CN201588918U

CN201588918U - Clearance eliminating device

Info

Publication number: CN201588918U
Application number: CN201020109768XU
Authority: CN
Inventors: 罗群; 罗亮
Original assignee: ANHUI TONGXING TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: ANHUI TONGXING TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2010-02-02
Filing date: 2010-02-02
Publication date: 2010-09-22
Anticipated expiration: 2020-02-02

Abstract

The utility model belongs to the technical field of engraving machines, and particularly relates to a clearance eliminating device. A position adjusting mechanism for adjusting meshing positions of teeth on a gear is arranged on the side of a middle gear, the position adjusting mechanism and a rotary shaft driving the gear to rotate form rotational engagement. For engraving, the position adjusting mechanism is preliminarily operated and positions of the teeth of the gear are adjusted properly, and meshing between the gears or between the gear and a rack is guaranteed to be relatively tight, thereby guaranteeing precision of engraving processing, and increasing engraving quality and speed.

Description

Backlash eliminating equipment

Technical field

The utility model belongs to technical field of engraving, is specifically related to a kind of backlash eliminating equipment.

Background technique

Traditional engraving machine generally includes worktable and the portal frame that is erected on the worktable, and portal frame is provided with the Carving Machining head, and workpiece is fixed on the worktable during Carving Machining, and the direction that portal frame limits along worktable moves to realize painting the quarter of workpiece.Usually structure is that tooth bar is set on worktable, and gear and drive unit are set on two columns of portal frame, also promptly by pinion and rack portal frame is moved along the direction that worktable limits.Yet often there is the untight phenomenon of engagement in existing rack and pinion drive mechanism, and the machining accuracy to engraving produces harmful effect easily, demands urgently improving.

The model utility content

The purpose of this utility model provides a kind of backlash eliminating equipment, the machining accuracy that its simple structure and can guaranteeing is carved.

For achieving the above object, the utility model has adopted following technological scheme: a kind of backlash eliminating equipment, the side of gear is provided with the position adjusting mechanism of the engaging position of adjusting the tooth on the gear, and the rotating shaft formation of described position adjusting mechanism and actuation gear rotation is rotatably assorted.

During Carving Machining, prior operating position controlling mechanism is adjusted the position of the tooth of gear in place, guarantees between the gear or the engagement between the gear rack comparatively closely gets final product, thereby has guaranteed the precision of Carving Machining, has improved engraving quality and carving speed.

Description of drawings

Fig. 1 is the structural representation of engraving machine;

Fig. 2 is the left view of portal frame in the engraving machine;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the structural representation of eccentric bushing;

Fig. 5 is the right elevation of Fig. 4.

Embodiment

As shown in Figure 4, a kind of backlash eliminating equipment, the side of gear 10 are provided with the position adjusting mechanism of the engaging position of adjusting the tooth on the gear 10, and rotating shaft 20 formations of described position adjusting mechanism and actuation gear 10 rotations are rotatably assorted.

Be rotatably assorted because the rotating shaft 20 of position adjusting mechanism and actuation gear 10 rotations constitutes, therefore after the position adjustment of the tooth of gear 10 was in place, gear 10 can rotate in the position of position adjusting mechanism qualification.

Described position adjusting mechanism can adopt cam mechanism, and cam in the cam mechanism and rotating shaft 20 lean, and relies on the position of the stroke alteration rotating shaft 20 of cam.

As preferred version of the present utility model, described position adjusting mechanism comprises and is installed on the riser 30 and eccentric bushing 40 that rotated position is adjustable, rotating shaft 20 is passed the eccentric opening on the eccentric bushing 40 and is constituted with eccentric bushing 40 and is rotatably assorted, the medial axis of the medial axis of eccentric bushing 40 and rotating shaft 20 is parallel to each other and the position is different, as shown in Figure 1, 2.

As shown in Figure 1, described riser 30 also is the column of portal frame 80 both sides, and eccentric bushing 40 is fixedly installed on the riser 30, and eccentric bushing 40 rotates adjustable in its bearing simultaneously.Because the medial axis of the medial axis of eccentric bushing 40 and rotating shaft 20 is parallel to each other and the position is different, the medial axis that also is the gyration center of eccentric bushing 40 and rotating shaft 20 is not on the same line, then when eccentric bushing 40 rotates adjusting in its bearing, the invariant position of eccentric bushing 40, eccentric opening then rotates around the gyration center of eccentric bushing 40, pass the rotating shaft 20 of eccentric opening simultaneously also rotates around the gyration center of eccentric bushing 40 thereupon, rotating shaft 20 is the shift in position of driven gear 10 then, has finally realized adjusting the purpose of the engaging position of the tooth on the gear.

Further say, described riser 30 is provided with two, the inboard of two risers 30 is provided with lathe 60, be installed with the tooth bar 70 that is meshed with gear 10 on the lathe 60, the side of described eccentric bushing 40 is provided with driving gear set 50, driving gear set 50 drives riser 30 and moves along the direction that lathe 60 limits, and riser 30 drives eccentric bushing 40, rotating shaft 20 and gear 10 actions, shown in Fig. 1～3.

When engraving machine is worked, driving gear set 50 actions are so that the direction rotation that the gear in the driving gear set 50 limits along tooth bar 70, also promptly driving riser 30 moves along the direction that lathe 60 limits, because riser 30 also is installed with eccentric bushing 40, rotating shaft 20 and gear 10, so eccentric bushing 40, rotating shaft 20 and gear 10 move with riser simultaneously, because by the preceding method position between adjusting gear 10 and the tooth bar 70 effectively, and make the mesh degree between the two comparatively tight, therefore riser 30 is quite steady when operation, therefore guarantee the precision of Carving Machining, improved engraving quality and carving speed.

As preferred version of the present utility model, shown in Fig. 4,5, described eccentric bushing 40 is sleeve shape, and the outside of sleeve radially is provided with positioning plate 41 along it, and locating piece passes positioning plate 41 eccentric bushing 40 is fixed on the riser 30.

On riser 30, offer through hole during installation, and aforesaid through hole is passed in the sleeve part that makes eccentric bushing 40, positioning plate 41 and locating piece then make eccentric bushing 40 can be fixed on the through hole, this shows, sleeve and positioning plate 41 match and make eccentric bushing 40 be fixed on the riser 30.

Further, locating piece fixedly eccentric bushing 40 has multiple mode, adopt lasso and screw to match such as locating piece, lasso is fixed on the riser 30, and be set in the periphery of positioning plate 41, screw then passes lasso and being resisted against tightly on the positioning plate 41, makes eccentric bushing 40 not rotate thus and is fixed.When needs rotating eccentric sleeve 40, only need unclamp screw, rotating eccentric sleeve 40 is to correct position and fixing once more getting final product.

Need to prove that the said fixing scheme can be cancelled positioning plate 41, this moment, the end of eccentric bushing 40 need be stretched out in the outside of riser 30, and the end that lasso is set in eccentric bushing 40 in the time of fixedly gets final product.

As preferred version of the present utility model, described positioning plate 41 is the ring flat-plate shape, positioning plate 41 is provided with locating slot 42 uniformly along its circumferencial direction, locating piece passes locating slot 42 eccentric bushing 40 is fixed on the riser 30, this means of fixation is comparatively simple and fixing comparatively firm, shown in Fig. 4,5.

Locating slot 42 can be along the radially setting of positioning plate 41, and this moment, locating piece selected for use pin or screw all can.Locating slot 42 described in the utility model is the curved arc shape, the bending direction of curved arc is consistent with the sense of rotation of eccentric bushing 40, locating piece is selected screw for use, in the time of fixedly screw is passed locating slot 42 and stretches into riser 30, and make the end face of screw be pressed on locating slot 42 places to get final product.This structure can reduce the material consumption of positioning plate 41, reduces and makes cost of production, is easy to fixing and fixed simultaneously.

As preferred version of the present utility model, referring to Fig. 4, described eccentric bushing 40 be provided with rolling bearing 43 along its axial two end part, rotating shaft 20 is passed rolling bearing 43 and is constituted with eccentric bushing 40 and be rotatably assorted, this respective outer side edges is stable, reliable operation.

Further, as shown in Figure 2, described eccentric bushing 40, rotating shaft 20 and gear 10 constitute anti-backlash mechanism, anti-backlash mechanism is set to two, and the anti-backlash mechanism branch is located at the both sides of driving gear set 50, can further improve the mesh degree of gear rack, helps promoting the precision of Carving Machining.

Shown in Fig. 4,5, described eccentric bushing 40 all be covered with bearing cap 44 along the outside, its axial two ends, to guarantee the stable operation of rolling bearing, reduce the generation of fault.

Claims

1. backlash eliminating equipment is characterized in that: the side of gear (10) is provided with the position adjusting mechanism of the engaging position of adjusting the tooth on the gear (10), and rotating shaft (20) formation of described position adjusting mechanism and actuation gear (10) rotation is rotatably assorted.

2. backlash eliminating equipment according to claim 1, it is characterized in that: described position adjusting mechanism comprises that being installed in riser (30) goes up and the adjustable eccentric bushing (40) of rotated position, rotating shaft (20) is passed the eccentric opening on the eccentric bushing (40) and is constituted with eccentric bushing (40) and is rotatably assorted, and the medial axis of the medial axis of eccentric bushing (40) and rotating shaft (20) is parallel to each other and the position is different.

3. backlash eliminating equipment according to claim 2 is characterized in that: described eccentric bushing (40) is sleeve shape, and the outside of sleeve radially is provided with positioning plate (41) along it, and locating piece passes positioning plate (41) eccentric bushing (40) is fixed on the riser (30).

4. backlash eliminating equipment according to claim 2, it is characterized in that: described riser (30) is provided with two, the inboard of two risers (30) is provided with lathe (60), be installed with the tooth bar (70) that is meshed with gear (10) on the lathe (60), the side of described eccentric bushing (40) is provided with driving gear set (50), driving gear set (50) drives the direction motion that riser (30) limits along lathe (60), and riser (30) drives eccentric bushing (40), rotating shaft (20) and gear (10) action.

5. backlash eliminating equipment according to claim 3, it is characterized in that: described positioning plate (41) is the ring flat-plate shape, positioning plate (41) is provided with locating slot (42) uniformly along its circumferencial direction, and locating piece passes locating slot (42) eccentric bushing (40) is fixed on the riser (30).

6. backlash eliminating equipment according to claim 3 is characterized in that: described eccentric bushing (40) be provided with rolling bearing (43) along its axial two end part, rotating shaft (20) is passed rolling bearing (43) and eccentric bushing (40) and is constituted and be rotatably assorted.

7. backlash eliminating equipment according to claim 4 is characterized in that: described eccentric bushing (40), rotating shaft (20) and gear (10) constitute anti-backlash mechanism, and anti-backlash mechanism is set to two, and the anti-backlash mechanism branch is located at the both sides of driving gear set (50).

8. backlash eliminating equipment according to claim 5 is characterized in that: described locating slot (42) is the curved arc shape, and the bending direction of curved arc is consistent with the sense of rotation of eccentric bushing (40).

9. backlash eliminating equipment according to claim 6 is characterized in that: described eccentric bushing (40) all be covered with bearing cap (44) along the outside, its axial two ends.