CN111230628A

CN111230628A - Crank connecting rod end face grinding device

Info

Publication number: CN111230628A
Application number: CN202010121754.8A
Authority: CN
Inventors: 富丽慧
Original assignee: Individual
Current assignee: Yangzhou Chuangmeng Bicycle Fitting Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-06-05
Anticipated expiration: 2040-02-26
Also published as: CN111230628B

Abstract

The invention relates to the field of automobile part manufacturing, in particular to a crank connecting rod end face grinding device which comprises a rotary worktable, a grinding machine and a movable baffle plate, wherein the rotary worktable is arranged on the grinding machine; fixed mounting has a plurality of tool fixed plates that encircle the rotary worktable axis equipartition on rotary worktable's the mesa, equal fixed mounting has first work piece tool on every tool fixed plate, the second work piece tool, the work piece is put on the top surface of tool fixed plate, the side at the work piece is supported to the work end of first work piece tool, the top surface at the work piece is supported to the work end of second work piece tool, adjustable fender sets up directly over rotary worktable, adjustable fender is located the vertical face that rotary worktable axis was located, the grinding machine sets up in one side of adjustable fender, the vertical downward setting of work end of grinding machine, the equipment can be quick, carry out abrasive machining to the terminal surface of crank connecting rod in batches, high efficiency.

Description

Crank connecting rod end face grinding device

Technical Field

The invention relates to the field of automobile part manufacturing, in particular to a crank connecting rod end face grinding device.

Background

The crank mechanism is the main motion mechanism of the engine. The function is to convert the reciprocating motion of the piston into the rotating motion of the crankshaft, and simultaneously convert the force acting on the piston into the torque output by the crankshaft to drive the automobile wheels to rotate. The crank connecting rod mechanism consists of a piston group, a connecting rod group, a crankshaft, a flywheel group and other parts.

The end faces of the big circular end and the small circular end of the crank connecting rod are required to be polished after the crank connecting rod is forged and formed, only one crank connecting rod can be machined when the end face of the crank connecting rod is machined by the existing equipment, batch machining cannot be conducted, and efficiency is low.

Disclosure of Invention

The invention aims to provide a crank connecting rod end face grinding device which can quickly and batch grind the end faces of crank connecting rods and is high in efficiency.

In order to solve the technical problems, the invention provides the following technical scheme:

a crank connecting rod end face grinding device comprises a rotary worktable, a grinding machine and a movable baffle; a plurality of jig fixing plates surrounding the rotary worktable are fixedly mounted on the table top of the rotary worktable, a first workpiece jig and a second workpiece jig are fixedly mounted on each jig fixing plate, workpieces are placed on the top surfaces of the jig fixing plates, the working ends of the first workpiece jigs are abutted against the side surfaces of the workpieces, the working ends of the second workpiece jigs are abutted against the top surfaces of the workpieces, a movable baffle is arranged right above the rotary worktable, the movable baffle is located on the vertical surface where the rotary worktable axis is located, a grinding machine is arranged on one side of the movable baffle, and the working ends of the grinding machine are vertically and downwards arranged.

Preferably, the rotary worktable comprises a precision dividing disc and an annular turntable fixedly arranged at the working end of the precision dividing disc, the working shaft of the precision dividing disc is vertically arranged, and a jig fixing plate is fixedly connected with the top surface of the annular turntable.

Preferably, the grinding machine comprises a first rotary driver and a disc-shaped grinding wheel fixedly mounted on a working shaft of the first rotary driver, the working shaft of the first rotary driver is vertically arranged downwards, the rotary table further comprises at least one upright and a universal ball fixedly mounted at the top end of each upright, the upright is located under the disc-shaped grinding wheel, and the top end of the universal ball is abutted to the bottom surface of the annular turntable.

Preferably, first work piece tool is including the fixed block, the movable block, the guide bar, first threaded rod, 3e0, fixed block and tool fixed plate fixed connection, the guide bar level set up and with the fixed block, the equal fixed connection of tool fixed plate, first threaded rod level sets up and rotatably installs on the fixed block, the guide bar sets up side by side with first threaded rod, movable block and guide bar sliding connection, movable block and first threaded rod threaded connection, the one side that the movable block was kept away from to the fixed block is provided with the vertical first draw-in groove that runs through the fixed block, the one side that the fixed block was kept away from to the movable block is provided with the vertical second draw-in groove that runs through the movable block, first draw-in groove and second draw-in.

Preferably, be provided with the first spout that the slope runs through the tool fixed plate downwards on the tool fixed plate, second work piece tool is including the slider, push-and-pull dish, the second threaded rod, the nut, slider and first spout sliding connection, the one side of slider is provided with the vertical second spout that runs through the slider, the top of slider is provided with the level towards the clamp plate that extends between fixed block and the movable block, push-and-pull dish slidable installs inside the second spout, second threaded rod level set up and with push-and-pull dish fixed connection, nut and tool fixed plate fixed connection, second threaded rod and nut threaded connection, first spout, the second spout is T type groove.

Preferably, the push-pull disc is fixedly provided with a plurality of solid graphite which are uniformly distributed around the axial direction of the push-pull disc, and two end faces of the solid graphite are flush with two end faces of the push-pull disc.

Preferably, the automatic unloading machine comprises a linear sliding table, a rotary driver, a first output end and a second output end, wherein the linear sliding table is horizontally arranged and fixedly connected with the circular disc, the rotary driver is fixedly arranged at the working part of the linear sliding table, the first output end and the second output end are horizontally arranged side by side and rotatably arranged at the working part of the linear sliding table, and the first output end and the second output end are in transmission connection with an output shaft of the rotary driver; and under the working state of the automatic unloading machine, the first output end and the second output end are respectively in transmission connection with the first threaded rod and the second threaded rod.

Preferably, first output, second output all include pivot, safety coupling, six arris poles, and the pivot is rotatably installed on sharp slip table, and the pivot is connected with the output shaft transmission of rotary actuator, and the pivot passes through safety coupling and is connected with six arris pole transmission, all is provided with the six arris platform holes of being connected with six arris pole transmission on first threaded rod, the second threaded rod.

Compared with the prior art, the invention has the beneficial effects that:

the rotary worktable is used for driving a jig fixing plate to rotate a fixed angle at each time, the jig fixing plate drives a first workpiece jig, a second workpiece jig rotates together, the first workpiece jig is used for clamping the side face of a workpiece, the jig fixing plate and the second workpiece jig clamp the top face and the bottom face of the workpiece, so that the workpiece is firmly fixed on the jig, the rotary worktable drives the workpiece to rotate the fixed angle at each time, on one side of a movable baffle plate, a worker carries out feeding and discharging on the workpiece, on the other side of the movable baffle plate, a grinding machine carries out grinding treatment on the section of the workpiece, and the movable baffle plate is used for shielding fragments generated by grinding work from splashing towards the direction of the worker.

The equipment can be used for rapidly and batch grinding the end faces of the crank connecting rods, and is high in efficiency.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is a perspective view of the present invention with the movable door removed;

FIG. 5 is a front view of a rotary table of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 5;

FIG. 7 is a side view of the fixture and the automatic unloader of the present invention;

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

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

fig. 10 is a perspective view of an automatic unloader of the present invention;

FIG. 11 is a perspective view of the jig of the present invention;

FIG. 12 is a perspective cross-sectional view of a jig according to the present invention;

FIG. 13 is an enlarged view of a portion of FIG. 12 at E;

the reference numbers in the figures are:

1-a rotary table; 1 a-a precision dividing disc; 1 b-an annular turntable; 1 c-a column; 1 d-ball transfer;

2-fixture fixing plate; 2 a-a first chute;

3-a first workpiece fixture; 3 a-a fixed block; 3a 1-first card slot; 3 b-a movable block; 3b 1-second card slot; 3 c-a guide bar; 3 d-first threaded rod; 3d1 — first hexagonal frustum holes;

4-a second workpiece fixture; 4 a-a slider; 4a 1-second runner; 4a 2-platen; 4 b-a push-pull disc; 4b 1-solid graphite; 4 c-a second threaded rod; 4c 1-second hexagonal frustum holes; 4 d-nut;

5-grinding machine; 5 a-a first rotary drive; 5 b-disc-shaped grinding wheel;

6-a movable baffle;

7-fixing the workbench; 7 a-a second upright; 7 b-circular disk;

8-automatic unloading machine; 8 a-linear slipway; 8 b-a rotary drive; 8 c-a first output; 8c1 — first shaft; 8c2 — first safety coupling; 8c3 — first hexagonal bar; 8 d-a second output; 8d 1-second shaft; 8d2 — second safety coupling; 8d 3-second hexagonal bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

A crank connecting rod end face grinding device as shown in fig. 1 to 13 comprises a rotary worktable 1, a grinding machine 5 and a movable baffle 6; fixed mounting has a plurality of tool fixed plates 2 that encircle 1 axis equipartition of rotary worktable on rotary worktable 1's the mesa, equal fixed mounting has first work piece tool 3 on every tool fixed plate 2, second work piece tool 4, the work piece is put on the top surface of tool fixed plate 2, the side that leans on the work piece is held to the work end of first work piece tool 3, the top surface that leans on the work piece is held to the work end of second work piece tool 4, adjustable fender 6 sets up directly over rotary worktable 1, adjustable fender 6 is located the vertical face that 1 axis of rotary worktable located, grinding machine 5 sets up in one side of adjustable fender 6, the vertical downward setting of work end of grinding machine 5.

Rotary table 1 is used for driving 2 rotatory fixed angles at every turn of tool fixed plate, tool fixed plate 2 drives first work piece tool 3, second work piece tool 4 rotates together, first work piece tool 3 is used for cliping the side of work piece, tool fixed plate 2 and second work piece tool 4 clip the top surface and the bottom surface of work piece, thereby firmly fix the work piece on the tool, rotary table 1 drives the angle of work piece rotatory fixed at every turn, in one side of adjustable fender 6, the workman carries out the material loading to the work piece, the operation of unloading, at adjustable fender 6's opposite side, grinding machine 5 carries out grinding process to the section of work piece, adjustable fender 6 is used for sheltering from the piece that grinding work produced and splashes towards workman's direction.

The rotary working table 1 comprises a precision index plate 1a and an annular rotary plate 1b fixedly mounted at the working end of the precision index plate 1a, a working shaft of the precision index plate 1a is vertically arranged, and a jig fixing plate 2 is fixedly connected with the top surface of the annular rotary plate 1 b.

The precision indexing disc 1a is used for driving the annular turntable 1b to rotate, and the annular turntable 1b is used for installing the jig fixing plate 2.

Grinding machine 5 is including first rotary actuator 5a and fixed mounting at the epaxial disc type emery wheel 5b of first rotary actuator 5a work, and the vertical downward setting of the work of first rotary actuator 5a axle, and rotary table 1 is still including at least one stand 1c and the universal ball 1d of fixed mounting at every stand 1c top, and stand 1c is located disc type emery wheel 5b under, and the top of universal ball 1d and the bottom surface of annular carousel 1b support and lean on.

The first rotary driver 5a comprises a servo motor and a transmission mechanism, the first rotary driver 5a is used for driving the disc-shaped grinding wheel 5b to rotate, the disc-shaped grinding wheel 5b rotates at a high speed to grind the end face of the crank connecting rod through the bottom face of the disc-shaped grinding wheel, the disc-shaped grinding wheel 5b can grind a plurality of crank connecting rods simultaneously, the efficiency is high, meanwhile, in order to avoid the vibration in the vertical direction generated when a plurality of crank connecting rods are ground simultaneously, the annular turntable 1b is vibrated, therefore, the bottom of the annular turntable 1b is provided with the universal ball 1d to lift the annular turntable upwards, and the universal ball 1d can hold the annular turntable 1b and does not hinder the rotation of the annular turntable 1 b.

First work piece tool 3 is including fixed block 3a, movable block 3b, guide bar 3c, first threaded rod 3d, 3e0,

fixed block

3a and 2 fixed connection of tool fixed plate, guide bar 3c level sets up and with fixed block 3a, the equal fixed connection of tool fixed plate 2, first threaded rod 3d level sets up and rotatably installs on fixed block 3a, guide bar 3c sets up side by side with first threaded rod 3d, movable block 3b and guide bar 3c sliding connection, movable block 3b and first threaded rod 3d threaded connection, the one side that movable block 3b was kept away from to fixed block 3a is provided with vertical first draw-in groove 3a1 that runs through fixed block 3a, the one side that fixed block 3a was kept away from to movable block 3b is provided with vertical second draw-in groove 3b1 that runs through movable block 3b, first draw-in groove 3a1 and second draw-in groove 3b1 are V type groove.

First draw-in groove 3a1 is used for joint crank connecting rod's big circle end side, second draw-in groove 3b1 is used for joint crank connecting rod's small circle end side, guide bar 3c is used for guiding the activity direction of movable block 3b, first threaded rod 3d is used for driving movable block 3b horizontal migration, the rotatory first threaded rod 3d of staff can make movable block 3b remove along guide bar 3c under the effect of screw thread, when fixed block 3a is close to with movable block 3b in opposite directions, the staff places the crank connecting rod on tool fixed plate 2, when fixed block 3a is kept away from with movable block 3b in opposite directions, big circle end and the small circle end chucking of crank connecting rod are tightly held to first draw-in groove 3a1 and second draw-in groove 3b1, make the crank connecting rod can's unable removal on the horizontal plane.

Be provided with the first spout 2a that the slope runs through tool fixed plate 2 downwards on the tool fixed plate 2, second work piece tool 4 is including slider 4a, push-and-pull dish 4b, second threaded rod 4c, nut 4d, slider 4a and first spout 2a sliding connection, the one side of slider 4a is provided with the vertical second spout 4a1 that runs through slider 4a, the top of slider 4a is provided with the level and extends towards clamp plate 4a2 between fixed block 3a and the movable block 3b, push-and-pull dish 4b slidable installs inside second spout 4a1, second threaded rod 4c level set up and with push-and-pull dish 4b fixed connection, nut 4d and tool fixed plate 2 fixed connection, second threaded rod 4c and nut 4d threaded connection, first spout 2a, second spout 4a1 is T type groove.

Because second threaded rod 4c and nut 4d threaded connection, so the staff rotates second threaded rod 4c and can make its axial displacement, second threaded rod 4c and push-and-pull dish 4b fixed connection, push-and-pull dish 4b moves along with second threaded rod 4c and thereby drags slider 4a horizontal slip through second spout 4a1, because first spout 2a is the chute, so slider 4a also can rise and fall in vertical direction along first spout 2a horizontal slip, thereby clamp plate 4a2 is along with slider 4a vertical lift together can be with the vertical downward pressure of crank link on tool fixed plate 2.

A plurality of solid graphite 4b1 which is evenly distributed around the push-pull disc 4b in the axial direction is fixedly arranged on the push-pull disc 4b, and two end faces of the solid graphite 4b1 are flush with two end faces of the push-pull disc 4 b.

The solid graphite 4b1 is a common solid lubricant, when the push-pull disc 4b slides vertically up and down in the second chute 4a1 and rotates, the solid graphite 4b1 rubs against the inner wall of the second chute 4a1 and rubs the solid graphite 4b1 into fine powder, and the solid graphite 4b1 in a powder state is uniformly smeared on the contact surface of the second chute 4a1 and the solid graphite 4b1 along with the movement of the push-pull disc 4b, so that a good lubricating effect is achieved.

The automatic unloading machine 8 comprises a linear sliding table 8a, a rotary driver 8b, a first output end 8c and a second output end 8d, the linear sliding table 8a is horizontally arranged and is fixedly connected with the circular disc 7b, the rotary driver 8b is fixedly arranged at the working part of the linear sliding table 8a, the first output end 8c and the second output end 8d are horizontally arranged side by side and rotatably arranged at the working part of the linear sliding table 8a, the first output end 8c and the second output end 8d are in transmission connection with an output shaft of the rotary driver 8 b; under the working state of the automatic unloading machine 8, the first output end 8c and the second output end 8d are respectively in transmission connection with the first threaded rod 3d and the second threaded rod 4 c.

The annular rotary table 1b and the circular disc 7b form a double-layer workbench, the annular rotary table 1b can rotate, the circular disc 7b cannot rotate, the circular disc 7b is used for installing an automatic unloading machine 8, the linear sliding table 8a is used for driving the first output end 8c and the second output end 8d to move towards 7d0 and the second threaded rod 4c so as to be in transmission connection, the rotary driver 8b is used for driving the first output end 8c and the second output end 8d to rotate so as to transmit torque to the first threaded rod 3d and the second threaded rod 4c, the first threaded rod 3d and the second threaded rod 4c rotate forward to clamp a workpiece, and the first threaded rod 3d and the second threaded rod 4c rotate reversely to unload.

First output 8c, second output 8d all include pivot, safety coupling, six arris poles, and the pivot is rotatably installed on sharp slip table 8a, and the pivot is connected with rotary actuator 8 b's output shaft transmission, and the pivot passes through safety coupling to be connected with six arris pole transmission, all is provided with the six arris platform holes of being connected with six arris pole transmission on first threaded rod 3d, the second threaded rod 4 c.

The first output end 8c comprises a first rotating shaft 8c1, a first safety coupling 8c2 and a first hexagonal rod 8c3, the first rotating shaft 8c1 is rotatably mounted on the linear sliding table 8a through a bearing seat, the first rotating shaft 8c1 is in transmission connection with an output shaft of the rotary driver 8b through a speed reducer, the first safety coupling 8c2 is used for fixedly connecting the first rotating shaft 8c1 and the first hexagonal rod 8c3 and transmitting torque, the first safety coupling 8c2 idles when the first hexagonal rod 8c3 is locked, the first threaded rod 3d is provided with a first hexagonal platform hole 3d1 matched with the first hexagonal rod 8c3, the lower bottom of the first hexagonal platform hole 3d1 faces outwards, when the first hexagonal rod 8c3 is inserted into the front end of the first hexagonal platform hole 3d1, the first hexagonal rod 8c3 is not in contact with the first hexagonal platform hole 3d1, and when the first hexagonal rod 8c 638 c is inserted into the first hexagonal platform hole 1d 638 d, the first hexagonal rod 8c3 is in transmission connection with the 3d 2;

the second output end 8d comprises a second rotating shaft 8d1, a second safety coupling 8d2 and a second hexagonal rod 8d3, the second rotating shaft 8d1 is rotatably mounted on the linear sliding table 8a through a bearing seat, the second rotating shaft 8d1 is in transmission connection with the first rotating shaft 8c1 through a synchronous belt transmission mechanism, the second safety coupling 8d2 is used for fixedly connecting the second rotating shaft 8d1 and the second hexagonal rod 8d3 and transmitting torque, the second safety coupling 8d2 idles when the second hexagonal rod 8d3 is locked, a second hexagonal rod hole 4c1 matched with the second hexagonal rod 8d3 is arranged on the second threaded rod 4c, the lower bottom of the second hexagonal rod 4c1 faces outwards, when the second hexagonal rod 8d3 is inserted into the front end of the second hexagonal rod 4c1, the second hexagonal rod 8d3 and the second hexagonal rod 354 c1 are not in contact with the second hexagonal rod 3, the second hexagonal rod 8d3 is in transmission connection with the 3d2, and the second threaded rod 4c rotates and moves axially, so the second hexagonal rod 8d3 is directly inserted into the end of the second hexagonal hole 4c1, the second hexagonal hole 4c1 gradually disengages from the second hexagonal rod 8d3 when rotating, but the second hexagonal rod 8d3 can still transmit torque to the second hexagonal hole 4c1 before the second hexagonal rod 8d3 moves to the middle end of the second hexagonal hole 4c 1.

The working principle of the invention is as follows:

the device comprises a rotary worktable 1, a jig fixing plate 2, a first workpiece jig 3, a second workpiece jig 4, a grinding machine 5, a movable baffle 6, a fixed worktable 7 and an automatic unloading machine 8; the rotary workbench 1 is used for driving the fixture fixing plate 2 to rotate for a fixed angle each time, the fixture fixing plate 2 drives the first workpiece fixture 3 and the second workpiece fixture 4 to rotate together, the first workpiece fixture 3 is used for clamping the side surface of a workpiece, and the fixture fixing plate 2 and the second workpiece fixture 4 clamp the top surface and the bottom surface of the workpiece, so that the workpiece is firmly fixed on the fixture;

specifically, the first workpiece fixture 3 comprises a fixed block 3a, a movable block 3b, a guide rod 3c, a first threaded rod 3d and a first threaded rod 3e0, a first clamping groove 3a1 vertically penetrating through the fixed block 3a is formed in one surface, away from the movable block 3b, of the fixed block 3a, a second clamping groove 3b1 vertically penetrating through the movable block 3b is formed in one surface, away from the fixed block 3a, of the movable block 3b, the first clamping groove 3a1 is used for clamping the side surface of a large round end of a crank connecting rod, the second clamping groove 3b1 is used for clamping the side surface of a small round end of the crank connecting rod, the guide rod 3c is used for guiding the movable direction of the movable block 3b, the first threaded rod 3d is used for driving the movable block 3b to horizontally move, a worker can rotate the first threaded rod 3d to enable the movable block 3b to move along the guide rod 3c under the action of the threads, when the fixed block 3a is away from the movable block 3b, the large round end of the crank connecting rod and the small round end, so that the crank connecting rod cannot move on the horizontal plane;

the rotary worktable 1 drives a workpiece to rotate by a fixed angle each time, workers carry out loading and unloading operations on the workpiece on one side of the movable baffle 6, and the first workpiece jig 3 and the second workpiece jig 4 are locked or unloaded by the automatic unloading machine 8 after the workpiece is loaded or before the workpiece is unloaded each time;

specifically, the fixed workbench 7 comprises a second upright post 7a arranged at the hollow part of the precision indexing disc 1a and a circular disc 7b fixedly arranged at the top end of the second upright post 7a, the automatic unloading machine 8 is fixedly arranged on the circular disc 7b, at least one automatic unloading machine 8 is arranged, the grinding machine 5 and the automatic unloading machine 8 are respectively positioned at two sides of the movable baffle 6, the automatic unloading machine 8 comprises a linear sliding table 8a, a rotary driver 8b, a first output end 8c and a second output end 8d, the linear sliding table 8a is used for driving the first output end 8c, the second output end 8d to move towards 7d0 and the second threaded rod 4c so as to be in transmission connection, the rotary driver 8b is used for driving the first output end 8c and the second output end 8d to rotate so as to transmit torque to the first threaded rod 3d and the second threaded rod 4c, and the first threaded rod 3d and the second threaded rod 4c positively rotate to clamp workpieces, the first threaded rod 3d and the second threaded rod 4c rotate reversely to unload;

the rotary working table 1 drives the clamped workpiece to move to the other side of the movable baffle 6, the grinding machine 5 carries out grinding treatment on the section of the workpiece, and the movable baffle 6 is used for shielding fragments generated by grinding work from splashing towards the direction of workers.

Claims

1. A crank connecting rod end face grinding device is characterized by comprising a rotary worktable (1), a grinding machine (5) and a movable baffle (6); fixed mounting has a plurality of tool fixed plates (2) that encircle rotary worktable (1) axis equipartition on the mesa of rotary worktable (1), equal fixed mounting has first work piece tool (3) on every tool fixed plate (2), second work piece tool (4), the work piece is put on the top surface of tool fixed plate (2), the work end of first work piece tool (3) supports and leans on the side at the work piece, the work end of second work piece tool (4) supports and leans on the top surface at the work piece, adjustable fender (6) set up directly over rotary worktable (1), adjustable fender (6) are located the vertical face that rotary worktable (1) axis was located, grinding machine (5) set up in one side of adjustable fender (6), the vertical downward setting of work end of grinding machine (5).

2. A crank connecting rod end face grinding device according to claim 1, characterized in that the rotary table (1) comprises a precision dividing disc (1 a) and an annular turntable (1 b) fixedly installed at the working end of the precision dividing disc (1 a), the working shaft of the precision dividing disc (1 a) is vertically arranged, and the fixture fixing plate (2) is fixedly connected with the top face of the annular turntable (1 b).

3. A crank connecting rod end face grinding device according to claim 2, characterized in that the grinding machine (5) comprises a first rotary driver (5 a) and a disc-shaped grinding wheel (5 b) fixedly mounted on the working shaft of the first rotary driver (5 a), the working shaft of the first rotary driver (5 a) is arranged vertically downwards, the rotary table (1) further comprises at least one upright (1 c) and a universal ball (1 d) fixedly mounted at the top end of each upright (1 c), the upright (1 c) is positioned right below the disc-shaped grinding wheel (5 b), and the top end of the universal ball (1 d) abuts against the bottom face of the annular rotary disc (1 b).

4. The grinding device for the end face of the crank connecting rod according to claim 1, wherein the first workpiece fixture (3) comprises a fixed block (3 a), a movable block (3 b), a guide rod (3 c), a first threaded rod (3 d) and a first workpiece 0, the fixed block (3 a) is fixedly connected with the fixture fixing plate (2), the guide rod (3 c) is horizontally arranged and fixedly connected with the fixed block (3 a) and the fixture fixing plate (2), the first threaded rod (3 d) is horizontally arranged and rotatably mounted on the fixed block (3 a), the guide rod (3 c) is arranged side by side with the first threaded rod (3 d), the movable block (3 b) is slidably connected with the guide rod (3 c), the movable block (3 b) is in threaded connection with the first threaded rod (3 d), a first clamping groove (3 a 1) vertically penetrating through the fixed block (3 a) is arranged on the surface of the fixed block (3 a) far away from the movable block (3 b), one side of the movable block (3 b) far away from the fixed block (3 a) is provided with a second clamping groove (3 b 1) vertically penetrating through the movable block (3 b), and the first clamping groove (3 a 1) and the second clamping groove (3 b 1) are both V-shaped grooves.

5. The crank connecting rod end face grinding device according to claim 4, characterized in that the fixture fixing plate (2) is provided with a first sliding groove (2 a) which obliquely penetrates through the fixture fixing plate (2) downwards, the second workpiece fixture (4) comprises a sliding block (4 a), a push-pull disc (4 b), a second threaded rod (4 c) and a nut (4 d), the sliding block (4 a) is connected with the first sliding groove (2 a) in a sliding manner, one surface of the sliding block (4 a) is provided with a second sliding groove (4 a 1) which vertically penetrates through the sliding block (4 a), the top end of the sliding block (4 a) is provided with a pressing plate (4 a 2) which horizontally extends between the fixed block (3 a) and the movable block (3 b), the push-pull disc (4 b) is slidably installed in the second sliding groove (4 a 1), the second threaded rod (4 c) is horizontally arranged and fixedly connected with the push-pull disc (4 b), nut (4 d) and tool fixed plate (2) fixed connection, second threaded rod (4 c) and nut (4 d) threaded connection, first spout (2 a), second spout (4 a 1) are T type groove.

6. A crank connecting rod end face grinding device according to claim 5, characterized in that the push-pull disc (4 b) is fixedly provided with a plurality of solid graphite (4 b 1) which are evenly distributed around the push-pull disc (4 b) in the axial direction, and two end faces of the solid graphite (4 b 1) are flush with two end faces of the push-pull disc (4 b).

7. The crank connecting rod end face grinding device according to claim 6, further comprising a fixed workbench (7) and an automatic unloading machine (8), wherein the precision indexing disc (1 a) is a hollow indexing disc, the fixed workbench (7) comprises a second upright post (7 a) arranged at the hollow part of the precision indexing disc (1 a) and a circular disc (7 b) fixedly arranged at the top end of the second upright post (7 a), the automatic unloading machine (8) is fixedly arranged on the circular disc (7 b), at least one automatic unloading machine (8) is arranged, the grinding machine (5) and the automatic unloading machine (8) are respectively arranged at two sides of the movable baffle plate (6), the automatic unloading machine (8) comprises a linear sliding table (8 a), a rotary driver (8 b), a first output end (8 c) and a second output end (8 d), the linear sliding table (8 a) is horizontally arranged and is fixedly connected with the circular disc (7 b), rotatory driver (8 b) fixed mounting is in the work portion of sharp slip table (8 a), and first output (8 c), second output (8 d) level set up side by side and rotatably install the work portion in sharp slip table (8 a), and under automatic off-load machine (8) operating condition, first output (8 c), second output (8 d) are connected with first threaded rod (3 d), second threaded rod (4 c) transmission respectively.

8. A crank connecting rod end face grinding device according to claim 7, characterized in that the first output end (8 c) and the second output end (8 d) each include a rotating shaft, a safety coupling and a hexagonal rod, the rotating shafts are rotatably mounted on the linear sliding table (8 a), the rotating shafts are in transmission connection with the output shaft of the rotary driver (8 b), the rotating shafts are in transmission connection with the hexagonal rods through the safety couplings, and the first threaded rod (3 d) and the second threaded rod (4 c) are provided with hexagonal table holes in transmission connection with the hexagonal rods.