CN115446553A - Method for processing locking body - Google Patents
Method for processing locking body Download PDFInfo
- Publication number
- CN115446553A CN115446553A CN202211221092.7A CN202211221092A CN115446553A CN 115446553 A CN115446553 A CN 115446553A CN 202211221092 A CN202211221092 A CN 202211221092A CN 115446553 A CN115446553 A CN 115446553A
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- Prior art keywords
- blank
- plane
- machining
- heat treatment
- locking body
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000003754 machining Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
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Classifications
-
- 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
Abstract
The invention discloses a method for processing a locking body, which has stable processing quality and high production efficiency. The processing method comprises the following steps: s1, heat treatment; s2, processing a side plane, an inner chamber, a tail frame, a revolution surface, a bottom pit step, a rough drill and a fine reaming pinhole by taking a lower plane of the blank, a side plane of the blank and a front end surface of the blank as positioning references; s3, processing an upper plane, an impact surface, a step between the upper plane and the impact surface, a web frame and a peripheral chamfer of the web frame by taking the side plane, the bottom nest and the lower plane of the blank as positioning references; s4, machining a locking shoulder, steps on two side surfaces, a rough drill, a fine hinge pin hole, a lower plane hole and a spring hole by taking the side plane, the bottom nest and the upper plane as positioning references; and S5, heat treatment.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machining method of a locking body.
Background
Referring to fig. 1, the locking body is the main part of the locking mechanism of the firearm, ensuring the correct relative position of the parts, and performing the mechanical action with the other mechanical parts during the working process of the automatic cycle. Since the locking body works under high temperature, high pressure and friction conditions, materials with high yield strength and tensile strength are generally used, which is not favorable for cutting processing.
The relation between the sizes of the locking bodies directly influences the processing quality. The problems that the machining quality of the locking body is poor, the process flow is long, the durability of a cutting tool for cutting is low, the machining efficiency is low, a large amount of cost is invested in labor and equipment and the like exist in the traditional machining for a long time.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for processing a locking body, which has stable processing quality and high production efficiency.
The purpose of the invention is realized as follows:
a processing method of a locking body is characterized in that a blank is in a cuboid shape and has a blank lower plane, a blank upper plane, a blank side plane, a blank front end face and a blank rear end face, and the processing method comprises the following steps:
s1, heat treatment;
s2, with a lower blank plane, a side blank plane and a front blank end face as positioning references, machining a side plane on the side plane of the blank by using an end mill, machining an inner chamber on the side plane, machining a tail frame on the rear end face of the blank, communicating the tail frame with the inner chamber, machining a revolution surface at the junction of the inner chamber and the tail frame, machining a bottom socket and a bottom socket step on the front blank end face, and roughly drilling and finely reaming a pinhole at the central part of the bottom socket;
s3, with the side plane, the bottom nest and the lower plane of the blank as positioning references, processing an upper plane and an impact surface, steps and a web frame between the upper plane and the impact surface on the upper plane of the blank by using an end mill, wherein the web frame is communicated with the inner chamber, and a peripheral chamfer of the web frame of the locking body is milled by using a chamfer end mill;
s4, with the side plane, the bottom nest and the upper plane as positioning references, machining a locking shoulder between the front end face and the side plane of the blank by using an end mill, machining steps on two side faces on the lower plane of the blank, roughly drilling holes, finely reaming pin holes and lower plane holes on the lower plane of the blank, and roughly drilling holes and finely reaming spring holes on the steps of the bottom nest;
and S5, heat treatment.
Preferably, the blank material is 30CrNi3A.
Preferably, in the step S1, the blank is adjusted to have a hardness of 100 to 200HB and a yield strength of 320 to 450N/mm by heat treatment 2 The tensile strength is 550-850N/mm 2 (ii) a In step S5, the workpiece is adjusted to the material mechanical properties required for the product by heat treatment. I.e. increase the yield strength and tensile strength of the material.
Preferably, in the step S1, the heat treatment process is normalizing and high-temperature tempering; in the step S5, the heat treatment process includes cleaning, drying, quenching, cleaning, drying, and tempering.
Preferably, in the steps S2-S4, the machining equipment is an X \ Y \ Z \ A four-axis machining center with 24 cutter positions and a main shaft rotating speed of 0-8000 r/min and A-axis rotation.
Due to the adoption of the technical scheme, the processing quality is stable, the production efficiency is high, and the labor and equipment investment is less.
The invention can improve the machinability of the locking body before mechanical processing, improve the durability of the cutter, carry out integrated processing on each part and improve the production efficiency. According to the invention, the parts which are preferentially machined are selected as the positioning reference and the measuring reference of other sizes according to the importance degree of each part of the locking body, so that the machining quality is improved.
Drawings
FIG. 1 is a schematic view of the various parts of the locking body involved in the present invention;
FIG. 2 is a schematic diagram of the completion of the step 2 lock of the present invention;
FIG. 3 is a schematic diagram of the process of step 2 of the present invention;
FIG. 4 is a schematic diagram of the step 3 lock completion in the present invention;
FIG. 5 is a schematic diagram of the process of step 3 of the present invention;
FIG. 6 is a schematic diagram of the completion of the step 4 lock of the present invention;
FIG. 7 is a schematic diagram of the processing and positioning in step 4 of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples. In the invention, the sizes of all parts of the locking body are mutually influenced, and the two side planes 1 are the references of the bottom nest 2, the needle hole 3, the bottom nest step 4, the inner chamber 5, the tail frame 6, the revolution surface 7, the locking shoulder 8, the pin hole 9, the lower plane hole 10, the web frame 13, the two side surface steps 14 and the spring hole 15. The bottom socket 2 of the locking body is the reference of the pinhole 3, the bottom socket step 4, the inner chamber 5, the locking shoulder 8, the pinhole 9, the lower plane hole 10, the web frame 13 and the spring hole 15. The upper plane 11 of the locking body is the reference of the lower plane hole 10, the striking surface 12, the web 13, and the steps 14 on the two sides. Firstly, a side plane 1 and a bottom nest 2, a pinhole 3, a bottom nest step 4, an inner chamber 5, a tail frame 6 and a revolution surface 7 are simultaneously processed by one-time clamping. And then the side plane 1 and the bottom nest 2 are used as processing and positioning references, and the upper plane 11 is clamped once and processed as a lower plane hole 10, an impact surface 12 and a web frame 13. And then, the side plane 1, the bottom nest 2 and the upper plane 11 are used as processing and positioning references, and the locking shoulder 8, the pin hole 9, the lower plane hole 10, the steps 14 on two side surfaces and the spring hole 15 are processed by one-time clamping.
Example 1
Step 1: the blank material 30CrNi3A is adjusted to the hardness of 100-200 HB and the yield strength of 320-450N/mm by a heat treatment method before mechanical processing 2 The tensile strength is 550-850N/mm 2 The blank has good cutting processability and high durability of a cutting tool. The heat treatment process comprises normalizing and high-temperature tempering.
Step 2: the machining equipment is a 24-cutter-position X \ Y \ Z \ A four-axis machining center with the rotation of an A axis at the main shaft rotating speed of 0-8000 r/min, and the specific machining contents are as follows: the blank is a regular rectangle 74mm × 48mm × 46mm, has flat six surfaces and is mutually vertical. And respectively machining the side plane 1, the bottom nest 2, the bottom nest step 4, the inner chamber 5, the tail frame 6 and the revolution surface 7 by using an end mill by taking the blank lower plane 16, the blank side plane 17 and the blank front end surface 18 as positioning references. A straight shank special twist drill is used for roughly drilling a pinhole 3, and a straight shank special reamer is used for finely reaming a pinhole 3.
Step 3: the machining equipment is a 24-cutter position X \ Y \ Z \ A four-axis machining center with a rotating A axis at the rotating speed of 0-8000 r/min, and the specific machining contents are as follows: and respectively processing an upper plane 11, an impact surface 12 and a web frame 13 by using an end mill with the side plane 1, the bottom socket 2 and the blank lower plane 16 as positioning references, and milling a peripheral chamfer of the web frame of the locking body by using a chamfer end mill.
Step 4: the machining equipment is a 24-cutter-position X \ Y \ Z \ A four-axis machining center with the rotation of an A axis at the main shaft rotating speed of 0-8000 r/min, and the specific machining contents are as follows: and (3) milling the locking shoulder 8 and the steps 14 on the two side surfaces by using an end mill by taking the side plane 1, the bottom socket 2 and the upper plane 11 as positioning references. And drilling and reaming a pin hole 9, a lower plane hole 10 and a spring hole 15 by using a special drill bit and a reamer.
And 5, after the mechanical processing is finished, adjusting the semi-finished product of the locking body into the mechanical property of the material required by the product by a heat treatment means. The heat treatment process comprises the steps of cleaning and drying in step 1, quenching in step 2, cleaning and drying in step 3 and tempering in step 4.
Example 2
In the step 3, the processing equipment can also be a 24-cutter position, the rotating speed of the main shaft is 0-8000 r/min, and an X \ Y \ Z triaxial processing center.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. A processing method of a locking body is characterized in that a blank is in a cuboid shape and has a blank lower plane, a blank upper plane, a blank side plane, a blank front end face and a blank rear end face, and the processing method comprises the following steps:
s1, heat treatment;
s2, with a lower blank plane, a side blank plane and a front blank end face as positioning references, machining a side plane on the side plane of the blank by using an end mill, machining an inner chamber on the side plane, machining a tail frame on the rear end face of the blank, communicating the tail frame with the inner chamber, machining a revolution surface at the junction of the inner chamber and the tail frame, machining a bottom socket and a bottom socket step on the front blank end face, and roughly drilling and finely reaming a pinhole at the central part of the bottom socket;
s3, with the side plane, the bottom nest and the lower plane of the blank as positioning references, processing an upper plane and an impact surface, steps and a web frame between the upper plane and the impact surface on the upper plane of the blank by using an end mill, wherein the web frame is communicated with the inner chamber, and a peripheral chamfer of the web frame of the locking body is milled by using a chamfer end mill;
s4, with the side plane, the bottom nest and the upper plane as positioning references, machining a locking shoulder between the front end face and the side plane of the blank by using an end mill, machining steps on two side faces on the lower plane of the blank, roughly drilling holes, finely reaming pin holes and lower plane holes on the lower plane of the blank, and roughly drilling holes and finely reaming spring holes on the steps of the bottom nest;
and S5, heat treatment.
2. The method for manufacturing a locking body according to claim 1, wherein: the blank material is 30CrNi3A.
3. The method for manufacturing a locking body according to claim 2, wherein: in the step S1, the blank is adjusted to have the hardness of 100 to 200HB and the yield strength of 320 to 450N/mm through heat treatment 2 Tensile strength of 550-850N/mm 2 (ii) a In step S5, the workpiece is adjusted to the mechanical properties of the material required by the product through heat treatment.
4. A method of manufacturing a closure according to claim 3, wherein: in the step S1, the heat treatment process comprises normalizing and high-temperature tempering; in the step S5, the heat treatment process includes cleaning, drying, quenching, cleaning, drying, and tempering.
5. The method for manufacturing a locking body according to claim 1, wherein: in the steps S2-S4, the machining equipment is a 24-cutter position X \ Y \ Z \ A four-axis machining center with the rotation of an A axis at the main shaft rotating speed of 0-8000 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221092.7A CN115446553A (en) | 2022-10-08 | 2022-10-08 | Method for processing locking body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221092.7A CN115446553A (en) | 2022-10-08 | 2022-10-08 | Method for processing locking body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115446553A true CN115446553A (en) | 2022-12-09 |
Family
ID=84308634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211221092.7A Pending CN115446553A (en) | 2022-10-08 | 2022-10-08 | Method for processing locking body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115446553A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839978A (en) * | 1987-03-23 | 1989-06-20 | Matra Manurhin Defense | Support device for the mechanism of a revolver |
| CN205690971U (en) * | 2016-06-23 | 2016-11-16 | 重庆建设工业(集团)有限责任公司 | A kind of novel sniper rifle Gunlock structure |
-
2022
- 2022-10-08 CN CN202211221092.7A patent/CN115446553A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839978A (en) * | 1987-03-23 | 1989-06-20 | Matra Manurhin Defense | Support device for the mechanism of a revolver |
| CN205690971U (en) * | 2016-06-23 | 2016-11-16 | 重庆建设工业(集团)有限责任公司 | A kind of novel sniper rifle Gunlock structure |
Non-Patent Citations (1)
| Title |
|---|
| 唐庆源，董存学: "《自动武器制造工艺学》", 31 May 1990, 兵器工业出版社, pages: 287 - 288 * |
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