CN219188363U - Piston forming die of shock absorber - Google Patents

Abstract

The utility model discloses a damper piston forming die, which particularly relates to the technical field of forming dies, and comprises an upper forming die punch, a middle forming die, a lower forming die and a lower forming die, wherein the bottom of the middle forming die is connected with the lower forming die; the forming lower punch comprises an outer punch, an inner core rod and an outer core rod, wherein the inner punch is arranged in the middle of the outer punch, and the inner core rod and the outer core rod are respectively arranged in the middle and at the edge of the inner punch. The utility model uses the connecting bolt to fix the inner core rod and the outer core rod in the inner punch; therefore, a plurality of round holes and flat square holes can be formed at one time, and the length of the inner core rod and the length of the outer core rod used by the structure are shorter, the strength is higher, the service life is greatly prolonged, the number of punches is reduced, and the installation difficulty is reduced.

Description

Piston forming die of shock absorber

Technical Field

The utility model relates to the technical field of forming dies, in particular to a damper piston forming die.

Background

The piston is an important component part in the shock absorber, when the vehicle is subjected to relative motion due to vibration, the piston in the shock absorber moves up and down, and hydraulic oil in one cavity in an oil cavity of the shock absorber flows into the other cavity in the oil cavity from a piston hole; along with the friction between the hole wall and the oil liquid and the internal friction between the oil liquid molecules, damping force is formed on the generated vibration, vibration energy is converted into heat energy and is emitted into the atmosphere, so that the repeated bouncing of the spring is prevented, and better driving smoothness is provided for the vehicle; the powder metallurgy process has good economic advantages and higher stability, and is widely used for manufacturing automobile shock absorber pistons; while the existing damper piston dies generally employ an integral stamping structure.

However, in the practical stamping, the small hole in the piston die is small in size, the phenomena of bending deformation and the like of the stamping tend to occur, and finally the stamping is scrapped or repaired, so that the piston forming die of the shock absorber is provided, the service life of the die is prolonged, the processing efficiency is improved, and the production cost of parts is reduced.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides a damper piston forming mold to solve the above-mentioned problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the piston forming die comprises an upper forming die punch, a middle forming die, a lower forming die and a lower forming die, wherein the bottom of the middle forming die is connected with the lower forming die, the lower forming die is inserted into the middle of the middle forming die and the middle of the lower forming die, and the upper end of the middle forming die is penetrated through by the lower forming die and is connected with the upper forming die;

the forming lower two punches comprise an outer punch, an inner core rod and an outer core rod, wherein the inner punch is arranged in the middle of the outer punch, the inner core rod and the outer core rod are respectively arranged in the middle and the edge of the inner punch, and a base is arranged at the bottom end of the outer punch.

Further, the forming middle die is of a double-layer structure, the outer layer of the forming middle die is a sheath, the inner layer of the forming middle die is a former, and the top of the sheath is provided with an installation threaded hole.

Further, a blowing threaded hole is formed in the side face of the forming upper punch, and an avoidance hole is formed in one end, away from the forming lower punch, of the forming upper punch.

Further, the bottom ends of the outer punch and the inner punch are provided with internal threads, the top end of the base is provided with external threads, and the outer punch is in threaded connection with the base.

Further, a first flat square groove is formed in the side face of the outer punch, and a flat square blade is installed at the top of the outer punch.

Further, a locating pin hole is formed in the edge of the bottom of the base, and a second flat square groove is formed in the side face of the base.

Further, the inner punch is fastened in the outer punch by a connecting bolt and a connecting nut.

The utility model has the technical effects and advantages that:

1. compared with the prior art, the inner punch and the outer punch are arranged, the inner core rod and the outer core rod can be fastened and locked by the connecting bolts, the inner core rod and the outer core rod are fixed in the inner punch, and after the outer core rod is mounted on the inner punch, the inner core rod and the outer core rod are mounted in a matched manner, and the inner core rod and the outer core rod are locked in the outer punch by the connecting nuts; therefore, a plurality of round holes and flat square holes can be formed at one time, and the length of the inner core rod and the length of the outer core rod used by the structure are shorter, the strength is higher, the service life is greatly prolonged, the number of the punches is reduced, and the installation difficulty is reduced.

2. Compared with the prior art, by arranging the inner core rod, when the size of the hole needs to be changed, only the inner core rod needs to be changed, and the inner core rod does not need to be recombined, so that the service life of the die can be prolonged; the small holes are directly formed by using a die, and drilling is not needed, so that the processing efficiency can be improved, and the cost is reduced; the forming upper punch, the forming middle die, the forming lower punch and the forming lower punch adopt a split-type punch structure, so that the service life of the die is prolonged, the production cost is reduced, and the processing quality and the production efficiency of parts are improved.

Drawings

FIG. 1 is a schematic diagram illustrating the overall structure assembly of the present utility model.

FIG. 2 is a schematic diagram showing a sectional structure of a forming die according to the present utility model.

FIG. 3 is a schematic view of a two-punch section structure under forming according to the present utility model.

The reference numerals are: 1. forming an upper die punch; 11. a blowing threaded hole; 12. avoidance holes;

2. forming a middle mold; 21. a sheath; 22. a former; 23. installing a threaded hole;

3. forming a next punch;

4. forming a secondary punch;

41. an outer punch; 411. a first flat square groove; 412. flat square blades;

42. an inner punch; 43. an inner core rod; 44. an outer core rod;

45. a base; 451. positioning pin holes; 452. a second flat square groove;

46. an internal thread; 47. an external thread; 48. a connecting bolt; 49. and (5) connecting a nut.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The forming die for the shock absorber piston comprises a forming upper die punch 1, a forming middle die 2, a forming lower die 3 and a forming lower die 4, wherein the bottom of the forming middle die 2 is connected with the forming lower die 3, the forming lower die 4 is inserted into the middle of the forming middle die 2 and the middle of the forming lower die 3, and the forming lower die 4 penetrates out of the top end of the forming middle die 2 to be connected with the forming upper die 1;

the forming lower punch 4 comprises an outer punch 41, an inner punch 42, an inner core rod 43 and an outer core rod 44, wherein the inner punch 42 is arranged in the middle of the outer punch 41, the inner core rod 43 and the outer core rod 44 are respectively arranged in the middle and at the edge of the inner punch 42, a base 45 is arranged at the bottom end of the outer punch 41, and the inner punch 42 is fastened in the outer punch 41 through a connecting bolt 48 and a connecting nut 49;

the damper piston forming die is mainly applied to the field of powder metallurgy, and is simple in structure and convenient and quick to install.

Wherein, the forming middle die 2 is in clearance fit with the forming upper die 1 and the forming lower die 3; the forming lower punch 4 is assembled by an outer punch 41, an inner punch 42, an inner core rod 43 and an outer core rod 44, and one inner core rod 43 and one or more outer core rods 44 can be selected; the inner punch 42, the inner core rod 43, the outer core rod 44 and the like are fixed on the outer punch 41 through the connecting bolts 48 and the connecting nuts 49, and all parts are tightly matched;

wherein the inner punch 42 of the forming lower punch 4 is fastened and locked with the connecting bolt 48 while the inner core rod 43 is fixed in the inner punch 42; after the outer core rod 44 is mounted on the inner punch 42, it is mounted in cooperation with the outer punch 41, and is locked in the outer punch 41 using the coupling nut 49; the structure reduces the number of the punches and reduces the installation difficulty.

Wherein, the outer punch 41 forms a flat square slot hole, the forming surface of the inner punch 42 is taken (the forming surface is taken to be the forming end surface, the end surface in the height direction), the inner core rod 43 forms a middle hole, and the outer core rod 44 forms a small hole; the outer core rod 44 has the advantages that a plurality of round holes and flat square holes can be formed at one time, the length of the outer core rod 44 is shortened, the service life is prolonged, and when the size of the holes needs to be changed, only the inner core rod 43 needs to be replaced, and the reconstitution is not needed;

in a preferred embodiment, as shown in fig. 1, 2 and 3, the forming middle die 2 has a double-layer structure, the outer layer of the forming middle die 2 is a sheath 21, the inner layer of the forming middle die 2 is a former 22, and the top of the sheath 21 is provided with a mounting threaded hole 23;

wherein, the sheath 21 of the outer layer is softer and has a buffering function, and the shaper 22 of the inner layer is made of hard alloy and has a shaping function so as to prolong the service life thereof; the upper end surface of the sheath 21 is provided with an installation threaded hole 23, and bolts are used during installation, so that the installation is convenient;

in a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 3, a blowing threaded hole 11 is formed in the side surface of the forming upper punch 1, and a avoiding hole 12 is formed in one end, away from the forming lower punch 4, of the forming upper punch 1;

in a preferred embodiment, as shown in fig. 1, 2 and 3, the bottom ends of the outer punch 41 and the inner punch 42 are respectively provided with an internal thread 46, the top end of the base 45 is provided with an external thread 47, and the outer punch 41 is in threaded connection with the base 45;

in a preferred embodiment, as shown in fig. 1, 2 and 3, a first flat square slot 411 is formed on the side surface of the outer punch 41, and a flat square blade 412 is installed on the top of the outer punch 41;

wherein the number of edgewise blades 412 is one or more;

in a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 3, a positioning pin hole 451 is formed at the edge of the bottom of the base 45, and a second flat square groove 452 is formed on the side surface of the base 45;

wherein the positioning pin holes 451 play a positioning role when installed; the second flat square groove 452 is matched with the first flat square groove 411 of the outer punch 41 when the base 45 is assembled.

The working principle of the utility model is as follows: when in use, the former 22 arranged on the inner side of the forming middle die 2 is matched with the outer diameter of the forming upper die 1 and the outer diameter of the forming lower die 3, and after the corresponding height is adjusted, the die is installed in a corresponding press; the inner core rod 43 is fixedly connected with the inner thread 46 of the inner punch 42 through a connecting bolt 48, meanwhile, the outer core rod 44 is matched and installed on the outer side of the inner punch 42, the bottom end of the outer core rod 44 is matched with the end face of the outer punch 41, a connecting nut 49 is connected with the connecting bolt 48, the inner punch 42, the inner core rod 43, the outer core rod 44 and the outer punch 41 are fixed together, finally, the outer punch 41 and the base 45 are connected through the outer thread 47, and the second flat square groove 452 is matched with the first flat square groove 411 for use, so that all components are tightly connected.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims (7)

1. The utility model provides a bumper shock absorber piston forming die, includes shaping upper die punch (1), takes shape well mould (2), takes shape next towards (3) and takes shape two towards (4), its characterized in that: the bottom of the forming middle die (2) is connected with a forming next punch (3), the forming next punch (4) is inserted into the middle of the forming middle die (2) and the middle of the forming next punch (3), and the forming next punch (4) penetrates out of the top end of the forming middle die (2) to be connected with the forming upper punch (1);

the forming lower two-punch (4) comprises an outer punch (41), an inner punch (42), an inner core rod (43) and an outer core rod (44), wherein the inner punch (42) is arranged in the middle of the outer punch (41), the inner core rod (43) and the outer core rod (44) are respectively arranged in the middle and at the edge of the inner punch (42), and a base (45) is arranged at the bottom end of the outer punch (41).

2. The damper piston forming die of claim 1, wherein: the forming middle die (2) is of a double-layer structure, the outer layer of the forming middle die (2) is a sheath (21), the inner layer of the forming middle die (2) is a former (22), and the top of the sheath (21) is provided with an installation threaded hole (23).

3. The damper piston forming die of claim 1, wherein: the side of the forming upper punch (1) is provided with an air blowing threaded hole (11), and one end of the forming upper punch (1) far away from the forming lower punch (4) is provided with an avoidance hole (12).

4. The damper piston forming die of claim 1, wherein: the bottom ends of the outer punch (41) and the inner punch (42) are respectively provided with an internal thread (46), the top end of the base (45) is provided with an external thread (47), and the outer punch (41) is in threaded connection with the base (45).

5. The damper piston forming die of claim 4, wherein: the side of outer punch (41) has seted up first flat square groove (411), flat square blade (412) are installed at the top of outer punch (41).

6. The damper piston forming die of claim 4, wherein: the edge of base (45) bottom has seted up location pinhole (451), second flat square groove (452) have been seted up to the side of base (45).

7. The damper piston forming die of claim 4, wherein: the inner punch (42) is fastened in the outer punch (41) through a connecting bolt (48) and a connecting nut (49).

Images