CN212122775U

CN212122775U - Crankshaft polishing machine

Info

Publication number: CN212122775U
Application number: CN202020588153.3U
Authority: CN
Inventors: 臧宏臻; 臧伟; 李智; 管仲嵩
Original assignee: Liaoning Kechuang Heavy Internal Combustion Engine Crankshaft Co ltd
Current assignee: Liaoning Kechuang Heavy Internal Combustion Engine Crankshaft Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-11
Anticipated expiration: 2030-04-20

Abstract

The utility model relates to a bent axle burnishing machine, including base, rotary drive mechanism and polishing mechanism, its technical essential is: the polishing mechanism comprises a spindle neck polishing unit and a connecting rod neck polishing unit, wherein the spindle neck polishing unit comprises a horizontal supporting rod, a vertical rod arranged at one end of the horizontal supporting rod, an upper expanding fastening piece and a lower expanding fastening piece which are respectively connected with the upper end and the lower end of the vertical rod, an abrasive belt I arranged between the upper expanding fastening piece and the lower expanding fastening piece, the connecting rod neck polishing unit comprises a supporting lug fixed on the top surface of a polishing supporting seat, a supporting arm hinged with the supporting lug, a pressing rod connected with the tail end of the supporting arm, a front expanding fastening piece and a rear expanding fastening piece arranged at two ends of the pressing rod, an abrasive belt II arranged between the front expanding fastening piece and the rear expanding fastening piece, and. The machine solves the problems of low polishing speed and low polishing quality existing in the existing manual operation, ensures the consistency of products and improves the production efficiency.

Description

Crankshaft polishing machine

Technical Field

The utility model relates to a bent axle processing equipment technical field, concretely relates to bent axle burnishing machine.

Background

The crankshaft is an important accessory on the engine and plays a role in outputting power of the engine. An important indicator of the quality of the crankshaft is the surface roughness of the crankshaft diameter. If the use requirement cannot be met, the destructive accidents of tile burning, tile melting and the like of the engine are easily caused, and the whole engine is scrapped when the whole engine is serious. In order to improve the quality of the surface roughness, the spindle journal and the connecting rod journal are usually subjected to polishing treatment.

In the prior art, the polishing of some workpieces with smaller structures and irregular shapes is purely manual operation, namely, the workpieces are fixed on a processing table, then abrasive belts are held by hands to polish the workpieces, the polishing time of the workpieces and the pressure of the abrasive belts cannot be accurately mastered due to the fact that the workpieces are polished manually, the polishing speed is low, in addition, the polishing time of each area of the workpieces is different, the pressure of the abrasive belts is different, and therefore the polishing of each area is uneven, and the quality of the workpieces is affected.

Disclosure of Invention

The utility model aims at providing a simple structure, use reliable bent axle burnishing machine, solve the problem that the polishing rate that current manual operation exists is slow, polishing quality is low, guarantee the uniformity of product, improve production efficiency.

The technical scheme of the utility model is that:

the utility model provides a bent axle burnishing machine, includes the base, locates rotary drive mechanism and polishing mechanism on the base, its technical essential is: the polishing mechanism comprises a spindle journal polishing unit and a connecting rod journal polishing unit, wherein the spindle journal polishing unit comprises a horizontal supporting rod, a vertical rod arranged at one end of the horizontal supporting rod, an upper expanding member and a lower expanding member which are respectively connected with the upper end and the lower end of the vertical rod, and an abrasive belt I arranged between the upper expanding member and the lower expanding member, the other end of the horizontal supporting rod is inserted into the polishing supporting seat and fixed, one end of the abrasive belt I is fixedly connected with the upper end of the vertical rod after bypassing the upper expanding member, the other end of the abrasive belt I is fixedly connected with the lower end of the vertical rod after bypassing the lower expanding member, the connecting rod journal polishing unit comprises a supporting lug fixed on the top surface of the polishing supporting seat, a supporting arm hinged with the supporting lug, a pressing rod connected with the tail end of the supporting arm, a front expanding member and a rear expanding, And one end of the second abrasive belt is fixedly connected with the front end of the pressing rod after bypassing the front tensioning part, and the other end of the second abrasive belt is fixedly connected with the rear end of the pressing rod after bypassing the rear tensioning part.

In the crankshaft polishing machine, the positions of the side surfaces of the polishing supporting seats, corresponding to the horizontal supporting rods, are provided with the insertion holes and the two radial through holes communicated with the insertion holes, the horizontal supporting rods are provided with the plurality of positioning holes corresponding to the radial through holes, the positioning rods are inserted into the radial through holes and the positioning holes after corresponding to each other so as to avoid rotating the horizontal supporting rods, and the extension lengths of the horizontal supporting rods are conveniently adjusted due to the arrangement of the plurality of positioning holes.

Foretell bent axle burnishing machine, polishing supporting seat top surface corresponds and supports the ear position and be equipped with the recess, the length of recess is greater than the length that supports the ear bottom plate, and the recess bottom surface is equipped with the regulation hole that is used for fixed stay ear bottom plate to do benefit to the regulation and support the ear in the position of polishing supporting seat, in order to adapt to the polishing operation demand.

Foretell bent axle burnishing machine, the upper and lower tight piece that rises is the piece of bending that the dog-ear is the acute angle respectively, and inflection point one side is equipped with the horizontal grafting portion I of being connected with the pole setting, and the inflection point opposite side is equipped with I complex spacing groove I in abrasive band.

In the crankshaft polishing machine, the front expansion piece and the rear expansion piece are respectively bending pieces with acute bending angles, one side of the inflection point is provided with the horizontal insertion part II connected with the pressing rod, and the other side of the inflection point is provided with the limiting groove II matched with the abrasive belt II.

According to the crankshaft polishing machine, the end parts of the abrasive belt I and the abrasive belt II are respectively provided with the fixed pressing sheets so as to increase the contact area with the abrasive belt and realize strong fixation of the abrasive belt.

Foretell bent axle burnishing machine, the support arm is the arch to avoid taking place to interfere.

According to the crankshaft polishing machine, the counterweight weight component consists of the limiting rod fixed with the pressing rod and counterweight weights sleeved on the limiting rod, and the pressure of the abrasive belt II on the connecting rod shaft neck is adjusted by changing the number of the counterweight weights.

In the crankshaft polishing machine, the number of the spindle journal polishing units and the number of the connecting rod journal polishing units are respectively multiple, and the spindle journal polishing units and the connecting rod journal polishing units are alternately arranged along the length direction of the polishing supporting seat.

The utility model has the advantages that:

through setting up main shaft journal polishing unit and connecting rod journal polishing unit, when rotary driving mechanism drives the bent axle rotation, polish main shaft journal and connecting rod journal respectively, work efficiency is high, and polishing pressure is even, and polishing quality is high, has guaranteed the uniformity of product.

Drawings

Fig. 1 is a partial structural schematic diagram of the present invention;

FIG. 2 is a schematic view of the assembly structure of the spindle journal polishing unit and the connecting rod journal polishing unit of the present invention;

FIG. 3 is a schematic structural diagram of a connecting rod journal polishing unit according to the present invention;

fig. 4 is a view from a in fig. 3.

In the figure: 1. the automatic polishing machine comprises a base, 2 parts of a fixed seat, 3 parts of a servo motor speed reducer, 4 parts of a driving head, 5 parts of a bearing, 6 parts of a positioning tip, 7 parts of a clamping jaw, 8 parts of a polishing supporting seat, 9 parts of a jack, 10 parts of a supporting arm, 11 parts of a supporting lug, 12 parts of a tip tail, 13 parts of a groove, 14 parts of a sliding chute, 15 parts of a supporting vertical plate, 16 parts of a pressing rod, 17 parts of a counterweight weight, 18 parts of a limiting rod, 19 parts of a fixed pressing plate, 20 parts of a front expansion fastening piece, 21 parts of a connecting rod shaft neck, 22 parts of an abrasive belt II, 23 parts of a main shaft neck, 24 parts of an upper expansion fastening piece, 25 parts of an abrasive belt I, 26 parts of a lower expansion fastening piece, 27 parts of.

Detailed Description

As shown in fig. 1-4, the crankshaft polishing machine includes a base 1, a rotation driving mechanism disposed on the base 1, and a polishing mechanism.

Wherein, base 1 one side is equipped with and supports riser 15 and support the riser 15 and be equipped with polishing supporting seat 8. The polishing mechanism is composed of a plurality of spindle journal polishing units and a plurality of connecting rod journal polishing units which are alternately arranged along the length direction of the polishing supporting seat 8.

The spindle journal polishing unit comprises a horizontal support rod 29, a vertical rod 28 arranged at one end of the horizontal support rod 29, upper and lower expanding

members

24 and 26 respectively connected with the upper and lower ends of the vertical rod 28, and an abrasive belt I25 arranged between the upper and lower expanding

members

24 and 26, wherein the other end of the horizontal support rod 29 is inserted into and fixed on the polishing support seat 8, one end of the abrasive belt I25 bypasses the upper expanding member 24 and then is connected and fixed with the upper end of the vertical rod 28, and the other end of the abrasive belt I25 bypasses the lower expanding member 26 and then is connected and fixed with the lower end of the vertical rod 28. The side surface of the polishing support seat 8 corresponding to the horizontal support rod 29 is provided with an insertion hole 9 and two radial through holes 31 communicated with the insertion hole 9, the horizontal support rod 29 is provided with a plurality of positioning holes corresponding to the radial through holes 31, and the positioning rods (omitted in the figure) are inserted after the radial through holes 31 and the positioning holes correspond to each other so as to avoid the rotation of the horizontal support rod 29, and the extension length of the horizontal support rod can be conveniently adjusted due to the arrangement of the plurality of positioning holes. The upper and

lower tensioning members

24 and 26 are respectively bending members with acute bending angles, one side of the bending point is provided with a horizontal inserting part I connected with the vertical rod 28, and the other side of the bending point is provided with a limiting groove I matched with the abrasive belt I25.

The connecting rod journal polishing unit comprises a supporting lug 11 fixed on the top surface of a polishing supporting seat 8, a supporting arm 10 hinged with the supporting lug 11, a pressing rod 16 connected with the tail end of the supporting arm 10, front and

rear tensioning members

20 and 30 arranged at two ends of the pressing rod 16, an abrasive belt II 22 arranged between the front and

rear tensioning members

20 and 30, and a counterweight weight assembly arranged at the upper part of the front end of the pressing rod 16, wherein one end of the abrasive belt II 22 bypasses the front tensioning member 20 and is connected and fixed with the front end of the pressing rod 16, and the other end of the abrasive belt II 22 bypasses the rear tensioning member 30 and is connected and fixed with the rear end of the pressing rod 16. 8 top surfaces of polishing supporting seat correspond and support ear 11 positions and be equipped with recess 13, the length of recess 13 is greater than the length of supporting ear 11 bottom plates, and recess 13 bottom surface is equipped with the regulation hole that is used for the fixed stay ear bottom plate to do benefit to the regulation and support the position of ear at the polishing supporting seat, in order to adapt to the polishing operation demand. The front tensioning member 20 and the rear tensioning member 30 are respectively bending members with acute bending angles, one side of the bending point is provided with a horizontal inserting part II connected with the pressing rod 16, and the other side of the bending point is provided with a limiting groove II matched with the abrasive belt II 22. And the end parts of the abrasive belt I25 and the abrasive belt II 22 are respectively provided with a fixing pressing sheet 27 and a fixing pressing sheet 19 so as to increase the contact area with the abrasive belt and realize strong fixation of the abrasive belt. The support arm 10 is arched to avoid interference. The counterweight weight component consists of a limiting rod 18 fixed with the pressing rod 16 and counterweight weights 17 sleeved on the limiting rod 18, and the pressure of the abrasive belt II 22 on the connecting rod shaft neck 21 is adjusted by changing the number of the counterweight weights 17.

The rotary driving mechanism is composed of a driving head and a centre tail 12, the driving head comprises a fixed seat 2, a driving head 4 assembled on the fixed seat 2 by a bearing 5, and a servo motor reducer 3 connected with the driving head 4, a positioning point 6 corresponding to the centre tail 12 is arranged at the center of the front end of the driving head 4, a plurality of clamping grooves are uniformly arranged on the periphery of the driving head 4, and a plurality of clamping claws 7 are assembled by the clamping grooves. The base 1 is provided with a sliding chute 14 corresponding to the driving machine head and the tip machine tail.

When the polishing device is used, firstly, the crankshaft to be polished is clamped by the driving machine head and the tip machine tail 12, the abrasive belt I25 of the spindle journal polishing unit is in close contact with the spindle journal 23 of the crankshaft to be polished, and the abrasive belt II 22 of the connecting rod journal polishing unit is in close contact with the connecting rod journal 21 of the crankshaft to be polished; then, the servo motor reducer 3 is started to drive the crankshaft to be polished to rotate, the abrasive belt I25 and the abrasive belt II 22 polish the spindle journal 23 and the connecting rod journal 21 respectively, and the abrasive belt I25 and the abrasive belt II 22 are convenient to maintain. The device is particularly suitable for small enterprises and has low use and maintenance cost.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The utility model provides a bent axle burnishing machine, includes the base, locates rotary drive mechanism and polishing mechanism on the base, its characterized in that: the polishing mechanism comprises a spindle journal polishing unit and a connecting rod journal polishing unit, wherein the spindle journal polishing unit comprises a horizontal supporting rod, a vertical rod arranged at one end of the horizontal supporting rod, an upper expanding member and a lower expanding member which are respectively connected with the upper end and the lower end of the vertical rod, and an abrasive belt I arranged between the upper expanding member and the lower expanding member, the other end of the horizontal supporting rod is inserted into the polishing supporting seat and fixed, one end of the abrasive belt I is fixedly connected with the upper end of the vertical rod after bypassing the upper expanding member, the other end of the abrasive belt I is fixedly connected with the lower end of the vertical rod after bypassing the lower expanding member, the connecting rod journal polishing unit comprises a supporting lug fixed on the top surface of the polishing supporting seat, a supporting arm hinged with the supporting lug, a pressing rod connected with the tail end of the supporting arm, a front expanding member and a rear expanding, And one end of the second abrasive belt is fixedly connected with the front end of the pressing rod after bypassing the front tensioning part, and the other end of the second abrasive belt is fixedly connected with the rear end of the pressing rod after bypassing the rear tensioning part.

2. The crankshaft polisher of claim 1, wherein: the polishing support seat is characterized in that a jack and two radial through holes communicated with the jack are formed in the side face of the polishing support seat corresponding to the horizontal support rod, a plurality of positioning holes corresponding to the radial through holes are formed in the horizontal support rod, positioning rods are inserted into the radial through holes and the positioning holes after corresponding to each other so as to avoid rotation of the horizontal support rod, and the plurality of positioning holes are arranged to facilitate adjustment of the extending length of the horizontal support rod.

3. The crankshaft polisher of claim 1, wherein: the polishing supporting seat top surface corresponds and supports the ear position and be equipped with the recess, the length of recess is greater than the length that supports the ear bottom plate, and the recess bottom surface is equipped with the regulation hole that is used for fixed support ear bottom plate.

4. The crankshaft polisher of claim 1, wherein: the upper and lower expanding members are respectively bending members with acute bending angles, one side of the inflection point is provided with a horizontal inserting part I connected with the vertical rod, and the other side of the inflection point is provided with a limiting groove I matched with the abrasive belt I.

5. The crankshaft polisher of claim 1, wherein: the front and rear expanding pieces are respectively bending pieces with acute bending angles, one side of the inflection point is provided with a horizontal inserting part II connected with the pressing rod, and the other side of the inflection point is provided with a limiting groove II matched with the abrasive belt II.

6. The crankshaft polisher of claim 1, wherein: and the end parts of the abrasive belt I and the abrasive belt II are respectively provided with a fixed pressing sheet.

7. The crankshaft polisher of claim 1, wherein: the support arm is arch-shaped.

8. The crankshaft polisher of claim 1, wherein: the counterweight weight component consists of a limiting rod fixed with the pressing rod and a counterweight sleeved on the limiting rod.

9. The crankshaft polisher of claim 1, wherein: the number of the spindle journal polishing units and the number of the connecting rod journal polishing units are respectively multiple and are alternately arranged along the length direction of the polishing supporting seat.