CN201042819Y - Easy-to-replace improved structure of cutter set - Google Patents

Abstract

The utility model discloses an easy replacement improvement structure of cutter unit, which is designed for solving the problem that blades on the cutter unit are easy to replace. The cutter set is provided with a central shaft, a plurality of axial grooves which are arranged at equal intervals are arranged on the central shaft, a plurality of blades are sleeved in the axial grooves, a plurality of convex teeth corresponding to the axial grooves are arranged on the inner diameter of each blade, one end of the central shaft is connected through a spacer ring, the spacer ring is locked on the central shaft along the axial direction, the other end of the central shaft is locked through a screw cap, and the two ends of the central shaft are respectively connected through a bearing and then connected through a bearing seat; the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is larger than the outer diameter of the bearing, so that the blade can be replaced after the bearing seat and the nut are removed, and the bearing does not need to be removed; when the number of the blade points on the blade is less than the number of the protruding teeth, one blade can be placed in every other groove to form a spiral cutter. The utility model discloses the easy improvement structure of replacing of cutter unit can be applied to the wood cutter.

Description

Improved structure for easy replacement of tool sets

technical field

The utility model relates to an improved structure of a cutter set, in particular to an improved structure of a spiral cutter used for woodworking cutters to easily replace blades.

Background technique

At present, there are many kinds of helical cutters used in woodworking knives, from the most traditional long blades of equal length to the chute arranged on the central axis, to the improved number of short blades similar to the helical shape with equal intervals. It is all about saving materials, so that when the blade is damaged, the entire set of knives needs to be replaced at the same time. This is an inevitable result of long-term manufacturing experience. This is because the damage of the blade may only have one position, and the long blade needs to be replaced as a whole. Of course, in terms of cost It is more expensive than short blades, so it has evolved in technology.

There used to be a tool set in which blades were threaded axially on the central shaft one by one, but the blades only had a single slot corresponding to a single protrusion on the central shaft, thereby forming a spiral cutter. This kind of cutter is more convenient than the above-mentioned various blades in the replacement of the blade. However, after the cutter is assembled, the two ends of the central shaft need to be fixed with bearings and bearing seats respectively, so that the cutter can produce the proper cutting function. In addition, in order to improve the fixation of the tool set, generally a nut is used at both ends of the tool set to be screwed to the corresponding thread of the central axis, which produces an excellent positioning effect. However, it is always necessary to repair and replace some of the blades in the cutting tool set. At this time, the bearing and the bearing seat must be disassembled first, and then the nut is loosened, so that the blades can be taken out one by one for replacement. , There is an extra action to remove the bearing, and when it is put back, there is also an extra action, which will affect the production efficiency for some emergency maintenance.

Utility model content

The main purpose of the utility model is to provide an improved structure for easy replacement of the cutter set, which facilitates the replacement of blades on the cutter set.

In order to achieve the above purpose, the structure of the utility model is as follows: the tool set has a central axis, and several axial grooves arranged at equal intervals are arranged on the central axis, and several blades are inserted in the axial grooves, and the inner diameter of each blade is There are several protruding teeth corresponding to the axial grooves, one end of the central shaft is connected with a spacer ring, the spacer ring is locked on the central shaft along the axial direction, the other end of the central shaft is locked with a nut, and The two ends of the central shaft are respectively joined by a bearing and then joined by a bearing seat; the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is also larger than the outer diameter of the bearing.

In the utility model, the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is also larger than the outer diameter of the bearing. After removing the bearing seat and the nut, the blade can be easily replaced without removing the bearing.

Another object of the present invention is to provide an improved structure for easy replacement of the cutter set, which not only facilitates the replacement of the blades on the cutter set, but also facilitates the formation of a spiral cutter in the cutter set.

In order to achieve this purpose, the structure of the utility model is as follows: the tool set has a central axis, and several axial grooves arranged at equal intervals are arranged on the central axis, and several blades are inserted in the axial grooves, and the inner diameter of each blade is There are several protruding teeth corresponding to the axial grooves, the number of blades on the blade is less than the number of protruding teeth, one end of the central shaft is connected with a spacer ring, and the spacer ring is locked on the central shaft along the axial direction, and the other end of the central shaft One end is locked with a nut, and the two ends of the central shaft are respectively connected with a bearing and then connected with a bearing seat; the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is also larger than the outer diameter of the bearing.

Since the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is also larger than the outer diameter of the bearing, the blade can be easily replaced after removing the bearing seat and the nut without removing the bearing. The number of blades is less than the number of protruding teeth, and a blade can be placed in every other groove on the central axis. This blade is different from the common prefabricated structure of the slot hole position of each blade in a single group, but forms each blade. All the blades have the same appearance, and the adjustment effect can be achieved only by shifting the position during assembly, which is convenient for forming a spiral cutter.

Description of drawings

Fig. 1 is the front view of the present utility model (but bearing seat part at two ends of central shaft wherein is sectional view).

Fig. 2 is the front view of the central axis of the utility model.

Fig. 3 is a left view of the central axis of the utility model.

Fig. 4 is the right side view of the central axis of the utility model.

Fig. 5 is the right side view of the spacer ring of the utility model.

Fig. 6 is the front view of the nut of the present utility model.

Fig. 7 is the left side view of the nut of the present utility model.

Fig. 8 is a left view of the utility model blade.

Fig. 9 is a side view of the bearing housing of the present invention.

Fig. 10 is a half sectional view of the bearing seat of the present invention.

Fig. 11 is a top view of the bearing housing of the present invention.

Figure 12 is the front view of the utility model after the bearing seat is removed from Figure 1 (but the bearing seat part is a cross-sectional view).

Fig. 13 is the front view of Fig. 12 of the utility model after the nut is removed (but the bearing seat part is a cross-sectional view).

Detailed ways

The purpose, features and advantages of the present utility model will be described in depth and in detail below in conjunction with the accompanying drawings and preferred embodiments.

As shown in Figures 1 to 13, it is an easily replaceable and improved structure of a tool set of the present invention. The tool set has a central axis 1, and several equidistant The axial groove 11 that is set, is inserted with several blades 2 on the axial groove 11, and the inner diameter of each blade 2 (as shown in Figure 8) is provided with several protruding teeth 21 corresponding to the axial protruding strips. One end of the central axis 1 is connected with a spacer ring 12 that can be hexagonal (generally used standard is a hexagonal shape, and can be opened and closed with a wrench, but not limited to this shape), and the spacer ring 12 (as shown in Fig. 5) is axially locked to the central shaft 1. In the figure, the end face of the central shaft 1 is provided with four equally spaced fixed holes 18, and the spacer ring 12 is provided with four equidistant fish-eye-shaped holes in the middle. The perforation 19 is locked with a screw (not shown) between the fixed hole 18 and the perforation 19, so that the end face of the central shaft 1 with the spacer 12 becomes the non-detachable end, and vice versa, the other end becomes the detachable end The other end of the central shaft 1 is locked with a hexagonal nut 13, and the two ends of the central shaft 1 are respectively connected with a bearing 14, 15 and then connected with a bearing seat 16, 17; the bearing seat 16 , 17 as shown in Figures 9 to 11; the outer diameter of the bearing 15 is smaller than the inner diameter of the blade 2, and the inner diameter 10 of the nut 13 is also greater than the outer diameter of the bearing 15, so that the bearing seat 17 is removed (as shown in Figure 12) With the nut 13 (as shown in FIG. 13 ), the blade 2 can be replaced without removing the bearing 15 . Here it is the biggest improvement of the utility model.

In addition, as shown in Figure 9 and Figure 10, the upper half of the bearing housing 16, 17 in the figure is chamfered, that is to say, the bearing housing area is divided into upper and lower halves, and the two ends of the bearing housing of the two halves are Each of them is locked by a screw. When the left and right screws are loosened, the fixing of the two halves of the bearing seat can be loosened, and the bearing seat can be moved away from the bearing; however, as shown in Figure 10, it can be seen that Half of the bearing seat is locked on the machine table (not shown) by another bolt from the bottom up. Therefore, after loosening a pair of screws on the upper half of the bearing seat, the entire set of tools without the bearing seat can be moved. At the starting station, the process of replacing the blade is carried out, that is, the nut 13 is loosened and removed with a wrench, and then the blade is replaced.

When the number of blades 22 on the blade 2 is less than the number of protruding teeth 21, a blade 2 can be put into every other groove 11 to form a spiral cutter. Blade 2, but the number of protruding teeth 21 is twelve, that is to say, each blade has three protruding teeth that can correspond, which means that the blade can have three different angles that can be changed. If there is a change in the ratio, then its correspondence can be Variety.

To sum up the above-mentioned structure, the utility model utilizes the positioning of the expanded central shaft, so that one end is fixed, and the other end becomes the dismantling end for replacing the blade, so that the bearing seat and the nut whose inner diameter is larger than the outer diameter of the bearing are moved first. After opening, the blades whose inner diameter is larger than the outer diameter of the bearing can be removed one after another or reversed to form a tool set that is easy to disassemble. The key of the adjacent out-of-position adjustment is the improvement of this type of tool, as an easy-to-replace improvement method, so it can provide good usability and is designed for a mechanism that is completely different from the existing ones.

The above is a detailed description of the preferred embodiments of the present utility model, and is not intended to limit the present utility model. All scopes of the present utility model should be based on the scope of the appended claims, and the spirit of the scope of the patent and its similar changes The embodiments and approximate structures should all be included in the protection scope of the present utility model.

Claims (3)

1. An improved structure for easy replacement of a cutter set. The cutter set has a central shaft, and several axial grooves arranged at equal intervals are arranged on the central shaft, and several blades are inserted in the axial grooves. The inner diameter of each blade is There are several protruding teeth corresponding to the axial grooves, one end of the central shaft is connected with a spacer ring, the spacer ring is locked on the central shaft along the axial direction, the other end of the central shaft is locked with a nut, and The two ends of the central shaft are respectively connected by a bearing and then connected by a bearing seat; It is characterized in that the outer diameter of the bearing is smaller than the inner diameter of the blade, and the inner diameter of the nut is larger than the outer diameter of the bearing. 2. The easily replaceable improved structure of the cutter set according to claim 1, wherein the number of blades on each blade is less than the number of protruding teeth, and a blade is placed in every other groove to form a spiral cutter. 3. The easily replaceable and improved structure of the tool set as claimed in claim 1, wherein the bearing seat area is divided into upper and lower halves, and the two ends of the bearing seats of the two halves are each locked by a screw, and the lower half The bearing seat is locked on a machine platform from bottom to top by another bolt.

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