CN110560803A - Adjustable electric spark electrode assembly - Google Patents
Adjustable electric spark electrode assembly Download PDFInfo
- Publication number
- CN110560803A CN110560803A CN201910750118.9A CN201910750118A CN110560803A CN 110560803 A CN110560803 A CN 110560803A CN 201910750118 A CN201910750118 A CN 201910750118A CN 110560803 A CN110560803 A CN 110560803A
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- Prior art keywords
- electrode
- gear
- hole
- fastener
- adjusting tool
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The invention relates to an adjustable electric spark electrode assembly. The adjustable electric spark electrode assembly comprises an electrode seat, a supporting rod, an electrode tip and a threaded fastener, wherein the supporting rod extends along the vertical direction, the lower end of the supporting rod is fixed on the electrode seat, and the upper end of the supporting rod is used for being connected with an electric spark machine tool; the electrode head is assembled on the electrode base in a guiding and moving way along the direction vertical to the extension direction of the supporting rod and is used for processing a hole wall groove on the hole wall of the hole to be processed along the direction vertical to the central axis of the hole to be processed; the electrode head is provided with a rack extending along the direction of guiding movement, the electrode seat is rotatably assembled with a gear in meshing transmission with the rack, the axis of the gear is parallel to the axis of the supporting rod, and the top of the gear is provided with an adjusting structure for inserting and matching a gear adjusting tool and stopping rotation and matching with the adjusting tool; the threaded fastener is mounted on the electrode holder and is used for fastening the electrode tip with the electrode holder. Above-mentioned technical scheme improves the depth dimension of workable hole wall groove through the displacement who adjusts the electrode tip, and application scope obtains improving.
Description
Technical Field
The invention relates to an adjustable electric spark electrode assembly.
background
Electrical discharge machining is a machining process that uses a discharge electrode having a specific geometry to machine the geometry of the electrode on a metal (conductive) part. Electric discharge machining is a method of machining a workpiece in a certain medium by the electroerosion action of pulse discharge between a tool electrode and a workpiece electrode.
In the prior art, blind holes need to be machined in the hole walls of workpieces, as shown in fig. 1, the axes of a first valve hole 102 and a second valve hole 103 of a workpiece are parallel, a hole wall groove 101, which is communicated with the first valve hole, needs to be machined in the hole wall of the second valve hole 103, the depth direction of the hole wall groove 101 is perpendicular to the hole wall grooves in the axial extension direction of the first valve hole and the second valve hole, and the brief structure is specifically shown in fig. 2. Because the shell part blank is required to be an aluminum alloy forging, the hole wall groove is processed by the process, analysis is carried out according to the cutting machining principle, and if the hole wall groove does not adopt a 3D printing or casting process but adopts a mechanical machining process, only the electric spark process can be selected for machining.
To the processing of above-mentioned hole wall groove 1, there are two kinds of schemes among the prior art, wherein, scheme A is as shown in fig. 3, this scheme adopts and is equal with hole wall groove width, and the electrode tip of length dimension and the depth dimension adaptation of hole wall groove to process the hole wall groove, when putting into the second valve opening with the electrode tip, only need along hole wall groove depth direction process can, but the size of the hole wall groove of this electrode tip processing is less, in case the depth dimension of the hole wall groove that will process is bigger than the length dimension of electrode tip, adopt this scheme just can't reach the processing requirement. Solution B as shown in fig. 4, the electrode tip having a width smaller than that of the hole wall groove 1 and a length slightly longer than that of the electrode tip of solution a is used to form the hole wall groove, and the length of the electrode tip is increased, but the depth of the hole wall groove to which the electrode tip is applied is still hard to exceed the length of the electrode tip itself, and the application range is still small.
Disclosure of Invention
The invention aims to provide an adjustable electric spark electrode assembly to solve the technical problems that in the prior art, the depth of a hole wall groove processed by an electric spark electrode tip is small, and the application range of the electric spark electrode tip is small.
In order to achieve the purpose, the technical scheme of the adjustable electric spark electrode assembly is as follows:
The adjustable electric spark electrode assembly comprises:
An electrode holder;
The supporting rod extends along the up-down direction, the lower end of the supporting rod is fixed on the electrode seat, and the upper end of the supporting rod is used for being connected with an electric spark machine tool and being inserted into a hole to be machined;
The electrode head is guided to move and assembled on the electrode seat along the direction vertical to the extension direction of the supporting rod and is used for machining a hole wall groove on the hole wall of the hole to be machined along the direction vertical to the central axis of the hole to be machined;
The electrode head is provided with a rack extending along the direction of guiding movement, the electrode seat is rotatably assembled with a gear in meshing transmission with the rack, the axis of the gear is parallel to the axis of the supporting rod, and the top of the gear is provided with an adjusting structure which is used for being inserted into a gear adjusting tool inserted into a hole to be processed and is in rotation stopping fit with the gear adjusting tool so as to drive the gear to rotate by screwing the gear adjusting tool;
And the top of the threaded fastener is provided with a connecting structure for inserting and matching a fastener adjusting tool and stopping rotation and matching the fastener adjusting tool so as to enable the electrode tip to be fastened with the electrode holder by screwing the fastener adjusting tool.
the invention has the beneficial effects that: when the adjustable electric spark electrode assembly is used, under the condition that a hole opening is small and the inner space is large, when a hole wall groove with larger depth needs to be machined, the adjustable electric spark electrode assembly is integrally inserted into a hole to be machined and then matched with an adjusting structure on an electrode tip through a gear adjusting tool, the gear adjusting tool is screwed to drive the gear and a rack to be meshed for transmission, the electrode tip is driven to extend, after the adjustable electric spark electrode assembly is adjusted in place, the fastener adjusting tool is matched with a connecting structure on a threaded fastener, the electrode tip is fastened with an electrode holder through the screwing fastener adjusting tool, and then a supporting rod is fixed with an electric spark machine tool to be. For the hole to be processed with the axial equal diameter, the electrode tip can be withdrawn after being processed for a certain depth, then the electrode tip is adjusted and fastened by a gear adjusting tool and a fastener adjusting tool, and then the processing is continued. The electrode tip is driven by the gear adjusting tool to move in a guiding way relative to the electrode holder in a gear transmission way, namely the electrode tip can extend, so that a hole wall groove with a longer size can be machined, and the application range of the adjustable electric spark electrode assembly is widened.
Further, the heights of the electrode holder, the gear and the threaded fastener are all smaller than the height of the highest position of the electrode head.
has the advantages that: the interference between the electrode holder, the gear and the threaded fastener and the hole wall of the hole to be machined can be avoided during electric spark machining.
Further, the support rod, the threaded fastener and the gear are arranged in sequence from back to front in the direction in which the electrode tip moves into the hole wall groove when the hole wall groove is machined.
has the advantages that: the moving distance of the electrode tip can be adjusted to the maximum, so that the size range of the processed hole wall groove is wider.
Furthermore, the bottom of the gear is vertically connected with a connecting rod, and the connecting rod is rotatably assembled on the electrode seat.
Has the advantages that: the gear is rotatably assembled on the electrode holder through the connecting rod, the structure is simple, the gear is convenient to assemble, and a structure special for installing the gear is not required to be arranged on the electrode holder.
Furthermore, be equipped with on the gear and supply gear adjusting tool to insert the gear adjusting tool cooperation blind hole of joining in marriage, gear adjusting tool cooperation blind hole forms adjust the structure, and/or be equipped with on the threaded fastener and supply fastener adjusting tool to insert the fastener adjusting tool cooperation blind hole of joining in marriage, fastener adjusting tool cooperation blind hole forms connection structure.
Has the advantages that: the top of the gear is provided with a gear adjusting tool matching blind hole, so that the gear adjusting tool can adjust the gear conveniently, and the movement of the electrode tip can be adjusted conveniently; set up fastener adjustment tool cooperation blind hole on threaded fastener, the fastener adjustment tool of being convenient for is to the regulation of fastener, and then is convenient for realize the fastening between electrode tip and the electrode holder.
furthermore, the adjustable electric spark electrode assembly also comprises a guide block fixed on the supporting rod, a gear adjusting tool guide hole for a gear adjusting tool to penetrate through and coaxial with the gear adjusting tool matching blind hole is arranged on the guide block, and/or a fastener adjusting tool guide hole for a fastener adjusting tool to penetrate through and coaxial with the fastener adjusting tool matching blind hole is arranged on the guide block.
Has the advantages that: the gear adjusting tool guide hole plays a role in guiding the gear adjusting tool, and the gear adjusting tool guide hole is coaxial with the gear adjusting tool matching blind hole, so that the gear adjusting tool can penetrate through the gear adjusting tool guide hole and the gear adjusting tool matching blind hole at one time, and repeated adjustment is not needed; in a similar way, the guide hole of the fastener adjusting tool is arranged, so that the fastener adjusting tool does not need to be adjusted repeatedly, and the operation of an operator is more convenient.
Furthermore, a gear adjusting tool matching blind hole for inserting and matching a gear adjusting tool is formed in the gear, a fastener adjusting tool matching blind hole for inserting and matching a fastener adjusting tool is formed in the threaded fastener, and the gear adjusting tool matching blind hole and the fastener adjusting tool matching blind hole are identical in size.
Has the advantages that: when adjusting gear and threaded fastener, can share one set of adjustment tool, need not additionally to use other adjustment tools, save the cost.
Further, the electrode head is generally U-shaped, and includes two parallel portions and an intermediate connection portion connected to the two parallel portions, the U-shaped opening of the electrode head faces the support rod, the gear is disposed on one of the parallel portions, and the rack is fitted between the two parallel portions.
Has the advantages that: the electrode tip is the U-shaped, simple structure, forms the installation space that is used for installing gear and rack between two parallel portions of U-shaped electrode tip, has simplified mounting structure.
Further, two opposite side surfaces of the electrode seat are positioned between the two parallel parts and move in a guiding way with the electrode head.
has the advantages that: the electrode holder can realize guiding without arranging an additional guiding structure, and the structure is simple.
further, the adjustable electric spark electrode assembly further comprises a limiting pin which penetrates through the electrode tip and the electrode holder and is used for limiting the movement of the electrode tip, limiting pin through holes for the limiting pin to penetrate through are formed in the electrode tip and the electrode holder, and the limiting pin through hole in at least one of the electrode tip and the electrode holder is a long hole.
has the advantages that: the spacing pin plays certain limiting displacement to the removal of electrode tip, can avoid gear adjusting tool excessively to adjust the electrode tip, and the spacing pin can be taken on electrode tip and electrode holder simultaneously, need not to take off when adjusting the electrode tip, has guaranteed the integrality of adjustable electric spark electrode subassembly and the convenience of adjustment.
Drawings
FIG. 1 is a cross-sectional view of a prior art housing workpiece requiring the machining of a bore wall slot;
FIG. 2 is a schematic view of the hole in FIG. 1 at a location where a hole wall is to be machined;
FIG. 3 is a schematic illustration of the processing of the cell wall trench of FIG. 2 using scenario A;
FIG. 4 is a schematic illustration of the processing of the cell wall trench of FIG. 2, taken as option B;
FIG. 5 is a schematic view of an adjustable spark electrode assembly according to the present invention;
3 FIG. 3 6 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 5 3; 3
FIG. 7 is a cross-sectional view B-B of FIG. 5;
FIG. 8 is a cross-sectional view C-C of FIG. 5;
Figure 9 is a front cross-sectional view of the electrode head of figure 5;
Figure 10 is a top view of the electrode head of figure 5;
figure 11 is a front cross-sectional view of the electrode holder of figure 5;
figure 12 is a top view of the electrode holder of figure 5;
FIG. 13 is a half-sectional view of the binding screw of FIG. 5;
FIG. 14 is a half-sectional view of the gear assembly of FIG. 5;
FIG. 15 is a half-sectional view of the guide block of FIG. 5;
FIG. 16 is a top view of the guide block of FIG. 5;
FIG. 17 is a schematic view illustrating a structure of an adjustment rod used in the adjustable spark electrode assembly according to the present invention;
Fig. 18 is a schematic view of a wrench used with the adjustment lever of fig. 17.
Description of reference numerals: 1-electrode head, 2-electrode holder, 3-gear, 4-rack, 5-fastening screw, 6-support rod, 7-guide block, 8-middle connection part, 9-parallel part, 10-cylindrical pin, 11-long hole, 12-limit pin, 13-gear adjusting tool matching blind hole, 14-gear adjusting tool guide hole, 15-fastener adjusting tool matching blind hole, 16-fastener adjusting tool guide hole, 17-thread matching hole, 18-connecting rod, 19-support rod jack, 20-pin hole, 21-thread hole, 22-adjusting rod, 23-hexagonal column segment, 24-cylindrical rod segment, 25-support rod through hole, 26-wrench, 27-neck, 101-hole wall groove, 102-first valve opening, 103-second valve opening.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Specific embodiments of the adjustable spark electrode assembly of the present invention;
the adjustable spark electrode assembly is mainly used for machining a hole wall groove in a hole wall of a workpiece, and in the embodiment, the adjustable spark electrode assembly is mainly used for machining the hole wall groove 101 in fig. 2 on the workpiece shown in fig. 1.
the adjustable spark electrode assembly of this embodiment is shown in fig. 5, 6, 7 and 8, and includes an electrode holder 2, an electrode head 1, a guide block 7, and a support rod 6. Wherein, the electrode head 1 is assembled on the electrode seat 2 in a guiding and moving way along the front and back direction in a gear and rack transmission way; the support rod 6 extends in the up-down direction, and has a lower end inserted into the electrode holder 2 and an upper end for connection to an electric discharge machine.
specifically, the electrode tip 1 is structured as shown in fig. 9 and 10, the electrode tip 1 is U-shaped as a whole, the U-shape opens toward the support rod 6, the electrode tip 1 includes two parallel portions 9 arranged in parallel at an interval and an intermediate connection portion 8 connected perpendicularly to the front ends of the two parallel portions 9, the intermediate connection portion 8 is higher than the parallel portions 9, and the inner wall surface of one of the parallel portions 9 is provided with the rack 4 extending in the front-rear direction.
The adjustable spark electrode assembly further comprises a gear assembly disposed between the two parallel portions 9, and the gear assembly has a structure as shown in fig. 14, including a gear 3 for meshing with the rack 4 and a connecting rod 18 vertically connected to the center of the gear 3. The axis of gear 3 extends along upper and lower direction, and connecting rod 18 is the threaded rod that the periphery has the screw thread, and gear 3 top is equipped with and supplies gear adjusting tool to insert to join in marriage and only changes complex regulation structure with gear adjusting tool, adjusts the structure for setting up at gear adjusting tool cooperation blind hole 13 at gear 3 center, and gear adjusting tool cooperation blind hole 13 is the hexagonal hole.
The electrode holder 2 is structured as shown in fig. 11 and 12, the height of the electrode holder 2 is less than that of the intermediate connecting part 8 on the electrode head 1, a threaded hole 21 in threaded fit with the connecting rod 18 is provided on the electrode holder 2, and the connecting rod 18 is screwed in the threaded hole 21 to rotatably fit the gear 3 on the electrode holder 2. At this time, the height of the gear 3 is still smaller than that of the intermediate connecting part 8 on the electrode tip 1, the gear 3 is arranged in parallel with the electrode holder 2 relatively, the gear adjusting tool is inserted into the gear adjusting tool mating blind hole 13 through the gear adjusting tool, the gear adjusting tool is screwed, the mating length of the connecting rod 18 and the threaded hole 21 is adjusted, and simultaneously the driving gear 3 and the rack 4 are in meshing transmission, so that the electrode tip 1 moves in the front-back direction relative to the electrode holder 2. The electrode holder 2 is provided with a supporting rod insertion hole 19 for inserting the supporting rod 6 and two pin holes 20 for positioning and fixing the supporting rod 6, the two pin holes 20 are arranged in parallel and at intervals along the vertical direction, the axes of the two pin holes 20 are perpendicular to the axis of the supporting rod insertion hole 19, the lower end of the supporting rod 6 is inserted into the supporting rod insertion hole 19, and the two cylindrical pins 10 are correspondingly inserted into the two pin holes 20 to fix the supporting rod 18 on the electrode holder 2. The two opposite side surfaces of the electrode holder 2 are positioned between the two parallel parts 9, and the electrode holder 2 and the electrode tip 1 are only used for realizing guide movement matching without arranging an additional guide structure.
The adjustable electric spark electrode assembly further comprises a threaded fastener for fastening the electrode tip 1 and the electrode holder 2, a threaded matching hole 17 matched with the threaded fastener is formed in the electrode holder 2, and the height of the threaded fastener after being matched with the threaded matching hole 17 is smaller than that of the middle connecting part 8. The threaded fastener is provided between the gear 3 and the support rod 6 so that the support rod 6, the threaded fastener, and the gear 3 are arranged in this order from the rear toward the front in the direction in which the electrode tip 1 moves into the bore wall groove when the bore wall groove is machined. In this way, the moving distance of the electrode tip can be adjusted to the maximum extent, and the depth of the groove wall hole can be increased. In this embodiment, the threaded fastener is a fastening screw 5, and the structure of the threaded fastener is as shown in fig. 13, a connecting structure for inserting and fitting a fastener adjusting tool and fitting the fastener adjusting tool in a rotation-stop manner is arranged at the top of the fastening screw 5, the connecting structure is a fastener adjusting tool fitting blind hole 15 arranged at the center of the fastening screw 5, and the fastener adjusting tool fitting blind hole 15 is a hexagonal hole. The electrode holder 2 can be fastened to the electrode head 1 by inserting a fastener adjusting tool into the fastener adjusting tool mating blind hole 15 and screwing the fastener adjusting tool.
In this embodiment, the size of the gear adjusting tool fitting blind hole is the same as that of the fastener adjusting tool fitting blind hole, so that one set of adjusting tool can be shared when the gear and the fastening screw 5 are adjusted, and the cost is saved.
The adjustable spark electrode assembly further includes a guide block 7 fixed to the support rod, the guide block 7 is constructed as shown in fig. 15 and 16, the guide block is provided with a support rod penetration hole 25 through which the support rod passes 6, and the support rod 6 and the guide block 7 are positioned and fixed by a cylindrical pin in a direction perpendicular to an axial direction of the support rod penetration hole 25. The guide block 7 is also provided with a gear adjusting tool guide hole 14 for a gear adjusting tool to penetrate through and coaxial with the gear adjusting tool matching blind hole 13, and the guide block 7 is also provided with a fastener adjusting tool guide hole 16 for a fastener adjusting tool to penetrate through and coaxial with the fastener adjusting tool matching blind hole 15. The gear adjustment tool guide holes 14 and the fastener adjustment tool guide holes 16 are arranged in parallel spaced relation and have the same bore size as the gear adjustment tool mating blind holes 13 and the fastener adjustment tool mating blind holes 15.
the common adjustment tool is shown in fig. 17 as an adjustment tool rod 22, which includes a central cylindrical rod section 24 and hexagonal cylindrical sections 23 located at opposite ends of the cylindrical rod section 24, the hexagonal cylindrical sections 23 having cross-sectional dimensions that are the same as the dimensions of the gear adjustment tool mating blind holes 13 and the fastener adjustment tool mating blind holes 15. When the hexagonal column spanner is used, the hexagonal column spanner is matched with the spanner in the graph 18, the clamping groove 27 matched with the hexagonal column section 23 in a rotation stopping mode is formed in the spanner 26, the hexagonal column section 23 is clamped through the clamping groove, and then the spanner is rotated.
The adjustable electric spark electrode assembly further comprises a limiting pin 12 which is arranged on the electrode tip 1 and the electrode holder 2 in a penetrating mode, the limiting pin 12 is used for limiting the movement of the electrode tip 1, and limiting pin penetrating holes for the limiting pin 12 to penetrate are formed in the electrode tip 1 and the electrode holder 2. The stopper pin penetration hole of the electrode tip 1 is a long hole 11 provided in the other parallel portion of the electrode tip to extend in the front-rear direction, and the length of the long hole 11 in the front-rear direction is the farthest distance by which the electrode tip moves in the front-rear direction. When the electrode tip is worn, the elongated slot can be polished to compensate for the movement of the electrode tip.
before the hole wall groove is machined in the hole to be machined, the components are assembled, and the assembled components are integrally inserted into the hole to be machined. For the hole to be processed with small hole opening and large inner space, the adjustable electric spark electrode assembly is integrally inserted into the hole to be processed, the adjustable electric spark electrode assembly can be simultaneously inserted into the fastener adjusting tool guide hole 16 and the fastener adjusting tool matching blind hole 15 through the adjusting rod 22, the adjusting rod 22 is rotated by the wrench 26 to release the fastening between the electrode tip 1 and the electrode holder 2, then the adjusting rod 22 is pulled out and penetrates into the gear adjusting tool guide hole 14 and the gear adjusting tool matching blind hole 13, the adjusting rod 22 is rotated by the wrench 26 to drive the gear rack to engage and drive, the electrode tip is driven to extend forwards, after the moving length of the electrode tip is adjusted, the adjusting rod 22 is used to adjust the fastening screw 5 to fasten the electrode tip and the electrode holder, finally the upper end of the supporting rod 6 is connected with the chuck of the electric spark machine, the electric spark operation can, the adjustable spark electrode assembly can be taken out. In this case, the electrode head can be adjusted directly in the hole to be machined to the extreme position of its movement.
For the hole to be processed with the same axial diameter, the electrode tip is withdrawn after being processed for a certain depth by the electrode tip, then the gear is adjusted by the adjusting rod 22, so that the electrode tip moves for a certain distance, and after the adjustment of the electrode tip is completed, the electrode tip is fastened by the fastening screw, and then the electric spark processing is continued. This process can be repeated until the desired cell wall groove is machined. This applies to the case in which the electrode head cannot be adjusted to its extreme position of movement in the hole to be machined in one go.
In any case, the adjustable electric spark electrode assembly can process a hole wall groove with larger depth, has a large application range, ensures the rigidity of the electrode tip and improves the processing efficiency.
In the embodiment, the guide block is arranged, so that the adjusting rod can be conveniently inserted into the gear adjusting tool matching blind hole or the fastener adjusting tool matching blind hole at one time; in other embodiments, the guide block may not be provided, and at this time, the adjusting rod may be directly inserted into the gear adjusting tool fitting blind hole or the fastener adjusting tool fitting blind hole by a worker, and since the electrode tip and the electrode holder are located in the hole to be machined at this time, the observation is not convenient, and the adjusting rod needs to be adjusted manually and repeatedly.
In the embodiment, the top of the gear is provided with the gear adjusting tool matching blind hole, and the top of the fastening screw is provided with the fastener adjusting tool matching blind hole, so that the gear and the fastening screw can be adjusted through the adjusting rod; in other embodiments, the gear adjusting tool matching blind hole can be arranged only at the top of the gear, and the fastener adjusting tool matching blind hole is not arranged at the top of the fastening screw; or in other embodiments, only the top of the fastening screw is provided with a fastener adjusting tool matching blind hole, and the top of the gear is not provided with a gear adjusting tool matching blind hole; alternatively, in other embodiments, the gear and the fastening screw may be adjusted in other forms, for example, a hexagonal column is disposed on the top of the gear, a hexagonal column is also disposed on the top of the fastening screw, and the adjusting rod may have a structure that one end has a hexagonal hole matched with the hexagonal column and the other end has a hexagonal column matched with the wrench.
In the above embodiments, the heights of the electrode holder, the gear and the threaded fastener are all smaller than the height of the highest position of the electrode head so as to prevent interference with the hole wall of the hole to be processed during processing; or in other embodiments, the heights of the electrode holder, gear, and threaded fastener are each equal to the height of the electrode head at the highest position.
In the above embodiments, the support rod, the threaded fastener, and the gear are sequentially arranged from back to front in the moving direction of the electrode tip when the hole wall groove is machined, so as to maximally adjust the moving distance of the electrode tip, in other embodiments, the arrangement positions of the support rod, the threaded fastener, and the gear may be adjusted, for example, the positions of the gear and the threaded fastener may be interchanged, and the movable distance of the electrode tip may be correspondingly reduced.
In the above embodiment, the gear is rotatably mounted on the electrode holder through the connecting rod connected to the lower portion of the gear, and in other embodiments, a protrusion extending in the up-down direction may be provided on the electrode holder to rotatably mount the gear and the protrusion.
in the above-mentioned embodiment, the electrode tip is the U-shaped, and the electrode holder relies on its both sides face of carrying on the back can realize moving with the relative direction of electrode tip, in other embodiments, also can set up the spout in the bottom of electrode tip, set up on the electrode holder with spout sliding fit's arch, rotate at the gear and drive electrode tip removal in-process, realize the direction removal between them through protruding cooperation with the spout.
In the above embodiments, the electrode tip is U-shaped, the gear is disposed between two parallel portions of the U-shaped electrode tip, and the gear is disposed on the inner side wall of one of the parallel portions, in other embodiments, racks may be disposed on both parallel portions of the electrode tip; alternatively, in other embodiments, the electrode tip may also be L-shaped or T-shaped, in which case the toothed rack is provided on the portion of the electrode tip extending in the direction of movement thereof.
In the above embodiment, the movement of the electrode tip is limited by the limit pin, in other embodiments, the limit pin may not be provided, and correspondingly, the electrode tip and the electrode holder may not be provided with the limit pin through hole, and the movement distance of the electrode tip is controlled by controlling the number of turns of the gear rotation.
In the above embodiment, the size of the gear adjusting tool fitting blind hole is the same as that of the fastener adjusting tool fitting blind hole, and in other embodiments, the size of the gear adjusting tool fitting blind hole and that of the fastener adjusting tool fitting blind hole may be different, and at this time, two different tool adjusting rods are required.
In the above embodiments, the threaded fastener is a fastening screw, and in other embodiments, the threaded fastener may also be a fastening bolt.
Claims (10)
1. adjustable electric spark electrode subassembly, its characterized in that includes:
an electrode holder;
The supporting rod extends along the up-down direction, the lower end of the supporting rod is fixed on the electrode seat, and the upper end of the supporting rod is used for being connected with an electric spark machine tool and being inserted into a hole to be machined;
The electrode head is guided to move and assembled on the electrode seat along the direction vertical to the extension direction of the supporting rod and is used for machining a hole wall groove on the hole wall of the hole to be machined along the direction vertical to the central axis of the hole to be machined;
The electrode head is provided with a rack extending along the direction of guiding movement, the electrode seat is rotatably assembled with a gear in meshing transmission with the rack, the axis of the gear is parallel to the axis of the supporting rod, and the top of the gear is provided with an adjusting structure which is used for being inserted into a gear adjusting tool inserted into a hole to be processed and is in rotation stopping fit with the gear adjusting tool so as to drive the gear to rotate by screwing the gear adjusting tool;
and the top of the threaded fastener is provided with a connecting structure for inserting and matching a fastener adjusting tool and stopping rotation and matching the fastener adjusting tool so as to enable the electrode tip to be fastened with the electrode holder by screwing the fastener adjusting tool.
2. The adjustable electric spark electrode assembly as claimed in claim 1, wherein the heights of the electrode holder, the gear and the threaded fastener are all less than the height of the electrode head at the highest position.
3. The adjustable electric spark electrode assembly as claimed in claim 1, wherein the support rod, the threaded fastener, and the gear are sequentially arranged from back to front in a direction in which the electrode tip moves toward the wall groove of the hole when the wall groove of the hole is machined.
4. the adjustable electric spark electrode assembly as claimed in any one of claims 1 to 3, wherein a connecting rod is vertically connected to the bottom of the gear, and the connecting rod is rotatably assembled on the electrode holder.
5. The adjustable electric spark electrode assembly as claimed in any one of claims 1 to 3, wherein the gear is provided with a gear adjustment tool engaging blind hole for engagement of a gear adjustment tool, the gear adjustment tool engaging blind hole forming the adjustment structure, and/or the threaded fastener is provided with a fastener adjustment tool engaging blind hole for engagement of a fastener adjustment tool, the fastener adjustment tool engaging blind hole forming the connection structure.
6. the adjustable electric spark electrode assembly as claimed in claim 5, further comprising a guide block fixed to the support rod, wherein the guide block is provided with a gear adjusting tool guide hole for the gear adjusting tool to penetrate therethrough and coaxial with the gear adjusting tool fitting blind hole, and/or the guide block is provided with a fastener adjusting tool guide hole for the fastener adjusting tool to penetrate therethrough and coaxial with the fastener adjusting tool fitting blind hole.
7. The adjustable electric spark electrode assembly as claimed in claim 5, wherein the gear is provided with a gear adjustment tool engaging blind hole for insertion of a gear adjustment tool, the threaded fastener is provided with a fastener adjustment tool engaging blind hole for insertion of a fastener adjustment tool, and the gear adjustment tool engaging blind hole is the same size as the fastener adjustment tool engaging blind hole.
8. The adjustable electric spark electrode assembly as claimed in any one of claims 1 to 3, wherein the electrode taps have a U-shape as a whole, including two parallel portions and an intermediate connection portion connected to the two parallel portions, the U-shape of the electrode taps being opened toward the support rod, the gear being provided at one of the parallel portions, and the rack gear being fitted between the two parallel portions.
9. The adjustable electric spark electrode assembly as claimed in claim 8, wherein the two opposite sides of the electrode holder are disposed between the parallel portions and are guided to move with respect to the electrode tip.
10. the adjustable electric spark electrode assembly as claimed in any one of claims 1 to 3, further comprising a stopper pin passing through both the electrode tip and the electrode holder for limiting the movement of the electrode tip, wherein stopper pin through-holes for the stopper pin to pass are formed in both the electrode tip and the electrode holder, and the stopper pin through-holes formed in at least one of the electrode tip and the electrode holder are long holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750118.9A CN110560803A (en) | 2019-08-14 | 2019-08-14 | Adjustable electric spark electrode assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750118.9A CN110560803A (en) | 2019-08-14 | 2019-08-14 | Adjustable electric spark electrode assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111299730A (en) * | 2020-04-01 | 2020-06-19 | 江西理工大学 | U-shaped wire electrode electrolytic milling machining method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111299730A (en) * | 2020-04-01 | 2020-06-19 | 江西理工大学 | U-shaped wire electrode electrolytic milling machining method |
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