CN203030921U - Heavy-load large-pressing-force tailstock - Google Patents
Heavy-load large-pressing-force tailstock Download PDFInfo
- Publication number
- CN203030921U CN203030921U CN 201220646747 CN201220646747U CN203030921U CN 203030921 U CN203030921 U CN 203030921U CN 201220646747 CN201220646747 CN 201220646747 CN 201220646747 U CN201220646747 U CN 201220646747U CN 203030921 U CN203030921 U CN 203030921U
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- tailstock
- sleeve
- force
- bearing
- mandrel
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- Expired - Fee Related
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Abstract
The utility model relates to a heavy-load large-pressing-force tailstock comprising a tailstock body and a sleeve arranged in a process hole of the tailstock body. The tailstock is characterized in that a hydraulic oil cylinder piston and a mandrel are arranged in the sleeve, the mandrel is arranged in the sleeve through a cylindrical roller bearing, a one-way thrust ball bearing and an angular contact ball bearing, and an inner hole of the cylindrical roller bearing is a tapered hole. On the condition that the heavy-load large-pressing-force tailstock meets the requirements that a structure of a machine tool and appearance and the size of the tailstock are not changed, the sleeve is adopted as a hydraulic oil cylinder body and is fixed through a piston, and the sleeve is driven to stretch and retract. Meanwhile, the heavy-load large-pressing-force tailstock is characterized that the cylindrical roller bearing with the tapered hole serving as the inner hole is used for bearing radial force, the one-way thrust ball bearing which can only bear axial force is used for bearing large axial force, the angular contact ball bearing is adopted to support the long mandrel structure in an auxiliary mode, the sleeve and the mandrel are integrated, and therefore pressing force of the tailstock is doubled and requirements of part machining are met.
Description
Technical field:
The utility model belongs to lathe or need hold out against the plant equipment of thrust greatly, particularly relates to the big pressure tailstock of a kind of heavy duty.
Background technology:
The big pressure tailstock of heavy duty is to transport in the industry in order to satisfy railway traffic, and the requirement of certain turning processing technology of train axle designs.It is the frictional force transferring power of using friction plate that its processing technology requires, and offsets the Cutting Force in the turning processing, and this just need make the normal pressure of frictional force of the pressure of tailstock.The tailstock of general structure holds out against its working pressure at 0.5-1.5MPa, and the pressure maximum of tailstock is at 25 00kg.Because the draw ratio of train axle own is big, weight is heavier generally to be 500 kg, and uses the tailstock of general structure can't reach the pressure that medium-term and long-term 10 000kg are processed in turning.Solution has and increases the hydraulic cylinder area, but because of the needs of machine tool structure and processing, can't realize increasing the hydraulic cylinder area; When pressure is increased to 4 required MPa, can satisfy use, but traditional tailstock spindle bearing structure middle (center) bearing axial force is not enough, damages easily.Therefore need the constant special heavy big pressure tailstock structure of appearance and size to solve this problem.
Summary of the invention:
The purpose of this utility model is in the machine tool structure restriction and satisfies under the prerequisite of the needs of processing, do not change under the situation of sleeve configuration size, provide a kind of larger axis that bears to pressure, prevent the tailstock damage of bearings, guarantee to produce and normally carry out, the big pressure tailstock of the heavy duty of enhancing productivity.
The technical scheme of taking for achieving the above object is:
The big pressure tailstock of a kind of heavy duty, comprise tailstock body and be installed in the interior sleeve of tailstock body fabrication hole, it is characterized in that: hydraulic cylinder piston and mandrel are installed in the described sleeve, and wherein mandrel is that cylinder roller bearing, single direction thrust ball bearing and the angular contact ball bearing of conical bore is installed in the sleeve by endoporus.
Be provided with the adjusting pad that to adjust pretightning force and radial accuracy and locking nut radially between described cylinder roller bearing and the sleeve.
Above-mentioned sleeve constitutes hydraulic jack as cylinder body and hydraulic cylinder piston, and hydraulic cylinder piston is fixed on the tailstock body.
The big pressure tailstock of heavy duty of the present utility model is satisfying under the constant situation of machine tool structure and tailstock appearance and size, adopting sleeve is the hydraulic jack cylinder body, piston is fixed, impel sleeve to do the reduction campaign, the adoption of innovation endoporus is conical bore cylinder roller bearing bearing radial force simultaneously, adopt the thrust ball bearing that only bears axial force to bear big axial force, adopt the structure of the long mandrel of angular contact ball bearing supplemental support, sleeve and mandrel are integrated, thereby the tailstock pressure is increased exponentially, satisfy the needs of part processing.
In axletree turning processing, when radial load acts on the mandrel, there is Biserial cylindrical roller bearing to bear, and can bears big radial load, satisfy instructions for use fully.When responsive to axial force is on mandrel, there is thrust ball bearing to bear, and can bears the pressure of 10 000kg for a long time.
Through evidence, it is identical with expection that the present invention innovates effect, and reliable and stable.
Description of drawings:
Fig. 1 is the structural representation sketch of the big pressure tailstock of the utility model heavy duty;
Fig. 2 is the stressed sketch of the big pressure tailstock of the utility model heavy duty.
The specific embodiment:
The big pressure tailstock of the utility model heavy duty as shown in Figure 1, comprises tailstock body 1, and sleeve 2 is installed in the fabrication hole of described tailstock body 1, and hydraulic cylinder piston 3 and mandrel 5 are installed in the described sleeve 2.Described mandrel 5 is from being that Biserial cylindrical roller bearing 8, single direction thrust ball bearing 6 and the angular contact ball bearing 4 of conical bore is installed in the sleeve 2 by endoporus successively outside to inside.Wherein endoporus be conical bore Biserial cylindrical roller bearing 8 can by adjusting pad 9 and radially locking nut 7 adjust pretightning force and radial accuracy, and bearing radial force; Single direction thrust ball bearing 6 bears axial force.Sleeve 2 is again to be subjected to force support as cylinder body simultaneously.Hydraulic cylinder piston 3 is fixed on the tailstock body 1 by ring flange 10, and in the time of in hydraulic oil feeds sleeve 2 oil cylinders, hydraulic cylinder piston 3 stretches in tailstock body 1 sleeve 2, and namely sleeve 2 stretches in tailstock body 1 as cylinder body.
The big pressure tailstock of heavy duty of the present utility model, when stressed, it is that Biserial cylindrical roller bearing 8 and the single direction thrust ball bearing 6 of conical bore goes to bear that axial force and radial load have brearing bore independently respectively, and bearing capacity is much larger than traditional structure, simultaneously, bearing temperature rise and rotating speed satisfy instructions for use.Stressing conditions as shown in Figure 2.
Claims (3)
1. big pressure tailstock of heavy duty, comprise tailstock body (1) and be installed in the interior sleeve (2) of tailstock body (1) fabrication hole, it is characterized in that: hydraulic cylinder piston (3) and mandrel (5) are installed in the described sleeve (2), and wherein mandrel (5) is that cylinder roller bearing (8), single direction thrust ball bearing (6) and the angular contact ball bearing (4) of conical bore is installed in the sleeve (2) by endoporus.
2. according to the big pressure tailstock of the described heavy duty of claim 1, it is characterized in that: be provided with the adjusting pad (9) that to adjust pretightning force and radial accuracy and locking nut (7) radially between described cylinder roller bearing (8) and the sleeve (2).
3. according to the big pressure tailstock of the described heavy duty of claim 1, it is characterized in that: above-mentioned sleeve (2) constitutes hydraulic jack as cylinder body and hydraulic cylinder piston (3), and hydraulic cylinder piston (3) is fixed on the tailstock body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646747 CN203030921U (en) | 2012-11-30 | 2012-11-30 | Heavy-load large-pressing-force tailstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646747 CN203030921U (en) | 2012-11-30 | 2012-11-30 | Heavy-load large-pressing-force tailstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203030921U true CN203030921U (en) | 2013-07-03 |
Family
ID=48683062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646747 Expired - Fee Related CN203030921U (en) | 2012-11-30 | 2012-11-30 | Heavy-load large-pressing-force tailstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203030921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990096A (en) * | 2012-11-30 | 2013-03-27 | 宁夏新瑞长城机床有限公司 | Heavy-load tailstock with large tightly-jacking force |
-
2012
- 2012-11-30 CN CN 201220646747 patent/CN203030921U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990096A (en) * | 2012-11-30 | 2013-03-27 | 宁夏新瑞长城机床有限公司 | Heavy-load tailstock with large tightly-jacking 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20161130 |