CN222608057U - Lathe tool pole convenient to motor parts processing - Google Patents

Abstract

The utility model discloses a turning tool bar which is convenient for machining motor parts, comprising a tool body, an internal cooling device, an angle sleeve and a pressure cap; a blade groove is arranged at the head of the tool body, and the turning tool is arranged in the blade groove and is pressed by the pressure cap; an internal cooling device is arranged in the tool body; the internal cooling device comprises an upper nozzle arranged at the upper part of the tool body and a lower nozzle arranged at the front end of the tool body; the upper nozzle and the lower nozzle are both connected with the cooling water channel in the tool body; the cross section of the angle sleeve is triangular, and is fixed to the machine tool after being closely attached to the side of the tool body. The advantages of the utility model: reducing production costs; the internal cooling device not only solves the problem of overheating during machining well and improves cutting performance, but also uses high-pressure cooling water to flush away the cuttings, which solves the problem of long chips well.

Description

Lathe tool pole convenient to motor parts processing

Technical Field

The utility model relates to the technical field of mechanical manufacturing, in particular to the technical field of metal cutting, and more particularly relates to a cutter bar.

Background

The motor shaft and the motor end cover are taken as one of main components of the motor, and the production cost and the efficiency of the motor directly influence the profit of the motor. The motor shaft has high surface quality requirement, long and narrow cutting chip in the traditional machining mode, is extremely easy to scratch the surface, is difficult to achieve high efficiency and low vibration in different types of motor shafts, is often required to design chamfering angles of 15 degrees, 20 degrees and the like for better assembly of parts such as bearings, is difficult to turn a common machine tool, and the service life of a cutter is inevitably reduced because most of chamfering parts are stress concentration areas. When the inner diameter of the motor end cover is machined by the traditional vertical lathe, due to the cast iron material, the blank inevitably has sand holes, irregular surfaces, casting absence and other reasons, the turning blade is cut intermittently. The service life of the tool is seriously affected.

Disclosure of utility model

In order to solve the problems, the utility model discloses a lathe cutter bar convenient for machining motor parts, which comprises the following specific technical scheme:

A turning tool rod convenient for machining motor parts comprises a tool body, an internal cooling device, an angle sleeve and a pressing cap, wherein a tool body head is provided with a tool groove, a turning tool is arranged in the tool groove and is pressed by the pressing cap, the internal cooling device is arranged in the tool body and comprises an upper spray pipe arranged on the upper part of the tool body and a lower spray pipe arranged at the front end of the tool body, the upper spray pipe and the lower spray pipe are both communicated with a cooling water channel in the tool body, the section of the angle sleeve is triangular, and the angle sleeve is tightly attached to the side part of the tool body and then fixed with a machine tool.

The number of the lower nozzles is 2, and the lower nozzles are arranged on the adjacent surface of the front end of the cutter body.

The water outlet of the upper spray pipe and the lower spray pipe face the cutting edge of the turning tool.

The cooling water channel is horizontally arranged, and the front end of the cooling water channel is respectively connected with the tail end of the cooling water channel communicated with the lower nozzle and the upper nozzle and the water nozzle.

The upper spray pipe is C-shaped, the lower end of the upper spray pipe is provided with threads, the upper spray pipe is connected to a connecting pipe in the vertical direction, the connecting pipe is connected with a vertical water channel, and the vertical water channel is connected with a cooling water channel.

The cutter body head is provided with a blade groove for installing a C-shaped 100-degree negative rake angle blade, so that the main deflection angle is 76 degrees, and the inclination angle of the vertical rake angle and the blade is-5 degrees.

The utility model has the advantages that the production cost is reduced, the cutter bar of the utility model only adopts the cutter tip of the C-shaped cutter blade with an acute angle of 80 degrees, the cutter bar of the utility model adopts an obtuse angle of 100 degrees, an upper cooling device and a lower cooling device arranged on the cutter bar with an obtuse angle, not only well solves the overheat problem during processing and improves the cutting performance, but also well solves the long cutting problem by utilizing high-pressure cooling water, and the utility model has the advantages that the high-feed turning is used for 4 degrees of main deflection angle, the main deflection angle of 76 degrees is used for long overhanging parts or thin-wall parts during reverse cutting, sand holes, irregular surfaces, casting defects and the like are unavoidable on the blank of the motor end cover, the cutter life of the cutter blade can be well prolonged due to the intermittent cutting of the cutter blade, the strong cutter tip with an obtuse angle of 100 degrees, and the chamfer angles of 20 degrees are often designed for better assembly of parts such as bearings, the chamfer with the angles of 15 degrees and 20 degrees is difficult for common machine tool turning, and the chamfer part is mostly stress concentrated, and the service life of the cutter is reduced. The problem is solved well by means of an angle sleeve specially designed for such a knife bar.

Drawings

FIG.1 is a block diagram of the present utility model;

FIG. 2 is a schematic illustration of forward and reverse cutting;

FIG. 3 is a schematic perspective view of a cutter body according to the present utility model;

FIG. 4 is a front view of the cutter body;

FIG. 5 is a left side view of FIG. 4;

In the figure, 1 is a cutter body, 2 is a turning tool, 3 is a blade groove, 4 is an angle sleeve, 5 is a press cap, 6 is an upper spray pipe, 7 is a lower spray pipe, 8 is a cooling water channel, 10 is a workpiece to be processed, 81 is a vertical water channel, 83 is a connecting pipe, and 84 is a water nozzle.

Detailed Description

The utility model is specifically described below with reference to the accompanying drawings, as shown in the drawing, the utility model comprises a cutter body 1, an internal cooling device, an angle sleeve 4 and a pressing cap 5, wherein the head of the cutter body is provided with a cutter groove 3, a turning tool 2 is arranged in the cutter groove and is pressed by the pressing cap 5, the internal cooling device is arranged in the cutter body, the internal cooling device comprises an upper spray pipe 6 arranged at the upper part of the cutter body and a lower spray pipe 7 arranged at the front end of the cutter body, the upper spray pipe 6 and the lower spray pipe 7 are both communicated with a cooling water channel 8 in the cutter body, the section of the angle sleeve 4 is triangular, and the angle sleeve is tightly attached to the side part of the cutter body and then fixed with a machine tool.

The number of the lower nozzles 7 is 2, and the lower nozzles are arranged on the adjacent surface of the front end of the cutter body.

The water outlet of the upper spray pipe and the lower spray pipe face the cutting edge of the turning tool.

The cooling water channel 8 is horizontally arranged, the front end of the cooling water channel is respectively communicated with the lower nozzle 7 and the upper nozzle 6, and the tail end of the cooling water channel is connected with the water nozzle 84.

The upper spray pipe 6 is C-shaped, the lower end of the upper spray pipe is provided with threads, the threads are connected to a connecting pipe 83 in the vertical direction, the connecting pipe 83 is connected with a vertical water channel 81, and the vertical water channel 81 is connected with a cooling water channel 8. The transverse water channel 82 is connected with the cooling water channel 8 while being communicated with the two lower nozzles.

The cutter body head is provided with a blade groove for installing a C-shaped 100-degree negative rake angle blade, so that the main deflection angle is 76 degrees, and the inclination angle of the vertical rake angle and the blade is-5 degrees.

The utility model provides a unique 3-nozzle internal cooling system for the cutter bar, namely, the upper spray pipe 6 can be a copper pipe and is C-shaped, and the nozzle can be directly aligned with a cutting area of a rake face to provide high-precision cutting fluid, so that chip breaking is better controlled and safe machining is ensured. Aiming at the capability of different machine tools and the characteristics of different part materials, the cutter service life can be further prolonged and the chip forming effect can be improved by changing the diameter of the nozzle to finely adjust the flow rate and the flow velocity of the cutting fluid and the injection angle.

The cooling liquid of the lower 2 lower nozzles 7 is sprayed out, so that the service life of the cutter can be prolonged, and the yield can be improved by improving the cutting speed or feeding.

Under the action of cooling the upper end and the lower end, the chip can be rough machined or finish machined, and the generated chips can be short and have no chip winding effect although the shapes of the generated chips are different in the process of excircle turning, end face turning and profile turning.

Through repeated testing, a set of optimal application strategies as to when to start up the upper cutting fluid, or the lower cutting fluid, or both, are also summarized.

1) For thin-coated steel blades in scrap blades, it is desirable to use both the upper and lower cutting fluids to provide thermal protection to the blade and to avoid plastic deformation

2) And processing the blade of the cast iron type part for thick coating. The thick coating has good thermal protection performance, and meanwhile, the chip breaking effect of the parts made of the material is good. Therefore, the best knife cutting effect can be realized only by matching with the lower cutting fluid.

3) For thinner coated machined stainless steel type inserts, it is suggested to use both the upper and lower cutting fluids. However, if crater wear occurs in the application, it is recommended to use only the lower cutting fluid, which may result in a longer tool life.

Regarding the angle sleeve 4 of the cutter, when the efficiency needs to be improved, smaller Kr is applied to cutting through the angle sleeve, and if long overhanging or thin-wall parts are encountered, larger Kr is used to cut the parts, and the larger Kr is, the greater the vibration trend of the cutter is. When the working condition is stable and the efficiency needs to be improved, kr4 can be used for high-feed turning, and when long overhanging parts or thin-wall parts are encountered, kr76 degrees is used.

A common chamfer of the motor shaft is mostly 45 degrees. However, in order to assemble parts such as bearings better, chamfering angles of 15 degrees and 20 degrees are often designed, which is difficult for turning of a common machine tool, and most of the chamfering parts are stress concentration areas, so that the service life of a cutter is inevitably reduced. The problem can be solved well by using an angle sleeve specially designed for such a cutter bar.

The C-shaped blade is most widely applied to machining rooms, and the blade is discarded after the sharp angle of 80 degrees is used up. To verify the feasibility of using a 100 degree tip. The team takes parts produced in workshops as test objects, through more than 1 year of design research, the optimal design of the cutter bar is finally completed, the current test is repeatedly carried out, and finally the optimal cutter design data are obtained, and the corresponding cutter data are shown in Table 1.

TABLE 1

1	Cutting edge angle (KAPR)	76deg
			2	Tool lead angle (PSIR)	14deg
3	Maximum Overhang (OHX)	45
			4	Rotary direction (HAND)	Left or right hand
5	Width of handle (B)	32mm
			6	Height of handle (H)	32mm
7	Functional Length (LF)	160mm
			8	Working Width (WF)	27.2mm
9	Working Height (HF)	32mm
			10	Vertical rake (GAMO)	-5
11	Blade angle (LAMS)	-5
			12	Clamping mechanism	Strong force type

Finally, the most widely used turning of steel parts for a metalworking shop is suggested by 1) the use of lower cutting fluids is recommended at any time, which can extend the tool life.

2) When improved chip control is required, the chip liquid is simultaneously opened up and down.

Claims (4)

1. A turning tool rod convenient for machining motor parts comprises a tool body, an internal cooling device, an angle sleeve and a pressing cap, wherein a tool groove is formed in the head of the tool body, a turning tool is arranged in the tool groove and is pressed by the pressing cap, the cross section of the angle sleeve is triangular and is fixed with a machine tool after being tightly attached to the side part of the tool body.

2. The turning tool bar for facilitating machining of motor parts according to claim 1, wherein the water outlet of the upper spray pipe and the water outlet of the lower spray pipe face the cutting edge of the turning tool.

3. The turning tool bar for facilitating machining of motor parts according to claim 1, wherein the cooling water channel is horizontally arranged, and the front end of the cooling water channel is respectively connected with the lower nozzle and the tail end of the upper nozzle, which are communicated with the cooling water channel, and the water nozzle.

4. The turning tool bar for facilitating machining of motor parts according to claim 1, wherein the upper spray pipe is C-shaped, threads are arranged at the lower end of the upper spray pipe and connected to a connecting pipe in the vertical direction, the connecting pipe is connected with a vertical water channel, and the vertical water channel is connected with a cooling water channel.