阅读说明：本技术 一种金属粉末冶金制品烧结成型后精密加工方法 (Precision processing method for sintered and molded metal powder metallurgy product ) 是由 马闪 江恰 江然 于 2020-04-02 设计创作，主要内容包括：本发明涉及金属加工领域,特别涉及一种金属粉末冶金制品烧结成型后精密加工方法,其使用了一种精密加工装置,该精密加工装置包括固定基座、支撑架和活动架,支撑架固定连接在固定基座上,支撑架的顶部开设有一号限位槽,一号限位槽内开设有一号插槽,一号插槽内垂直固定连接有若干一号弹簧伸缩杆,一号插槽内插设有一号打磨块,一号打磨块的底部与一号弹簧伸缩杆的一端固定连接,固定基座上固定连接有固定架,固定架上并位于支撑架的上方固定连接有液压缸,液压缸的输出端固定连接有限位架,限位架上对称插设有限位滚轮。本发明结构简单,操作便捷,可以对阶梯轴型的金属粉末冶金制品进行充分的精密加工,适合推广。(The invention relates to the field of metal processing, in particular to a precision processing method of sintered and molded metal powder metallurgy products, which uses a precision processing device, wherein the precision processing device comprises a fixed base, a supporting frame and a movable frame, the supporting frame is fixedly connected on the fixed base, the top of the supporting frame is provided with a first limiting groove, a first slot is arranged in the first limiting groove, a plurality of first spring telescopic rods are vertically and fixedly connected in the first slot, a first polishing block is inserted in the first slot, the bottom of the first polishing block is fixedly connected with one end of the first spring telescopic rod, a fixed frame is fixedly connected on the fixed base, a hydraulic cylinder is fixedly connected on the fixed frame and positioned above the supporting frame, the output end of the hydraulic cylinder is fixedly connected with the limiting frame, and limiting idler wheels are symmetrically inserted on the limiting frame. The stepped shaft type metal powder metallurgy device is simple in structure, convenient and fast to operate, capable of fully and precisely processing stepped shaft type metal powder metallurgy products and suitable for popularization.)

1. The utility model provides a metal powder metallurgy goods sintering moulding back precision finishing method which has used a precision finishing device, and this precision finishing device includes fixed baseplate (1), support frame (2) and adjustable shelf (3), its characterized in that: the specific method for performing the precision processing operation on the metal powder metallurgy product by adopting the precision processing device is as follows:

s1, equipment checking: before the precise processing device is started to process the metal powder metallurgy product, the operation of the equipment is checked;

s2, placing a workpiece: placing the sintered and molded workpiece on the support frame (1) and the movable frame (3) of the precision machining device inspected in the step S1, and fixing the workpiece;

s3, precision machining: the movable frame (3) is operated to polish the workpiece which is fixed in the step S2, so that the precision machining is realized;

s4, collecting and stacking: taking down the workpiece subjected to the precision machining treatment in the step S3 from the support frame (2), and uniformly stacking;

the supporting frame (2) is fixedly connected to the fixed base (1), a first limiting groove (21) is formed in the top of the supporting frame (2), a first inserting groove (22) is formed in the first limiting groove (21), a plurality of first spring telescopic rods (23) are vertically and fixedly connected in the first inserting groove (22), a first polishing block (24) is inserted in the first inserting groove (22), and the bottom of the first polishing block (24) is fixedly connected with one end of the first spring telescopic rod (23);

a fixing frame (4) is fixedly connected to the fixing base (1), a hydraulic cylinder (41) is fixedly connected to the fixing frame (4) and located above the supporting frame (2), a limiting frame (42) is fixedly connected to the output end of the hydraulic cylinder (4), limiting idler wheels (43) are symmetrically inserted into the limiting frame (42), and the limiting idler wheels (43) are symmetrically arranged with the first limiting groove (21);

fixed baseplate (1) go up the symmetry seted up one spout (5), adjustable shelf (3) are all inserted and are established in spout (5), the top of adjustable shelf (3) is inserted and is equipped with expansion bracket (31), expansion bracket (31) are inserted and are established equal fixedly connected with spring (32) of one end in the adjustable shelf, No. two spacing grooves (33) have all been seted up at the top of adjustable shelf (3), No. two slot (34) of L type have all been seted up in No. two spacing grooves (33), No. two sanding block (35) that are equipped with the L type have all been inserted in No. two slot (34), equal horizontal fixedly connected with No. two spring telescopic links (36) in No. two slot (34), the equal fixed connection in one end of No. two spring telescopic links (36) is in No. two sanding block (35).

2. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 1, wherein the method comprises the following steps: the top of the first polishing block (24) and the outer side edge of the second polishing block (35) are both of inclined structures.

3. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 1, wherein the method comprises the following steps: bottom fixedly connected with biaxial structure's a rotating electrical machines (6) of support frame (2), the both ends of a rotating electrical machines (6) are all inserted and are equipped with threaded rod (61), threaded rod (61) are kept away from the one end of a rotating electrical machines (6) is all inserted and is established on fixed baseplate (1), the equal threaded connection in adjustable shelf (3) is in on threaded rod (61).

4. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 1, wherein the method comprises the following steps: the top fixed connection second rotating electrical machines (421) of spacing (42), the output of second rotating electrical machines (421) with the equal fixedly connected with gear (422) of one end of spacing gyro wheel (43), the cover is equipped with toothed belt (423) between gear (422).

5. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 1, wherein the method comprises the following steps: auxiliary rollers (211) are symmetrically inserted into the first limiting groove (21) and the second limiting groove (33).

6. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 1, wherein the method comprises the following steps: a first positioning plate (7) and a second positioning plate (8) are symmetrically arranged on the fixed base (1), the first positioning plate (7) and the second positioning plate (8) are inserted into the first sliding groove (5), one side of the first positioning plate (7) is fixedly connected with a third polishing block (71), the first positioning plate (7) is symmetrically provided with a second sliding groove (72), one side of the first positioning plate (7) is provided with a bracket (73), two ends of the bracket (73) are inserted into the second sliding groove (72), the second sliding groove (72) is internally and fixedly connected with a third spring telescopic rod (74), the top of the third spring telescopic rod (74) is fixedly connected with the bracket (73), the bracket (73) is respectively provided with a second auxiliary roller (75), and the bracket (73) is fixedly connected with a fourth polishing block (76), the structure of the second positioning plate (8) is consistent with that of the first positioning plate (7).

7. The method for precisely machining the sintered and molded metal powder metallurgy product according to claim 6, wherein the method comprises the following steps: one side of a first positioning plate (7) is fixedly connected with a fifth spring telescopic rod (77), one end, far away from the first positioning plate (7), of the fifth spring telescopic rod (77) is fixedly connected to the fixed base (1), a clamping block (81) is fixedly connected to the second positioning plate (8) in a symmetrical mode, a second spring (82) is fixedly connected to the top of the clamping block (81) in an equal mode, one end, far away from the second spring (82), of the clamping block (81) penetrates through the second positioning plate (8), the fixed base (1) is located below the second positioning plate (8) and is symmetrically provided with a plurality of clamping grooves (9), and the clamping block (81) is symmetrically arranged with the clamping grooves (9) and is inserted into the clamping grooves (9).

Technical Field

The invention relates to the field of metal processing, in particular to a precision processing method of a sintered and molded metal powder metallurgy product.

Background

Metal powder metallurgy is a process technology for supporting materials and products by metal powder by adopting a forming and sintering process, is a very common process technology in the field of modern metal processing, and is used for producing alloy products.

However, most products produced by the process technology are rough in surface, accompanied with some burrs or corner waste materials, cannot be directly used, and generally need to be precisely machined, but most products adopting metal powder metallurgy are irregular in shape, for example, stepped rotating shafts, the diameters of all parts of the stepped rotating shafts are completely different, the stepped rotating shafts not only have cambered surfaces, but also can generate large-area side sections at the joint of two sections of different diameters on the rotating shafts, the traditional precise machining cannot be met, manual polishing is often needed, labor and time are wasted, and the machining precision cannot be guaranteed.

Disclosure of Invention

In order to solve the problems, the invention provides a precision machining method for sintered and molded metal powder metallurgy products, which can carry out omnibearing precision machining on stepped rotating shafts, has high machining efficiency and ensures the machining precision.

In order to achieve the above object, the present invention adopts the following technical scheme, a precision processing method after sintering and forming of a metal powder metallurgy product uses a precision processing device, the precision processing device comprises a fixed base, a supporting frame and a movable frame, and the specific method when the precision processing device is used for carrying out precision processing operation on the metal powder metallurgy product is as follows:

s1, equipment checking: before the precise processing device is started to process the metal powder metallurgy product, the operation of the equipment is checked;

s2, placing a workpiece: placing the sintered workpiece on the support frame and the movable frame of the precision machining device inspected in the step S1, and fixing the workpiece;

s3, precision machining: operating the movable frame to polish the workpiece fixed in the step S2 to realize precision machining;

s4, collecting and stacking: taking down the workpiece subjected to the precision machining treatment in the step S3 from the support frame, and uniformly stacking the workpiece;

the supporting frame is fixedly connected to the fixed base, a first limiting groove is formed in the top of the supporting frame, a first inserting groove is formed in the first limiting groove, a plurality of first spring telescopic rods are vertically and fixedly connected into the first inserting groove, a first polishing block is inserted into the first inserting groove, the bottom of the first polishing block is fixedly connected with one end of each first spring telescopic rod, the supporting frame is used for placing a stepped shaft, and the surface of the first polishing block can be polished while the stepped shaft rotates, so that precise machining is realized;

the fixed base is fixedly connected with a fixed frame, a hydraulic cylinder is fixedly connected onto the fixed frame and positioned above the supporting frame, the output end of the hydraulic cylinder is fixedly connected with a limiting frame, limiting rollers are symmetrically inserted into the limiting frame, the limiting rollers are symmetrically arranged with the first limiting groove, and the limiting rollers are used for driving the stepped shaft to rotate;

the fixed baseplate on the symmetry seted up a spout, the adjustable shelf all inserts and establishes in the spout, the top of adjustable shelf is inserted and is equipped with the expansion bracket, the expansion bracket is inserted and is established the equal fixedly connected with spring of one end in the adjustable shelf, No. two spacing grooves have all been seted up at the top of adjustable shelf, No. two slots of L types have all been seted up to No. two spacing inslots, all insert the No. two sanding block that is equipped with the L type in No. two slots, equal horizontal fixedly connected with No. two spring telescopic links in No. two slots, the equal fixed connection of one end of No. two spring telescopic links is in No. two sanding blocks are last, the adjustable shelf is polished to the different diameter positions of step shaft through the removal.

As a preferable technical scheme of the invention, the top of the first grinding block and the outer side edge of the second grinding block are both inclined structures.

As a preferred technical scheme of the invention, the bottom of the support frame is fixedly connected with a first rotating motor with a biaxial structure, threaded rods are inserted into two ends of the first rotating motor, one end of each threaded rod, which is far away from the first rotating motor, is inserted into the fixed base, and the movable frames are all in threaded connection with the threaded rods.

As a preferred technical scheme of the invention, the top of the limiting frame is fixedly connected with a second rotating motor, the output end of the second rotating motor and one end of the limiting roller are both fixedly connected with gears, and a gear belt is sleeved between the gears.

As a preferred technical scheme of the invention, auxiliary rollers are symmetrically inserted into the first limiting groove and the second limiting groove.

According to a preferred technical scheme, a first positioning plate and a second positioning plate are symmetrically arranged on a fixed base, the first positioning plate and the second positioning plate are inserted into a first sliding groove, a third polishing block is fixedly connected to one side of the first positioning plate, a second sliding groove is symmetrically formed in the first positioning plate, a bracket is arranged on one side of the first positioning plate, two ends of the bracket are inserted into the second sliding groove, a third spring telescopic rod is fixedly connected to the second sliding groove, the top of the third spring telescopic rod is fixedly connected with the bracket, a second auxiliary roller is inserted into the bracket, a fourth polishing block is fixedly connected to the bracket, and the structure of the second positioning plate is consistent with that of the first positioning plate.

As a preferred technical scheme of the invention, one side of the first positioning plate is fixedly connected with a fifth spring telescopic rod, one end of the fifth spring telescopic rod, which is far away from the first positioning plate, is fixedly connected to the fixed base, the second positioning plate is internally and symmetrically and fixedly connected with a clamping block, the top of the clamping block is fixedly connected with a second spring, one end of the clamping block, which is far away from the second spring, penetrates through the second positioning plate, a plurality of clamping grooves are symmetrically formed in the fixed base and below the second positioning plate, and the clamping blocks are symmetrically arranged with the clamping grooves and inserted into the clamping grooves.

The invention has the beneficial effects that:

1. the invention can carry out omnibearing precision machining on the stepped rotating shaft, has high machining efficiency and simultaneously ensures the machining precision.

2. The movable frame is designed, the movable frame drives the second punching module to grind parts with different diameters of the stepped shaft through movement, and meanwhile, the L type second punching module can grind the surface of the stepped shaft and simultaneously grind the cross section of the stepped shaft synchronously, so that the efficiency and the quality of precision machining are improved.

3. The second positioning plate is designed, can be fixed, can be matched with the first positioning plate in a telescopic arrangement to realize the precise machining of stepped shafts with different lengths, and can be adapted to stepped shafts with different lengths at two ends.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged partial schematic view of the invention at A of FIG. 2;

FIG. 4 is a schematic side view of the present invention;

FIG. 5 is a schematic view of a partial cross-sectional structure of the support frame of the present invention;

FIG. 6 is a schematic view of the present invention showing a partial cross-sectional structure of a movable frame;

FIG. 7 is a cross-sectional structural schematic view of the bracket of the present invention;

FIG. 8 is a schematic view of a second positioning plate according to the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

As shown in fig. 1 to 8, a precision machining method after sintering and forming of a metal powder metallurgy product uses a precision machining device, the precision machining device comprises a fixed base 1, a support frame 2 and a movable frame 3, and the precision machining method for the metal powder metallurgy product by using the precision machining device is as follows:

s1, equipment checking: before the precise processing device is started to process the metal powder metallurgy product, the operation of the equipment is checked;

s2, placing a workpiece: placing the sintered workpiece on the support frame 1 and the movable frame 3 of the precision machining apparatus inspected in the step S1, and fixing the workpiece;

s3, precision machining: the movable frame 3 is operated to polish the workpiece which is fixed in the step S2, so that the precision machining is realized;

s4, collecting and stacking: taking down the workpiece subjected to the precision machining in the step S3 from the support frame 2, and uniformly stacking the workpiece;

the supporting frame 2 is fixedly connected to the fixing base 1, the top of the supporting frame 2 is provided with a first limiting groove 21, a first slot 22 is formed in the first limiting groove 21, a plurality of first spring telescopic rods 23 are vertically and fixedly connected in the first slot 22, a first polishing block 24 is inserted in the first slot 22, the bottom of the first polishing block 24 is fixedly connected with one end of the first spring telescopic rods 23, the supporting frame 2 is used for supporting a stepped shaft, the first limiting groove 21 is used for placing the stepped shaft, the surface of the first polishing block 24 can be polished when the stepped shaft rotates, and the first spring telescopic rods 23 are matched with the first slot 22 to realize self-adaptive adjustment of the first polishing block 24;

auxiliary rollers 6 are symmetrically inserted into the first limiting groove 21 and the second limiting groove 33, and the auxiliary rollers 6 are used for assisting the limiting rollers 43 to rotate the stepped shaft.

The top of the first polishing block 24 and the outer side edge of the second polishing block 35 are both inclined structures, and the first polishing block 24 and the second polishing block 35 which are inclined structures can improve polishing effects.

The fixed base 1 is fixedly connected with a fixed frame 4, the fixed frame 4 is fixedly connected with a hydraulic cylinder 41 above the support frame 2, the output end of the hydraulic cylinder 4 is fixedly connected with a limiting frame 42, limiting idler wheels 43 are symmetrically inserted on the limiting frame 42, the limiting idler wheels 43 are symmetrically arranged with a first limiting groove 21, the hydraulic cylinder 41 on the fixed frame 4 is used for lifting the limiting frame 42, and the limiting idler wheels 43 on the limiting frame 42 are used for fixing the stepped shaft and driving the stepped shaft to rotate;

no. two rotating electrical machines 421 of top fixed connection of spacing 42, the equal fixedly connected with gear 422 of one end of output and spacing gyro wheel 43 of No. two rotating electrical machines 421, the cover is equipped with toothed belt 423 between gear 422, and No. two rotating electrical machines 421 cooperation gear 422 and toothed belt 423 can drive spacing gyro wheel 43 rotatory.

Sliding groove 5 has been seted up to the last symmetry of fixed baseplate 1, adjustable shelf 3 is all inserted and is established in sliding groove 5, expansion bracket 31 has been inserted at adjustable shelf 3's top, the equal fixedly connected with spring 32 of one end that expansion bracket 31 was inserted and is established in the adjustable shelf, No. two spacing grooves 33 have all been seted up at adjustable shelf 3's top, No. two slots 34 of L type have all been seted up in No. two spacing grooves 33, No. two sanding block 35 that L type has all been inserted in No. two slots 34, equal horizontal fixedly connected with No. two spring telescopic links 36 in No. two slots 34, the equal fixed connection of one end of No. two spring telescopic links 36 is on No. two sanding block 35, a sliding groove 5 is used for realizing adjustable shelf 3's removal, expansion bracket 31 can make No. two spacing grooves 33 have the self-adaptation effect, make it contact with the step shaft all the time, cooperation No. two sanding block 35 can realize polishing the position of the different diameters of step shaft, No. L type No. two sanding block 35 can realize polishing the epaxial side tangent planes of step shaft and polish.

The bottom fixedly connected with biaxial structure's of support frame 2 rotating electrical machines 5, threaded rod 51 has all been inserted at the both ends of a rotating electrical machines 5, and threaded rod 51 keeps away from a rotating electrical machines 5 one end and all inserts and establish on fixed baseplate 1, and the equal threaded connection of adjustable shelf 3 is on threaded rod 51, and the removal of adjustable shelf 3 can be realized to a rotating electrical machines 5 rotating threaded rod 51.

A first positioning plate 7 and a second positioning plate 8 are symmetrically arranged on a fixed base 1, the first positioning plate 7 and the second positioning plate 8 are inserted in a first sliding groove 5, one side of the first positioning plate 7 is fixedly connected with a third polishing block 71, the first positioning plate 7 is symmetrically provided with a second sliding groove 72, one side of the first positioning plate 7 is provided with a bracket 73, two ends of the bracket 73 are inserted in the second sliding groove 72, a third spring telescopic rod 74 is fixedly connected in the second sliding groove 72, the top of the third spring telescopic rod 74 is fixedly connected with the bracket 73, a second auxiliary roller 75 is inserted in the bracket 73, a fourth polishing block 76 is fixedly connected on the bracket 73, the structure of the second positioning plate 8 is consistent with that of the first positioning plate 7, the first positioning plate 7 and the second positioning plate 8 are used for positioning and fixing two ends of a step shaft, the third polishing block 71 is used for polishing two ends of the step shaft, no. two chutes 72 are used for realizing self-adaptive adjustment of bracket 73, bracket 73 is used for improving the stability of the precision machining of the stepped shaft, and No. four polishing blocks 76 can polish the part of the stepped shaft inserted in bracket 73 in cooperation with No. two auxiliary rollers 75, so that the omnibearing precision machining of the stepped shaft is realized.

One side of the first positioning plate 7 is fixedly connected with a fifth spring telescopic rod 76, one end of the fifth spring telescopic rod 76, which is far away from the first positioning plate 7, is fixedly connected to the fixed base 1, a fixture block 81 is symmetrically and fixedly connected in the second positioning plate 8, the top of the fixture block 81 is fixedly connected with a second spring 82, one end of the fixture block 81, which is far away from the second spring 82, penetrates through the second positioning plate 8, a plurality of clamping grooves 9 are symmetrically formed in the fixed base 1 and below the second positioning plate 8, the fixture block 81 is symmetrically arranged with the clamping grooves 9 and inserted in the clamping grooves 9, the fixture block 81 can be matched with the clamping grooves 9 to fix the second positioning plate 8, and the fifth spring telescopic rod 76 is used for adjusting the first positioning plate 7, through adjusting No. two locating plates 8, the fixing of the step shaft of different length can be realized to locating plate 7 of cooperation, also can realize the fixing to the step shaft that both ends length differs simultaneously.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.