CN204075396U - A kind of for anti-frock of scraping counterbore - Google Patents

Abstract

The purpose of this utility model is to provide one and can overcomes and cannot realize cutting in being cut surface from front vertical in small space, then from surface to be machined reverse side carry out cutting for anti-frock of scraping counterbore, to ensure counterbore crudy, to enhance productivity; Comprise knife bar, extension bar and holding screw; Be connected on knife bar with one end of the extension bar of knife bar coaxial line, the other end of extension bar, with set screw hole, installs holding screw in set screw hole; Near one end of holding screw on extension bar, there is the dress tool bore perpendicular to extension bar axis; Set screw hole on extension bar communicates with dress tool bore.

Description

A kind of for anti-frock of scraping counterbore

Technical field

The utility model relates to machining frock field, is a kind of work for processing counterbore, and especially a kind of front processing technology that is applicable to is poor and process the frock of counterbore from the negative.

Background technology

In machining production practices, when adopting bolt, packing ring, nut to connect, often need to process counterbore, and it is more multi-link, technical requirement for counterbore is higher, quality as the counterbore crudy on the shaft coupling waveform joint of one of key components and parts in steam turbine product directly affects the performance of rotor when doing dynamic balance running, is one of critical process.The counterbore of shaft coupling waveform joint processing and adjacent between outer distance of round very narrow and there is certain interference, cannot realize saving surperficial feeding from front vertical in shaft coupling waveform to cut, and often tool changing, aim at tool operation all will be carried out in a processing hole, not only bring certain difficulty to processing, the error simultaneously produced due to each tool setting and the operation of repetition, can not ensure shaft coupling waveform joint counterbore crudy, reduce production efficiency.

Summary of the invention

The purpose of this utility model is to provide one and can overcomes and cannot realize cutting in being cut surface from front vertical in small space, then carry out the frock of the processing counterbore cut from surface to be machined reverse side, to ensure counterbore crudy, to enhance productivity.

The purpose of this utility model is achieved through the following technical solutions:

Thisly comprise knife bar, extension bar and holding screw for anti-frock of scraping counterbore, be connected on knife bar with one end of the extension bar of knife bar coaxial line, the other end of extension bar, with set screw hole, installs holding screw in set screw hole; Near one end of holding screw on extension bar, there is the dress tool bore perpendicular to extension bar axis; Set screw hole on extension bar communicates with dress tool bore.

The beneficial effects of the utility model are:

This frock is not that entirety is placed on the front needing the hole processing counterbore, but employing is passed knife bar processed hole, the mode that extension bar is connected with knife bar is processed counterbore again, that is be adopt detachable frock, cut from the feeding of surface to be machined reverse side, instead scrape counterbore.

Anti-counterbore process of scraping is actually to cut and scrapes two kinds of results act on squeezing, and squeeze and scrape the depth of parallelism that better can ensure counterbore base end face and datum level, precision is high, is conducive to guarantee counterbore crudy.

A tool setting, can process multiple counterbore, simple to operate, enhances productivity.

Require according to the manufacturability of design, the requirement of human engineering, the locking requirement with rigidity, improve as follows for anti-frock of scraping counterbore above-mentioned:

Extension bar is movably connected on knife bar by screw thread pair; Extension bar is also provided with near the one end being provided with holding screw the positive multiaspect post in even number face.Instrument easy to use fills, disconnects bar.

The dress center line of tool bore and the axis co-planar of extension bar.Be convenient to tool setting, ensure that processing dimension is consistent.

Holding screw is soket head cap screw; The holding screw screw thread pair be movably arranged on extension bar is fine thread.The extension bar screw thread pair be movably connected on knife bar is fine thread, and screw thread precession direction is contrary with main axis direction.This improvement, makes this anti-frock of scraping counterbore be more applicable for small space operation; Use fine thread, eliminate thread pitch as far as possible, simultaneously extension bar screw thread precession direction and both end faces contrary with main axis direction fit tightly, in operation process, screw thread is avoided to loosen phenomenon along with main axis produces, anti-loosing effect is better, is also beneficial to anti-rigidity, the raising machining accuracy of scraping the frock of counterbore of guarantee.

Accompanying drawing explanation

Fig. 1 is this anti-structure chart scraping the frock of counterbore.

Fig. 2 is the C direction view of Fig. 1.

Fig. 3 is the B direction view of Fig. 2.

Fig. 4 is the D direction view of Fig. 2.

Fig. 5 is the structure chart of knife bar.

Fig. 6 is the A-A profile of Fig. 5.

Fig. 7 is the structure chart of extension bar.

Fig. 8 is the right view of Fig. 7.

Fig. 9 is the front view of holding screw.

Figure 10 is the top view of Fig. 9.

Figure 11 uses this anti-anti-schematic diagram scraping counterbore of frock scraping counterbore.

Figure 12 is the top view of Figure 11.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail:

This for anti-frock of scraping counterbore see shown in Fig. 1-4, comprises knife bar, extension bar 2 and holding screw 3.

Again see shown in Fig. 5, Fig. 6, the general structure of knife bar is axial workpiece, is made up of: left end taper shank 1, for being connected with machine tool chief axis three parts; Right-hand member is handle of a knife 4, for arranging extension bar 2, at the right-hand member of handle of a knife 4, is provided with the stepped hole be made up of counterbore and screwed hole, and the right side 9 of handle of a knife 4 is polished surface; Between taper shank 1 and handle of a knife 4, shoulder being set, shoulder offering for coordinating with machine tool chief axis straight end-face key and the handle of a knife keyway 8 of transmitting torque.

Again see shown in Fig. 7, Fig. 8, the general structure of extension bar 2 is axial workpiece; The left end of extension bar 2 is provided with external screw thread and matches with the internal thread on knife bar, and externally threaded length is not more than the degree of depth of internal thread on knife bar; The right-hand member of extension bar 2 offers set screw hole; Extension bar 2 also offers the dress tool bore 6 perpendicular to extension bar axis near the one end offering set screw hole, for adapting with cutter, dress tool bore 6 is preferably square hole, and its size Selection is preferably: dress tool bore 6 coordinates with the width small―gap suture of cutter at extension bar 2 width in the radial direction, width on extension bar 2 axial direction is slightly larger than the thickness of cutter; Set screw hole communicates with dress tool bore 6; The left side 10 of extension bar 2 is polished surface, and left side to the length of external screw thread left end is not more than handle of a knife 4 and tops bar the degree of depth in hole.

Again see shown in Fig. 1,9,10, holding screw 3 matches with the set screw hole on extension bar 2.

The connected mode of above-mentioned each part is:

One end of extension bar 2 is movably connected on knife bar by screw thread pair 5, and the other end of extension bar is movably set with holding screw 3 by screw thread pair 7.

Require according to the manufacturability of design, the requirement of human engineering, the locking requirement with rigidity, improve as follows for anti-frock of scraping counterbore above-mentioned:

Extension bar 2 is also provided with near the one end being provided with holding screw 3 the positive multiaspect post in even number face, when specifically implementing, adopts positive six posts.

The dress center line of tool bore 6 and the axis co-planar of extension bar 2.

Holding screw 3 is soket head cap screw; Holding screw 3 screw thread pair 7 be movably arranged on extension bar 2 also can be fine thread.The screw thread pair 5 that extension bar 2 is movably connected on knife bar is fine thread, and screw thread precession direction is contrary with main axis direction.

During use, shown in Fig. 1-4 and Figure 11,12, knife bar taper shank 1 is contained in the spindle hole of lathe (generally using boring and milling machine), and knife bar keyway 8 coordinates with main shaft straight end-face key and transmitting torque; Workpiece 12 is located (diagram selects vee-block 14 to locate); Handle of a knife 4 part of knife bar extend in the manufactured through hole 13 of workpiece 12 also partly stretches out; Extension bar 2 is contained on handle of a knife 4, both are connected by fine thread and end face is adjacent to, anti-cutter 11 of scraping is encased in extension bar 2 square hole 6, screw in holding screw 3, to good cutter (by cutter positioning), tighten holding screw 3 with inner hexagon spanner, make holding screw 3 end face 10 compress cutter 11(and cutter is clamped); Axis feeding, starts instead to scrape counterbore.

The beneficial effects of the utility model are:

Adopt detachable frock, cut from the feeding of surface to be machined reverse side, instead scrape counterbore, better can ensure the depth of parallelism of counterbore base end face and datum level, precision is high, is conducive to guarantee counterbore crudy.

A tool setting, can process multiple counterbore, simple to operate, enhances productivity.

Adopt that screw thread pair is flexibly connected and is provided with on extension bar the positive multiaspect post in even number face, soket head cap screw selected by holding screw, be beneficial to and be applicable to small space operation, instrument easy to use dress, disconnect bar.

Adopt fine thread pair to connect, reduce the gap between screw thread, prevent the axial float of knife bar; Screw thread precession direction is contrary with main axis direction, avoids screw thread to loosen phenomenon along with main axis produces; The faying face smart benchmark each other of extension bar and knife bar, improves the rigidity of frock and the reliability of use.

Claims (6)

1. for an anti-frock of scraping counterbore, comprise knife bar, extension bar and holding screw, it is characterized in that, be connected on knife bar with one end of the extension bar of knife bar coaxial line, the other end of extension bar, with set screw hole, installs holding screw in set screw hole; Near one end of holding screw on extension bar, there is the dress tool bore perpendicular to extension bar axis; Set screw hole on extension bar communicates with dress tool bore.

2. according to claim 1 for anti-frock of scraping counterbore, it is characterized in that, extension bar is movably connected on knife bar by screw thread pair.

3. according to claim 1ly to it is characterized in that for anti-frock of scraping counterbore, extension bar is also provided with near the one end being provided with holding screw the positive multiaspect post in even number face.

4. according to claim 1ly to it is characterized in that for anti-frock of scraping counterbore, the dress center line of tool bore and the axis co-planar of extension bar.

5. according to claim 1ly it is characterized in that for anti-frock of scraping counterbore, holding screw is soket head cap screw; The holding screw screw thread pair be movably arranged on extension bar is fine thread.

6. according to claim 2ly it is characterized in that for anti-frock of scraping counterbore, the extension bar screw thread pair be movably connected on knife bar is fine thread, and screw thread precession direction is contrary with main axis direction.