CN207746291U - A kind of mold for carrying out punching press hole flanging - Google Patents

Abstract

The utility model provides a die for stamping and turning holes, which comprises an upper die main body and a lower die main body, a processing punch is fixedly connected to the upper die main body, and a processing punch is fixedly connected to the lower die main body. The flanging die with the heads oppositely arranged, the bottom of the flanging die is provided with a positioning hole for blanking, and the processing punch includes the first punch for turning the hole sequentially connected from top to bottom and the second punch used for punching, the inner diameter of the entrance of the positioning hole is equal to the diameter of the first punch. The die for punching and turning the hole can directly cut off the waste material attached to the mouth of the flange while completing the turning of the workpiece, optimize the turning process, effectively simplify the actual operation process of the turning process, and improve the The production quality of the product and the efficiency of punching and turning holes can be improved, and the labor intensity of the staff can be reduced.

Description

A mold for stamping and turning holes

technical field

The utility model relates to the technical field of metal stamping die processing, in particular to a die for punching and turning holes.

Background technique

Hole turning is a stamping method that uses a mold to turn the edge of the hole on the plate into a vertical edge. It is a kind of flanging in the forming die. It belongs to the plastic deformation process in the basic process of stamping. It is mainly used to make parts that are equipped with other parts. Part, or in order to improve the rigidity of the part, and add a specific shape. This method can be used to process three-dimensional parts with relatively complex shapes, good rigidity and reasonable spatial shape, and it can also be used as a means of controlling cracking or wrinkling when large sheet metal parts are formed. In the prior art, when a stamping die is used to turn a sheet metal part, the waste generated during the punching process tends to adhere near the mouth of the turn, forming ear-shaped defects. After the product is put into use, on the one hand, these waste materials will squeeze the parts or accessories that are in contact with it, affecting the aesthetics of the product or damaging the product; on the other hand, it may also fall off randomly under vibration or shaking conditions, causing safety accidents ; Or it may stick to the mold, reduce the precision of the mold, and affect the smooth development of subsequent operations. At present, in production, special cutting molds are generally used to cut off waste materials, or manual cutting and polishing are used to complete the final product, which is labor-intensive, complicated, and unstable in quality.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a die for stamping and turning holes. The die for punching and turning holes can finish turning the workpiece while turning the workpiece. The waste is directly cut off, the hole turning process is optimized, the actual operation process of the hole turning process is effectively simplified, the production quality of the product and the punching and turning process efficiency are improved, and the labor intensity of the staff is reduced.

Based on this, the utility model proposes a die for punching and turning holes, which is characterized in that it includes an upper die main body and a lower die main body, and a processing punch is fixedly connected to the upper die main body, and the lower die main body It includes a flanging die arranged opposite to the processing punch, the bottom of the flanging die is provided with a positioning hole for blanking, and the processing punch includes sequentially connected from top to bottom for turning A first punch for the hole and a second punch for punching, the inner diameter at the entrance of the positioning hole is equal to the diameter of the first punch.

Optionally, a step for positioning the flanging material is formed between the bottom of the flanging die and the positioning hole.

Optionally, the width of the step is equal to the thickness of the flanging formed in the flanging die.

Further, the diameter of the first punch is larger than the diameter of the second punch.

Optionally, a circular arc surface transition connection is used between the first punch and the second punch.

Optionally, the positioning holes are straight holes, tapered holes or stepped holes.

Optionally, the positioning hole is a tapered hole, and the angle range of the taper angle θ of the tapered hole satisfies 1°≤θ≤5°.

Further, the lower mold body includes a lower mold base, the hole turning die is fixedly connected to the lower mold base, and the lower mold base is provided with at least one pair of supports.

Optionally, the support member is an ejector pin, and the ejector pin is telescopically connected to the lower mold base.

Optionally, the upper die body includes an upper die base and an upper platen that is movably connected to the upper die base through an elastic member, the processing punch is fixedly connected to the upper die base, and the processing punch It is vertically pierced on the upper pressing plate.

Implementation of the mold provided by the utility model for punching and turning holes has the following beneficial effects:

The mold for punching and turning holes of the present invention includes an upper mold main body and a lower mold main body, the upper mold main body is fixedly connected with a processing punch, and the lower mold main body includes a turning punch arranged opposite to the processing punch. A side die, the bottom of the flanging die is provided with a positioning hole for blanking, and the processing punch includes a first punch for turning a hole and a first punch for punching that are sequentially connected from top to bottom. The second punch, the inner diameter of the entrance of the positioning hole is equal to the diameter of the first punch. The processing punch on the main body of the upper die is facing the flanging die, and can punch and flang the workpiece to be processed on the flanging die. The processing punch includes sequentially connected from top to bottom. The first punch and the second punch, when the main body of the upper die and the main body of the lower die are clamped, the second punch can pass through the surface of the workpiece to be processed and enter the flanging die to form a punch on the workpiece to be processed. At this time, the waste material adheres to the surrounding of the processing hole. When the main body of the upper mold and the main body of the lower mold continue to close the mold, the first punch gradually enters the flanging die downwards. At this time, the material around the processing hole is Under the impact of the first punch, it gradually bends into the flanging die and undergoes plastic deformation, thereby forming a flanging around the processing hole, thereby completing the hole turning process of the workpiece to be processed, ensuring the accuracy of turning the hole Machining accuracy prevents cracking and serious thinning of the mouth of the turning hole, and simplifies the operation steps of turning the hole; at this time, the waste material is still adhered around the mouth of the turning edge, and the first punch continues to move down to the It is about to enter the positioning hole. At this time, a cutting structure is formed between the end of the first punch and the entrance flange of the positioning hole, and the waste material adhering to the mouth of the flange is directly cut off, which can greatly simplify the adoption. The process of the hole turning process of the mold can directly cut off and discharge the waste materials while completing the hole turning, which can effectively improve the production quality of the product and the punching and turning processing efficiency, and can also reduce the labor intensity of the staff.

Description of drawings

Fig. 1 is a structural schematic diagram when the upper mold main body and the lower mold main body described in the present embodiment are separated;

Fig. 2 is a schematic diagram of an enlarged structure at A in Fig. 1;

Fig. 3 is a structural schematic diagram of the first punch being located in the flanging die when the main body of the upper die and the main body of the lower die are clamped according to this embodiment;

Fig. 4 is a schematic diagram of an enlarged structure at B in Fig. 3;

Fig. 5 is a structural schematic diagram of the first punch being located in the positioning hole when the main body of the upper die and the die of the punching hole die described in this embodiment are closed;

FIG. 6 is a schematic diagram of an enlarged structure at point C in FIG. 5 .

Explanation of reference signs:

1. Upper die body, 11. Upper die base, 12. Elastic member, 13. Upper platen, 2. Processing punch, 21. First punch, 22. Second punch, 3. Lower die main body, 31. Flange die, 32, positioning hole, 33, lower die holder, 4, waste material, 5, workpiece, 51, flanging, 6, support.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or positional relationship shown in the drawings, and is only In order to facilitate the description of the present invention and simplify the description, it does 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 present invention.

Referring to Fig. 1 to Fig. 6, the die used for punching and turning holes described in the preferred embodiment of the present invention includes an upper die main body 1 and a lower die main body 3, and a processing punch 2 is fixedly connected to the upper die main body 1 , the lower die body 3 includes a flanging 51 die 31 arranged opposite to the processing punch 2, the die bottom of the flanging 51 die 31 is provided with a positioning hole 32 for blanking, and the processing punch The head 2 includes a first punch 21 for turning holes and a second punch 22 for punching which are sequentially connected from top to bottom, and the inner diameter of the entrance of the positioning hole 32 is the same as that of the first punch. 21 are equal in diameter.

Based on the above structure, when the workpiece 5 to be processed is turned over, the workpiece 5 to be processed is placed on the flange 51 die 31, and the upper die main body 1 of the punched hole mold is fixedly connected with a processing punch 2, and the processing punch The head 2 includes a first punch 21 and a second punch 22 connected sequentially from top to bottom. The lower die body 3 includes a flanging 51 die 31 arranged opposite to the processing punch 2. The die of the flanging 51 die 31 is The bottom is provided with a positioning hole 32 for blanking. During the mold clamping process between the upper mold body 1 and the lower mold body 3, the second punch 22 first contacts the workpiece 5 to be processed on the concave mold 31 of the flanging 51 And pass through this workpiece 5 to form a machining hole, to be able to process the prefabricated hole for the hole turning process, at this time the waste material 4 on the workpiece 5 adheres around the machining hole; the upper mold main body 1 and the lower mold main body 3 continue to mold During the process, when the second punch 22 passes through the processing hole and enters the positioning hole 32, the first punch 21 enters the flanging 51 die 31 downwards, and the material around the processing hole starts under the impact of the first punch 21. Deformation and bending, the flange 51 can form a step between the bottom of the die 31 and the positioning hole 32, and the bent material is positioned in the step and gradually undergoes plastic deformation, finally forming the flange 51 around the processing hole, but This moment waste material 4 is still adhered on the port of flanging 51; A cutting structure is formed, and the adhered waste 4 is cut off from the port of the flanging 51, thereby completing the turning and cutting of the workpiece 5. The processing efficiency of the process is improved, the processing quality of the workpiece 5 is improved, the operation steps are simplified, and the labor intensity of the staff is reduced.

Wherein, the inner diameter of the flanging 51 die 31 is greater than the inner diameter of the positioning hole 32, so the bottom of the flanging 51 die 31 and the inner wall of the positioning hole 32 can form a step for positioning the flanging 51 material, thereby for The formed flanging 51 provides space for positioning, and the flanging 51 obtained by the extrusion of the first punch 21 is positioned and plastically deformed in the step to ensure that the forming of the flanging 51 is reliable; the inner diameter of the flanging 51 die 31 and the positioning The difference between the inner diameters of the holes 32, that is, the width of the step is equal to the thickness of the flange 51 formed in the flange 51 die 31, that is, the material after bending can be between the inner wall of the flange 51 die 31 and the first punch 21. Accurate positioning can be realized in a certain space, and the width of the step formed between the die 31 and the positioning hole 32 of the flanging 51 can reliably determine the verticality of the flanging 51, ensuring the quality of the flanging hole formed during the flanging process . The diameter of the first punch 21 is greater than the diameter of the second punch 22, which is convenient for the second punch 22 to provide prerequisites for the first punch 21 to turn the hole. The formed processing hole provides a prefabricated hole for the subsequent first punch 21 to perform hole turning processing, which facilitates the smooth progress of the subsequent processing process. The end of the second punch 22 and the end of the first punch 21 are connected by a circular arc surface, which can effectively avoid the defects of cracking or serious thinning of the turning hole at the processing mouth, and ensure the turning 51 machining accuracy, simplify the operation steps of the hole turning process, and ensure the quality of the hole turning process on the workpiece 5. It should be noted here that, in this embodiment, the positioning hole 32 can be a straight hole, or a tapered hole or a stepped hole, as long as the entrance diameter of the positioning hole 32 is ensured to be smaller than the inner diameter of the groove of the flange 51 and is in line with the first The diameters of the first punches 21 are equal, that is, when the first punch 21 enters the positioning hole 32, the end of the first punch 21 can form a cutting structure with the convex edge of the positioning hole 32, so that the adhesion The waste material 4 at the port of the flanging 51 can be directly cut off and discharged from the positioning hole 32, thereby cutting off the adhered waste material 4 while realizing turning over the hole, and completing the cutting and shaping of the workpiece 5 process, effectively simplify the processing technology of the workpiece 5, improve the forming efficiency of the hole-turning process, and improve the processing quality of the product; The position gradually increases, so that the waste material 4 cut by the hole-turning head will fall from the tapered hole, preventing the waste material 4 from being stuck in the positioning hole 32 and unable to fall, which will cause the positioning hole 32 to be blocked. The efficiency and quality of the machining process are affected, and the angle range of the taper angle θ of the tapered hole is preferably 1°≤θ≤5°. In other embodiments, the shape of the positioning hole 32 is not limited by this embodiment, and an appropriate shape can be selected according to actual needs.

Referring to Fig. 1 to Fig. 6, the lower die main body 3 includes a lower die base 33, and the hole-turning die is fixedly connected to the lower die base 33, and the lower die base 33 is provided with a pair of support members 6 which are arranged on both sides of the punching die , the supporting member 6 is telescopically connected with the lower mold base 33, when the workpiece 5 is installed, the supporting member 6 is in the ejected state, and the staff can directly place the workpiece 5 on the supporting member 6 for positioning, which is convenient and quick; After the work of reversing the workpiece 5 and cutting off the waste material 4 is completed, the support member 6 can directly push the workpiece 5 out, which is convenient for the staff to disassemble the processed workpiece 5 and improves the installation and disassembly efficiency of the workpiece 5 . In this embodiment, the support member 6 is a ejector pin, which can ensure the stability of the ejection process of the workpiece 5 . The upper die body 1 includes an upper die base 11 and an upper platen 13 that is movably connected to the upper die base 11 through an elastic member 12. The processing punch 2 is fixedly connected to the upper die base 11, and the processing punch 2 is vertically installed on the upper platen. 13, when the upper mold main body 1 and the lower mold main body 3 are clamped, the upper platen 13 is first in contact with the workpiece 5 installed on the hole-turning die, and the workpiece 5 is flattened to ensure the positioning of the workpiece 5 during processing. Stability, under the action of the elastic member 12, the upper die base 11 is gradually pressed down, driving the processing punch 2 to move down to pass through the upper platen 13, and make the second punch 22 of the processing punch 2 and the workpiece 5 contact each other In the process of gradually pressing down the upper die set, the second punch 22 pre-punches the workpiece 5 to form a processing hole, and the first punch 21 squeezes the material around the processing hole when it enters the flanging 51 die 31 Press to make it bend to form a flanging 51, and the flanging 51 is positioned in the die 31 of the flanging 51. After the processing of the flanging 51 is completed, the upper die base 11 drives the processing punch 2 to leave the workpiece 5 until the upper platen 13 leaves the workpiece 5 to cancel the restriction on the workpiece 5, the support member 6 on the lower mold base 33 stretches out the workpiece 5, which is convenient for the staff to collect the processed workpiece 5.

The mold for punching and turning holes of the present invention includes an upper mold main body and a lower mold main body, the upper mold main body is fixedly connected with a processing punch, and the lower mold main body includes a turning punch arranged opposite to the processing punch. A side die, the bottom of the flanging die is provided with a positioning hole for blanking, and the processing punch includes a first punch for turning a hole and a first punch for punching that are sequentially connected from top to bottom. The second punch, the inner diameter of the entrance of the positioning hole is equal to the diameter of the first punch. The processing punch on the main body of the upper die is facing the flanging die, and can punch and flang the workpiece to be processed on the flanging die. The processing punch includes sequentially connected from top to bottom. The first punch and the second punch, when the main body of the upper die and the main body of the lower die are clamped, the second punch can pass through the surface of the workpiece to be processed and enter the flanging die to form a punch on the workpiece to be processed. At this time, the waste material adheres to the surrounding of the processing hole. When the main body of the upper mold and the main body of the lower mold continue to close the mold, the first punch gradually enters the flanging die downwards. At this time, the material around the processing hole is Under the impact of the first punch, it gradually bends into the flanging die and undergoes plastic deformation, thereby forming a flanging around the processing hole, thereby completing the hole turning process of the workpiece to be processed, ensuring the accuracy of turning the hole Machining accuracy prevents cracking and serious thinning of the mouth of the turning hole, and simplifies the operation steps of turning the hole; at this time, the waste material is still adhered around the mouth of the turning edge, and the first punch continues to move down to the It is about to enter the positioning hole. At this time, a cutting structure is formed between the end of the first punch and the entrance flange of the positioning hole, and the waste material adhering to the mouth of the flange is directly cut off, which can greatly simplify the adoption. The process of the hole turning process of the mold can directly cut off and discharge the waste materials while completing the hole turning, which can effectively improve the production quality of the product and the punching and turning processing efficiency, and can also reduce the labor intensity of the staff.

It should be understood that the terms "first" and "second" are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, "first" information may also be referred to as "second" information without departing from the scope of the present invention, and similarly, "second" information may also be referred to as "first" information.

The above is a preferred embodiment of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements and deformations can also be made, these improvements and deformations It is also regarded as the protection scope of the present utility model.

Claims (10)

1. a kind of mold for carrying out punching press hole flanging, which is characterized in that including upper mould body and lower die main body, the upper mold master It is fixedly connected with processing punch on body, the lower die main body includes the flange cavity plate positioned opposite with the processing punch, described The mould bottom of flange cavity plate offers the location hole for blanking, and the processing punch includes the use being linked in sequence successively from top to bottom The first punch in hole flanging and the second punch for punching, the internal diameter of the inlet of the location hole and first punch Diameter is equal.

2. the mold according to claim 1 for carrying out punching press hole flanging, which is characterized in that the mould bottom of the flange cavity plate The step for being positioned to flange material is formed between the location hole.

3. the mold according to claim 2 for carrying out punching press hole flanging, which is characterized in that the width of the step and institute The thickness for stating the flange formed in flange cavity plate is equal.

4. the mold according to any one of claims 1 to 3 for carrying out punching press hole flanging, which is characterized in that described first The diameter of punch is more than the diameter of second punch.

5. according to claim 4 for carrying out the mold of punching press hole flanging, which is characterized in that first punch with it is described It is connected using arc surface transition between second punch.

6. according to claim 5 for carrying out the mold of punching press hole flanging, which is characterized in that the location hole be straight hole or Bellmouth or stepped hole.

7. the mold according to claim 6 for carrying out punching press hole flanging, which is characterized in that the location hole is taper Hole, and the angular range of the taper angle theta of the bellmouth meets 1 °≤θ≤5 °.

8. the mold according to claim 4 for carrying out punching press hole flanging, which is characterized in that under the lower die main body includes Die holder, the hole flanging cavity plate are fixedly connected on the lower die holder, be provided on the lower die holder at least a pair be divided into it is described The support element of hole flanging cavity plate both sides.

9. the mold according to claim 8 for carrying out punching press hole flanging, which is characterized in that the support element is liftout Pin, the jigger pin are telescopically connected on the lower die holder.

10. according to claim 1 for carrying out the mold of punching press hole flanging, which is characterized in that the upper mould body includes Upper die holder and the top board being flexibly connected with the upper die holder by elastic component, the processing punch are fixedly connected on the upper mold On seat, and the processing punch is vertically arranged on the top board.