RU17192U1 - PUNCH DRILL - Google Patents

Abstract

1. Drill for a perforator containing an advance part, destroying the bit and the screw part, the advance part contains a pin with at least one cutting plate fixed therein, with leading and lateral edges protruding beyond the contours of the pin, the destruction bit contains at least , one step with at least three protrusions axisymmetrically located, each of the protrusions is equipped with a cutting plate, the front and side edges of which protrude beyond the contours of the protrusion, the screw part contains an interface to the end of the last stage wound rod of a screw, characterized in that between the projections there are samples ledges subsequent stage are oriented along the protrusions previous step and the beginning of the winding screw is spaced from the end of the last stage of breaking the bit a distance no less than 0.25 diameter last stage destructive dolota.2. The drill for a perforator according to claim 1, characterized in that the screw winding is made with a constant step, and the beginning of the screw winding is separated from the last step of the destructive bit by a distance not exceeding the step of the screw winding. 3. Drill for a perforator according to claim 1 or 2, characterized in that the samples are made through, passing through all stages of the destructive bit, and have a cylindrical surface. The drill for a drill according to claim 3, characterized in that the cylindrical surface of the samples is made with a constant radius in the cross section of a drill for a drill. Drill for a perforator according to claims 1 to 4, characterized in that the front part of the leading part pin is equipped with two axisymmetrically arranged ledges, each ledge has an edge formed at the intersection

Description

g about 5 1 g 7 "5

MF ESIB 10 / S6

DRILL FOR DRILL

The utility model relates to drilling tools with a rotary shock drive and can be used as a tool for construction and installation work / :.

The prior art drill bits for rotary hammers used for working with solid rocks and during construction and installation work. So, in the description of the invention to the USSR author's certificate EZZZZ Device for mechanized punching holes in stone walls, ШК Е21С 37/18, B25D 11/10, published in 195Eg. 1, describes a drill for a perforator containing an advanced part that destroys the bit and the screw part j leading part is equipped with a pin fixed in it. at least one cutting plate with protruding beyond the contours of the pin of the front and side edges of the hole, the destructive bit contains at least one step with axisymmetrically located at least three protrusions, each of the protrusions is equipped with a cutting plate, the front and side edges of which protrude beyond the contours of the protrusion, the screw part contains a rod conjugated with the end face of the last stage with screw winding.

The screw winding is adjacent to the end face of the last stage, which when working in stony rocks and solid material can lead to compaction of the crumb of the destroyed material and, as a result, increase the energy consumption for its transportation by the screw part and, consequently, to increase the required power for the drill for the drill, which is a disadvantage known from 1 drill for a perforator adopted

The technical problem to be solved is the reduction of energy consumption for the drill for a perforator. Achievable technical result is to reduce energy costs for transportation of crumbs of destroyed material when drilling E stone, concrete, brick, etc. 4

The essence of the utility model is as follows.

As in the closest analogue 11, the drill for a perforator contains a leading part that destroys the bit and the screw part, while the leading part contains a pin with at least one cutting plate fixed in it, with leading and lateral edges protruding beyond the contours of the pin, destroying the bit contains at least one step with at least three protrusions axisymmetrically located, each of the protrusions is equipped with a cutter, a plate with its front and side edges protruding beyond the contours of the protrusion, the screw part contains a rod with a screw spiral winding at the end of the last stage, but unlike the closest analogue, there are samples between the protrusions, the protrusions of the next stage are oriented along the protrusions of the previous stage, and the beginning of the screw winding is at least 0.25 times the diameter of the last bit from the end of the last stage steps of a destructive bit.

The drill for a perforator is characterized by the fact that the screw coiling is performed with a constant step, and the beginning of the screw coiling is distracted from the last step, its bits are not more than a distance. E11 Another step of the screw coiling.

for the closest analogue.

The drill for a perforator is characterized in that the samples are cut through, passing through all the stages of the destructive bit, and have a cylindrical surface.

The drill for a perforator is characterized in that the cylindrical surface of the samples is made with a constant radius in the cross section of the drill for a perforator.

The drill for a perforator is characterized by the fact that the front part of the lead of the leading part is equipped with two axisymmetrically located ledges, on each ledge there is an edge formed when the surface of the ledge intersects the side surface of the pin, the side of the ledge is parallel to the cutting inserts of the pin, and the rear side is perpendicular to the cutting 1-1 m insert } y1 pin.

The drill for a perforator is characterized in that the surface of each step on the pin from the edge of the step to the end of the pin is cylindrical.

The drill for a perforator is characterized in that the front part of the lead ahead of the chaoti and each step of the protrusions of the destructive bit is conical, with the same angle at the apex of the cone.

The drill for a perforator is characterized by the fact that the radius of the circumference described by the lateral edges of the cutting plates of the last stage is larger than the radius of the screw winding of the screw part, and the diameter of the rod of the screw winding is not less than the dishletra of the pin of the leading part.

The drill for a perforator is characterized in that the cutter plates fixed in the pin and in each protrusion are made with the same size 2u1i.

The usefulness of the utility model is illustrated by drawings. FIG. 1 is a side view of a drill-expander with two steps of a destructive bit.

In Fig. 2, a ra-cut AA is shown in Fig. On fig.o shows the section ± z-B on yjHr.i. FIG. 4 shows the equalizer B-to FIG. FIG. 5 shows a view G in FIG. FIG. 6 shows the equalizer DD in FIG. 5.

Drill for the punch is arranged as follows.

The drill for a perforator contains a leading part 1, destroying the bit and the screw part 3. The leading part 1 is equipped with a pin 4 with at least one cutting plate 5 fastened in it with sharpened front and side edges protruding beyond the contours of the pin 4. Destructive bit 2 may contain one step (not shown in Fig.) and more steps, for example, two steps (Fig. 1), each of which is made with axisymmetrically (relative to the axis of the drill for the perforator) located protrusions 6 and samples 7 between them, the corresponding height upy 6 of the previous, for example, the first stage 8 and the next, for example, the second stage 9 are oriented along one straight line (Fig. 1,5}, in each protrusion 6 is fixed a cutting plate 10 with sharpened front and side edges protruding beyond the contours of the protrusion 6. screw part y contains a rod 11 with 1x screw winding, the beginning of which is separated from the end face of the last, for example, second stage Y of the destructive bit by a distance L equal to at least 0.5 diameter of the idol of the last stage of the destructive bit E; Odol / 4% b. The rod 10 of the screw part 3 is associated with a tertiary of the latter, for example, the second step y. the rod 10 of the screw part a ends with a shank 13 for connection with an energy drive (not shown in FIG.), providing shock-rotational movement of the drill for the expander.

The front part of the pin 4 of the leading part 1 can be equipped with two axisymmetrically (relative to the axis of the drill for the perforator) ledges 14 with the side 15 and the back 16 surface, on each ledge 14 an edge 17 is formed (Fig. 1,4) located on the side surface of the pin 4. The surface of each step 14 on the pin 4 of the reamer from the cutting edge 17 to the rear surface 16 located at the end of the pin 4 can be cylindrical with a circle and another line at the base, or with a more complex, for example, conical, pyramidal surface, or and a surface with an arbitrary shape.

in a preferred embodiment, the drill for the perforator contains two stages (Fig. 1), each stage 8, 9 of the destructive bit S contains three protrusions 6, you are ahead of the pin 4; two cutting plates 5 fixed along the diameter of the pin 4 are fixed to it, part 1 inserts 10 on each protrusion of 6 steps 8, 9 are collapsible, its bits 2 are fixed along the corresponding protrusion 6 along a beam centered on the axis of the reamer and are located at an angle different from the cutting dams 5 mounted on the pin 4 of the leading part 1. When In this sample 7 are made through bubbled, prohodyashdmi through all stages 8, 9 and breaking the bit 2 are cylindrical poverhnoot which may vypolnyatoya with a constant radius in cross-section reamer or other cross-sectional contour (Figure 5), the pin 4 outstripping I / O li IX

In general, i is equipped with ledges 14 with a cylindrical surface from the cutting edge 17 to the rear surface 16 of the ledge 14 with the side surface 15 of the ledge 14 parallel to the cutting plates 5 and the rear surface 16 perpendicular to the cutting plates 5 (Fig. 4). The front part of the pin 4 of the leading part 1 and each stage 8, 9 of the protrusions 6 of the destructive bit 2 is made conical, with the same angle a. at the top of the cone. The screw winding IS is made with a constant step Зшн, the beginning of the screw winding is separated from the last step of the destructive bit by a distance L not exceeding the step of the screw winding: LСшн - Radius of the circumference Along the length .. described by the lateral edges of the plates of the second stage 9 (Fig. 5) more radius of Oshn / screw winding IS, and the diameter of the rod 11 of the screw part 3 is not less than the diameter dmx of the pin 4 of the leading part 1: Odol / E Oshn / 2, Oshn Osht- In addition, the cutting plates 5 and 10 are fixed in pin 4 and in each the protrusion 6 are made identical, for example, in the form of a straight carbonic trapezoid with two adjacent edges vatochennymi with an obtuse angle therebetween and a sharp angle at the base of the trapezoid bolschoy equal to half the angle (x conical surface at the vertex perednrE pin parts 4 and steps 8, 9 (Figl, 6).

The drill for a punch works as follows.

When the drill rotates for the rotary hammer, the pin

4 ahead of part 1 with cutting plates fixed in it

5 destroys the solid material (stone, concrete, brick, etc.) in which drilling is performed due to the high contact stress arising on the sharpened front and side breakers of the D plates when interacting with the material, the presence of steps 14 s

H.U.

9

the edges 17 on the pin 4 provides grinding and transportation of the crumbs of the processed material, which are cut after the destruction of the material by cutting means, for example, cutting plates 5, which helps to increase the productivity of the drill for

the first stage and the demolition bit 2 expands the well, destroying the material with cutting plates 2-li 10, fixed in the protrusion 6, causing cracks in the material during impacts and chipping of the material during rotation. The second stage 9 and subsequent stages (not shown in FIG.), Wedged by the cutting plates 10 fixed in the protrusions 6 and located along the protrusions 6 (and the cutting plates 10) of the previous, for example, first stage 8, into the cracks formed by the plates 10 of the first stage 8, or with a simultaneous impact of the cutting inserts 10 of the adjacent protrusions of 6 stages 8 and 9, contributes to the formation of trash in the processed material, which increases the destruction of the material while reducing the energy consumption for the actuator of the expander. due to the mismatch in the orientation of the cutting plates 5 fixed in the pin 4 and cutting of 1x plates 10 fixed in the protrusions / from 6 steps 8 and 9, the drill-extender is not jammed when drilling in a material with cracks and seams, for example, in masonry . The presence of three or more protrusions 6 ensures that, when the material is chipped, only part of the cutting 11X plates 10 of the protrusions 6 is simultaneously contacted with the material, which increases the contact stress in the cutting plates 10 and the processed material and contributes to the destruction of the material.

The formed crumb passes through the through samples 7 between the protrusions 6 and is removed by the screw part 3. In this case, due to the separation of the beginning of the screw winding 1c from the end of the last stage.

for example, the second stage 9 at a distance of Pdol / 4 С L and L Зшн when performing screw winding IS with a constant step Lшн, crumbing is prevented from crushing and energy costs for its destruction are reduced, which reduces energy costs for the operation of the screw part о and Оура for the punch as a whole.

The execution of the cutting plates 5 and 10 are the same (Fig. 1, 6) increases the manufacturability and maintainability of the drill for the perforator.

Sample 7 through, passing through all stages, for example, stages 8, 9 of a two-stage destructive bit S and giving their surface a cylindrical shape, for example, with a constant radius in the cross section of the drill-expander (FIG. 5), the surface of each step 14 of pin 4 from the cutter, its edges 17 to the rear surface 16 of the cylindrical side surfaces 15 of the ledges 14 parallel to the cutting plates 5, as well as the front part of the pin 4 of the leading part 1 and each step 8, 9 of the protrusions 6 of the destructive bit, with one The angle U at the apex of the cone increases the manufacturability of the drill for a perforator.

The implementation of the drill for a perforator with a radius of Odol / 2 described by the lateral edges of the cutters X of the last 10 plates, for example the second stage 9 with a larger radius of Osh / 2 of the screw winding 12 reduces the energy consumption for driving the drill for the drill in combination with a decrease in the friction forces of the side surface of the screw winding 12 with well walls (holes). At the same time, during operation, the screw winding 12 performs the function of guiding; to it, surfaces under vibration and drill vibrations for the punch, due to unevenness of the processed material. You,

- and - q filling the diameter dmH of the rod 11 of the screw part with a diameter of at least one pin 4 of the leading part 1 allows for the construction of an equal strength drill for a hammer drill. with the achievement of the claimed technical result, and when developing technical documentation for a drill for a perforator, no additional inventive orchestva.

Claims (9)

1. Drill for a perforator containing an advance part, destroying the bit and the screw part, the advance part contains a pin with at least one cutting plate fixed therein, with leading and lateral edges protruding beyond the contours of the pin, the destruction bit contains at least , one step with at least three protrusions axisymmetrically located, each of the protrusions is equipped with a cutting plate, the front and side edges of which protrude beyond the contours of the protrusion, the screw part contains an interface to the end of the last stage wound rod of a screw, characterized in that between the projections there are samples ledges subsequent stage are oriented along the protrusions previous step and the beginning of the winding screw is spaced from the end of the last stage of breaking the bit a distance no less than 0.25 diameter last stage damaging the bit.  2. The drill for a perforator according to claim 1, characterized in that the screw winding is made with a constant step, and the beginning of the screw winding is separated from the last step of the destructive bit by a distance not exceeding the step of the screw winding.  3. The drill for a perforator according to claim 1 or 2, characterized in that the samples are made through, passing through all stages of the destructive bit, and have a cylindrical surface.  4. The drill for a perforator according to claim 3, characterized in that the cylindrical surface of the samples is made with a constant radius in the cross section of the drill for a perforator.  5. A drill for a perforator according to claims 1 to 4, characterized in that the front part of the leading part pin is equipped with two axisymmetrically arranged ledges, on each ledge there is an edge formed when the ledge surface intersects with the side surface of the pin, the side of the ledge is parallel to the cutting plates of the pin and the back is perpendicular to the cutting inserts of the pin.  6. The drill for a perforator according to claim 5, characterized in that the surface of each step on the pin from the edge of the step to the end of the pin is cylindrical.  7. Drill for a perforator according to claims 1 to 6, characterized in that the front part of the pin of the leading part and each step of the protrusions of the destructive bit is conical, with the same angle at the apex of the cone.  8. A drill for a perforator according to claims 1 to 7, characterized in that the radius of the circle described by the lateral edges of the cutting inserts of the last stage is larger than the radius of the screw winding of the screw part, and the diameter of the screw rod is not less than the diameter of the pin of the leading part. 9. Drill for a perforator according to claims 1 to 8, characterized in that the cutting inserts fixed in the pin and in each protrusion are made with the same dimensions.