position down.

According to the utility model discloses an embodiment, week side in forging die groove in advance is equipped with preforging deckle edge bridge portion and preforging cabin portion, week side in forging die groove in end is equipped with finish forging deckle edge bridge portion and finish forging cabin portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first pre-forging die of the die tool for manufacturing the titanium alloy lower cross arm according to the embodiment of the present invention;

fig. 2 is a top view of a first pre-forging die of the die tool for manufacturing the lower titanium alloy arm according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first finish forging die of the die tool for manufacturing the lower titanium alloy arm according to the embodiment of the present invention;

fig. 4 is a top view of a first finish forging die of the die tool for manufacturing the lower titanium alloy arm according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a pre-forged part prepared by the die tool for manufacturing the titanium alloy lower cross arm according to the embodiment of the invention;

FIG. 6 is a front view of a pre-forged part prepared by the die tool for manufacturing the titanium alloy lower cross arm according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a lower cross arm prepared by using a die tool for manufacturing a titanium alloy lower cross arm according to an embodiment of the present invention;

fig. 8 is a front view of a lower cross arm prepared by a die tool for manufacturing a titanium alloy lower cross arm according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a titanium alloy raw bar used in the die tool for manufacturing the lower titanium alloy cross arm according to the embodiment of the present invention.

Reference numerals:

100. titanium alloy raw bar stock; 110. a drawing-out area; 120. a fixed zone; 200. pre-forging; 210. A first pre-forged lower cross arm; 220. a slitting area; 230. a step shaft; 240. a second pre-forged lower cross arm; 300. pre-forging the die; 310. cutting the bulge; 320. pre-forging a step shaft groove; 330. pre-forging the positioning groove; 400. finish forging the mould; 410. finish forging a step shaft groove; 420. and (4) high platform.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 9, the embodiment of the utility model provides a preparation mould frock for titanium alloy lower arm, including forging die group and finish forging die group in advance, forging die group includes the first forging die 300 and the second forging die 300 in advance of lock adaptation, finish forging die group includes the first finish forging die 400 and the second finish forging die 400 of lock adaptation, first forging die 300 in advance with the second forging die 300 in advance is equipped with symmetrical forging die groove in advance, first finish forging die 400 with second finish forging die 400 is equipped with symmetrical finish forging die groove. It will be appreciated that the blocker die set is used to blocker the blank and the finish die set is used to finish forge the pre-forging 200. Specifically, the pre-forging die set comprises a first pre-forging die 300 and a second pre-forging die 300 which are matched in an up-and-down buckling mode, the first pre-forging die 300 and the second pre-forging die 300 are provided with symmetrical pre-forging die grooves, that is, the first pre-forging die 300 is buckled on the upper side of the second pre-forging die 300, so that the pre-forging die grooves in the first pre-forging die 300 and the pre-forging die grooves in the second pre-forging die 300 are buckled in an up-and-down symmetrical mode, an integral die groove of a pre-forging titanium alloy lower cross arm is correspondingly formed, and pre-forging of a blank is achieved.

Further, the finish forging die set comprises a first finish forging die 400 and a second finish forging die 400 which are matched in an up-and-down buckling mode, the first finish forging die 400 and the second finish forging die 400 are provided with symmetrical finish forging die grooves, namely, the first finish forging die 400 is buckled on the upper side of the second finish forging die 400, so that the finish forging die grooves in the first finish forging die 400 and the finish forging die grooves in the second finish forging die 400 are buckled in an up-and-down symmetrical mode, the integral die grooves of the finish forging titanium alloy lower cross arm are correspondingly formed, finish forging of the finish forging piece 200 is achieved, and the titanium alloy lower cross arm product is manufactured.

According to the utility model discloses preparation mould frock for xarm under titanium alloy, through setting up the preforging mould 300 that comprises by the first preforging mould 300 of upper and lower lock adaptation and second preforging mould 300, realize the preforging to the titanium alloy blank, set up the finish forging mould 400 that first finish forging mould 400 and second finish forging mould 400 of lock adaptation constitute from top to bottom, realize the finish forging to preforging piece 200, and then accomplish the forging preparation of xarm under the titanium alloy, guarantee the precision of xarm forging size under the titanium alloy, promote the titanium alloy range of application, the efficiency of forging is improved.

According to an embodiment of the utility model, the preforging die groove is equipped with the preforging trench that can hold two lower xarm along the length direction of preforging die group. It will be appreciated that the blocker grooves are disposed along the length of the blocker set, as viewed from the left and right as shown in fig. 1 and 2. The preforging die groove comprises two preforging groove positions which are integrally formed, and each preforging groove position can contain a lower cross arm. That is to say, the pre-forging piece 200, which is manufactured by pre-forging the blank by the pre-forging die set, comprises two pre-forging lower cross arms, so that the pre-forging efficiency is improved, the use amount of the blank is saved, and the utilization rate of the blank is improved.

According to the utility model discloses an embodiment, it follows to forge the mould groove in advance the length direction of forging mould group in advance includes the middle zone and is located the first side region and the second side region of middle zone both sides, the middle zone is equipped with segmentation arch 310, the first side region with the die cavity degree of depth of second side region with the thickness phase-match of xarm corresponding position down, the first side region with between the middle zone with the second side region with all be equipped with preforging step axial trough 320 between the middle zone. It will be appreciated that the blocker grooves include a central region along the length of the blocker group and first and second side regions on either side of the central region, i.e. the blocker grooves include a central region separating the two blocker grooves and blocker grooves on either side of the central region.

Specifically, the middle region is provided with a splitting protrusion 310, the protrusion separates two pre-forging slots, namely a first side region and a second side region, the pre-forging piece 200 is forged and pressed into a splitting region 220 in the pre-forging process, so that splitting of the pre-forging piece 200 is realized, and the independent first pre-forging lower cross arm 210 and the independent second pre-forging lower cross arm 240 are formed.

Further, a cavity is arranged at one end of the pre-forging slot far away from the splitting protrusion 310, the depth of the cavity is matched with the thickness of the corresponding position of the lower cross arm, and a pre-forging step shaft groove 320 is arranged at one end of the pre-forging slot near the splitting protrusion 310 and used for forging and pressing the titanium alloy blank to form the step shaft 230. The number of the preforging stepped shaft grooves 320 is the same as the number of the stepped shafts 230 on the lower cross arm.

According to an embodiment of the present invention, the depth of the pre-forged stepped shaft groove 320 is adapted to the height of the stepped shaft 230 of one side of the lower cross arm. It can be understood that the depth of the preforging stepped shaft groove 320 is matched with the height of the stepped shaft 230 on one side of the cross arm, so as to forge and form the stepped shaft 230 on one side of the titanium alloy blank.

According to the utility model discloses an embodiment, the finish forging mould groove is followed the length direction of forging mould group in advance is equipped with two finish forging trench that can hold a lower xarm one by one. It will be appreciated that the finish die grooves are disposed along the length of the finish die set, as viewed from the left to right in fig. 3 and 4. The finish forging die slot includes two finish forging slot locations integrally formed to receive the first and second pre-forged lower

cross arms

210 and 240, respectively. That is, the finish forging die set simultaneously performs finish forging on the first and second pre-forged lower

cross arms

210 and 240 to obtain two lower cross arm finished products, so that the finish forging efficiency and the productivity are improved.

According to the utility model discloses an embodiment, finish forging die groove is followed the die cavity degree of depth at finish forging die group length direction's both ends and the thickness phase-match that the lower xarm corresponds the position, the middle part in finish forging die groove is equipped with finish forging step shaft groove 410. It can be understood that the finish forging slot positions are arranged left and right along the length direction of the finish forging die set. And the deviating ends of the two finish forging groove positions are respectively provided with a cavity, the depth of the cavity is matched with the thickness of the corresponding position of the lower cross arm, and finish forging stamping of the corresponding positions of the first pre-forged lower cross arm 210 and the second pre-forged lower cross arm 240 is realized. The close ends of the two finish forging slots are respectively provided with a finish forging stepped shaft slot 410 for forging and pressing the first and second pre-forged lower

cross arms

210 and 240 to form the stepped shaft 230. The number of finish forging stepped shaft grooves 410 is the same as the number of stepped shafts 230 on the lower cross arm.

According to an embodiment of the present invention, the depth of the finish forged stepped shaft groove 410 is adapted to the height of the stepped shaft 230 of one side of the lower cross arm. It can be understood that the depth of the finish forging stepped shaft groove 410 is adapted to the height of the stepped shaft 230 on one side of the lower cross arm, so as to realize the forging and forming of the stepped shaft 230 on one side of the first and second pre-forging lower

cross arms

210 and 240.

According to the utility model discloses an embodiment, the both ends of finish forging die groove are equipped with the high platform respectively, the high platform is followed finish forging die group width direction's both sides are equipped with respectively the die cavity. It can be understood that the left end and the right end of the finish forging die groove are respectively provided with the high platform, the front side and the rear side of the high platform, namely the width direction of the finish forging die group are respectively provided with the die cavities, and the high platforms can effectively increase the metal flowing tendency during molding, are beneficial to punching during finish forging and improve the finish forging efficiency.

According to the utility model discloses an embodiment, the height of high platform with the degree of depth looks adaptation that the xarm corresponds the position down. It can be understood that the height of the high platform is matched with the depth of the corresponding position of the lower cross arm, and the quality of a finish forging product is guaranteed.

According to the utility model discloses an embodiment, week side in forging die groove in advance is equipped with preforging deckle edge bridge portion and preforging cabin portion, week side in forging die groove in end is equipped with finish forging deckle edge bridge portion and finish forging cabin portion. It can be understood that, in order to ensure the process quality of the pre-forging and the finish forging, a pre-forging rough edge bridge part and a pre-forging cabin part are arranged on the peripheral side of the pre-forging die groove to prevent the titanium alloy of the pre-forging die groove from overflowing, and a finish forging rough edge bridge part and a finish forging cabin part are arranged on the peripheral side of the finish forging die groove to prevent the titanium alloy of the finish forging die groove from overflowing and simultaneously limit the size.

The embodiment of the utility model provides a concrete forging method of mould frock for xarm under the preparation titanium alloy is as follows:

measuring the thickness of the titanium alloy raw bar material 100, calculating heating first set time according to 0.6-0.8 min/mm, placing the titanium alloy raw bar material 100 in a heating furnace, wherein the set temperature in the heating furnace is-60-20 ℃ below the phase change point, and heating the titanium alloy raw bar material.

It is worth noting that the titanium alloy raw bar stock 100 comprises a drawing area 110 in the middle and fixing areas 120 at two ends, so that the usage amount of materials is reduced, the utilization rate of the materials is improved, meanwhile, the die assembly is convenient, and the forging efficiency is improved.

The heated titanium alloy raw bar stock 100 is drawn, that is, the two ends of the titanium alloy raw bar stock 100, namely the fixing areas 120, are not deformed, and the drawing area 110 is drawn so that the overall length is matched with the mounting groove phase of the pre-forging die 300, thereby manufacturing a blank. It can be understood that, with the use of the drawn blank, the size of the fixing area 120 is unchanged, and only the drawing area 110 is operated without any complicated size, which facilitates the realization of the automated operation.

The blank is polished and cleaned, the defects on the surface of the blank are cleaned, the quality of the freely forged blank is guaranteed, and the quality fineness of a lower cross arm product is improved.

And (3) placing the polished and cleaned blank in a heating furnace, wherein the set temperature in the heating furnace is-60 ℃ to-20 ℃ below the phase change point, measuring the thickness of the blank, and calculating the second set heating time according to 0.6min/mm to 0.8 min/mm.

And placing the heated blank in a preforging die 300, and preforging to obtain a preforging piece 200. The fixing area 120 is disposed in the preforging positioning groove 330, the preform is preforged to form the stepped shaft 230 under the action of the preforging stepped shaft groove 320, and the slitting area 220 is formed in the middle of the preform under the action of the slitting protrusions 310. It is worth noting that the pre-forged piece 200 comprises an integral body of a first pre-forged lower cross arm 210 and a second pre-forged lower cross arm 240, and a cutting area 220 is formed between the first pre-forged lower cross arm 210 and the second pre-forged lower cross arm 240 through pre-forging. That is to say, the blank is preforged to obtain two first preforged lower cross arms 210 and two second preforged lower cross arms 240 with the same structure, and the slitting area 220 between the first preforged lower cross arm 210 and the second preforged lower cross arm 240 can effectively separate the first preforged lower cross arm 210 from the second preforged lower cross arm 240, which is convenient for the slitting process in the later period.

And polishing and cleaning the prepared pre-forging piece 200, and cleaning surface defects generated in the pre-forging process, so that the processing fineness of the pre-forging piece 200 is improved. And cutting along the cutting area 220 of the pre-forged piece 200, separating the first pre-forged lower cross arm 210 from the second pre-forged lower cross arm 240, and polishing and cleaning the cut ends of the first pre-forged lower cross arm 210 and the second pre-forged cross arm 240 respectively. It should be noted that the first pre-forged lower cross arm 210 and the second pre-forged lower cross arm 240 are two parts with the same structure, that is, a titanium alloy raw bar stock 100 is used for processing, so that two pre-forged piece 200 lower cross arms are simultaneously prepared, the material cost is effectively reduced, the material utilization rate is improved, and the forging efficiency is improved.

The first pre-forged lower cross arm 210 and the second pre-forged lower cross arm 240 are placed in a heating furnace, the set temperature in the heating furnace is-60 ℃ to-20 ℃ below the phase transition point, the thickness of the first pre-forged lower cross arm 210 or the second pre-forged lower cross arm 240 is measured, and the heating time is calculated according to 0.6min/mm to 0.8 min/mm.

And (3) taking out the heated first pre-forged lower cross arm 210 and the heated second pre-forged lower cross arm 240, and correspondingly placing the first pre-forged lower cross arm 210 and the second pre-forged lower cross arm 240 in a finish forging die 400, namely, the step shaft 230 on the right side of the first pre-forged lower cross arm 210 corresponds to the finish-forged step shaft groove 410 on the left side of the finish forging die 400, the step shaft 230 on the left side of the second pre-forged lower cross arm 240 corresponds to the finish-forged step shaft groove 410 on the right side of the finish forging die 400, the right end of the second pre-forged cross arm 240 corresponds to the high table 420 on the right side of the finish forging die 400, finishing forging, polishing and cleaning the finish-forged parts to obtain two lower cross arms, ensuring the product quality, and thus finishing the production of the titanium alloy lower cross arm.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.

Claims

1. The die tool for manufacturing the titanium alloy lower cross arm is characterized by comprising a pre-forging die set and a finish-forging die set, wherein the pre-forging die set comprises a first pre-forging die and a second pre-forging die which are matched in a buckling manner, the finish-forging die set comprises a first finish-forging die and a second finish-forging die which are matched in a buckling manner, the first pre-forging die and the second pre-forging die are provided with symmetrical pre-forging die grooves, and the first finish-forging die and the second finish-forging die are provided with symmetrical finish-forging die grooves; the pre-forging die groove is provided with two pre-forging slot positions capable of accommodating a lower cross arm one by one along the length direction of the pre-forging die group; the pre-forging die groove comprises a middle area, a first side area and a second side area, wherein the first side area and the second side area are located on two sides of the middle area along the length direction of the pre-forging die group, a splitting bulge is arranged in the middle area, the depth of cavities of the first side area and the second side area is matched with the thickness of the corresponding position of the lower cross arm, and pre-forging step shaft grooves are formed between the first side area and the middle area and between the second side area and the middle area.

2. The die tooling for manufacturing the titanium alloy lower cross arm according to claim 1, wherein the depth of the preforging stepped shaft groove is adapted to the height of the stepped shaft on one side of the lower cross arm.

3. The die tooling for manufacturing the titanium alloy lower cross arm according to claim 1, wherein the finish forging die groove is provided with two finish forging slot positions capable of accommodating one lower cross arm one by one along the length direction of the pre-forging die set.

4. The die tooling for manufacturing the titanium alloy lower cross arm according to claim 3, wherein the cavity depths of the two ends of the finish forging die groove along the length direction of the finish forging die set are matched with the thickness of the corresponding position of the lower cross arm, and the middle part of the finish forging die groove is provided with a finish forging step shaft groove.

5. The die tooling for manufacturing the titanium alloy lower cross arm according to claim 4, wherein the depth of the finish forging stepped shaft groove is matched with the height of a stepped shaft on one side of the lower cross arm.

6. The die tooling for manufacturing the titanium alloy lower cross arm according to claim 4, wherein the two ends of the finish forging die groove are respectively provided with a high platform, and the two sides of the high platform along the width direction of the finish forging die set are respectively provided with the die cavities.

7. The die tooling for manufacturing the titanium alloy lower cross arm as claimed in claim 6, wherein the height of the plateau is adapted to the depth of the corresponding position of the lower cross arm.

8. The die tooling for manufacturing the titanium alloy lower cross arm according to any one of claims 1 to 7, wherein a preforging burr bridge and a preforging cabin are provided on the peripheral side of the preforging die groove, and a finish forging burr bridge and a finish forging cabin are provided on the peripheral side of the finish forging die groove.