CN208961036U - Connecting rod machining of oil hole device - Google Patents

Abstract

The utility model discloses a kind of connecting rod machining of oil hole devices, belong to Machining of Connecting Rod field, its key points of the technical solution are that including workbench, it is fixedly connected with microcephaly's apotting spindle for being arranged connection microcephaly on the table, is also connected with the major part apotting spindle for being arranged connection major part on the table；It is fixedly connected with three groups on the table for processing the boring assemblies of oilhole, every group of boring assemblies rush at the setting of microcephaly's apotting spindle, and every group of boring assemblies are correspondingly connected with the oilhole of microcephaly；It is correspondingly connected on microcephaly's apotting spindle at three oil-hole locations of microcephaly and offers relief hole, it solves and needs pivot link when processing different oilholes, time-consuming and laborious problem, can once three oilholes be processed after fixing connecting rod by having reached, pivot link, time saving and energy saving effect are not needed.

Description

Connecting rod machining of oil hole device

Technical field

The utility model relates to Machining of Connecting Rod field, in particular to a kind of connecting rod machining of oil hole device.

Background technique

Connecting rod is connection piston and crankshaft, and active force suffered by piston is transmitted to crankshaft, and the reciprocating motion of piston is changed For the sheet metal component of the rotary motion of crankshaft.Gonnecting rod body is made of three parts, claims small end of connecting rod with the part of piston pin connection；With song The part of axis connection claims big end, and the bar portion for connecting microcephaly and major part claims connecting rod shank.

As depicted in figs. 1 and 2, connecting rod includes connection major part, connection microcephaly and is fixedly connected on connection major part and connects small Shaft between head opens up on connection microcephaly there are three oilhole, and three oilhole circumference array are on connection microcephaly, adjacent ones Axis between angle be 120 °.

The prior art can refer to the Chinese invention patent that Authorization Notice No. is CN203401333U, and it discloses a kind of connecting rods Machining of oil hole fixture, including clamp bottom board are slidably equipped with microcephaly's positioning core axle on the clamp bottom board, and are fixedly mounted There is big end locating piece, major part semicircle positioning sleeve is provided on the major part locating piece, is additionally provided on the clamp bottom board Bar clamping device.

When processing the oilhole of above-mentioned connecting rod using the device, due to needing to process three oilholes, so needing rotating clip Tool could be processed to drive link rotatable with drill bit, it is also necessary to it is positioned repeatedly, it is more troublesome, and it is time-consuming and laborious.

Utility model content

The purpose of the utility model is to provide a kind of connecting rod machining of oil hole devices, can be primary after connecting rod is fixed Three oilholes are processed, pivot link is not needed, it is time saving and energy saving.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of connecting rod machining of oil hole device, including workbench are fixedly connected with small for being arranged connection on the table Microcephaly's apotting spindle of head is also connected with the major part apotting spindle for being arranged connection major part on the table；On the table Three groups are fixedly connected with for processing the boring assemblies of oilhole, every group of boring assemblies rush at the setting of microcephaly's apotting spindle, and Every group of boring assemblies are correspondingly connected with the oilhole of microcephaly；Three oilhole positions of microcephaly are correspondingly connected on microcephaly's apotting spindle The place of setting offers relief hole.

By using above scheme, when processing the oilhole of connecting rod, first the connection major part of connecting rod is arranged and is positioned with major part In mandrel, connection microcephaly be sheathed on microcephaly's apotting spindle, fixed connecting rod, while realizing the positioning of connecting rod, then starting drilling Component processes three oilholes of connecting rod.Relief hole can be avoided boring assemblies and get on microcephaly's apotting spindle, guarantee Enough normal drills.Three oilholes are processed after realizing primary fixation, do not need pivot link, it is time saving and energy saving.

Preferably, boring assemblies include the fixing seat being fixedly connected on workbench, through slot is offered in fixing seat, Drilling rod is slidably connected in through slot, two ends of drill stretches out fixing seat setting, and sleeve is rotatably connected to outside drilling rod, is consolidated on sleeve Surely it is connected with the cylinder body of horizontal air cylinder, the piston rod of horizontal air cylinder is fixedly connected in fixing seat, the piston rod edge of horizontal air cylinder The length direction of through slot is arranged；It is fixedly connected with drill bit close to microcephaly's apotting spindle one end in drilling rod, is fixed in the drilling rod other end It is connected with driven gear；Motor is fixedly connected on sleeve, the output shaft of motor is fixedly connected with driving gear, driving gear It is engaged on driven gear.

By using above scheme, motor drives driving gear rotation, driving gear by drive driven gear rotation come Drilling rod rotation is driven, drill bit is rotated, horizontal air cylinder can drive the drill bit of rotation to move along the length direction of through slot, complete to bore Hole.

Preferably, three horizontal air cylinders and three motors are connected with control circuit jointly, control circuit includes: starting mould Block, the starting module include the button switch being fixedly connected on workbench, when button switch closure, starting module output Control signal；Control module, the control signal that the control module connects starting module and exports in response to starting module, when Control module receive starting module output control signal after be immediately controlled motor start-up operation, horizontal air cylinder piston rod before It stretches, the piston rod of horizontal air cylinder is shunk automatically after drill bit completes the process oilhole.

By using above scheme, three boring assemblies can be made to synchronously complete primary drilling by close push button switch, High degree of automation, control is simple, conveniently, due to three oilhole synchronous processings, so can be improved processing efficiency, when saving Between.

Preferably, control circuit further includes self-stopping technology module, the self-stopping technology module connects starting module, works as horizontal air cylinder Piston rod shrink back self-stopping technology module control starting module behind original position and stop output control signal.

By using above scheme, control circuit can be automatically stopped after processing is completed, high degree of automation.

It is provided with substrate at major part apotting spindle position preferably, corresponding in workbench, corresponds to the major part positioning heart in substrate Sliding slot is offered at shaft position, sliding slot is arranged along the length direction of major part apotting spindle and the line of microcephaly's apotting spindle, major part Apotting spindle is slidably connected in sliding slot.

By using above scheme, major part apotting spindle can slide along the chute, to change major part apotting spindle and microcephaly The distance between apotting spindle, the connecting rod of Lai Shiying different length.

Preferably, being fixedly connected to supporting block at workbench counterpart substrate end positions, substrate is fixedly connected on branch On bracer, gap is formed between substrate and workbench, the enough manpowers of the height in gap protrude into；Major part apotting spindle passes through substrate Setting, major part apotting spindle counterpart substrate lower section threaded one end are connected with fastening nut, and fastening nut can be connected under substrate Side.

Fastening nut is set to be connected to substrate bottom surface to fix major part by rotating fastening nut by using above scheme The relative position of apotting spindle and substrate prevents major part apotting spindle from occurring mobile in process and leading to not to connecting rod It is positioned.Staff can directly use hand rotating nut, easy to operate.

It is provided with revolution clamping cylinder at microcephaly's apotting spindle position preferably, corresponding in workbench, turns round clamping cylinder Connection microcephaly can be clamped on microcephaly's apotting spindle.

By using above scheme, connection microcephaly is compressed by revolution clamping cylinder, prevents connection microcephaly in boring procedure Middle generation is trembleed and causes machining accuracy inadequate, and product quality is influenced.

Preferably, being rotatably connected to multiple threaded rods, each threaded rod at the corresponding revolution clamping cylinder position of workbench It is each perpendicular to worktable upper surface setting, worktable upper surface is stretched out in each threaded rod one end, and all threaded rods stretch out work One end of platform upper surface is threaded with pedestal jointly, and revolution clamping cylinder is fixedly connected on pedestal.

By using above scheme, by rotating the distance between the adjustable pedestal of threaded rod and workbench, to adjust The height of clamping cylinder is turned round, guarantees that revolution clamping cylinder can clamp connection microcephaly.

In conclusion the utility model has the following beneficial effects:

1. process connecting rod oilhole when, first by the connection major part of connecting rod be arranged on major part apotting spindle, connect microcephaly It is sheathed on microcephaly's apotting spindle, fixed connecting rod, while realizing the positioning of connecting rod, then start boring assemblies to three of connecting rod Oilhole is processed.Relief hole can be avoided boring assemblies and get on microcephaly's apotting spindle, guarantee normal drill.It realizes Three oilholes are processed after once fixing, do not need pivot link, it is time saving and energy saving；

2. motor drives driving gear rotation, driving gear drives drilling rod to rotate, makes by driving driven gear rotation Drill bit rotation, horizontal air cylinder can drive the drill bit of rotation to move along the length direction of through slot, complete drilling.Pass through close push button Switch can make three boring assemblies synchronously complete primary drilling, and can be automatically stopped after processing is completed, automate journey Degree is high, and control simply, conveniently, due to three oilhole synchronous processings, so can be improved processing efficiency, saves the time；

3. major part apotting spindle can slide along the chute, to change between major part apotting spindle and microcephaly's apotting spindle Distance, the connecting rod of Lai Shiying different length.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of prominent connecting rod in background technique；

Fig. 2 is the cross-sectional view of prominent oilhole in background technique；

Fig. 3 is the overall structure diagram of embodiment；

Fig. 4 is the status diagram of prominent major part apotting spindle and microcephaly's apotting spindle use state in embodiment；

Fig. 5 is the cross-sectional view of prominent microcephaly's apotting spindle in embodiment；

Fig. 6 is the explosive view of prominent major part apotting spindle in embodiment；

Fig. 7 is the partial schematic diagram of prominent rotation clamping cylinder in embodiment；

Fig. 8 is the structural schematic diagram of prominent boring assemblies in embodiment；

Fig. 9 is the circuit diagram of prominent starting module and self-stopping technology module in embodiment；

Figure 10 is the circuit diagram of prominent control module in embodiment.

In figure, 1, connecting rod；11, major part is connected；12, microcephaly is connected；121, oilhole；13, shaft；2, workbench；21, microcephaly Apotting spindle；211, relief hole；212, round seat；22, major part apotting spindle；221, substrate；2211, supporting block；2212, gap； 2213, sliding slot；222, fastening nut；23, clamping cylinder is turned round；231, pedestal；232, threaded rod；3, boring assemblies；31, fixed Seat；311, through slot；32, drilling rod；321, drill bit；322, driven gear；33, sleeve；331, motor；3311, driving gear；312, Horizontal air cylinder；4, starting module；5, control module；6, self-stopping technology module；SB, button switch；VCC, power supply；YV1, the first electromagnetism Valve；YV2, second solenoid valve；The electromagnetic coil of KA1, relay；The normally opened contact of KA1-1, relay；KT1, first, which are powered, to prolong When the time relay electromagnetic coil；The normally opened contact of KT1-1, the first on-delay time relay；KT2, second, which are powered, to prolong When the time relay electromagnetic coil；The normally opened contact of KT2-1, the second on-delay time relay；KT2-2, second are powered The normally-closed contact of time delay relay；The electromagnetic coil of KT3, the third on-delay time relay；KT3-1, third are powered The normally-closed contact of time delay relay；R1, first resistor；R2, second resistance；R3,3rd resistor.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment: a kind of 1 oilhole 121 of connecting rod processing device, as shown in Figure 3 and Figure 4, including workbench 2, in workbench Microcephaly's apotting spindle 21 for being arranged connection microcephaly 12 and the major part positioning for being arranged connection major part 11 are fixedly connected on 2 Mandrel 22 is also fixedly connected with three groups for processing the boring assemblies 3 of oilhole 121 on workbench 2, and every group of boring assemblies 3 are equal The setting of microcephaly's apotting spindle 21 is rushed at, and every group of boring assemblies 3 are correspondingly connected with the oilhole 121 of microcephaly 12.

As shown in Figure 4 and Figure 5, it is fixedly connected with round seat 212 at corresponding 21 position of microcephaly's apotting spindle of workbench 2, it is small Head apotting spindle 21 is fixedly connected in round seat 212.Three oilholes 121 of microcephaly 12 are correspondingly connected on microcephaly's apotting spindle 21 Relief hole 211 is offered at position.When connection, microcephaly 12 is sheathed on microcephaly's apotting spindle 21, and boring assemblies 3 are fixed to microcephaly When position mandrel 21 is drilled, relief hole 211 can be avoided boring assemblies 3 and get on microcephaly's apotting spindle 21, guarantee just Often drilling.

As shown in Figure 4 and Figure 6, it is provided with substrate 221 at corresponding 22 position of major part apotting spindle of workbench 2, worked It is fixedly connected to supporting block 2211 at 2 counterpart substrate of platform, 221 end positions, substrate 221 is fixedly connected in supporting block 2211, Gap 2212 is formed between substrate 221 and workbench 2, the enough manpowers of the height in gap 2212 protrude into.It is corresponding big in substrate 221 Head apotting spindle offers sliding slot 2213, company of the sliding slot 2213 along major part apotting spindle 22 and microcephaly's apotting spindle 21 at 22 position The length direction of line is arranged, and major part apotting spindle 22 is slidably connected in sliding slot 2213.Major part apotting spindle 22 passes through substrate 221 Setting, 22 counterpart substrate of major part apotting spindle, 221 lower section threaded one end are connected with fastening nut 222, and fastening nut 222 can support It is connected to 221 bottom surface of substrate.Major part apotting spindle 22 2213 can slide along the chute, fixed to change major part apotting spindle 22 and microcephaly The distance between position mandrel 21, the connecting rod 1 of Lai Shiying different length.By rotating fastening nut 222, support fastening nut 222 221 bottom surface of substrate is connected to fix the relative position of major part apotting spindle 22 Yu substrate 221, prevents major part apotting spindle 22 from adding Occur mobile during work and leads to not position connecting rod 1.The enough manpowers in gap 2212 protrude into so that staff can Directly to rotate fastening nut 222 with hand, other tools are not needed.

As shown in fig. 7, being provided with revolution clamping cylinder 23, revolution at corresponding 21 position of microcephaly's apotting spindle of workbench 2 Clamping cylinder 23 can will connect small using the SRC type of Zhejiang Yi Chi Air Movement Technologies Inc production, revolution clamping cylinder 23 First 12 are clamped on microcephaly's apotting spindle 21.Multiple spiral shells are rotatably connected at corresponding revolution 23 position of clamping cylinder of workbench 2 Rasp bar 232, each threaded rod 232 are each perpendicular to the setting of 2 upper surface of workbench, and workbench 2 is stretched out in each 232 one end of threaded rod Upper surface, one end that all threaded rods 232 stretch out 2 upper surface of workbench are threaded with pedestal 231 jointly, turn round clamping cylinder 23 are fixedly connected on pedestal 231.By rotating the distance between the adjustable pedestal 231 of threaded rod 232 and workbench 2, come The height of adjustment revolution clamping cylinder 23 guarantees that revolution clamping cylinder 23 can clamp connection microcephaly 12, prevents connection microcephaly 12 Trembling occurs in boring procedure and causes machining accuracy inadequate.

As shown in figure 8, boring assemblies 3 include the fixing seat 31 being fixedly connected on workbench 2, opened up in fixing seat 31 There is through slot 311, drilling rod 32 is slidably connected in through slot 311, the setting of fixing seat 31 is stretched out at 32 both ends of drilling rod.Outside drilling rod 32 It is rotatably connected to sleeve 33, the cylinder body of horizontal air cylinder 312 is fixedly connected on sleeve 33, the piston rod of horizontal air cylinder 312 is fixed It is connected in fixing seat 31, the piston rod of horizontal air cylinder 312 is arranged along the length direction of through slot 311.In drilling rod 32 close to microcephaly 21 one end of apotting spindle is fixedly connected with drill bit 321, is fixedly connected with driven gear 322 in 32 other end of drilling rod；In sleeve 33 On be fixedly connected with motor 331, the output shaft of motor 331 is fixedly connected with driving gear 3311, and driving gear 3311 is engaged in On driven gear 322.

As shown in Figure 9 and Figure 10, horizontal air cylinder 312 is provided with the first electricity of the piston rod extension of controlled level cylinder 312 The second solenoid valve YV2 that the piston rod of magnet valve YV1 and controlled level cylinder 312 is withdrawn.All first solenoid valve YV1, the second electricity Magnet valve YV2 and motor 331 are connected with control circuit jointly, and control circuit includes starting module 4, control module 5 and self-stopping technology mould Block 6.Starting module 4 includes the button switch SB (referring to Fig. 1) being fixedly connected on workbench 2, and the one end button switch SB is electrically connected It is connected to power supply VCC, the button switch SB other end is electrically connected with the electromagnetic coil KA1 of relay, and the electromagnetic coil KA1 of relay is another One end is electrically connected with the electromagnetic coil KT1 of the first on-delay time relay, the electromagnetism of the first on-delay time relay The coil KT1 other end is electrically connected with the electromagnetic coil KT2 of the second on-delay time relay.

As shown in figure 9, self-stopping technology module 6 includes the electromagnetic coil KT2 for being electrically connected to the second on-delay time relay The electromagnetic coil KT3 of the third on-delay time relay of the other end, the electromagnetic coil of the third on-delay time relay The KT3 other end is electrically connected with first resistor R1, and the first resistor R1 other end is electrically connected with the third on-delay time relay Normally-closed contact KT3-1, the normally-closed contact KT3-1 other end ground connection of the third on-delay time relay.

As shown in Figure 10, control module 5 includes the normally opened contact KA1-1, the normally opened contact KA1-1 mono- of relay of relay End is electrically connected with power supply VCC, and the normally opened contact KA1-1 other end of relay is electrically connected on all motors 331, all motors 331 other ends ground connection.The normal of the first on-delay time relay being serially connected is parallel between power supply VCC and ground terminal Open contact KT1-1, the normally-closed contact KT2-2 of the second on-delay time relay and second resistance R2, all first solenoid valves YV1 is series between the normally opened contact KT1-1 and second resistance R2 of the first on-delay time relay.In power supply VCC and The normally opened contact KT2-1 and 3rd resistor R3 of the second on-delay time relay being serially connected are parallel between ground terminal, All second solenoid valve YV2 are electrically connected to the normally opened contact KT2-1 and 3rd resistor R3 of the second on-delay time relay Between.

When button switch SB closure, the electromagnetic wire of the electromagnetic coil KA1 of relay, the first on-delay time relay Enclose KT1, the electromagnetic coil KT2 of the second on-delay time relay and the electromagnetic coil of the third on-delay time relay KT3 obtains electric, the normally opened contact KA1-1 closure of the electromagnetic coil KA1 control relay of relay, the first on-delay time simultaneously Normally opened contact KT1-1 of the electromagnetic coil KT1 of relay in about one second or so the first on-delay time relay of control of delay Closure, obtains the first solenoid valve YV1 electric, and the piston rod of horizontal air cylinder 312 stretches out, and drill bit 321 is moved to microcephaly's apotting spindle 21. The electromagnetic coil KT2 of the second on-delay time relay completes to control for the second on-delay time after drilling in drill bit 321 The normally opened contact KT2-1 closure of relay, the normally-closed contact KT2-2 of the second on-delay time relay are disconnected, and make the second electricity Magnet valve YV2 obtains electric, the first solenoid valve YV1 power loss, and the piston rod of horizontal air cylinder 312 is withdrawn, and drill bit 321 positions the heart to far from microcephaly 21 direction of axis is mobile.Electromagnetic coil KT3 control when drill bit 321 moves to initial position of the third on-delay time relay The normally-closed contact KT3-1 of the third on-delay time relay is disconnected, and makes electromagnetic coil KA1, the first on-delay of relay The electromagnetic coil KT1 of the time relay, the electromagnetic coil KT2 of the second on-delay time relay and third on-delay time The electromagnetic coil KT3 while power loss of relay, system reset, connecting rod 1 can be completed in cut-off push button switch SB to staff at this time Oilhole 121 processing.Make three oilholes 121 of connecting rod 1 while being processed, high degree of automation is high-efficient, staff Labor intensity is small.

Usage mode: when needing to process oilhole 121 on connecting rod 1, the connection major part 11 of connecting rod 1 is first sheathed on major part On apotting spindle 22, connection microcephaly 12 is sheathed on microcephaly's apotting spindle 21.Rotation clamping cylinder is clamped microcephaly 12 is connected.So Close push button switch SB afterwards, control circuit three boring assemblies 3 of control, which synchronize, drills to connecting rod 1, high in machining efficiency, drilling It is accurate to compare.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of connecting rod machining of oil hole device, including workbench (2), it is characterised in that: be fixedly connected on workbench (2) For being arranged microcephaly's apotting spindle (21) of connection microcephaly (12), it is also connected on workbench (2) for being arranged connection major part (11) major part apotting spindle (22)；

Three groups are fixedly connected on workbench (2) for processing the boring assemblies (3) of oilhole (121), every group of boring assemblies (3) Microcephaly's apotting spindle (21) setting is rushed at, and every group of boring assemblies (3) is correspondingly connected with the oilhole of microcephaly (12) (121)；

It is correspondingly connected on microcephaly's apotting spindle (21) at three oilhole (121) positions of microcephaly (12) and offers relief hole (211)。

2. connecting rod machining of oil hole device according to claim 1, it is characterised in that: boring assemblies (3) include fixed connect The fixing seat (31) being connected on workbench (2), offers through slot (311) on fixing seat (31), and sliding connects in through slot (311) It being connected to drilling rod (32), fixing seat (31) setting is stretched out at drilling rod (32) both ends, sleeve (33) are rotatably connected to outside drilling rod (32), The cylinder body of horizontal air cylinder (312) is fixedly connected on sleeve (33), the piston rod of horizontal air cylinder (312) is fixedly connected on fixing seat (31) on, the piston rod of horizontal air cylinder (312) is arranged along the length direction of through slot (311)；It is positioned in drilling rod (32) close to microcephaly Mandrel (21) one end is fixedly connected with drill bit (321), and in drilling rod (32), the other end is fixedly connected with driven gear (322)；It is covering It is fixedly connected with motor (331) on cylinder (33), the output shaft of motor (331) is fixedly connected with driving gear (3311), driving tooth Wheel (3311) is engaged on driven gear (322).

3. connecting rod machining of oil hole device according to claim 2, which is characterized in that three horizontal air cylinders (312) and three A motor (331) is connected with control circuit jointly, and control circuit includes:

Starting module (4), the starting module (4) include the button switch (SB) being fixedly connected on workbench (2), work as button When switching (SB) closure, starting module (4) output control signal；

Control module (5), the control module (5) connect starting module (4) and in response to the controls of starting module (4) output Signal, when control module (5) receive starting module (4) output control signal after be immediately controlled motor (331) start to work, The piston rod of horizontal air cylinder (312) protracts, and completes the process the piston rod of oilhole (121) horizontal air cylinder (312) afterwards in drill bit (321) It is automatic to shrink.

4. connecting rod machining of oil hole device according to claim 3, it is characterised in that: control circuit further includes self-stopping technology mould Block (6), the self-stopping technology module (6) connect starting module (4), after the piston rod of horizontal air cylinder (312) shrinks back original position certainly Stopping modular (6) controls starting module (4) and stops output control signal.

5. connecting rod machining of oil hole device according to claim 1, it is characterised in that: in workbench (2), corresponding major part is fixed Position is provided with substrate (221) at mandrel (22) position, offers cunning at substrate (221) corresponding major part apotting spindle (22) position Slot (2213), sliding slot (2213) are arranged along the length direction of major part apotting spindle (22) and the line of microcephaly's apotting spindle (21), Major part apotting spindle (22) is slidably connected in sliding slot (2213).

6. connecting rod machining of oil hole device according to claim 5, it is characterised in that: in workbench (2) counterpart substrate (221) it is fixedly connected at end positions supporting block (2211), substrate (221) is fixedly connected on supporting block (2211), base It is formed between plate (221) and workbench (2) gap (2212), the enough manpowers of height of gap (2212) protrude into；Major part positioning Mandrel (22) is arranged across substrate (221), and threaded one end is connected with fastening below major part apotting spindle (22) counterpart substrate (221) Nut (222), fastening nut (222) can be connected to below substrate (221).

7. connecting rod machining of oil hole device according to claim 1, it is characterised in that: in workbench (2), corresponding microcephaly is fixed Revolution clamping cylinder (23) is provided at mandrel (21) position of position, revolution clamping cylinder (23) can clamp connection microcephaly (12) On microcephaly's apotting spindle (21).

8. connecting rod machining of oil hole device according to claim 7, it is characterised in that: in workbench (2) corresponding revolution folder It is rotatably connected to multiple threaded rods (232) at tight cylinder (23) position, each threaded rod (232) is each perpendicular on workbench (2) Workbench (2) upper surface is stretched out in surface setting, each threaded rod (232) one end, and all threaded rods (232) stretch out workbench (2) one end of upper surface is threaded with pedestal (231) jointly, and revolution clamping cylinder (23) is fixedly connected on pedestal (231).