CN204450038U - Ball-screw back-stop mechanism - Google Patents
Ball-screw back-stop mechanism Download PDFInfo
- Publication number
- CN204450038U CN204450038U CN201420852552.0U CN201420852552U CN204450038U CN 204450038 U CN204450038 U CN 204450038U CN 201420852552 U CN201420852552 U CN 201420852552U CN 204450038 U CN204450038 U CN 204450038U
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- ball
- screw
- reverse clamping
- stopper bearing
- clamping stopper
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Abstract
The utility model relates to ball-screw back-stop mechanism, it is characterized in that: comprise coupling band and reverse clamping stopper bearing, described reverse clamping stopper bearing is fixedly mounted in coupling band, and be jointly sleeved on ball-screw, coupling band and reverse clamping stopper bearing can move around along the axis direction of ball-screw; Described ball-screw is provided with two sections of working faces coordinated with reverse clamping stopper bearing, wherein one section is interference fit working face, and another section is matched in clearance working face; When described reverse clamping stopper bearing contacts with interference fit working face and coordinates, ball-screw only can one-directional rotation; When described reverse clamping stopper bearing contacts with matched in clearance working face and coordinates, ball-screw can freely rotate.The utility model prevents the wrong feeding of ball-screw by setting up a reverse clamping stopper bearing; have simple and reliable for structure, easy to operate advantage, effectively can overcome all kinds of serious consequences of manual operation error and generation; proterctive equipment, can be common to all kinds of ball screw framework.
Description
Technical field
The utility model relates to the ball-screw back-stop mechanism in a kind of Machine Tool Feeding System, belongs to mechanical transmission technical field.
Background technology
Concerning present machining manufacturing industry, the transmission efficiency of ball-screw is up to 85% ~ 98%, it is 2 ~ 4 times of common lead screw, adopt ball-screw to be improve feed system sensitivity, positioning precision and prevent one of the effective measures of creeping, thus extensively adopted by Digit Control Machine Tool and used equipment technological transformation.But because ball-screw self does not possess condition of self-locking, may make a mistake when manual operation error (as forget rotation direction, cuff tangles handwheel or other positions of health are touched) by mistake feeding, causes machine tool grinding head and workpiece bump against and damage.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art; there is provided the back-stop mechanism of the ball-screw in a kind of Machine Tool Feeding System, it is simple and reliable for structure, easy to operate; effectively can overcome all kinds of serious consequences of manual operation error and generation, proterctive equipment.
Technical scheme according to the utility model provides: ball-screw back-stop mechanism, it is characterized in that: comprise coupling band and reverse clamping stopper bearing, described reverse clamping stopper bearing is fixedly mounted in coupling band, and be jointly sleeved on ball-screw, coupling band and reverse clamping stopper bearing can move around along the axis direction of ball-screw; Described ball-screw is provided with two sections of working faces coordinated with reverse clamping stopper bearing, wherein one section is interference fit working face, and another section is matched in clearance working face; When described reverse clamping stopper bearing contacts with interference fit working face and coordinates, ball-screw only can one-directional rotation; When described reverse clamping stopper bearing contacts with matched in clearance working face and coordinates, ball-screw can freely rotate.
As further improvement of the utility model, between described reverse clamping stopper bearing and coupling band, injection moulding bonding mode is adopted to connect as one.
the utility model compared with prior art, has the following advantages:the utility model is applied on the ball-screw in Machine Tool Feeding System; the wrong feeding of ball-screw is prevented by setting up a reverse clamping stopper bearing; have simple and reliable for structure; easy to operate advantage; effectively can overcome all kinds of serious consequences of manual operation error and generation; proterctive equipment, can be common to all kinds of ball screw framework.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: the ball-screw back-stop mechanism in embodiment forms primarily of coupling band 2 and reverse clamping stopper bearing 3, described reverse clamping stopper bearing 3 is fixedly mounted in coupling band 2, and being jointly sleeved on ball-screw 1, coupling band 2 and reverse clamping stopper bearing 3 can move around along the axis direction of ball-screw 1; Described ball-screw 1 is provided with two sections of working faces coordinated with reverse clamping stopper bearing 3, wherein one section is interference fit working face 1a, and another section is matched in clearance working face 1b; When described reverse clamping stopper bearing 3 contacts with interference fit working face 1a and coordinates, ball-screw 1 only can one-directional rotation; When described reverse clamping stopper bearing 3 contacts with matched in clearance working face 1b and coordinates, ball-screw 1 can freely rotate.
In the utility model, described reverse clamping stopper bearing 3 is connected with adopting conventional means of the prior art between coupling band 2, preferably adopts injection moulding bonding mode to connect as one.
In actual installation application, described roller screw 1 is arranged in feed system, roller screw 1 is arranged in eccentric bushing 4 by bearings, driven gear installed by ball-screw 1, eccentric bushing 4 is provided with handle, carry out rotating eccentric sleeve 4 by handle, ball-screw 1 translation can be made, thus make the driven gear on ball-screw 1 engage with the driven wheel on drive unit or throw off; During engagement, drive unit drives ball-screw 1 to rotate, and realizes the front and back feed motion of feed system.
Described coupling band 2 is fixed on one and its device moved around along the axis direction of ball-screw 1 can be driven to connect, when reverse clamping stopper bearing 3 is in the position with matched in clearance working face 1b corresponding matching, ball-screw 1 can bidirectional rotation, feeding and exit all unrestricted; When reverse clamping stopper bearing 3 is in the position with interference fit working face 1a corresponding matching, ball-screw 1 only can rotate on exit axis, locked in direction of feed, this ensure that in process, the phenomenon that bistrique and workpiece are collided can not be produced due to the maloperation of workman, ensure that the security of processing.
Claims (2)
1. ball-screw back-stop mechanism, it is characterized in that: comprise coupling band (2) and reverse clamping stopper bearing (3), described reverse clamping stopper bearing (3) is fixedly mounted in coupling band (2), and being jointly sleeved on ball-screw (1), coupling band (2) and reverse clamping stopper bearing (3) can move around along the axis direction of ball-screw (1); Described ball-screw (1) is provided with two sections of working faces coordinated with reverse clamping stopper bearing (3), wherein one section is interference fit working face (1a), and another section is matched in clearance working face (1b); When described reverse clamping stopper bearing (3) contacts with interference fit working face (1a) and coordinates, ball-screw (1) only can one-directional rotation; When described reverse clamping stopper bearing (3) contacts with matched in clearance working face (1b) and coordinates, ball-screw (1) can freely rotate.
2. ball-screw back-stop mechanism as claimed in claim 1, is characterized in that: adopt injection moulding bonding mode to connect as one between described reverse clamping stopper bearing (3) and coupling band (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852552.0U CN204450038U (en) | 2014-12-29 | 2014-12-29 | Ball-screw back-stop mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852552.0U CN204450038U (en) | 2014-12-29 | 2014-12-29 | Ball-screw back-stop mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204450038U true CN204450038U (en) | 2015-07-08 |
Family
ID=53656983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420852552.0U Active CN204450038U (en) | 2014-12-29 | 2014-12-29 | Ball-screw back-stop mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204450038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493621A (en) * | 2014-12-29 | 2015-04-08 | 无锡华洋滚动轴承有限公司 | Ball screw reverse-stopping mechanism |
| CN108189905A (en) * | 2018-03-15 | 2018-06-22 | 无锡华洋滚动轴承有限公司 | A kind of resilient support bearing arrangement |
-
2014
- 2014-12-29 CN CN201420852552.0U patent/CN204450038U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493621A (en) * | 2014-12-29 | 2015-04-08 | 无锡华洋滚动轴承有限公司 | Ball screw reverse-stopping mechanism |
| CN108189905A (en) * | 2018-03-15 | 2018-06-22 | 无锡华洋滚动轴承有限公司 | A kind of resilient support bearing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |