CN109079198B - Propeller taper hole processing device - Google Patents

Abstract

The invention discloses a propeller taper hole processing device, which comprises a base, a rotating mechanism, a feeding mechanism and a digital display measuring mechanism, wherein the base is provided with a plurality of screw holes; the base is fixed on the foundation, the rotating mechanism is vertically supported on the upper side of the base and comprises a first servo motor, a rotating disc, a connecting disc and a boring bar; the feeding mechanism comprises a feeding driving unit and a feeding cutting unit, the feeding driving unit comprises a second servo motor, a second gear shaft, a third gear shaft, a ball cage universal joint and an overload clutch, and the feeding cutting unit comprises a ball screw, a nut seat, a cutter holder, a cutter and a double-row linear rolling guide rail; the digital display measuring mechanism is arranged on one side of the boring bar mounting groove. The invention has the advantages of simple structure, low cost, convenient operation, time and labor saving, safety and reliability, low requirement on the skills of operators, and shortened manufacturing period of products while improving the working efficiency.

Description

Propeller taper hole processing device

Technical field

The invention relates to a taper hole processing device, in particular to a processing device for processing taper holes of large marine propellers, and belongs to the technical field of mechanical processing equipment.

Background technique

The taper hole of a large marine propeller not only has a particularly large diameter, but also requires particularly high processing accuracy for the taper hole, which requires a processing device with particularly good performance. The existing taper holes of marine propellers are mostly processed by large vertical lathes. This processing equipment is not only bulky and has low processing efficiency, but also it is difficult to ensure the processing accuracy of the taper holes. After processing, a scraper or a small grinding wheel is usually required. Only by grinding can the accuracy of the taper hole meet the requirements. There is also a taper hole processing device. The boring bar shaft (sliding screw) of this device is connected with a guide rail slide block, and the boring bar is fixed on the guide rail slide block. When processing the taper hole, the machine tool spindle drives the boring bar device to rotate, and the guide rail The slider drives the boring bar to move up and down to complete cutting. This device can process the tapered hole of a large-sized propeller. However, since the guide rail surfaces on both sides of the guide rail slider slide in the guide rail, the guide rail surfaces on both sides are easy to wear. After wear, the center of the guide rail slider will occur. Deviation, the center of the boring bar installed on the guide rail slider will deviate accordingly. It is also difficult to ensure the taper and processing accuracy of the taper hole. It is still necessary to use a scraper or a small grinding wheel for grinding to ensure the accuracy of the taper hole. Meet the requirements. The above two processing devices are not only risky, but also labor-consuming and time-consuming. They require repeated operations and are cumbersome. At the same time, they also require high skills of the operators, which greatly increases the manufacturing cost of the propeller and prolongs the manufacturing cycle.

Contents of the invention

The object of the present invention is to provide a propeller taper hole processing device that has a simple structure, is easy to operate, saves time and effort, has high processing efficiency and high processing precision.

The present invention is realized through the following technical solutions:

A propeller taper hole processing device includes a base, a rotating mechanism, a feeding mechanism and a digital measurement mechanism; the base is fixed on the foundation, the rotating mechanism is vertically supported on the upper side of the base, and the rotating mechanism includes a first Servo motor, rotating plate, connecting plate and boring bar. The first servo motor is vertically fixed on one side of the base. The rotating plate, connecting plate and boring bar are arranged vertically on the upper side of the base in sequence from bottom to top. The rotating plate passes through The bearing is supported on the upper side of the base, the internal gear of the rotating plate meshes with the first gear shaft on the output shaft of the first servo motor, and the bottom and top of the connecting plate are fixedly connected to the top of the rotating plate and the bottom of the boring bar respectively; the feed mechanism It includes a feed drive unit and a feed cutting unit. The feed drive unit includes a second servo motor, a second gear shaft, a third gear shaft, a ball cage universal joint and an overload clutch. The second servo motor is vertically fixed in the middle of the base. Inside, the lower end of the second gear shaft is fixedly connected to the output shaft of the second servo motor through a coupling, the middle part of the second gear shaft is supported on the middle part of the bottom of the connecting plate, the second gear shaft and the third gear shaft mesh with each other, and the third gear shaft It is supported on the bottom side of the connecting plate, and the upper end of the third gear shaft is fixedly connected to the lower end of the overload clutch through the ball cage universal joint; the feed cutting unit is set in the installation groove on the side of the boring bar, and the feed cutting unit includes a ball screw. , nut seat, tool seat, cutting tool and double-row linear rolling guide rail. The upper and lower ends of the ball screw are respectively supported on the support seats at the upper and lower ends of the boring bar installation slot. The lower end of the ball screw is firmly connected to the upper end of the overload clutch, and the nut seat is screwed on On the ball screw, the tool seat is fixed on the nut seat, and the cutting tool is vertically fixed on the tool seat. Both sides of the tool seat are fixedly supported on the slide blocks of the double-row linear rolling guide rails. The double-row linear rolling guide rails are fixed in parallel on the boring machine. The step surfaces on both sides of the rod installation groove; the digital display measuring mechanism is arranged on one side of the boring bar installation groove.

The object of the present invention can also be further achieved through the following technical measures.

In the aforementioned propeller taper hole processing device, the digital measurement mechanism includes a magnetic scale, a reading head and a display. The magnetic scale is fixed on one side of the boring bar installation slot, the reading head is fixed on one side of the tool holder, and the display Connected to the readhead.

In the aforementioned propeller taper hole machining device, the upper and lower sides of the tool holder are respectively provided with guards, and the two ends of the guard are respectively fixedly connected to one side of the tool holder and one end of the boring bar; the guard is a spring steel rolling shutter type guard.

In the aforementioned propeller taper hole processing device, the boring bar is tapered, and a lifting ring is provided on the top of the boring bar.

In the aforementioned propeller taper hole processing device, the angle between the center line of the ball screw and the center line of the boring bar is 0.5° to 2°.

The invention realizes the processing of the propeller taper hole through the rotational motion of the boring bar and the up and down linear motion of the tool holder. It has a simple structure and low cost. During use, the invention only needs to be hoisted into the propeller taper hole for processing, and the operation is convenient. It saves time and effort, is safe and reliable, and does not require high skills for operators. It improves work efficiency and shortens the product manufacturing cycle. The two sides of the tool holder are respectively supported on the slide blocks of the double-row linear rolling guide, which can ensure that the center of the cutting tool will not deviate, thus ensuring the accuracy of the propeller taper hole machining. The ball screw and the third gear shaft are connected by a ball. The cage universal joint transition can compensate for the relative displacement between the two during installation and operation, which can well ensure the transmission accuracy and speed. In addition, there is an overload clutch at the lower end of the ball screw. When an overload occurs during processing, the torque is transmitted When the set value is exceeded, the overload clutch automatically disengages, which can effectively protect the ball screw and cutting tools from damage. After the overload is eliminated, it can be manually reset through the lever. The digital display measuring mechanism on one side of the boring bar installation slot can easily measure the length and size of the oil groove in the propeller taper hole. The measurement is accurate and reliable. There are guards on the upper and lower sides of the tool holder to prevent copper chips or copper powder from splashing during the processing. Cause damage to the surface of the double-row linear rolling guide and ball screw. The invention can effectively ensure the processing accuracy of the propeller taper hole, can achieve the required accuracy requirements without grinding after processing, and has high processing efficiency.

The advantages and features of the invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a left view of Figure 1;

Figure 3 is a schematic diagram of processing a propeller taper hole using the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and examples.

As shown in Figure 1, the present invention includes a base 1, a rotating mechanism 2, a feeding mechanism 3 and a digital measuring mechanism 4. The base 1 is fixed on the foundation 5 through anchor bolts, and the rotating mechanism 2 is vertically supported on the upper side of the base 1. The rotating mechanism 2 includes a first servo motor 21, a rotating plate 22, a connecting plate 23 and a boring bar 24. The first servo The motor 21 is vertically fixed on the left side of the base 1. The rotating disc 22, the connecting disc 23 and the boring bar 24 are arranged vertically on the upper side of the base 1 from bottom to top. The rotating disc 22 is supported on the upper side of the base 1 through bearings. , the internal gear of the rotating disk 22 meshes with the first gear shaft 25 on the output shaft of the first servo motor 21, and the bottom and top of the connecting disk 23 are respectively connected to the top of the rotating disk 22 and the bottom of the boring bar 24 through fasteners, and the boring bar 24 is The rod 24 is tapered, and the top of the boring bar 24 is provided with a lifting ring 26 .

As shown in Figures 1 and 2, the feed mechanism 3 includes a feed drive unit 31 and a feed cutting unit 32. The feed drive unit 31 includes a second servo motor 311, a second gear shaft 312, a third gear shaft 313, The ball cage universal joint 314 and the overload clutch 315, the second servo motor 311 is vertically fixed in the middle part of the base 1, the lower end of the second gear shaft 312 is fixedly connected to the output shaft of the second servo motor 311 through the coupling 316, and the second gear The middle part of the shaft 312 is supported on the middle part of the bottom of the connecting plate 23 through bearings. The second gear shaft 312 and the third gear shaft 313 mesh with each other. The third gear shaft 313 is supported on the left side of the bottom of the connecting plate 23 through bearings. The third gear shaft 313 The upper end is fixedly connected to the lower end of the overload clutch 315 through the ball cage universal joint 314, and the overload clutch 315 is a ball-type overload clutch.

The feed cutting unit 32 is arranged in the mounting groove 241 on the left side of the boring bar 24. The feed cutting unit 32 includes a ball screw 321, a nut seat 322, a tool seat 323, a cutting knife 324 and a double-row linear rolling guide 325. The ball screw The upper and lower ends of the rod 321 are respectively supported on the support seats 326 at the upper and lower ends of the mounting groove 241 of the boring bar 24 through bearings. The angle between the center line of the ball screw 321 and the center line of the boring bar 24 is 0.5° to 2°. In this embodiment, the ball screw The angle between the center line of the bar 321 and the center line of the boring bar 24 is 1°. The lower end of the ball screw 321 is fixedly connected to the upper end of the overload clutch 315. The nut seat 322 is screwed on the ball screw 321, and the tool seat 323 is fixed on the ball screw 321 through fasteners. On the nut seat 322, the cutting tool 324 is vertically fixed on the tool seat 323 through the tool sleeve 327 and the round nut 328. Both sides of the tool seat 323 are fixedly supported on the slide blocks of the double-row linear rolling guide 325 through fasteners. The double-row The linear rolling guide rails 325 are fixed parallel to the step surfaces on both sides of the mounting groove 241 of the boring bar 24 through fasteners. The mounting datum plane of the support seat 326 is parallel to the mounting datum plane of the double-row linear rolling guide rail 325 to ensure that the ball wire The parallelism between the bar 321 and the double-row linear rolling guide 325. Guards 329 are respectively provided on the upper and lower sides of the tool holder 323. The two ends of the guard 329 are respectively fixed to one side of the tool holder 323 and one end of the boring bar 324. The guard 329 is a spring steel rolling shutter type guard.

As shown in Figure 2, the digital measuring mechanism 4 is arranged on the left side of the mounting slot 241 of the boring bar 24. The digital measuring mechanism 4 includes a magnetic scale 41, a reading head 42 and a display 43. The magnetic scale 41 is fixed on the boring bar. On the left side of the installation slot 241, the reading head 42 is fixed on the left side of the tool holder 323, and the display 43 is connected to the reading head 42.

The present invention uses the installation surface of the double-row linear rolling guide rail 325 and the installation surface of the support base 326 as the installation basis, ensuring that the device has a unified installation reference. The processing of the propeller taper hole is realized through the linear motion of the tool seat 323 and the rotational motion of the boring bar 24.

By selecting the P-level precision double-row linear rolling guide 325 and the ball cage universal joint 314 as well as a unified installation reference surface, the straightness of the tool holder 323 moving on the double-row linear rolling guide 325 is ensured, and the straightness can reach ±0.01 mm/m.

As shown in Figure 3, when processing the propeller taper hole, first place the base 1 equipped with the first servo motor 21, the second servo motor 311 and the rotating disk 22 into the foundation 5 on the lower side of the working platform 6, and pass the ground Fix the base 1 with the foot bolts, and support the propeller 7 on the contour pad 8 on the upper side of the working platform 6. Then lift the boring bar assembly into the tapered hole of the propeller 7 through the lifting ring 26, and connect the bottom of the connecting plate 23 with the The top of the rotating plate 22 is connected, and the second gear shaft 312 is connected to the coupling 316 on the second servo motor 311. The top of the boring bar 24 is fixed on the top of the propeller 7 through the sliding bearing 9 and the support frame 10. At this time, the cutting tool 324 When it comes into contact with the inner wall of the tapered hole of propeller 7, it can be processed.

During processing, the first servo motor 21 is started. The first servo motor 21 drives the boring bar 24 to rotate through the first gear shaft 25, the rotating disk 22 and the connecting disk 23. The boring bar 24 drives the feed cutting unit 32 to rotate, and the cutting knife 324 follows. Turn. At the same time, the second servo motor 311 is started. The second servo motor 311 drives the ball screw 321 to rotate through the second gear shaft 312, the third gear shaft 313 and the overload clutch 315. At this time, the nut seat 322 is in a straight line on the ball screw 321. Moving, the nut seat 322 drives the tool seat 323 to move and feed along the double-row linear rolling guide 325, so that the cutting tool 324 feeds linearly while rotating, thereby completing the processing of the propeller taper hole. After the propeller taper hole processing is completed, the first servo motor 21 is turned off, the boring bar 24 stops rotating, and the cutting knife 324 stops rotating accordingly. The cutting knife 324 is driven by the tool seat 323 and moves up and down to process the oil groove on the propeller taper hole. The oil groove processing After completion, the length and size of the oil tank can be measured through the display 43 .

In addition to the above-mentioned embodiments, the present invention can also have other implementations. Any technical solutions formed by equivalent substitutions or equivalent transformations fall within the protection scope required by the present invention.

Claims (1)

1. A propeller taper hole processing device comprises a base, a rotating mechanism and a feeding mechanism; the base is fixed on a foundation, the rotating mechanism is vertically supported on the upper side of the base, the rotating mechanism comprises a first servo motor, a rotating disc, a connecting disc and a boring bar, the first servo motor is vertically fixed on one side in the base, the rotating disc, the connecting disc and the boring bar are sequentially and vertically arranged on the upper side of the base from bottom to top, the rotating disc is supported on the upper side of the base through a bearing, an inner gear of the rotating disc is meshed with a first gear shaft on an output shaft of the first servo motor, and the bottom and the top of the connecting disc are fixedly connected with the top of the rotating disc and the bottom of the boring bar respectively; the feeding mechanism comprises a feeding driving unit and a feeding cutting unit, the feeding driving unit comprises a second servo motor, a second gear shaft, a third gear shaft, a ball cage universal joint and an overload clutch, the second servo motor is vertically fixed in the middle of the base, the lower end of the second gear shaft is fixedly connected with the output shaft of the second servo motor through a coupler, the middle of the second gear shaft is supported on the middle of the bottom of the connecting disc, the second gear shaft is meshed with the third gear shaft, the third gear shaft is supported on one side of the bottom of the connecting disc, and the upper end of the third gear shaft is fixedly connected with the lower end of the overload clutch through the ball cage universal joint; the feeding cutting unit is arranged in the mounting groove at one side of the boring bar and comprises a ball screw, a nut seat, a cutter seat and a cutter, wherein the upper end and the lower end of the ball screw are respectively supported on the supporting seats at the upper end and the lower end of the boring bar mounting groove, the lower end of the ball screw is fixedly connected with the upper end of the overload clutch, the nut seat is screwed on the ball screw, the cutter seat is fixed on the nut seat, and the cutter is vertically fixed on the cutter seat; the method is characterized in that: the digital display measuring mechanism is arranged on one side of the boring bar mounting groove and comprises a magnetic grating ruler, a reading head and a display, wherein the magnetic grating ruler is fixed on one side of the boring bar mounting groove, the reading head is fixed on one side of the tool apron, and the display is connected to the reading head; the feeding cutting unit further comprises double-row linear rolling guide rails, two sides of the cutter holder are respectively and fixedly supported on sliding blocks of the double-row linear rolling guide rails, and the double-row linear rolling guide rails are respectively and parallelly fixed on step surfaces at two sides of the boring bar mounting groove; the upper side and the lower side of the tool apron are respectively provided with a shield, and two ends of the shield are respectively fixedly connected with one side of the tool apron and one end of the boring bar; the shield is a spring steel rolling shutter type shield.