CN206981531U

CN206981531U - A kind of trimming punch

Info

Publication number: CN206981531U
Application number: CN201720832816.XU
Authority: CN
Inventors: 孙龙学
Original assignee: Ningbo Tri-Diamond Industry Co Ltd
Current assignee: Ningbo Tri-Diamond Industry Co Ltd
Priority date: 2017-07-11
Filing date: 2017-07-11
Publication date: 2018-02-09
Anticipated expiration: 2027-07-11

Abstract

A kind of trimming punch, bottom is connection ring, top is that plum blossom divides valve, connection ring divides valve to be connected by linkage section with plum blossom, plum blossom, which is divided between valve, processes cutting groove, and the bottom of the cutting groove machining stress at connection ring eliminates hole, plum blossom divide valve be from top to bottom divided into profiled section, changeover portion, spacing section, plum blossom surrounds interior expansion core rod hole between dividing valve, and interior expansion core rod hole is divided into the taper hole on top and the through hole of bottom；Drift is fitted into the endoporus of part to be processed, expansion core rod down moves in punch press driving, plum blossom is extruded by taper while interior expansion core rod moves in interior expansion core rod hole and divides valve, the endoporus of part to be processed is by after corresponding extrusion forming, expansion core rod exits in punch press drive, and plum blossom divides valve refresh memory to be disengaged after deforming from the endoporus of part；Drift instead of six petal designs of original segmentation using six overall petal designs, and in actual use, the demoulding is more prone to, and finished product rate is high, meanwhile, drift is hardly damaged, and is adapted to batch production.

Description

A kind of trimming punch

Technical field

It the utility model is related to stamping area, more particularly to a kind of trimming punch.

Background technology

Finishing shaping is that part obtains one of variously-shaped important means of inwall shrinkage pool, when finishing shapes, is had often The de- not artificial situation of the demoulding, occur killing interior expansion core handful phenomenon；After finishing shaping, the phase mutual deviation of 6 raceway grooves does not often reach client yet Requirement to Product Precision；Also, the trimming punch life-span is very low, converted products 3000 or so will deform, and cause chi It is very little overproof, batch production can not be ensured.

A kind of trimming punch that the utility model refers to is six overall petal designs, successfully overcomes problem above.

Utility model content

Weak point present in regarding to the issue above, the utility model provide a kind of trimming punch.

To achieve the above object, the utility model provides a kind of trimming punch, including：

Connection ring, the connection ring is an annulus and is located at bottom, and the top of the connection ring is processed into plum blossom and divides valve, institute State plum blossom and divide between valve and be divided into etc. six pieces of shape by cutting groove；

The plum blossom divide valve be divided into from top to bottom profiled section, changeover portion, spacing section, described spacing section passes through linkage section and institute State connection ring connection；

The plum blossom surrounds interior expansion core rod hole between dividing valve, and the interior expansion core rod hole is divided into the taper hole on top and leading to for bottom Hole.

As further improvement of the utility model, the bottom of the cutting groove disappears close to machining stress at the connection ring Except hole, to prevent stress concentration.

As further improvement of the utility model, the profile of the profiled section is consistent with the shape of workpiece endoporus, institute The thickness for stating profiled section is more than the thickness of the linkage section, the overall deformation of trimming punch is occurred in the profiled section.

As further improvement of the utility model, width tapers into the cutting groove from top to bottom, the cutting groove Tapered into outward along horizontal direction from interior at the profiled section.

The beneficial effects of the utility model are：

1st, forming punch upper end is that plum blossom divides valve, and lower end is the design of connection ring；Linkage section is elongated, what it opened and shunk Elastic quantitative change is big, elasticity and toughness is all become splendid, and demoulding difficulty is eliminated.

2nd, because plum blossom divides valve to be that five-shaft high-speed milling processes at one time, valve is divided still to connect plum blossom by the connection ring of lower end For an entirety, found through actual use, quality stability is greatly improved.

3rd, the die life of reducing formation drift is largely increased, and meets the requirement of batch production.

Brief description of the drawings

Fig. 1 is a kind of trimming punch front view of the utility model；

Fig. 2 is a kind of trimming punch top view of the utility model.

In figure：1st, connection ring；2nd, interior expansion core rod hole；21st, straight hole；22nd, taper hole；3rd, cutting groove；31st, stress elimination hole；4、 Plum blossom divides valve；41st, spacing ring；42nd, changeover portion；43rd, profiled section；44th, linkage section；5th, shaping area is extended.

Embodiment

As shown in Figure 1 and Figure 2, a kind of trimming punch described in the utility model embodiment, including：Connection ring 1 is an annulus And it is located at bottom, the top of connection ring 1 is processed into plum blossom and divides valve 4, and plum blossom is divided between valve 4 shape such as is divided into by cutting groove 3 Six pieces；The bottom of cutting groove 3 eliminates hole 31 close to machining stress at connection ring 1, to prevent stress concentration；Plum blossom divide valve 4 from On be down divided into profiled section 43, changeover portion 42, spacing section 41, width tapers into cutting groove 3 from top to bottom, cutting groove 3 into Tapered into outward along horizontal direction from interior at type section 43；The profile of profiled section 43 is consistent with the shape of workpiece endoporus, into The thickness of type section 43 is more than the thickness of linkage section 44, the overall deformation of trimming punch is occurred in profiled section 43, spacing section 41 logical Linkage section 44 is crossed to be connected with connection ring 1；Plum blossom surrounds interior expansion core rod hole 2 between dividing valve 4, and the cone for top is divided in interior expansion core rod hole 2 Hole 22 and the through hole 21 of bottom.

Forming punch upper end is that plum blossom divides valve, and lower end is the design of connection ring；Linkage section is elongated, its bullet for opening and shrinking Property quantitative change it is big, make elasticity and toughness all become splendid, the demoulding difficulty be eliminated；Because plum blossom divides valve to be that five-shaft high-speed milling once adds Work is completed, and divides valve to be still connected as an entirety plum blossom by the connection ring of lower end, is found through actual use, and quality stability obtains To greatly improve；The die life of reducing formation drift is largely increased, and meets the requirement of batch production.

When specifically used, the utility model is understood for convenience, is described below with reference to accompanying drawing；

Drift is put into the endoporus of parts to be processed, profiled section enters endoporus, and spacing section stays on the outside of endoporus, punched tape Expansion core rod moves in interior expansion core rod hole in dynamic, and through hole plays guide effect, when interior expansion core rod is reached at taper hole, due to taper hole Aperture taper into, plum blossom divides the profiled section of valve to be squeezed and expanded toward outside, and the thickness of linkage section is less than profiled section, company The inner hole structure that less outside expansion occurs for section and profiled section molds needs in the endoporus of parts to be processed is connect, shape is as schemed Extension shaping area in 1, after the completion of shaping, expansion core rod exits in punch press drive, and linkage section restores to the original state after memory deformation occurs, I.e. forming cavity is deviate from after closing up to middle part by the endoporus of parts to be processed；In existing knowledge structure, plum blossom divides valve to be segmentation Six independent monomers, when finishing shapes, there is the de- not artificial situation of the demoulding often, occur killing interior expansion core handful phenomenon；Finishing shapes Afterwards, the phase mutual deviation of 6 raceway grooves does not often reach requirement of the client to Product Precision yet；Also, the trimming punch life-span is very low, processing production Product 3000 or so will deform, and cause dimension overproof, can not ensure batch production；In new construction, plum blossom divides valve and company Six integral petal designs of annular are connect, forming punch upper end is that plum blossom divides valve, and lower end is the design of connection ring；Linkage section becomes Long, the elastic quantitative change that it opens and shunk is big, elasticity and toughness is all become splendid, and demoulding difficulty is eliminated；Because of plum blossom point Valve is that five-shaft high-speed milling processes at one time, and divides valve to be still connected as an entirety plum blossom by the connection ring of lower end, through reality Using discovery, quality stability is greatly improved；The die life of reducing formation drift is largely increased, and meets batch The requirement of production.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims

A kind of 1. trimming punch, it is characterised in that including：

Connection ring (1), the connection ring (1) are an annulus and are located at bottom, and plum blossom point is processed on the top of the connection ring (1) Valve (4), the plum blossom is divided between valve (4) is divided into etc. six pieces of shape by cutting groove (3)；

The plum blossom divides valve (4) to be divided into profiled section (43), changeover portion (42), spacing section (41) from top to bottom, described spacing section (41) it is connected by linkage section (44) with the connection ring (1)；

The plum blossom surrounds interior expansion core rod hole (2) between dividing valve (4), and the interior expansion core rod hole (2) is divided into the taper hole (22) on top And the through hole (21) of bottom.
A kind of 2. trimming punch according to claim 1, it is characterised in that：The bottom of the cutting groove (3) is described in Connection ring (1) place machining stress eliminates hole (31), to prevent stress concentration.
A kind of 3. trimming punch according to claim 1, it is characterised in that：The profile and workpiece of the profiled section (43) The shape of endoporus is consistent, and the thickness of the profiled section (43) is more than the thickness of the linkage section (44), makes the entirety of trimming punch Deformation occurs in the profiled section (43).
A kind of 4. trimming punch according to claim 1, it is characterised in that：The cutting groove (3) from top to bottom width by Gradual change is small, and the cutting groove (3) tapers into outward at the profiled section (43) place along horizontal direction from interior.