Exterior tooth gear shaper cutter mounting assembly

Abstract

The utility model provides an external tooth gear shaper cutter clamping assembly, including the clamping seat that is fastened in numerical control lathe cutter by bolt and the external tooth gear shaper cutter that is clamped in the clamping seat, and the external tooth gear shaper cutter includes the handle and the detachable cutting edge that is installed in the forward end of handle and stretches out to the front, it is characterized by: the clamping recess is set up on the clamping seat, and the handle is detachably installed in the clamping recess through the inclined surface locking assembly, and the inclined surface locking assembly includes the locking wedge that is fastened in the clamping recess through bolt and the inclined surface cooperation block that cooperates with the inclined surface of locking wedge, and the handle is clamped in the clamping recess by locking wedge, the utility model improves the stability and reliability of external tooth gear shaper cutter clamping, guarantees the stable non-loose of external tooth gear shaper cutter reciprocating motion during the process of cutting and inserts, realizes the tooth gear cutting operation of once clamping to complete the whole workpiece, avoids secondary clamping, improves the tooth gear cutting precision, and the structure is simple, and the dismounting is convenient, and it is easy to dismount and replace, can realize the clamping of different specifications external tooth gear shaper cutter, and the practicality is high.

Description

Technical Field

[0001] This utility model relates to an external gear shaping cutter clamping assembly, belonging to the field of CNC lathe tool technology. Background Technology

[0002] Gear machining methods on shaft systems include hobbing, gear shaping, and milling. Gear shaping directly forms the tooth profile, offering the highest precision and wide application. Gear shaping involves machining the tooth surfaces of internal and external gears or racks using generating or forming methods with a gear shaper. Gear shaping can machine both spur and helical teeth. A gear shaper is essentially a gear with a ground rake angle and a cutting edge. Gear shaping is generally achieved through the reciprocating cutting motion of the gear shaper in conjunction with the rotation of the workpiece. For small module gears, due to the very small module and tooth space, the gear precision is generally 6-8, requiring even higher precision from the gear shaper. Currently, there are generally two types of gear shapers on the market: one is a solid tungsten carbide gear shaper, which has high strength, but if the cutting edge breaks, the entire tool needs to be replaced, resulting in wasted material in the tool holder. Furthermore, solid tungsten carbide gear shapers exhibit relatively large vibration amplitudes during long machining times. Another type is a split gear shaper, which combines a cutter shaft and a cutting edge. The cutting edge is installed at the front end of the cutter shaft and can be replaced, avoiding waste of the cutter bar. However, split gear shapers require high stability in the clamping of the cutter shaft and the cutting edge. If the stability is insufficient, multiple clamping will be required, which will reduce the tooth direction accuracy of the machined gear. Utility Model Content

[0003] The external gear shaping cutter clamping assembly provided by this utility model improves the stability and reliability of external gear shaping cutter clamping, ensures that the external gear shaping cutter remains stable and does not loosen during the reciprocating motion of the cutting process, realizes the complete gear shaping operation of the entire workpiece in one clamping, avoids secondary clamping, improves gear shaping accuracy, has a simple structure, is easy to disassemble and assemble, and is easy to replace. It can clamp external gear shaping cutters of different specifications and has high practicality.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An external gear shaping cutter clamping assembly includes a clamping seat fastened to a CNC lathe tool rest by bolts and an external gear shaping cutter clamped on the clamping seat. The external gear shaping cutter includes a tool holder and a detachable cutting edge mounted on the front end of the tool holder and extending forward. The clamping seat has a clamping groove, and the tool holder is detachably mounted in the clamping groove by a bevel locking assembly. The bevel locking assembly includes a locking wedge fastened to the clamping groove by bolts and a bevel mating block that engages with the bevel of the locking wedge. The tool holder is clamped in the clamping groove by the locking wedge.

[0005] Preferably, the clamping groove is opened along the length direction of the tool holder, and the inclined mating block, the locking wedge block and the tool holder are stacked sequentially from bottom to top in the clamping groove. The bottom surface of the locking wedge block and the top surface of the inclined mating block form an upward inclined mating. The bolt on the locking wedge block is set along the depth direction of the clamping groove, and the tool holder is clamped as the bolt is tightened.

[0006] Preferably, the cross-section of the knife handle is square and the longitudinal section is L-shaped, with the stepped surface on the knife handle abutting against the front end face of the locking wedge.

[0007] Preferably, the front end of the knife handle has a blade mounting hole and a blade clamping hole that is perpendicularly connected to the blade mounting hole. The blade clamping hole is a threaded hole. The blade extends into the blade mounting hole and abuts against the bottom surface of the hole. A screw is installed in the blade clamping hole, and the inner end of the screw abuts against the blade.

[0008] Preferably, the number of blade clamping holes is multiple, and they are arranged at intervals along the length of the blade on the bottom surface of the handle.

[0009] The beneficial effects of this utility model are: This utility model relates to an external gear shaping cutter clamping assembly. The clamping base has a clamping groove. When clamping the external gear shaping cutter, the tool holder, locking wedge, and inclined mating block are first installed into the clamping groove, and the locking wedge and the inclined mating block form an inclined mating. Then, the locking wedge is fastened to the clamping base with bolts. During the tightening of the bolts, the locking wedge is pushed into the clamping groove, and the locking wedge moves along the inclined mating surface to clamp the tool holder in the clamping groove. Then, the cutting edge is installed on the front end of the tool holder, and the clamping base is fixed to the tool rest of the CNC lathe to complete the assembly and installation of the entire clamping assembly. The locking wedge and the inclined surface of the inclined plate engage, allowing the locking wedge to move along the inclined surface and clamp the tool holder when tightened by bolts. Multiple bolts can be installed on the locking wedge according to the tool holder clamping requirements. When all bolts are tightened, the tool holder is firmly clamped by the locking wedge, improving the stability and reliability of the external gear shaping cutter clamping. This ensures that the external gear shaping cutter remains stable and does not loosen during the reciprocating motion of the cutting process, enabling the entire workpiece to be geared in one clamping operation, avoiding secondary clamping, and improving the gear shaping accuracy. Moreover, the tool holder, cutting edge, and locking wedge are all detachable, with a simple structure, convenient assembly and disassembly, and easy replacement. It can clamp external gear shaping cutters of different specifications, making it highly practical. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the external gear shaping cutter clamping assembly of this utility model.

[0011] Figure 2 Front view of the external gear shaper clamping assembly.

[0012] Figure 3 This is a side view of the external gear shaper clamping assembly. Detailed Implementation

[0013] The following is combined with Figures 1-3 The embodiments of this utility model will be described in detail below.

[0014] An external gear shaping cutter clamping assembly includes a clamping seat 1 fastened to a CNC lathe tool rest by bolts and an external gear shaping cutter 2 clamped on the clamping seat 1. The external gear shaping cutter 2 includes a tool holder 3 and a detachable cutting edge 4 mounted on the front end of the tool holder 3 and extending forward. The clamping seat 1 has a clamping groove 11. The tool holder 3 is detachably mounted in the clamping groove 11 by a bevel locking assembly. The bevel locking assembly includes a locking wedge 5 fastened to the clamping groove by bolts and a bevel mating block 6 that engages with the bevel of the locking wedge 5. The tool holder 3 is clamped in the clamping groove 11 by the locking wedge 5.

[0015] The external gear shaping cutter clamping assembly described above has a clamping groove 11 on the clamping base 1. When clamping the external gear shaping cutter 2, the tool holder 3, locking wedge 5, and inclined mating block 6 are first installed into the clamping groove 11, and the locking wedge 5 and the inclined mating block 6 form an inclined mating. Then, the locking wedge 5 is fastened to the clamping base 1 with bolts. During the tightening of the bolts, the locking wedge 5 is pushed into the clamping groove 11, so that the locking wedge 5 moves along the mating inclined surface to clamp the tool holder 3 in the clamping groove 11. Then, the cutting edge 4 is installed on the front end of the tool holder 3, and the clamping base 1 is fixed on the tool rest of the CNC lathe to complete the assembly and installation of the entire clamping assembly. The locking wedge 5 and the inclined surface of the inclined surface mating block 6 are used to make the locking wedge 5 move along the inclined surface to clamp the tool holder 3 when it is tightened by bolts. Multiple bolts can be set on the locking wedge 5 according to the clamping requirements of the tool holder 3. When all the bolts are tightened, the tool holder 3 is firmly clamped by the locking wedge 5, which improves the stability and reliability of the external gear shaping cutter 2 clamping, and ensures that the external gear shaping cutter can remain stable and not loose during the reciprocating motion of the gear shaping cutter. The entire workpiece gear shaping operation can be completed in one clamping, avoiding secondary clamping and improving the gear shaping accuracy. Moreover, the tool holder 3, the cutting edge 4 and the locking wedge 5 are all detachable and easy to install. The structure is simple, the disassembly and assembly are convenient, and the replacement is easy. It can realize the clamping of external gear shaping cutters 2 of different specifications, and has high practicality.

[0016] The clamping groove 11 is opened along the length direction of the tool holder 3. The inclined mating block 6, the locking wedge block 5 and the tool holder 3 are stacked in the clamping groove 11 from bottom to top. The bottom surface of the locking wedge block 5 and the top surface of the inclined mating block 6 form an upward inclined mating. The bolt on the locking wedge block 5 is set along the depth direction of the clamping groove 11. The tool holder 6 is clamped as the bolt is tightened. As shown in the attached diagram, the inclined mating block 6 is placed on the bottom surface of the clamping groove 11, the locking wedge block 5 is stacked on the inclined mating block 6, and the tool handle 3 is stacked on the locking wedge block 5 and in contact with the top surface of the clamping groove 11. Two bolts are mounted on the locking wedge block 5. When the bolts are tightened, they drive the locking wedge block 5 to move inward in the depth direction of the clamping groove 11, so that the locking wedge block 5 moves upward along the inclined surface on the inclined mating block 6. The tool handle 3 is clamped between the top surface of the locking wedge block 5 and the top surface of the clamping groove 11 as the locking wedge block 5 moves upward, forming a surface contact clamping of the tool handle 3, which results in better clamping uniformity.

[0017] The knife handle 3 has a square cross-section and an L-shaped longitudinal section. The stepped surface 31 on the knife handle 3 abuts against the front end face of the locking wedge 5. The square cross-section of the knife handle 3, along with the surface contact between the knife handle 3, the locking wedge 5, and the clamping groove 11, results in higher clamping stability. The stepped surface 31 on the knife handle 3 abuts against the front end face of the locking wedge 5, further improving the clamping stability of the knife handle 3 and preventing relative vibration between the knife handle 3 and the locking wedge 5.

[0018] The blade holder 3 has a blade mounting hole 32 and a blade clamping hole 33 perpendicularly connected to the blade mounting hole 32 at its front end. The blade clamping hole 33 is a threaded hole. The blade 4 extends into the blade mounting hole 32 and abuts against the bottom surface of the hole. A screw 7 is installed in the blade clamping hole 33, and the inner end of the screw 7 is pressed against the blade 4. When the blade 4 extends into the blade mounting hole 32 and abuts against the bottom surface of the hole, it is fully inserted. The screw 7 is screwed into the blade clamping hole 33 to fasten the blade 4 to the blade holder 3, so that the blade 4 is reliably positioned on the blade holder 3. The blade 4 is easy and simple to install and remove.

[0019] The blade clamping holes 33 are multiple and are arranged at intervals along the length of the blade 4 on the bottom surface of the handle 4. Each blade clamping hole 3 is fitted with a screw, and multiple screws 7 are used to fasten the blade 4 to the handle 3, ensuring the positioning stability and reliability of the blade 4 on the handle 3, preventing vibration of the blade 4 relative to the handle 3 during the gear hobbing process, and improving the gear hobbing accuracy.

[0020] The technical solutions of the embodiments of this utility model have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. An external gear shaping cutter clamping assembly, comprising a clamping seat fastened to a CNC lathe tool rest by bolts and an external gear shaping cutter clamped on the clamping seat, the external gear shaping cutter comprising a tool holder and a detachable cutting edge mounted on the front end of the tool holder and extending forward, characterized in that: The clamping base has a clamping groove, and the tool handle is detachably mounted in the clamping groove through the inclined locking assembly. The inclined locking assembly includes a locking wedge block fastened to the clamping groove by bolts and an inclined mating block that cooperates with the inclined surface of the locking wedge block. The tool handle is clamped in the clamping groove by the locking wedge block.

2. The external gear shaping cutter clamping assembly according to claim 1, characterized in that: The clamping groove is opened along the length of the tool holder. The inclined mating block, the locking wedge block and the tool holder are stacked in the clamping groove from bottom to top. The bottom surface of the locking wedge block and the top surface of the inclined mating block form an upward inclined mating. The bolt on the locking wedge block is set along the depth direction of the clamping groove. The tool holder is clamped as the bolt is tightened.

3. The external gear shaping cutter clamping assembly according to claim 2, characterized in that: The cross-section of the knife handle is square, and the longitudinal section is L-shaped. The stepped surface on the knife handle abuts against the front end face of the locking wedge.

4. The external gear shaping cutter clamping assembly according to claim 3, characterized in that: The front end of the handle has a blade mounting hole and a blade clamping hole that is perpendicular to the blade mounting hole. The blade clamping hole is a threaded hole. The blade extends into the blade mounting hole and abuts against the bottom surface of the hole. A screw is installed in the blade clamping hole, and the inner end of the screw abuts against the blade.

5. The external gear shaping cutter clamping assembly according to claim 4, characterized in that: The blade clamping holes are multiple and are arranged at intervals along the length of the blade on the bottom surface of the handle.

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