CN210997709U

CN210997709U - Feeding mechanism of movable planer

Info

Publication number: CN210997709U
Application number: CN201921126038.8U
Authority: CN
Inventors: 陈洪贵; 谢光才
Original assignee: Sichuan Neijiang Hongqiang Machine Tool Co ltd
Current assignee: Sichuan Neijiang Hongqiang Machine Tool Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-07-14
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a feeding mechanism of a movable planer, which comprises a driving gear fixedly sleeved on a main shaft of the planer and a driven gear meshed with the driving gear; the driving wheel is coaxial with the driven gear; a ratchet wheel is fixedly sleeved on the feeding screw rod of the planer, and a pawl matched with the ratchet wheel is arranged on a driving rod eccentrically arranged on the driving wheel. The utility model discloses a principle is to drive the eccentric wheel through the main shaft and rotates, utilizes eccentric wheel drive pawl to stir the ratchet of fixing on feed screw to it feeds to drive the rotatory realization of feed screw.

Description

Feeding mechanism of movable planer

Technical Field

The utility model relates to a feeding mechanism of a movable planer.

Background

A planer is a machine tool that uses a planer tool to plane a surface, groove, or formed surface of a workpiece. The planer is to make the cutter and the workpiece produce relative linear reciprocating motion to reach the aim of planing the surface of the workpiece.

The feed motion of existing mobile planers is achieved by an overrunning clutch. The overrunning clutch is a basic component which appears along with the development of mechatronics products, and is an important part for power transmission and separation functions between a prime mover and a working machine or between a driving shaft and a driven shaft in the machine. It is a device with self-clutch function by using speed change of driving and driven parts or change of rotation direction. In actual use, however, the overrunning clutch is very easy to damage and generally needs to be replaced in less than half a year, so that the cost of a factory is greatly increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a feeding mechanism for a mobile planer, which utilizes a ratchet-pawl mechanism to replace an overrunning clutch for feeding.

For solving the above technical problem, the technical scheme of the utility model is that: a movable planer feeding mechanism comprises a driving gear fixedly sleeved on a planer main shaft and a driven gear meshed with the driving gear; the driving wheel is coaxial with the driven gear; a ratchet wheel is fixedly sleeved on the feeding screw rod of the planer, and a pawl matched with the ratchet wheel is arranged on a driving rod eccentrically arranged on the driving wheel. The utility model discloses a principle is to drive the eccentric wheel through the main shaft and rotates, utilizes eccentric wheel drive pawl to stir the ratchet of fixing on feed screw to it feeds to drive the rotatory realization of feed screw.

As an improvement, the device also comprises a swing rod, wherein one end of the swing rod is movably connected with the driving rod, and the other end of the swing rod is movably sleeved on the feed screw rod; the pawl is fixed on the swing rod.

As an improvement, the swing rod is movably sleeved on the feed screw through a swing rod sleeve, so that the installation is convenient.

Preferably, the device further comprises a pawl seat fixed on the swing rod, and the pawl can stretch and retract in the pawl seat; a spring for pawl return is also included. The pawl only allows the ratchet wheel to rotate in one direction, the pawl rotates after the driving rod drives the poking ratchet wheel to rotate for a certain angle, and the pawl is ejected out by the spring when the pawl shrinks and slides to the next tooth position to poke the next round during rotation.

As an improvement, a feed amount adjusting device provided on the drive lever is further included. The length of the driving rod is adjusted to adjust the movement range of the pawl, so that the angle of the pawl for shifting the ratchet wheel is adjusted to adjust the feeding amount.

Preferably, the feed amount adjusting means includes an adjusting screw; the driving rod is divided into an upper section and a lower section, and threads matched with the adjusting threaded sleeve are arranged at one ends of the upper section and the lower section adjacent to the driving rod.

As an improvement, locking nuts are arranged at two ends of the adjusting screw sleeve. Avoiding the looseness of the adjusting threaded sleeve.

The utility model discloses an useful part lies in: the feeding mechanism of the movable planer with the structure drives the eccentric wheel to rotate by utilizing the main shaft, so that the ratchet wheel and the pawl are driven to realize feeding motion. The feed motion and the main shaft are linked, so that the feed motion and the main shaft are better matched to work. In addition, the service life of the ratchet wheel pawl is greatly prolonged compared with that of an overrunning clutch, and the design life of the ratchet wheel pawl can reach ten years. And the manufacturing cost of the ratchet wheel and the pawl is far lower than that of the overrunning clutch, so that the use cost of the movable planer is obviously reduced, and the economic benefit of enterprises is improved.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is a side view of the utility model.

The labels in the figure are: the device comprises a main shaft 1, a driving gear 2, a driven gear 3, a driving wheel 4, a driving rod 5, an adjusting threaded sleeve 6, a locking nut 7, a feed screw 8, a ratchet wheel 9, a pawl 10, a spring 11, a swing rod 12, a pawl seat 13 and a track 14.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1, the present invention comprises a driving gear 2 fixedly sleeved on a main shaft 1 of a planer and a driven gear 3 engaged with the driving gear 2; the driving gear 4 is coaxial with the driven gear 3; a ratchet wheel 9 is fixedly sleeved on a feed screw 8 of the planer, and a pawl 10 matched with the ratchet wheel 9 is arranged on a driving rod 5 eccentrically installed on the driving wheel 4.

The device also comprises a swing rod 12, wherein one end of the swing rod 12 is movably connected with the driving rod 5, and the other end of the swing rod 12 is movably sleeved on the feed screw 8; the pawl 10 is fixed on a swing rod 12. The swing rod 12 is movably sleeved on the feed screw 8 through a swing rod sleeve, so that the installation is convenient. The device also comprises a pawl seat 13 fixed on the swing rod 12, and the pawl 10 can stretch out and draw back in the pawl seat 13; a spring 11 for return of the pawl 10 is also included.

And a feed amount adjusting means provided on the drive lever 5. The feed amount adjusting device comprises an adjusting screw sleeve 6; the driving rod 5 is divided into an upper section and a lower section, and threads matched with the adjusting threaded sleeve 6 are arranged at one adjacent ends of the upper section and the lower section of the driving rod. And locking nuts 7 are arranged at two ends of the adjusting screw sleeve 6. Avoiding the looseness of the adjusting threaded sleeve.

When the machine works, the main shaft 1 rotates to drive the driving gear 2, and the driven gear 3 meshed with the driving gear 2 also rotates along with the driving gear. The driving wheel 4 is coaxial with the driven gear 3 and therefore also rotates therewith. The driving rod 5 is eccentrically arranged on the driving wheel 4 and drives the swing rod 12 to do reciprocating motion. The pawl 10 fixed on the swing rod 12 is driven by the swing rod 12 to reciprocate, so that the ratchet wheel 9 is driven to rotate for a certain angle. The rotation of the ratchet wheel 9 also drives the feed screw 8 to rotate, thereby driving the ram to advance a certain distance on the track 14 to complete the feed. The pawl 10 drives the ratchet wheel 9 to rotate for a certain angle, then the ratchet wheel is driven by the swing rod 12 to move backwards away from the tooth position, and the pawl 10 contracts during movement. When the pawl 10 reaches the next tooth position, the pawl 10 is reset under the action of the spring 11, so that the next round of striking is performed.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. A kind of moving planer feed mechanism, characterized by: comprises a driving gear fixedly sleeved on a main shaft of the planer and a driven gear meshed with the driving gear; the driving wheel is coaxial with the driven gear; a ratchet wheel is fixedly sleeved on the feeding screw rod of the planer, and a pawl matched with the ratchet wheel is arranged on a driving rod eccentrically arranged on the driving wheel.

2. A mobile planer feed mechanism as claimed in claim 1, wherein: one end of the swing rod is movably connected with the driving rod, and the other end of the swing rod is movably sleeved on the feed screw rod; the pawl is fixed on the swing rod.

3. A mobile planer feed mechanism as claimed in claim 2, wherein: the swing rod is movably sleeved on the feed screw through a swing rod sleeve.

4. A mobile planer feed mechanism as claimed in claim 2, wherein: the device also comprises a pawl seat fixed on the swing rod, and the pawl can stretch out and draw back in the pawl seat; a spring for pawl return is also included.

5. A mobile planer feed mechanism as claimed in claim 1, wherein: the feed amount adjusting device is arranged on the driving rod.

6. A mobile planer feeding mechanism as claimed in claim 5, wherein: the feeding amount adjusting device comprises an adjusting threaded sleeve; the driving rod is divided into an upper section and a lower section, and threads matched with the adjusting threaded sleeve are arranged at one ends of the upper section and the lower section adjacent to the driving rod.

7. A mobile planer feeding mechanism as claimed in claim 6, wherein: and locking nuts are arranged at two ends of the adjusting threaded sleeve.