Ultra-fine grain hard alloy boring cutter

Abstract

The utility model relates to the technical field of boring cutters, and provides an ultra-fine grain hard alloy boring cutter which comprises a boring cutter rod and a boring cutter head, the boring cutter head is fixed at the front end of the boring cutter rod, a fixing groove is formed in the front end in the boring cutter head, a cutter shell is installed in the fixing groove, blades are installed at the upper end and the lower end of the cutter shell, and a built-in groove is formed in the boring cutter head. According to the utility model, the rotary table is rotated to drive the gear so as to drive the rack meshed with the gear to move up and down, the knife shell fixedly connected with the rack also moves along with the gear, and the position of the blade is changed, so that the knife can be fixed on the knife shell, and the knife can be fixed on the knife shell. Therefore, the rotation size of the boring cutter can be enlarged or shrunk. The flexible size adjusting function can meet diversified machining requirements, it can be guaranteed that the cutting size of the boring cutter is accurate no matter fine machining or conventional operation is conducted, and the machining precision and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to boring cutter technical field, especially in super fine grain hard alloy boring cutter. BACKGROUND

[0002] The super fine grain hard alloy boring cutter is made of super fine grain hard alloy. The special hard alloy material has extremely small internal grain size, which is usually below 0.5 microns, and endows the boring cutter with excellent performance. In the machining process, the existing hole can be efficiently and accurately cut, and the hole diameter can be expanded by removing the excess material on the hole wall.

[0003] However, the rotating cutting area of the conventional boring cutter is determined by the fixed structure of the cutter and cannot be changed once determined. When facing complex and various machining tasks, the boring cutter needs to be frequently replaced to adapt to different hole diameters. These operations not only consume a lot of time, causing production interruption and delaying production progress, but also require high technical requirements for the operator. If the operation is not proper, the cutter or equipment can be easily damaged, increasing the production cost. The whole process is time-consuming and laborious, seriously restricting the improvement of production efficiency and the control of machining cost. SUMMARY

[0004] The utility model discloses a super fine grain hard alloy boring cutter, which solves the above problems.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a super fine grain hard alloy boring cutter, comprising a boring cutter rod and a boring cutter head, the front end of the boring cutter rod is fixed with the boring cutter head, the front end of the boring cutter head is provided with a fixed groove, the inside of the fixed groove is provided with a cutter shell, the upper and lower ends of the cutter shell are provided with cutter blades, the inside of the boring cutter head is provided with an embedded groove, the embedded groove is communicated with the inside of the fixed groove, the inside of the embedded groove is rotatably provided with a gear, the gear is located at the rear end of the cutter shell, the front end of the gear is engaged with a rack, and the rack is fixed to the rear side wall of the cutter shell.

[0006] Preferably, grooves are formed in the two sides of the boring cutter head, the grooves are located on the two sides of the gear, and rotary discs are rotatably arranged in the grooves. The rotary shafts of the two rotary discs towards the central positions of the two sides of the gear are fixedly connected with the rotary shafts of the central positions of the two sides of the gear.

[0007] Preferably, screw holes are equidistantly formed in the outer periphery of the rotary disc, and threaded pins are screw-connected in the screw holes. One end of the threaded pin abuts against the inner wall of the groove.

[0008] Preferably, sliding grooves are formed in the two sides of the fixed groove, and sliding blocks are slidably arranged in the sliding grooves. The sliding blocks are fixed to the two side walls of the cutter shell.

[0009] Preferably, the upper and lower ends of the cutter shell are provided with mounting grooves, the cutter blade is mounted in the mounting grooves, the two side walls of the cutter blade are provided with side holes, the two sides of the mounting grooves are provided with insertion holes, the positions of the insertion holes and the side holes are opposite, and the insertion holes are internally threadedly connected with fixing bolts, one end of the fixing bolts is screwed into the inside of the side hole.

[0010] Compared with the prior art, the utility model has the beneficial effects as follows:

[0011] 1. The super-fine grain hard alloy boring cutter is characterized in that the rotating disc is driven to rotate to drive the gear engaged with the gear rack to move up and down, the cutter shell fixedly connected with the gear rack also moves, and the position of the cutter blade can be changed, so that the boring cutter can be expanded or reduced in size.

[0012] 2. The super-fine grain hard alloy boring cutter is characterized in that after the cutter blade is adjusted to a suitable position, the threaded pin is rotated to press the inner wall of the groove, the position of the rotating disc is fixed, the gear connected with the rotating disc is also fixed, and the position of the cutter shell is fixed.

[0013] 3. The super-fine grain hard alloy boring cutter is characterized in that when the cutter blade is mounted, the cutter blade is mounted in the mounting groove, the insertion hole and the side hole are opposite, and the fixing bolt is screwed in to press the two sides of the cutter blade and complete the mounting; when the cutter blade is dismounted, the fixing bolt is unscrewed, and the cutter blade can be easily taken out, so that the convenience of replacing the cutter blade is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model; Figure One

[0016] Figure 3 It is a schematic diagram of the overall structure of the utility model; Figure Two

[0017] Figure 4 It is a schematic diagram of the overall structure of the utility model; Figure Three

[0018] Figure 5 It is a schematic diagram of the overall structure of the utility model; ​​​

[0019] Figure 6 It is the knife shell structure sectional view of the utility model;

[0020] Figure 7 It is the knife shell structure split view of the utility model.

[0021] The figure mark explanation: 1, boring bar; 2, boring head; 3, fixed groove; 31, knife shell; 32, blade; 321, installation groove; 322, fixed bolt; 323, jack; 324, side hole; 33, sliding slot; 34, sliding block; 4, recess; 41, rotating disc; 42, built-in slot; 43, gear; 44, rack; 45, screw hole; 46, threaded pin. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings.

[0024] In combination with Figures 1 to 7 As shown in the figure, the utility model discloses a super fine grain hard alloy boring tool, including boring bar 1 and boring head 2, the front end of boring bar 1 is fixed with boring head 2, the front end in boring head 2 is provided with fixed groove 3, the inside of fixed groove 3 is installed with knife shell 31, the upper and lower ends of knife shell 31 are installed with blade 32, the inside of boring head 2 is provided with built-in slot 42, built-in slot 42 is communicated with the inside of fixed groove 3, the inside of built-in slot 42 is rotatably provided with gear 43, gear 43 is located at the rear end of knife shell 31, the front end of gear 43 is engaged with rack 44, rack 44 is fixed on the rear side wall of knife shell 31.

[0025] The both sides of boring head 2 are provided with recess 4, recess 4 is located at the both sides of gear 43, rotating disc 41 is rotatably arranged in recess 4, the rotating shafts of the two rotating discs 41 towards the central position of gear 43 are fixedly connected with the rotating shafts of the both sides of gear 43.

[0026] The outer periphery of rotating disc 41 is equidistantly provided with screw hole 45, threaded pin 46 is screw-connected in screw hole 45, one end of threaded pin 46 is in abutment with the inner wall of recess 4.

[0027] The both sides of fixed groove 3 are provided with sliding slot 33, sliding block 34 is slidably arranged in sliding slot 33, sliding block 34 is fixed on the both side walls of knife shell 31.

[0028] The upper and lower ends of the cutter shell 31 are provided with mounting grooves 321, the cutter blade 32 is mounted in the interior of the mounting grooves 321, the two side walls of the cutter blade 32 are provided with side holes 324, the two sides of the mounting grooves 321 are provided with insertion holes 323, the insertion holes 323 are opposite to the side holes 324 in position, and the interior of the insertion holes 323 is threadedly connected with fixing bolts 322, one end of the fixing bolts 322 is screwed into the interior of the side holes 324.

[0029] Specifically, the cutter blade 32 is mounted into the mounting grooves 321, at this time, the insertion holes 323 are opposite to the side holes 324, the fixing bolts 322 are screwed from the insertion holes 323, and the end portions of the fixing bolts 322 are tightly screwed into the side holes 324 to press the two sides of the cutter blade 32, and the mounting operation of the cutter blade 32 is completed.

[0030] Similarly, the fixing bolts 322 are screwed out from the side holes 324 and the insertion holes 323, and the cutter blade 32 can be taken out from the mounting grooves 321.

[0031] The rotation of the rotating disc 41 drives the gear 43 to rotate, drives the meshed rack 44 to move upward or downward, the cutter shell 31 fixedly connected with the rack 44 is moved upward or downward, the position of the cutter blade 32 is changed, the position of the cutter shell 31 is adjusted by screwing the rotating disc 41, the position of the cutter blade 32 is changed, the expanding or reducing adjustment operation of the rotation size of the boring cutter is realized.

[0032] After the cutter blade 32 is adjusted to the appropriate position, the threaded pin 46 is rotated to press the inner wall of the groove 4, the position of the rotating disc 41 is fixed, the gear 43 connected therewith is fixed, the position of the cutter shell 31 is ensured to be fixed, and the problem of the boring cutter caused by the retraction of the cutter shell 31 during the use of the boring cutter is prevented.

[0033] When the cutter shell 31 moves upward and downward in the interior of the fixed groove 3, the cutter shell 31 drives the sliding groove 33 to slide upward and downward in the sliding block 34, the sliding groove 33 and the sliding block 34 can guide the movement of the cutter shell 31, and the stability of the movement of the cutter shell 31 is ensured.

[0034] It should be noted that, in the present document, the terms such as first and second, and the like, are used merely to differentiate one entity or action from another, and do not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including", or any other variant are intended to cover non-exclusive inclusions, such that a process, method, article, or apparatus that comprises a list of elements does not include those elements solely, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A super fine grain cemented carbide boring tool comprising a boring tool shank (1) and a boring tool head (2), characterized in that: The front end of the boring bar (1) is fixed with a boring head (2), the front end of the boring head (2) is provided with a fixed groove (3) inside, the inside of the fixed groove (3) is installed with a cutter shell (31), the upper and lower ends of the cutter shell (31) are installed with cutter blades (32), the inside of the boring head (2) is provided with an inside groove (42), the inside groove (42) is communicated with the inside of the fixed groove (3), the inside of the inside groove (42) is rotatably provided with a gear (43), the gear (43) is located at the rear end of the cutter shell (31), the front end of the gear (43) is engaged with a rack (44), and the rack (44) is fixed on the rear side wall of the cutter shell (31).

2. A super fine grain cemented carbide boring tool according to claim 1, characterized in that: The both sides of the boring head (2) are provided with grooves (4), the grooves (4) are located on the both sides of the gear (43), the inside of the groove (4) is rotatably provided with a rotating disc (41), and the rotating shafts of the two rotating discs (41) towards the central positions of the gear (43) are fixedly connected with the rotating shafts of the central positions of the gear (43).

3. A super fine grain cemented carbide boring tool according to claim 2, characterized in that: The outer periphery of the rotating disc (41) is equidistantly provided with screw holes (45), the inside of the screw hole (45) is threadedly connected with a threaded pin (46), and one end of the threaded pin (46) abuts against the inner wall of the groove (4).

4. A super fine grain cemented carbide boring tool according to claim 3, characterized in that: The both sides of the inside of the fixed groove (3) are provided with sliding grooves (33), the inside of the sliding groove (33) is slidably provided with sliding blocks (34), and the both side walls of the cutter shell (31) are fixed with the sliding blocks (34).

5. A super fine grain cemented carbide boring tool according to claim 4, characterized in that: The upper and lower ends of the cutter shell (31) are provided with installation grooves (321), the cutter blades (32) are installed in the inside of the installation grooves (321), the both side walls of the cutter blade (32) are provided with side holes (324), the both sides of the installation groove (321) are provided with insertion holes (323), the positions of the insertion holes (323) and the side holes (324) are opposite, the inside of the insertion hole (323) is threadedly connected with a fixed bolt (322), and one end of the fixed bolt (322) is screwed into the inside of the side hole (324).

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