CN205057521U - Compound lathe lathe bed - Google Patents
Compound lathe lathe bed Download PDFInfo
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- CN205057521U CN205057521U CN201520848887.XU CN201520848887U CN205057521U CN 205057521 U CN205057521 U CN 205057521U CN 201520848887 U CN201520848887 U CN 201520848887U CN 205057521 U CN205057521 U CN 205057521U
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- lathe bed
- lateral partitions
- lathe
- bearing diagonal
- bed body
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Abstract
The utility model discloses a compound lathe lathe bed belongs to numerical control machine tool field. It includes lathe bed body, two diagonal bracing plate, abdomen gusset and horizontal separators, two diagonal bracing plate form " V " font structures and set up in the cavity of lathe bed body, horizontal separators set up between two diagonal bracing plate, horizontal separators's appearance is the shape that upper and lower lateral wall enclosed of two diagonal bracing plate and lathe bed body, the abdomen gusset be long bar -type texture, the abdomen gusset sets up in the centre of last lateral wall medial surface along length direction, abdomen gusset and horizontal separators formation crossing structure. The utility model discloses can lathe bed section contour be the closed compound structure that rectangle and triangle -shaped form, under the prerequisite that lightens lathe lathe bed weight, the rigidity of effectively guaranteeing lathe lathe bed under the high speed machining condition with cushion the characteristic, have rational in infrastructurely, arrange succinctly advantages such as easy manufacturing.
Description
Technical field
The utility model belongs to numerical control machine tool mechanical field, relates to a kind of lathe bed of lathe, more particularly, relates to a kind of compound bed piece.
Background technology
Lathe is that main lathe tool carries out the lathe of turnery processing to the workpiece rotated, and its main building block has: main spindle box, change gear box, feed box, slip crate, knife rest, tailstock, feed rod, leading screw, lathe bed etc.Lathe bed is wherein lathe with large foundation parts of the very high guide rail (San shape guide rail and level gauge) of required precision, for all parts supported be connected lathe, and ensures that each parts operationally have relative position accurately.
Along with machining center is towards the future development of high cutting speed, high feed speed and high manufacturing accuracy, as the lathe bed of lathe vitals, its dynamic property is related to the service behaviour of whole lathe, the design size of structure of numerical control machine body and distribution form, determine each dynamic characteristic of itself.The inner gusset of bed piece of current domestic machining center is arranged and is all adopted well word muscle, because lathe bed structure and inner gusset design unreasonable, blindly increases the quantity of gusset, causes the insufficient rigidity of lathe bed, produce various distortion, vibration.In addition, due to the existence of natural frequency of object, lathe always has vibration, strengthens rigidity simply and makes the excessive rigidifying of lathe, lathe is become release that a rigid unitary have impact on vibrational energy.High speed or high precision machine tool, all need lathe bed to have excellent damping characteristics, the damping characteristics of bed piece refers to the EAC when lathe is subject to dynamic loading, and it is the key factor affecting machine finish, process velocity, life tools.Current machine tool lathe bed positioning precision when high-speed cutting processing, fast movement is no more than 3um.
The Optimal improvements of machine tool body structure is existing a lot, if China Patent Publication No. is CN202701782U, publication date is the patent document on January 30th, 2013, disclose a kind of bed piece of double-walled construction, it comprises lathe bed body, and the sidewall of described lathe bed is the double-decker with inner and outer wall, is provided with connector between the inner walls and the outer, described connector is connecting plate or pitman, and the bed piece of such double-walled construction has the advantage that can reduce weight, reduce costs.
And for example China Patent Publication No. is CN204308565U, publication date is the patent document on May 6th, 2015, disclose a kind of bed piece, it comprises lathe bed body, and described lathe bed body interior hollow forms cavity, and one deck corrosion resistant plate is stamped on surface, some first bearing diagonal plates and some second bearing diagonal plates is provided with in cavity, described some first bearing diagonal plates and some second bearing diagonal plates are crisscross arranged in cavity, and top contacts with corrosion resistant plate, and bottom contacts with cavity floor.The power that the lathe bed of the program can bear is large, and gripper shoe is swash plate, and different from the activity direction of bed piece surface nothing, be not easy lathe bed to damage by pressure, stability is high.
Above-mentioned two schemes is all arrange multiple connector or gripper shoe in bed piece, alleviate lathe bed weight or increase lathe bed holding capacity, not only complex structure own, manufacture difficulty, and they all do not consider rigidity and the damping characteristics of bed piece, the processing request of lathe high cutting speed, high feed speed and high manufacturing accuracy etc. can not be met, need further to improve.
Summary of the invention
The problem that 1, will solve
The problem of the low and damping characteristics difference of the rigidity for existing bed piece, the utility model provides a kind of compound bed piece, to lathe bed structure optimal design, makes its Static stiffness under dynamic load effect maximum, the design of lathe bed internal stiffeners plate structure, makes the lathe bed natural frequency of vibration maximize simultaneously; Lathe bed cross section profile is the composite structured of rectangle and triangle composition, under the prerequisite alleviating bed piece weight, effectively ensures its rigidity and damping characteristics, has rational in infrastructure, arrange succinct, be easy to the advantages such as manufacture.
2, technical scheme
For solving the problem, the utility model adopts following technical scheme.
A kind of compound bed piece, comprise lathe bed body, two bearing diagonal plates, abdomen gusset and lateral partitions, it is the cavity of rectangle that described lathe bed body interior hollow forms cross section, lathe bed body comprises front-rear side walls, left and right sidewall, upper side wall and lower wall, two described bearing diagonal plates are positioned at the cavity of lathe bed body, one end of two bearing diagonal plates is connected with the both sides of upper side wall respectively, the other end of two bearing diagonal plates all with in the middle of lower wall is connected, and two bearing diagonal plates form " V " character form structure; Described lateral partitions is arranged between two bearing diagonal plates, the shape that the profile of lateral partitions surrounds for two bearing diagonal plates and upper side wall and lower wall; Described abdomen gusset is string configuration, and abdomen gusset is arranged on the centre of upper side wall medial surface along its length, and abdomen gusset and lateral partitions form criss-cross construction.
Preferentially, described lateral partitions has multiple, parallels between two between multiple lateral partitions.
Preferentially, described lateral partitions has 2-6, and the distance between adjacent two lateral partitions is equal.
Preferentially, described lateral partitions has 4.
Preferentially, the left and right sidewall of described lathe bed body, lower wall, lateral partitions, bearing diagonal plate between left and right sidewall and lateral partitions and between two lateral partitions are equipped with manhole, and this manhole is fabrication hole.
Preferentially, the center of the fabrication hole in the left and right sidewall of described lathe bed body, bearing diagonal plate and lateral partitions is in same level.
Preferentially, described bearing diagonal plate and the angle of horizontal plane are 45 °-60 °.
Preferentially, the centre of described lathe bed body upper side wall is 1 °-5 ° with the angle of horizontal plane in the longitudinal direction.
Preferentially, the height of described abdomen gusset is 2-3 times of lathe bed body upper side wall thickness, and the thickness of abdomen gusset is 0.8 times of lathe bed body upper side wall thickness.
3, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) in the utility model, one end of two bearing diagonal plates is connected with the both sides of upper side wall respectively, the other end of two bearing diagonal plates all with in the middle of lower wall is connected, two bearing diagonal plates form " V " character form structure, lateral partitions is arranged between two bearing diagonal plates, the shape that the profile of lateral partitions surrounds for two bearing diagonal plates and upper side wall and lower wall, abdomen gusset is string configuration, abdomen gusset is arranged on the centre of upper side wall medial surface along its length, and abdomen gusset and lateral partitions form criss-cross construction; Reasonable Arrangement bearing diagonal plate, abdomen gusset and lateral partitions in lathe bed body interior cavity, lathe bed cross section is made to be that rectangle and leg-of-mutton closed box-shaped are composite structured, improve the bending resistance of lathe bed and the combination property of torsional rigidity and damping characteristics, make it have better vibration resistance and stability, below 3um is reached in machine tool high speed machining and positioning precision when moving fast, meet the processing request of lathe high cutting speed, high feed speed and high manufacturing accuracy etc., in addition, this kind of version lathe bed lighter in weight;
(2) the utility model arranges interval and the quantity of lateral partitions according to lathe bed length, and with combinationally using of abdomen gusset, local deformation when preventing lathe bed upper side wall from bearing pressure bends;
(3) the utility model is equipped with manhole on the left and right sidewall of lathe bed body, lower wall, lateral partitions, bearing diagonal plate between left and right sidewall and lateral partitions and between two lateral partitions, under the prerequisite not affecting lathe bed strength and stiffness, effectively alleviate lathe bed weight, and there is Stress Release effect;
(4) angle of the utility model bearing diagonal plate and horizontal plane is 45 °-60 °, and in this angular range, bearing diagonal plate has firm support performance;
(5) centre of the utility model lathe bed body upper side wall is 1 °-5 ° with the angle of horizontal plane in the longitudinal direction, is the needs of use, is also conducive to the processing and manufacturing of lathe bed;
(6) height of the utility model abdomen gusset is 2-3 times of lathe bed body upper side wall thickness, the thickness of abdomen gusset is 0.8 times of lathe bed body upper side wall thickness, detect in conjunction with gained according to theory calculate and actual tests, ensure that best structural strength, avoid the weight that lathe bed is unnecessary;
(7) the utility model can be cast as overall structure, and the bonding strength between each parts is good.
Accompanying drawing explanation
Fig. 1 is front sectional view of the present utility model;
Fig. 2 is that sectional view is looked on a left side of the present utility model.
In figure: 1, bearing diagonal plate; 2, abdomen gusset; 3, lateral partitions; 4, fabrication hole.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is described further.
Embodiment 1
As depicted in figs. 1 and 2, the compound bed piece of one of the present embodiment, comprises lathe bed body, two bearing diagonal plates 1, abdomen gusset 2 and lateral partitions 3; It is the cavity of rectangle that described lathe bed body interior hollow forms cross section, lathe bed body comprises front-rear side walls, left and right sidewall, upper side wall and lower wall, wherein, in the present embodiment, according to using and the needs of manufacturing process, the centre of lathe bed body upper side wall is inclined plane in the longitudinal direction, is 1 ° with the angle of horizontal plane.Two described bearing diagonal plates 1 are positioned at the cavity of lathe bed body, and one end of two bearing diagonal plates 1 is connected with the both sides of upper side wall respectively, and the other end of two bearing diagonal plates 1 all with in the middle of lower wall is connected, and two bearing diagonal plates 1 form " V " character form structure.In the present embodiment, two bearing diagonal plates 1 are 45 ° with the angle of horizontal plane, have good stable support function.
Described lateral partitions 3 is arranged between two bearing diagonal plates 1, the shape that the profile of lateral partitions 3 surrounds with upper side wall and lower wall for two bearing diagonal plates 1; Lateral partitions 3 has 2, is uniformly distributed along bearing diagonal plate 1 length direction.Described abdomen gusset 2 is string configuration, and abdomen gusset 2 is arranged on the centre of upper side wall medial surface along its length, and abdomen gusset 2 and lateral partitions 3 form criss-cross construction.In the present embodiment, the height of abdomen gusset 2 is 2 times of lathe bed body upper side wall thickness, and the thickness of abdomen gusset 2 is 0.8 times of lathe bed body upper side wall thickness, by rational optimal design, under the prerequisite of rigidity ensureing structure, alleviate lathe bed weight, reduce machine vibration.The lathe bed body interior reasonable Arrangement abdomen gusset 2 of lathe and lateral partitions 3, well can resist lathe by the local deformation produced during longitudinal force.
In the present embodiment, in order to the technique needs processed, and alleviate the weight of lathe bed further, the left and right sidewall of described lathe bed body, lower wall, lateral partitions 3, bearing diagonal plate 1 between left and right sidewall and lateral partitions 3 and between two lateral partitions 3 are equipped with manhole, and this manhole is fabrication hole 4; Further, the center of the fabrication hole 4 in the left and right sidewall of described lathe bed body, bearing diagonal plate 1 and lateral partitions 3 is in same level.
Traditional lathe bed cross section profile is rectangular configuration, and its rigidity can use following formulae discovery: GI
n=B
2eI
by/ (akL
2+ aEI
by/ GF
b).In the present embodiment, reasonable Arrangement bearing diagonal plate 1, abdomen gusset 2 and lateral partitions 3 in lathe bed, lathe bed cross section profile is two closed box-shaped composite constructions of triangle and rectangle composition, and its Rigidity Calculation is: GI
n=kB
2eI
by/ L
2.Wherein, in above-mentioned two formula: GI
nfor the antitorque section rigidity of lathe bed, B is lathe bed width, and E is elasticity modulus of materials, I
byfor the bending the moment of inertia of lathe bed cross section in vertical plane, L is the length of lathe bed crushed element, and G is material shear modulus, F
bfor lathe bed area of section, k, a are constant coefficient.Can be very easy to find from above-mentioned formula, obvious lathe bed cross section profile is that two rigidity closing box-shaped composite construction of triangle and rectangle composition are greater than the rigidity that lathe bed cross section profile is rectangular configuration.
In prior art, cutting at height for enabling machining center, working under high feed speed and high manufacturing accuracy condition, arrange at the inner gusset of bed piece and all adopt well word muscle, this mode lathe bed structure and inner gusset design unreasonable, and on well word muscle basis, blindly increase the quantity of gusset, cause the insufficient rigidity of lathe bed, produce various distortion, vibration; And strengthen rigidity simply and make the excessive rigidifying of lathe, bed piece is become release that a rigid unitary have impact on vibrational energy.Compare in this, the utility model is optimized design to machine tool body structure, obtains the structure that Static stiffness is maximum under Moving Load; To the optimal design of lathe bed internal stiffeners plate structure and size, obtain the structure that the natural frequency of vibration is maximum; Meanwhile, to the fabrication hole distribution optimization design strengthened on gusset, while weight reduction, the rigidity of structure is ensured; Thus ensure that machining center meets high cutting speed, high feed speed and high manufacturing accuracy requirement.
Embodiment 2
The compound bed piece of one of the present embodiment, basic structure is substantially the same manner as Example 1, and difference is: the centre of described lathe bed body upper side wall is 3 ° with the angle of horizontal plane in the longitudinal direction; Described bearing diagonal plate 1 is 50 ° with the angle of horizontal plane; The height of described abdomen gusset 2 is 2.5 times of lathe bed body upper side wall thickness; Described lateral partitions 3 has 4, and the distance between adjacent two lateral partitions 3 is equal.
Embodiment 3
The compound bed piece of one of the present embodiment, basic structure is substantially the same manner as Example 1, and difference is: the centre of described lathe bed body upper side wall is 5 ° with the angle of horizontal plane in the longitudinal direction; Described bearing diagonal plate 1 is 60 ° with the angle of horizontal plane; The height of described abdomen gusset 2 is 3 times of lathe bed body upper side wall thickness; Described lateral partitions 3 has 6, and the distance between adjacent two lateral partitions 3 is equal.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (9)
1. a compound bed piece, comprise lathe bed body, it is the cavity of rectangle that described lathe bed body interior hollow forms cross section, lathe bed body comprises front-rear side walls, left and right sidewall, upper side wall and lower wall, it is characterized in that: also comprise two bearing diagonal plates (1), abdomen gusset (2) and lateral partitions (3), two described bearing diagonal plates (1) are positioned at the cavity of lathe bed body, one end of two bearing diagonal plates (1) is connected with the both sides of upper side wall respectively, the other end of two bearing diagonal plates (1) all with in the middle of lower wall is connected, two bearing diagonal plates (1) form " V " character form structure, described lateral partitions (3) is arranged between two bearing diagonal plates (1), the shape that the profile of lateral partitions (3) surrounds with upper side wall and lower wall for two bearing diagonal plates (1), described abdomen gusset (2) is string configuration, and abdomen gusset (2) is arranged on the centre of upper side wall medial surface along its length, and abdomen gusset (2) and lateral partitions (3) form criss-cross construction.
2. the compound bed piece of one according to claim 1, is characterized in that: described lateral partitions (3) has multiple, and multiple lateral partitions parallels between (3) between two.
3. the compound bed piece of one according to claim 2, is characterized in that: described lateral partitions (3) has 2-6, and the distance between adjacent two lateral partitions (3) is equal.
4. the compound bed piece of one according to claim 3, is characterized in that: described lateral partitions (3) has 4.
5. the compound bed piece of one according to claim 1, it is characterized in that: the left and right sidewall of described lathe bed body, lower wall, lateral partitions (3), bearing diagonal plate (1) between left and right sidewall and lateral partitions (3) and between two lateral partitions (3) are equipped with manhole, and this manhole is fabrication hole (4).
6. the compound bed piece of one according to claim 5, is characterized in that: the center of the fabrication hole (4) in the left and right sidewall of described lathe bed body, bearing diagonal plate (1) and lateral partitions (3) is in same level.
7. the compound bed piece of one according to claim 1, is characterized in that: described bearing diagonal plate (1) is 45 °-60 ° with the angle of horizontal plane.
8. the compound bed piece of one according to claim 1, is characterized in that: the centre of described lathe bed body upper side wall is 1 °-5 ° with the angle of horizontal plane in the longitudinal direction.
9. the compound bed piece of one according to claim 1, it is characterized in that: the height of described abdomen gusset (2) is 2-3 times of lathe bed body upper side wall thickness, and the thickness of abdomen gusset (2) is 0.8 times of lathe bed body upper side wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848887.XU CN205057521U (en) | 2015-10-29 | 2015-10-29 | Compound lathe lathe bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848887.XU CN205057521U (en) | 2015-10-29 | 2015-10-29 | Compound lathe lathe bed |
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| CN205057521U true CN205057521U (en) | 2016-03-02 |
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| CN201520848887.XU Active CN205057521U (en) | 2015-10-29 | 2015-10-29 | Compound lathe lathe bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817901A (en) * | 2016-05-28 | 2016-08-03 | 蚌埠精科机床制造有限公司 | Lightweight machine tool base with multilayer structure |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817901A (en) * | 2016-05-28 | 2016-08-03 | 蚌埠精科机床制造有限公司 | Lightweight machine tool base with multilayer structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210602 Address after: 210000 building C17, No.9 Kechuang Avenue, Zhongshan Science Park, Liuhe District, Nanjing City, Jiangsu Province Patentee after: JIANGSU YUANLI AVIA PRECISION MACHINE TOOL Co.,Ltd. Address before: 210002 block Hi, 9th floor, Jinling yujingyuan, 333 Taiping South Road, Nanjing, Jiangsu Province Patentee before: JIANGSU YUANLI NUMERICAL CONTROL MACHINE TOOL Co.,Ltd. |