CN114160827A

CN114160827A - Shaping T-shaped cutter for one-step shaping and processing of reverse special-shaped groove

Info

Publication number: CN114160827A
Application number: CN202111539488.1A
Authority: CN
Inventors: 熊轶民; 黄丹平; 余苏妍; 魏小强
Original assignee: Jiangxi Jiehao Carbide Tool Co ltd
Current assignee: Jiangxi Jiehao Carbide Tool Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-03-11

Abstract

The invention relates to the technical field of machining tools, and discloses a forming T-shaped cutter for one-step forming machining of a reverse special-shaped groove, which solves the problems that the existing cutter needs to replace the cutter to machine the special-shaped groove, the positioning error of the cutting cutter is increased, the machining precision is influenced, a cutting surface cannot be formed at one time, the machining time is long, the cutter loss is serious, and frequent cutter changing is needed; the invention can replace the cutter head of the cutter, and the local replacement is favorable for reducing the cost.

Description

Shaping T-shaped cutter for one-step shaping and processing of reverse special-shaped groove

Technical Field

The invention belongs to the technical field of machining tools, and particularly relates to a T-shaped forming tool for one-step forming machining of a reverse special-shaped groove.

Background

The traditional general T-shaped forming groove for grooving is a V-shaped groove or a T-shaped straight groove (as shown in figure 11), and is used for machining a 3C mobile phone frame structural member, the T-shaped reverse special-shaped groove is machined, the groove is not formed in a general grooving mode, only feed can be performed from the side surface, feed can not be performed perpendicular to a workpiece, multiple types of cutting tools are required to be adopted for cutting machining in multiple processes, in the machining process, the cutter replacement can increase the positioning error of the cutting tools, the machining precision is influenced, the cutting surface cannot be formed at one time, a tool receiving trace can be formed between two cutting surfaces, the roughness precision of the inner wall or the bottom wall of the groove is influenced, the machining consumes long time, and the tool loss is serious, and frequent tool changing is required.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the forming T-shaped cutter for one-step forming machining of the reverse special-shaped groove, and the problems that the existing cutter needs to be replaced to process the special-shaped groove, the positioning error of a cutting tool is increased, the machining precision is influenced, a cutting surface cannot be formed at one time, the machining time is long, the cutter loss is serious, and the cutter needs to be frequently replaced are effectively solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a reverse dysmorphism groove one shot forming processing is with shaping T type sword, includes dead lever, cutter arbor and tool bit, dead lever one end is connected with the cutter arbor, and cutter arbor one end is connected with the tool bit, and the tool bit comprises the cutting teeth, and the cutting teeth is three, three cutting teeth week evenly distributed in the cutter arbor outer end.

Preferably, the diameter D of the cutting edge of the cutter head is 2.4 mm; the blade length L is 0.85 mm; the blade length L1 at the inner groove is 0.45 mm; the cutting depth L2 at the inner groove is 0.5 mm; the neck diameter D1 is 0.7 mm; the radius value R1 of the tool nose is 0.1 mm; the value of the outer radius R2 of the inner groove is 0.15 mm; the inner radius value R3 of the inner groove is 0.15 mm; the angle A of the inner groove is 90 degrees; the slotting angle a is 90 degrees; the resulting width W1 of the relief angle is 0.1 mm; the total edge width W is 0.8 mm; the rear angles a1 and a2 are 12 ° and 25 °, respectively.

Preferably, the middle part of one end of the fixing rod is connected with a sleeve, the fixing rod is close to the inside of one end of the sleeve and is provided with a rotating groove, the inside of the sleeve is rotatably connected with a screw rod through a bearing, one end of the screw rod extends to the inside of the rotating groove and is connected with a rotating block, and a locking nut is sleeved on the rotating block below and located on the outer thread of the screw rod.

Preferably, the opening has been seted up to sleeve outer end cross symmetry, and the movable block has been cup jointed to screw rod outer end screw thread, and the movable block outer end rotates and is connected with the connecting rod, and the connecting rod is located inside the opening, and connecting rod one end rotates and is connected with the anchorage bar, and anchorage bar one end rotates with the dead lever terminal surface and is connected.

Preferably, one end of the fastening rod is uniformly connected with first engaging teeth, the lower end of the fixing rod is connected with connecting blocks in a crossed and symmetrical mode, and the fastening rod is rotatably connected with the connecting blocks.

Preferably, one end of the fixing rod is connected with a limiting ring, a fixing threaded sleeve is sleeved outside the limiting ring, anti-skid threads are formed in the outer end of the fixing threaded sleeve, and the anti-skid threads are vertical.

Preferably, the cutter bar one end is seted up the constant head tank, and the chucking groove is seted up to constant head tank inner wall cross symmetry, and the chucking inslot wall evenly is connected with the second and stings the tooth.

Preferably, the outer end of the cutter bar is provided with an external thread which is conveniently in threaded connection with the fixed threaded sleeve.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the special-shaped groove is formed and processed at one time through the cutter head, so that the processing precision of the special-shaped groove is improved, the cutter connecting trace caused by multi-cutter processing is avoided, the number of cutters is reduced, the processing time is reduced, the efficiency is improved, and the cost is reduced;

(2) according to the tool bit, the rotating block is shifted to drive the screw rod to rotate, so that the movable block moves up and down outside the threads, the connecting rod drives the fastening rod to expand outwards or contract inwards, the first engaging tooth and the second engaging tooth are matched with each other, and then the tool bit and the fixing rod can be assembled or disassembled quickly under the condition of thread fixation or thread loosening of the fixed threaded sleeve, so that the tool bit can be replaced locally, and cost reduction is facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the cabinet of the present invention;

FIG. 3 is a schematic view of a cutting tooth according to the present invention;

FIG. 4 is a schematic view of a blade structure of the cutting tooth of the present invention;

FIG. 5 is an enlarged view of the structure at I of the present invention;

FIG. 6 is a partial cross-sectional view of the present invention;

FIG. 7 is a partial exploded view of the present invention;

FIG. 8 is a schematic view of the mounting structure of the movable block of the present invention;

FIG. 9 is a schematic view of a second tooth mounting arrangement in accordance with the present invention;

FIG. 10 is a schematic view of a machining structure of the special-shaped groove of the present invention;

FIG. 11 is a schematic view of a general groove processing configuration of the present invention;

in the figure: 1. fixing the rod; 2. a cutter bar; 3. a cutter head; 301. cutting teeth; 4. a sleeve; 5. a rotating groove; 6. a bearing; 7. a screw; 8. rotating the block; 9. an opening; 10. a movable block; 11. a connecting rod; 12. a fastening rod; 13. a first tooth-biting; 14. connecting blocks; 15. a limiting ring; 16. fixing the threaded sleeve; 17. anti-skid lines; 18. positioning a groove; 19. a clamping groove; 20. a second tooth-biting; 21. an external thread; 22. and locking the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, as shown in fig. 1 to 10, the present invention includes a fixing rod 1, a cutter bar 2 and a cutter head 3, wherein one end of the fixing rod 1 is connected with the cutter bar 2, one end of the cutter bar 2 is connected with the cutter head 3, the cutter head 3 is composed of three cutting teeth 301, and the three cutting teeth 301 are circumferentially and uniformly distributed at the outer end of the cutter bar 2.

In the second embodiment, on the basis of the first embodiment, the blade diameter D of the tool bit 3 is 2.4 mm; the blade length L is 0.85 mm; the blade length L1 at the inner groove is 0.45 mm; the cutting depth L2 at the inner groove is 0.5 mm; the neck diameter D1 is 0.7 mm; the radius value R1 of the tool nose is 0.1 mm; the value of the outer radius R2 of the inner groove is 0.15 mm; the inner radius value R3 of the inner groove is 0.15 mm; the angle A of the inner groove is 90 degrees; the slotting angle a is 90 degrees; the resulting width W1 of the relief angle is 0.1 mm; the total edge width W is 0.8 mm; the rear angles a1 and a2 are 12 ° and 25 °, respectively.

In the third embodiment, on the basis of the first embodiment, a sleeve 4 is connected to the middle of one end of a fixed rod 1, a rotating groove 5 is formed in one end of the fixed rod 1 close to the sleeve 4, a screw 7 is rotatably connected to the inside of the sleeve 4 through a bearing 6, a rotating block 8 is connected to one end of the screw 7 and extends to the inside of the rotating groove 5, a lock nut 22 is sleeved on the outer thread of the screw 7 below the rotating block 8, openings 9 are symmetrically formed in the outer end of the sleeve 4 in a crossed manner, so that connecting rods 11 can conveniently move up and down in the openings 9, a movable block 10 is sleeved on the outer end of the screw 7 in a threaded manner, a connecting rod 11 is rotatably connected to the outer end of the movable block 10, the connecting rod 11 is located in the openings 9, one end of the connecting rod 11 is rotatably connected to a fastening rod 12, one end of the fastening rod 12 and one end of the end face of the fixed rod 1 are rotatably connected to the fastening rod 12, first teeth 13 are uniformly connected, and the lower end of the fixed rod 1 is symmetrically connected to the connecting block 14 in a crossed manner, one end of the fastening rod 12 and the connecting block 14 rotatably connected with the fixing rod 1 is connected with a limiting ring 15, a fixing threaded sleeve 16 is sleeved outside the limiting ring 15, the outer end of the fixing threaded sleeve 16 is provided with anti-skidding threads 17, the anti-skidding threads 17 are vertical, one end of the cutter rod 2 is provided with a positioning groove 18, the inner wall of the positioning groove 18 is symmetrically provided with clamping grooves 19 in a crossed manner, the inner wall of each clamping groove 19 is uniformly connected with a second engagement tooth 20, the outer end of the cutter rod 2 is provided with external threads 21 which are conveniently in threaded connection with the fixing threaded sleeve 16;

sleeving the cutter bar 2 with one end of the fixed rod 1 to enable the sleeve 4 to be located in the positioning groove 18, enabling the four fastening rods 12 to be located in the clamping grooves 19 respectively, then enabling the rotating block 8 to drive the screw 7 to rotate by virtue of shifting the rotating block 8, enabling the movable block 10 to gradually move downwards along with the rotation of the screw 7, further enabling the fastening rods 12 to gradually rotate and expand outwards around the connecting block 14 under the driving of the connecting rod 11, enabling the first biting teeth 13 to be meshed with the second biting teeth 20 in the positioning groove 18, then screwing the locking nut 22, further fixing the cutter bar 2 at the lower end of the fixed rod 1, then connecting the fixing threaded sleeve 16 with the nut of the cutter bar 2, further fixing the cutter bar 2, and further completing the assembly of the device;

when the cutter is damaged and needs to be replaced, firstly, the thread of the fixed threaded sleeve 16 is loosened, then the locking nut 22 is loosened, then the rotating block 8 is rotated to drive the movable block 10 of the screw 7 to gradually move upwards, the fastening rod 12 is gradually contracted inwards around the connecting block 14 under the drive of the connecting rod 11, then the first biting tooth 13 and the second biting tooth 20 are separated, and then the cutter bar 2 can be detached from the fixed rod 1.

The working principle is as follows: when the device is used, the cutter bar 2 is sleeved with one end of the fixed rod 1, so that the sleeve 4 is positioned in the positioning groove 18, the four fastening rods 12 are respectively positioned in the clamping grooves 19, then the rotating block 8 is shifted, the rotating block 8 drives the screw rod 7 to rotate, preferably, in the device, the upper part of the screw rod 7 is smooth, so that the screw rod 7 can rotate in situ, the movable block 10 gradually moves downwards along with the rotation of the screw rod 7, the fastening rods 12 gradually rotate outwards around the connecting block 14 to expand under the driving of the connecting rod 11, so that the first biting teeth 13 are meshed with the second biting teeth 20 in the positioning groove 18, then the locking nut 22 is screwed, the cutter bar 2 is fixed at the lower end of the fixed rod 1, then the fixed threaded sleeve 16 is connected with the nut of the cutter bar 2, and the cutter bar 2 is further fixed, so that the device is assembled; then, the device is mounted on a driving mechanism, and the tool bit 3 is driven to rotate, thereby machining a groove in the workpiece.

Claims

1. The utility model provides a reverse dysmorphism groove one shot forming processing is with shaping T type sword, includes dead lever (1), cutter arbor (2) and tool bit (3), its characterized in that: dead lever (1) one end is connected with cutter arbor (2), and cutter arbor (2) one end is connected with tool bit (3), and tool bit (3) comprise cutting teeth (301), and cutting teeth (301) are three, three cutting teeth (301) circumference evenly distributed in cutter arbor (2) outer end.

2. The forming T-shaped cutter for one-step forming processing of the reverse special-shaped groove according to claim 1, characterized in that: the diameter D of the blade of the cutter head (3) is 2.4 mm; the blade length L is 0.85 mm; the blade length L1 at the inner groove is 0.45 mm; the cutting depth L2 at the inner groove is 0.5 mm; the neck diameter D1 is 0.7 mm; the radius value R1 of the tool nose is 0.1 mm; the value of the outer radius R2 of the inner groove is 0.15 mm; the inner radius value R3 of the inner groove is 0.15 mm; the angle A of the inner groove is 90 degrees; the slotting angle a is 90 degrees; the resulting width W1 of the relief angle is 0.1 mm; the total edge width W is 0.8 mm; the rear angles a1 and a2 are 12 ° and 25 °, respectively.

3. The forming T-shaped cutter for one-step forming processing of the reverse special-shaped groove according to claim 1, characterized in that: dead lever (1) one end middle part is connected with sleeve (4), and dead lever (1) is close to sleeve (4) one end inside and has seted up rotation groove (5), and sleeve (4) are inside to be rotated through bearing (6) and are connected with screw rod (7), and screw rod (7) one end extends to rotation groove (5) internal connection and has turning block (8), and turning block (8) below just is located screw rod (7) outside screw thread and has cup jointed lock nut (22).

4. The T-shaped cutter for one-step forming machining of the reverse special-shaped groove according to claim 3, wherein: opening (9) have been seted up to sleeve (4) outer end cross symmetry, and movable block (10) have been cup jointed to screw rod (7) outer end screw thread, and movable block (10) outer end rotates and is connected with connecting rod (11), and inside connecting rod (11) were located opening (9), connecting rod (11) one end rotated and is connected with anchorage bar (12), and anchorage bar (12) one end rotates with dead lever (1) terminal surface and is connected.

5. The T-shaped cutter for one-step forming machining of the reverse special-shaped groove according to claim 4, wherein: fastening rod (12) one end evenly is connected with first and stings tooth (13), and dead lever (1) lower extreme cross symmetric connection has connecting block (14), and fastening rod (12) are connected with connecting block (14) rotation.

6. The T-shaped cutter for one-step forming machining of the reverse special-shaped groove according to claim 3, wherein: dead lever (1) one end is connected with spacing collar (15), and the outside cover of spacing collar (15) is equipped with fixed swivel nut (16), and anti-skidding line (17) have been seted up to fixed swivel nut (16) outer end, and anti-skidding line (17) are vertical form.

7. The forming T-shaped cutter for one-step forming processing of the reverse special-shaped groove according to claim 1, characterized in that: one end of the cutter bar (2) is provided with a positioning groove (18), the inner wall of the positioning groove (18) is symmetrically provided with clamping grooves (19) in a crossed manner, and the inner wall of each clamping groove (19) is uniformly connected with second engaging teeth (20).

8. The T-shaped cutter for one-step forming machining of the reverse special-shaped groove according to claim 7, wherein: the outer end of the cutter bar (2) is provided with an external thread (21) which is conveniently in threaded connection with the fixed threaded sleeve (16).