CN210208244U - Special hammer for spinning disc-shaped step forging - Google Patents

Abstract

A special hammer for spinning disk-shaped step forgings comprises a spinning section, a clamping section and a transition section, wherein the spinning section is used for pressing the end face of the forgings when the forgings rotate so as to extrude disk-shaped steps on the forgings, the clamping section is used for clamping a press, the transition section is respectively connected with the spinning section and the clamping section, the spinning section is of a rectangular structure, the ratio of the width to the thickness of the spinning section is 1.25-1.4, one end of the spinning section in the length direction is connected with the transition section, the other end of the spinning section in the length direction is provided with a section of inwards-recessed arc surface, the axis direction of the arc surface is parallel to the thickness direction of the spinning section, the radius of the arc surface is equal to the outer diameter of the disk-shaped steps extruded on the forgings by the hammer, chamfers matched with the roots of the disk-shaped steps are arranged on the edges of the arc surface, so that the contact area of the hammer and the outer arc, thereby reducing the blank loss and the blank manufacturing cost and improving the spinning production efficiency.

Description

Special hammer for spinning disc-shaped step forging

Technical Field

The utility model relates to a special tup field of spinning especially relates to a special tup for spinning disk step class forging.

Background

The spinning is to fix the flat or hollow blank on the die of the spinning machine, press the blank with the spinning wheel or driving rod while the blank rotates along with the main shaft of the machine, so as to generate local plastic deformation, and the local plastic deformation is gradually expanded to the whole surface of the blank and tightly adhered to the die under the combined action of the feeding motion of the spinning wheel and the rotating motion of the blank, thus completing the spinning process of the part. Spinning is a special forming method, and can finish the processes of deep drawing, flanging, necking, bulging, curling and the like of rotating bodies with various shapes. When a forging with a disc-shaped step is spun, a hammer head is usually arranged on a press, the hammer head is pressed on the end face of the forging by the press, and the disc-shaped step can be spun on the forging by gradually pressing down the hammer head when the forging rotates. However, the traditionally used hammer is a wide flat anvil hammer, the appearance of the hammer is a standard rectangular body, one plane of the hammer presses the forging downwards during spinning, and the other plane perpendicular to the plane limits the deformation of the forging to form a disc-shaped step on the forging, so that the plane at one end of the hammer is in contact with the outer arc surface of the disc-shaped step during spinning, the contact area between the hammer and the disc-shaped step is small, the roundness of the outer arc surface of the disc-shaped step after spinning is insufficient, edges and corners easily exist, and the process size and the surface quality are difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

For solving the problem that the wide flat anvil tup that solves traditional use is lower to the spinning quality and the efficiency of disk step class forging, the utility model provides a special tup for spinning disk step class forging.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the utility model provides a special tup for spinning disk step class forging, is including being used for pressing on the forging terminal surface when the forging rotates thereby extrude the spinning section of disk step on the forging, be used for supplying the press to press the clamping section that presss from both sides tightly and connect the changeover portion of spinning section and clamping section respectively, the spinning section is the cuboid structure, and the ratio of width and thickness of spinning section is 1.25 ~ 1.4, and the one end of spinning section along its length direction is connected with the changeover portion, and the other end of spinning section along its length direction has one section arc surface that inwards caves in and set up, and the axis direction of arc surface is parallel with the thickness direction of spinning section, and the radius of arc surface equals the external diameter of the disk step that the tup was spun on the forging, and the border of arc surface be provided with the root assorted chamfer of disk step.

Preferably, the clamping section and the transition section are both in a cylindrical structure, the thickness of the spinning section and the diameter of the clamping section are both larger than the diameter of the transition section, and the length of the clamping section is smaller than that of the transition section.

Preferably, the axis of the clamping section coincides with the axis of the spinning section.

According to the technical scheme, the beneficial effects of the utility model are that:

the utility model provides a special tup for spinning disk step class forging, dress clamp the forging on the revolving stage before spinning, the clamping section is pressed from both sides by the press earlier during spinning, and press a length of spinning section width face on the terminal surface of forging, make the axis of spinning section arc surface coincide with the axis that the revolving stage drove the forging rotation, start revolving stage and press, along with the rotation of forging and press drive tup and push down, can spin out disk step on the forging, because the radius of spinning section arc surface equals the external diameter of disk step, so in the process of spinning, whole arc surface all can all contact with the extrados of disk step, namely the contact mode is whole contact between cambered surface and the cambered surface, and the wide flat tup that the tradition adopted is the extrados contact of an terminal surface and disk step, just increased the area of contact of tup and forging disk step extrados by a wide margin under comparing, and in addition the utility model discloses control the width-thickness ratio of spinning section, the shape of spinning section arc surface has been optimized more, the border of arc surface still be provided with the root assorted chamfer of disk step, can guarantee disk step outer disc circularity through these means, and make each smooth and sly transition of disk step and can not have the edges and corners, improve the process dimension and the surface quality of forging behind spinning process, just can reduce the number of times that need carry out the spinning to the forging, thereby reduce blank spinning loss and blank manufacturing cost, promote the production efficiency of forging, satisfy the requirement of carrying out high-efficient high quality spinning to the forging.

The utility model discloses in can set up centre gripping section and changeover portion respectively to short thick cylinder structure and long and thin cylinder structure to when reducing tup manufacturing cost, also can effectively guarantee the whole service quality of tup and the reliability that the press carries out the centre gripping to the tup, have simple structure, convenient to use, be convenient for make etc. advantage.

Drawings

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic front view of the spinning device according to the present invention;

fig. 3 is a schematic perspective view of the spinning device according to the present invention.

The labels in the figure are: 1. spinning section, 2, transition section, 3, clamping section, 4, forging, 5, press, 6, revolving stage.

Detailed Description

Referring to the drawings, the specific embodiments are as follows:

the special hammer for spinning the disc-shaped step forging comprises a spinning section 1, a clamping section 3 and a transition section 2, wherein the spinning section 1 is used for pressing the end face of the forging 4 to extrude disc-shaped steps on the forging 4 when the forging 4 rotates, the clamping section 3 is used for clamping a press 5, and the transition section 2 is respectively connected with the spinning section 1 and the clamping section 3, the spinning section 1 is of a rectangular structure, the ratio of the width to the thickness of the spinning section 1 is 1.25-1.4, one end of the spinning section 1 in the length direction of the spinning section is connected with the transition section 2, the other end of the spinning section 1 in the length direction of the spinning section is provided with a section of inwards-recessed arc surface, the axis direction of the arc surface is parallel to the thickness direction of the spinning section 1, the radius of the arc surface is equal to the outer diameter of the disc-shaped steps extruded on the forging 4 by the hammer, and the edge of. The clamping section 3 and the transition section 2 are both of cylindrical structures, the thickness of the spinning section 1 and the diameter of the clamping section 3 are both larger than the diameter of the transition section 2, the length of the clamping section 3 is smaller than that of the transition section 2, and the axis of the clamping section 3 coincides with that of the spinning section 1.

In the embodiment, a forging 4 is clamped on a rotary table 6 before spinning, a clamping section 3 is clamped by a press 5 during spinning, one long and wide surface of a spinning section 1 is pressed on the end surface of the forging 4, the axis of the arc surface of the spinning section 1 is coincided with the axis of the rotation of the forging 4 driven by the rotary table 6, the rotary table 6 and the press 5 are started, a disc-shaped step can be spun on the forging 4 along with the rotation of the forging 4 and the downward pressing of a hammer driven by the press 5, and the whole arc surface of the spinning section 1 is ensured to be contacted with the outer arc surface of the disc-shaped step, so that the contact area of the hammer and the outer arc surface of the disc-shaped step of the forging 4 is increased, the roundness of the disc-shaped step of the forging can be ensured, all parts of the disc-shaped step can be smoothly transited without edges and corners, and the process size; through setting up clamping section 3 and changeover portion 2 respectively to short thick cylinder structure and long and thin cylinder structure to when reducing tup manufacturing cost, also can effectively guarantee the whole service quality of tup and press 5 and carry out the reliability of centre gripping to the tup, have simple structure, advantages such as convenient to use, the manufacturing of being convenient for can satisfy the requirement of carrying out high-efficient high quality spinning to forging 4.

Claims (3)

1. The utility model provides a special tup for spinning disk step class forging which characterized in that: comprises a spinning section (1) which is used for pressing the end surface of the forging (4) when the forging (4) rotates so as to press a disc-shaped step on the forging (4), a clamping section (3) which is used for clamping a press (5), and a transition section (2) which is respectively connected with the spinning section (1) and the clamping section (3), spinning section (1) is the cuboid structure, the ratio of the width of spinning section (1) and thickness is 1.25 ~ 1.4, spinning section (1) is connected with changeover portion (2) along its length direction's one end, spinning section (1) has the arc surface of one section inside sunken setting along its length direction's the other end, the axis direction of arc surface is parallel with the thickness direction of spinning section (1), the radius of arc surface equals the external diameter of the disk step that the tup spun out on forging (4), the border of arc surface be provided with the root assorted chamfer of disk step.

2. The special hammer head for spinning disc-shaped step forgings according to claim 1, is characterized in that: the clamping section (3) and the transition section (2) are both of cylindrical structures, the thickness of the spinning section (1) and the diameter of the clamping section (3) are both larger than the diameter of the transition section (2), and the length of the clamping section (3) is smaller than that of the transition section (2).

3. The special hammer head for spinning disc-shaped step forgings according to claim 1, is characterized in that: the axis of the clamping section (3) is superposed with the axis of the spinning section (1).

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