Machining T-shaped cutter

Abstract

The utility model relates to the technical field of machining T-shaped cutters, in particular to a machining T-shaped cutter which comprises a cutter bar. A bottom fixing assembly is installed at the bottom end of the cutter bar, the cutter bar is sleeved with multiple sets of blade assemblies, the multiple sets of blade assemblies are arranged in a stacked mode, a second through groove is formed in the convex disc and the cutter head in a penetrating mode, and the convex disc on the lower portion of every two adjacent sets of blade assemblies is embedded in a circular groove in the blade assembly on the upper portion. The third penetrating holes in every two adjacent blade assemblies are communicated, the fixing screws are arranged in the third penetrating holes in the multiple blade assemblies in a penetrating mode, the nuts are screwed off from the threaded ends of the fixing screws, at the moment, the stacked cutter heads can be taken down from the cutter bar in a sliding mode, and the damaged cutter heads are replaced. After replacement, the cutter head is arranged on the outer side of the cutter bar again and fastened between the bottom fixing plate and the upper fixing cover, the effect of independently replacing the damaged blade is achieved in a matched mode, and compared with a traditional T-shaped milling cutter which is replaced when damaged, the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machining T-shaped knives, in particular to a machining T-shaped knife. Background Art

[0002] T-type milling cutters are usually required in equipment manufacturing and processing. T-type milling cutters are mainly made of metal materials with higher hardness. T-type milling cutters are used to mill T-shaped grooves and side grooves of workpieces. They can also be used for surface milling and have higher milling performance.

[0003] A patent with announcement number CN 112453529 A discloses a new type of T-slot milling cutter, which includes a main body mechanism, a protective mechanism, a connecting mechanism and a slot mechanism. The main body mechanism is fixedly installed at one end of the connecting mechanism, and the protective mechanism is fixedly installed at one end of the slot mechanism. By using a spiral blade structure to replace the traditional straight blade or oblique blade structure, the cutting smoothness is increased. By setting chip grooves, etc., the material eating strength of the cutter teeth is improved, the influence of waste chips on cutting accuracy is avoided, and the production and installation are simple.

[0004] However, since the existing T-type milling cutter head body is an integrally formed structure, if one of the cutting edges of the milling cutter is damaged, the entire milling cutter needs to be replaced and discarded, and the damaged part cannot be replaced separately, which increases the funds required for production and leads to increased production costs. Therefore, a machined T-type cutter is proposed to address the above problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and address the problems existing in the prior art, the utility model proposes a machined T-shaped cutter.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention is a machined T-shaped knife, comprising a knife bar; a bottom fixing assembly is installed at the bottom end of the knife bar, a top fixing assembly is slidably provided on the knife bar, a plurality of blade assemblies are sleeved on the knife bar, the plurality of blade assemblies are arranged to overlap each other, and the plurality of blade assemblies are fixed between the top fixing assembly and the bottom fixing assembly by fixing screws;

[0007] The blade assembly includes a cutter disc, the upper surface of the cutter disc is provided with a convex disc, the convex disc and the cutter disc are provided with a No. 2 through groove, the convex disc is symmetrically provided with two No. 2 clamping blocks, the lower surface of the cutter disc is provided with a circular groove, and the circular groove is symmetrically provided with two No. 2 clamping slots;

[0008] The No. 2 through groove is provided with a No. 2 limiting rib groove which cooperates with the limiting rib to limit the position. The convex disc in the lower part of the two adjacent groups of blade assemblies is embedded in the circular groove in the upper blade assembly, and the two No. 2 clamping blocks at the lower part are respectively embedded in the two No. 2 clamping grooves at the upper part. Four No. 3 through holes are symmetrically provided on the cutter disc, and the No. 3 through holes in the two adjacent groups of blade assemblies are connected, and the fixing screw is passed through the No. 3 through holes in multiple groups of blade assemblies, which achieves the function of replacing damaged blades separately. Compared with the traditional T-shaped milling cutter, the replacement of damaged blades effectively reduces the production cost.

[0009] Preferably, the cutter disc is evenly distributed with blades on the side, and the blades in the two connected blade assemblies are staggered. The cutter disc is slidably set on the cutter rod through the No. 2 through slot, and the cooperation is achieved to ensure the normal slotting and milling processing of the T-type milling cutter and the normal use of the tool.

[0010] Preferably, two limiting ribs are symmetrically provided on the side of the knife rod, and multiple sets of blade assemblies and top fixing assemblies are clamped on the knife rod through the limiting ribs, which cooperate to achieve the function of limiting the knife disc and the upper fixed cover, ensuring the stability of the connection between the blade and the guide rod.

[0011] Preferably, the bottom fixing assembly includes a bottom fixing plate, and the bottom fixing plate is installed at the bottom end of the knife rod, and a No. 1 through-hole is symmetrically provided on the bottom fixing plate, and an engaging groove is respectively provided at the bottom of the No. 1 through-hole opening. Two No. 1 card blocks are symmetrically arranged on the bottom fixing plate, and the two No. 1 card blocks are respectively embedded in the No. 2 card slot in the bottommost blade assembly, so as to achieve the function of limiting and fastening the knife disc and improve the stability of use.

[0012] Preferably, the top fixing assembly includes an upper fixing cover, in which two No. 1 card slots are symmetrically provided, and the two No. 2 card blocks in the topmost blade assembly are respectively embedded in the two No. 1 card slots, thereby achieving the function of fixing the blade disc and preventing the blade disc from sliding and affecting use during use.

[0013] Preferably, a through groove No. 1 for sliding on the knife rod is provided on the upper fixed cover, and two No. 1 limiting rib grooves for cooperating with two limiting ribs for limiting the position are symmetrically provided on the inner wall of the through groove No. 1, thereby achieving the function of limiting the upper fixed cover and ensuring the installation accuracy of the upper fixed cover.

[0014] Preferably, a hexagonal screw head is provided at one end of the fixing screw, and the hexagonal screw head is clamped in the fitting groove opened at the bottom of the bottom fixing plate, and the other end passes through the bottom fixing plate, the No. 3 through-hole and the No. 2 through-hole opened on the multiple superimposed cutter discs, and is connected to a nut through a thread, and the nut is located on the upper fixing cover, and the cooperation achieves the function of fixing and tightening the cutter disc, preventing the cutter disc from falling off the cutter rod during use.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model unscrews the nut from the threaded end of the fixing screw and slides the upper fixing cover off the cutter rod. At this time, the superimposed cutter disc can be slid off the cutter rod and the damaged cutter disc can be replaced. After replacement, the cutter disc is set on the outside of the cutter rod again and tightened between the bottom fixing plate and the upper fixing cover. The damaged blade can be replaced separately, which effectively reduces the production cost compared with the traditional T-shaped milling cutter replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0019] Figure 2 It is an enlarged schematic diagram of the cutaway main structure of the fixed component;

[0020] Figure 3 This is an enlarged schematic diagram of the main structure of the top fixed component;

[0021] Figure 4 This is an enlarged schematic diagram of the main structure of the bottom fixing component;

[0022] Figure 5 An enlarged schematic diagram of the main structure of multiple blade assemblies stacked together;

[0023] Figure 6 It is an enlarged schematic diagram of the upper surface of the cutter head main structure;

[0024] Figure 7 This is an enlarged schematic diagram of the lower surface of the cutter head main structure.

[0025] In the figure: 1. Cutter bar; 2. Bottom fixing plate; 201. Block No. 1; 3. Upper fixing cover; 301. Slot No. 1; 4. Limiting rib; 5. Through slot No. 1; 6. Limiting rib groove No. 1; 7. Through hole No. 1; 8. Fitting groove; 9. Fixing screw; 901. Hexagonal head of screw; 10. Through hole No. 2; 11. Nut; 12. Cutter disc; 13. Blade; 14. Through slot No. 2; 15. Limiting rib groove No. 2; 16. Through hole No. 3; 17. Boss; 18. Block No. 2; 19. Circular groove; 20. Slot No. 2. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-7 As shown, a machined T-shaped knife includes a knife bar 1; a bottom fixing assembly is installed at the bottom end of the knife bar 1, a top fixing assembly is slidably provided on the knife bar 1, and multiple sets of blade assemblies are sleeved on the knife bar 1, the multiple sets of blade assemblies are arranged superimposed on each other, and the multiple sets of blade assemblies are fixed between the top fixing assembly and the bottom fixing assembly by fixing screws 9;

[0028] The blade assembly includes a cutter disc 12, a convex disc 17 is provided on the upper surface of the cutter disc 12, a second through slot 14 is formed on the convex disc 17 and the cutter disc 12, two second clamping blocks 18 are symmetrically provided on the convex disc 17, and a circular groove 19 is provided on the lower surface of the cutter disc 12, and two second clamping slots 20 are symmetrically provided in the circular groove 19;

[0029] The No. 2 through groove 14 is provided with a No. 2 limiting rib groove 15 that cooperates with the limiting rib 4 to limit the position. The lower convex disc 17 of the two adjacent groups of blade assemblies is embedded in the circular groove 19 in the upper blade assembly, and the two No. 2 clamping blocks 18 at the lower part are respectively embedded in the two No. 2 clamping grooves 20 at the upper part. Four No. 3 through holes 16 are symmetrically provided on the cutter disc 12, and the No. 3 through holes 16 in the two adjacent groups of blade assemblies are connected, and the fixing screw 9 passes through the No. 3 through hole 16 set in multiple groups of blade assemblies.

[0030] The blades 13 are evenly distributed on the side of the cutter disc 12, and the blades 13 in the two connected blade assemblies are staggered. The cutter disc 12 is slidably set on the cutter rod 1 through the second through slot 14.

[0031] Two limiting ribs 4 are symmetrically provided on the side of the knife rod 1, and multiple sets of blade assemblies and top fixing assemblies are clamped on the knife rod 1 through the limiting ribs 4.

[0032] The bottom fixing assembly includes a bottom fixing plate 2, and the bottom fixing plate 2 is installed at the bottom end of the knife rod 1. A No. 1 through-hole 7 is symmetrically opened on the bottom fixing plate 2. The bottom of the bottom fixing plate 2 is provided with a fitting groove 8 at the opening of the No. 1 through-hole 7. Two No. 1 card blocks 201 are symmetrically arranged on the bottom fixing plate 2, and the two No. 1 card blocks 201 are respectively embedded in the No. 2 card slot 20 in the bottommost blade assembly.

[0033] The top fixing assembly includes an upper fixing cover 3 , in which two No. 1 card slots 301 are symmetrically provided, and the two No. 2 card blocks 18 in the uppermost blade assembly are respectively embedded in the two No. 1 card slots 301 .

[0034] The upper fixed cover 3 is provided with a No. 1 through slot 5 for sliding on the knife rod 1 , and the inner wall of the No. 1 through slot 5 is symmetrically provided with two No. 1 limiting rib grooves 6 for cooperating with the two limiting ribs 4 for limiting.

[0035] One end of the fixing screw 9 is provided with a screw hexagonal head 901, and the screw hexagonal head 901 is clamped in the interlocking groove 8 opened at the bottom of the bottom fixing plate 2. The other end passes through the bottom fixing plate 2, the No. 3 through-hole 16 and the No. 2 through-hole 10 opened on the multiple superimposed cutter discs 12, and is connected to a nut 11 through a thread, and the nut 11 is located on the upper fixing cover 3.

[0036] During operation, since the existing T-type milling cutter head body is an integrally formed structure, if one of the cutting edges of the milling cutter is damaged, the entire milling cutter needs to be replaced and discarded, and the damaged part cannot be replaced separately, which increases the funds required for production and leads to increased production costs. In this solution, multiple cutter discs 12 are sleeved on the cutter rod 1, so that the No. 2 limiting rib groove 15 in the No. 2 through groove 14 opened on the cutter disc 12 is slidably clamped on the limiting rib 4, and the bottom fixing plate 2 at the bottom end of the cutter rod 1 is embedded in the circular groove 19 opened at the bottom of the lowest cutter disc 12, and the No. 1 clamping block 201 set on the bottom fixing plate 2 is embedded in the No. 2 clamping groove 20 opened in the circular groove 19 at the bottom of the lowest cutter disc 12. When the cutter discs 12 are stacked and sleeved on the cutter rod 1, the upper cutter disc The circular groove 19 on the lower surface of 12 is embedded in the outer side of the convex disc 17 set on the upper surface of the lower blade disc 12, and the No. 2 card groove 20 opened in the circular groove 19 of the upper blade disc 12 is embedded in the outer side of the No. 2 card groove 20 on the upper part of the convex disc 17 set on the lower blade disc 12, and the No. 3 through-hole 16 opened on the blade disc 12 is communicated with the No. 1 through-hole 7. When multiple blade discs 12 are stacked, the blades 13 on the sides of adjacent blade discs 12 are staggered, and the No. 3 through-holes 16 opened on multiple blade discs 12 are communicated. Then the upper fixing cover 3 is slidably sleeved on the knife rod 1 through the No. 1 through-slot 5, and the upper fixing cover 3 is embedded in the outer side of the convex disc 17 set on the uppermost blade disc 12, and the No. 1 limiting rib groove 6 inside the No. 1 through-slot 5 will be slidably set on the outer side of the limiting rib 4. And make the No. 2 through-hole 10 communicate with the No. 3 through-hole 16 opened by multiple cutter discs 12. When installing the upper fixing cover 3, the No. 1 card groove 301 inside the upper fixing cover 3 is embedded in the outer side of the No. 2 card block 18 on the convex plate 17 set on the top cutter disc 12, and finally, the threaded end of the fixing screw 9 passes through the No. 1 through-hole 7 opened at the bottom of the bottom fixing plate 2, and the threaded end of the fixing screw 9 passes through the convex plate 17, the No. 3 through-hole 16 and the No. 2 through-hole 10 communicated between the stacked cutter discs 12 in sequence, and the hexagonal head 901 of the screw at the end of the fixing screw 9 is embedded in the embedding groove 8, and finally, the nut 11 is tightened on the threaded end of the fixing screw 9, and the nut 11 is located on the upper fixing cover 3. Under the cooperation and tightening of the nut 11 and the fixing screw 9, the upper The fixing cover 3 is squeezed downward, and then the multiple cutter discs 12 are fixed to the outside of the cutter rod 1 through the upper fixing cover 3, and fixed between the bottom fixing plate 2 and the upper fixing cover 3. When in use, the cutter rod 1 is installed on the equipment for processing. When the cutter disc 12 or the blade 13 on the side of the cutter disc 12 is damaged, the nut 11 is unscrewed from the threaded end of the fixing screw 9, the upper fixing cover 3 is slid off the cutter rod 1, and the upper fixing cover 3 is removed from the superimposed cutter disc 12. At this time, the superimposed cutter disc 12 can be slid off from the cutter rod 1, and the damaged cutter disc 12 can be replaced. After replacement, the cutter disc 12 is set on the outside of the cutter rod 1 again and fastened between the bottom fixing plate 2 and the upper fixing cover 3. The damaged blade is replaced separately.Compared with the traditional T-shaped milling cutter, the replacement of damaged ones effectively reduces the production cost.

[0037] The working principle is that multiple cutter discs 12 are sleeved on the cutter rod 1, so that the No. 2 limiting rib groove 15 in the No. 2 through groove 14 opened on the cutter disc 12 is slidably clamped on the limiting rib 4, and the bottom fixing plate 2 at the bottom end of the cutter rod 1 is embedded in the circular groove 19 opened at the bottom of the lowest cutter disc 12, and the No. 1 clamping block 201 set on the bottom fixing plate 2 is embedded in the No. 2 clamping groove 20 opened in the circular groove 19 at the bottom of the lowest cutter disc 12. When the cutter discs 12 are stacked and sleeved on the cutter rod 1, the circular groove 19 on the lower surface of the upper cutter disc 12 is embedded in the outer side of the convex disc 17 set on the upper surface of the lower cutter disc 12, and the No. 2 clamping groove 20 opened in the circular groove 19 of the upper cutter disc 12 is embedded in the No. 2 clamping groove 20 set on the lower cutter disc 12. The outer side of the No. 2 card slot 20 on the upper part of the convex disc 17 is arranged, and the No. 3 through-hole 16 opened on the cutter disc 12 is communicated with the No. 1 through-hole 7. When multiple cutter discs 12 are stacked, the blades 13 on the sides of adjacent cutter discs 12 are staggered, and the No. 3 through-holes 16 opened on multiple cutter discs 12 are communicated. Subsequently, the upper fixing cover 3 is slidably sleeved on the knife rod 1 through the No. 1 through-slot 5, and the upper fixing cover 3 is embedded in the outer side of the convex disc 17 set on the topmost cutter disc 12. The No. 1 limiting rib groove 6 inside the No. 1 through-slot 5 will be slidably set on the outer side of the limiting rib 4, and the No. 2 through-hole 10 is communicated with the No. 3 through-hole 16 opened by multiple cutter discs 12. When the upper fixing cover 3 is installed, the No. 1 card slot 301 inside the upper fixing cover 3 is embedded 8, and finally, the threaded end of the fixing screw 9 is passed through the No. 1 through-hole 7 opened at the bottom of the bottom fixing plate 2, and the threaded end of the fixing screw 9 is passed through the No. 3 through-hole 16 and the No. 2 through-hole 10 communicating between the convex plate 17 and the stacked cutting discs 12 in sequence, and the hexagonal head 901 of the screw at the end of the fixing screw 9 is engaged in the engaging groove 8, and finally, the nut 11 is tightened on the threaded end of the fixing screw 9, and the nut 11 is located on the upper fixing cover 3. Under the cooperation and tightening of the nut 11 and the fixing screw 9, the upper fixing cover 3 will be squeezed downward, and then the multiple cutting discs 12 are fixed to the outside of the cutter bar 1 through the upper fixing cover 3, and fixed thereto. When in use, the tool rod 1 is installed on the equipment between the bottom fixing plate 2 and the upper fixing cover 3 for processing. When the cutter disc 12 or the blade 13 on the side of the cutter disc 12 is damaged, the nut 11 is unscrewed from the threaded end of the fixing screw 9, and the upper fixing cover 3 is slid off the tool rod 1, and the upper fixing cover 3 is removed from the superimposed cutter disc 12. At this time, the superimposed cutter disc 12 can be slid off from the tool rod 1, and the damaged cutter disc 12 can be replaced. After replacement, the cutter disc 12 is set on the outside of the tool rod 1 again and fastened between the bottom fixing plate 2 and the upper fixing cover 3. The cooperation achieves the effect of replacing the damaged blade separately, which effectively reduces the production cost compared with the traditional T-shaped milling cutter damage replacement.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A machining T-type knife, characterized by: The present invention comprises a knife bar (1); a bottom fixing assembly is installed at the bottom end of the knife bar (1); a top fixing assembly is slidably arranged on the knife bar (1); a plurality of blade assemblies are sleeved on the knife bar (1); the plurality of blade assemblies are arranged to overlap each other, and the plurality of blade assemblies are fixed between the top fixing assembly and the bottom fixing assembly by fixing screws (9); The blade assembly comprises a cutter disc (12), a convex disc (17) is provided on the upper surface of the cutter disc (12), a No. 2 through groove (14) is provided on the convex disc (17) and the cutter disc (12), two No. 2 clamping blocks (18) are symmetrically provided on the convex disc (17), a circular groove (19) is provided on the lower surface of the cutter disc (12), and two No. 2 clamping grooves (20) are symmetrically provided in the circular groove (19); The No. 2 through groove (14) is provided with a No. 2 limiting rib groove (15) that cooperates with the limiting rib (4) to limit the position. The lower convex disc (17) of the two adjacent groups of blade assemblies is embedded in the circular groove (19) of the upper blade assembly, and the two No. 2 clamping blocks (18) at the lower part are respectively embedded in the two No. 2 clamping grooves (20) at the upper part. Four No. 3 through holes (16) are symmetrically provided on the cutter disc (12), and the No. 3 through holes (16) in the two adjacent groups of blade assemblies are connected, and the fixing screw (9) passes through the No. 3 through holes (16) set in multiple groups of blade assemblies.

2. The machining T-type cutter according to claim 1, characterized in that: The blades (13) are evenly distributed on the sides of the cutter disc (12), and the blades (13) in the two connected blade assemblies are staggered. The cutter disc (12) is slidably arranged on the cutter rod (1) through the second through slot (14).

3. The machining T-type cutter according to claim 1, characterized in that: Two limiting ribs (4) are symmetrically arranged on the side of the knife rod (1), and multiple sets of blade assemblies and top fixed assemblies are clamped on the knife rod (1) through the limiting ribs (4).

4. The machining T-type cutter according to claim 1, characterized in that: The bottom fixing assembly comprises a bottom fixing plate (2), and the bottom fixing plate (2) is mounted on the bottom end of the blade rod (1), a No. 1 through-hole (7) is symmetrically provided on the bottom fixing plate (2), and an engaging groove (8) is respectively provided at the opening of the No. 1 through-hole (7) at the bottom of the bottom fixing plate (2), and two No. 1 clamping blocks (201) are symmetrically provided on the bottom fixing plate (2), and the two No. 1 clamping blocks (201) are respectively engaged in the No. 2 clamping groove (20) in the bottommost blade assembly.

5. The machining T-type cutter according to claim 1, characterized in that: The top fixing assembly comprises an upper fixing cover (3), wherein two No. 1 card slots (301) are symmetrically provided in the upper fixing cover (3), and the two No. 2 card blocks (18) in the uppermost blade assembly are respectively embedded in the two No. 1 card slots (301).

6. The machining T-type cutter according to claim 5, characterized in that: The upper fixed cover (3) is provided with a through slot (5) for sliding on the knife rod (1), and the inner wall of the through slot (5) is symmetrically provided with two limiting rib grooves (6) for cooperating with the two limiting ribs (4) to limit the position.

7. The machining T-shaped cutter according to claim 1, characterized in that: One end of the fixing screw (9) is provided with a screw hexagonal head (901), which is clamped in an engaging groove (8) provided at the bottom of the bottom fixing plate (2), and the other end of the screw passes through the bottom fixing plate (2), a number 3 through-hole (16) and a number 2 through-hole (10) provided on a plurality of superimposed cutter discs (12), and is then connected to a nut (11) via a thread, and the nut (11) is located on the upper fixing cover (3).

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