CN114570979A - Drilling device for balance shaft positioning hole - Google Patents
Drilling device for balance shaft positioning hole Download PDFInfo
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- CN114570979A CN114570979A CN202210477583.1A CN202210477583A CN114570979A CN 114570979 A CN114570979 A CN 114570979A CN 202210477583 A CN202210477583 A CN 202210477583A CN 114570979 A CN114570979 A CN 114570979A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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Abstract
The invention discloses a drilling device for a balance shaft positioning hole, and relates to the technical field of drilling devices. The drilling device comprises a mounting frame, a balance shaft, a rotating assembly and a drilling assembly; the rotating assembly is in rotating fit with the mounting rack; the drilling assembly is in sliding fit with the rotating assembly; the limiting rail is matched with a pre-drilling component in a sliding way; the insertion pipe is inserted and matched with the pre-drilling piece; one end of the connecting rod is fixedly connected with an arc-shaped sliding block; the circumferential side surface of the arc-shaped sliding block is fixedly connected with an arc-shaped rail; the arc-shaped sliding block is in running fit with the annular channel; the arc rail is matched with the annular limiting groove in a rotating way. According to the invention, the graphite rod in the pre-drilled part is perforated through the drilling assembly, so that the situation that the balance shaft is damaged due to slipping caused by the fact that the drill bit directly acts on the curved surface on the periphery of the balance shaft is avoided, and the defective rate of the positioning hole of the balance shaft is reduced; and injecting gas into the annular gas cavity to drive the piston rod to move, so that the contact pin is inserted into the annular rubber plate, and the second hydraulic cylinder is started to drive the plug-in ring to tightly abut against the driven gear, thereby playing a braking role on the annular gear strip.
Description
Technical Field
The invention belongs to the technical field of drilling devices, and particularly relates to a drilling device for a balance shaft positioning hole.
Background
In machining, a part is often drilled, and a drill bit is used to machine a hole in a solid material, namely drilling the hole. The hole machining of various parts is completed by a drilling machine and a drilling tool (a drill bit, a reamer, and the like) by a bench worker except for a part by a lathe, a boring machine, a milling machine, and the like. When drilling holes on a drilling machine, generally, a drill bit needs to complete two movements simultaneously; primary motion, i.e. the rotational motion of the drill bit about an axis (cutting motion); the auxiliary movement is a linear movement of the drill in the axial direction against the workpiece (feed movement). The drilling device for the balance shaft positioning hole in the prior art already discloses an installation frame, a balance shaft, a rotating assembly and a drilling assembly, wherein the balance shaft and the installation frame are coaxially arranged, the rotating assembly is in running fit with the installation frame, and the drilling assembly is in sliding fit with the rotating assembly.
In the prior art, when a positioning hole is processed on a balance shaft, a drill bit is mostly directly aligned to the clamped and fixed balance shaft, and the drill bit is directly aligned to a curved surface processing position due to the cylindrical balance shaft, so that the drill bit is easy to slip on the curved surface during drilling, and the balance shaft is damaged; meanwhile, when the positioning holes in different positions of the balance shaft are formed in multiple positions in the prior art, most of the balance shafts are fixedly clamped and replaced in the positions, the balance shafts need to be clamped and fixed repeatedly and loosened for adjustment, the process is complex, and the workload is high.
Disclosure of Invention
The invention aims to provide a drilling device for a positioning hole of a balance shaft, wherein a rotating assembly is driven to rotate around a connecting sleeve by rotating an annular gear rack, a sliding sleeve below the rotating assembly is positioned right above a drilling position, a pre-drilling part is placed in the sliding sleeve above the pre-drilling part, and when an insertion rod slides to the port position of an insertion pipe, the insertion rod is driven to be inserted into the insertion pipe under the action of an extrusion spring to realize the fixation of the pre-drilling part, and at the moment, the curved surface end of a graphite rod is propped against the drilling position of the balance shaft; injecting gas into the annular gas cavity to drive the piston rod to move, so that the contact pin is inserted into the annular rubber plate to brake the annular gear strip; the second hydraulic cylinder is started to drive the inserting ring to tightly abut against the driven gear, and further braking effect is achieved on the ring gear strip.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a drilling device for a balance shaft positioning hole, which comprises an installation frame, a balance shaft, a rotating assembly and a drilling assembly, wherein the installation frame is provided with a positioning hole; the balance shaft and the mounting frame are coaxially arranged; the rotating assembly is in rotating fit with the mounting rack; the drilling assembly is in sliding fit with the rotating assembly; the rotating assembly comprises a connecting sleeve; sliding sleeves symmetrically penetrate through the peripheral side of the connecting sleeve; the inner wall of the sliding sleeve is fixedly connected with a limiting rail; the limiting rail is in sliding fit with a pre-drilling component; the inner wall of the sliding sleeve is symmetrically provided with inserting pipes in a penetrating way; the insertion pipe is inserted and matched with the pre-drilling piece;
the mounting rack comprises positioning sleeves, and connecting rods are fixedly connected to the side surfaces of the positioning sleeves in a circumferential array distribution; connecting rod one end fixedly connected with arc slider, with axle center normal running fit between arc slider and the connecting sleeve 5.
Further, the mounting rack further comprises a bearing plate; the surface of the bearing plate is symmetrically and fixedly connected with L-shaped bearing rods, and the positioning sleeve is fixedly connected between the two L-shaped bearing rods; the side surface of the connecting sleeve is provided with an annular groove; the inner wall of the annular groove channel is provided with an annular limiting groove; the circumferential side surface of the arc-shaped sliding block is fixedly connected with an arc-shaped rail; the arc-shaped sliding block is in running fit with the annular groove channel; the arc-shaped rail is in running fit with the annular limiting groove; the pre-drilled part comprises a fixing part and a graphite rod; the fixing piece comprises a fixing ring; the peripheral side surface of the fixed ring is provided with a limit groove; the limiting rail is in sliding fit with the limiting groove; mounting grooves are symmetrically formed in the peripheral side surface of the fixing ring; the mounting groove is in sliding fit with the insertion rod; an extrusion spring is fixedly connected between the insertion rod and the mounting groove; the insertion rod is in insertion fit with the insertion pipe; the sliding sleeve and one end of the graphite rod are both arranged in a curved surface mode.
Furthermore, the two side surfaces of the fixing ring are symmetrically and fixedly connected with connecting ropes; one end of the connecting rope is fixedly connected with an arc-shaped connecting block; an elastic clamping ring is fixedly connected between the two arc-shaped connecting blocks; two groups of annular clamping grooves are formed in the circumferential side face of the graphite rod from top to bottom; the elastic clamping ring is clamped and matched with the annular clamping groove; the surface of the fixing ring is fixedly connected with a C-shaped plate; the C-shaped plate is in plug fit with the sliding sleeve.
Furthermore, the circumferential side surface of the connecting sleeve is fixedly connected with an installation frame at the position of a sliding sleeve; a baffle is fixedly connected between the inner walls of the mounting frames; the surface of the baffle is provided with a through hole; one end of the mounting frame is fixedly connected with an annular handle; sliding channels are symmetrically formed in the two inner walls of the mounting frame; the drilling assembly is in sliding fit with the sliding channel.
Further, the drilling assembly includes a first hydraulic cylinder; the first hydraulic cylinder fixing part is fixedly arranged at the top in the mounting frame; the telescopic end of the first hydraulic cylinder is in sliding fit with the through hole; the telescopic end of the first hydraulic cylinder is fixedly connected with the mounting shell; sliding rails are symmetrically and fixedly connected to two side faces of the mounting shell; the sliding rail is in sliding fit with the sliding channel; a drilling motor is fixedly arranged in the mounting shell; the output end of the drilling motor is fixedly connected with a drill rod.
Furthermore, the peripheral side surface of the connecting sleeve is symmetrically and fixedly connected with an L-shaped mounting rod; an annular gear rack is fixedly connected between the two L-shaped mounting rods; an annular rubber plate is bonded on the inner wall of the annular gear strip; the inner wall of the annular rubber plate is provided with anti-skid lines.
Furthermore, an annular air chamber is fixedly connected to the peripheral side surface of the positioning sleeve; the circumferential side surface of the annular gas chamber is provided with connecting pipes which are distributed in a circumferential array and penetrate through; the connecting pipe is in sliding fit with a piston rod; a return spring is fixedly connected between the annular air chamber and the piston rod; the circumferential side surface of the annular air chamber is provided with an air inlet hose; one end of the piston rod is fixedly connected with an arc-shaped extrusion plate; the side surface of the arc-shaped extrusion plate is circumferentially distributed and fixedly connected with contact pins in an array manner.
Furthermore, a positioning groove is formed in the surface of the bearing plate; fixing grooves are symmetrically formed between the two inner walls of the positioning groove; the inner bottom surface of the positioning groove is symmetrically and fixedly connected with a mounting plate; a connecting shaft is fixedly connected between the two mounting plates; the peripheral side surface of the connecting shaft is positioned right below the annular gear strip and is matched with a driven gear in a rotating way; the driven gear is meshed with the ring gear strip.
Further, the positioning groove is matched with an auxiliary braking piece in a sliding mode; the auxiliary brake member comprises a sled; the two side surfaces of the sliding plate are symmetrically and fixedly connected with fixing blocks; the fixed block is in sliding fit with the fixed groove; the surface of the sliding plate is fixedly connected with a fixing plate; a second hydraulic cylinder is fixedly connected between the fixing plate and the mounting plate; the surface of the fixed plate is provided with a sliding hole; the sliding hole is in sliding fit with the connecting shaft; the side surface of the fixed plate is fixedly connected with an inserting ring; the side surface of the driven gear is provided with an inserting groove; the inserting ring is matched with the inserting groove in an inserting mode.
The invention has the following beneficial effects:
1. according to the invention, the balance shaft coaxially penetrates through the positioning sleeve and the connecting sleeve, two ends of the balance shaft are clamped and fixed through the external clamping device, the whole device is moved along the balance shaft, the rotating annular gear strip drives the rotating assembly to rotate around the connecting sleeve, the sliding sleeve which rotates to the lower part is positioned right above the drilling position, the positioning hole is formed at any position of the balance shaft, the traditional repeated clamping, fixing and loosening adjustment of the balance shaft is replaced, the operation is simple, and the workload is reduced.
2. According to the invention, a pre-drilling part is placed in the upper sliding sleeve, when the insertion rod slides to the port position of the insertion pipe, the insertion rod is driven to be inserted into the insertion pipe under the action of the extrusion spring, so that the pre-drilling part is fixed, and at the moment, the curved surface end of the graphite rod is propped against the drilling position of the balance shaft; when the pre-drilled hole part needs to be removed, the plugging rods at two positions only need to be inwards extruded and can be pulled out; the pre-drilling piece is convenient to mount and dismount.
3. According to the invention, the graphite rod in the positioned pre-drilled part is positioned and holed through the drilling assembly, so that the situation that the balance shaft is damaged due to slipping caused by the fact that the drill bit directly acts on the curved surface on the periphery of the balance shaft is avoided, and the defective rate of the positioning hole of the balance shaft is reduced.
4. According to the invention, the piston rod is driven to move by injecting gas into the annular gas cavity, so that the contact pin is inserted into the annular rubber plate to brake the annular gear strip, and the drilling precision error caused by the shaking of the rotating assembly in the drilling process is effectively prevented.
5. According to the invention, the second hydraulic cylinder is started to drive the inserting ring to tightly abut against the driven gear, so that a further braking effect is exerted on the ring gear strip, and the drilling precision error caused by the shaking of the rotating assembly in the drilling process is effectively prevented.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a drilling device for balance shaft positioning holes according to the present invention.
Fig. 2 is a schematic structural diagram of the mounting bracket of the present invention.
Fig. 3 is an enlarged view of the structure at a in fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of the rotating assembly of the present invention.
Fig. 5 is a schematic view of another angle structure of the rotating assembly of the present invention.
Fig. 6 is an enlarged view of the structure at B of fig. 5 according to the present invention.
Fig. 7 is a schematic structural view of the drilling assembly of the present invention.
FIG. 8 is a schematic view of the structure of the pre-drilled member of the present invention.
Fig. 9 is a schematic structural view of the fixing member of the present invention.
Fig. 10 is a schematic view of the structure of a graphite rod of the present invention.
FIG. 11 is a schematic view showing the construction of an auxiliary braking member according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a mounting frame, 2-a balance shaft, 3-a rotating assembly, 4-a drilling assembly, 5-a connecting sleeve, 6-a sliding sleeve, 7-a limiting rail, 8-a splicing pipe, 9-an annular groove channel, 10-an annular limiting groove, 11-a bearing plate, 12-an L-shaped bearing rod, 13-a positioning sleeve, 14-a connecting rod, 15-an arc-shaped sliding block, 16-an arc-shaped rail, 17-a fixing piece, 18-a graphite rod, 19-a fixing ring, 20-a limiting groove, 21-a mounting groove, 22-a splicing rod, 23-an extrusion spring, 24-a connecting rope, 25-an arc-shaped connecting block, 26-an elastic snap ring, 27-an annular clamping groove, 28-a C-shaped plate, 29-a mounting frame, 30-a baffle plate and 31-a through hole, 32-annular handle, 33-sliding channel, 34-first hydraulic cylinder, 35-mounting shell, 36-sliding rail, 37-drilling motor, 38-drilling rod, 39-annular gear rack, 40-annular rubber plate, 41-annular air chamber, 42-connecting pipe, 43-piston rod, 44-return spring, 45-air inlet hose, 46-arc extrusion plate, 47-inserting pin, 48-positioning groove, 49-fixing groove, 50-mounting plate, 51-connecting shaft, 52-driven gear, 53-auxiliary braking piece, 54-sliding plate, 55-fixing block, 56-fixing plate, 57-second hydraulic cylinder, 58-sliding hole, 59-inserting ring, 60-inserting groove, 61-pre-drilling piece and 62-L-shaped mounting rod.
Detailed Description
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.
Referring to fig. 1 to 11, the present invention is a drilling apparatus for a positioning hole of a balance shaft, including an installation frame 1, a balance shaft 2, a rotation assembly 3 and a drilling assembly 4; the balance shaft 2 and the mounting rack 1 are coaxially arranged; the rotating assembly 3 is in rotating fit with the mounting rack 1; the drilling assembly 4 is in sliding fit with the rotating assembly 3; the rotating assembly 3 comprises a connecting sleeve 5; the peripheral side surface of the connecting sleeve 5 is symmetrically provided with a sliding sleeve 6 in a penetrating way; the inner wall of the sliding sleeve 6 is fixedly connected with a limit rail 7; the limiting rail 7 is in sliding fit with the pre-drilling assembly 4; the inner wall of the sliding sleeve 6 is symmetrically provided with inserting pipes 8 in a penetrating way; the insertion pipe 8 is inserted and matched with the pre-drilling piece 61;
the mounting rack 1 comprises positioning sleeves 13, and connecting rods 14 are fixedly connected to the side surfaces of the positioning sleeves 13 in a circumferential array distribution; one end of the connecting rod 14 is fixedly connected with an arc-shaped sliding block 15, and the arc-shaped sliding block 15 is in coaxial rotation fit with the connecting sleeve 5;
the mounting frame 1 further comprises a bearing plate 11; the surface of the bearing plate 11 is symmetrically and fixedly connected with L-shaped bearing rods 12, and a positioning sleeve 13 is fixedly connected between the two L-shaped bearing rods 12; the side surface of the connecting sleeve 5 is provided with an annular groove 9; the inner wall of the annular groove 9 is provided with an annular limiting groove 10; the peripheral side surface of the arc-shaped sliding block 15 is fixedly connected with an arc-shaped rail 16; the arc-shaped sliding block 15 is in running fit with the annular channel 9; the arc-shaped rail 16 is in running fit with the annular limiting groove 10;
pass locating sleeve 13 and connecting sleeve 5 with the axle center through with balanced axle 2 to it is fixed with balanced axle 2 both ends centre gripping through outside clamping device, along balanced axle 2 removal whole device, it rotates round connecting sleeve 5 to rotate annular rack 39 and drive runner assembly 3, slide sleeve 6 to the below is located the drilling position directly over, the realization carries out seting up of locating hole to balanced axle 2 optional position, replace the tradition to carry out the centre gripping that relapses to balanced axle 2 fixed with loosen the adjustment.
Wherein, the pre-drilling part 61 comprises a fixing part 17 and a graphite rod 18; the fixing member 17 includes a fixing ring 19; the peripheral side surface of the fixed ring 19 is provided with a limit groove 20; the limiting rail 7 is in sliding fit with the limiting groove 20; the peripheral side surface of the fixed ring 19 is symmetrically provided with mounting grooves 21; the mounting groove 21 is in sliding fit with an insertion rod 22; an extrusion spring 23 is fixedly connected between the insertion rod 22 and the mounting groove 21; the insertion rod 22 is inserted and matched with the insertion pipe 8; the sliding sleeve 6 and one end of the graphite rod 18 are both arranged in a curved surface manner;
the pre-drilling piece 61 is placed in the sliding sleeve 6 above, when the inserting rod 22 slides to the port position of the inserting pipe 8, the inserting rod 22 is driven to be inserted into the inserting pipe 8 under the action of the extruding spring 23, the curved surface end of the graphite rod 18 is attached to and abutted against the peripheral side face of the balance shaft 2, the fixing of the pre-drilling piece 61 is realized, and at the moment, the curved surface end of the graphite rod 18 is abutted against the drilling position of the balance shaft 2; when the pre-drilling part 61 needs to be removed, the plugging rods 22 at two positions only need to be pressed inwards to be pulled out; facilitating the installation and removal of the pre-drilled member 61.
Wherein, the two side surfaces of the fixed ring 19 are symmetrically and fixedly connected with connecting ropes 24; one end of the connecting rope 24 is fixedly connected with an arc-shaped connecting block 25; an elastic snap ring 26 is fixedly connected between the two arc-shaped connecting blocks 25; two groups of annular clamping grooves 27 are formed in the circumferential side surface of the graphite rod 18 from top to bottom; the elastic clamping ring 26 is matched with the annular clamping groove 27 in a clamping mode; the surface of the fixed ring 19 is fixedly connected with a C-shaped plate 28; the C-shaped plate 28 is matched with the sliding sleeve 6 in an inserting way;
through inserting graphite rod 18 in solid fixed ring 19, in two ring groove 27 with two elastic clamping ring 26 joint income graphite rod 18, drilling rod 38 is at the feed or move back the sword in-process, and elastic clamping ring 26 plays spacing fixed effect, prevents that drilling rod 38 from at the feed or move back the sword in-process, drives graphite rod 18 and removes, influences the normal clear of drilling.
Wherein, the peripheral side surface of the connecting sleeve 5 is fixedly connected with a mounting frame 29 at the position of a sliding sleeve 6; a baffle 30 is fixedly connected between the inner walls of the mounting frames 29; the surface of the baffle 30 is provided with a through hole 31; one end of the mounting frame 29 is fixedly connected with an annular handle 32; two inner walls of the mounting frame 29 are symmetrically provided with sliding channels 33; the drilling assembly 4 is in sliding fit with the sliding channel 33;
the drilling assembly 4 comprises a first hydraulic cylinder 34; the fixed part of the first hydraulic cylinder 34 is fixedly arranged at the top in the mounting frame 29; the telescopic end of the first hydraulic cylinder 34 is in sliding fit with the through hole 31; the telescopic end of the first hydraulic cylinder 34 is fixedly connected with a mounting shell 35; two side surfaces of the mounting shell 35 are symmetrically and fixedly connected with sliding rails 36; the slide rail 36 is in sliding fit with the slide channel 33; a drilling motor 37 is fixedly arranged in the mounting shell 35; the output end of the drilling motor 37 is fixedly connected with a drill rod 38;
the pre-drilling of the graphite rod 18 is realized by starting the first hydraulic cylinder 34 to drive the drilling motor 37 to move along the sliding channel 33, and simultaneously starting the drilling motor 37 to drive the drill rod 38 to rotate.
Wherein, the circumferential side of the connecting sleeve 5 is symmetrically and fixedly connected with an L-shaped mounting rod 62; an annular gear rack 39 is fixedly connected between the two L-shaped mounting rods 62; an annular rubber plate 40 is bonded on the inner wall of the annular gear strip 39; the inner wall of the annular rubber plate 40 is provided with anti-skid grains;
the circumferential side surface of the positioning sleeve 13 is fixedly connected with an annular air chamber 41; the circumferential side surface of the annular gas chamber 41 is provided with connecting pipes 42 which are distributed in a circumferential array and penetrate; the connecting tube 42 is slidably fitted with a piston rod 43; a return spring 44 is fixedly connected between the annular air chamber 41 and the piston rod 43; an air inlet hose 45 is arranged on the circumferential side surface of the annular air chamber 41; one end of the piston rod 43 is fixedly connected with an arc-shaped extrusion plate 46; the circumferential side surface of the arc-shaped extrusion plate 46 is circumferentially distributed and fixedly connected with contact pins 47 in an array manner;
the air is injected into the annular air chamber 41 by the external air pump, and the air pushes the piston rod 43 to move along the connecting pipe 42, so that the pins 47 on the arc-shaped pressing plate 46 are inserted into the annular rubber plate 40, and the annular gear rack 39 is braked.
Wherein, the surface of the bearing plate 11 is provided with a positioning groove 48; fixing grooves 49 are symmetrically arranged between the two inner walls of the positioning groove 48; the inner bottom surface of the positioning groove 48 is symmetrically and fixedly connected with a mounting plate 50; a connecting shaft 51 is fixedly connected between the two mounting plates 50; the peripheral side surface of the connecting shaft 51 is positioned right below the annular gear strip 39 and is matched with a driven gear 52 in a rotating way; the driven gear 52 is in meshing engagement with the annular gear rack 39;
the positioning groove 48 is matched with an auxiliary braking piece 53 in a sliding way; the auxiliary brake 53 includes a slide plate 54; the two side surfaces of the sliding plate 54 are symmetrically and fixedly connected with fixing blocks 55; the fixing block 55 is in sliding fit with the fixing groove 49; the surface of the sliding plate 54 is fixedly connected with a fixing plate 56; a second hydraulic cylinder 57 is fixedly connected between the fixing plate 56 and the mounting plate 50; the surface of the fixed plate 56 is provided with a sliding hole 58; the slide hole 58 is in sliding fit with the connecting shaft 51; the side surface of the fixing plate 56 is fixedly connected with an inserting ring 59; the side surface of the driven gear 52 is provided with an inserting groove 60; the plug ring 59 is in plug fit with the plug groove 60;
by activating the second hydraulic cylinder 57, the sliding plate 54 is driven to slide along the positioning slot 48, and the inserting ring 59 on the auxiliary braking member 53 is inserted into the inserting groove 60, the second hydraulic cylinder 57 is continuously activated, so that the inserting ring 59 compresses the driven gear 52 to prevent the driven gear 52 from rotating, i.e. the annular gear rack 39 is further assisted in braking.
The specific working principle of the invention is as follows:
the balance shaft 2 coaxially penetrates through the positioning sleeve 13 and the connecting sleeve 5, two ends of the balance shaft 2 are clamped and fixed through an external clamping device, the whole device is moved along the balance shaft 2, the rotating assembly 3 is driven to rotate around the connecting sleeve 5 by rotating the annular gear rack 39, and the sliding sleeve 6 below is positioned right above a drilling position, so that positioning holes are formed in any position of the balance shaft 2; the pre-drilling piece 61 is placed in the sliding sleeve 6 above, when the insertion rod 22 slides to the port position of the insertion pipe 8, the insertion rod 22 is driven to be inserted into the insertion pipe 8 under the action of the extrusion spring 23, the curved surface end of the graphite rod 18 is attached to and abutted against the circumferential side surface of the balance shaft 2, the fixation of the pre-drilling piece 61 is realized, and at the moment, the curved surface end of the graphite rod 18 is abutted against the drilling position of the balance shaft 2; when the pre-drilling part 61 needs to be removed, the plugging rods 22 at two positions only need to be pressed inwards to be pulled out; the pre-drilling piece 61 is convenient to mount and dismount; injecting gas into the annular gas chamber 41 by an external air pump, wherein the gas pushes the piston rod 43 to move along the connecting pipe 42, so that the contact pin 47 on the arc-shaped extrusion plate 46 is inserted into the annular rubber plate 40 to brake the annular gear rack 39; the sliding plate 54 is driven to slide along the positioning groove 48 by activating the second hydraulic cylinder 57, until the inserting ring 59 on the auxiliary braking member 53 is inserted into the inserting groove 60, the second hydraulic cylinder 57 is continuously activated, so that the inserting ring 59 compresses the driven gear 52 to prevent the driven gear 52 from rotating, and the annular gear rack 39 is further assisted in braking; the first hydraulic cylinder 34 is started to drive the drilling motor 37 to move along the sliding channel 33, the drilling motor 37 is started to drive the drill rod 38 to rotate, pre-drilling of the graphite rod 18 is achieved, and then the drill rod 38 drills the balance shaft 2 in the same position.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A drilling device for a balance shaft positioning hole comprises a mounting frame (1), a balance shaft (2), a rotating assembly (3) and a drilling assembly (4); the balance shaft (2) and the mounting rack (1) are coaxially arranged; the rotating assembly (3) is in rotating fit with the mounting rack (1); the drilling assembly (4) is in sliding fit with the rotating assembly (3);
the method is characterized in that:
the rotating assembly (3) comprises a connecting sleeve (5); the peripheral side surface of the connecting sleeve (5) is symmetrically provided with a sliding sleeve (6) in a penetrating way; the inner wall of the sliding sleeve (6) is fixedly connected with a limiting rail (7); the limiting rail (7) is in sliding fit with the pre-drilling assembly (4); the inner wall of the sliding sleeve (6) is symmetrically provided with inserting pipes (8) in a penetrating way; the insertion pipe (8) is inserted and matched with the pre-drilling part (61);
the mounting rack (1) comprises positioning sleeves (13), and connecting rods (14) are fixedly connected to the side surfaces of the positioning sleeves (13) in a circumferential array distribution; connecting rod (14) one end fixedly connected with arc slider (15), with axle center normal running fit between arc slider (15) and the connecting sleeve 5.
2. A drilling device for balance shaft locating holes according to claim 1, characterized in that the mounting frame (1) further comprises a bearing plate (11); the surface of the bearing plate (11) is symmetrically and fixedly connected with L-shaped bearing rods (12), and the positioning sleeve (13) is fixedly connected between the two L-shaped bearing rods (12);
the side surface of the connecting sleeve (5) is provided with an annular groove (9); the inner wall of the annular channel (9) is provided with an annular limiting groove (10); the peripheral side surface of the arc-shaped sliding block (15) is fixedly connected with an arc-shaped rail (16); the arc-shaped sliding block (15) is in running fit with the annular groove channel (9); the arc-shaped rail (16) is in running fit with the annular limiting groove (10);
the pre-drilling part (61) comprises a fixing part (17) and a graphite rod (18); the fixing member (17) includes a fixing ring (19); a limiting groove (20) is formed in the peripheral side face of the fixing ring (19); the limiting rail (7) is in sliding fit with the limiting groove (20); the peripheral side surface of the fixed ring (19) is symmetrically provided with mounting grooves (21); the mounting groove (21) is in sliding fit with an insertion rod (22); an extrusion spring (23) is fixedly connected between the insertion rod (22) and the mounting groove (21); the insertion rod (22) is in insertion fit with the insertion pipe (8); the sliding sleeve (6) and one end of the graphite rod (18) are both arranged in a curved surface mode.
3. The drilling device for the positioning hole of the balance shaft is characterized in that two side surfaces of the fixing ring (19) are symmetrically and fixedly connected with connecting ropes (24); one end of the connecting rope (24) is fixedly connected with an arc-shaped connecting block (25); an elastic snap ring (26) is fixedly connected between the two arc-shaped connecting blocks (25); two groups of annular clamping grooves (27) are formed in the circumferential side surface of the graphite rod (18) from top to bottom; the elastic clamping ring (26) is matched with the annular clamping groove (27) in a clamping manner; the surface of the fixing ring (19) is fixedly connected with a C-shaped plate (28); the C-shaped plate (28) is in plug fit with the sliding sleeve (6).
4. A drilling device for positioning holes of balance shafts according to claim 1, characterized in that the circumferential side of the connecting sleeve (5) is fixedly connected with a mounting frame (29) at the position of a sliding sleeve (6); a baffle (30) is fixedly connected between the inner walls of the mounting frames (29); the surface of the baffle (30) is provided with a through hole (31); one end of the mounting frame (29) is fixedly connected with an annular handle (32); two inner walls of the mounting frame (29) are symmetrically provided with sliding channels (33); the drilling assembly (4) is in sliding fit with the sliding channel (33).
5. A drilling device for balance shaft locating holes according to claim 4, characterized in that the drilling assembly (4) comprises a first hydraulic cylinder (34); the fixed part of the first hydraulic cylinder (34) is fixedly arranged at the top in the mounting frame (29); the telescopic end of the first hydraulic cylinder (34) is in sliding fit with the through hole (31); the telescopic end of the first hydraulic cylinder (34) is fixedly connected with a mounting shell (35); the two side surfaces of the mounting shell (35) are symmetrically and fixedly connected with sliding rails (36); the sliding rail (36) is in sliding fit with the sliding channel (33); a drilling motor (37) is fixedly arranged in the mounting shell (35); and a drill rod (38) is fixedly connected to the output end of the drilling motor (37).
6. The drilling device for positioning holes of balance shafts as claimed in claim 2, wherein an L-shaped mounting rod (62) is fixedly connected with the circumferential side of the connecting sleeve (5) symmetrically; an annular gear rack (39) is fixedly connected between the two L-shaped mounting rods (62); an annular rubber plate (40) is bonded on the inner wall of the annular gear strip (39); the inner wall of the annular rubber plate (40) is provided with anti-skid grains.
7. A drilling device for balance shaft location holes according to claim 1, characterized in that an annular air chamber (41) is fixedly connected to the peripheral side of the location sleeve (13); the circumferential side surface of the annular gas chamber (41) is provided with connecting pipes (42) in a circumferential array distribution and penetration manner; the connecting pipe (42) is in sliding fit with a piston rod (43); a return spring (44) is fixedly connected between the annular air chamber (41) and the piston rod (43); an air inlet hose (45) is arranged on the peripheral side surface of the annular air chamber (41); one end of the piston rod (43) is fixedly connected with an arc-shaped extrusion plate (46); the circumferential side surface of the arc-shaped extrusion plate (46) is circumferentially distributed and fixedly connected with contact pins (47) in an array manner.
8. A drilling device for positioning holes of balance shafts according to claim 6, characterized in that the surface of the bearing plate (11) is provided with positioning grooves (48); fixing grooves (49) are symmetrically formed between the two inner walls of the positioning groove (48); the inner bottom surface of the positioning groove (48) is symmetrically and fixedly connected with a mounting plate (50); a connecting shaft (51) is fixedly connected between the two mounting plates (50); the peripheral side surface of the connecting shaft (51) is positioned right below the annular gear strip (39) and is matched with a driven gear (52) in a rotating way; the driven gear (52) is in meshing engagement with the annular gear rack (39).
9. A drilling device for balancing shaft positioning holes, according to claim 8, characterized in that the positioning slot (48) is slidingly fitted with an auxiliary braking member (53); said auxiliary brake member (53) comprising a slide plate (54); two side surfaces of the sliding plate (54) are symmetrically and fixedly connected with fixing blocks (55); the fixing block (55) is in sliding fit with the fixing groove (49); the surface of the sliding plate (54) is fixedly connected with a fixing plate (56); a second hydraulic cylinder (57) is fixedly connected between the fixing plate (56) and the mounting plate (50); the surface of the fixed plate (56) is provided with a sliding hole (58); the sliding hole (58) is in sliding fit with the connecting shaft (51); the side surface of the fixing plate (56) is fixedly connected with an inserting ring (59); the side surface of the driven gear (52) is provided with an inserting groove (60); the plug ring (59) is in plug fit with the plug groove (60).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210477583.1A CN114570979B (en) | 2022-05-05 | 2022-05-05 | Drilling device for balance shaft positioning hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210477583.1A CN114570979B (en) | 2022-05-05 | 2022-05-05 | Drilling device for balance shaft positioning hole |
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| CN114570979B CN114570979B (en) | 2022-09-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117813971A (en) * | 2024-03-06 | 2024-04-05 | 中国农业科学院草原研究所 | Transplanting mechanism based on ecological restoration of degraded grassland |
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| CN114570979B (en) | 2022-09-02 |
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Denomination of invention: A drilling device for balancing shaft positioning holes Effective date of registration: 20230316 Granted publication date: 20220902 Pledgee: Postal Savings Bank of China Limited Yantai Penglai District sub branch Pledgor: SHANDONG YONG JIN TRANSMISSION MACHINERY CO.,LTD. Registration number: Y2023980034899 |