CN87208671U

CN87208671U - Low-noise sliding hammer for metal variable diameter equipement

Info

Publication number: CN87208671U
Application number: CN 87208671
Authority: CN
Inventors: 张美莉
Original assignee: Shanghai Second Sewing Machine Needle Factory
Current assignee: Shanghai Second Sewing Machine Needle Factory
Priority date: 1987-05-30
Filing date: 1987-05-30
Publication date: 1988-05-11

Abstract

The utility model provides a low noise sliding hammer for metal variable diameter equipment, on which the lateral direction linear distance of the upper side surface which is in rolling contact with a rolling pole is 25-32 millimeters. The upper side surface is an arc-shaped surface, one side of the longitudinal midline of which is provided with an inclined plane which forms a 75 DEG angle with the perpendicular bisector of the upper side surface, and the radius of the arc-shaped surface is bigger than the radius of the prior art. The sliding hammer of the utility model can cause the working impact noise of the variable diameter equipment to be reduced by 10 decibels or so, and the production efficiency can be raised by 80%.

Description

Low-noise sliding hammer for metal variable diameter equipement

The utility model relates to a kind of sliding hammer that is used for metal reducing equipment, particularly a kind of sliding hammer of low noise that is used for metal reducing equipment.

Reducing equipment, for example swager is to utilize the metal wire rod characteristic of plastic deformation, utilizes the mould in the head of swaging, to desired size and precision, this equipment is specially adapted to the reducing needs of thin diameter wire rod with the metal wire rod cold forging.The head of swaging generally includes cast iron housing, be fixed on the steel ring in the shell, the plurality of rollers that is slidingly matched with the steel ring inner surface, evenly fix its position by fixed mount, that in the inner ring that roller surrounded, rotate but main shaft that do not contact, and a pair of mould and a pair of sliding hammer of sliding gomphosis in main shaft end face chute with roller.Be positioned at the sliding hammer at main shaft end face chute two ends, when the one end is subjected to the extruding of roller and when promoting with mould that its other end contacts, is forged and reducing with regard to making the wire rod that is positioned in the mould.But the planform of this sliding hammer makes its frequent bump roller under fair speed can cause bigger impact noise, simultaneously, sliding hammer and the impact of roller make the roller can be with fast speed with the direction rotation identical with the main axis rotation direction together with fixed mount, thereby cause the minimizing of extruding number of times in the unit interval, also be that reducing speed reduces, production efficiency is affected.

The purpose of this utility model provides a kind of sliding hammer of low noise that is used for metal reducing equipment, the impact noise when using this sliding hammer can reduce the work of reducing equipment effectively, and can accelerate reducing speed, enhance productivity.

The purpose of this utility model realizes by the following method, a kind of sliding hammer of low noise that is used for metal reducing equipment, comprise two with rotary main shaft on end face chute form fit, the beside of sliding-contact, a downside that contacts with the mould upper surface, and upper side that rolls and contact with roller, wherein, the horizontal air line distance of described upper side is the 25-32 millimeter, and described upper side is that a side at its longitudinal midline has one to overlap with described longitudinal midline on one side, the plane becomes the arcwall face on the inclined-plane at 75 ° of angles with the perpendicular bisector of described upper side.

The utility model has the advantages that provides a kind of sliding hammer of low noise that is used for metal reducing equipment, uses this sliding hammer, and the impact noise the during work of reducing equipment can reduce about 10 decibels, and production efficiency can improve 80%.

Below in conjunction with accompanying drawing embodiment of the present utility model is done detailed explanation:

Fig. 1 is the header structure figure that swages in the prior art;

Fig. 2 is the structure-motion diagram of sliding hammer in the prior art;

Fig. 3 is the utility model header structure figure that swages;

Fig. 4 is the sliding hammer of the utility model low noise first embodiment axonometric drawing;

Fig. 5 is the sliding hammer of the utility model low noise second embodiment axonometric drawing;

Fig. 6 is the sliding hammer of a utility model low noise motion diagram.

Referring to Fig. 1, this is in the prior art, the header structure figure that swages on the swager one by one of metal reducing equipment, the head of swaging comprises the steel ring 1 that fixedly is entrenched in the cast iron housing (not shown), 12 rollers 3 that are slidingly matched with steel ring 1 inner surface, evenly fix its position by fixed mount 2, that in the inner ring that roller 3 is surrounded, rotate but main shaft 4 that do not contact, and the identical mould 5 sliding hammer 6 identical of a pair of shape of sliding gomphosis in main shaft 4 end face chutes with a pair of shape with roller 3.When main shaft 4 rotations, one of each of mould 5 and sliding hammer 6 is subjected to action of centrifugal force, outwards move dorsad along the radial direction of main shaft 4 respectively, when each upper sides (being lateral surface) of two sliding hammers 6 be subjected to two rollers 3 staggered relatively restriction and when the pivot of main shaft 4 moves, promotion mould 5 forges and is positioned at two metal wire rod (not shown)s in mould 5 intermediate cavity, thereby makes the metal wire rod reducing.

Referring to Fig. 2, this is structure one motion diagram of sliding hammer 6 in the prior art, sliding hammer 6 has two beside 7 and 8 with main shaft 4 end face chute form fit, sliding-contact, have one with mould 5 on the downside 9 of end in contact, and the upper side 10 that rolls and contact with roller 3, the wherein horizontal air line distance L of upper side 10 ₁Be 16 millimeters, upper side 10 is radius R ₁It is 10 millimeters arcwall face.Because the radius R of arc upper side 10 ₁Less.Therefore enter rolling when contacting, its entrance angle α when upper side 10 and roller 3 ₁Bigger, cause (1) impact noise bigger thus, (2) roller 3 has a rotational velocity faster on the direction of rotation of sliding hammer 6, influenced sliding hammer 6 and the frequency of exposure of roller 3 in the unit interval, thereby made production efficiency lower.

Referring to Fig. 3, this is the position assumption diagram in the head of swaging of the sliding hammer 11 of the utility model low noise on swager, as can be seen from Figure 3, except the sliding shape and structure of hammering 11 upper sides 15 into shape of low noise changes to some extent, all position component, the equal no change of structure.

Referring to Fig. 4, this is the sliding hammer of the utility model low noise first example structure figure.11a is T-shaped for the sliding hammer of low noise shown in Figure 4, it have two with main shaft 4 on the beside 12 of end face chute form fit, sliding-contact and 13, one with mould 5 on the downside 14 of end in contact, and upper side 15a who contacts with roller 3 rollings.Wherein, the horizontal air line distance L of upper side 15a ₂Be the 25-32 millimeter, and be the arcwall face that an inclined-plane 16 is arranged.Inclined-plane 16 is positioned at a side of the longitudinal midline 17 of upper side 15a, and the one side on inclined-plane 16 overlaps the angle α of the perpendicular bisector 18 of inclined-plane 16 and upper side 15a with longitudinal midline 17 ₂It is 75 °.The radius R of the arcwall face on the upper side 15a ₂Be the 40-45 millimeter.

Referring to Fig. 5, this is the sliding hammer of the utility model low noise second example structure figure.11b is also T-shaped for the sliding hammer of low noise shown in Figure 5, also has beside 12 and 13, downside 14, inclined-plane 16 and the horizontal air line distance L identical with the sliding hammer of low noise shown in Figure 4 11a ₂, just the arcwall face of its upper side 15b comprises three arc surfaces.First arc surface 20 is positioned at the opposite side of the longitudinal midline 17 of upper side 15b, its on one side and longitudinal midline 17 overlap, the center of circle on perpendicular bisector 18, radius R ₂Be the 40-45 millimeter, chord length is 8 millimeters.Second arc surface 21 is connected with the another side of first arc surface 20, the center of circle on perpendicular bisector 18 apart from upper side 30-35 millimeter place, also be that the center of circle is along perpendicular bisector 18 10 millimeters places above the first arc surface center of circle, three-arc face 19 is connected with the another side on inclined-plane 16, and the center of circle of the center of circle and second arc surface 21 overlaps.

Referring to Fig. 6, this is the sliding hammer of a utility model low noise motion diagram.Because the arcwall face radius (R on the sliding hammer of low noise 11 upper sides 15 ₂) bigger, therefore enter rolling when contacting, its entrance angle α when upper side 15 and roller 3 ₃Less, impulsive force little than in the prior art, (1) has reduced impact noise thus, (2) rotational velocity of roller 3 on sliding hammer 11 direction of rotation reduces: contact longitudinal midline 17 on the process upper side 15 when roller 3 and sliding hammer 11 roll, when contacting with inclined-plane 16 suddenly, make rolling post 3 be subjected to bigger and an original direction of motion opposite effect power, thereby stop the rotation of roller 3.Less entrance angle α ₃With the comprehensive function on inclined-plane 16, the rotational velocity of roller 3 is reduced, thereby make the interior sliding hammer 11 of unit interval and the frequency of exposure of roller 3 increase, also be the increased frequency that forges of unit interval inner mold 5, therefore improved production efficiency; Meanwhile, because the rotational velocity of roller 3 reduces, roller 3 also can reduce with the frictional noise of fixed mount 2 and steel ring 1.The effect of second arc surface 21 and three-arc face 19 is in order to make sliding hammer 11 enter when contact with roller 3 and leave when contacting milder.

In the above-described embodiments, sliding hammer 11 can not be T-shaped also, and elongated.

Identical label is represented identical structure and parts in institute's drawings attached.

Claims

1, a kind of sliding hammer of low noise that is used for metal reducing equipment, comprise two with rotary main shaft on end face chute form fit, the beside of sliding-contact, a downside that contacts with the mould upper surface, and upper side that rolls and contact with roller, it is characterized in that, the horizontal air line distance of described upper side is the 25-32 millimeter, and described upper side is that a side at its longitudinal midline has an one side and described longitudinal midline overlapping, plane to become the arcwall face on the inclined-plane at 75 ° of angles with the perpendicular bisector of described upper side.

2, the sliding hammer of low noise according to claim 1 is characterized in that the radius of described arcwall face is the 40-45 millimeter, and the center of circle is on the perpendicular bisector of described upper side.

3, the sliding hammer of low noise according to claim 1, it is characterized in that, described arcwall face is included in described longitudinal midline opposite side, overlap with described longitudinal midline on one side, radius is the 40-45 millimeter, the center of circle is on the perpendicular bisector of described upper side, chord length is 8 millimeters first arc surface, be connected with the described first arc surface another side, second arc surface at the described upper side 30-35 millimeter of distance place on described upper side perpendicular bisector, the center of circle, and be connected with described inclined-plane another side, the three-arc face at the described upper side 30-35 millimeter of distance place on described upper side perpendicular bisector, the center of circle.