CN202239647U

CN202239647U - Lathe work frock

Info

Publication number: CN202239647U
Application number: CN2011203612001U
Authority: CN
Inventors: 王峰
Original assignee: Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2011-09-23
Filing date: 2011-09-23
Publication date: 2012-05-30
Anticipated expiration: 2021-09-23

Abstract

The utility model discloses a turning tool, which comprises a cutter shaft and at least two brackets; the bracket consists of a support and a gland arranged on the support; the lower end surface of the gland is provided with an upper clamping surface, the upper end surface of the support is provided with a lower clamping surface, and the upper clamping surface and the lower clamping surface are matched to clamp a processed workpiece; the bottom surface of the support is provided with a mounting hole for connecting a lathe carriage; the cutter shaft is provided with at least one radial hole for mounting a cutter bar or a cutter. The utility model is used for finish machining through deep holes, the support is fixed on the lathe carriage, and a workpiece to be machined is clamped between the upper clamping surface and the lower clamping surface; the cutter shaft penetrates through two ends of the through hole of the workpiece to be processed and is fixed on the lathe, the cutter bar is installed in the radial hole, the cutter shaft rotates along with the main shaft of the lathe, the planker is moved to enable the workpiece to be processed to move to finish the inner wall of the through hole, the problem of vibration generated during processing is avoided, the form and position tolerance, the surface roughness and the size precision of the workpiece are guaranteed, and meanwhile the production efficiency is improved.

Description

The turning processing tool

Technical field

The utility model relates to a kind of anchor clamps of machining, relates in particular to a kind of turning processing tool that fine finishining connects deep hole that is used for.

Background technology

As shown in Figure 1, when the perforation deep hole of turning finishing workpiece, elder generation carries out roughing to the through hole of workpiece usually, then roughing part 7 one ends is clamped through the chuck on the Lathe Spindle Box 12, and the centre position is supported with centre frame 3; The knife bar that cutter is housed 4 clampings on cutter platform 5; Through moving radially the depth of cut of cutter platform 5 adjustment cutters; Chuck 2 rotates with the main shaft 8 that is arranged on the main spindle box 1, and cutter platform 5 moves axially the processing of completion to through-hole wall from right to left with planker 9, because through hole is longer; Therefore the length that needs knife bar 4 also long enough could be accomplished the fine finishining to through-hole wall; Because 4 oversize adding of knife bar, be easy to generate vibrations man-hour, is difficult to guarantee the form and position tolerance and the surface roughness of workpiece, and dimensional accuracy.

The utility model content

The utility model provides a kind of turning processing tool, in order to solve defective of the prior art, guarantees the form and position tolerance and the surface smoothness of workpiece, and dimensional accuracy, has improved production efficiency simultaneously.

The utility model embodiment provides a kind of turning processing tool, comprises cutter shaft and at least two supports; Said support is made up of bearing and the gland that is installed on the said bearing; The lower surface of said gland is provided with catch surface, and the upper surface of said bearing is provided with down catch surface, and said upward catch surface cooperates with following catch surface can realize holding work piece; Said bearing bottom surface is provided with the installing hole that is used to connect lathe carriage; Said cutter shaft is provided with at least one radial hole that is used to install knife bar or cutter.

Wherein, said cutter shaft one end is and dwindles the chuck that is used to be trapped in lathe; The end face center of the said cutter shaft other end be provided with can with the top depression that cooperates of said tail stock.

Further, said catch surface and the equal semicircular in shape of following catch surface, rectangle, the triangle or trapezoidal gone up.

Wherein, said bearing is connected through bolt with gland.

Further, said radial hole is a square opening.

Particularly, said radial hole is more than two, and along the axially spaced-apart setting of cutter shaft, and the angle between the center line of adjacent two said radial holes is identical.

The turning processing tool that the utility model provides is fixed on bearing on the lathe carriage through installing hole, work piece is placed on the following catch surface of bearing, gland is being installed on the bearing and catch surface is cooperated so that work piece is clamped with following catch surface; Cutter shaft is passed in the through hole that roughing is accomplished from work piece; And cutter shaft one end is clipped in the chuck of lathe, the other end compresses through the top of tail stock, direct mounting cutter (diameter that is applicable to accurately machined endoporus is less) in the radial hole of cutter shaft; Or knife bar (diameter that is applicable to accurately machined endoporus is bigger) is installed in the radial hole of cutter shaft; Mounting cutter on knife bar again, cutter shaft rotates with lathe spindle, drives cutter simultaneously and rotates; Make work piece move the fine finishining of accomplishing through-hole wall with planker through moving carriage; Adopt the processing tool of the utility model, the length of knife bar only needs suitable with the diameter of work piece, knife bar length (suitable with the axial length of roughing part) in the prior art; Being different from the prior art knife bar one end fixes; The other end suspends; The length of cantilever knife bar is longer, in the feeding process, the workpiece of rotation is added the man-hour cutter and sinks, even if cutter is prone to produce the vibrations fracture during insufficient rigidity of knife bar; Cutter shaft rotation drive is located in the cutter shaft radial hole in the utility model knife bar or cutter rotation are processed workpiece; Therefore avoided adding the problem that produce vibrations man-hour, guaranteed form and position tolerance, surface roughness and the dimensional accuracy of workpiece simultaneously, improved production efficiency simultaneously.

Description of drawings

Fig. 1 is the prior art reference view.

Fig. 2 is the utility model user mode reference view.

Fig. 3 is the broken section structural representation of bearing in the utility model.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the broken section structural representation of gland in the utility model.

Fig. 6 is the left view of Fig. 5.

Fig. 7 is the front view of cutter shaft in the utility model.

Fig. 8 is the sectional structure sketch map of work piece in the utility model.

Reference numeral:

The 1-main spindle box; The 2-chuck; The 3-centre frame;

The 4-knife bar; 5-cutter platform; The 6-tailstock;

7-roughing part; The 8-main shaft; The 9-planker;

10-is top; The 11-work piece; The 12-through hole;

The 13-cutter shaft; The 14-support; The 15-bearing;

The 16-gland; The last catch surface of 171-; Catch surface under the 172-;

The 18-installing hole; The 19-radial hole; The 20-stopper slot;

The 21-step.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model clearer; To combine the accompanying drawing among the utility model embodiment below; Technical scheme among the utility model embodiment is carried out clear, intactly description; Obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

Shown in Fig. 2-8, the utility model embodiment provides a kind of turning processing tool, comprises being used to be located in cutter shaft 13 and at least two supports 14 in work piece 11 through holes 12; Support 14 is made up of bearing 15 and the gland 16 that is installed on the bearing 15; The upper surface of gland 16 is provided with catch surface 171; The upper surface of bearing 15 is provided with down catch surface 172, and last catch surface 171 cooperates the outer wall that is used to hold work piece 11 with following catch surface 172, sees Fig. 3, Fig. 5; Bearing 15 and gland 16 are connected through bolt; Bearing 15 bottom surfaces are provided with and are used for it is installed in the installing hole 18 on the planker 9 of lathe; Installing hole 18 is corresponding with the screwed hole position on being located at planker 9; In installing hole 18, establishing screw cooperates with screwed hole on the planker 9 and makes bearing 15 be fixed on the planker 9; Last catch surface 171 and following catch surface 172 hold frictional force according to the shape setting of work piece 11 with increase; Specifically can be semicircle, rectangle, triangle or trapezoidal, because work piece is cylindrical, Fig. 3, upward catch surface 171 shown in Figure 5 and following catch surface 172 are semicircle in the present embodiment; Cutter shaft 13 is provided with at least one radial hole that is square 19 that is used for installing knife bar or mounting cutter (present embodiment is installed knife bar); Cutter shaft 13 1 ends are and dwindle the chuck 2 that is used to be trapped in lathe, form a step 21, see Fig. 7, and this step 21 is used to limit cutter shaft 13 and is axially moving relative to chuck 2; The end face center of cutter shaft 13 other ends is provided with and is used for the depression that cooperates with top 10 of tail stock 6.

The turning processing tool that the utility model provides; During use; At first bearing 15 is fixed on the lathe carriage 9 through screw, then work piece 11 is placed on the following catch surface 172 of bearing 15 upper surfaces, and the last catch surface 171 corresponding catch surface 172 down of gland 16 lower surfaces are placed on the bearing 15; In order to prevent that work piece 11 relative bearings 15 and gland 16 from moving axially; Can on work piece 11, process two stopper slots 20, see Fig. 8, the axial length on the length of stopper slot 20 and bearing 15 and the gland 16 is suitable; Catch surface 171 and following catch surface 172 are placed respectively in this stopper slot, work piece 11, gland 16 and bearing 15 are fixed together with planker 9 through bolt; Accomplishing work piece 11 through holes 12 through top 10 of chuck 2 and tailstock 6 locatees with the center line of lathe spindle 8; Cutter shaft 13 is passed in the through hole 12 that roughing forms from work piece 11, and the one of which end is clipped in the chuck 2 of lathe, the other end compresses through top 10 of tail stock 6; Knife bar is installed in the radial hole 19 of cutter shaft 13; For the ease of clamping, the cross section of knife bar is generally square, and cutter shaft 13 rotates with lathe spindle 8; The cutter that drives knife bar simultaneously and be located on the knife bar rotates; Make work piece 11 move the fine finishining of accomplishing through hole 12 inwalls with planker 9 through moving carriage 9, the length of the knife bar only diameter with work piece 11 is suitable, knife bar length (suitable with the axial length of work piece 11) in the prior art; Therefore avoided adding the problem that produce vibrations man-hour, guaranteed form and position tolerance, surface roughness and the dimensional accuracy of workpiece simultaneously, improved production efficiency simultaneously.

When the machining accuracy of inner hole wall is higher, just need processing repeatedly can reach the surface roughness requirement several times usually, in order to save time; Can on cutter shaft 13, establish two radial holes 19; Install knife bar in the radial hole 19 respectively, install cutter on the knife bar, the depth of cut of two cutters of adjustment increases progressively with planker 9 direct of travels successively; Like this, planker 9 moves a stroke and can accomplish twice turning manufacturing procedure; Equally also can on cutter shaft 13, install three above cutter, structure is the same, and at the radial hole of establishing on the cutter shaft 13 more than three 19, through knife bar and cutter are installed respectively in radial hole 19, the depth of cut of adjustment cutter increases progressively with planker 9 direct of travels successively.

When radial hole 19 is two when above, in order to reduce the influence of 19 pairs of cutter shaft 13 intensity of radial hole, radial hole 19 is along the axially spaced-apart setting of cutter shaft 13, and makes the angle between the center line of adjacent two radial holes 19 identical.Like radial hole 19 is two, and the angle between two radial holes, 19 center lines is 90 degree; Radial hole 19 is three, and the angle in then adjacent two radial holes 19 between the mind-set is 60 degree, and the like.

What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims

1. a turning processing tool is characterized in that, comprises cutter shaft and at least two supports; Said support is made up of bearing and the gland that is installed on the said bearing; The lower surface of said gland is provided with catch surface, and the upper surface of said bearing is provided with down catch surface, and said upward catch surface cooperates with following catch surface can realize holding work piece; Said bearing bottom surface is provided with the installing hole that is used to connect lathe carriage; Said cutter shaft is provided with at least one radial hole that is used to install knife bar or cutter.

2. turning processing tool according to claim 1 is characterized in that, said cutter shaft one end is and dwindles the chuck that is used to be trapped in lathe; The end face center of the said cutter shaft other end be provided with can with the top depression that cooperates of said tail stock.

3. turning processing tool according to claim 1 is characterized in that, said catch surface and the equal semicircular in shape of following catch surface, rectangle, the triangle or trapezoidal gone up.

4. turning processing tool according to claim 1 is characterized in that said bearing is connected through bolt with gland.

5. turning processing tool according to claim 1 is characterized in that, said radial hole is a square opening.

6. according to claim 1 or 5 described turning processing tools, it is characterized in that said radial hole is more than two, along the axially spaced-apart setting of cutter shaft, and the angle between the center line of adjacent two said radial holes is identical.