CN211135658U

CN211135658U - Hole digger

Info

Publication number: CN211135658U
Application number: CN201922114942.3U
Authority: CN
Inventors: 赵杰; 罗华萍
Original assignee: Zhuji Ruibaote Hardware Tools Co ltd
Current assignee: Zhuji Ruibaote Hardware Tools Co ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-07-31
Anticipated expiration: 2029-11-30

Abstract

The utility model discloses a hole digger relates to trompil instrument technical field, aims at solving the size that current hole digger passes through the scale mark and adjusts the cutter body, needs manual alignment scale and constantly fine setting, and this kind of regulative mode needs to adjust many times, leads to the slow problem of governing speed, and its technical scheme main points are: the epaxial location that is equipped with of location bores, location axle both sides are equipped with the regulation pole of symmetric distribution, it is equipped with the location tooth that a plurality of equidistance distribute to adjust the pole top surface, be equipped with the knife rest on the regulation pole, be equipped with the adjustment tank on the knife rest, adjust pole sliding connection in the adjustment tank, the spout has been seted up to the adjustment tank top surface, sliding connection has the regulating block in the spout, the regulating block is equipped with the regulation tooth that a plurality of equidistance distribute towards adjusting pole one side, the first screw hole that switches on is seted up to the knife rest top surface. The utility model discloses a set up regulation tooth and location tooth, can play the effect of convenient quick adjustment hole digger trompil size.

Description

Hole digger

Technical Field

The utility model relates to a trompil instrument field, more specifically says that it relates to a hole digger.

Background

The hole digger is installed on a common electric drill and can conveniently cut round holes on any curved surfaces such as planes and spherical surfaces of various plates.

The Chinese patent with publication number CN206882867U discloses a hole digger, which has the technical key points that: including drilling rod and cutter body, be provided with the sword groove of crossing, drillstock and the drill bit that are used for connecting on the drilling rod, cross the sword groove and offer in the drilling rod below, cross the sword groove side and offer tight set screw, threaded connection has tight set bolt on the tight set screw, the drillstock welds in the drilling rod top, the drill bit welds in the drilling rod bottom, the cutter body is inserted and is located sword inslot, is provided with chip groove, scale mark and tight set groove on the cutter body, the chip groove is seted up in the cutter body below, the scale mark carving is in the cutter body top, tight set groove is seted up in the scale mark bottom.

The problem of can't freely adjust the hole digger size according to the size of trompil has been solved in the above-mentioned scheme, but the size of cutter body is adjusted through the scale mark to current hole digger, needs manual alignment scale and constantly finely tune, and this kind of regulative mode needs to adjust many times, leads to regulating speed slow.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel adjustable hole digger for solving the problems, which is mainly used for quickly adjusting the position of a tool rest.

The above technical purpose of the present invention can be achieved by the following technical solutions: a hole digger comprises a positioning shaft, wherein a positioning drill is arranged on the positioning shaft, adjusting rods which are symmetrically distributed are arranged on two sides of the positioning shaft, positioning teeth which are distributed in a plurality of equal distances are arranged on the top surface of each adjusting rod, the cross sections of the positioning teeth are the same as the cross sections of tooth grooves between two adjacent positioning teeth, a knife rest is arranged on each adjusting rod, an adjusting groove is arranged on each knife rest, each adjusting rod is connected in each adjusting groove in a sliding mode, a sliding groove is formed in the top surface of each adjusting groove, an adjusting block is connected in each sliding groove in a sliding mode, a plurality of adjusting teeth which are distributed in equal distances are arranged on one side of each adjusting block, the cross sections of the adjusting teeth are the same as the cross sections of tooth grooves between two adjacent adjusting teeth, the adjacent tooth grooves between the adjusting teeth and the adjacent positioning teeth are the same, the, install the spring in the holding tank, the spring respectively with the top surface of holding tank and the top surface looks butt of regulating block, the first screw hole that switches on with the holding tank is seted up to the knife rest top surface, be equipped with first fixing bolt on the first screw hole, first fixing bolt pass first screw hole and spring and with the top surface butt of regulating block, fixedly connected with trompil sword on the knife rest.

Through adopting above-mentioned technical scheme, when needs adjust the hole digger trompil size, unscrew first fixing bolt until leaving the spout, then hold the knife rest and adjust the position that the knife rest is located on the regulation pole according to the demand, make the prong of adjusting the tooth remove along the tooth's socket of location tooth, the spring receives the pressure of regulating block and produces elastic deformation, when adjusting to during the position, release the knife rest, the spring produces elastic restoring force and has produced a thrust towards adjusting the pole to the regulating block, can let the regulation tooth slide in the tooth's socket of location tooth, produced a prepositioning effect, then screw up first fixing bolt until pushing up regulating block top surface for adjust tooth and location tooth intermeshing, realized the accurate quick location of knife rest.

The utility model discloses further set up to: the positioning shaft is characterized in that a through groove is formed in the central axis of the positioning shaft, a connecting rod is arranged on the positioning drill, the connecting rod is connected in the through groove in a sliding mode, a second threaded hole is formed in the positioning shaft, a second fixing bolt is connected to the second threaded hole in an internal thread mode, and the second fixing bolt is used for penetrating through the second threaded hole and tightly pushing the connecting rod.

Through adopting above-mentioned technical scheme, screw up first fixing bolt and until the tight regulating block top surface in top, realized the convenient quick fixed of location brill.

The utility model discloses further set up to: the cutter frame is provided with a cutter groove on one side facing the positioning shaft, the cutter frame is provided with a third threaded hole communicated with the cutter groove, and a third fixing bolt is connected with the third threaded hole in an internal thread mode and used for fixing the hole opening cutter.

Through adopting above-mentioned technical scheme, put into the sword groove with the handle of a knife of trompil sword, made things convenient for putting into of trompil sword on the one hand, on the other hand can produce prepositioned effect to the trompil sword, then screwed up third fixing bolt and realized fixing to the trompil sword.

The utility model discloses further set up to: the top surface of the cutter groove is provided with a clamping groove, a pressing plate is connected in the clamping groove, and the pressing plate is provided with a through hole.

By adopting the technical scheme, the pressing plate presses and holds the cutter handle of the tapping cutter, and then the third fixing bolt is screwed, so that the pressing and holding area is increased, and the tapping cutter can be stably fixed on the cutter frame.

The utility model discloses further set up to: and the two ends of the pressing plate are provided with pressing edges.

Through adopting above-mentioned technical scheme, through setting up the blank holder, the blank holder pressfitting is at knife rest both sides wall for the clamp plate must better push down the trompil sword.

The utility model discloses further set up to: the cross sections of the through grooves and the connecting rods are hexagonal.

Through adopting above-mentioned technical scheme, can let the location bore can only slide in the location axle can not rotate.

The utility model discloses further set up to: and the first fixing bolt is provided with a holding part extending outwards.

Through adopting above-mentioned technical scheme, through setting up the portion of holding, can let first fixing bolt's rotation become very convenient.

To sum up, the utility model discloses following beneficial effect has:

when the tapping size of the tapper needs to be adjusted, the first fixing bolt is unscrewed until the first fixing bolt leaves the sliding groove, then the cutter frame is held, the position of the cutter frame on the adjusting rod is adjusted according to requirements, the tooth tip of the adjusting tooth moves along the tooth groove of the positioning tooth, the spring generates elastic deformation under the pressure of the adjusting block, the cutter frame is released when the position is adjusted, the spring generates elastic restoring force to generate pushing force towards the adjusting rod on the adjusting block, the adjusting tooth can slide into the tooth groove of the positioning tooth, a pre-positioning effect is generated, then the first fixing bolt is screwed until the top surface of the adjusting block is tightly pressed, the adjusting tooth and the positioning tooth are meshed with each other, accurate and quick positioning of the cutter frame is achieved, and meanwhile the service life of the tapper is prolonged.

Drawings

Fig. 1 is a schematic structural view of a hole opener according to the present invention;

fig. 2 is a schematic structural view of a tool holder in a hole opener according to the present invention;

fig. 3 is an exploded view of fig. 2 of a hole opener of the present invention;

FIG. 4 is a cross-sectional view of a tool holder in a hole opener of the present invention;

fig. 5 is a partial exploded view of a hole opener according to the present invention.

Reference numerals: 1. positioning the shaft; 2. positioning a drill; 3. adjusting a rod; 4. positioning teeth; 5. a tool holder; 6. an adjustment groove; 7. a chute; 8. an adjusting block; 9. adjusting teeth; 10. accommodating grooves; 11. a spring; 12. a first threaded hole; 13. a first fixing bolt; 14. a tapping knife; 15. a through groove; 16. a connecting rod; 17. a second threaded hole; 18. a second fixing bolt; 19. a cutter groove; 20. a third threaded hole; 21. a third fixing bolt; 22. a card slot; 23. pressing a plate; 24. a through hole; 25. pressing edges; 26. a holding part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, a hole opener comprises a positioning shaft 1, a through groove 15 with a hexagonal cross section is formed on a central axis of the positioning shaft 1, a positioning drill 2 is arranged in the through groove 15, a connecting rod 16 with a hexagonal cross section is welded on the positioning drill 2, the connecting rod 16 is connected in the through groove 15 in a sliding manner, a second threaded hole 17 is formed on the positioning shaft 1, a second fixing bolt 18 is connected in the second threaded hole 17 in an internal thread manner, the second fixing bolt 18 is used for penetrating through the second threaded hole 17 and tightly pushing against the connecting rod 16, adjusting rods 3 which are symmetrically distributed are welded on two sides of the positioning shaft 1, a plurality of positioning teeth 4 which are distributed at equal intervals are integrally formed on the top surface of each adjusting rod 3, the cross section of each positioning tooth 4 is the same as the cross section of a tooth socket between two adjacent positioning teeth 4, a knife rest 5 is arranged on each adjusting rod, the top surface of the adjusting groove 6 is provided with a sliding groove 7, the sliding groove 7 is internally connected with an adjusting block 8 in a sliding way, the adjusting block 8 is integrally formed with a plurality of adjusting teeth 9 distributed at equal intervals towards one side of the adjusting rod 3, the cross section of each adjusting tooth 9 is the same as the cross section of a tooth groove between two adjacent adjusting teeth 9, the tooth grooves between the adjacent adjusting teeth 9 and the adjacent positioning teeth 4 are the same, the adjusting teeth 9 are clamped into the tooth grooves of the adjusting rod 3 to adjust the position of the knife rest 5 on the adjusting rod 3, the top surface of the sliding groove 7 is provided with an accommodating groove 10, a spring 11 is installed in the accommodating groove 10, the spring 11 is respectively abutted against the top surface of the accommodating groove 10 and the top surface of the adjusting block 8, the top surface of the knife rest 5 is provided with a first threaded hole 12 communicated with the accommodating groove 10, the first threaded hole 12 is in threaded connection with a first fixing bolt 13, an outward extending holding part 26 is welded on, fixedly connected with trompil sword 14 on the knife rest 5, and knife rest 5 has seted up sword groove 19 towards location axle 1 one side, draw-in groove 22 has been seted up to sword groove 19 top surface, draw-in groove 22 in-connection has clamp plate 23, clamp plate 23 both ends integrated into one piece has blank holder 25, and set up through-hole 24 on the clamp plate 23, set up the third screw hole 20 that switches on with sword groove 19 on the knife rest 5, be equipped with third fixing bolt 21 in the third screw hole 20, third fixing bolt 21 passes through-hole 24, trompil sword 14 and threaded connection are used for fixed trompil sword 14 in the third screw hole 20.

When preparing to open the hole, firstly, the connecting rod 16 with the hexagonal cross section is put into the through groove 15 with the hexagonal cross section, so that the positioning drill 2 can not rotate on the positioning shaft 1, then the second fixing bolt 18 is screwed until the connecting rod 16 is tightly pressed, the positioning drill 2 is conveniently and quickly fixed, then the cutter handle of the opening cutter 14 is put into the cutter groove 19, on one hand, the opening cutter 14 is conveniently put in, on the other hand, the pre-positioning effect on the opening cutter 14 can be generated, then the pressing plate 23 is put into the clamping groove 22, the pressing plate 23 presses and holds the cutter handle of the opening cutter 14, so that the opening cutter 14 can be stably fixed on the cutter frame 5, meanwhile, the pressing edges 25 are pressed on two side walls of the cutter frame 5, so that the pressing plate 23 can be more tightly attached on the cutter frame 5, the opening cutter 14 can be more stably fixed on the cutter frame 5, then the third fixing bolt 21 passes through the through hole 24, the opening cutter 14 and is in the, the complete fixation of the tapping knife 14 is realized, the tapping knife 14 is stably fixed on the knife rest 5, the rigidity of the tapping knife 14 and the knife rest 5 is increased, then the tapping size of the tapper is adjusted, the holding part 26 extending outwards is held, the first fixing bolt 13 is unscrewed until the first fixing bolt is separated from the sliding chute 7, the adjustment of the first fixing bolt 13 is facilitated, then the knife rest 5 is held, the position of the knife rest 5 on the adjusting rod 3 is adjusted according to requirements, the tooth tip of the adjusting tooth 9 moves along the tooth socket of the positioning tooth 4, the adjusting block 8 is driven to slide up and down along the sliding chute 7, the spring 11 generates elastic deformation under the pressure of the adjusting block 8, when the approximate position is adjusted, the knife rest 5 is released, the spring 11 generates elastic restoring force to generate a pushing force towards the adjusting rod 3 on the adjusting block 8, the adjusting tooth 9 can slide into the tooth socket of the positioning tooth 4, and a pre-positioning effect is generated, the regulation of the size of the hole cutter is facilitated, then the first fixing bolt 13 is screwed up until the top surface of the adjusting block 8 is tightly pressed, so that the adjusting teeth 9 and the positioning teeth 4 are meshed with each other, and the quick and accurate positioning of the knife rest 5 is realized.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A hole cutter comprising a positioning shaft (1), characterized in that: the locating drill is characterized in that a locating drill (2) is arranged on the locating shaft (1), two sides of the locating shaft (1) are provided with symmetrically distributed adjusting rods (3), the top surface of each adjusting rod (3) is provided with a plurality of locating teeth (4) distributed in equal intervals, the cross section of each locating tooth (4) is identical to the cross section of a tooth groove between two adjacent locating teeth (4), a knife rest (5) is arranged on each adjusting rod (3), an adjusting groove (6) is arranged on each knife rest (5), the adjusting rods (3) are connected in the adjusting grooves (6) in a sliding mode, a sliding groove (7) is formed in the top surface of each adjusting groove (6), an adjusting block (8) is connected in the sliding grooves (7) in a sliding mode, a plurality of adjusting teeth (9) distributed in equal intervals are arranged on one side of each adjusting rod (3) towards each adjusting block (8), the cross section of, the tooth spaces between the adjacent adjusting teeth (9) and the adjacent positioning teeth (4) are the same, the adjusting teeth (9) are clamped into the tooth grooves of the adjusting rod (3) to adjust the position of the tool rest (5) on the adjusting rod (3), the top surface of the sliding chute (7) is provided with a holding groove (10), a spring (11) is arranged in the holding groove (10), the spring (11) is respectively abutted against the top surface of the accommodating groove (10) and the top surface of the adjusting block (8), the top surface of the knife rest (5) is provided with a first threaded hole (12) communicated with the accommodating groove (10), be equipped with first fixing bolt (13) on first screw hole (12), first fixing bolt (13) pass first screw hole (12) and spring (11) and with the top surface butt of regulating block (8), fixedly connected with trompil sword (14) on knife rest (5).

2. A hole cutter as defined in claim 1, wherein: the positioning device is characterized in that a through groove (15) is formed in the central axis of the positioning shaft (1), a connecting rod (16) is arranged on the positioning drill (2), the connecting rod (16) is connected into the through groove (15) in a sliding mode, a second threaded hole (17) is formed in the positioning shaft (1), a second fixing bolt (18) is connected to the inner thread of the second threaded hole (17), and the second fixing bolt (18) is used for penetrating through the second threaded hole (17) and tightly pushing the connecting rod (16).

3. A hole cutter as defined in claim 1, wherein: the cutter frame (5) is provided with a cutter groove (19) towards one side of the positioning shaft (1), the cutter frame (5) is provided with a third threaded hole (20) communicated with the cutter groove (19), and a third fixing bolt (21) is connected with the third threaded hole (20) in an internal thread mode and used for fixing the tapping cutter (14).

4. A hole cutter as defined in claim 3, wherein: the top surface of the cutter groove (19) is provided with a clamping groove (22), a pressing plate (23) is connected in the clamping groove (22), and the pressing plate (23) is provided with a through hole (24).

5. The hole cutter according to claim 4, wherein: and two ends of the pressing plate (23) are provided with pressing edges (25).

6. A hole cutter as defined in claim 2, wherein: the sections of the through groove (15) and the connecting rod (16) are hexagonal.

7. A hole cutter as defined in claim 1, wherein: and a holding part (26) extending outwards is arranged on the first fixing bolt (13).