CN201922304U - Ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines - Google Patents
Ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines Download PDFInfo
- Publication number
- CN201922304U CN201922304U CN2010206404646U CN201020640464U CN201922304U CN 201922304 U CN201922304 U CN 201922304U CN 2010206404646 U CN2010206404646 U CN 2010206404646U CN 201020640464 U CN201020640464 U CN 201020640464U CN 201922304 U CN201922304 U CN 201922304U
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- ram
- gravity center
- floor type
- type boring
- supporting mechanism
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Abstract
The utility model relates to a ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines, which comprises a headstock (1), and a ram (2) which is horizontally extended out is arranged on the headstock (1). The ram gravity center supporting mechanism is characterized in that: two oil chambers (3) are respectively arranged at both sides of the gravity center of the bottom of the ram (2), a piston (4) is arranged in each oil chamber (3), the two pistons (4) are respectively mounted on a linear bearing (5), the two linear bearings (5) are respectively matched with a guide way plate (10) of the headstock (1) in a sliding manner, and the tops of the oil chambers (3) are respectively provided with an oil hole (7) which is communicated with the corresponding oil chamber (3). The ram gravity center supporting mechanism has the advantages that: the ram gravity center supporting mechanism has a good hydraulic compensation effect for the gravity center of the ram and stable performance, and not only can the static ram be compensated, but also the moving ram can be compensated, thus the weight of the ram is balanced and the extended ram is inhibited from tilting forward.
Description
Technical field
The utility model relates to a kind of numerical control floor type boring and milling machine, especially the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine.
Background technology
Numerical control floor type boring and milling machine is in order to prevent the deterioration of ram running precision, usually adopt main spindle box position of centre of gravity hydraulic compensating device, main spindle box position of centre of gravity compensating for variations essence is the balance of moment, the position that ram stretches out (or after loading onto annex) main spindle box center of gravity must move forward, produce an additional moment, cause the change of main spindle box center of gravity, the main spindle box stressed increase of hoist cable of going forward, steel wire rope tension elongation causes main spindle box both main spindle box bowing phenomenas that tilts, in order to make on its guiding rail that does not act on column and main spindle box, other produces a direction and stretches out the trimming moment that (retraction) changes with ram on the contrary, the variation of steel wire rope tension is depended in the variation of this moment, this tension force is by the oil pressure decision of balancing cylinder, when compensation arrangement hoist cable oil cylinder injection pressure oil forward, the elongation of hoist cable makes main spindle box get back to level and guarantees machine tool accuracy with this before the compensation.
But main spindle box position of centre of gravity compensation hydraulic has only solved the problem that main spindle box tilts, and stretches out or loads onto behind the annex balance (promptly leaning forward) of ram self and can not fundamentally eliminate for ram.
The utility model content
The purpose of this utility model is exactly the defective that leans forward for the ram self that overcomes existing numerical control floor type boring and milling machine, and a kind of ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine is provided.
The technical scheme that its technical problem that solves the utility model adopts is:
The ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine, comprise main spindle box, but main spindle box is provided with the ram that level is stretched out, it is characterized in that: be respectively equipped with an oil pocket in position of centre of gravity both sides, ram bottom, be provided with a piston in each oil pocket, each piston is installed in respectively on the linear bearing, each linear bearing respectively with main spindle box on the guide rail plate be slidingly matched, be respectively equipped with an oilhole at each oil pocket top and communicate with corresponding oil pocket.
On the basis of above-mentioned main technical schemes, can increase following further perfect technical scheme:
The position of each piston and oil pocket inwall corresponding matching is respectively equipped with sealing ring.
Be respectively equipped with pilot hole at each oil pocket top, be provided with the lead that matches at the piston end of each pilot hole correspondence.
Port between two oil pockets is provided with a baffle plate and cooperates with two pistons.
Be provided with an oil connection in each oilhole.
The beneficial effects of the utility model are effective, the stable performances of this device ram position of centre of gravity compensation hydraulic, not only can compensate in the inactive state of ram, and the weight of ram that under the ram movement state, also can compensate balance, controlled the phenomenon that leans forward after ram stretches out.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings:
Fig. 1 is a front view of the present utility model;
Fig. 2 is the partial view A of front view of the present utility model.
The specific embodiment
As shown in Figure 1; the ram center of gravity bracing or strutting arrangement of the utility model numerical control floor type boring and milling machine; comprise main spindle box 1; main spindle box 1 vertically is provided with; main spindle box 1 is provided with the ram 2 that a level is stretched out; as shown in Figure 2; be respectively equipped with an oil pocket 3 in position of centre of gravity both sides, ram 2 bottom; oil pocket 3 is the inverted U-shaped oil pocket; be respectively equipped with an oilhole 7 communicates with corresponding oil pocket 3 at each oil pocket 3 top; be provided with an oil connection in each oilhole 7; be provided with a piston 4 in each oil pocket 3; each piston 4 is respectively equipped with a sealing ring 8 with the position of oil pocket 3 inwall corresponding matching; sealing ring 8 is embedded in the groove on the piston 4 and is slidingly matched with oil pocket 3 inwalls; be respectively equipped with pilot hole at each oil pocket 3 top; piston end in each pilot hole correspondence is provided with the lead 6 that matches; lead 6 is installed in the pin-and-hole of piston end; and be slidingly matched with pilot hole; prevent the crooked of piston 4; each piston 4 is installed in respectively on the linear bearing 5; the mating surface of piston 4 and linear bearing 5 is greater than the mating surface of linear bearing 5; make piston 4 on linear bearing, form convex shoulder; be provided with a baffle plate 9 cooperates with the convex shoulder of two pistons 4 in the port of 3 of two oil pockets; prevent coming off of piston 4; each linear bearing 5 respectively with main spindle box 1 on guide rail plate 10 be slidingly matched; move downward by promoting piston to oil pocket 3 oilings; press to guide rail plate 10 formation reaction forces by linear bearing 5 and play support ram 2; linear bearing 5 is in order to reduce the frictional force in ram 2 rectilinear motions under pressure state; guarantee that with this middle in working order ram 2 of lathe is in balance all the time, has improved machine tool motion precision and machining accuracy.
Claims (5)
1. the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine, comprise main spindle box (1), main spindle box (1) but ram (2) that the level that is provided with is stretched out, it is characterized in that: be respectively equipped with an oil pocket (3) in position of centre of gravity both sides, ram (2) bottom, be provided with a piston (4) in each oil pocket (3), each piston (4) is installed in respectively on the linear bearing (5), each linear bearing (5) is slidingly matched with the guide rail plate (10) of main spindle box (1) respectively, is respectively equipped with an oilhole (7) at each oil pocket (3) top and communicates with corresponding oil pocket (3).
2. the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine according to claim 1 is characterized in that: each piston (4) is respectively equipped with sealing ring (8) with the position of oil pocket (3) inwall corresponding matching.
3. the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine according to claim 1 is characterized in that: be respectively equipped with pilot hole at each oil pocket (3) top, be provided with the lead (6) that matches at the piston end of each pilot hole correspondence.
4. the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine according to claim 1, it is characterized in that: the port between two oil pockets (3) is provided with a baffle plate (9) and cooperates with two pistons (4).
5. the ram center of gravity bracing or strutting arrangement of numerical control floor type boring and milling machine according to claim 1 is characterized in that: be provided with an oil connection in each oilhole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206404646U CN201922304U (en) | 2010-12-03 | 2010-12-03 | Ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206404646U CN201922304U (en) | 2010-12-03 | 2010-12-03 | Ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201922304U true CN201922304U (en) | 2011-08-10 |
Family
ID=44426173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206404646U Expired - Fee Related CN201922304U (en) | 2010-12-03 | 2010-12-03 | Ram gravity center supporting mechanism for numerically controlled floor type boring and milling machines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201922304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091964A (en) * | 2010-12-06 | 2011-06-15 | 安徽国瑞特重型数控机床制造有限公司 | Gravity center supporting device for ram of numerically-controlled floor boring and milling machine |
| CZ305335B6 (en) * | 2014-01-10 | 2015-08-05 | Ĺ KODA MACHINE TOOL, a. s. | Device for transfer of supporting force |
-
2010
- 2010-12-03 CN CN2010206404646U patent/CN201922304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091964A (en) * | 2010-12-06 | 2011-06-15 | 安徽国瑞特重型数控机床制造有限公司 | Gravity center supporting device for ram of numerically-controlled floor boring and milling machine |
| CZ305335B6 (en) * | 2014-01-10 | 2015-08-05 | Ĺ KODA MACHINE TOOL, a. s. | Device for transfer of supporting force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |