CN2230633Y - Punching mould for disc saw - Google Patents

Abstract

The utility model relates to a punching mould for disc saw blades, which is provided with two moulds. A first mould is provided with an upper mould and a lower mould. The middle of the upper mould and the lower mould are provided with concave blocks and grooves, wherein, the concave blocks are corresponding to the grooves. The lower mould is provided with a plurality of tip holes and slots which are outward extended from the tip holes. A convex column is arranged on the corresponding position of the upper mould. A second mould is provided with an upper mould and a lower mould. The upper mould and the lower mould are correspondingly provided with convex teeth. The convex teeth of the upper mould just form tooth pitch shape between two convex teeth of the lower mould. The number of the convex teeth of the upper and lower moulds can be half of that of the saw teeth of the disc saw blade. The tooth edges of both sides of each convex tooth of the lower mould is the active face and the tooth back of adjacent saw teeth of the disc saw blade. The washing procedure is divided into three sections. The impact force of the mould can be reduced; the mould is uneasy to damage; the saw blade has no burr; both the labor and the time can be saved; the cost can be decreased.

Description

A kind of punching out mould of circular saw bit

The utility model relates to a kind of cutter manufacturing of cutting the sawing machine or the saw cutting device of any kind of material.

In the cutting of circular saw bit extensive use timber, aluminum strip, iron plate, reinforcing bar etc., the manufacturing of circular saw bit mainly is to utilize mould that steel plate is dashed to be set as zigzag, does heat treatment again, and does the hardness that suits the requirements according to occupation mode and use object and handle.As shown in Figure 1, existing manufacture method is earlier iron plate dashing to be set as plectane and to establish the mesopore louvre in the plectane upper punch, then, again the round iron plate is placed one to have on the counterdie (21) identical with required sawtooth number, that is the sawtooth of this counterdie (211) shape and size be to design according to the shape of circular saw bit fully, and the sawtooth (221) on patrix (22) limit then just is tooth pitch (212) shape between the sawtooth of this counterdie.Utilize punch press that patrix is dashed downwards, can establish a circular saw bit (1) with mesopore (11) in round iron plate upper punch, again according to its thickness of this circular saw bit, by the sawtooth inner edge to the heat radiation ditch (16) of side plate heartcut one suitable length till the louvre, the cutting quantity of heat radiation ditch is decided according to the thickness of circular saw bit.This kind circular saw bit punching out mould is under long-term and continuous punching out, when following defective takes place, one, when upper and lower stamping is established sawtooth, because it is very big that the sawtooth end face of this counterdie faces the surge on two tooth limits, make the end of this sawtooth (211) very easily be undermined and subside that under the impact that continues, the sawtooth of establishing that dashes will be out of shape.Simultaneously, again because upper and lower mould is dashing when establishing, the direct punching press in this sawtooth (211) two edges is stressed very big, and the also restricted powerful punching press in the sawtooth of disk (13) both sides just can thrust and form sawtooth, because the sawtooth tip is very sharp-pointed, make the burr that sawtooth (13) can cause steel plate to subside downwards, the work that the saw blade that needs punching out is finished grinds burr, otherwise can influence the sharpness of saw blade.In addition, because the heat radiation ditch must cut one by one, not only difficulty is constructed, and very wastes man-hour, has increased manufacturing cost.

The purpose of this utility model is to provide a kind of dashing in three stages to establish, and sawtooth does not produce burr, and can reduce the mould consume, reduces the circular saw bit punching out mould of manufacturing cost.

The utility model comprises two secondary moulds, first mould sets up upper and lower mould separately, be provided with relative projection and groove in upper and lower mould central authorities, and on the off-centered concentric circles of counterdie, be provided with tip hole and by the outward extending groove in tip hole, be provided with projection at patrix with respect to counterdie tip hole and groove position; Second mould sets up upper and lower mould separately, upper and lower mould is provided with relative double wedge, the double wedge of patrix just is the tooth pitch shape between two double wedges of counterdie, the raised teeth number of upper and lower mould is half of the circular saw bit sawtooth number that need finish, wherein, the double wedge both sides tip edge of counterdie just is the sword face and the back of tooth of adjacent two sawtooth of circular saw bit sawtooth.

For the ease of the circular saw bit in different apertures is provided, can respectively establish groove in the upper and lower mould central authorities of first mould, respectively establish a removable movable block in the groove, movable block is provided with center projection or shrinkage pool.Can freely change in the groove that is fixed in the center like this, so that adapt to the not saw blade of isometrical mesopore.

For the ease of the location of the circular saw bit of different-thickness, on the off-centered concentric circles of the counterdie of second mould, be provided with the protruding tip that two rubber-likes can close for the tip hole tip of circular saw bit.

The utility model sets up the punching out process of saw blade separately three stages to be finished, reduce the impulsive force of mould, it is impaired that mould is difficult for, and the difficult steel plate that the sawtooth projecting part takes place of the saw blade of establishing that dashes subsides downwards and causes the phenomenon of burr, needn't grind burr again, therefore can save man-hour, reduce manufacturing cost.Simultaneously, be convenient to adapt to the saw blade processing of different apertures and different-thickness.

Figure l is existing circular saw bit punching out mould and saw blade schematic diagram.

Fig. 2 is first mould of the present utility model and saw blade schematic diagram.

Fig. 3 is second mould of the present utility model and saw blade schematic diagram.

Fig. 4 is for using the preparation flow chart of the utility model punching out saw blade.

Fig. 5 is for using the method for making schematic diagram of the utility model punching out saw blade.

Below by embodiment structure of the present utility model, use and advantage are elaborated.

The utility model is divided into first and second mould, utilizes two moulds to carry out triphasic stroke.First mould sees also Fig. 2, be divided into upper and lower mould (42) (41), wherein the central authorities at counterdie (41) establish a groove (411), appropriate location on the off-centered concentric circles line of counterdie be provided with circular hole (412) several, with 2 representatives, be outward extended with groove (413) among the figure by this circular hole (412).In addition, there is a movable block (43) can supply to insert in the groove (411) of counterdie, central authorities at this movable block (43) are provided with a circular hole (431), movable block can be changed according to the size of the designed saw blade mesopore of designer, so that the saw blade in different apertures to be provided, the central authorities of its patrix (42) also are provided with the groove (421) of replaceable movable block (44), and are provided with projection (422) on the circular hole of relative counterdie and groove position.Utilize dashing of upper and lower mould to establish, can have mesopore and tip hole with placing steel plate on the counterdie to dash to be made as, a disk of heat radiation ditch.

Referring to Fig. 3, second mould is also established upper and lower mould, wherein employed counterdie (31) designs its double wedge (311) according to half of the required saw blade number of teeth, make the facewidth of this each double wedge just be two tooth width of saw blade, promptly comprise the sawtooth (13) of two saw blades and tooth pitch (14) the summation width of contained folder thereof.In addition, be provided with a projection (313) that can supply the build-in saw blade to use in counterdie central authorities, reach at off-centered desired location and be provided with a main protruding tip (314), after so-called desired location also is about to a round iron plate and will place on the counterdie, with the normal place of this protruding tip (314) as main location, again in the protruding tip of this master etc. the circle line be provided with another secondary protruding tip (315), the two protruding tips all can be designed to movable, can have upper and lower flexible activity elasticity, do the usefulness of location with the saw blade that adapts to different-thickness.As for patrix (32) then is double wedge shape with respect to counterdie, is provided with the double wedge (321) identical shaped with the tooth pitch (312) of counterdie below a die holder.

The utility model in actual use, the phase I is used general punch press, earlier steel plate is washed into a disk (1) (as shown in Figure 4), and central authorities dash establish fixing hole (11) and first-class circle line upper punch establish tip hole (121) (122) several.Simultaneously, the desired location on disk extends towards establishing heat radiation ditch (16) from tip hole (121) (122) to the disk outer rim.Second stage is put in this disk (1) on the counterdie (31) of second mould, make the fixing hole (11) of disc centre be embedded in the projection (313) of counterdie, secondary work of establishing of dashing can be carried out in the protruding tip of the master of counterdie (314) in tip hole (121) on the disk then embedding tip.Disk (1) through dashing after establishing promptly forms the double wedge (15) identical as double wedge (311) shape of counterdie in its outer peripheral edges.Please examine the shape of this double wedge, it just is the dual-side shape of the saw blade two adjacent sawtooth after finishing in the future, Yi Bian be the back of tooth (151) of sawtooth, opposite side then is the sword face (152) of sawtooth.Because double wedge (311) area of counterdie is the width of two disk sawtooth, so, when bigger area supports the patrix punching press,, make this double wedge (311) mould be difficult for the power of being hit and damage by the strength of disk bottom surface indirect stroke.And, because during the downward punching press of patrix, concerning the sawtooth of circular saw bit, only be earlier at two adjacent sawtooth on one side (back of tooth or sword face) wash out the burr that subside so disk is subjected to be difficult for generation invar plate pressurized after the punching press downwards.Carry out the phase III dash establish before, need disk (1) by mentioning slightly on the counterdie, tip hole (121) the embedding tip that forwards disk to is on the secondary protruding tip (315) of counterdie, the represented person of dotted line is through being subjected to for the first time to dash the disk double wedge (15) after establishing among Fig. 5 at this moment, when it placed the double wedge (311) of counterdie to go up, the overlapping person of institute contained the width that covers two disk sawtooth.Then, can carry out dashing of phase III and establish, after under patrix, dashing, stay disk on the counterdie and be to dash and fall original opposite side (back of tooth or sword face) of establishing sawtooth that dashed, dash establish finish after, the circular saw bit that is taken off i.e. as shown in Figure 4 final stage.

The utility model mainly utilizes the triphasic process of establishing of dashing on the implementation, cooperates the planning of mould, and upper and lower mould is being dashed when establishing sawtooth, the double wedge of the counterdie power that can withstand shocks not only, and the double wedge of fragile counterdie not.More because sawtooth is partly done secondary towards establishing, each is dashed establish action only on one side towards the sawtooth of establishing circular saw bit, avoided the action of once dashing the projecting part of establishing sawtooth fully, this measure, make the steel plate of circular saw bit be subjected to dash when establishing, the burr phenomenon that the difficult steel plate that the sawtooth projecting part takes place subsides is downwards established the circular saw bit of finishing through overshoot and just needn't be ground burr in each sawtooth back, and reduces the loss percentage of mould.In addition, the phase I dash establish the mesopore and tip hole of disk in, can once dash and establish the heat radiation ditch at desired location, and dash in second, third stage and to establish utilizing tip hole to locate, can make the heat radiation ditch extend to the iner ledge place of sawtooth exactly, make the setting of heat radiation ditch not only convenient but also save time by tip hole.

Claims (3)

1. the punching out mould of a circular saw bit, if on, counterdie, on, counterdie is established sawtooth, it is characterized in that comprising two secondary moulds, first mould sets up separately, counterdie, last, counterdie central authorities are provided with relative projection and groove, on the off-centered concentric circles of counterdie, be provided with tip hole and by the outward extending groove in tip hole, be provided with projection at patrix with respect to counterdie tip hole and groove position, second mould sets up separately, counterdie, on, counterdie is provided with relative double wedge, the double wedge of patrix just is the tooth pitch shape between two double wedges of counterdie, on, the raised teeth number of counterdie is half of the circular saw bit sawtooth number that need finish, and wherein, the double wedge both sides tip edge of counterdie just is the sword face and the back of tooth of adjacent two sawtooth of circular saw bit sawtooth.

2. the punching out mould of circular saw bit as claimed in claim 1 is characterized in that respectively establishing groove in the upper and lower mould central authorities of first mould, respectively establishes a removable movable block in the groove, and movable block is provided with center projection or shrinkage pool.

3. the punching out mould of circular saw bit as claimed in claim 1 is characterized in that being provided with the protruding tip that two rubber-likes close for the tip hole tip of circular saw bits on the off-centered concentric circles of the counterdie of second mould.

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