CN202621945U - Single servo power knife rest based on basic motion time (BMT) cutter head - Google Patents
Single servo power knife rest based on basic motion time (BMT) cutter head Download PDFInfo
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- CN202621945U CN202621945U CN 201220125151 CN201220125151U CN202621945U CN 202621945 U CN202621945 U CN 202621945U CN 201220125151 CN201220125151 CN 201220125151 CN 201220125151 U CN201220125151 U CN 201220125151U CN 202621945 U CN202621945 U CN 202621945U
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- gear
- knife rest
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- spur gear
- bmt
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Abstract
A single servo power knife rest based on a basic motion time (BMT) cutter head relates to the field of a knife rest for a numerical-control machine tool. The single servo power knife rest comprises a knife rest box body, a rear cover plate, a power input shaft, a clutch device, a first intermediate shaft, a second intermediate shaft, a third intermediate shaft, three fluted disc structures, a power knife drive device and a BMT cutter head, wherein a servo motor drives the BMT cutter head to rotate through a straight gear system which is installed on the intermediate shaft, and a power tool is driven through the transmission of the straight gear and bevel gears which are installed on the intermediate shafts, and the power switch is realized through the engagement and disengagement of the straight gear on the power input shaft and a hydraulic shifting mechanism. The single servo power knife rest has characteristics of good rigidness, strong reverse machining capacity and convenience in installation.
Description
Technical field
The invention belongs to Digit Control Machine Tool and uses the power knife rest field, relates to a kind of single servo power knife rest of BMT cutterhead specifically.
Background technology
Numerically-controlled slide is the important core functional part of numerically controlled lathe and numerical-control turn-milling Compositions of metal-working machines; Follow moral formula quick change tool rest (VDI Tool holder System) standard mostly in the tool holder designs exploitation at present; The numerically-controlled slide of band VDI cutterhead clamps the handle of a knife of band tooth awl through clamp; Be widely used in the cutter tower that tool rest axially or is radially installed, had the fast characteristics of tool-changing speed.But on the VDI cutterhead, the handle of a knife of tool rest is installed in the cutterhead installing hole, assigns general employing loose fit for ease, and the minim gap that both produce can cause harmful effect to machining accuracy; Handle of a knife utilizes the single screw on the latch segment to fix, because spatial constraints, latch segment can not be done very greatly, makes latch segment carry out brute force lock press fit to tool rest, causes fixed effect built on the sand; During cutting, the force side of cutter is longer to the stiff end of tool rest, is easy to generate vibration, has reduced rigidity simultaneously.The drawbacks limit of VDI cutterhead the processing characteristics of lathe complete machine.
Summary of the invention
The present invention provides a kind of single servo power knife rest, adopts the BMT cutterhead, realizes the driving and the powershift of cutterhead and power cutter, solves problems such as not enough, the reverse working ability of existing tool holder stiffness is poor, assembly process process is bad.
The purpose of the invention realizes through following technical proposals: based on single servo power knife rest of BMT cutterhead; It is characterized in that: comprise knife rest casing, back shroud, power input shaft, arrangement of clutch, first jackshaft, second jackshaft, the 3rd jackshaft, three fluted disc structures, power driving device for cutter and BMT cutterhead, wherein:
The power input shaft rear end is supported on the knife rest back shroud through axle sleeve and ball bearing; Front end is supported on the knife rest back shroud through needle bearing; And link to each other with servomotor through safety coupling, power input shaft links to each other with two spur gear a, spur gear b with internal spline through external splines;
Arrangement of clutch mainly comprises hydraulic piston and is fixed on the shift fork on the piston;
First jackshaft is a duplex gear shaft, two spur gear c on this, d respectively with cutter plate driver gear e, power input shaft on spur gear a engagement;
Spur gear i is installed on second jackshaft, spur gear i simultaneously with power input shaft on spur gear b and the spur gear f on the 3rd jackshaft be meshing with each other;
The 3rd jackshaft is a gear shaft;
Three fluted disc structures mainly comprise active toothed disk, fixed tooth disk and locking fluted disc; Fixed tooth disk is installed on the knife rest casing; The active toothed disk that is connected with cutterhead is connected on the cutter plate driver gear e by screw; Interstage sleeve is installed on the knife rest casing, and interstage sleeve, fixed tooth disk and active toothed disk will be locked fluted disc and sealed into a piston structure, on the locking fluted disc, is provided with spring;
The power driving device for cutter mainly comprises a pair of bevel gear g, the h that is installed on the gear-box, and wherein bevel gear g links to each other with the 3rd jackshaft through expansion set, and bevel gear h is connected with power cutter driving interface;
Two spur gear a on the described power input shaft, the end of b all have nested structure, are designed with internal thread and external screw thread on the nested structure respectively, and two nested structures are through being threaded together.
The nested structure of spur gear a is provided with a shoulder block on the described power input shaft; One ball bearing is installed on the nested structure of spur gear a through shoulder block, back-up ring and the spring collar of spur gear a; Be with bearing holder (housing, cover) on the outer ring of this ball bearing, fluted at bearing holder (housing, cover), the fork portion of shift fork inserts in this groove.
Described cutter plate driver gear e withstands on through thrust bearing and bearing gasket on the side of interstage sleeve, and the hydraulic oil lifting surface area of interstage sleeve is greater than the hydraulic oil lifting surface area of locking fluted disc.
The bevel gear g of described power driving device for cutter is fixed with ball bearing through its shaft shoulder and locking nut; The securing member utilization is threaded ball bearing and bevel gear g is fixed on the gear-box; Bevel gear h is fixed with ball bearing through its shaft shoulder and the power interface shaft shoulder, and ball bearing outer ring is inserted in the support set, and support set is inserted in gear-box; Gear-box is fixed on the back shroud through support member, two bevel gear g, the h transmission that is meshing with each other.
The beneficial effect of the invention: said structure is adopted in the invention, and servomotor drives power input shaft through safety coupling.Power input shaft is through being installed in the spur gear on the power input shaft, spur gear on first jackshaft and the rotation of cutter plate driver gear drive cutterhead.Power input shaft drives the power cutter through the spur gear on the power input shaft, the spur gear on second jackshaft, the spur gear on the 3rd jackshaft and the bevel-gear sett on the gear-box.The cutter plate driver gear withstands on through thrust bearing and bearing gasket on the side of interstage sleeve, and the hydraulic oil lifting surface area of interstage sleeve is greater than the hydraulic oil lifting surface area of locking fluted disc.Strengthened the working ability dorsad of cutter.Cutterhead adopts the BMT cutterhead, adopts cross positioning key and keyway to fit, and need not to regulate, and steps up high-clamping force, the rigidity of raising knife rest through four clamping screws.The clutch that the invention utilization is installed in spur gear and hydraulic pressure shifting fork mechanism on the power input shaft realizes powershift, has good rigidly, reverse working ability characteristics strong and easy for installation.
Description of drawings
Fig. 1 is the structural representation of the invention.
Fig. 2 is the generalized section of the invention.
Fig. 3 is the second jackshaft transmission principle figure of the invention.
Fig. 4 is the partial enlarged drawing of I among Fig. 2 (arrangement of clutch).
Fig. 5 is the shift fork sketch map of the invention.
Fig. 6 is the partial enlarged drawing of II among Fig. 2 (three fluted disc retaining mechanisms).
Fig. 7 is the partial enlarged drawing of III among Fig. 2 (gear-box).
Among the figure, 1 servomotor; 2 safety couplings; 3 axle sleeves; 4 ball bearings; 5 needle bearings; 6 back shrouds; 7 power input shafts; 7.1 external splines; 8 spur gear a; 8.1 nested structure; 8.2 internal thread; 8.3 internal spline; 8.4 shoulder block; 9 spur gear b; 9.1 nested structure; 9.2 external screw thread; 9.3 internal spline; 10 pistons; 10.1 oil pocket a; 10.2 oil pocket b; 11 shift forks; 11.1 fork portion; 12 bearing holder (housing, cover)s; 12.1 cover shoulder block; 12.2 groove; 13 ball bearings; 14 pads; 15 screws; 16 back-up rings; 17 spring collars; 18 first jackshafts; 18.1 spur gear c; 18.2 spur gear d; 19 second jackshafts; 20 cutter plate driver gear e; 21 the 3rd jackshafts; 21.1 spur gear f; 22 fixed tooth disks; 23 active toothed disks; 24 locking gears; 24.1 oil pocket c; 24.2 oil pocket d; 25 interstage sleeves; 26 thrust bearings; 27 bearing gaskets; 28 cutterheads; 28.1 cross keyway; 28.2 screwed hole; 29 knife rest casings; 30 screws; 31 springs; 32 bevel gear g; 32.1 the shaft shoulder; 33 bevel gear h; 33.1 the shaft shoulder; 34 gear-boxes; 35 screws; 36 ball bearings; 37 swelling covers; 38 pressing plates; 39 securing members; 40 pads; 41 ball bearings; 42 support sets; 43 power interfaces; 43.1 the power interface shaft shoulder; 44 locking nuts; 45 support members; 46 screws; 47 spur gear i; 48 needle bearings.
The specific embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, the single servo power knife rest of the present invention mainly comprises knife rest casing 29, back shroud 6, power input shaft 7, arrangement of clutch (mainly comprising piston 10 and shift fork 11), first jackshaft 18, second jackshaft 19, the 3rd jackshaft 21, three fluted disc structures (mainly comprising active toothed disk 23, fixed tooth disk 22 and locking fluted disc 24), power driving device for cutter (mainly comprising gear-box 34, bevel gear g32, bevel gear h33 and power interface 43) and cutterhead 28.
Cutterhead 28 is provided with the location cross keyway 28.1 used of tool rest, the screwed hole 28.2 that has fixing tool rest to use.
Internal spline 8.3 is arranged on the spur gear a8, and there is a nested structure 8.1 spur gear a8 end, and internal thread 8.2 is arranged on the nested structure 8.1; Nested structure 9.1 is arranged on the spur gear b9, external screw thread 9.2 is arranged on the nested structure 9.1, having external screw thread 9.2 to screw on the nested structure 8.1 on the nested structure 9.1 has in the internal thread 8.2.Spur gear a8 and spur gear b9 are inserted on the power input shaft 7 through internal spline 8.3 and internal spline 9.2 respectively.Spur gear a8 and spur gear b9 can be at power input shaft 7 upper edge A to sliding with the opposite direction of A.
One shoulder block 8.4 is arranged on the nested structure 8.1 of spur gear a8, and the inner ring of ball bearing 13 is enclosed within on the nested structure 8.1, utilizes fixedly ball bearing 13 inner rings of shoulder block 8.4 and back-up ring 16, spring collar 17.Be with bearing holder (housing, cover) 12 on the outer ring of ball bearing 13, utilize the fixedly outer ring of ball bearing 13 of screw 15 and pad 14 and bearing holder (housing, cover) 12.
Arrangement of clutch mainly comprises piston 10 and shift fork 11, and shift fork 11 is fixed on the piston 10, and the groove 12.2 of bearing holder (housing, cover) 12 is inserted in the fork portion 11.1 of shift fork 11.When hydraulic pressure was flowed into by oil pocket a10.1, piston 10 drove shift fork 11 and promotes spur gear a8 and moves in the other direction along A, and spur gear a8 and spur gear c18.1 break away from engagement, spur gear b9 and cutter plate driver gear e20 engaged transmission.When hydraulic pressure was flowed into by oil pocket b10.2, piston 10 drove shift fork 11 and promotes gear and moves along the A direction, spur gear a8 and spur gear c18.1 engaged transmission, and spur gear b9 and cutter plate driver gear e20 break away from engagement.
Three fluted disc structures mainly comprise active toothed disk 23, fixed tooth disk 22 and locking fluted disc 24.Fixed tooth disk 22 is installed on the knife rest casing 29, and active toothed disk 23 leans on screw 30 to be connected with cutter plate driver gear e20.Interstage sleeve 25 is installed on the knife rest casing 29, and cutter plate driver gear e20 withstands on the side of interstage sleeve 25 through thrust bearing 26 and bearing gasket 27.Fixed tooth disk 22, active toothed disk 23, cutter plate driver gear e20 and interstage sleeve 25 will be locked fluted disc 24 sealings becomes a piston structure, on locking fluted disc 24, is provided with spring 31.When hydraulic pressure was flow to by oil pocket c24.1, fixed tooth disk 22, active toothed disk 23 and locking fluted disc 24 teeth broke away from, and cutter plate driver gear e20 can drive active toothed disk 23 and cutterhead 28 rotations; When hydraulic pressure was flowed into by oil pocket d24.2, fixed tooth disk 22, active toothed disk 23 and locking fluted disc 24 teeth contacted locking active toothed disk 23.
Knife rest is adding man-hour dorsad; The active force of 28 pairs of active toothed disks 23 of cutterhead equals cutting force Fz; Hydraulic oil and spring 31 affact and are F1 making a concerted effort on the locking fluted disc 24; Hydraulic oil and spring 31 affact and are F1+F2 making a concerted effort on the interstage sleeve 25, and wherein, F2 is interstage sleeve 25 sides receive hydraulic oil greater than locking fluted disc 24 lateral parts a active force.For active toothed disk and and locking fluted disc between active force be r F1 (0 < r < 1), the maximum of knife rest process working ability dorsad is F2+ (1-r) F1.The existence of interstage sleeve 25 outer shrouds can improve the working ability dorsad of knife rest.
Power driving device for cutter structure is as shown in Figure 7, and the shaft shoulder 32.1 of bevel gear g32 and locking nut 44 be the inner ring of ball bearing 36 fixedly, and gear-box 34 is inserted in along axis X 1 direction in the outer ring of pad 40 and ball bearing 36.On the securing member 39 external screw thread is arranged, screw in fixedly ball bearing 36 outer rings of gear-box 34, ball bearing 36 is installed on the gear-box 34 with bevel gear g32.The shaft shoulder 33.1 of bevel gear h33 and the power interface shaft shoulder 43.1 be ball bearing 41 inner rings fixedly, and be inserted in the support set 42 ball bearing 41 outer rings, and support set 42 is inserted in the gear-box 34 along axis X 2.Bevel gear g32 and the bevel gear h33 transmission that is meshing with each other.Gear-box 34 is fixed on the support member 45 through screw 35, and support member 45 is fixed on the back shroud 6 through screw 46.
During the knife rest assembling, in advance bevel gear g32, bevel gear h33 are installed on the gear-box 34.Again the gear-box that assembles 34 is inserted the 3rd jackshaft 21, and, gear-box 34 is fixed on the support member 45 through screw 35 through swelling cover 37 and pressing plate 38 swelling bevel gear g32 and the 3rd jackshaft 21.
Claims (5)
1. based on single servo power knife rest of BMT cutterhead; It is characterized in that: comprise knife rest casing, back shroud, power input shaft, arrangement of clutch, first jackshaft, second jackshaft, the 3rd jackshaft, three fluted disc structures, power driving device for cutter and BMT cutterhead, wherein:
The power input shaft rear end is supported on the knife rest back shroud through axle sleeve and ball bearing; Front end is supported on the knife rest back shroud through needle bearing; And link to each other with servomotor through safety coupling, power input shaft links to each other with two spur gear a, spur gear b with internal spline through external splines;
Arrangement of clutch mainly comprises hydraulic piston and is fixed on the shift fork on the piston;
First jackshaft is a duplex gear shaft, two spur gear c on this, d respectively with cutter plate driver gear e, power input shaft on spur gear a engagement;
Spur gear i is installed on second jackshaft, spur gear i simultaneously with power input shaft on spur gear b and the spur gear f on the 3rd jackshaft be meshing with each other;
The 3rd jackshaft is a gear shaft;
Three fluted disc structures mainly comprise active toothed disk, fixed tooth disk and locking fluted disc; Fixed tooth disk is installed on the knife rest casing; The active toothed disk that is connected with cutterhead is connected on the cutter plate driver gear e by screw; Interstage sleeve is installed on the knife rest casing, and interstage sleeve, fixed tooth disk and active toothed disk will be locked fluted disc and sealed into a piston structure, on the locking fluted disc, is provided with spring;
The power driving device for cutter mainly comprises a pair of bevel gear g, the h that is installed on the gear-box, and wherein bevel gear g links to each other with the 3rd jackshaft through expansion set, and bevel gear h is connected with power cutter driving interface.
2. according to the described single servo power knife rest of claim 1 based on the BMT cutterhead; It is characterized in that: two spur gear a on the described power input shaft, the end of b all have nested structure; Be designed with internal thread and external screw thread on the nested structure respectively, two nested structures are through being threaded together.
3. according to claim 1 or 2 described single servo power knife rests based on the BMT cutterhead; It is characterized in that: the nested structure of spur gear a is provided with a shoulder block on the described power input shaft; One ball bearing is installed on the nested structure of spur gear a through shoulder block, back-up ring and the spring collar of spur gear a; Be with bearing holder (housing, cover) on the outer ring of this ball bearing, fluted at bearing holder (housing, cover), the fork portion of shift fork inserts in this groove.
4. according to the described single servo power knife rest of claim 1 based on the BMT cutterhead; It is characterized in that: described cutter plate driver gear e withstands on through thrust bearing and bearing gasket on the side of interstage sleeve, and the hydraulic oil lifting surface area of interstage sleeve is greater than the hydraulic oil lifting surface area of locking fluted disc.
5. according to the described single servo power knife rest of claim 1 based on the BMT cutterhead; It is characterized in that: the bevel gear g of described power driving device for cutter is fixed with ball bearing through its shaft shoulder and locking nut; The securing member utilization is threaded ball bearing and bevel gear g is fixed on the gear-box; Bevel gear h is fixed with ball bearing through its shaft shoulder and the power interface shaft shoulder, and ball bearing outer ring is inserted in the support set, and support set is inserted in gear-box; Gear-box is fixed on the back shroud through support member, two bevel gear g, the h transmission that is meshing with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125151 CN202621945U (en) | 2012-03-29 | 2012-03-29 | Single servo power knife rest based on basic motion time (BMT) cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125151 CN202621945U (en) | 2012-03-29 | 2012-03-29 | Single servo power knife rest based on basic motion time (BMT) cutter head |
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| Publication Number | Publication Date |
|---|---|
| CN202621945U true CN202621945U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220125151 Expired - Lifetime CN202621945U (en) | 2012-03-29 | 2012-03-29 | Single servo power knife rest based on basic motion time (BMT) cutter head |
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| CN (1) | CN202621945U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615298A (en) * | 2012-03-29 | 2012-08-01 | 沈阳机床（集团）设计研究院有限公司 | Single servo power cutter holder based on basic motion time (BMT) cutter disk |
| CN103357902A (en) * | 2013-06-19 | 2013-10-23 | 扬州欧普兄弟机械工具有限公司 | Electric knife rest |
| CN104551031A (en) * | 2014-12-26 | 2015-04-29 | 杭州三共机械有限公司 | Lathe tool table with random-angle positioning function and operating method of lathe tool table |
-
2012
- 2012-03-29 CN CN 201220125151 patent/CN202621945U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615298A (en) * | 2012-03-29 | 2012-08-01 | 沈阳机床（集团）设计研究院有限公司 | Single servo power cutter holder based on basic motion time (BMT) cutter disk |
| CN103357902A (en) * | 2013-06-19 | 2013-10-23 | 扬州欧普兄弟机械工具有限公司 | Electric knife rest |
| CN103357902B (en) * | 2013-06-19 | 2015-10-28 | 扬州欧普兄弟机械工具有限公司 | Electric driving tool post |
| CN104551031A (en) * | 2014-12-26 | 2015-04-29 | 杭州三共机械有限公司 | Lathe tool table with random-angle positioning function and operating method of lathe tool table |
| CN104551031B (en) * | 2014-12-26 | 2017-03-01 | 杭州三共机械有限公司 | The lathe tools platform of positioned at arbitrary angles and its operational approach |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |