CA2211081A1 - Lathe steady-rest - Google Patents
Lathe steady-restInfo
- Publication number
- CA2211081A1 CA2211081A1 CA 2211081 CA2211081A CA2211081A1 CA 2211081 A1 CA2211081 A1 CA 2211081A1 CA 2211081 CA2211081 CA 2211081 CA 2211081 A CA2211081 A CA 2211081A CA 2211081 A1 CA2211081 A1 CA 2211081A1
- Authority
- CA
- Canada
- Prior art keywords
- workpiece
- sleeve
- bearing
- lathe
- rest
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
- B23Q1/76—Steadies; Rests
- B23Q1/763—Rotating steadies or rests
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Machine Tool Units (AREA)
Abstract
The steady-rest is solid and rigid by virtue of the fact that the rest encircles the workpiece, and is tightly gripped thereto. The steady-rest is clamped tightly to the slideway rails of the lathe. As such, the rest supports the workpiece against cutting forces, and against vibrations and bouncing of the workpiece as it rotates.
Description
CA 022ll08l l997-07-2l Title: LATHE STEADY-REST
4 This invention relates to a steady-rest, of the kind used for supporting a workpiece when machining same in a lathe.
When machining a workpiece in a lathe, it is conventional practice to grip the 11 workpiece in a chuck in a headstock of the lathe. It is also conventional practice to 12 mount the workpiece between centres, the centres being located respectively in the 13 headstock and a tailstock of the lathe.
In either case, i.e whether the workpiece is mounted between centres, or gripped in a 16 chuck in the headstock, a steady-rest can be used. As a machining cut is applied to 17 the workpiece at a further distance away from the chuck, or from the centre, the 18 workpiece is increasingly likely to deflect away from the cutting tool by a non-19 negligible distance. The purpose of the steady-rest is to support the workpiece against this tendency.
22 Previous steady-rests have been used generally when the workpiece is mounted 23 between centres, i.e between the headstock and the tailstock. The conventional 24 steady-rest has been basically C-shaped, and was designed to be assembled radially with respect to the workplace, the gap in the "C" being large enough to enable the 26 steady-rest to be slipped over the workpiece in the radial sense. Generally, the 27 steady-rest was designed to be put in place after the workpiece had been mounted 28 between the centres.
Conventionally, the steady-rest was designed to be clamped to the slideway-rails of 31 the lathe. Alternatively, sometimes, the steady-rest was designed to be clamped to the 32 saddle-carriage of the lathe; in that case, the steady-rest moved axially along the - CA 022ll08l l997-07-2l workpiece, as the saddle-carriage was traversed, i.e the steady rest-moved relative to
4 This invention relates to a steady-rest, of the kind used for supporting a workpiece when machining same in a lathe.
When machining a workpiece in a lathe, it is conventional practice to grip the 11 workpiece in a chuck in a headstock of the lathe. It is also conventional practice to 12 mount the workpiece between centres, the centres being located respectively in the 13 headstock and a tailstock of the lathe.
In either case, i.e whether the workpiece is mounted between centres, or gripped in a 16 chuck in the headstock, a steady-rest can be used. As a machining cut is applied to 17 the workpiece at a further distance away from the chuck, or from the centre, the 18 workpiece is increasingly likely to deflect away from the cutting tool by a non-19 negligible distance. The purpose of the steady-rest is to support the workpiece against this tendency.
22 Previous steady-rests have been used generally when the workpiece is mounted 23 between centres, i.e between the headstock and the tailstock. The conventional 24 steady-rest has been basically C-shaped, and was designed to be assembled radially with respect to the workplace, the gap in the "C" being large enough to enable the 26 steady-rest to be slipped over the workpiece in the radial sense. Generally, the 27 steady-rest was designed to be put in place after the workpiece had been mounted 28 between the centres.
Conventionally, the steady-rest was designed to be clamped to the slideway-rails of 31 the lathe. Alternatively, sometimes, the steady-rest was designed to be clamped to the 32 saddle-carriage of the lathe; in that case, the steady-rest moved axially along the - CA 022ll08l l997-07-2l workpiece, as the saddle-carriage was traversed, i.e the steady rest-moved relative to
2 the workpiece.
4 Conventionally, the steady-rest has had three pads. The three pads are adjustable (radially) to the diametral size of the workpiece. Two-pad steady-rests have also been 6 used, mainly for screw-cutting.
8 Conventionally, steady-rests have been used mainly with long, thin workpieces, which g are mounted between centres.
14 A steady-rest as described herein is aimed at being substantially as robust as the lathe itself. That is to say, the steady-rest is itself solid and rigid, as those terms are used in 16 the context of a machine tool such as a lathe, wherein much of the cost of the 17 machine tool lies in providing a massive bulk of material.
19 The steady-rest is rendered solid and rigid by virtue of the fact that the rest encircles the workpiece, and is tightly gripped thereto. The steady-rest is clamped tightly to the 21 slideway rails of the lathe. As such, the rest supports the workpiece not only against 22 the (predictable) cutting forces, but also against spurious forces due to vibrations and 23 bouncing of the workpiece as it rotates. The steady-rest supports the workpiece, and 24 holds it firm, against forces applied to the workpiece from all radial directions.
29 By way of further explanation of the invention, exemplary embodiments of theinvention will now be described with reference to the accompanying drawings, in 31 which:
CA 022ll08l l997-07-2l Fig 1 is a pictorial view of a lathe, in which has been included a rotary steady rest, in 2 accordance with the invention;
4 Conventionally, the steady-rest has had three pads. The three pads are adjustable (radially) to the diametral size of the workpiece. Two-pad steady-rests have also been 6 used, mainly for screw-cutting.
8 Conventionally, steady-rests have been used mainly with long, thin workpieces, which g are mounted between centres.
14 A steady-rest as described herein is aimed at being substantially as robust as the lathe itself. That is to say, the steady-rest is itself solid and rigid, as those terms are used in 16 the context of a machine tool such as a lathe, wherein much of the cost of the 17 machine tool lies in providing a massive bulk of material.
19 The steady-rest is rendered solid and rigid by virtue of the fact that the rest encircles the workpiece, and is tightly gripped thereto. The steady-rest is clamped tightly to the 21 slideway rails of the lathe. As such, the rest supports the workpiece not only against 22 the (predictable) cutting forces, but also against spurious forces due to vibrations and 23 bouncing of the workpiece as it rotates. The steady-rest supports the workpiece, and 24 holds it firm, against forces applied to the workpiece from all radial directions.
29 By way of further explanation of the invention, exemplary embodiments of theinvention will now be described with reference to the accompanying drawings, in 31 which:
CA 022ll08l l997-07-2l Fig 1 is a pictorial view of a lathe, in which has been included a rotary steady rest, in 2 accordance with the invention;
3 Fig 2 is a another view of the lathe and steady rest of Fig 1, shown with a cutting tool
4 in position;
Fig 3 is a pictorial view of the steady rest of Fig 1;
6 Fig 4 is an end elevation, partly cross-sectioned, of the rotary steady rest of Fig 1;
7 Fig 5 is a cross-sectioned side elevation of the rotary steady rest of Fig 1;
8 Fig 6 is the same view as Fig 5, with the components of the rotary steady rest shown g exploded;
Fig 7 is a view of another embodiment.
12 The apparatuses shown in the accompanying drawings and described below are 13 examples which embody the invention. It should be noted that the scope of the 14 invention is defined by the accompanying claims, and not necessarily by specific features of exemplary embodiments.
17 Fig 1 shows a lathe 20, which includes a bed 23, having two slideway-rails 25,27. One 18 of the rails 25 is plain, and the other rail 27 is inverted-V-shaped. A headstock 28 of 19 the lathe 20 contains the usual gearbox and drive shaft, which culminates in a chuck 29, which in this case is of the three-jaw type.
22 A workpiece 30 is in the form of an elongate cylindrical prism, and the workpiece is of 23 such dimensions in relation to the chuck 29 as to protrude out from the chuck, and 24 over the bed, for some considerable axial distance.
26 The outer end of the workpiece 30 is supported in the rotary steady-rest 32. As 27 shown in Fig 2, the arrangement gives excellent access for machining the end 34 of 28 the workpiece 30. Operations such as facing the end of the workpiece, turning the 29 outside surface of the workpiece near the end, boring and drilling into the end of the workpiece, and so on, can all be carried out, notwithstanding the presence of the 31 steady-rest 32. Machining a centre-cone in the end-face of the workpiece can be 32 done simply, and accurately. Yet the steady-rest 32 provides excellent alleviation of CA 022ll08l l997-07-2l problems due to what would, in the absence of the steady rest, be a large overhang of 2 the workpiece from the 3jaw chuck 29.
4 The steady-rest 32 can also be so placed as to allow access for machining the main length of the workpiece.
7 The steady-rest 32 comprises includes a ball-bearing 35, the outer race 36 of which is 8 pressed into a ring 38. A sleeve 40 is pressed into the inner race 43 of the bearing 9 35.
1l The ring 38 is solid with a bolster-plate 45. The bolster-plate is shaped underneath to 12 fit the slideway-rails 25,27. An under-plate 47 is located underneath the bolster-plate 13 45, whereby the bolster-plate can be clamped and gripped tightly to the slideway-rails.
The steady-rest 32 is mounted on the slideway-rails, and is independent of the saddle-16 carriage 48 of the lathe. The steady-rest can go between the headstock and the 17 saddle-carriage, or can go on the other side of the saddle-carriage from the18 headstock. If the workpiece is very long, the tailstock may be used to locate the 19 remote end of the workpiece, with the steady-rest (or rests) placed intermediate therebetween. In particular, however, the steady-rest as described, when in place, 21 provides access for machining the surfaces at or near the end 34 of the workpiece.
22 By the use of the steady-rest, the workpiece is as accurately supported as if it were 23 between centres, and yet full access is provided to the end of the workpiece.
The sleeve 40 is provided with a flange 50, which carries four brass pins 52. The 26 brass pins are coupled to respective adjusting screws 54, whereby the pins may be 27 screwed radially in and out. The pins serve as a four-jaw chuck for gripping the 28 workpiece, whereby the workpiece may be centred in the sleeve 40, and hence in the 29 bearing 35. The four adjusting screws 54 should be adjusted for zero run-out of the workpiece, at the steady-rest. Conventional 4jaw-chuck-setting procedures may be31 used, using a dial-gauge mounted from the slideway-rails.
CA 022ll08l l997-07-2l The steady-rest as described stays in place, clamped solidly to the slideway-rails, 2 during a machining operation. If the operator desires to move the steady-rest to a 3 different position with respect to the workpiece, and to the slideway, he would follow 4 the procedure: 1. withdraw the brass pins outwards, clear of the workpiece; unclamp the steady-rest from the slideway-rails; move the steady rest along the rails, and along 6 the workpiece, to the new position; re-clamp the steady rest to the slideway-rails; re-7 position the four brass pins tightly against the shaft, using a dial-gauge as necessary 8 to ensure that the gripped workpiece rotates with zero run-out. As such, repositioning g of the steady-rest partway through machining the workpiece, should be avoided, if possible. Of course, turning the workpiece round end-to-end in the lathe is required in 11 many cases, and of course the steady rest will need to be re-set in that case.
13 The steady-rest as described is massively rigid. Given that a lathe is usually a rather 14 massive structure, the steady-rest is in keeping with that characteristic. The design as described matches the rigidity of the steady-rest to that of the lathe. The steady-rest 16 as described does not have such a degree of rigidity as would be wasteful; and yet 17 the steady-rest is solid and rigid enough to allow the full rigidity-potential of the lathe 18 to be realised, under a wide variety of machining circumstances. Previous designs of 19 steady-rest have not been very solid, or have allowed the workpiece to bounce or otherwise move during cutting, or have been flimsy enough that the workpiece was21 not effectively prevented from deflecting away from the cutting tool.
23 It may be noted that the steady-rest as described herein is intended to support only 24 radial or journal loads on the workpiece. Any thrust or axial loads on the workpiece would be taken by the chuck in the headstock.
27 In carrying out the task of gripping the four brass pins to the workpiece, the operator 28 should ensure that the workpiece does not run out. As mentioned, a dial gauge, 29 mounted on the slideway-rails, can be used to ensure zero run-out. Alternatively, the sleeve of the steady-rest can be provided with a 3jaw (self-centering) chuck in place 31 of the four independently-adjustable brass pins. Alternatively again, the sleeve of the 32 steady-rest can be provided with an axially-tightenable collet. That is to say: the kinds CA 022ll08l l997-07-2l of means for chucking workpieces that are used in lathe headstocks can also be used 2 in the sleeve of the steady-rest.
4 The steady-rest 32, as manufactured, is suitable for use only with a particular type and size of lathe. The ball-bearing 35 requires to be concentric with the headstock spindle 6 of the lathe, which means that the height of the centre of the bearing above the 7 bolster-plate 45 depends on the height of the headstock spindle above the slideway-8 rails 25,27. A steady-rest for a different lathe would be manufactured to different g dimensions.
11 In an alternative embodiment (Fig 7) the steady-rest can be made somewhat 12 adjustable, to suit different lathes. The ring 63 is bolted to a ring-plate 65, which is 13 fast with the bolster-plate 67. Thus, the ring 63 itself (with the bearing housed within) 14 can be adjusted as to its height above the slideway-rails.
Fig 3 is a pictorial view of the steady rest of Fig 1;
6 Fig 4 is an end elevation, partly cross-sectioned, of the rotary steady rest of Fig 1;
7 Fig 5 is a cross-sectioned side elevation of the rotary steady rest of Fig 1;
8 Fig 6 is the same view as Fig 5, with the components of the rotary steady rest shown g exploded;
Fig 7 is a view of another embodiment.
12 The apparatuses shown in the accompanying drawings and described below are 13 examples which embody the invention. It should be noted that the scope of the 14 invention is defined by the accompanying claims, and not necessarily by specific features of exemplary embodiments.
17 Fig 1 shows a lathe 20, which includes a bed 23, having two slideway-rails 25,27. One 18 of the rails 25 is plain, and the other rail 27 is inverted-V-shaped. A headstock 28 of 19 the lathe 20 contains the usual gearbox and drive shaft, which culminates in a chuck 29, which in this case is of the three-jaw type.
22 A workpiece 30 is in the form of an elongate cylindrical prism, and the workpiece is of 23 such dimensions in relation to the chuck 29 as to protrude out from the chuck, and 24 over the bed, for some considerable axial distance.
26 The outer end of the workpiece 30 is supported in the rotary steady-rest 32. As 27 shown in Fig 2, the arrangement gives excellent access for machining the end 34 of 28 the workpiece 30. Operations such as facing the end of the workpiece, turning the 29 outside surface of the workpiece near the end, boring and drilling into the end of the workpiece, and so on, can all be carried out, notwithstanding the presence of the 31 steady-rest 32. Machining a centre-cone in the end-face of the workpiece can be 32 done simply, and accurately. Yet the steady-rest 32 provides excellent alleviation of CA 022ll08l l997-07-2l problems due to what would, in the absence of the steady rest, be a large overhang of 2 the workpiece from the 3jaw chuck 29.
4 The steady-rest 32 can also be so placed as to allow access for machining the main length of the workpiece.
7 The steady-rest 32 comprises includes a ball-bearing 35, the outer race 36 of which is 8 pressed into a ring 38. A sleeve 40 is pressed into the inner race 43 of the bearing 9 35.
1l The ring 38 is solid with a bolster-plate 45. The bolster-plate is shaped underneath to 12 fit the slideway-rails 25,27. An under-plate 47 is located underneath the bolster-plate 13 45, whereby the bolster-plate can be clamped and gripped tightly to the slideway-rails.
The steady-rest 32 is mounted on the slideway-rails, and is independent of the saddle-16 carriage 48 of the lathe. The steady-rest can go between the headstock and the 17 saddle-carriage, or can go on the other side of the saddle-carriage from the18 headstock. If the workpiece is very long, the tailstock may be used to locate the 19 remote end of the workpiece, with the steady-rest (or rests) placed intermediate therebetween. In particular, however, the steady-rest as described, when in place, 21 provides access for machining the surfaces at or near the end 34 of the workpiece.
22 By the use of the steady-rest, the workpiece is as accurately supported as if it were 23 between centres, and yet full access is provided to the end of the workpiece.
The sleeve 40 is provided with a flange 50, which carries four brass pins 52. The 26 brass pins are coupled to respective adjusting screws 54, whereby the pins may be 27 screwed radially in and out. The pins serve as a four-jaw chuck for gripping the 28 workpiece, whereby the workpiece may be centred in the sleeve 40, and hence in the 29 bearing 35. The four adjusting screws 54 should be adjusted for zero run-out of the workpiece, at the steady-rest. Conventional 4jaw-chuck-setting procedures may be31 used, using a dial-gauge mounted from the slideway-rails.
CA 022ll08l l997-07-2l The steady-rest as described stays in place, clamped solidly to the slideway-rails, 2 during a machining operation. If the operator desires to move the steady-rest to a 3 different position with respect to the workpiece, and to the slideway, he would follow 4 the procedure: 1. withdraw the brass pins outwards, clear of the workpiece; unclamp the steady-rest from the slideway-rails; move the steady rest along the rails, and along 6 the workpiece, to the new position; re-clamp the steady rest to the slideway-rails; re-7 position the four brass pins tightly against the shaft, using a dial-gauge as necessary 8 to ensure that the gripped workpiece rotates with zero run-out. As such, repositioning g of the steady-rest partway through machining the workpiece, should be avoided, if possible. Of course, turning the workpiece round end-to-end in the lathe is required in 11 many cases, and of course the steady rest will need to be re-set in that case.
13 The steady-rest as described is massively rigid. Given that a lathe is usually a rather 14 massive structure, the steady-rest is in keeping with that characteristic. The design as described matches the rigidity of the steady-rest to that of the lathe. The steady-rest 16 as described does not have such a degree of rigidity as would be wasteful; and yet 17 the steady-rest is solid and rigid enough to allow the full rigidity-potential of the lathe 18 to be realised, under a wide variety of machining circumstances. Previous designs of 19 steady-rest have not been very solid, or have allowed the workpiece to bounce or otherwise move during cutting, or have been flimsy enough that the workpiece was21 not effectively prevented from deflecting away from the cutting tool.
23 It may be noted that the steady-rest as described herein is intended to support only 24 radial or journal loads on the workpiece. Any thrust or axial loads on the workpiece would be taken by the chuck in the headstock.
27 In carrying out the task of gripping the four brass pins to the workpiece, the operator 28 should ensure that the workpiece does not run out. As mentioned, a dial gauge, 29 mounted on the slideway-rails, can be used to ensure zero run-out. Alternatively, the sleeve of the steady-rest can be provided with a 3jaw (self-centering) chuck in place 31 of the four independently-adjustable brass pins. Alternatively again, the sleeve of the 32 steady-rest can be provided with an axially-tightenable collet. That is to say: the kinds CA 022ll08l l997-07-2l of means for chucking workpieces that are used in lathe headstocks can also be used 2 in the sleeve of the steady-rest.
4 The steady-rest 32, as manufactured, is suitable for use only with a particular type and size of lathe. The ball-bearing 35 requires to be concentric with the headstock spindle 6 of the lathe, which means that the height of the centre of the bearing above the 7 bolster-plate 45 depends on the height of the headstock spindle above the slideway-8 rails 25,27. A steady-rest for a different lathe would be manufactured to different g dimensions.
11 In an alternative embodiment (Fig 7) the steady-rest can be made somewhat 12 adjustable, to suit different lathes. The ring 63 is bolted to a ring-plate 65, which is 13 fast with the bolster-plate 67. Thus, the ring 63 itself (with the bearing housed within) 14 can be adjusted as to its height above the slideway-rails.
Claims (7)
- CLAIM 1. A steady-rest apparatus for use with a lathe, wherein:
the apparatus includes a bolster-plate, which includes means for clamping the apparatus solidly to a bed of the lathe;
the apparatus includes a bearing-ring, and the ring is solid with the bolster-plate;
the apparatus includes a rotary bearing, a stator of which is mounted in the bearing-ring;
the apparatus is so configured that, when the apparatus is mounted in a lathe, the axis of the rotary bearing is co-axial with the axis of the headstock spindle of the lathe;
the apparatus includes a sleeve, which is mounted in a rotor of the bearing;
the sleeve is so configured as to define a through-passage of the sleeve, whereby the sleeve can be moved axially along relative to a workpiece;
the sleeve carries a chucking means, whereby the sleeve can be chucked tightly to the workpiece;
the sleeve is complete circumferentially, and the bearing is complete circumferentially, whereby the sleeve cannot be assembled to the workpiece in a radial sense, but can be assembled over the workpiece in an axial direction, over a free end of the workpiece; - CLAIM 2. Apparatus of claim 1, wherein:
the bearing is a ball bearing, having an inner-race and an outer-race;
the outer-race is pressed into the bearing-ring, and the sleeve is pressed into the inner-race. - CLAIM 3. Apparatus of claim 1, wherein the bolster-plate includes a means formounting same from the slideway-rails of the lathe, and includes an under-plate for clamping same to the rails.
- CLAIM 4. Apparatus of claim 1, wherein the apparatus is of a generally heavy androbust construction, to the extent that a workpiece held in the chucking means of the apparatus, is held substantially as solidly as a workpiece held in the chuck of the lathe.
- CLAIM 5. Apparatus of claim 1, wherein the chucking means comprises a chuck, having jaws, in which each of the jaws is movable radially with respect to a workpiece placed in the sleeve, and is movable independently of the other jaws.
- CLAIM 6. Apparatus of claim 5, wherein the chucking means includes an adjustablegripping means, and a means for adjusting same as to its position radially relative to a workpiece placed in the sleeve, and the means is so configured as to be adjustable to a position of zero run-out relative to the bearing.
- CLAIM 7. Apparatus of claim 1, wherein:
the bearing is a ball bearing, having an inner-race and an outer-race;
the outer-race is pressed into the bearing-ring, and the sleeve is pressed into the inner-race;
the bolster-plate includes a means for mounting same from the slideway-rails of the lathe, and includes an under-plate for clamping same to the rails;
the apparatus is of a generally heavy and robust construction, to the extent that a workpiece held in the chucking means of the apparatus, is held substantially as solidly as a workpiece held in the chuck of the lathe;
the chucking means comprises a chuck, having jaws, in which each of the jaws is movable radially with respect to a workpiece placed in the sleeve, and is movable independently of the other jaws;
the chucking means includes an adjustable gripping means, and a means for adjusting same as to its position radially relative to a workpiece placed in thesleeve, and the means is so configured as to be adjustable to a position of zero run-out relative to the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2211081 CA2211081A1 (en) | 1997-07-21 | 1997-07-21 | Lathe steady-rest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2211081 CA2211081A1 (en) | 1997-07-21 | 1997-07-21 | Lathe steady-rest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2211081A1 true CA2211081A1 (en) | 1999-01-21 |
Family
ID=29274893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2211081 Abandoned CA2211081A1 (en) | 1997-07-21 | 1997-07-21 | Lathe steady-rest |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2211081A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2218542A3 (en) * | 2009-02-16 | 2010-10-20 | Burgsmüller GmbH | Stabilisation support |
| ITMO20100279A1 (en) * | 2010-10-05 | 2012-04-06 | Maccaferri S R L Off | MACHINE TOOL FOR MECHANICAL MACHINING |
| ITMO20100278A1 (en) * | 2010-10-05 | 2012-04-06 | Maccaferri S R L Off | MACHINE TOOL FOR MECHANICAL MACHINING |
| CN102922352A (en) * | 2011-08-12 | 2013-02-13 | 成都科盛石油科技有限公司 | Support device used for strengthening revolution stability of workpieces |
| CN108127422A (en) * | 2017-12-29 | 2018-06-08 | 江苏新银叶传动机电有限公司 | Lengthen square bar turning centre frame |
| CN113909929A (en) * | 2021-11-05 | 2022-01-11 | 滁州辉煌无纺科技有限公司 | Intermediate bracket mechanism for processing super-long columnar workpiece |
-
1997
- 1997-07-21 CA CA 2211081 patent/CA2211081A1/en not_active Abandoned
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2218542A3 (en) * | 2009-02-16 | 2010-10-20 | Burgsmüller GmbH | Stabilisation support |
| ITMO20100279A1 (en) * | 2010-10-05 | 2012-04-06 | Maccaferri S R L Off | MACHINE TOOL FOR MECHANICAL MACHINING |
| ITMO20100278A1 (en) * | 2010-10-05 | 2012-04-06 | Maccaferri S R L Off | MACHINE TOOL FOR MECHANICAL MACHINING |
| WO2012046117A1 (en) * | 2010-10-05 | 2012-04-12 | Officina Maccaferri S.R.L. | Machine tool for mechanical machining |
| CN102922352A (en) * | 2011-08-12 | 2013-02-13 | 成都科盛石油科技有限公司 | Support device used for strengthening revolution stability of workpieces |
| CN108127422A (en) * | 2017-12-29 | 2018-06-08 | 江苏新银叶传动机电有限公司 | Lengthen square bar turning centre frame |
| CN113909929A (en) * | 2021-11-05 | 2022-01-11 | 滁州辉煌无纺科技有限公司 | Intermediate bracket mechanism for processing super-long columnar workpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |