CN210877094U - Combined die - Google Patents

Abstract

The utility model relates to an electric power, railway equipment production and processing field, concretely relates to U type string lopps and a combination mould of U type link plate class electric power product production and processing, including being used for setting up on the punch press die shank, be equipped with the last module of waiting to mate the guiding hole to and be used for setting up the lower module on the punch press workstation, be provided with down in the module with the work piece in wait the coaxial direction dabber that rectifies through-hole looks adaptation, the location tip of direction dabber is most advanced, and the guiding hole adaptation of direction dabber and last module, realizes that work piece through-hole concentricity rectifies. The utility model discloses only need 1 time heating forming, solved the problem that original shaping frock can not satisfy the concentricity requirement of important mating holes, can realize the contour machining of these two kinds of types work pieces of U type link plate and link simultaneously, reduced artifical error, the qualification rate is high, and the rework volume is little.

Description

Combined die

Technical Field

The utility model relates to an electric power, railway equipment production and processing field especially relate to a combined die utensil of ring and the production and processing of U type link plate class electric power product is hung to the U type.

Background

In the conventional process for machining a U-shaped workpiece, the same die can only correspond to one type of workpiece, and the following steps are often involved: 1. heating a workpiece; 2. bending; 3. manually correcting the concentricity of the through holes; 4. and (5) molding. After the through hole position of the U-shaped workpiece is corrected by different technical workers, the difference of concentricity of the two holes is large, the concentricity error of 2-4 mm required by the process cannot be guaranteed, and the symmetry of the product is poor, so that the alignment is difficult during hole alignment assembly. When manual correction is carried out, hammer marks are formed on the surface of the product, the appearance quality is poor, the qualification rate is low, and the rework amount is large; and the reworking needs the second heating, and the production cost is huge.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the problem of the prior art have the through-hole concentricity error to the manual correction of U type work piece and lead to the assembly difficulty greatly provides a combination mould, satisfies the concentricity requirement of important mating holes, reduces artifical error, assembles smoothly.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a combined die, including being used for setting up on the punch press die shank, be equipped with the last module of treating the guiding hole that closes, and be used for setting up the lower module on the punch press workstation, be provided with on the lower module with treat the direction dabber of coaxial correction through-hole looks adaptation in the work piece, the location tip of direction dabber is most advanced, and the guiding hole adaptation of direction dabber and last module, when going up module and lower module cooperation punching press and treating the correction work piece, use the direction dabber as the reference, the through-hole that treats the correction with the work piece penetrates the direction dabber, thereby realize that work piece through-hole concentricity corrects, reduce assembly error.

The installation axis of the guide mandrel is vertical to the lower surface of the upper module and the upper surface of the lower module.

The forming device further comprises a forming die, wherein the forming die is provided with a forming surface matched with the inner side surface of the standard workpiece, and the forming surface is formed by connecting a U-shaped transition surface with an upper parallel surface and a lower parallel surface; and a positioning through hole for the guide mandrel to pass through is arranged at the corresponding position of the forming die, so that the inner side of the workpiece to be corrected is supported when the workpiece to be corrected is formed by pressing, and the symmetry is ensured while the workpiece to be corrected is aligned to be concentric. Preferably, the mould is provided with a hand-held piece on the side surface, so that the mould can be conveniently moved in real time.

Furthermore, the lower surface of the upper module and the upper surface of the lower module are provided with first grooves which correspond to the positions of the circular ring parts of the hanging rings, so that the hanging plates and the hanging rings can be processed on the same die.

The upper module is arranged on an upper die handle seat, and the upper die handle seat is fixed on a punch slide block through a punch die handle; the lower die block is arranged on a lower die bottom plate, and the lower die bottom plate is arranged on a workbench of the punch press. Furthermore, a second groove is formed in the lower die base plate, and a through hole matched with the guide mandrel is formed in the lower die block; the guide mandrel is relatively fixed in the groove of the lower die bottom plate, reaches the outer side of the through hole through the through hole in the lower die block, and is fixedly installed.

Preferably, the guide mandrel is in a stepped shaft shape, and the diameter of the middle shaft is larger than that of the front end; the lower module is boss-shaped, the two layers of through holes are coaxial and are matched with the stepped shaft of the guide mandrel, so that the relative position of the guide mandrel is fixed, and the guide mandrel is convenient to replace.

The guide mandrel, the moulding bed, the upper module and the lower module can be detached and replaced according to different specification requirements.

Preferably, the utility model discloses still include spacing subassembly for inject the motion stroke of punch press slider. The limiting component can be limited by a slide block guide rail and also can be limited by other prior art forms such as infrared rays or triggers.

When the device is used, the inner side surface of a pre-bent U-shaped workpiece is close to the inner side surface of the pre-bent U-shaped workpiece by taking the moulding bed as a reference, the guide mandrel penetrates through the workpiece and the corresponding through holes of the moulding bed, then the workpiece and the moulding bed are placed on the lower module together, and the forming correction is carried out. The punch is linked with the upper module to move downwards together, and the descending position of the sliding block is limited by the limiting component; under the action of pressure, the opposite bent sides of the U-shaped workpiece are close to the upper surface and the lower surface of the forming die, the pre-bent U-shaped workpiece is subjected to pressure forming under the correction of the guide mandrel and the forming die, and the formed workpiece is taken down after the upper die block moves upwards along with the punch press slide block, so that the concentricity correction of the through hole of the workpiece and the shaping of the upper and lower opposite bent surfaces are completed, and the through hole and the upper and lower opposite bent surfaces are relatively parallel or symmetrical.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses only need 1 time heating forming, solved the problem that original shaping frock can not satisfy the concentricity requirement of important mating holes, reduced artifical error, make the assembly smooth, the volume of doing over again is little.

2. The utility model discloses replaced the mode of one set of frock of a specification, through changing module, direction dabber and child mould from top to bottom, satisfied and realize different specification parts machining on same mould, still can realize the contour machining of these two kinds of type work pieces of U type link plate and link simultaneously.

3. The utility model discloses greatly reduced manufacturing cost, greatly improved original product percent of pass, improved production efficiency, product quality and productivity.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a schematic view of a guide mandrel structure.

Fig. 3 is a top view of the handpiece of the present embodiment.

Fig. 4 is a front view of the handpiece of the present embodiment.

Fig. 5 is a front view of a peg board.

Figure 6 is a side view of the peg board of figure 5.

Fig. 7 is a front view of a suspension loop.

Fig. 8 is a side view of the suspension loop of fig. 7.

The labels in the figure are: 1-upper die handle seat, 2-upper die block, 3-lower die bottom plate, 4-lower die block, 5-guiding mandrel, 6-moulding bed, 7-first groove, 8-hand piece, 9-limiting column and 10-bumping rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a combined die, as shown in fig. 1, 2, including be used for setting up on the punch press die shank, be equipped with the last module 2 that waits to cooperate the guiding hole to and be used for setting up the lower module 4 on the punch press workstation, be provided with on the lower module 4 with treat coaxial direction dabber 5 of proofreading and correct through-hole looks adaptation in the work piece, the location tip of direction dabber 5 is the pointed end, this pointed end can be the button head form, or the taper, or the transition curved surface that the camber reduces gradually, and the guiding dabber 5 with last module 2's guiding hole adaptation. When the guide mandrel 5 is arranged in a through hole of a workpiece to be machined, a certain gap is formed between the guide mandrel 5 and the through hole, the guide mandrel completely penetrates through the through hole below the workpiece to be arranged, when the upper module 2 and the lower module 4 are matched for punching the workpiece to be corrected, the guide mandrel 5 is used as a reference, and the through hole to be corrected of the workpiece penetrates into the guide mandrel 5, so that a matched bolt can smoothly penetrate through the through hole during assembly. In the process, the side face of the tip of the guide mandrel is abutted to the workpiece and cannot completely penetrate through the through hole arranged on the workpiece due to insufficient pre-bending degree of the workpiece to be machined, and the through hole arranged on the workpiece is automatically corrected along the transition curved surface of the guide mandrel under the punching force of the punch, so that the concentricity correction of the through hole of the workpiece is realized. The installation axis of the guide mandrel 5 is vertical to the lower surface of the upper module 2 and the upper surface of the lower module 4. The mould is also provided with a moulding bed 6, as shown in figures 1, 3 and 4, the moulding bed 6 is provided with a moulding surface matched with the inner side surface of a standard workpiece, and the moulding surface is formed by connecting a U-shaped transition surface with an upper parallel surface and a lower parallel surface; and a positioning through hole for the guide mandrel 5 to pass through is arranged at the corresponding position of the moulding bed 6, so that the inner side surface of the workpiece to be corrected is supported when the workpiece is pressed, and the symmetry is ensured. The side surface of the moulding bed 6 is provided with a hand-held piece 8, which is convenient for the real-time movement of the moulding bed 6.

As shown in fig. 1, further, the lower surface of the upper module 2 and the upper surface of the lower module 4 are provided with first grooves 7 corresponding in position and matched with the circular ring part (including the part transitional with the matching hole) of the hanging ring, so that the two types of hanging plates and hanging rings can be processed on the same die.

The upper module 2 is arranged on the upper die handle seat 1, and the upper die handle seat 1 is fixed on a punch slide block through a punch die handle; lower module 4 sets up on lower die bottom plate 3, and lower die bottom plate 3 is used for setting up on the punch press workstation. Furthermore, a second groove is formed in the lower die base plate 3, and a through hole matched with the guide mandrel 5 is formed in the lower die block 4; the guide mandrel 5 can be fixed in a groove of the lower die base plate 3 through a bolt and reaches the outer side of the through hole through a through hole in the lower die block 4, so that the guide mandrel 5 is fixedly installed.

Further, as shown in fig. 2, the guiding mandrel 5 can be set as a stepped shaft, and the diameter of the middle shaft is larger than that of the front end; lower module 4 is the boss type, and two-layer through-hole is coaxial, the through-hole on boss upper strata with the front end adaptation of direction dabber 5, the through-hole on boss lower floor with the middle part axle adaptation of direction dabber 5, the base is placed in lower mould bottom plate 3 recesses naturally, also can fix the position of direction dabber 5. The guide mandrel 5, the moulding bed 6, the upper module 2 and the lower module 4 can be detached and replaced according to different specification requirements.

Furthermore, the die also comprises a limiting assembly used for limiting the movement stroke of the punch press sliding block. The limiting assembly comprises two limiting columns 9 and a collision rod 10 fixed on a sliding block of the punch press, the two limiting columns 9 are symmetrically distributed on two sides of the die, one end of each limiting column is connected with the punch press, and the other end of each limiting column is fixed on the lower die block 4 and the lower die bottom plate 3 through bolts. The two ends of the touch rod 10 are connected with the limit posts 9 with long hole chutes on two sides in a sliding way through the parts such as limit pins and bolts. The limiting assembly can also control the punch press sliding block to move downwards through an infrared anti-collision limiter, a trigger and other prior art forms.

Processing a workpiece, namely uniformly heating the whole workpiece in a medium-frequency electric furnace at the heating temperature of 800 ℃; secondly, bending the mould under the conditions of initial temperature of 800 ℃ and final temperature of about 750 ℃; then, the bending workpiece is subjected to pressure forming at the temperature of 700 ℃; and finally, finishing the finished product.

In the forming process, the bending degree of the pre-bent U-shaped workpiece is about 35 degrees, the inner side surface of the pre-bent U-shaped workpiece is close to the inner side surface of the pre-bent U-shaped workpiece by taking the moulding bed 6 as a reference, the guide mandrel 5 penetrates through the workpiece and the corresponding through hole of the moulding bed 6, then the workpiece and the moulding bed 6 are placed on the lower module 4 together, and the forming correction is carried out. The punch press is linked with the upper module to move downwards together. Under the action of pressure, the opposite bending sides of the U-shaped workpiece are close to the upper surface and the lower surface of the moulding bed 6, the pre-bent U-shaped workpiece is subjected to pressure forming under the correction of the guide mandrel 5 and the moulding bed 6, the formed workpiece is taken down after the upper module moves upwards along with the punch press sliding block, the concentricity correction of the through hole of the workpiece and the forming of the upper bending surface and the lower bending surface are finished, the workpiece is relatively parallel or symmetrical, the schematic diagrams of the formed product hanging plate are shown in figures 5 and 6, and the hanging ring is shown in figures 7 and 8.

The workpiece adopted by the embodiment is low-carbon steel and medium-carbon steel, the temperature is strictly controlled, the finish forging temperature of the low-carbon steel is in a two-way area of austenite and ferrite, and both phases are better in shaping; the finish forging temperature of the medium carbon steel is in an austenite single-phase region, the structure is uniform, and the shaping is good. Therefore, the workpiece after being heated under the conditions of 700-740 ℃ has accurate size and stable quality.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a combined die, its characterized in that, including be used for setting up on the punch press die shank, be equipped with and treat last module (2) of guiding hole that cooperates to and be used for setting up lower module (4) on the punch press workstation, be provided with down on module (4) and treat coaxial direction dabber (5) of proofreading and correct through-hole looks adaptation with the work piece, the location tip of direction dabber (5) is most advanced, just direction dabber (5) with the guiding hole adaptation of last module (2).

2. A combined mould according to claim 1, characterised in that the mounting axis of the guiding mandrel (5) is perpendicular to the lower surface of the upper mould block (2) and the upper surface of the lower mould block (4).

3. The combined die of claim 1, further comprising a die (6), wherein the die (6) is provided with a forming surface matched with the inner side surface of the standard workpiece, and the forming surface is formed by connecting a U-shaped transition surface with an upper parallel surface and a lower parallel surface; and a positioning through hole for the guide mandrel (5) to pass through is arranged at the corresponding position of the moulding bed (6).

4. A combined mould according to claim 3, characterised in that on the side of the mould (6) there is a hand piece (8).

5. A combined mould according to claim 1, characterised in that the lower surface of the upper mould block (2) and the upper surface of the lower mould block (4) are provided with correspondingly positioned first recesses (7) adapted to the ring parts of the suspension rings.

6. A combined mould according to claim 1, characterised in that the upper mould block (2) is arranged on an upper die shank holder (1), which upper die shank holder (1) is fixed to a punch slide by means of a punch shank; the lower die block (4) is arranged on the lower die bottom plate (3), and the lower die bottom plate (3) is arranged on a workbench of the punch press.

7. A combined mould according to claim 6, characterised in that the lower mould base plate (3) is provided with a second recess, and the lower mould block (4) is provided with a through hole adapted to the guiding mandrel (5); the guide mandrel (5) is relatively fixed in the groove of the lower die base plate (3) and reaches the outer side of the through hole through the through hole in the lower die block (4).

8. A combined mould according to any one of claims 1-7, characterised in that the guiding mandrel (5) is stepped shaft-like in shape, the middle shaft diameter being larger than the front end diameter; the through hole of the lower module (4) is boss-shaped, and the two layers of through holes are coaxial and are matched with the stepped shaft of the guide mandrel (5).

9. A combined mould according to any one of claims 1-7, characterised in that the guiding mandrel (5), the moulding bed (6), the upper mould block (2) and the lower mould block (4) are removable and replaceable.

10. The combination die of any one of claims 1-7, further comprising a limiting assembly for limiting the travel of the punch slide.

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