CN211852713U - Truck screw rod nut and die thereof - Google Patents
Truck screw rod nut and die thereof Download PDFInfo
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- CN211852713U CN211852713U CN201922498181.6U CN201922498181U CN211852713U CN 211852713 U CN211852713 U CN 211852713U CN 201922498181 U CN201922498181 U CN 201922498181U CN 211852713 U CN211852713 U CN 211852713U
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- nut
- nut body
- riser
- screw rod
- sand
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Abstract
The utility model discloses a truck screw rod nut and a die thereof, comprising a screw rod nut body and a box sand mold, wherein the bottom of the screw rod nut body is provided with a base, the screw rod nut body is connected with a reinforced lacing wire, a threaded hole is arranged in the screw rod nut body, the box sand mold is provided with a nut groove, a riser sand core is arranged in a communication channel, the top end of the connection channel is fixedly connected with a cross gate, and the middle of the cross gate is fixedly connected with a sprue and a sprue cup; the utility model relates to a five ingates, the dispersion fills the type fast, avoids the product to appear the bad phenomenon of shaping because of the cold shut defect, increases the psammitolite design in the case sand mould, with the design of ingate in the optimum position that is fit for the product, has eliminated inside shrinkage cavity and shrinkage porosity defect, is equipped with the strengthening rib on the lateral wall of screw-nut body.
Description
Technical Field
The utility model relates to an automobile parts technical field specifically is a truck screw nut and mould.
Background
With the vigorous development of the automobile industry, the demand for automobile parts is also sharply increased, so that the demand for the automobile parts is very large, and the lead screw nut for the truck is produced by adopting die casting during production, but because the product belongs to a thin-wall iron casting, the defects of cold shut, deformation, local thermal shrinkage porosity and the like are easy to occur in the production and manufacturing process, so that the lead screw nut cannot be used after the production is finished; in addition, the product has the defects of shrinkage cavity and shrinkage porosity in the product due to the existence of local casting thermal junctions on the product due to structural reasons, and the feed head cannot be fed and eliminated, so that the screw rod nut cannot be used in adaptation to a corresponding screw rod, and the screw rod nut cannot be used due to the problems of shrinkage cavity and shrinkage porosity; the wear resistance of the product is influenced due to the fact that the casting is unstable in hardness or metallographic structure, the casting is divided up and down, and the product size is influenced due to the fact that the casting is prone to being subjected to misshapen phenomenon due to the fact that a mould or modeling equipment is used; the surface quality defects of sticky eyes, fleshiness and the like easily appear on the surface of the casting, and the surface quality of the product is influenced; thus, a truck screw nut and a mold which can prevent shrinkage cavity shrinkage porosity deformation are urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a truck screw nut and mould has the cooling of psammitolite acceleration hot festival department, establishes the enhancement lacing wire, strengthens the structural strength of product, embeds a plurality of ingates, fills the type fast to and composition proportion, advantages such as reinforcing hardness and wear resistance for solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a truck screw nut, includes screw-nut body, base, U type cave mouth, strengthens lacing wire, screw hole and bell jar, a spatial structure who has the baseplane is constituteed to screw-nut body, base, U type cave mouth, strengthens lacing wire, screw hole and bell jar, the screw-nut body includes the base of the outer department of following of round, the four sides central point of base puts the fixed U type cave mouth of having seted up, four equal fixedly connected with in four corners department of screw-nut body strengthen the lacing wire, the middle part of screw-nut body is equipped with the screw hole, the top of screw hole is through connecting portion fixedly connected with U type cave mouth wall, the inside of U type cave mouth wall is equipped with the bell jar, the outside of U type cave mouth wall is equipped with the U type cave mouth fixture block of seting up U type cave mouth.
The screw rod nut body is rectangular in exterior and is provided with a circular hole groove in interior.
The diameter of the conical groove is larger than that of the threaded hole, and the conical groove and the threaded hole penetrate through the interior of the feed screw nut body.
The utility model provides a mould of truck screw rod nut, includes the case sand mould, the case sand mould includes nut groove, screw hole psammitolite, rising head sand core hole, intercommunication way, connecting channel, pouring cup, sprue, cross gate and rising head psammitolite, the equidistance is equipped with twelve nut grooves, both sides in the case sand mould establish the intercommunication way between the nut groove, be equipped with the rising head psammitolite in the intercommunication way, carry out the UNICOM through the connecting channel between the nut groove, the top fixedly connected with cross gate of connecting channel, the middle fixedly connected with sprue of cross gate, the top fixedly connected with pouring cup of sprue, the fixed screw hole psammitolite that is equipped with in centre of nut groove.
The nut grooves are divided into twelve groups and are arranged in three rows and four columns.
And a connecting channel arranged between the nut grooves is connected in the U-shaped opening, and the riser sand core is also clamped in the U-shaped opening.
And riser sand core holes are fixedly formed in the riser sand cores.
The box sand mold is fixedly connected with the lower box sand mold through an upper box sand mold and a lower box sand mold in a clamping mode.
The riser sand core hole forms a pouring riser in casting, and the riser sand core forms an inner sprue in casting.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model controls the metallographic structure of the product by controlling the components of the alloy elements manganese and copper and properly increasing the phosphorus content, thereby ensuring the hardness and the wear resistance of the product; the hardness stability of the product is ensured by enhancing the control of inoculation and cooling time; design 5 flat ingates in the case sand mould, fill the type fast through the dispersion, avoid the product to appear the bad phenomenon of shaping because of the cold shut defect, and through increase the psammitolite design in the case sand mould, and with the design of ingate in the optimum position that is fit for the product, inside shrinkage cavity and shrinkage porosity defect have thoroughly been eliminated, improve the compactness of product material, thereby the wear resistance of product has been ensured, be equipped with the strengthening rib on the lateral wall of screw-nut body, and through cooling process control and deformation school pressure adjustment, the product blank size has been guaranteed, thereby product machining size precision has been ensured.
Drawings
Fig. 1 is a schematic view of a feed screw nut of the present invention;
fig. 2 is a half-sectional view of the feed screw nut of the present invention;
fig. 3 is a cross-sectional view of the feed screw nut of the present invention;
FIG. 4 is a schematic diagram of a sand box of the present invention;
fig. 5 is a schematic view of part a of the present invention.
In the figure: the feed screw nut comprises a feed screw nut body 1, a base 2, a 3U-shaped hole, a 4-reinforcing tie bar, a 5-threaded hole, a 6-connected part, a 7U-shaped hole wall, an 8U-shaped hole fixture block, a 9-box sand mold, a 10-nut groove, a 11-threaded hole sand core, a 12-riser sand core hole, a 13-communicated channel, a 14-connected channel, a 15-sprue cup, a 16-sprue, a 17-cross sprue, a 19-tapered groove and a 20-riser sand core.
Detailed Description
The technical solution in the examples of the present invention will be clearly and completely described below with reference to the accompanying drawings in the examples of the present invention. The described examples are only a part of the examples of the present invention, and not all examples. Based on the examples in the present invention, all other examples obtained by other persons in the field without creative changes belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a truck screw nut comprises a screw nut body 1, a base 2, a U-shaped cave mouth 3, a reinforcing tie bar 4, a threaded hole 5 and a conical groove 19, wherein the screw nut body 1, the base 2, the U-shaped cave mouth 3, the reinforcing tie bar 4, the threaded hole 5 and the conical groove 19 form a three-dimensional structure with a bottom plane, the screw nut body 1 comprises a circle of bases 2 at the outer edge, and the bases 2 at the outer edge can be conveniently taken out in the process of pouring and can be conveniently held in the process of using; the central positions of four sides of the base 2 are fixedly provided with U-shaped cave mouths 3, and the U-shaped cave mouths 3 can facilitate the circulation of casting liquid and the fixed connection of riser sand cores 20 during casting; four reinforcing pull ribs 4 are fixedly connected to four corners of the feed screw nut body 1, and the reinforcing pull ribs 4 at the four corners can prevent the feed screw nut body 1 from deforming when being cooled; the screw-nut body 1 is characterized in that a threaded hole 5 is formed in the middle of the screw-nut body 1, the top end of the threaded hole 5 is fixedly connected with a U-shaped cave mouth wall 7 through a connecting portion 6, a tapered groove 19 is formed in the U-shaped cave mouth wall 7, a U-shaped cave mouth clamping block 8 for arranging a U-shaped cave mouth 3 is arranged on the outer side of the U-shaped cave mouth wall 7, and the screw-nut body 1 can be formed in the pouring process through the shape of the U-shaped cave mouth wall 7.
The screw-nut body 1 is rectangular in exterior, and the screw-nut body 1 is provided with a circular hole groove in interior, the design of the position accords with the shape of the screw-nut body 1 in actual use, and the pouring is convenient.
The diameter of the tapered groove 19 is larger than that of the threaded hole 5, the tapered groove 19 and the threaded hole 5 penetrate through the interior of the lead screw nut body 1, and the size of the tapered groove 19 and the size of the threaded hole 5 are set, so that the tapered groove 19 can be clamped with a lead screw when in use.
A mould of a truck screw rod nut comprises a box sand mould 9, wherein the box sand mould 2 comprises nut grooves 10, threaded hole sand cores 11, riser sand core holes 12, a communication channel 13, a connecting channel 14, a sprue cup 15, a sprue 16, a cross runner 17 and a riser sand core 20, twelve nut grooves 10 are arranged in the box sand mould 2 at equal intervals, and the nut grooves 10 at the positions can be set so as to quickly finish the production of products during pouring; a communication channel 13 is arranged between the nut grooves 10 on the two sides, a riser sand core 20 is arranged in the communication channel 13, the communication channel 13 at the position can enable casting liquid to flow rapidly, an inner pouring port can be formed by setting the riser sand core 20, and the casting liquid can flow towards the two sides conveniently; the nut grooves 10 are communicated through a connecting channel 14, the top end of the connecting channel 14 is fixedly connected with a cross runner 17, the middle of the cross runner 17 is fixedly connected with a straight runner 16, the top of the straight runner 16 is fixedly connected with a pouring cup 15, the pouring cup 15 at the position can be poured with pouring liquid, and the communicating effect of the straight runner 16 and the cross runner 17 is communicated to realize the pouring of the nut grooves 10; the middle of the nut groove 10 is fixedly provided with a threaded hole sand core 11, and the threaded hole sand core 11 at the middle can realize a cooling effect.
The nut grooves 10 are divided into twelve groups and are arranged in three rows and four columns, and the setting of the nut grooves can enable the sand box mold 9 to produce multiple groups of products at the same time.
The connecting channel 14 arranged between the nut grooves 10 is connected in the U-shaped cave opening 3, the riser sand core 20 is also clamped in the U-shaped cave opening 3, riser sand core holes 12 are fixedly formed in the riser sand core 20, and the riser sand core 20 at the position can be set to simultaneously cool the nut grooves 10 at two sides.
The box sand mold 9 is fixedly connected with the lower box sand mold in a clamping mode, the box sand mold 9 at the position is connected with the upper box sand mold in a clamping mode, the box sand mold can be detached and installed conveniently, and the poured product can be taken down conveniently.
The riser sand core hole 12 forms a pouring riser in casting, the riser sand core 20 forms an inner pouring gate in casting, the pouring riser and the inner pouring gate at the position can rapidly enable pouring liquid to be poured into the nut groove 10 from the communicating channel 13, and the situation that the sand box mold 9 is completely filled with the pouring liquid can be judged.
The material requirement of the screw rod nut is QT600-3, the requirements on strength, hardness and wear resistance are very high, and in order to meet the relevant quality requirements of products, the following technical scheme is adopted in the processes of smelting, casting and molding and processing:
(1): optimizing the proportion of smelting scrap steel: 40% of automobile punching scrap, 20% of ship plate material and 40% of scrap returns;
(2): controlling the contents of manganese and copper (Mn content: 0.5-0.65% and Cu content: 0.6-0.7%), ensuring the hardness requirement of the product, properly increasing the phosphorus content (P content: 0.04-0.07%), increasing the phosphorus eutectic structure and improving the wear resistance of the product;
(3): the pouring temperature is well controlled (the initial pouring temperature is set to 1420-;
(4): the inoculation operation is strengthened, and the uniform metallographic structure of the product is ensured by combining the in-ladle inoculation and the stream inoculation, so that the uniform and stable hardness of the product is ensured;
(5): the inner pouring gate is designed to the optimal position suitable for the product through the downward sand core, so that the phenomenon of local thermal nodes in the product due to the fact that the feeding channel is blocked is solved, the defects of shrinkage cavities or shrinkage porosity in the product are eliminated, the density of the product material is improved, and the wear resistance of the product is guaranteed;
(6): controlling the water content of the molding sand (the water content control range is 3.2-3.8%), and avoiding the defect of subcutaneous air holes of the product;
(7): the alpha starch is properly added, so that the performance of the molding sand is improved, the surface quality of the sand mold is improved, the sand sticking on the surface of a product is reduced, and the attractive appearance of the product is ensured;
(8): after the product is poured, the online cooling time is ensured for 2 hours, and the influence on the performances of the product such as hardness and the like caused by the product being off-line in a red hot state is avoided.
(9): the thinner steel wire shot (the diameter is about 1mm) is used as shot blasting material, thereby improving the shot blasting effect, and ensuring the bright and clean and beautiful surface of the product after shot blasting
(10): before the product is delivered, in order to ensure that the properties such as the hardness of the product meet the requirements, 100 percent of hardness is detected and confirmed
The working principle is as follows: when in use, the threaded hole sand core 11 is placed in the nut groove 10 in the lower box sand mold of the box sand mold 9, the riser sand core 20 is placed in the U-shaped hole 3 between the nut grooves 10 at two sides and clamped, the upper box sand mold is stably clamped on the lower box sand mold, then the pouring liquid is poured into the box sand mold 9 through the pouring cup 15, the pouring liquid flows into the cross pouring gate 17 through the straight pouring gate 16 and then flows into the communicating channel 13, and flows into the nut groove 10 through the riser sand core 20 in the communicating channel 13, when the box sand mold 9 is filled with the pouring liquid, the pouring of the pouring liquid is stopped, then, the molded product is prevented from generating internal shrinkage holes and internal shrinkage porosity through natural cooling and cooling of the riser sand core 20 and the threaded hole sand core 11, reinforcing ribs are arranged around the feed screw nut body 1, the deformation of the cooling process of the feed screw nut body 1 can be controlled, after cooling, the upper sand box and the lower sand box of the sand box 9 can be disassembled, and the casting finished product is taken down to be cut and polished into a single feed screw nut body 1.
Although examples of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these examples without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a truck screw nut, includes screw nut body (1), base (2), U type cave mouth (3), strengthens lacing wire (4), screw hole (5) and bell jar (19), its characterized in that: the feed screw nut body (1), the base (2), the U-shaped cave mouth (3), the reinforcing lacing wire (4), the threaded hole (5) and the conical groove (19) form a three-dimensional structure with a bottom plane, the feed screw nut body (1) comprises a circle of base (2) at the outer edge, U-shaped holes (3) are fixedly formed in the center positions of four sides of the base (2), four reinforcing lacing wires (4) are fixedly connected at four corners of the feed screw nut body (1), a threaded hole (5) is arranged in the middle of the feed screw nut body (1), the top end of the threaded hole (5) is fixedly connected with a U-shaped cave mouth wall (7) through a connecting part (6), the inner part of the U-shaped cave mouth wall (7) is provided with a tapered groove (19), and the outer side of the U-shaped cave mouth wall (7) is provided with a U-shaped cave mouth clamping block (8) provided with a U-shaped cave mouth (3).
2. The truck screw nut of claim 1, wherein: the screw rod nut is characterized in that the outer portion of the screw rod nut body (1) is rectangular, and a circular hole groove is formed in the screw rod nut body (1).
3. The truck screw nut of claim 1, wherein: the diameter of the conical groove (19) is larger than that of the threaded hole (5), and the conical groove (19) and the threaded hole (5) penetrate through the interior of the feed screw nut body (1).
4. The utility model provides a mould of truck screw rod nut, includes case sand mould (9), its characterized in that: the box sand mold (9) comprises a nut groove (10), a threaded hole sand core (11), a riser sand core hole (12), a communicating channel (13), a connecting channel (14), a pouring cup (15), a sprue (16), a cross gate (17) and a riser sand core (20), twelve nut grooves (10) are equidistantly arranged in the sand box (9), a communication channel (13) is arranged between the nut grooves (10) on the two sides, riser sand cores (20) are arranged in the communication channel (13), the nut grooves (10) are communicated through a connecting channel (14), the top end of the connecting channel (14) is fixedly connected with a horizontal pouring channel (17), the middle of the horizontal pouring channel (17) is fixedly connected with a straight pouring channel (16), the top of the sprue (16) is fixedly connected with a sprue cup (15), and a threaded hole sand core (11) is fixedly arranged in the middle of the nut groove (10).
5. The die of claim 4, wherein: the nut grooves (10) are divided into twelve groups, and the nut grooves are arranged in three rows and four columns.
6. The die of claim 5, wherein: and a connecting channel (14) arranged between the nut grooves (10) is connected into the U-shaped hole (3), and the riser sand core (20) is also clamped in the U-shaped hole (3).
7. The die of claim 6, wherein: and riser sand core holes (12) are fixedly formed in the riser sand core (20).
8. The die of claim 4, wherein: and the box sand mold (9) is fixedly connected with the lower box sand mold by an upper box sand mold and a lower box sand mold in a clamping manner.
9. The die of claim 4, wherein: the riser sand core hole (12) forms a pouring riser during casting, and the riser sand core (20) forms an inner sprue during casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498181.6U CN211852713U (en) | 2019-12-31 | 2019-12-31 | Truck screw rod nut and die thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498181.6U CN211852713U (en) | 2019-12-31 | 2019-12-31 | Truck screw rod nut and die thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852713U true CN211852713U (en) | 2020-11-03 |
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ID=73209004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922498181.6U Active CN211852713U (en) | 2019-12-31 | 2019-12-31 | Truck screw rod nut and die thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852713U (en) |
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2019
- 2019-12-31 CN CN201922498181.6U patent/CN211852713U/en active Active
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