CN213469878U - Screw tap convenient to dismantle and make up - Google Patents

Abstract

The utility model discloses a screw tap convenient to dismantle and combination relates to screw tap technical field, and the taper shank and the screw thread body for solving current screw tap are all made as an organic whole and form, consequently scrap the back in screw thread wearing and tearing, and the screw thread body can wholly scrap and wholly change with the taper shank to make the problem of scrapping cost too high and be not convenient for change. The thread cutting tool is characterized in that a thread body is arranged below the taper shank, a first semicircular rod is fixedly arranged on one side of the lower end face of the taper shank, a second semicircular rod is fixedly arranged on one side of the upper end face of the thread body, one side end face of the first semicircular rod is attached to one side end face of the second semicircular rod, a first square insertion block is fixedly arranged on the lower end face of the first semicircular rod, a second square insertion block is fixedly arranged on the upper end face of the second semicircular rod, a first insertion groove is formed in the other side of the upper end face of the thread body, and a second insertion groove is formed in the other side of the lower end face of the taper shank.

Description

Screw tap convenient to dismantle and make up

Technical Field

The utility model relates to a screw tap technical field specifically is a screw tap convenient to dismantle and combination.

Background

The screw tap is a cutter for processing internal threads, can be divided into spiral screw tap and straight-edged screw tap according to the shape, the screw tap generally comprises taper shank and screw thread body, and the screw tap is when daily use, the screw thread body can produce wearing and tearing owing to using, consequently wearing and tearing to certain degree after, can scrap the screw tap, and the screw tap is when the clamping, the chuck is when pressing from both sides tight taper shank, need keep the screw tap perpendicular, thereby make the screw tap can not rock when rotating, consequently the workman when the clamping screw tap, need adjust the screw tap and make the screw tap keep locking after the level.

The taper shank and the thread body of the existing screw tap are manufactured integrally, so that the thread body and the taper shank can be integrally scrapped and integrally replaced after the thread is worn and scrapped, and accordingly the scrapping cost is too high and the thread is inconvenient to replace; thus, the existing need is not met, and for this reason we propose a tap that is easy to disassemble and assemble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw tap convenient to dismantle and combination to the taper shank and the screw thread body of the current screw tap who proposes in solving above-mentioned background art all make as an organic whole and form, consequently scrap the back at screw thread wearing and tearing, screw thread body and taper shank can wholly scrap and whole change, thereby make the problem of scrapping the cost too high and be not convenient for change.

In order to achieve the above object, the utility model provides a following technical scheme: a screw tap convenient to disassemble and assemble comprises a taper shank, a screw thread body is arranged below the taper shank, a first semicircular rod is fixedly arranged on one side of the lower end face of the taper shank, a second semicircular rod is fixedly arranged on one side of the upper end face of the screw thread body, one side end face of the first semicircular rod is attached to one side end face of the second semicircular rod, a first square inserting block is fixedly arranged on the lower end face of the first semicircular rod, a second square inserting block is fixedly arranged on the upper end face of the second semicircular rod, a first inserting groove is formed in the other side of the upper end face of the screw thread body, a second inserting groove is formed in the other side of the lower end face of the taper shank, the first square inserting block and the second square inserting block are respectively inserted in the first inserting groove and the second inserting groove, and convex grooves are respectively formed in the opposite sides of the first semicircular rod and the second semicircular rod, and the convex grooves are respectively provided with three, the convex grooves on one side inside the first semicircular rod and the second semicircular rod are mutually communicated, and the positioning blocks are inserted inside the convex grooves.

Preferably, the fixed semicircle crown plate that is provided with of preceding terminal surface of locating piece, the rear end face of semicircle crown plate and the outer wall laminating of first semicircle pole and second semicircle pole, the diameter of semicircle crown plate is less than the diameter of screw thread body, the centre of a circle of first semicircle pole, second semicircle pole, taper shank and screw thread body all is in same vertical straight line.

Preferably, through holes are formed in the semicircular ring plate, the number of the through holes is four, threaded holes are formed in the front end faces of the first semicircular rod and the second semicircular rod respectively, the number of the threaded holes is two, the threaded holes are communicated with the through holes, fixing screws are inserted into the through holes, and one ends of the fixing screws are in threaded connection with the threaded holes.

Preferably, the first semicircular rod and the second semicircular rod form a cylinder with the same diameter as the taper shank after being attached.

Preferably, a countersunk hole is formed in the front end face of the through hole, and a nut of the fixing screw is located inside the countersunk hole.

Preferably, the outer wall of locating piece is laminated and sliding connection with the convex groove inner wall on first semicircle pole and the second semicircle pole respectively, the rear end face of locating piece is in same terminal surface with the rear end outer wall of first semicircle pole and second semicircle pole, first square plug-in connection piece and the square plug-in connection piece of second are laminated and sliding connection with the inner wall of first inserting groove and second inserting groove respectively, the material of taper shank, first square plug-in connection piece, the square plug-in connection piece of second, first semicircle pole, second semicircle pole and locating piece is mould steel quenching material.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with the taper shank, the first semicircular rod, the second semicircular rod, the screw tooth body, the first square inserting block, the second square inserting block, the first inserting groove, the second inserting groove, the convex groove and the positioning block, so that the taper shank and the screw tooth body can be mutually attached by the first semicircular rod and the second semicircular rod when in use, and the first square inserting block and the second square inserting block are respectively inserted in the first inserting groove and the second inserting groove, and then the positioning block is inserted in the convex groove for assembly, so that the taper shank and the screw tooth body can be divided into two parts and can be disassembled and assembled, therefore, when the screw tooth body is worn excessively and needs to be scrapped, the screw tooth body can be directly disassembled, and then the new screw tooth body is installed below the taper shank, thereby the taper shank and the chuck do not need to be disassembled, only need install the screw thread body and taper shank and just can continue tapping work, need not to need to carry out many times the screw tap and adjust in order to make the screw tap keep perpendicular when changing the screw tap to also make and scrap the back at the wearing and tearing of screw thread body, only need scrap the screw thread body alone, the taper shank can continue to use, thereby makes the cost of scrapping reduce, and when processing the screw tap, only need produce a large amount of screw thread bodies and a small amount of taper shank can, thereby reduce screw tap manufacturing cost.

2. By arranging the first square inserting block, the second square inserting block, the first inserting groove and the second inserting groove, when the taper shank and the thread tooth body are assembled, only the first semicircular rod and the second semicircular rod are required to be mutually attached, and then the first square inserting block and the second square inserting block are respectively inserted into the first inserting groove and the second inserting groove, so that when the taper shank rotates, the first square inserting block and the second square inserting block can play a role in fixing the taper shank and the thread tooth body, the taper shank can drive the thread tooth body to rotate, and by arranging the convex grooves and the positioning blocks, the space between the taper shank and the thread tooth body is reinforced through the three convex grooves and the positioning blocks, the anti-torsion performance between the taper shank and the thread tooth body is better, and when the taper shank rotates, because the thread tooth body generates overlarge resistance during tapping, thereby avoid first square plug-in block and the square plug-in block of second to make the taper shank can not drive the screw tooth body and rotate the tapping because the resistance is too big and the fracture to consolidate through three convex groove and locating piece, make three convex groove and locating piece can share the resistance that first square plug-in block and the square plug-in block of second received, make the taper shank can more stable drive the screw tooth body and rotate the tapping.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the side view of the structure of the taper shank separated from the thread body;

FIG. 3 is a schematic view of the connection structure of the taper shank and the thread tooth body of the present invention;

FIG. 4 is a schematic view of the enlarged structure of the part A of the present invention;

fig. 5 is a schematic bottom view of the taper shank and the first semicircular rod of the present invention;

fig. 6 is a schematic view of a top-down structure of the first and second semicircular rods of the present invention;

FIG. 7 is a schematic top view of the semicircular ring plate and the positioning block of the present invention;

in the figure: 1. a taper shank; 2. a screw tooth body; 3. a first semicircular rod; 4. a second semi-circular rod; 5. a first square plug-in block; 6. a second square plug-in block; 7. a first insertion groove; 8. a second insertion groove; 9. a convex groove; 10. positioning blocks; 11. a semicircular ring plate; 12. a through hole; 13. a threaded hole; 14. fixing screws; 15. and (4) countersinking.

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.

Referring to fig. 1-7, the present invention provides an embodiment: a screw tap convenient to disassemble and assemble comprises a taper shank 1, a screw thread body 2 is arranged below the taper shank 1, a first semicircular rod 3 is fixedly arranged on one side of the lower end face of the taper shank 1, a second semicircular rod 4 is fixedly arranged on one side of the upper end face of the screw thread body 2, one side end face of the first semicircular rod 3 is attached to one side end face of the second semicircular rod 4, a first square inserting block 5 is fixedly arranged on the lower end face of the first semicircular rod 3, a second square inserting block 6 is fixedly arranged on the upper end face of the second semicircular rod 4, a first inserting groove 7 is formed in the other side of the upper end face of the screw thread body 2, a second inserting groove 8 is formed in the other side of the lower end face of the taper shank 1, the first square inserting block 5 and the second square inserting block 6 are respectively inserted into the first inserting groove 7 and the second inserting groove 8, convex grooves 9 are respectively formed in the opposite sides of the first semicircular rod 3 and the second semicircular rod 4, and the convex groove 9 is provided with threely respectively, the convex groove 9 of the inside one side of first semicircle pole 3 and second semicircle pole 4 link up mutually, the inside grafting of convex groove 9 has locating piece 10, consolidate through three convex groove 9 and locating piece 10, make three convex groove 9 and locating piece 10 can share the resistance that first square grafting piece 5 and the square grafting piece 6 of second received because the tapping, make taper shank 1 can be more stable drive thread tooth body 2 rotate the tapping.

Further, a semicircular ring plate 11 is fixedly arranged on the front end face of the positioning block 10, the rear end face of the semicircular ring plate 11 is attached to the outer walls of the first semicircular rod 3 and the second semicircular rod 4, the diameter of the semicircular ring plate 11 is smaller than that of the screw thread body 2, by setting the diameter of the semicircular ring plate 11 to be smaller than that of the screw thread body 2, so that when tapping, the semi-circular ring plate 11 can also enter the inside of the tapping hole after the tapping body 2 enters the inside of the tapping hole, thereby the tapping depth is not influenced, the circle centers of the first semi-circular rod 3, the second semi-circular rod 4, the taper shank 1 and the screw tooth body 2 are all positioned on the same vertical and horizontal line, the circle centers of the first semicircular rod 3, the second semicircular rod 4, the taper shank 1 and the thread tooth body 2 are all arranged to be positioned on the same vertical and horizontal line, so that the tap body 2 and the taper shank 1 do not shake while rotating after the taper shank 1 and the tap body 2 are connected to each other.

Further, through-hole 12 has been seted up to semicircular plate 11's inside, and through-hole 12 is provided with four, and first semicircle pole 3 has seted up threaded hole 13 respectively with the preceding terminal surface of second semicircle pole 4, and threaded hole 13 is provided with two respectively, and threaded hole 13 has a perfect understanding each other with through-hole 12, and the inside of through-hole 12 is pegged graft and is had set screw 14, and set screw 14's one end and threaded hole 13 threaded connection, through setting up set screw 14 to can fix locating piece 10 in the inside of convex groove 9 through set screw 14.

Further, can form the cylinder with taper shank 1 isodiametric behind first semicircle pole 3 and the laminating of second semicircle pole 4, set up to the same with taper shank 1's diameter through the cylindrical diameter that forms behind first semicircle pole 3 and the laminating of second semicircle pole 4 to make behind the laminating of first semicircle pole 3 and second semicircle pole 4 can not influence taper shank 1 and enter into the inside of tapping hole because the diameter is too big, avoid influencing the tapping degree of depth.

Further, counter sink 15 has been seted up to the preceding terminal surface of through-hole 12, and the nut of fixed screw 14 is located the inside of counter sink 15, through setting up counter sink 15 for the nut of fixed screw 14 can be located the inside of counter sink 15, thereby avoids the nut to be located the outside of semicircle ring board 11 and increases the diameter of semicircle ring board 11, leads to semicircle ring board 11 to influence the tapping degree of depth.

Further, the outer wall of the positioning block 10 is respectively attached to and slidably connected with the inner walls of the convex grooves 9 on the first semicircular rod 3 and the second semicircular rod 4, the rear end face of the positioning block 10 is located at the same end face as the outer walls of the rear ends of the first semicircular rod 3 and the second semicircular rod 4, the first square insertion block 5 and the second square insertion block 6 are respectively attached to and slidably connected with the inner walls of the first insertion groove 7 and the second insertion groove 8, the taper shank 1, the first square insertion block 5, the second square insertion block 6, the first semicircular rod 3, the second semicircular rod 4 and the positioning block 10 are made of die steel quenching materials, the taper shank 1, the first square insertion block 5, the second square insertion block 6, the first semicircular rod 3, the second semicircular rod 4 and the positioning block 10 are made of the die steel quenching materials, and therefore the taper shank 1, the first square insertion block 5, the second square insertion block 5 and the positioning block 10 are made of the die steel quenching materials, The toughness of the second square inserting block 6, the first semicircular rod 3, the second semicircular rod 4 and the positioning block 10 is increased while the hardness is increased, and the taper shank 1, the first square inserting block 5, the second square inserting block 6, the first semicircular rod 3, the second semicircular rod 4 and the positioning block 10 are prevented from being too brittle, so that the fracture is easy to occur.

The working principle is as follows: when the taper shank 1 and the thread tooth body 2 are assembled, one side end faces of the first semicircular rod 3 and the second semicircular rod 4 are attached to each other, so that a cylinder with the same diameter as that of the taper shank 1 can be formed after the first semicircular rod 3 and the second semicircular rod 4 are attached to each other, the first square insertion block 5 and the second square insertion block 6 are respectively inserted into the first insertion groove 7 and the second insertion groove 8, the convex grooves 9 on the opposite sides of the first semicircular rod 3 and the second semicircular rod 4 are communicated with each other, the convex grooves 9 on the first semicircular rod 3 and the second semicircular rod 4 are communicated with each other to form I-shaped grooves, the three positioning blocks 10 are respectively inserted into the convex grooves 9 on the first semicircular rod 3 and the second semicircular rod 4 through the semicircular ring plate 11, the rear end face of the semicircular ring plate 11 is attached to the outer wall formed by the attachment of the first semicircular rod 3 and the second semicircular rod 4, then, a fixing screw 14 is inserted into the through hole 12, a semicircular ring plate 11 is fixed on the outer walls of the first semicircular rod 3 and the second semicircular rod 4 through the fixing screw 14 and a threaded hole 13, so that a positioning block 10 is fixedly inserted into the convex groove 9, the first semicircular rod 3 and the second semicircular rod 4 cannot be separated up and down through the shapes of the positioning block 10 and the convex groove 9, and the first semicircular rod 3 and the second semicircular rod 4 cannot be separated towards two sides through the shapes and the matching of the positioning block 10 and the convex groove 9 and the matching of the first square insertion block 5, the second square insertion block 6, the first insertion groove 7 and the second insertion groove 8, so that the taper shank 1 cannot be separated from the thread body 2 when the taper shank 1 drives the thread body 2 to perform rotary tapping, the taper shank 1 cannot be separated from the thread body 2, when the taper shank 1 rotates, because the first square insertion block 5 and the second square insertion block 6 are respectively inserted into the first insertion groove 7 and the second insertion groove 8, therefore, the first square inserting block 5, the second square inserting block 6, the positioning block 10 and the convex groove 9 enable the taper shank 1 to drive the screw tooth body 2 to rotate, the three convex grooves 9 and the positioning block 10 are used for reinforcing, the three convex grooves 9 and the positioning block 10 can share the resistance of the first square inserting block 5 and the second square inserting block 6 caused by tapping, the taper shank 1 can more stably drive the screw tooth body 2 to rotate and tap, and after the first square inserting block 5 and the second square inserting block 6 are respectively inserted into the first inserting groove 7 and the second inserting groove 8, the first square inserting block 5 and the second square inserting block 6, the first inserting groove 7 and the second inserting groove 8 can play a role in positioning, so that the circle centers of the first semicircular rod 3, the second semicircular rod 4, the taper shank 1 and the screw tooth body 2 are all in the same vertical and horizontal line, therefore, after the taper shank 1 is fixed and vertical to the chuck, the screw thread body 2 and the taper shank 1 cannot shake when rotating.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A tap convenient to dismantle and make up, includes taper shank (1), its characterized in that: a screw thread body (2) is arranged below the taper shank (1), a first semicircular rod (3) is fixedly arranged on one side of the lower end face of the taper shank (1), a second semicircular rod (4) is fixedly arranged on one side of the upper end face of the screw thread body (2), one side end face of the first semicircular rod (3) is attached to one side end face of the second semicircular rod (4), a first square insertion block (5) is fixedly arranged on the lower end face of the first semicircular rod (3), a second square insertion block (6) is fixedly arranged on the upper end face of the second semicircular rod (4), a first insertion groove (7) is formed in the other side of the upper end face of the screw thread body (2), a second insertion groove (8) is formed in the other side of the lower end face of the taper shank (1), and the first square insertion block (5) and the second square insertion block (6) are respectively inserted into the first insertion groove (7) and the second insertion groove (8), convex grooves (9) are formed in the opposite sides of the first semicircular rod (3) and the second semicircular rod (4), the number of the convex grooves (9) is three, the convex grooves (9) in the inner sides of the first semicircular rod (3) and the second semicircular rod (4) are communicated with each other, and positioning blocks (10) are inserted into the convex grooves (9).

2. A tap to facilitate disassembly and assembly as in claim 1, wherein: the fixed semicircle crown plate (11) that is provided with of preceding terminal surface of locating piece (10), the rear end face of semicircle crown plate (11) and the outer wall laminating of first semicircle pole (3) and second semicircle pole (4), the diameter of semicircle crown plate (11) is less than the diameter of screw tooth body (2), the centre of a circle of first semicircle pole (3), second semicircle pole (4), taper shank (1) and screw tooth body (2) all is in same vertical line.

3. A tap to facilitate disassembly and assembly as defined in claim 2, wherein: through-holes (12) are formed in the semicircular ring plate (11), four through-holes (12) are formed in the semicircular ring plate, threaded holes (13) are formed in the front end faces of the first semicircular rod (3) and the second semicircular rod (4) respectively, two threaded holes (13) are formed in the threaded holes (13), the threaded holes (13) are communicated with the through-holes (12), fixing screws (14) are inserted into the through-holes (12), and one ends of the fixing screws (14) are in threaded connection with the threaded holes (13).

4. A tap to facilitate disassembly and assembly as in claim 1, wherein: the first semicircular rod (3) and the second semicircular rod (4) can form a cylinder with the same diameter as the taper shank (1) after being attached.

5. A tap to facilitate disassembly and assembly as claimed in claim 3, wherein: the front end face of the through hole (12) is provided with a counter bore (15), and a nut of the fixing screw (14) is located inside the counter bore (15).

6. A tap to facilitate disassembly and assembly as in claim 1, wherein: the outer wall of locating piece (10) is respectively with convex groove (9) inner wall laminating and sliding connection on first semicircle pole (3) and second semicircle pole (4), the rear end face of locating piece (10) is in same terminal surface with the rear end outer wall of first semicircle pole (3) and second semicircle pole (4), first square grafting piece (5) and second square grafting piece (6) are respectively with the inner wall laminating and sliding connection of first grafting groove (7) and second grafting groove (8), taper shank (1), first square grafting piece (5), the square grafting piece (6) of second, first semicircle pole (3), second semicircle pole (4) and locating piece (10) the material of die steel quenching material.

Images