CN113894510B - Method for processing crushing roller - Google Patents
Method for processing crushing roller Download PDFInfo
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- CN113894510B CN113894510B CN202111305858.5A CN202111305858A CN113894510B CN 113894510 B CN113894510 B CN 113894510B CN 202111305858 A CN202111305858 A CN 202111305858A CN 113894510 B CN113894510 B CN 113894510B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/12—Cutters specially designed for producing particular profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
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Abstract
The invention discloses a method for processing a crushing roller, which comprises the following steps: step S1: machining an inner hole in the workpiece; step S2: processing a first groove on the outer circumference of the workpiece; and step S3: mounting the workpiece on a machining center; and step S4: processing a second groove on the outer circumference of the workpiece by adopting a cutter group; step S5: processing a third groove on the outer circumference of the workpiece to obtain a crushing roller; in the step S4, the second groove is a V-shaped groove, and the included angle between two inner side walls of the V-shaped groove is theta 1 (ii) a The tool set comprises a tool A for rough machining and a tool B for finish machining, and the cutting angle of the tool A and the cutting angle of the tool B are defined as theta 2 (ii) a Theta of the second groove to be processed of the present invention 1 Angle bisector of (a) and 2 the angle bisectors are overlapped, the requirements of the machining positions of the cutter A and the cutter B can be met, the using times of finish machining cutters can be effectively reduced, the service life of the cutter B is prolonged, and the cutter cost is reduced.
Description
Technical Field
The invention relates to the technical field of production of crushing rollers, in particular to a processing method of a crushing roller.
Background
The ensilage machine crushing roller is used for extruding and kneading materials, so that the materials are fully crushed, and three different track grooves, namely a straight groove, an inclined groove and a spiral groove, are formed in the crushing roller.
The problem that exists in current crushing roller processing manufacturing is: 1. the finish machining tool has a plurality of use times, so that the service life of the finish machining tool is short; 2. generally, a five-axis machine tool is matched with a nonstandard cutter for machining, and the machining method has high requirements on the machine tool; 3. the cutter is difficult to manufacture and high in cost.
In view of the above, there is a need for a method for machining a crushing roller to solve the problems of the prior art, such as the short life of the tool and the high requirement of the machine tool.
Disclosure of Invention
The invention aims to provide a crushing roller processing method to solve the problems of short service life of a cutter and high requirement on a machine tool in the prior art, and the specific technical scheme is as follows:
a method for processing a crushing roller comprises the following steps:
step S1: processing an inner hole on a workpiece;
step S2: processing a first groove on the outer circumference of the workpiece;
and step S3: mounting the workpiece on a machining center;
and step S4: machining a second groove on the outer circumference of the workpiece by adopting a cutter group;
step S5: processing a third groove on the outer circumference of the workpiece to obtain a crushing roller;
in the step S4, the second groove is a V-shaped groove, and the included angle between two inner side walls of the V-shaped groove is theta 1 (ii) a The tool set comprises a tool A for rough machining and a tool B for finish machining, and the cutting angle of the tool A and the cutting angle of the tool B are defined as theta 2 Theta of the second groove to be machined during cutting 1 Angle bisector of (a) and 2 the bisectors of (a) coincide.
Preferably, in the technical scheme, the step S1 includes roughly turning an inner hole on the workpiece; and S6, performing heat treatment on the workpiece, and then performing finish machining on the inner hole.
Preferably, in the step S2, the first groove is formed along a circumferential direction of the workpiece.
Preferred of the above technical means, theta 1 Equal to 30-60.
Preferably, the cutter A and the cutter B are thread milling cutters, and the theta of the cutter B is 2 Is equal to theta 1 。
Preferably, in the technical scheme, the length direction of the second groove is inclined to the axial direction of the workpiece; the machining center is a vertical machining center provided with a rotary table, and the workpiece is horizontally arranged on the rotary table of the vertical machining center.
Preferably, in step S5, an included angle between the bottom surface and the side surface of the third groove is θ 3 ，θ 3 Greater than or equal to 90 degrees;
the machining of the third groove comprises rough machining: and (3) roughly machining the third groove by adopting three cutters with sequentially reduced specifications, wherein the specifications of the cutters meet the following rules: the first cutter specification is consistent with the opening width of the third groove, the second cutter can finish 40-50% of the groove shape residual processing amount of the third groove after the first cutter is processed, and the third cutter specification is smaller than the bottom surface width of the third groove.
Preferably, in the above technical scheme, the processing of the third groove further comprises finish machining the third groove by using a tool C, and the cutting part of the tool C is matched with the groove shape of the third groove.
According to the preferable technical scheme, the cutter B is used for deburring the second groove, the cutter B is far away from the second groove by 0.1-0.2m along the Y-axis direction of the vertical machining center, the Y-axis direction is perpendicular to the axial direction of the workpiece, and the Y-axis direction is parallel to the horizontal line.
Preferably, the third groove is spirally arranged on the outer circumference of the workpiece along the axial direction of the workpiece.
The technical scheme of the invention has the following beneficial effects:
(1) The invention relates to a method for processing a crushing roller, which comprises the following steps: step S1: processing an inner hole on a workpiece; step S2: processing a first groove on the outer circumference of the workpiece; and step S3: mounting the workpiece on a machining center; and step S4: machining a second groove on the outer circumference of the workpiece by adopting a cutter group; step S5: processing a third groove on the outer circumference of the workpiece to obtain a crushing roller; in the step S4, the second groove is a V-shaped groove, and the included angle between the two inner side walls of the V-shaped groove is theta 1 (ii) a The tool set comprises a tool A for rough machining and a tool B for finish machining, and the cutting angle of the tool A and the cutting angle of the tool B are defined as theta 2 (ii) a Theta of the second groove to be processed of the present invention 1 Angle bisector of (a) and 2 the angle bisectors are overlapped, the requirements of the machining positions of the cutter A and the cutter B can be met, the using times of a finish machining cutter (the cutter B) can be effectively reduced, the service life of the cutter B is prolonged, and the cutter cost is reduced.
(2) The cutter A and the cutter B adopted by the crushing roller processing method are thread milling cutters, and the cutter A (standard cutter) can reduce the processing allowance to the maximum extent, so that the using times of the cutter B (non-standard cutter) are reduced. And by changing theta of the tool B 2 Angle bisector of (a) and 1 the angle bisectors are overlapped, so that the design difficulty of the cutter B (a non-standard cutter) can be effectively reduced, the manufacturing cost of the cutter is reduced, and the processing cost of the crushing roller is further reduced.
(3) The length direction of the second groove is arranged in an inclined manner along the axial direction of the workpiece, the machining center is a vertical machining center provided with a rotary table, the machining method is matched with the vertical machining center, the requirement on a machine tool during machining of the crushing roller can be lowered, only a linear machining program needs to be programmed, and the cutter (the cutter A and the cutter B) is matched with the workpiece to move at a specific speed along the axial direction of the workpiece through rotation of the workpiece around the axial direction of the workpiece, so that the machining of the second groove is completed with a very small data volume.
(4) The invention adopts three cutters with successively reduced specifications to carry out rough machining on the third groove, has high rough machining efficiency, reduces the finish machining allowance of the third groove to the maximum extent, prolongs the service life of a finish machining cutter (namely the cutter C), reduces the cutter cost and improves the machining efficiency.
(5) When the second groove is deburred, the cutter B is 0.1-0.2mm away from the second groove along the Y-axis direction, so that burrs generated at the joint part due to the processing of the third groove are removed while the machined second groove is prevented from being touched.
(6) The inner hole of the invention is assembled with the vertical machining center, the coaxiality and the precision are ensured, the inner hole needs to be roughly machined in order to prevent the workpiece from deforming after heat treatment, and the inner hole is finely machined in place after heat treatment.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
In the drawings:
FIG. 1 is a schematic view of a first groove, a second groove, a third groove and a workpiece according to the present embodiment;
FIG. 2 is a schematic cross-sectional view of the third groove of FIG. 1;
FIG. 3 is a schematic view of the first groove and slitting knife of FIG. 1;
FIG. 4 is a side view of a second groove;
FIG. 5 is an enlarged view of A in FIG. 4;
FIG. 6 is a horizontal side view of cutter A and a second groove;
FIG. 7 is an enlarged view of B in FIG. 6;
FIG. 8 is a schematic view of tool B and a second groove;
FIG. 9 is a schematic view of a third flute and three cutters of successively decreasing gauge;
FIG. 10 is a schematic view of the construction of the tool C;
wherein, 1, a first groove; 2. a second groove; 3. a third groove; 4. a workpiece; 5. a grooving cutter; 6. a cutter A; 7. a cutter B; 8. a cutter C;8.1, a cutting part.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example (b):
in a crushing roller processing method, as shown in FIG. 1, the processing method of this embodiment is to process a first groove 1, a second groove 2 and a third groove 3 on the outer circumference of a workpiece 4,
as shown in fig. 1, a first groove (straight groove) is provided on the outer circumference of the workpiece in the circumferential direction of the workpiece;
as shown in fig. 1, the length direction of the second groove (chute, the cross section of which is V-shaped) is inclined from the axial direction of the workpiece, the specific inclined angle is determined according to actual conditions, and the preferred inclined angle in this embodiment is 5-20 °;
as shown in fig. 1, a third groove (spiral groove) is spirally provided on the outer circumference of the workpiece in the axial direction of the workpiece; as shown in FIG. 2, the third groove 2 has a trapezoidal cross-sectional shape (i.e., a groove shape), and the included angle between the side surface and the bottom surface of the trapezoid is θ 3 ，θ 3 Greater than or equal to 90 °;
the number of the first groove 1, the second groove 2 and the third groove 3 is not limited in this embodiment.
The specific processing method comprises the following steps:
step S1 (roughing inner bore): taking a workpiece (cylindrical blank), clamping the workpiece on a lathe, finely turning the outer circumference of the workpiece to meet the standard, and making an inner hole (drilling hole) by using the lathe, wherein the inner hole is coaxial with the workpiece;
step S2 (processing the first groove): as shown in fig. 3: a first groove 1 is lathed on the outer circumference of the workpiece by means of a grooving tool 5, the width H of the grooving tool 5 3 Is less than the bottom width L of the first groove 1 3 Round corner R of grooving cutter 5 3 Bottom fillet Q smaller than the first groove 1 3 。
And step S3: after the first groove is machined, the workpiece is unloaded from a lathe and horizontally arranged on a vertical machining center, one end of the workpiece is clamped by a claw of a numerical control dividing disc on a rotary table (namely, the claw clamps the workpiece from the inner part of an inner hole), the other end of the workpiece is jacked by an end plate on a tail frame of the vertical machining center (the end plate stretches into the inner hole and is clamped with the inner hole), and the workpiece can rotate around the axial direction of the workpiece (namely, rotates along an A axis);
the coordinate axes of the vertical machining center are defined as follows:
the vertical machining center is provided with three linear motion coordinate axes and a rotation coordinate axis (namely an A axis), the three coordinate axes are respectively a Y axis, a Z axis and an X axis, the three coordinate axes are matched with a Cartesian coordinate system, the Z axis direction is vertical, the X axis direction is a workpiece axial direction, the Y axis direction is a workpiece radial direction, and the X axis direction and the Y axis direction are horizontal directions.
Step S4 (machining the second groove), as shown in fig. 4-5: after the workpiece is installed in the vertical machining center, a second groove 2 is machined in the outer circumference of the workpiece by adopting a cutter group; the cross section of the second groove is V-shaped (V-shaped groove);
as shown in FIG. 5, the second groove is defined as follows, and the included angle between two inner side walls of the second groove is theta 1 ，θ 1 Is 30-60 degrees, and theta is preferably selected in the embodiment 1 The angle is 49 degrees, the wall surface of one inner side wall of the second groove passes through the axis of the workpiece, and the wall surface of the other inner side wall of the second groove does not pass through the axis of the workpiece;
as shown in fig. 6 to 8, the tool group includes a tool a (reference numeral 6) for rough machining of the second groove and a tool B (reference numeral 7) for finish machining, both of which are thread milling cutters; the following definitions are made for a tool A (reference numeral 6) and a tool B (reference numeral 7), and the cutting angle of the tool A (reference numeral 6) and the cutting angle of the tool B (reference numeral 7) are both defined as θ 2 Theta of tool A (reference numeral 6) 2 Preferably 55 deg., theta of tool B (reference numeral 7) 2 Is equal to theta 1 (ii) a I.e. theta of tool B (reference numeral 7) 2 Is 49 degrees;
the second groove is specifically processed as follows:
step S4.1, as shown in FIGS. 6-7, rough machining the second groove, during cutting, to be machinedTheta of the second groove 1 Angle bisector of (a) and theta of the tool A (reference numeral 6) 2 Coincide with the bisector of (a), N in fig. 7 being the theta of the second groove 1 M denotes θ of the tool a (reference number 6) 2 N and M are all parallel to the horizontal line;
the cutter A (the number is 6) is fed along the X-axis direction, meanwhile, the workpiece rotates along the A-axis, the feeding speed is matched with the rotating speed of the workpiece, the cutter A (the number is 6) moves 626mm in the X-axis direction, and the A-axis rotates 26 degrees;
step S4.2, as shown in FIG. 8, finish machining the second groove, the second groove to be machined being cut 1 Angle bisector of (2) and theta of tool B (reference numeral 7) 2 The angle bisectors of (a) are coincident,
the tool B (reference number 6) is fed in the X-axis direction, and simultaneously the workpiece rotates along the A-axis direction, and the second groove is finely machined. K in FIG. 8 indicates θ of the tool B (reference numeral 7) 2 The angle bisector of (c). N and K are both parallel to the horizontal line.
Step S5 (machining the third groove 2), as shown in fig. 9-10:
step S5.1, as shown in fig. 9, rough-machining the third groove, and rough-machining the third groove by using three cutters (standard ball cutters) whose specifications are sequentially reduced, where the specifications of the three ball cutters satisfy the following rules: diameter H of first ball cutter 21 Width L of opening of the third groove 21 Consistent, second ball cutter diameter H 22 40-50% of the residual processing amount of the third groove after the first ball cutter is processed, and the diameter H of the third ball cutter 23 Is less than the bottom surface width L of the third groove 22 。
And S5.2, as shown in FIG. 10, finish machining the third groove, and finish machining the third groove by using a cutter C (8), wherein the cross-sectional shape of the cutting part 8.1 of the cutter C (8) is matched with the groove shape of the third groove, so that the third groove can be finish machined.
And S5.3, deburring the second groove, namely deburring the second groove by using a cutter B (the label is 7), wherein the cutter B (the label is 7) is set to be 0.1-0.2mm away from the second groove along the Y-axis direction during deburring.
Step S6 (workpiece heat treatment and inner hole finish machining):
s6.1, after deburring is completed, carrying out heat treatment on the workpiece;
and S6.2, after the workpiece is subjected to heat treatment, mounting the workpiece on a lathe, and performing finish machining on the inner hole to obtain the crushing roller.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for processing a crushing roller is characterized by comprising the following steps:
step S1: processing an inner hole on the workpiece (4);
step S2: processing a first groove (1) on the outer circumference of a workpiece;
and step S3: mounting the workpiece on a machining center;
and step S4: a second groove (2) is machined on the outer circumference of the workpiece by adopting a cutter group;
step S5: processing a third groove (3) on the outer circumference of the workpiece to obtain a crushing roller;
in the step S4, the second groove is a V-shaped groove, and the included angle between two inner side walls of the V-shaped groove is theta 1 (ii) a The tool group includes a tool A (6) for rough machining and a tool B (7) for finish machining, and the cutting angle of the tool A and the cutting angle of the tool B are defined as theta 2 Theta of the second groove to be machined during cutting 1 Angle bisector of (a) and 2 the angular bisectors of (a) coincide;
the axis of the cutter B is perpendicular to the cutting angle of the cutter B; the wall surface of one inner side wall of the second groove passes through the axis of the workpiece, and the wall surface of the other inner side wall of the second groove does not pass through the axis of the workpiece.
2. The grinding roll processing method of claim 1 wherein said step S1 includes rough turning an inner bore on a workpiece; and S6, performing heat treatment on the workpiece, and then performing finish machining on the inner hole.
3. The grinding roll processing method according to claim 2, wherein in the step S2, the first groove is opened in a circumferential direction of the workpiece.
4. The grinding roll processing method of claim 1, wherein θ is 1 Equal to 30-60.
5. The crushing roller processing method according to claim 4, wherein the tool A and the tool B are thread milling cutters, and θ of the tool B is 2 Is equal to theta 1 。
6. The grinding roll processing method according to claim 4 or 5, wherein the second groove is provided with a longitudinal direction thereof inclined to the axial direction of the workpiece; the machining center is a vertical machining center provided with a rotary table, and the workpiece is horizontally arranged on the rotary table of the vertical machining center.
7. The grinding roll processing method according to claim 6, wherein in the step S5, an angle between a bottom surface and a side surface of the third groove (3) is θ 3 ，θ 3 Greater than or equal to 90 degrees; the machining of the third groove comprises rough machining: and the third groove is roughly machined by adopting three cutters with successively reduced specifications, and the specifications of the cutters meet the following rules: the first cutter specification is consistent with the opening width of the third groove, the second cutter can finish 40-50% of the groove shape residual processing amount of the third groove after the first cutter is processed, and the third cutter specification is smaller than the bottom surface width of the third groove.
8. The grinding roll machining method according to claim 7, characterized in that the machining of the third groove further comprises finish machining the third groove with a tool C (8), the cutting portion (8.1) of the tool C matching the groove shape of the third groove.
9. The grinding roll processing method according to claim 8, wherein the second groove is deburred by the tool B, and the tool B is apart from the second groove by 0.1 to 0.2m in a Y-axis direction of the vertical processing center, the Y-axis direction being perpendicular to the axial direction of the workpiece, and the Y-axis direction being parallel to a horizontal line.
10. The crushing roller processing method according to any one of claims 7 to 9, wherein the third groove (3) is spirally provided on the outer circumference of the workpiece in the axial direction of the workpiece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111305858.5A CN113894510B (en) | 2021-11-05 | 2021-11-05 | Method for processing crushing roller |
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| CN202111305858.5A CN113894510B (en) | 2021-11-05 | 2021-11-05 | Method for processing crushing roller |
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| CN113894510A CN113894510A (en) | 2022-01-07 |
| CN113894510B true CN113894510B (en) | 2023-03-10 |
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| CN108970769A (en) * | 2018-07-31 | 2018-12-11 | 马鞍山恒隆机械科技有限公司 | A kind of rotor and preparation method thereof of novel single cyclopentane gas detector |
| CN109396511A (en) * | 2018-12-05 | 2019-03-01 | 湖北三江航天红阳机电有限公司 | A kind of large size half cover thin-walled cast steel shell machining process of steep-taper |
| CN213078618U (en) * | 2020-08-14 | 2021-04-30 | 中国铁建重工集团股份有限公司 | Crushing roller |
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2021
- 2021-11-05 CN CN202111305858.5A patent/CN113894510B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537657A (en) * | 2016-03-17 | 2016-05-04 | 沈阳飞机工业（集团）有限公司 | Method for machining lug-type notch in numerical control mode |
| KR20180059013A (en) * | 2016-11-25 | 2018-06-04 | 곽현수 | Pollack piece manufacturing machine |
| CN108555552A (en) * | 2018-04-14 | 2018-09-21 | 上海小糸车灯有限公司 | Mould of car lamp parts machining process |
| CN108789856A (en) * | 2018-05-24 | 2018-11-13 | 安顺市杰勇石业有限公司 | A kind of cooling vertical stone process tool and its manufacturing method certainly |
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