CN203431117U - Anti-backlash reduction gearbox for nut strip - Google Patents
Anti-backlash reduction gearbox for nut strip Download PDFInfo
- Publication number
- CN203431117U CN203431117U CN201320460597.9U CN201320460597U CN203431117U CN 203431117 U CN203431117 U CN 203431117U CN 201320460597 U CN201320460597 U CN 201320460597U CN 203431117 U CN203431117 U CN 203431117U
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- CN
- China
- Prior art keywords
- nut strip
- worm screw
- shaft
- worm
- gear
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an anti-backlash reduction gearbox for a nut strip. The anti-backlash reduction gearbox comprises a reduction gearbox body, wherein the nut strip is arranged at the outer part of the reduction gearbox; a transmission shaft, a middle shaft and a main shaft are arranged in the interior of the reduction gearbox side by side; the main shaft is provided with two worms side by side, namely a left worm and a right worm; the left worm and the right worm are respectively meshed with the nut strip, so that the rotation motion of the left worm and the right worm is converted into the rectilinear motion of the nut strip. When the left worm moves rightwards, all the backlashes between the left worm and the nut strip are integrated on the left side, so that the backlashes of the right side of the nut strip are eliminated; when the right worm moves leftwards, all the backlashes between the right worm and the nut strip are integrated on the right side, so that the backlashes of the left side of the nut strip are eliminated; therefore the right worm is under stress when the right worm moves leftwards, and the left worm is under stress when the left worm moves rightwards, so that the left and right backlashes are eliminated; while the cost is not increased, the error caused by the transmission of a machine tool is effectively eliminated, the transmission precision is improved, and the machining precision is also greatly improved.
Description
Technical field
The utility model relates to a kind of machining equipment transmission part, and especially a kind of nut strip that is applicable to the X-axis such as gantry mill, single armed milling, facing cut gap speed reducer that disappears, for eliminating backlass.
Background technique
As universal equipment, generally there is not backlash eliminating equipment in gantry mill, single armed milling, facing cut etc., backlass is larger, and numerical control device adopts backlash eliminating equipment more, but most gap device complex structure, precision is higher, and manufacture cost is very high.It is upper that the gap that considers gantry mill is mainly present in the end final stage engagement of transmission, because front what engagement is in manufacturing or all fine assurances on assembling is adjusted, and final stage engagement is adjusted and measures difficulty, and wearing and tearing are more serious.
Model utility content
The nut strip that problem to be solved in the utility model is a kind of gap that can eliminate final stage, reduce reverse error, the improve transmission accuracy gap speed reducer that disappears.
In order to address the above problem, the utility model by the following technical solutions:
A kind of nut strip gap speed reducer that disappears, comprise deceleration box, the outside of deceleration box is provided with nut strip, in described deceleration box, be provided with side by side transmission shaft, jack shaft and main shaft, two worm screws are installed side by side: left worm screw and right worm screw on described main shaft, left worm screw and right worm screw mesh with nut strip respectively, rotatablely moving of left worm screw and right worm screw can be converted to the straight line motion of nut strip.
Below the further improvement of the utility model to above-mentioned division:
Between left worm screw and right worm screw, be provided with butterfly spring.
Further improve: described deceleration box is provided with the power input shaft being connected with transmission shaft driven, and described power input shaft and Power Drive Unit are in transmission connection.
Further improve: the first umbrella gear is installed, the second umbrella gear that driving gear is installed on described transmission shaft and is meshed with the first umbrella gear on power input shaft;
Spline gear is also installed on described main shaft, between described spline gear and driving gear, by driven gear, is in transmission connection, described driven gear is arranged on jack shaft.
Further improve: Power Drive Unit comprises the speed reducer being connected by the second shaft coupling transmission with power input shaft, on the power input shaft of described speed reducer, by the first shaft coupling transmission, is connected with variable-frequency motor.
During work, the power of power source variable-frequency motor is in transmission connection by speed reducer and power input shaft, the first umbrella gear on power input shaft connects, the first umbrella gear and the second umbrella gear are connected with a joggle, the second umbrella gear is coaxially connected on transmission shaft with driving gear, and driving gear and driven gear are connected with a joggle, and driven gear rotates at jack shaft, driven gear and spline gear are connected with a joggle, and spline gear is coaxially connected with main shaft by spline.
Left worm screw moves right the gap of left worm screw and nut strip is all concentrated on to left side, for the gap, right side of eliminating nut strip, right worm screw is moved to the left the gap of right worm screw and nut strip is all concentrated on to right side, for the gap, left side of eliminating nut strip, while being moved to the left like this, right worm screw is stressed, while moving right, left worm screw is stressed, realizes left and right and eliminates gap.When not increasing cost, effectively eliminated the error that lathe transmission produces, improve transmission accuracy, machining accuracy also increases substantially.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model embodiment's structural representation;
Accompanying drawing 2 is that A-A in accompanying drawing 1 is to sectional view;
Accompanying drawing 3 is the structure for amplifying schematic diagram of worm screw and nut strip in the utility model embodiment.
In figure: 1-variable-frequency motor; 2-the first coupling; 3-speed reducer; 4-the second coupling; 5-nut strip; 6-thrust ball bearing; 7-butterfly spring; 8-main shaft; The left worm screw of 9-; The right worm screw of 91-; 10-spline gear; 11-needle bearing; 12-driven gear; 13-jack shaft; 14-driving gear; 15-transmission shaft; 16-the second umbrella gear; 17-the first umbrella gear; 18-pto＝power take-off; 19-deceleration box.
Embodiment
Embodiment, as shown in Figure 1 and Figure 2, a kind of nut strip gap speed reducer that disappears, comprise deceleration box 19, in described deceleration box 19, be provided with side by side transmission shaft 15, jack shaft 13 and main shaft 8, two worm screws are installed on described main shaft 8 side by side: left worm screw 9 and right worm screw 91, be provided with butterfly spring 7 between left worm screw 9 and right worm screw 91; Assurance gap is stable, prevents oppositely locked.
The outside of described deceleration box 19 is provided with the nut strip 5 with left worm screw 9 and right worm screw 91 difference engagement driving; Nut strip 5 is fixed on worktable.
Described deceleration box 19 is provided with the power input shaft 18 being in transmission connection with transmission shaft 15, and described power input shaft 18 is in transmission connection with Power Drive Unit.
The first umbrella gear 17 is installed, the second umbrella gear 16 that driving gear 14 is installed on described transmission shaft 15 and is meshed with the first umbrella gear 17 on power input shaft 18;
Described main shaft 8 and two ends are rotationally connected with deceleration box 19 by thrust ball bearing 6 and needle bearing 11 respectively.Bearing capacity is large, operates steadily, and realizes high pulling torque, high rigidity.
On described main shaft 8, spline gear 10 is also installed, between described spline gear 10 and driving gear 14, by driven gear 12, is in transmission connection, described driven gear 12 is arranged on jack shaft 13.
Power Drive Unit comprises the speed reducer 3 being in transmission connection by the second coupling 4 with power input shaft 18, on the power input shaft of described speed reducer 3, by the first coupling 2, is connected with variable-frequency motor 1.
The power of power source variable-frequency motor 1 is in transmission connection by speed reducer 3 and power input shaft 18, the first umbrella gear 17 on power input shaft 18 connects, the first umbrella gear 17 and the second umbrella gear 16 are connected with a joggle, the second umbrella gear 16 is coaxially connected on transmission shaft 15 with driving gear 14, driving gear 14 is connected with a joggle with driven gear 12, driven gear 12 rotates at jack shaft 13, and driven gear 12 is connected with a joggle with spline gear 10, and spline gear 10 is coaxially connected with main shaft 8 by spline.
As shown in Figure 3, left worm screw 9 moves right left worm screw 9 and the gap of nut strip 5 is all concentrated on to left side t1, for the gap, right side of eliminating nut strip 5, right worm screw 9 is moved to the left right worm screw 9 and the gap of nut strip 5 is all concentrated on to right side t2, for the gap, left side of eliminating nut strip 5, while being moved to the left like this, right worm screw 9 is stressed, and while moving right, left worm screw 9 is stressed, realizes left and right and eliminates gap.When not increasing cost, effectively eliminated the error that lathe transmission produces, improve transmission accuracy, machining accuracy also increases substantially.
Claims (5)
1. the nut strip gap speed reducer that disappears, comprises deceleration box (19), and the outside of deceleration box (19) is provided with nut strip (5), is provided with side by side transmission shaft (15), jack shaft (13) and main shaft (8) in described deceleration box (19), it is characterized in that:
Two worm screws are installed side by side: left worm screw (9) and right worm screw (91) on described main shaft (8), left worm screw (9) and right worm screw (91) mesh with nut strip (5) respectively, rotatablely moving of left worm screw (9) and right worm screw (91) can be converted to the straight line motion of nut strip (5).
2. a kind of nut strip according to claim 1 gap speed reducer that disappears, is characterized in that:
Between left worm screw (9) and right worm screw (91), be provided with butterfly spring (7).
3. a kind of nut strip according to claim 1 and 2 gap speed reducer that disappears, is characterized in that:
Described deceleration box (19) is provided with the power input shaft (18) being in transmission connection with transmission shaft (15), and described power input shaft (18) is in transmission connection with Power Drive Unit.
4. a kind of nut strip according to claim 3 gap speed reducer that disappears, is characterized in that:
The first umbrella gear (17) is installed, the second umbrella gear (16) that driving gear (14) is installed on described transmission shaft (15) and is meshed with the first umbrella gear (17) on power input shaft (18);
Spline gear (10) is also installed on described main shaft (8), between described spline gear (10) and driving gear (14), by driven gear (12), is in transmission connection, described driven gear (12) is arranged on jack shaft (13).
5. a kind of nut strip according to claim 4 gap speed reducer that disappears, is characterized in that:
Power Drive Unit comprises the speed reducer (3) being in transmission connection by the second coupling (4) with power input shaft (18), on the power input shaft of described speed reducer (3), by the first coupling (2), is connected with variable-frequency motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460597.9U CN203431117U (en) | 2013-07-31 | 2013-07-31 | Anti-backlash reduction gearbox for nut strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460597.9U CN203431117U (en) | 2013-07-31 | 2013-07-31 | Anti-backlash reduction gearbox for nut strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431117U true CN203431117U (en) | 2014-02-12 |
Family
ID=50060155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460597.9U Expired - Fee Related CN203431117U (en) | 2013-07-31 | 2013-07-31 | Anti-backlash reduction gearbox for nut strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423397A (en) * | 2013-07-31 | 2013-12-04 | 山东鲁重数控机床股份有限公司 | Reduction gearbox for eliminating intervals of nut strip |
-
2013
- 2013-07-31 CN CN201320460597.9U patent/CN203431117U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423397A (en) * | 2013-07-31 | 2013-12-04 | 山东鲁重数控机床股份有限公司 | Reduction gearbox for eliminating intervals of nut strip |
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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: 20140212 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |