阅读说明：本技术 导向器段间槽的加工装置 (Machining device for grooves between guide sections ) 是由 何思洋 李旭东 徐宇超 朱高东 杨文彪 吴豪 刘卫平 黄佳梁 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种导向器段间槽的加工装置,包括：石墨电极片(A)；用于夹持所述石墨电极片(A)的电极夹头,所述电极夹头具有与机床主轴(207)连接的连接部；用于夹持需要加工段间槽的零件(300)的夹具(100),所述电极夹头夹持的所述石墨电极片(A)能够对夹持于所述夹具上的所述零件(300)进行段间槽的加工。本发明提供的导向器段间槽的加工装置,采用整体石墨的石墨电极片作为电极片,有效降低了电极损耗,减少了电极修磨时间,进而缩短加工时间(如缩短至6小时/件),进而提高了加工效率；采用电极夹头夹持石墨电极片,提高了加工刚性,石墨电极片的形变影响小,使得段间槽尺寸稳定性好,进而提高了段间槽的尺寸精度。(The invention discloses a processing device of a guide device segment groove, comprising: a graphite electrode sheet (A); the electrode chuck is used for clamping the graphite electrode slice (A) and is provided with a connecting part connected with a machine tool spindle (207); the fixture (100) is used for clamping parts (300) needing to be processed with the inter-segment grooves, and the graphite electrode plates (A) clamped by the electrode clamp can process the inter-segment grooves of the parts (300) clamped on the fixture. According to the machining device for the guide inter-segment groove, the graphite electrode plate of the whole graphite is used as the electrode plate, so that the electrode loss is effectively reduced, the electrode grinding time is reduced, the machining time is further shortened (for example, shortened to 6 hours/piece), and the machining efficiency is further improved; the electrode chuck is adopted to clamp the graphite electrode plate, so that the processing rigidity is improved, the deformation influence of the graphite electrode plate is small, the dimensional stability of the intersegment groove is good, and the dimensional precision of the intersegment groove is improved.)

1. A device for machining a groove between segments of a guide, comprising:

a graphite electrode sheet (A);

the electrode chuck is used for clamping the graphite electrode slice (A) and is provided with a connecting part connected with a machine tool spindle (207);

the fixture (100) is used for clamping parts (300) needing to be processed with the inter-segment grooves, and the graphite electrode plates (A) clamped by the electrode clamp can process the inter-segment grooves of the parts (300) clamped on the fixture.

2. A device for forming a guide-segment groove as set forth in claim 1, wherein said electrode holder comprises:

a connecting rod (202), one end of the connecting rod (202) having the connecting portion for connecting with the machine tool spindle (207);

a bottom plate (205), the bottom plate (205) being connected to the other end of the connecting rod (202);

a platen (206), the graphite electrode sheet (A) being located between the platen (206) and the base plate (205);

a connector (204) connecting the base plate (205) and the pressure plate (206).

3. A device for processing a guide segment groove as defined in claim 2, wherein the graphite electrode sheet (a) has a concavo-convex structure;

the bottom plate (205) and/or the pressure plate (206) are/is provided with a positioning structure which is matched with the concave-convex structure in a concave-convex mode.

4. A device for forming a groove between a guide segment as set forth in claim 2, wherein the other end of said connecting rod (202) has a connecting plate;

the connecting plate and the bottom plate (205) are positioned through a positioning component and connected through a connecting piece (204).

5. A device for forming a guide-segment groove according to claim 4, wherein said positioning member comprises a diamond-shaped pin (201) and a positioning pin (203);

the diamond-shaped pins (201) and the positioning pins (203) are positioned at different positions of the overlapping area of the connecting plate and the bottom plate (205).

6. A device for forming a guide-segment groove according to claim 1, wherein said jig comprises:

a locating body (4), the locating body (4) having an inner bore for locating contact with an outer wall of the part (300);

the positioning structure is arranged at one end of the positioning body (4) and is provided with a positioning pressing plate (15) used for being in contact with the end face of the part (300);

the positioning device comprises a base (1), wherein a supporting piece for supporting the positioning body (4) is arranged on the base (1), and an end face positioning piece (14) positioned with one end face of the positioning body (4) is arranged on one side face of the supporting piece;

and the positioning plate (13) is detachably connected with the other side surface of the supporting piece.

7. A device for forming guide-segment grooves according to claim 6, wherein the positioning body (4) has a part-positioning structure for positioning the part (300);

the positioning body (4) is provided with a first through hole penetrating through the outer wall and the inner wall of the positioning body;

the part positioning structure comprises a bushing (6) sleeved in the first through hole, a baffle plate positioned on the outer wall of the positioning body (4) and used for preventing the bushing (6) from falling out of the first through hole, a fixing part (5) connected with the baffle plate and the positioning body (4), and a first bolt (7) which can penetrate through the baffle plate and is in splicing fit with the bushing (6);

one end of the first bolt (7) penetrating out of the inner wall of the positioning body (4) is a positioning end used for being matched with the part (300) in a positioning mode.

8. A device for machining grooves between guide segments as claimed in claim 6, further comprising a resilient connecting member connecting the positioning plate (13) and the positioning body (4);

the end surface of the positioning body (4) is provided with a positioning groove, and the positioning plate (13) is provided with a second through hole penetrating through two side surfaces of the positioning plate;

the elastic connection assembly includes:

a guide sleeve (11) arranged in the second through hole;

a fixed connecting piece (9) fixedly connecting the guide sleeve (11) and the positioning plate (13);

the second bolt (8) is telescopically arranged in the guide sleeve (11), one end, far away from the positioning body (4), of the second bolt (8) penetrates through the guide sleeve (11), and one end, facing the positioning body (4), of the second bolt (8) is matched with the positioning groove;

the bolt adjusting key (12) is arranged at one end, far away from the positioning body (4), of the second bolt (8), and the end face, far away from the positioning body (4), of the guide sleeve (11) is in positioning contact with the end face, facing the positioning body (4), of the bolt adjusting key (12);

and the two ends of the compression spring (10) are respectively contacted with the guide sleeve (11) and the second bolt (8).

9. A device for machining a guide intersegment, according to claim 6, further comprising a pair of knife members detachably mounted to said base (1);

the pair of cutter components comprises a first pair of cutter blocks (17) and a second pair of cutter blocks (20), and a cutter groove (g) is formed between the first pair of cutter blocks (17) and the second pair of cutter blocks (20).

10. A device for forming a groove between guide segments as claimed in claim 9, wherein said base (1) has a base positioning pin;

the tool setting part further comprises:

the first pair of cutter blocks (17) and the second pair of cutter blocks (20) are arranged on one surface of the support (23), and support inserting holes are formed in the other surface of the support (23);

and a support bushing is arranged in the support inserting hole, and the base positioning pin is in inserting fit with the support bushing.

Technical Field

The invention relates to the technical field of aviation equipment processing devices, in particular to a processing device for a guide device segment groove.

Background

An aircraft engine is the "heart" of an aircraft. With the development of the world aviation industry, the aviation engine continuously develops new engines and simultaneously puts higher requirements on the material and structural characteristics of the engines.

The aircraft engine guider belongs to static blade class part, and the part belongs to engine heavy part, and the part structure is complicated, and the part hole has six intersegmental grooves, and conventional machining can't realize.

The processing difficulty of the section groove is high, the processing efficiency of the prior processing technology is low, the size qualified rate is low, and the position qualified rate is low.

At present, a numerical control milling machine and a dividing cutter head are adopted, and a small-diameter milling cutter is adopted to mill and process an intersegmental groove in a sectional mode.

However, the numerical control milling machine and the index cutter have poor machining accuracy, and the positional accuracy of the inter-stage groove is not high. The groove width of the section groove is only 0.3, the diameter of the milling cutter is small, the rigidity is poor, and the cutter is easy to swing in the machining process, so that the dimensional accuracy of the section groove is not high. And the processing efficiency is low, and the average processing time is 24 hours per piece.

Therefore, how to improve the machining precision and the machining efficiency is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a device for machining a groove between segments of a guide, so as to improve machining accuracy and machining efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

a device for machining a groove between segments of a guide, comprising:

a graphite electrode sheet;

the electrode chuck is used for clamping the graphite electrode slice and is provided with a connecting part connected with a main shaft of the machine tool;

the graphite electrode plate clamped by the electrode chuck can process the section groove of the part clamped on the clamp.

Optionally, in the above device for processing a guide segment groove, the electrode holder includes:

a connecting rod, one end of which has the connecting part for connecting with the machine tool spindle;

the bottom plate is connected with the other end of the connecting rod;

the graphite electrode plate is positioned between the pressing plate and the bottom plate;

and the connecting piece is used for connecting the bottom plate with the pressing plate.

Optionally, in the device for processing the groove between the sections of the guide, the graphite electrode sheet has a concave-convex structure;

the bottom plate and/or the pressing plate are/is provided with a positioning structure which is in concave-convex fit with the concave-convex structure.

Optionally, in the device for processing a groove between guide segments, the other end of the connecting rod is provided with a connecting plate;

the connecting plate and the bottom plate are positioned through the positioning assembly and are connected through the connecting piece.

Optionally, in the device for processing a groove between guide segments, the positioning assembly includes a diamond pin and a positioning pin;

the diamond-shaped pin and the positioning pin are located at different positions of the overlapping area of the connecting plate and the bottom plate.

Optionally, in the above device for machining a guide inter-segment groove, the jig includes:

a locating body having an inner bore for locating contact with an outer wall of the part;

the positioning structure is arranged at one end of the positioning body and is provided with a positioning pressing plate used for being in contact with the end face of the part;

the base is provided with a supporting piece for supporting the positioning body, and one side surface of the supporting piece is provided with an end surface positioning piece positioned with one end surface of the positioning body;

and the positioning plate is detachably connected with the other side surface of the supporting piece.

Optionally, in the device for machining a groove between guide segments, the positioning body is provided with a part positioning structure for positioning the part;

the positioning body is provided with a first through hole penetrating through the outer wall and the inner wall of the positioning body;

the part positioning structure comprises a bushing sleeved in the first through hole, a baffle plate positioned on the outer wall of the positioning body and used for preventing the bushing from falling out of the first through hole, a fixing part connected with the baffle plate and the positioning body, and a first bolt which can penetrate through the baffle plate and is in inserted fit with the bushing;

the first bolt is used for penetrating out one end of the inner wall of the positioning body and is used for positioning the positioning end matched with the part in a positioning mode.

Optionally, the machining device for the guide inter-segment groove further comprises an elastic connection assembly for connecting the positioning plate and the positioning body;

the end surface of the positioning body is provided with a positioning groove, and the positioning plate is provided with a second through hole penetrating through two side surfaces of the positioning plate;

the elastic connection assembly includes:

the guide sleeve is arranged in the second through hole;

the fixed connecting piece is fixedly connected with the guide sleeve and the positioning plate;

the second bolt is telescopically arranged in the guide sleeve, one end of the second bolt, which is far away from the positioning body, penetrates out of the guide sleeve, and one end of the second bolt, which faces the positioning body, is matched with the positioning groove;

the end face of the guide sleeve, which is far away from the positioning body, is in positioning contact with the end face of the bolt adjusting key, which faces the positioning body;

and the two ends of the compression spring are respectively contacted with the guide sleeve and the second bolt.

Optionally, the machining device for the guide inter-segment groove further comprises a tool setting member detachably mounted on the base;

the pair of cutter components comprises a first pair of cutter blocks and a second pair of cutter blocks, and a cutter groove g is formed between the first pair of cutter blocks and the second pair of cutter blocks.

Optionally, in the device for processing a groove between guide segments, the base has a base positioning pin;

the tool setting part further comprises:

the first pair of cutter blocks and the second pair of cutter blocks are arranged on one surface of the support, and the other surface of the support is provided with a support inserting hole;

and a support bushing is arranged in the support inserting hole, and the base positioning pin is in inserting fit with the support bushing.

According to the technical scheme, the machining device for the guide inter-segment groove, provided by the invention, adopts the graphite electrode slice of the whole graphite as the electrode slice, so that the electrode loss is effectively reduced, the electrode grinding time is reduced, the machining time is further shortened (for example, the time is shortened to 6 hours per piece), and the machining efficiency is further improved; and the electrode chuck is adopted to clamp the graphite electrode plate, so that the machining rigidity is improved, the deformation influence of the graphite electrode plate is small, the dimensional stability of the inter-segment groove is good, and the dimensional precision of the inter-segment groove is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of an electrode chuck according to an embodiment of the present invention;

FIG. 2 is a schematic bottom view of an electrode chuck according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a side view of an electrode chuck according to an embodiment of the present invention;

FIG. 4 is a schematic front view of a clamp according to an embodiment of the present invention;

FIG. 5 is a schematic view of the cross-section of FIG. 4 along plane E-E;

FIG. 6 is a sectional view taken along the line A-A in FIG. 4;

FIG. 7 is a sectional view taken along the line B-B in FIG. 6;

FIG. 8 is a sectional view taken along plane C-C of FIG. 7;

FIG. 9 is an enlarged partial view of the portion L of FIG. 7;

FIG. 10 is a cross-sectional view taken along plane D-D of FIG. 6;

FIG. 11 is a sectional view taken along plane F-F of FIG. 6;

FIG. 12 is a schematic perspective view of a clamp according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a part mounted on a fixture according to an embodiment of the present invention.

Detailed Description

The invention discloses a machining device for a guide device section groove, which aims to improve machining precision and machining efficiency.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 13, an embodiment of the present invention provides a device for machining a groove between guide segments, including: a graphite electrode slice A; an electrode chuck for clamping the graphite electrode slice A, wherein the electrode chuck is provided with a connecting part connected with a machine tool spindle 207; the fixture 100 is used for clamping the part 300 needing to be processed with the segment groove, and the graphite electrode slice A clamped by the electrode clamp can process the segment groove on the part 300 clamped on the fixture.

According to the machining device for the groove between the sections of the guider, provided by the embodiment of the invention, the graphite electrode plate A of the whole graphite is used as the electrode plate, so that the electrode loss is effectively reduced, the electrode grinding time is reduced, the machining time is further shortened (for example, shortened to 6 hours per piece), and the machining efficiency is further improved; and the electrode chuck is adopted to clamp the graphite electrode plate A, so that the processing rigidity is improved, the deformation influence of the graphite electrode plate A is small, the dimensional stability of the inter-segment groove is good, and the dimensional precision of the inter-segment groove is improved.

Preferably, the part 300 is a guide.

As shown in fig. 1, 2 and 3, in order to improve the stability of the electrode cartridge for clamping the graphite electrode sheet a, the electrode cartridge includes a connecting rod 202, a bottom plate 205, a pressing plate 206, and a connecting member 204 for connecting the bottom plate 205 and the pressing plate 206. One end of the connecting rod 202 has a connecting portion for connecting with a machine tool spindle 207; the bottom plate 205 is connected with the other end of the connecting rod 202; the graphite electrode sheet a is located between the press plate 206 and the bottom plate 205.

In this embodiment, the connecting portion is a through hole sleeved on the spindle 207 of the machine tool.

Further, the graphite electrode sheet a has a concavo-convex structure; the base plate 205 and the pressing plate 206 have a positioning structure that is concavo-convex fitted with the concavo-convex structure. The positioning structure that is concave-convex matched with the concave-convex structure may be provided only on the bottom plate 205 or the pressure plate 206.

In order to facilitate the adjustment of the position of the graphite electrode plate A relative to the electrode chuck, the concave-convex structure comprises a groove and a bulge which is arranged in parallel with the groove; the extending direction of the groove is parallel to the moving direction of the graphite electrode plate A relative to the electrode chuck when the graphite electrode plate A is worn.

Preferably, the other end of the connecting rod 202 has a connecting plate; the connecting plate is positioned with the bottom plate 205 by a positioning assembly and connected by a connecting piece 204. The connection stability of the bottom plate 205 and the connecting rod 202 is effectively improved by the positioning connection of the connecting plate and the bottom plate 205.

For positioning convenience, the positioning assembly comprises a diamond pin 201 and a positioning pin 203; the diamond-shaped pins 201 and the positioning pins 203 are positioned at different positions in the overlapping area of the connecting plate and the bottom plate 205. The positioning pin 203 can complete initial positioning, and the diamond-shaped pin 201 can prevent the connecting plate and the bottom plate 205 from rotating relatively.

As shown in fig. 4-13, the fixture includes a positioning body 4, a base 1, a positioning plate 13, and a positioning structure disposed at one end of the positioning body 4. The positioning body 4 has an inner hole for positioning contact with the outer wall of the part 300; the positioning structure has a positioning platen 15 for contact with an end face of the part 300; a supporting piece for supporting the positioning body 4 is arranged on the base 1, and an end face positioning piece 14 positioned with one end face of the positioning body 4 is arranged on one side face of the supporting piece; the positioning plate 13 is detachably coupled to the other side of the supporter. Through the arrangement, the positioning effect can be ensured.

In this embodiment, the positioning structure further includes an adjusting screw 16, the positioning pressing plate 15 has an open slot, and the positioning pressing plate 15 is connected to the positioning body 4 through the open slot by the adjusting screw 16. When the adjusting screw 16 is unscrewed, the positioning pressure plate 15 can be moved relative to the positioning body 4 by relative movement of the adjusting screw 16 in the opening groove.

Furthermore, in order to improve the positioning effect and further improve the position accuracy of the inter-segment groove, the positioning body 4 is provided with a part positioning structure for positioning the part 300; the positioning body 4 is provided with a first through hole which penetrates through the outer wall and the inner wall of the positioning body; the part positioning structure comprises a lining 6 sleeved in the first through hole, a baffle plate positioned on the outer wall of the positioning body 4 and used for preventing the lining 6 from falling out of the first through hole, a fixing part 5 for connecting the baffle plate and the positioning body 4, and a first bolt 7 which can penetrate through the baffle plate and is in splicing fit with the lining 6; one end of the first pin 7, which is used for penetrating out of the inner wall of the positioning body 4, is a positioning end used for positioning and matching with the part 300. The first pin 7 is detachably inserted into the bushing 6, so that the positioning effect of the part 300 can be realized.

The processing device of the guide device segment groove provided by the embodiment of the invention also comprises an elastic connecting component for connecting the positioning plate 13 and the positioning body 4; the end surface of the positioning body 4 is provided with a positioning groove, and the positioning plate 13 is provided with a second through hole penetrating through the two side surfaces thereof. In this embodiment, the end face of the positioning body 4 has a plurality of positioning grooves, and the plurality of positioning grooves are distributed along the circumferential direction of the positioning body 4, and the specific distribution structure is determined according to the positioning requirement, which is not described in detail herein.

The elastic connection assembly includes: a guide sleeve 11 arranged in the second through hole; a fixed connecting piece 9 for fixedly connecting the guide sleeve 11 and the positioning plate 13; the second bolt 8 is telescopically arranged in the guide sleeve 11, one end, far away from the positioning body 4, of the second bolt 8 penetrates through the guide sleeve 11, and one end, facing the positioning body 4, of the second bolt 8 is matched with the positioning groove; the bolt adjusting key 12 is arranged at one end of the second bolt 8 far away from the positioning body 4, and the end surface of the guide sleeve 11 far away from the positioning body 4 is in positioning contact with the end surface of the bolt adjusting key 12 facing the positioning body 4; and the two ends of the compression spring 10 are respectively contacted with the guide sleeve 11 and the second bolt 8.

Through the arrangement, the elastic connection between the positioning plate 13 and the positioning body 4 can be realized, the rigid connection between the positioning body 4 and the base 1 (the positioning plate 13) is effectively avoided on the basis of ensuring the positioning of the positioning groove on the end surface of the positioning body 4 to the relative position between the positioning body 4 and the base 1 (the positioning plate 13), the transmission of vibration in the machining process is effectively avoided, and the service life of the machining device for the groove between the sections of the guider is prolonged.

The processing device of the guide inter-segment groove provided by the embodiment of the invention also comprises a tool setting component which is detachably arranged on the base 1; the pair of knife components comprises a first pair of knife blocks 17 and a second pair of knife blocks 20, and a knife groove g is formed between the first pair of knife blocks 17 and the second pair of knife blocks 20.

The base 1 is provided with a base positioning pin; the tool setting part still includes: the first pair of cutter blocks 17 and the second pair of cutter blocks 20 are arranged on one surface of the support 23, and support inserting holes are formed in the other surface of the support 23; the support inserting hole is internally provided with a support bushing, and the base positioning pin is inserted and matched with the support bushing. The structure that the cutter aligning component is detachably arranged on the base 1 is realized through the arrangement. Of course, the structure that the tool setting component is detachably mounted on the base 1 can also be realized by a buckle or other structures, which are not described in detail herein and are all within the protection scope.

Specifically, the support bush insertion includes a first support bush 21 and a second support bush 25, and the number of the support insertion holes is plural. A first support bushing 21 is arranged in one part of the plurality of support inserting holes; another portion of the plurality of holder insertion holes has a first holder bushing 25 therein. The base positioning pin comprises a base cylindrical pin 24 and a base diamond-shaped pin 22, the base cylindrical pin 24 is matched with the first support bushing 21, and the base diamond-shaped pin 22 is matched with the second support bushing 25.

In the specific processing process:

the first step is as follows: the whole graphite is processed into a graphite electrode plate A, the graphite electrode plate A is arranged on a bottom plate 205 of the electrode chuck, and a pressure plate 206 is connected with the bottom plate 205 through a connecting piece 204 (such as a screw and the like), so that the graphite electrode plate A and the electrode chuck are fixed;

the second step is that: the connecting plate and the bottom plate 205 of the connecting rod 202 are positioned by the positioning pin 203, and the connecting plate of the connecting rod 202 and the bottom plate 205 are fixed by the connecting piece 204 (such as a screw and the like);

the third step: connecting and fixing a connecting rod 202 of the electrode chuck with a machine tool spindle 207;

the fourth step: the part 300 is arranged in a clamp, and the marked part 300 (blade) is limited in the circumferential direction by the through angle pins 26;

the fifth step: the part 300 is pressed by the positioning pressing plate 15;

and a sixth step: moving the electrode chuck to a tool setting part of the clamp for tool setting operation; in the tool setting operation process, the graphite electrode slice A needs to fall into the middle of the tool setting groove g;

the seventh step: after tool setting, all coordinates of the machine tool coordinates are cleared, and a processing zero point is determined.

Eighth step: and starting processing, when the first groove is processed, rotating the positioning body 4 to the next processing station by pulling out the first bolt 7 and the second bolt 8, inserting the first bolt 7 and the second bolt 8, and processing the next section groove.

The ninth step: and repeating the eighth step to finish machining all the inter-segment grooves.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.