Pencil alloy planing rod knife with blade replacing structure

Abstract

The utility model discloses a pencil alloy planing cutter with a blade changing structure, which comprises a cutter body and blades, the cutter body is cylindrical, a cutter shaft hole is arranged in the center of the cutter body, at least two blade mounting parts are arranged on the outer circular surface of the cutter body, and one blade is arranged on each blade mounting part; the blade mounting part comprises a blade mounting groove, a screw mounting groove, a blade pressing block, a screw mounting hole and a locking screw, the blade is arranged in the blade mounting groove, the screw mounting groove is formed in the front side of the blade mounting groove, the blade pressing block is arranged in the screw mounting groove, the screw mounting hole is formed in the lower portion of the blade mounting groove, and one end of the screw mounting hole extends to the screw mounting groove; the other end of the locking screw extends to the outer circle face of the cutter body, the locking screw penetrates through the screw installation hole and is matched with the screw hole of the blade pressing block, and the blade is locked and fixed through the blade pressing block. According to the pencil alloy planing cutter with the blade replacing structure, when one blade cannot be used, the blade can be replaced by a new blade to be continuously used, and the use cost of the cutter is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to timber cutting tools, especially a replaceable blade cutter for processing solid wood pencil shafts. BACKGROUND

[0002] Wooden pencil shafts are processed by a planing machine, a planing cutter is installed on the cutter shaft of the planing machine, and the profile of the processed material is completed by the two rows of planing cutters, a plurality of pencil shafts are processed at a time, and the pencil shafts have shapes such as a circle, a hexagon, a triangle, and an oblate circle.

[0003] The blade edge of the planing cutter is designed in a profiled manner, the edge has a row of tooth grooves similar to the profile size of the pencil shaft, and tooth tips are formed between the tooth groove openings.

[0004] Currently, users leave a very small distance between adjacent tooth grooves in order to save processing materials, the width of the tooth tip part is less than 1 mm, the tooth tip part is greatly consumed during blade processing, and the entire cutter needs to be discarded when a single blade cannot be used. SUMMARY

[0005] The utility model aims to provide a pencil alloy planing cutter with a replaceable blade structure, when one of the planing cutters cannot be used, the planing cutter can be replaced with a new blade, and the cutter can continue to be used.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A pencil alloy planing cutter with a replaceable blade structure includes a cutter body and a blade, the cutter body is cylindrical, the cutter body is provided with a cutter shaft hole in the center, the outer circular surface of the cutter body is provided with at least two blade mounting parts, and each blade mounting part is provided with one blade; the blade mounting part includes a blade mounting groove, a screw mounting groove, a blade pressing block, a screw mounting hole, and a locking screw, the blade is arranged in the blade mounting groove, the screw mounting groove is arranged on the front side of the blade mounting groove, the blade pressing block is arranged in the screw mounting groove, the screw mounting hole is arranged at the lower part of the blade mounting groove, one end of the screw mounting hole extends to the screw mounting groove, the other end extends to the outer circular surface of the cutter body, the locking screw passes through the screw mounting hole and cooperates with the screw hole of the blade pressing block, and the blade is locked and fixed by the blade pressing block.

[0008] Further, the bottom of the blade is provided with a screw groove corresponding to the screw mounting hole.

[0009] Further, the middle part of the blade is provided with a radial positioning groove, and the blade pressing block is provided with a positioning protrusion corresponding to the radial positioning groove.

[0010] Further, the lower side of the blade edge of the blade is provided with a grinding limiting groove.

[0011] Further, the blade and the pin hole are arranged on the rear side of the blade mounting groove of the cutter body, and the positioning pin is arranged in the pin hole.

[0012] Further, the screw mounting groove is provided with the chip removal groove on the front side.

[0013] Further, the blade is made of hard alloy.

[0014] Further, the cutter body is made of aluminum alloy.

[0015] Further, the number of the blade mounting parts is two, four or six. Beneficial effects

[0016] 1) When one of the blades cannot be used, the pencil alloy planing rod cutter with the blade replacement structure can be replaced with a new blade to continue to be used, without scrapping the whole cutter, so as to effectively reduce the use cost of the cutter.

[0017] 2) The product can replace the blades with different profiles on the same cutter body to meet the processing requirements, and only needs to replace the blades with different tooth shapes to process the pencil rods with different shapes.

[0018] 3) The cutter body made of aluminum alloy is more convenient for precision machining, the machining precision of each station is less than 0.02, the cutter body is light in weight, the motor power consumption can be reduced, and the use cost of the cutter is further reduced.

[0019] 4) Since the blade can be made of standard hard alloy blank, precision machining and batch machining are more convenient, and the radial runout of the blade after replacement is less than 0.02 mm. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the pencil alloy planing rod cutter with the blade replacement structure of the first embodiment.

[0021] Figure 2 It is a front view of the pencil alloy planing rod cutter with the blade replacement structure of the first embodiment.

[0022] Figure 3 It is a structure view of the cutter body of the first embodiment.

[0023] Figure 4 It is a schematic view of the cooperation between the locking screw and the blade pressing block.

[0024] Figure 5 It is an installation schematic view of the positioning pin.

[0025] Figure 6 It is a perspective view of the blade.

[0026] Figure 7 It is a front view of the blade.

[0027] Figure 8It is a side view of the blade.

[0028] Figure 9 It is a front view of the pencil alloy planer bar cutter with replaceable blade structure of example two.

[0029] Figure 10 It is a front view of the pencil alloy planer bar cutter with replaceable blade structure of example three.

[0030] In the figure: 1-cutter body; 2-blade; 3-blade shaft hole; 4-blade mounting groove; 5-screw mounting groove; 6-blade pressing block; 7-screw mounting hole; 8-locking screw; 9-positioning pin; 10-edge; 11-screw groove; 12-radial positioning groove; 13-grinding limiting groove; 14-pin hole; 15-chip removal groove. DETAILED DESCRIPTION

[0031] The utility model will be explained further in connection with the drawings. Example one

[0032] As Figure 1 and shown, the utility model discloses a pencil alloy planer bar cutter with replaceable blade structure, including cutter body 1 and blade 2. Cutter body 1 material is aluminum alloy, and cutter body 1 is cylindrical, and is provided with blade shaft hole 3 in the center, and the outer circumferential surface of cutter body 1 is provided with two blade mounting parts, and each blade mounting part is provided with one blade 2, and blade 2 material is hard alloy.

[0033] As Figures 2 to 4 shown, the blade mounting part includes blade mounting groove 4, screw mounting groove 5, blade pressing block 6, screw mounting hole 7 and locking screw 8, blade 2 is arranged in blade mounting groove 4, screw mounting groove 5 is arranged on the front side of blade mounting groove 4, blade pressing block 6 is arranged in screw mounting groove 5, screw mounting hole 7 is arranged in the lower part of blade mounting groove 4, one end of screw mounting hole 7 extends to screw mounting groove 5, the other end extends to the outer circumferential surface of cutter body 1, locking screw 8 passes through screw mounting hole 7 and cooperates with the screw hole of blade pressing block 6, and blade 2 is locked and fixed through blade pressing block 6.

[0034] As Figures 5 to 8 shown, the bottom of blade 2 is provided with screw groove 11 corresponding to screw mounting hole 7, so as to facilitate the installation of locking screw 8. The middle part of blade 2 is provided with radial positioning groove 12, and blade pressing block 6 is provided with positioning protrusion corresponding to radial positioning groove 1, after blade pressing block 6 locks and fixes blade 2, the radial positioning groove 12 of blade 2 and the positioning protrusion of blade pressing block 6 cooperate with each other, prevent blade 2 from producing deviation in the radial direction of cutter body 1, and the rear side of blade 2 and blade mounting groove 4 is provided with pin hole 14 on the cutter body 2, positioning pin 9 is inserted into pin hole 14, blade 2 and cutter body 1 are relatively fixed through positioning pin 9, prevent blade 2 from producing deviation in the axial direction of cutter body 1, so as to ensure the machining accuracy.

[0035] In addition, during the dressing of the blade 2, the cutting edge 10 will gradually move downward, the size and cutting angle of the blade 2 will change, in order to limit the grinding times of the blade 2 and ensure the consistency of the size and cutting angle of all the blades 2, a dressing limiting groove 13 is arranged at the lower side of the cutting edge 10 of the blade 2, when the cutting edge 10 of the blade 2 moves downward to the position of the dressing limiting groove 13 during dressing, a new blade 2 can be replaced.

[0036] As shown in Figure 3 A chip removal groove 15 is arranged at the front side of the screw mounting groove 5, the wood chips generated when the blade 2 cuts the workpiece can be smoothly discharged through the chip removal groove 15, preventing the accumulation of the wood chips in the screw mounting groove 5 and affecting the disassembly of the locking screw 8. Embodiment two

[0037] As shown in Figure 9 The difference between embodiment two and embodiment one is that the outer circumferential surface of the tool body 1 is provided with four blade mounting portions, and the four blade mounting portions are uniformly distributed along the outer circumferential surface of the tool body 1. Embodiment three

[0038] As shown in Figure 10 The difference between embodiment three and embodiment one is that the outer circumferential surface of the tool body 1 is provided with six blade mounting portions, and the six blade mounting portions are uniformly distributed along the outer circumferential surface of the tool body 1.

[0039] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A pencil alloy rod shaving cutter with replaceable blade, comprising a cutter body and a blade, the cutter body is cylindrical, a cutter shaft hole is arranged in the center of the cutter body, and an outer cylindrical surface of the cutter body is provided with at least two blade mounting portions, and one blade is arranged on each blade mounting portion; characterized in that: The blade mounting part comprises a blade mounting groove, a screw mounting groove, a blade pressing block, a screw mounting hole, and a locking screw, the blade is arranged in the blade mounting groove, the screw mounting groove is arranged at the front side of the blade mounting groove, the blade pressing block is arranged in the screw mounting groove, the screw mounting hole is arranged at the lower part of the blade mounting groove, one end of the screw mounting hole extends to the screw mounting groove, the other end extends to the outer cylindrical surface of the cutter body, the locking screw passes through the screw mounting hole and cooperates with the screw hole of the blade pressing block, and the blade is locked and fixed through the blade pressing block.

2. A pencil lead lap tool according to claim 1, wherein: The bottom of the blade is provided with a screw groove corresponding to the screw mounting hole.

3. The pencil lead lap tool according to claim 1, wherein: The middle part of the blade is provided with a radial positioning groove, and the blade pressing block is provided with a positioning protrusion corresponding to the radial positioning groove.

4. The pencil lead structure of claim 1, wherein: The lower side of the blade edge is provided with a grinding limiting groove.

5. The pencil lead lap tool according to claim 1, wherein: The blade and the rear side of the blade mounting groove of the cutter body are provided with a pin hole, and a positioning pin is inserted into the pin hole.

6. The pencil lead structure of claim 1, wherein: The front side of the screw mounting groove is provided with a chip removal groove.

7. The pencil lead structure of claim 1, wherein: The material of the blade is hard alloy.

8. The pencil lead structure of claim 1, wherein: The material of the cutter body is aluminum alloy.

9. The pencil lead structure of claim 1, wherein: The number of the blade mounting parts is two, four, or six.

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