CN212144661U - A tool and lathe machining device for machining yoke coil slots of traction machine brakes - Google Patents

Abstract

The utility model relates to a cutting tool and a lathe machining device for machining a yoke coil slot of a traction machine brake. The tool includes a connecting shaft for fixing on the main shaft of the lathe and a rotary cutter body. The cutter body has two or more installation parts that protrude forward. The front end of each installation part is provided with a tool magazine, and the blade is fixed in the tool magazine. , A fan arc-shaped chip removal groove is formed between the adjacent installation parts. The radian of the outer arc of the chip removal groove is greater than the radian of the inner arc. The center of the cutter body is provided with a first cooling water channel that communicates with the rear end. There is a second cooling water channel communicating with the front end, and the first cooling water channel and the second cooling water channel are communicated through radial cooling water channels. The rotary cutter body has high strength, good stability and long service life, which greatly improves the production efficiency. The outer opening of the chip flute is large, which ensures that the iron chips are discharged in time during processing, which greatly reduces the wear rate of the tool. The lathe processing device also includes a workpiece clamping device, which uses the lever principle and has a large clamping force.

Description

A tool and lathe machining device for machining yoke coil slots of traction machine brakes

technical field

The utility model relates to the technical field of mechanical processing, in particular to a tool and a lathe processing device for processing a yoke coil slot of a traction machine brake.

Background technique

The structure of the brake yoke of the traction machine is shown in Figure 1 and Figure 2. The slot depth of the coil slot is deep, which is a deep and narrow slot, and the tolerances of each size and position are strict. At present, the machining of the brake coil slot is usually performed in the machining center. Since the milling cutter needs multiple feed milling to process the desired contour, the processing efficiency is low. If a turning and milling machine is used, although it can meet the requirements of turning and milling processing, the current turning and milling machine basically installs a moving arm on one side of the lathe, and installs the milling spindle on the moving arm to realize milling. High cost and single function.

When machining the coil groove of the brake yoke on the lathe, the common conventional turning tool is used to process the coil groove, which also has the problem of low processing efficiency, and the conventional turning tool has been criticized many times in use, such as difficulty in replacement and low stress on the tool holder. uniform, not stable enough, and short service life. In addition, when the workpiece is clamped, since the brake yoke is a cuboid workpiece and the coil slot is not in the center of the workpiece, it is inconvenient to use a chuck to clamp.

Utility model content

In order to overcome the defects of the prior art, the utility model provides a tool for machining the yoke coil slot of the brake of the traction machine, which can improve the production efficiency. The rotary cutter body is fixedly connected with the connecting shaft. The cutter body has two or more installation parts protruding forward. The front end of each installation part is provided with a blade magazine, and the blade is fixed in the blade magazine. Between the adjacent installation parts A fan arc-shaped chip removal groove is formed. The radian of the outer arc of the chip removal groove is greater than the radian of the inner arc. In the second cooling water channel, the front end of the first cooling water channel and the rear end of the second cooling water channel are communicated through radial cooling water channels.

Preferably, the front end of the knife magazine protrudes forward from the front end of the second cooling water channel.

Preferably, the tool magazines on each mounting portion are open to the counterclockwise side.

Preferably, the cutter body has four mounting parts, wherein one of the two opposite mounting parts is located outside and one is located inward, and the other two opposite mounting parts are located in the middle.

Preferably, one side wall of the chip removal groove is located in the radial direction of the cutter body, and the other side groove wall intersects with the center line of the cutter body.

Preferably, the cutter body has a central platform located inside the mounting portion, and the bottom of the chip flute is lower than the central platform.

Preferably, the connecting shaft is provided with a general cooling water channel communicating with the first cooling water channel, the connecting shaft and the cutter body are fixedly connected by connecting bolts, and a sealing ring is installed between the end faces of the connecting shaft and the cutter body.

Preferably, the radial cooling water channel communicates with the outer side of the cutter body, and a sealing bolt for sealing the radial cooling water channel is installed on the outer periphery of the cutter body.

The utility model also provides a lathe machining device that can be used on a lathe and quickly clamps the workpiece. The technical scheme adopted is: including a workpiece clamping device and a tool for machining the yoke coil slot of the tractor brake, the workpiece clamping The device includes a base plate fixed on the base of the tool rest of the lathe, a support frame, a support and a cylinder are fixed above the base plate, a connecting rod is hinged on the support, one end of the connecting rod is hinged with a floating pressure plate, and the other end of the connecting rod is connected with the connecting frame through the connecting frame. The pistons of the cylinder are connected, the connecting frame is fixed on the top of the piston, the connecting rod is provided with a strip hole, the connecting frame is fixed with a rotating shaft, the rotating shaft is inserted into the strip hole, and the floating pressure plate is located above the supporting frame, When in use, the workpiece is placed on the support frame, the cylinder piston moves upward, and the floating pressure plate presses the workpiece downward; the tool for processing the yoke coil slot of the traction machine includes a connecting shaft for fixing on the main shaft of the lathe and a connecting shaft for fixing The connected rotary cutter body has two or more installation parts protruding forward, the front end of each installation part is provided with a blade magazine, the blade is fixed in the blade magazine, and a fan arc is formed between the adjacent installation parts The radian of the outer arc of the chip flute is greater than the radian of the inner arc, the center of the cutter body is provided with a first cooling water channel that communicates with the rear end, and the installation part is provided with a second cooling water channel that communicates with the front end , the front end of the first cooling water channel and the rear end of the second cooling water channel are communicated through radial cooling water channels.

Preferably, the front end of the knife magazine protrudes forward from the front end of the second cooling water channel.

Preferably, the tool magazines on each mounting portion are open to the counterclockwise side.

Preferably, the cutter body has four mounting parts, wherein one of the two opposite mounting parts is located outside and one is located inward, and the other two opposite mounting parts are located in the middle.

Preferably, one side wall of the chip removal groove is located in the radial direction of the cutter body, and the other side groove wall intersects with the center line of the cutter body.

Preferably, the cutter body has a central platform located inside the mounting portion, and the bottom of the chip flute is lower than the central platform.

Preferably, the connecting shaft is provided with a general cooling water channel communicating with the first cooling water channel, the connecting shaft and the cutter body are fixedly connected by connecting bolts, and a sealing ring is installed between the end faces of the connecting shaft and the cutter body.

Preferably, the radial cooling water channel communicates with the outer side of the cutter body, and a sealing bolt for sealing the radial cooling water channel is installed on the outer periphery of the cutter body.

Preferably, a vertical plate is fixed on the bottom plate, the support is fixed on the top of the vertical plate, the support frame is fixed on one side of the vertical plate, and a baffle plate for preventing the horizontal movement of the workpiece is fixed on the vertical plate, so The support frame includes a horizontal support plate and a support block located below the support plate.

Due to the implementation of the above technical solutions, the utility model has the following technical effects compared with the prior art: the tool of the present utility model can be directly fixed on the main shaft of the lathe, the tool installation and replacement are convenient, the rotary tool body has high strength, and is stable. It has a long service life, greatly improves the production efficiency, and solves the problem of low processing efficiency of the brake coil slot. The outer opening of the chip flute is large, which ensures that the iron chips are discharged in time during processing, which greatly reduces the wear rate of the tool.

Further, the workpiece clamping device utilizes the lever principle, with large clamping force and fast clamping.

Description of drawings

Fig. 1 is the front view of the existing brake yoke structure;

Fig. 2 is the sectional view of the existing brake yoke structure;

3 is a schematic structural diagram of a tool for machining a yoke coil slot of a traction machine brake according to the present invention;

Figure 4 is a cross-sectional view of a tool;

Figure 5 is a front view of the tool;

Fig. 6 is the structural representation of cutter body;

Figure 7 is a left side view of the cutter body;

Fig. 8 is B-B sectional view in Fig. 7;

Fig. 9 is the enlarged view of A place in Fig. 8;

Figure 10 is a front view of the cutter body;

Figure 11 is a C-C sectional view in Figure 10;

Fig. 12 is the use state diagram of the tool;

13 is a schematic structural diagram of the lathe processing device of the present invention;

In the figure: 1-tool body, 101-installation part, 102-tool chamber, 102'-first tool chamber, 102"-second tool chamber, 102"'-third tool chamber, 103-chip flute, 104 -1st cooling water channel, 105-second cooling water channel, 106-radial cooling water channel, 107-center platform, 2-connecting shaft, 201-general cooling water channel, 3-blade, 4-sealing bolt, 5-sealing ring, 6- Lathe spindle connecting plate, 7- Lathe tool rest base, 8- Lathe slide, 9- Workpiece clamping device, 10- Work piece.

Detailed ways

The technical solutions of the present utility model will be described in detail below through specific embodiments.

Example 1

As shown in FIGS. 3 to 12 , the tool for machining the yoke coil slot of the traction machine brake of the present invention includes a connecting shaft 2 fixed on the main shaft of the lathe and a rotary cutter body 1 fixedly connected with the connecting shaft 2 , the cutter body 1 has more than two mounting parts 101 protruding forward, the front end of each mounting part is provided with a knife magazine 102, the blade 3 is fixed in the knife magazine 102, and a fan arc is formed between the adjacent mounting parts 101 The radian of the outer arc of the chip flute 103 is larger than the radian of the inner arc, that is, the outer opening of the chip flute 103 is larger, so as to prevent the "jamming" phenomenon that the iron chips cannot be discharged in time during processing. . The center of the cutter body 1 is provided with a first cooling water channel 104 that communicates with the rear end, the mounting portion 101 is provided with a second cooling water channel 105 that communicates with the front end, the front end of the first cooling water channel 104 and the rear end of the second cooling water channel 105 They are communicated with each other through the radial cooling water channel 106 . In this embodiment, preferably, the front end of the knife magazine 102 protrudes forward from the front end of the second cooling water channel 105 , that is, the front end surface of the mounting portion 101 is a stepped surface. The tool magazines 102 on each mounting portion 101 are open to the counterclockwise side. There are four mounting parts 101 on the cutter body 1, wherein the first tool magazine 102' on the two opposite mounting parts is arranged outside, the second tool magazine 102'' is arranged inside, and the other two opposite mounting parts are arranged on the outside. The third magazine 102 ″″ is located in the middle of the mounting portion 101 .

Preferably, one side of the flute wall of the chip removal groove 103 is located in the radial direction of the cutter body 1, and the other side flute wall intersects with the center line of the cutter body 1 to form an included angle of N°. The cutter body 1 has a central platform 107 located inside the mounting portion, and the groove bottom of the chip flute 103 is rearwardly lower than the plane where the central platform 107 is located.

Preferably, the connecting shaft 2 is provided with a total cooling water channel 201 that communicates with the first cooling water channel 104 , the connecting shaft 2 and the cutter body 1 are fixedly connected through a flange structure and connecting bolts, and the end face of the connecting shaft 2 that is connected to the cutter body 1 A sealing ring 5 is installed between them. The radial cooling water channel 106 communicates with the outside of the cutter body 1, and the outer periphery of the cutter body 1 is provided with a sealing bolt 4 for sealing the radial cooling water channel 106 to prevent the cooling water from flowing out from the side of the cutter body during machining.

When in use, the connecting shaft 2 of the tool is connected with the main shaft of the lathe through interference fit, and then the tool is fixed on the main shaft connection plate 6 of the lathe through the pressing plate and the fixing bolt, and the main shaft connection plate 6 of the lathe is fixedly connected to the main shaft of the lathe. In this way, the tool replacement is convenient, and the tool processing efficiency is high and the service life is long.

Example 2

As shown in FIG. 13 , the lathe machining device includes a workpiece clamping device 9 and a tool for machining the yoke coil slot of the hoisting machine brake in the first embodiment. The workpiece quick clamping device includes a base plate fixed on the base 7 of the lathe tool holder, a support and a cylinder fixed above the base plate, a connecting rod is hinged on the support, one end of the connecting rod is hinged with a floating pressure plate, and the other end of the connecting rod is connected by The frame is connected with the piston of the cylinder, the connecting frame is fixed on the top of the piston, the connecting rod is provided with a strip hole, the connecting frame is fixed with a rotating shaft, and the rotating shaft is inserted into the strip hole. The side of the floating pressing plate close to the support is protruded downward to form a stepped structure. A support block is also fixed above the bottom plate, a horizontal support plate is fixed on the top of the support block to form a support frame, and the floating pressure plate is located just above the support frame. In this embodiment, a vertical plate is welded and fixed on the bottom plate, a triangular plate is welded between the vertical plate and the bottom plate, the support is fixed on the top of the vertical plate, the support frame is fixed on one side of the vertical plate, and the vertical plate is fixed on the vertical plate. There are baffles to prevent the workpiece from moving horizontally to one side. The connecting rod is connected with a floating pressure plate, a support and a connecting frame respectively through the rotating shafts formed by the clearance fit of the pins. The angle between the connecting rod and the floating pressure plate is an acute angle, and the distance between the support and the connecting frame is greater than that of the support. Distance from floating platen. The cylinder block of the cylinder is fixed on the backing plate, and the backing plate is fixed on the bottom plate by bolts. The bottom plate is fixed on the lathe tool rest base 7 by bolts, the lathe tool rest base 7 is fixed above the lathe slide 8, and the top of the lathe tool rest is fixed with a turning tool rest. The lathe tool rest base 7 and the lathe slide 8 belong to the lathe parts. The workpiece 10 to be processed is a brake yoke, and the cylinder adopts a thin cylinder with a guide rod.

When in use, place the workpiece on the support plate of the support frame, the cylinder piston moves up, and lifts one end of the connecting rod upward. According to the lever principle, the floating pressure plate at the other end of the connecting rod clamps the workpiece downward, and the clamping force is large. Grooving is then performed by a tool attached to the lathe spindle.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit of the technical solutions of the embodiments of the present invention and range.

Claims (10)

1. a tool for processing the yoke coil slot of a traction machine brake is characterized in that: comprising a connecting shaft for being fixed on the main shaft of a lathe and a rotary cutter body that is fixedly connected with the connecting shaft, and the cutter body has more than two The forwardly protruding installation parts of each installation part are provided with a knife magazine, a blade is fixed in the knife magazine, a fan arc-shaped chip removal groove is formed between the adjacent installation parts, and the radian of the outer arc of the chip removal groove is formed. Greater than the radian of the inner arc, the center of the cutter body is provided with a first cooling water channel communicating with the rear end, the installation part is provided with a second cooling water channel communicating with the front end, the front end of the first cooling water channel and the rear of the second cooling water channel are provided. The ends are communicated through radial cooling water channels. 2 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 , wherein the front end of the tool magazine protrudes forward from the front end of the second cooling water channel. 3 . 3 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 , wherein the tool magazines on each mounting portion are open to the counterclockwise side. 4 . 4. The tool for machining a yoke coil slot of a hoisting machine brake according to claim 1, 2 or 3, wherein the tool body has four mounting parts, wherein two opposite mounting parts are provided with a knife One of the magazines is on the outside and one is on the inside, and the tool magazines on the other two opposite installation parts are located in the middle. 5 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 , wherein one side wall of the chip removal groove is located in the radial direction of the tool body, and the other side wall is in the radial direction of the tool body. 6 . The centerlines of the cutter bodies intersect. 6 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 or 5 , wherein the tool body has a central platform located inside the mounting portion, and the bottom of the chip removal groove is lower than the central platform. 7 . 7 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 , wherein the connecting shaft is provided with a general cooling water channel that communicates with the first cooling water channel, and the connecting shaft and the cutter body are connected by . 8 . The bolt is fixedly connected, and a sealing ring is installed between the connecting shaft and the end face of the cutter body. 8 . The tool for machining the yoke coil slot of a traction machine brake according to claim 1 , wherein the radial cooling water channel communicates with the outer side of the tool body, and the outer periphery of the tool body is provided with a tool for sealing the radial cooling water. 9 . Sealing bolts for water channels. 9. A lathe processing device, characterized in that it comprises a workpiece clamping device and the tool for machining the yoke coil slot of a traction machine brake according to any one of claims 1 to 8, and the workpiece clamping device comprises a tool fixed on the lathe The bottom plate on the base of the frame, a support frame, a support and a cylinder are fixed above the base plate, a connecting rod is hinged on the support, one end of the connecting rod is hinged with a floating pressure plate, and the other end of the connecting rod is connected with the piston of the cylinder through the connecting frame. The connecting frame is fixed on the top of the piston, the connecting rod is provided with a bar-shaped hole, the connecting frame is fixed with a rotating shaft, and the rotating shaft is inserted into the bar-shaped hole, and the floating pressure plate is located above the supporting frame. On the support frame, the cylinder piston moves upward, and the floating pressure plate presses the workpiece downward. 10. The lathe processing device according to claim 9, wherein a vertical plate is fixed on the bottom plate, the support is fixed on the top of the vertical plate, the support frame is fixed on one side of the vertical plate, and the vertical plate is fixed on the top of the vertical plate. A baffle plate for preventing the horizontal movement of the workpiece is fixed on the plate, and the support frame includes a horizontal support plate and a support block located under the support plate.

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