CN217253336U - Multistage shaping reamer of processing car valve barrel - Google Patents

Abstract

The utility model discloses a multistage shaping reamer of processing car valve barrel, including the handle of a knife, the one end fixedly connected with of handle of a knife is along the coaxial blade that rotates of handle of a knife, the outer wall of blade is provided with four cutting edges lamella, four cutting edges lamella extend to the blade tip along the axial spiral of handle of a knife respectively and intersect with the center of blade tip and form the tool bit, be equipped with the chip groove between each cutting edge lamella respectively; the utility model relates to a reamer technical field. This multistage shaping reamer of processing car valve barrel processes through first cutting face, second cutting face in order, has reduced the resistance in the blade course of working like this to the work piece roughness that the cutting was come out is higher, sets up the dashpot that sets up simultaneously, makes the reamer offset at the in-process atress of processing, has strengthened the cutting strength of blade, has promoted the cutter life-span, discharges the sweeps high-efficient fast to the chip groove in simultaneously, makes the cutting stably go on.

Description

Multistage shaping reamer of processing car valve barrel

Technical Field

The utility model relates to a reamer technical field specifically is a multistage shaping reamer of processing car valve barrel.

Background

The automobile valve sleeve needs to be matched with the valve core for use, the service life of the automobile valve sleeve and the service life of the valve core are directly influenced by the matching degree, and the automobile valve sleeve has the following characteristics: 1. a plurality of sections of forming steps are arranged; 2. the requirement on the roughness in the hole is high; 3. the concentricity requirement is strict;

at present, when an automobile valve sleeve is machined, a forming reamer is easy to twist off in the using process, in the cutting process, the influence of scraps on the machining precision is large, machined screw threads are rough, burrs are large, the reamer is fast in abrasion, the screw precision is difficult to guarantee, the machining speed is low, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a multistage shaping reamer of processing car valve barrel has solved current shaping reamer, appears the twist-off phenomenon easily in the use to in the cutting, the great problem of sweeps is to machining precision's influence.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a multi-section forming reamer for machining an automobile valve sleeve comprises a cutter handle, wherein one end of the cutter handle is fixedly connected with a cutter body which coaxially rotates along with the cutter handle, the outer wall of the cutter body is provided with four cutting edges, the four cutting edges respectively spirally extend to the end part of the cutter body along the axial direction of the cutter handle and are intersected with the center of the end part of the cutter body to form a cutter head, and a chip discharge groove is formed between each cutting edge; the outer side end face of the blade is provided with a first cutting face and a second cutting face respectively, the first cutting face and the second cutting face are arranged symmetrically, an angle formed between the first cutting face and the second cutting face along the axial direction of the tool holder is one hundred and seventy degrees, the first cutting face and the second cutting face are provided with buffer grooves along the axial direction of the tool holder, and the buffer grooves are communicated with the chip grooves.

Preferably, the chip grooves spirally extend from the end part of the cutter body to the front part of the cutter handle to be cut off, and the axial cut-off positions of the chip grooves spirally extending to the front part of the cutter handle are different.

Preferably, the height of each chip groove spirally extending to the axial stop position in the front of the cutter handle increases progressively along the circumferential direction of the side surface of the cutter handle, and the cross section of each chip groove perpendicular to the spiral direction of the chip groove is in the shape of a circular arc.

Preferably, the size of the cross section of the chip groove perpendicular to the spiral direction of the chip groove is gradually increased from the cutter body to the cutter handle, and an angle a formed by the tangential direction of the spiral direction of the blade and the axial direction of the cutter handle is thirteen degrees.

Preferably, the tool bit comprises a first end face edge, a second end face edge, a third end face edge and a fourth end face edge which are respectively arranged at the ends of the four cutting edges, the first end face edge and the third end face edge are symmetrical with respect to the center of the end of the tool body, and the second end face edge and the fourth end face edge are symmetrical with respect to the center of the end of the tool body.

Preferably, the blade comprises base member, first wearing layer, second wearing layer and third wearing layer, the base member is located the inside intermediate position of blade, first wearing layer is located the outside of base member and wraps up the base member, the second wearing layer is located the outside of first wearing layer and wraps up first wearing layer, the third wearing layer is located the outside of second wearing layer and wraps up the second wearing layer.

Advantageous effects

The utility model provides a multistage shaping reamer of processing car valve barrel. Compared with the prior art, the method has the following beneficial effects:

(1) this processing car valve barrel's multistage shaping reamer, through first cutting face, the second cutting face is processed according to the order, the resistance in the blade course of working has been reduced like this, thereby the work piece roughness that the cutting was come out is higher, set up the dashpot that sets up simultaneously, make the reamer offset at the in-process atress of processing, the cutting strength of blade has been strengthened, the cutter life-span has been promoted, discharge the sweeps high-efficient fast to the chip groove in simultaneously, make the cutting stably go on, current shaping reamer has been solved, twist-off phenomenon appears in the use easily, and in the cutting, the sweeps is to the great problem of influence of machining precision.

(2) This multistage shaping reamer of processing car valve barrel, through chip groove discharge sweeps, because every chip groove spiral extends to the anterior axial of handle of a knife by the position diverse, the discharge of smear metal can effectively stagger, avoid the chip discharge of the different chip grooves that cause when this by the position is the same to dash the obstructed problem of chip removal that leads to mutually, the high-efficient quick discharge sweeps takes away most cutting heat simultaneously, makes the cutting go on steadily, reduces the cutter ageing speed simultaneously.

Drawings

FIG. 1 is a perspective view of the external structure of the present invention;

FIG. 2 is a schematic view of a tool bit structure of the present invention;

fig. 3 is a cross-sectional view of the middle blade of the present invention.

In the figure: 1. a knife handle; 2. a blade body; 3. a land; 4. a chip groove; 5. a cutter head; 201. a substrate; 202. a first wear resistant layer; 203. a second abrasion resistant layer; 204. a third wear layer; 301. a first cut surface; 302. a second cutting face; 303. a buffer tank; 501. a first end face edge; 502. a second end face blade; 503. a third end face edge; 504. a fourth end edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a multi-section forming reamer for machining an automobile valve sleeve comprises a cutter handle 1, wherein one end of the cutter handle 1 is fixedly connected with a cutter body 2 which coaxially rotates along with the cutter handle 1, four cutting edges 3 are arranged on the outer wall of the cutter body 2, the four cutting edges 3 respectively extend to the end part of the cutter body 2 along the axial direction of the cutter handle 1 in a spiral mode and are intersected with the center of the end part of the cutter body 2 to form a cutter head 5, and a chip discharge groove 4 is formed between each cutting edge 3; the outer side end face of the blade 3 is respectively provided with a first cutting face 301 and a second cutting face 302, the first cutting face 301 and the second cutting face 302 are symmetrically arranged, an angle formed between the first cutting face 301 and the second cutting face 302 along the axial direction of the tool holder 1 is one hundred and seventy degrees, the first cutting face 301 and the second cutting face 302 are provided with a buffer groove 303 along the axial direction of the tool holder 1, the buffer groove 303 is communicated with the chip discharge groove 4, and the first cutting face 301 and the second cutting face 302 are processed in sequence, so that the resistance in the processing process of the tool body 2 is reduced, the roughness of a cut workpiece is higher, meanwhile, the arranged buffer groove 303 is used for enabling a reamer to be balanced in the processing process, the cutting strength of the tool body 2 is enhanced, the service life of the tool is prolonged, and meanwhile, waste chips are efficiently and quickly discharged into the chip discharge groove 4, so that the cutting is stably carried out; the chip discharge grooves 4 spirally extend from the end part of the cutter body 2 to the front part of the cutter handle 1 to be cut off, each chip discharge groove 4 spirally extends to the front part of the cutter handle 1 at different axial cut-off positions, generated chips are respectively discharged through the chip discharge grooves 4, and the chip discharge can be effectively staggered due to the different axial cut-off positions of each chip discharge groove 4 spirally extending to the front part of the cutter handle 1, so that the problem of chip discharge blockage caused by the fact that the chip discharge of different chip discharge grooves 4 are mutually flushed when the cut-off positions are the same is solved, waste chips are efficiently and quickly discharged, most of cutting heat is taken away, the cutting is stably carried out, and the aging speed of the cutter is reduced; the height of each chip groove 4, which extends to the axial stop position in the front of the cutter handle 1 in a spiral mode, is increased gradually along the circumferential direction of the side face of the cutter handle 1, the cross section of each chip groove 4, which is perpendicular to the spiral direction, is arc-shaped, the size of the cross section of each chip groove 4, which is perpendicular to the spiral direction, from the cutter body 2 to the cutter handle 1 is gradually increased, namely, a chip removal channel is gradually increased along the chip removal direction, which obviously contributes to efficient and rapid discharge of chips, enables cutting to be stable, and reduces the aging speed of the cutter; the size of the section of the chip groove 4 perpendicular to the spiral direction of the chip groove is gradually increased from the cutter body 2 to the cutter handle 1, and the angle a formed by the tangential direction of the spiral direction of the blade 3 and the axial direction of the cutter handle 1 is thirteen degrees; the tool bit 5 comprises a first end face edge 501, a second end face edge 502, a third end face edge 503 and a fourth end face edge 504 which are respectively arranged at the end parts of the four cutting edges 3, the first end face edge 501 and the third end face edge 503 are symmetrical with respect to the center of the end part of the tool body 2, the second end face edge 502 and the fourth end face edge 504 are symmetrical with respect to the center of the end part of the tool body 2, the tool bit 5 arranged on the forming reamer can further process the bottom end face of a hole in reaming, the side face and the bottom face of the hole can be processed without tool changing, the processed hole bottom is smoother and smoother, the processing precision of the hole is higher, the first end face edge 501 and the third end face edge 503 are symmetrical with respect to the center of the end part of the tool bit, the second end face edge 502 and the fourth end face edge 504 are symmetrical with respect to the center of the end part of the tool bit, the end face edges with the central symmetry are stressed and offset in the processing process, the cutting strength of the end face knife is enhanced, and the service life of the tool is prolonged; the cutter body 2 is composed of a base body 201, a first wear-resistant layer 202, a second wear-resistant layer 203 and a third wear-resistant layer 204, the base body 201 is located in the middle of the interior of the cutter body 2, the first wear-resistant layer 202 is located on the outer side of the base body 201 and wraps the base body 201, the second wear-resistant layer 203 is located on the outer side of the first wear-resistant layer 202 and wraps the first wear-resistant layer 202, the third wear-resistant layer 204 is located on the outer side of the second wear-resistant layer 203 and wraps the second wear-resistant layer 203, the hardness of the first wear-resistant layer 201, the hardness of the second wear-resistant layer 202 and the hardness of the third wear-resistant layer 203 are sequentially increased, the first wear-resistant layer 201 is of a structure formed through argon gas-phase deposition, the second wear-resistant layer 202 of a structure formed through argon gas-phase deposition, the third wear-resistant layer 203 of a structure formed through nitrogen gas-phase deposition can improve the wear resistance of the reamer, and prolong the service life of the reamer.

And those not described in detail in this specification are well within the skill of those in the art.

In the process that the formed reamer cuts a workpiece, the first cutting surface 301 and the second cutting surface 302 are processed in sequence, so that the resistance in the processing process of the cutter body 2 is reduced, the roughness of the cut workpiece is higher, meanwhile, the buffer groove 303 is arranged, so that the reamer bears the stress in the processing process, the cutting strength of the cutter body 2 is enhanced, the service life of the cutter is prolonged, and meanwhile, waste chips are efficiently and quickly discharged into the chip discharge groove 4, so that the cutting is stably carried out; the generated cuttings are respectively discharged through the cuttings grooves 4, and as the axial stop positions of the cuttings grooves 4 spirally extending to the front part of the cutter handle 1 are different, the cuttings can be effectively discharged in a staggered manner, so that the problem of blocked cuttings due to the fact that the cuttings of different cuttings grooves 4 are discharged and flushed with each other when the stop positions are the same is solved, the scraps are efficiently and quickly discharged, most of cutting heat is taken away, the cutting is stably carried out, and the aging speed of the cutter is reduced; the size of the chip removal groove 4 in the direction from the cutter body 2 to the cutter handle 1 on the cross section perpendicular to the spiral direction is gradually increased, namely the chip removal channel is gradually increased along the chip removal direction, which is obviously more beneficial to the efficient and rapid discharge of chips, so that the cutting is stably carried out, and the aging speed of the cutter is reduced; the tool bit 5 that sets up on the shaping reamer can further process the hole bottom end face in the reaming, need not the tool changing can process the side and the bottom surface in hole, make the hole bottom of processing more smooth level and smooth and the machining precision in hole higher, because first terminal surface sword 501 and third terminal surface sword 503 are about tool bit tip centrosymmetric, second terminal surface sword 502 and fourth terminal surface sword 504 are about tool bit tip centrosymmetric, centrosymmetric terminal surface sword is balanced at the in-process atress of processing, the cutting strength of terminal surface sword has been strengthened, the cutter life has been promoted, above is exactly a theory of operation of the multistage shaping reamer of processing car valve barrel.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a multistage shaping reamer of processing car valve barrel, includes handle of a knife (1), the one end fixedly connected with of handle of a knife (1) is along with coaxial pivoted blade (2) of handle of a knife (1), its characterized in that: the outer wall of the knife body (2) is provided with four cutting edges (3), the four cutting edges (3) respectively extend to the end part of the knife body (2) along the axial direction of the knife handle (1) in a spiral manner and are intersected with the center of the end part of the knife body (2) to form a knife head (5), and a chip discharge groove (4) is formed between each cutting edge (3);

the outer side end face of the blade (3) is provided with a first cutting face (301) and a second cutting face (302) respectively, the first cutting face (301) and the second cutting face (302) are arranged symmetrically, an angle formed between the first cutting face (301) and the second cutting face (302) along the axial direction of the tool shank (1) is one hundred seventy degrees, a buffer groove (303) is formed in the first cutting face (301) and the second cutting face (302) along the axial direction of the tool shank (1), and the buffer groove (303) is communicated with the chip discharge groove (4).

2. The multi-section molding reamer for machining the valve housing of the automobile as claimed in claim 1, wherein: chip grooves (4) extend to the front part of the tool shank (1) from the end part of the tool body (2) in a spiral mode and are cut off, and the axial cut-off positions of the chip grooves (4) extending to the front part of the tool shank (1) in a spiral mode are different.

3. The multi-section reamer of claim 1 for machining valve pockets of automobiles, wherein: the height of the axial stop position of each chip groove (4) spirally extending to the front part of the cutter handle (1) increases progressively along the circumferential direction of the side surface of the cutter handle (1), and the cross section of each chip groove (4) in the direction perpendicular to the spiral direction of the chip groove is arc-shaped.

4. The multi-section reamer of claim 1 for machining valve pockets of automobiles, wherein: the size of the cross section of the chip groove (4) perpendicular to the spiral direction of the chip groove is gradually increased from the cutter body (2) to the cutter handle (1), and an angle a formed by the tangential direction of the spiral direction of the blade (3) and the axial direction of the cutter handle (1) is thirteen degrees.

5. The multi-section reamer of claim 1 for machining valve pockets of automobiles, wherein: the tool bit (5) comprises a first end face edge (501), a second end face edge (502), a third end face edge (503) and a fourth end face edge (504) which are arranged at the ends of four cutting edges (3), the first end face edge (501) and the third end face edge (503) are symmetrical about the center of the end of the tool body (2), and the second end face edge (502) and the fourth end face edge (504) are symmetrical about the center of the end of the tool body (2).

6. The multi-section reamer of claim 1 for machining valve pockets of automobiles, wherein: the utility model discloses a knife blade, including blade (2), blade (2) and third wearing layer (204), base member (201), first wearing layer (202), second wearing layer (203) constitute, base member (201) are located the inside intermediate position of blade (2), first wearing layer (202) are located the outside of base member (201) and wrap up base member (201), second wearing layer (203) are located the outside of first wearing layer (202) and wrap up first wearing layer (202), third wearing layer (204) are located the outside of second wearing layer (203) and wrap up second wearing layer (203).

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