A tool for facilitating thread turning of a hole in a motor

Abstract

The utility model relates to a tool convenient to motor hole thread turning belongs to metal cutting technical field, main cutter body is fixed in lathe through cylindrical connecting part, its inside is equipped with horizontal cooling channel intercommunication and is connected with pair distribution C type upper spout pipe and lower spout, realizes the cutting area two -way accurate cooling, rotatory cutter body rotatably sets up in main cutter body, and the rear end hexagonal adjustment groove cooperation dial realizes the inclination stepless regulation, and after the pre -fixed angle of locking bolt push -pull support body, by rotatory body locking bolt final lock, the thread turning tool has both sides cutting edge and chip groove, and the working blade is switched through rotatory cutter body 180, and the utility model has the advantages that: the rotation center and the cutter tip coincide to ensure the height zero offset, the dial realizes accurate positioning, both sides cutting edge cooperation double spout eliminates the chip winding, single tool adapts multi -specification thread processing, and the tool inventory cost reduces, the positive and negative direction turning efficiency improves, and prolongs the tool life.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to an adjustable thread cutting tool device. Background Technology

[0002] As a critical assembly structure, the machining quality of the internal thread of the motor directly affects the motor's performance and lifespan. Traditional machining methods mainly suffer from the following technical bottlenecks:

[0003] Poor tool compatibility: Different models of motors require specific thread helix angles to match their inner holes. Each time a thread specification is changed, a special cutting tool must be replaced, resulting in a large variety of tool inventory, which significantly increases production costs and management burden.

[0004] Cooling and chip removal are difficult: the inner hole space is narrow, and traditional external cooling methods are difficult to effectively cover the cutting area, which can easily cause tool overheating and failure; at the same time, the long spiral chips generated by intermittent cutting are very easy to wrap around the tool, scratch the workpiece surface, and increase the scrap rate.

[0005] Low angle adjustment efficiency: Existing adjustable fixtures mostly use shims or wedges to adjust the tool tilt angle. Each adjustment requires recalibrating the tool tip center height, and the tool setting operation takes up more than 30% of the machining cycle. Utility Model Content

[0006] To solve the above problems, this utility model discloses a tooling for facilitating the turning of internal threads in motors.

[0007] The specific technical solution is as follows:

[0008] A tooling for facilitating thread turning of an internal hole in a motor includes: a main cutting body with a cylindrical connecting part at one end for fixed connection to a machine tool; an internal cooling device penetrating the interior of the main cutting body, comprising a horizontal cooling channel and a threaded connection port at one end for connecting to an external coolant source; two C-shaped upper spray pipes connecting to the upper end of the cooling channel with their outlets facing the cutting edge of the cutting tool; a lower spray nozzle located at the lower front end of the main cutting body with its outlet facing the cutting edge of the cutting tool; a rotating cutting body rotatably mounted in a circular slot in the main cutting body; a hexagonal adjustment slot at the rear end of the rotating cutting body; an adjustment mechanism including a scale on the front end face of the main cutting body; a locking bolt that pre-fixes the angle by pushing a support body against the rotating cutting body; and a locking bolt that finally locks the rotating cutting body; a threading tool mounted on the front end of the rotating cutting body and fixed by a locking screw; wherein the central axis of the rotating cutting body coincides with the tip of the threading cutting tool; the cutting edge of the threading cutting tool has cutting surfaces on both sides, namely the rake angle and the clearance angle of the threading cutting tool, and a chip removal groove is provided on one side of the clearance angle.

[0009] The rotating cutter body is driven to rotate by inserting a hexagonal wrench into the adjustment slot, and the tilt angle is positioned by a dial.

[0010] The support body is axially pushed by the locking bolt and radially presses against the outer wall of the rotating cutter body.

[0011] The advantages of this utility model are:

[0012] The stepless angle adjustment mechanism of the rotating tool body and the dial enables a single thread turning tool to accurately adapt to the machining requirements of different thread helix angles, significantly reducing tool inventory costs. The integrated dual-path internal cooling system precisely covers the cutting zone, and the high-pressure coolant simultaneously solves the problems of tool overheating, chip entanglement, and workpiece scratches. The coaxial design of the rotation center and the tool tip, combined with the real-time angle feedback of the dial, ensures zero deviation in tool tip height when adjusting the tilt angle, completely eliminating the time wasted on repeated tool setting, and improving machining efficiency while improving the surface quality of the thread. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the positional relationship between the thread cutting tool and the main tool body.

[0015] Figure 3 This is a schematic diagram of the hexagonal adjustment groove.

[0016] Figure 4 This is a schematic diagram of a thread-cutting tool. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] A tooling for facilitating thread turning of an internal hole in a motor includes: a main cutter body 2, with a cylindrical connecting part 1 at one end for fixed connection to a machine tool; an internal cooling device penetrating the interior of the main cutter body 2, including a horizontal cooling channel 3, with a threaded connection port at one end for connecting to an external coolant source; two C-shaped upper spray pipes 4 connecting to the upper end of the cooling channel 3 with their outlets facing the cutting edge of the cutting tool; a lower spray nozzle 7 located at the lower front end of the main cutter body 2 with its outlet facing the cutting edge of the cutting tool; a rotating cutter body 13 rotatably mounted in a circular slot in the main cutter body 2; and a hexagonal adjustment mechanism at the rear end of the rotating cutter body 13. The tool includes a groove 15; an adjustment mechanism including a dial 11 on the front end face of the main tool body 2; a locking bolt 9 that pushes the support body 10 to press against the rotating tool body 13 to achieve angle pre-fixation; a rotating body locking bolt 12 that finally locks the rotating tool body 13; a threading tool 5 installed on the front end of the rotating tool body 13 and fixed by a locking screw 6; wherein the central axis of the rotating tool body 13 coincides with the tip of the threading tool 5; the threading tool 5 has cutting surfaces on both the left and right sides of its cutting edge, namely the rake angle 5a and the clearance angle 5b of the threading tool 5, and a chip removal groove 5c is provided on one side of the clearance angle.

[0019] The rotating blade 13 is driven to rotate by inserting a hexagonal wrench into the adjustment slot 15, and the tilt angle is positioned by the dial 11.

[0020] The support body 10 is axially pushed by the locking bolt 9 and radially presses against the outer wall of the rotating cutter body 13.

[0021] The working principle of this utility model is as follows:

[0022] Before machining, according to the requirements of thread direction and helix angle, insert a hex wrench into the adjustment slot 15 of the rotating cutter body 13 to drive its rotation, and accurately set the tool tilt angle through the scale 11; tighten the locking bolt 9 to push the support body 10 to radially press the rotating cutter body 13 to achieve pre-fixation, and then tighten the rotating body locking bolt 12 to complete the final locking. At this time, the central axis of the rotating cutter body 13 coincides with the tool tip, ensuring zero deviation of the tool tip height when adjusting the tilt angle; during machining, the rake angle 5a and clearance angle 5b of the left and right cutting edges are used for thread machining through different feed directions, and the chip removal groove 5c guides the chips to be discharged in a directional manner to achieve double-sided cutting. The external coolant is diverted through the horizontal channel 3 to the double-sided C-shaped upper spray pipe 4 and lower spray nozzle 7, and is accurately sprayed to the cutting area to achieve cooling and chip breaking, realizing dual-path cooling and timely chip removal; multi-specification thread machining can be completed in a single clamping, completely eliminating the time wasted on repeated tool setting and tool changing.

Claims

1. A tooling for facilitating the turning of internal threads in a motor, characterized in that, include: The main cutter body (2) has a cylindrical connecting part (1) at one end for fixed connection with the machine tool; the internal cooling device penetrates the interior of the main cutter body (2) and includes a horizontal cooling channel (3), with a threaded connection port at one end for connecting to an external coolant source; two C-shaped upper spray pipes (4) connect to the upper end of the cooling channel (3) and the outlet faces the cutting edge of the cutting tool; the lower spray port (7) is located at the lower front end of the main cutter body (2) and the outlet faces the cutting edge of the cutting tool; the rotating cutter body (13) is rotatably set in the circular slot of the main cutter body (2); the rear end of the rotating cutter body (13) is provided with a hexagonal adjustment slot (15); the adjustment mechanism includes a hexagonal adjustment slot (15) located at the rear end of the main cutter body (2). The dial (11) on the front end face of the tool body (2); the locking bolt (9) achieves angle pre-fixation by pushing the support body (10) to hold the rotating tool body (13); the rotating body locking bolt (12) finally locks the rotating tool body (13); the thread cutting tool (5) is installed on the front end of the rotating tool body (13) and fixed by the locking screw (6); wherein, the central axis of the rotating tool body (13) coincides with the tip of the thread cutting tool (5); the cutting edge of the thread cutting tool (5) is provided with cutting surfaces on both the left and right sides, namely the front angle (5a) and the rear angle (5b) of the thread cutting tool (5), and a chip removal groove (5c) is provided on one side of the rear angle.

2. The tooling for facilitating the turning of internal threads in motor holes according to claim 1, characterized in that: The rotating blade (13) is driven to rotate by inserting a hexagonal wrench into the adjustment slot (15), and the tilt angle is positioned by the dial (11).

3. The tooling for facilitating the turning of internal threads in motor holes according to claim 1, characterized in that: The support (10) is axially pushed by the locking bolt (9) and radially presses against the outer wall of the rotating cutter body (13).

Images