阅读说明：本技术 一种浮动刀柄 (Floating knife handle ) 是由 赵信冬 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种浮动刀柄,具有结构简单、使用效果好的特点,该刀具可以跟随零件毛坯位置变化而变化,不会出现毛坯面越高铣削越多,毛坯面越低铣削越少的现象,能够随铣削力的大小自动进行避让,以去除零件的毛刺或进行倒角加工,其技术方案要点是包括依次连接的刀柄、固定壳和浮动刀杆,所述固定壳与刀柄之间形成安装腔,安装腔内设有用于控制浮动刀杆径向浮动的径向浮动机构和用于控制浮动刀杆轴向浮动的轴向浮动机构,本发明适用于机加工刀具技术领域。(The invention discloses a floating cutter handle which has the characteristics of simple structure and good use effect, the cutter can change along with the position change of a part blank, the phenomena that the higher the blank surface is, the more the blank surface is milled, and the lower the blank surface is, the less the blank surface is milled are avoided, and the cutter can automatically avoid along with the milling force to remove burrs of the part or carry out chamfer machining.)

1. The utility model provides a handle of a knife floats, includes handle of a knife (1), set casing (2) and unsteady cutter arbor (3) that connect gradually, its characterized in that: a mounting cavity is formed between the fixed shell (2) and the cutter handle (1), and a radial floating mechanism for controlling the radial floating of the floating cutter bar (3) and an axial floating mechanism for controlling the axial floating of the floating cutter bar (3) are arranged in the mounting cavity.

2. The floating tool shank of claim 1, wherein: radial floating mechanism is including floating guide pin bushing (4), fixed cover (5) and first spring (6), fixed cover (5) fixed mounting in the installation intracavity, float cutter arbor (3) and install in floating guide pin bushing (4), form radial floating chamber (7) between fixed cover (5) and set casing (2) axial, floating guide pin bushing (4) including install in fixed cover (5) and can be in radial floating chamber (7) swing radial floating end (8), the axial is contradicted between first spring (6) and the radial floating end (8).

3. A floating tool shank according to claim 2 wherein: be equipped with internal tooth (9) on fixed cover (5) inner wall, be equipped with the external tooth with internal tooth (9) adaptation on the outer wall of radial floating end (8), be equipped with radial floating clearance between the external tooth face of radial floating end (8) and radial floating chamber (7) internal perisporium, and the tip block of external tooth is on the tip of internal tooth (9).

4. A floating tool shank according to claim 2 wherein: the axial end face of the radial floating end (8) is also provided with a step groove (10), and one end of the first spring (6) is positioned in the step groove (10).

5. A floating tool shank according to claim 2 wherein: still be equipped with spring holder (11) that contradicts with first spring (6) axial in handle of a knife (1), still be equipped with guiding hole (12) on the lateral wall of handle of a knife (1), be equipped with on spring holder (11) with be located guiding hole (12) locating pin (13).

6. A floating tool shank (1) according to claim 5, wherein: locating pin (13) extend to handle of a knife (1) outside, still overlap on handle of a knife (1) and be equipped with shell (14), threaded connection between shell (14) and handle of a knife (1), and shell (14) include spacing portion (15) of radially conflicting with locating pin (13), and shell (14) are used for adjusting the interval between spring holder (11) and the cutter arbor (3) that floats.

7. The floating tool shank of claim 1, wherein: the inner wall of the floating guide sleeve (4) is provided with guide grooves (16) which are arranged in an annular array mode, and guide teeth matched with the guide grooves (16) are arranged in the floating cutter bar (3).

8. A floating tool shank (1) according to claim 1, wherein: the axial floating mechanism comprises a second spring (17) located in the installation cavity, and the second spring (17) is axially abutted against the floating cutter bar (3).

9. The floating tool shank of claim 8, wherein: the knife handle (1) is further provided with an adjusting screw (18) which is axially abutted against the second spring (17), and the adjusting screw (18) is in threaded connection with the knife handle (1).

10. The floating tool shank of claim 1, wherein: the tool bit is characterized by further comprising a tool bit (19), wherein the tool bit (19) is connected with the floating tool bar (3) through a nut (20).

Technical Field

The invention belongs to the technical field of machining cutters, and particularly relates to a floating cutter handle.

Background

At present, with the continuous development of the technological level, nuclear power, war industry, aviation, high-tech robot and other high-precision fields, the requirements for hole precision and hole finish degree are higher and higher, and the hardness and strength of the material are also higher and higher, such as high-temperature alloy material, high-temperature alloy generally adopts direct casting molding, most of the upper molded surfaces of parts are directly milled on blank surfaces, thicker burrs can be generated between the processed surfaces and the blank surfaces, because the tolerance of the blank surfaces is larger, numerical control processing must operate a cutter track according to the actual position of a numerical control program, so that the traditional cutter can not uniformly remove the burrs or chamfers under the condition of larger blank size deviation, and improvement is needed.

Disclosure of Invention

The invention aims to provide a floating cutter handle which has the characteristics of simple structure and good use effect, the cutter can change along with the position change of a part blank, the phenomena that the higher the blank surface is, the more the blank surface is milled, and the lower the blank surface is, the less the blank surface is milled are avoided, and the cutter can automatically avoid along with the milling force so as to remove the burr of the part or carry out chamfering processing.

The purpose of the invention is realized as follows: the utility model provides a handle of a knife floats, includes handle of a knife, set casing and the cutter arbor that floats that connects gradually, its characterized in that: and a mounting cavity is formed between the fixed shell and the cutter handle, and a radial floating mechanism for controlling the floating cutter bar to float radially and an axial floating mechanism for controlling the floating cutter bar to float axially are arranged in the mounting cavity.

Further: the radial floating mechanism comprises a floating guide sleeve, a fixed sleeve and a first spring, the fixed sleeve is fixedly installed in the installation cavity, the floating cutter bar is installed in the floating guide sleeve, a radial floating cavity is formed between the fixed sleeve and the fixed shell in the axial direction, the floating guide sleeve comprises a radial floating end which is installed in the fixed sleeve and can swing in the radial floating cavity, and the first spring is axially abutted against the radial floating end.

Further: the inner wall of the fixed sleeve is provided with inner teeth, the outer wall of the radial floating end is provided with outer teeth matched with the inner teeth, a radial floating gap is arranged between the outer tooth surface of the radial floating end and the inner peripheral wall of the radial floating cavity, and the end part of the outer teeth is clamped on the end part of the inner teeth.

Further: and a step groove is also formed in the axial end face of the radial floating end, and one end of the first spring is positioned in the step groove.

Further: still be equipped with the spring holder that contradicts with first spring axial in the handle of a knife, still be equipped with the guiding hole on the lateral wall of handle of a knife, be equipped with on the spring holder with be located the guiding hole locating pin.

Further: the locating pin extends to the handle of a knife outside, still overlaps on the handle of a knife to be equipped with the shell, threaded connection between shell and the handle of a knife, and the shell includes the spacing portion of radially conflicting with the locating pin, and the shell is used for adjusting the interval between spring holder and the unsteady cutter arbor.

Further: the inner wall of the floating guide sleeve is provided with guide grooves which are arranged in an annular array mode, and guide teeth matched with the guide grooves are arranged in the floating cutter bar.

Further: the axial floating mechanism comprises a second spring positioned in the mounting cavity, and the second spring and the floating cutter bar are axially abutted.

Further: the knife handle is further provided with an adjusting screw which is axially abutted against the second spring, and the adjusting screw is in threaded connection with the knife handle.

Further: the tool bit is connected with the floating tool bar through a nut.

By adopting the technical scheme, the device has the advantages of simple integral structure, good use effect and suitability for popularization and use;

milling process or chamfer processing are carried out to the burr through the cutter that adopts to have radial floating machanism and axial floating machanism, and this cutter can change along with part blank position change, and the higher more milling more of blank face can not appear, and the lower less phenomenon of milling of blank face can dodge along with the size of milling power is automatic to get rid of the burr of part or carry out chamfer processing.

Drawings

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

the reference numbers in the figures are: 1. a knife handle; 2. a stationary case; 3. a floating cutter bar; 4. a floating guide sleeve; 5. fixing a sleeve; 6. a first spring; 7. a radial floating cavity; 8. a radially floating end; 9. internal teeth; 10. a step groove; 11. a spring seat; 12. a guide hole; 13. positioning pins; 14. a housing; 15. a limiting part; 16. a guide groove; 17. a second spring; 18. an adjusting screw; 19. a cutter head; 20. and (4) a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 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, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention:

the utility model provides a handle of a knife that floats, includes handle of a knife 1, set casing 2 and the cutter arbor 3 that floats that connect gradually, its characterized in that: and a mounting cavity is formed between the fixed shell 2 and the cutter handle 1, and a radial floating mechanism for controlling the radial floating of the floating cutter bar 3 and an axial floating mechanism for controlling the axial floating of the floating cutter bar 3 are arranged in the mounting cavity.

The outer end of the floating cutter bar 3 is used for installing a cutter head 19, and the radial swing of the floating cutter bar 3 can be realized through the arrangement of a radial floating mechanism; the axial floating of the floating cutter bar 3 can be realized through the arrangement of the axial floating mechanism.

Radial floating mechanism includes floating guide pin bushing 4, fixed cover 5 and first spring 6, and fixed cover 5 fixed mounting is in the installation cavity, and the cutter arbor 3 that floats is installed in floating guide pin bushing 4, forms radial floating chamber 7 between fixed cover 5 and the 2 axial of stationary housing, and floating guide pin bushing 4 is including installing in fixed cover 5 and can be in radial floating chamber 7 wobbling radial floating end 8, and the axial is contradicted between first spring 6 and the radial floating end 8.

The inner wall of the fixed sleeve 5 is provided with inner teeth 9, the outer wall of the radial floating end 8 is provided with outer teeth matched with the inner teeth 9, a radial floating gap is arranged between the outer tooth surface of the radial floating end 8 and the inner peripheral wall of the radial floating cavity 7, and the end part of the outer teeth is clamped on the end part of the inner teeth 9.

The knife handle 1 and the fixed shell 2 can be in threaded connection, the fixed sleeve 5 is provided with an outer edge and is fixed between the knife handle 1 and the fixed shell 2 through clamping of the outer edge, and the knife handle 1 is provided with pins which sequentially penetrate through the knife handle 1, the fixed shell 2 and the fixed sleeve 5, so that connection and installation reliability is ensured; the floating guide sleeve 4 axially penetrates through the fixed shell 2; after the floating guide sleeve 4 and the fixed sleeve 5 are installed, only the end part of the inner teeth 9 is clamped with the outer teeth, so that the fixed sleeve 5 can drive the floating guide sleeve 4 to rotate circumferentially, only part of the inner teeth is clamped with the outer teeth, most of the radial floating end 8 is positioned in the radial floating cavity 7, and a radial floating gap is formed between the radial floating end and the radial floating cavity, so that the floating guide sleeve 4 can swing; in order to ensure the radial swinging effect, the inner diameter of the fixing sleeve 5 can gradually increase from one end far away from the radial floating cavity 7 to one end close to the radial floating cavity 7, wherein the inner diameter of the fixing sleeve 5 comprises the inner diameter of a tooth root circle and the inner diameter of a tooth tip circle; the floating cutter bar 3 can swing radially when meeting large radial resistance in the machining process, and when the radial resistance is reduced, the return is realized through the elastic force of the first spring 6.

The axial end face of the radial floating end 8 is also provided with a step groove 10, and one end of the first spring 6 is positioned in the step groove 10.

The stepped groove 10 has a limiting effect on the end of the first spring 6, the installation stability is good, and the first spring 6 is prevented from being misplaced and losing efficacy.

Still be equipped with the spring holder 11 that butts with first spring 6 axial in the handle of a knife 1, still be equipped with guiding hole 12 on the lateral wall of handle of a knife 1, be equipped with on the spring holder 11 with be located the guiding hole 12 in locating pin 13.

The spring seat 11 can increase the installation stability of the other end of the first spring 6, and the spring seat 11 is limited on the knife handle 1 through the positioning pin 13, so that the spring seat 11 can rotate together with the knife handle 1 at any time.

Locating pin 13 extends to the handle of a knife 1 outside, still overlaps on the handle of a knife 1 to be equipped with shell 14, threaded connection between shell 14 and the handle of a knife 1, and shell 14 includes the spacing portion 15 of radially conflicting with locating pin 13, and shell 14 is used for adjusting the interval between spring holder 11 and the unsteady cutter arbor 3.

The principle is that when the shell 14 is tightly screwed with the tool holder 1, downward pressure is generated on the spring seat 11, so that the first spring 6 is compressed, and along with the increase of the compression amount, the swing amplitude is reduced when the same radial acting force is applied; on the contrary, when the outer shell 14 and the tool shank 1 are unscrewed, the first spring 6 is restored to be stretched, and the swing amplitude can be larger when the same radial acting force is applied; can be adjusted according to the requirements of processing different parts.

The inner wall of the floating guide sleeve 4 is provided with guide grooves 16 which are arranged in an annular array mode, and guide teeth matched with the guide grooves 16 are arranged in the floating cutter bar 3.

Through the arrangement of the guide groove 16 and the guide teeth, the floating guide sleeve 4 can drive the floating cutter bar 3 to rotate, and the floating cutter bar 3 can axially slide relative to the fixed sleeve 5.

The axial floating mechanism comprises a second spring 17 positioned in the installation cavity, the second spring 17 and the floating cutter rod 3 are axially abutted, and the second spring 17 can control the floating cutter rod 3 to float and reset.

The tool handle 1 is further provided with an adjusting screw 18 which is axially abutted against the second spring 17, the adjusting screw 18 is in threaded connection with the tool handle 1, and the compression amount of the second spring 17 can be adjusted through the adjusting screw 18, so that the axial floating amplitude is adjusted.

Still include the tool bit, be connected through being equipped with the nut between tool bit and the unsteady cutter arbor, easily the installation is fixed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.