CN212239218U

CN212239218U - Finish machining tool for excircle of shaft

Info

Publication number: CN212239218U
Application number: CN202020599155.2U
Authority: CN
Inventors: 房振; 张波; 刘健; 汤杨; 张芷菡
Original assignee: Liaoning Fu An Machinery Manufacturing Co ltd
Current assignee: Liaoning Fu An Machinery Manufacturing Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-12-29
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a shaft excircle finish machining cutter especially relates to a hydraulic turbine valve shaft excircle finish machining cutter. The device comprises a sleeve, a pressing block, a machine-clamped turning tool, a baffle, a first jackscrew and a second jackscrew; the main body part of the sleeve is cylindrical, one end of the main body part of the sleeve is provided with a tail mandrel matched with a taper hole of a boring machine spindle, and the other end of the main body part of the sleeve is provided with a groove matched with a mechanically clamped turning tool; the lathe tool of the rack is placed in the groove, the pressing block is fixed on the front end face of the groove, the first jackscrew is installed on the pressing block, and the feeding of the lathe tool clamped by the machine is adjusted through the first jackscrew; the baffle is fixed at the side end face of recess, and the second jackscrew is installed on the baffle, fixes a position machine clamp lathe tool through the second jackscrew. The utility model has the advantages of simple structure, convenient and fast assembly and disassembly, convenient operation, convenient, fast and accurate adjustment of the elongation of the cutter, stable fixation and low manufacturing cost; can carry out the finish machining to hydraulic turbine valve shaft excircle, guarantee the processingquality of hydraulic turbine valve shaft excircle.

Description

Finish machining tool for excircle of shaft

Technical Field

The utility model relates to a shaft excircle finish machining cutter especially relates to a hydraulic turbine valve shaft excircle finish machining cutter.

Background

The water turbine and the auxiliary machine are important hydroelectric equipment, are indispensable components in the hydroelectric power industry, and are important equipment for fully utilizing clean renewable energy sources to realize energy conservation, emission reduction and environmental pollution reduction. The water turbine valve is located the water inlet department of hydraulic turbine group, and the upper reaches are connected with the penstock, and the low reaches are connected with the water turbine spiral case that intakes, receive the impact of high-pressure rivers, and it is very strict to make the quality requirement. The water turbine valve is a key component of a water turbine ball valve mechanism, and the processing quality of the water turbine valve is directly related to the safe and reliable operation of a water turbine set.

The weight of the valve of the water turbine is more than 50 tons, the requirement on the machining precision is high, the outer cylindrical surface of the box body is machined on a horizontal boring machine at present, and the following defects exist when a numerical control machine tool is adopted to mill the outer cylindrical surface: the machining cycle is long, the service life of the tool is short, the requirement on the angle of the tool is high, the elastic deformation of the boring bar is changed along with the increase of the elongation of the boring bar, the cylindricity of the machined outer cylindrical surface is out of tolerance, and the machined cylindrical surface is provided with a step. When the crank arm cutter bar is adopted, the rigidity is poor, the vibration is large, the precision is low, the machining size is not well controlled, and better surface roughness cannot be obtained after machining.

Disclosure of Invention

In order to overcome the not enough of above-mentioned prior art, the utility model provides an axle excircle finish machining cutter, the finish machining of the hydraulic turbine valve shaft excircle of being convenient for will promote the process velocity by a wide margin under the prerequisite of guaranteeing the quality, and the quality assurance volume is practiced thrift manufacturing cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a finish machining tool for an excircle of an axis comprises a sleeve, a pressing block, a machine-clamped turning tool, a baffle, a first jackscrew and a second jackscrew; the main body part of the sleeve is cylindrical, one end of the main body part of the sleeve is provided with a tail mandrel matched with a taper hole of a boring machine spindle, and the other end of the main body part of the sleeve is provided with a groove matched with a mechanically clamped turning tool; the lathe tool of the rack is placed in the groove, the pressing block is fixed on the front end face of the groove, the first jackscrew is installed on the pressing block, and the feeding of the lathe tool clamped by the machine is adjusted through the first jackscrew; the baffle is fixed at the side end face of recess, and the second jackscrew is installed on the baffle, fixes a position machine clamp lathe tool through the second jackscrew.

The sleeve main body part is cylindrical, and long-strip-shaped lightening grooves are uniformly distributed in the wall of the sleeve.

The tail mandrel is conical.

The pressing block is fixed on the front end face of the groove through a bolt.

The baffle is fixed on the side end face of the groove through bolts.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model comprises a sleeve, a pressing block, a machine clamping lathe tool, a baffle, a first jackscrew and a second jackscrew; the frame lathe tool is placed in the sleeve recess, feeds through first jackscrew adjustment, fixes a position with the second jackscrew after adjusting well. The utility model has simple structure, convenient operation and lower manufacturing cost; can carry out the finish machining to hydraulic turbine valve shaft excircle, and fixed firm, the adjustment is convenient, has guaranteed the processingquality of hydraulic turbine valve shaft excircle.

2) The pressing block and the baffle are fixed on the front end surface of the groove through bolts; the installation is dismantled convenient and fast.

3) When the extension amount of the mechanically clamped turning tool needs to be adjusted: and after the first jackscrew and the bolt are loosened, adjusting the second jackscrew. If the screw pitch of the second jackscrew is 2mm, namely, the length of the mechanically-clamped turning tool is extended by 2mm when the jackscrew 2 rotates for one circle during adjustment, and the diameter of the processed outer cylindrical surface is reduced by 4 mm. The cutter elongation is adjusted conveniently, quickly and accurately.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a schematic plan view of the present invention.

In the figure: 1-sleeve 2-briquetting 3-machine clamp turning tool 4-baffle 5-first jackscrew 6-second jackscrew 7-strip weight-reducing groove 8-tail mandrel 9-groove 10 bolt

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1-5, a finish machining tool for an excircle of an axis comprises a sleeve 1, a pressing block 2, a mechanically clamped turning tool 3, a baffle 4, a first jackscrew 5 and a second jackscrew 6.

The main body part of the sleeve 1 is cylindrical, and the long-strip-shaped lightening grooves 7 are uniformly distributed on the wall of the sleeve, so that the weight of the cutter is favorably lightened. One end of the sleeve 1 is provided with a tail mandrel 8 matched with a taper hole of a boring machine spindle, the tail mandrel 8 is conical, and the other end of the sleeve 1 is provided with a groove 9 matched with a mechanically-clamped turning tool.

3 cutter arbor parts of frame lathe tool are placed in recess 9, and briquetting 2 passes through bolt 10 to be fixed at the preceding terminal surface of

recess

9, and 3 cutter arbor of frame lathe tool are pushed down to briquetting 2, and first jackscrew 5 is installed on briquetting 2, and first jackscrew 5 supports the side of 3 cutter arbor of frame lathe tool, presss from both sides feeding of lathe tool 3 through 5 adjustment machines of first jackscrew. Baffle 4 passes through bolt 10 to be fixed at the side end face of recess 9, and second jackscrew 6 is installed on baffle 4, and second jackscrew 6 supports the terminal surface that frame lathe tool 3 cutter arbor, fixes a position machine clamp lathe tool 3 through second jackscrew 6.

The utility model discloses a working process does:

1) firstly, the barrel body of the sleeve 1 is hung flat, and the tail mandrel 8 is matched with a taper hole of a spindle of a horizontal boring machine and is installed and clamped.

2) The center of the main shaft is aligned to the center of the outer cylindrical surface of the valve to be processed, the mechanically clamped turning tool 3 is placed in the groove 9 of the sleeve 1, the extending length of the mechanically clamped turning tool 3 is manually adjusted to a proper position, and the bolt 10 is installed and screwed down. And installing and screwing the pressing block 2 and the first jackscrew 5. And installing the baffle 4 and the second jackscrew 6 and screwing.

3) When the extension amount of the mechanically clamped turning tool 3 needs to be adjusted: and (5) loosening the first jackscrew 5 and the bolt 10, and then adjusting the second jackscrew 6. The screw pitch of the second jackscrew 6 is 2mm, namely when adjusting, the length of the mechanically-clamped lathe tool 3 is extended by 2mm every time the second jackscrew 6 rotates a circle, and the diameter of the processed outer cylindrical surface is reduced by 4 mm.

The utility model has the advantages of simple structure, convenient and fast assembly and disassembly, convenient operation, convenient, fast and accurate adjustment of the elongation of the cutter, stable fixation and low manufacturing cost; can carry out the finish machining to hydraulic turbine valve shaft excircle, guarantee the processingquality of hydraulic turbine valve shaft excircle.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention. The methods used in the above examples are conventional methods unless otherwise specified.

Claims

1. The utility model provides an excircle finish machining cutter which characterized in that: the device comprises a sleeve, a pressing block, a machine-clamped turning tool, a baffle, a first jackscrew and a second jackscrew; the main body part of the sleeve is cylindrical, one end of the main body part of the sleeve is provided with a tail mandrel matched with a taper hole of a boring machine spindle, and the other end of the main body part of the sleeve is provided with a groove matched with a mechanically clamped turning tool; the lathe tool of the rack is placed in the groove, the pressing block is fixed on the front end face of the groove, the first jackscrew is installed on the pressing block, and the feeding of the lathe tool clamped by the machine is adjusted through the first jackscrew; the baffle is fixed at the side end face of recess, and the second jackscrew is installed on the baffle, fixes a position machine clamp lathe tool through the second jackscrew.

2. The tool according to claim 1, wherein: the sleeve main body part is cylindrical, and long-strip-shaped lightening grooves are uniformly distributed in the wall of the sleeve.

3. The tool according to claim 1, wherein: the tail mandrel is conical.

4. The tool according to claim 1, wherein: the pressing block is fixed on the front end face of the groove through a bolt.

5. The tool according to claim 1, wherein: the baffle is fixed on the side end face of the groove through bolts.