CN107052832B - Tool apron tensioning mechanism for vertical lathe - Google Patents
Tool apron tensioning mechanism for vertical lathe Download PDFInfo
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- CN107052832B CN107052832B CN201710234624.3A CN201710234624A CN107052832B CN 107052832 B CN107052832 B CN 107052832B CN 201710234624 A CN201710234624 A CN 201710234624A CN 107052832 B CN107052832 B CN 107052832B
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- tool apron
- pull
- blind rivet
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- taper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a tool apron tensioning mechanism for a vertical lathe, which comprises a pull claw, a pull nail and a tool apron, wherein a first flange part is integrally arranged at the upper end of the pull nail, an inward convex ring is integrally arranged at the bottom end of the pull claw, the bottom surface of the first flange part faces the top surface of the convex ring, the tool apron comprises a first conical part, a second flange part and a mounting part which are integrally arranged up and down, a taper hole with a small upper part and a large lower part, which are matched with the first conical part, is formed in the taper hole in a clearance fit manner, the lower part of the pull nail is fixed on the first conical part, the top surface of the second flange part is attached to the bottom surface of the sleeve, and a lathe cutter bar is arranged on the mounting part. The blind rivet of the tensioning mechanism can bear enough broach force, so that the tool apron can obtain enough joint surface pressure, the large cutting amount cutting of the vertical lathe can be realized, and the maximum vertical broach force which can be borne by the blind rivet can reach about 10 tons and is far higher than the maximum 2.5 tons of broach force which can be borne by the conventional standard P50T-2-MAS403 blind rivet.
Description
Technical Field
The invention relates to a tool apron tensioning mechanism, in particular to a tool apron tensioning mechanism for a vertical lathe.
Background
In a numerical control vertical turning center, the connection form of the tool apron and the ram and the tension of the tool apron on the ram play a decisive role in the process rigidity of the tool system.
There are two structural forms of broach mechanism in the market at present. The first is realized by a standard taper shank matched with a standard blind rivet tensioning tool apron, for example, a standard BT50 taper shank matched with a standard P50T-2-MAS403 blind rivet tensioning tool apron, the structure of which is shown in figure 1, wherein in figure 1, 1 is a 30-degree blind rivet, 2 is a BT50 taper shank, 3 is a positioning key (left and right one respectively), 4 is a tool apron, 5 is a pull rod, 6 is a pull claw and 7 is a ram. The second is to process a large T-shaped groove on the turning tool bar, the large T-shaped blind rivet is used for tensioning the structure, two V-shaped positioning blocks are fixed at the bottom of the transition disc, two V-shaped positioning rabbets are formed in the upper end of the turning tool apron, the transition disc is in contact with the V-shaped surface part of the turning tool apron, the structure is schematically shown in fig. 2, 1 is a pull rod, 2 is a T-shaped blind rivet, 3 is a V-shaped positioning rabbet, 4 is a turning tool apron, 5 is a turning tool bar, 6 is a transition disc, and 7 is a ram.
The structural form of the two broach mechanisms is that the first tensioning force can only be provided according to the conventional blind rivet standard, the contact surface is only the taper shank part of BT50, on one hand, the broach force is small, on the other hand, the contact surface is single, the cutting force which can be born in the processing is not large enough, and the processing requirement of large cutting quantity can not be met. The second type of blind rivet is a larger T-shaped blind rivet, the contact surface is of a double-V-shaped groove structure, and although larger broaching force can be realized, the manufacturing difficulty of the cutter is larger, standardization cannot be realized, the telescopic travel of the cutter bar of the lathe is large during automatic cutter changing, the cutter changing time is long, the maintenance is inconvenient, and the interchangeability is poor.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of the prior art, a tool apron tensioning mechanism for a vertical lathe is provided, and the maximum vertical broach force bearable by the tool apron tensioning mechanism can reach about 10 tons and is far higher than the maximum broach force 2.5 tons bearable by the traditional standard P50T-2-MAS403 blind rivet.
The technical scheme adopted for solving the technical problems is as follows: a blade holder tensioning mechanism for vertical lathe, includes pull claw, blind rivet and blade holder, the upper portion of pull claw link to each other with the pull rod, the upper end of blind rivet follow the bottom of pull claw stretch into in the pull claw, pull rod with the outside of pull claw install the sleeve, telescopic outside install the ram, the blade holder install telescopic bottom, the upper end of blind rivet an organic whole be provided with first flange portion, the bottom of pull claw an organic whole be provided with interior protruding bulge loop, the bottom surface of first flange portion with the top surface of bulge loop be the plane, the bottom surface of first flange portion just to the top surface of bulge loop, the blade holder include first toper portion, second flange portion and the installation department of upper and lower integrative setting, telescopic bottom offer with the big end down taper hole of first toper portion looks adaptation, first toper portion clearance fit install in taper hole's the bottom surface of first flange portion with the top surface of second flange portion of flange portion the top surface of flange portion the second flange portion of flange portion the top surface of flange portion the second of flange portion the top surface of flange portion the top of flange portion the flange portion.
According to the tool apron tensioning mechanism disclosed by the invention, the first conical part on the tool apron is arranged in the conical hole in a clearance fit manner, and the tool apron has a self-locking function after being tensioned, so that the reliability of the tool apron in the use process is improved; the top surface of the second flange part on the tool apron is tightly contacted with the bottom surface of the sleeve, and the outer diameter of the second flange part is the same as the outer diameter of the bottom of the sleeve. The first conical part and the second flange part on the tool apron are simultaneously contacted with the sleeve, the contact area is large, the contact rigidity of the tool apron can be improved to the greatest extent, and the tool apron is ensured to realize large-area contact so as to obtain the maximum bending rigidity. The double-sided contact type tool apron has high repeated positioning precision, and the repeated positioning precision is 0.005mm. In addition, because the blind rivet of the tool apron tensioning mechanism is a zero-degree blind rivet which only bears vertical tension, the bottom surface of the first flange part on the blind rivet is contacted with the top surface of the convex ring on the pull claw during the broaching, so that the blind rivet can bear enough broaching force, the tool apron is ensured to obtain enough joint surface pressure, and the large cutting amount cutting of the vertical lathe is realized.
Compared with the traditional standard P50T-2-MAS403 blind rivet and the matched cutter claw, the maximum vertical cutter pulling force which can be born by the cutter seat tensioning mechanism of the invention with different specifications can reach about 10 tons and is far higher than the maximum 2.5 tons of cutter pulling force which can be born by the traditional standard P50T-2-MAS403 blind rivet.
Preferably, the taper of the first taper portion is 1:4. The first conical part adopts a large conical surface with the conical degree of 1:4 and a short conical design, so that the standardized customization of parts can be realized, and the manufacturing and the maintenance are convenient.
Preferably, the lower part of the blind rivet is in threaded connection with the first conical part. The threaded connection mode of the blind rivet and the tool apron is convenient for the assembly of the blind rivet and the tool apron, and can further ensure that the blind rivet only bears vertical tension.
Preferably, a gap is formed between the top surface of the first conical part and the top surface of the conical hole, a second conical part is integrally arranged in the middle of the upper end of the first conical part, a third flange part is integrally arranged in the middle of the blind rivet, the outer diameter of the second conical part is larger than that of the third flange part, the bottom surface of the third flange part is attached to the top surface of the second conical part, and the blind rivet penetrates through the second conical part and is in threaded connection with the first conical part. The clearance between the top surface of the first conical part and the top surface of the conical hole and the arrangement of the second conical part can effectively avoid interference of the tool apron on the sleeve. In addition, the second conical part is arranged, so that the mounting height of the blind rivet is convenient to adjust and guaranteed, meanwhile, the contact area between the tool apron and the blind rivet is reduced, and the blind rivet is guaranteed to bear vertical pulling force only. Because the external diameter of second toper portion is greater than the external diameter of third flange portion, the bottom surface of third flange portion is laminated mutually with the top surface of second toper portion, can realize the terminal surface location and the spacing to the blind rivet, when convenient assembly, can guarantee the blade holder rigidity.
Compared with the prior art, the invention has the advantages that: the tool apron tensioning mechanism for the vertical lathe has the advantages that the contact area of the tool apron and the sleeve is large, the contact rigidity of the tool apron can be improved to the greatest extent, the tool apron is ensured to realize large-area contact to obtain the maximum bending rigidity, and meanwhile, the repeated positioning precision of the double-sided contact type tool apron is high, and the repeated positioning precision is 0.005mm; the blind rivet only bears vertical tension, can bear enough broaching force, ensures that the tool apron obtains enough joint surface pressure, and realizes the large cutting amount cutting of the vertical lathe. The maximum vertical broach force which can be borne by the tool apron tensioning mechanism of the invention with different specifications can reach about 10 tons and is far higher than the maximum 2.5 tons of broach force which can be borne by the traditional standard P50T-2-MAS403 blind rivet.
Drawings
FIG. 1 is a schematic diagram of a conventional standard P50T-2-MAS403 blind rivet post-installation construction;
FIG. 2 is a schematic diagram of a conventional T-tag pull nail after installation;
FIG. 3 is a schematic diagram of a tool holder tightening mechanism according to an embodiment;
fig. 4 is a schematic structural diagram of a tool apron tightening mechanism according to a second embodiment.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The tool apron tensioning mechanism for a vertical lathe of embodiment 1 is shown in the figure, and comprises a pull claw 1, a pull nail 2 and a tool apron, wherein the upper part of the pull claw 1 is connected with a pull rod 4, the upper end of the pull nail 2 stretches into the pull claw 1 from the bottom of the pull claw 1, a sleeve 5 is arranged on the outer sides of the pull rod 4 and the pull claw 1, a ram 6 is arranged on the outer side of the sleeve 5, the tool apron is arranged at the bottom end of the sleeve 5, a first flange part 21 is integrally arranged at the upper end of the pull nail 2, an inward convex ring 11 is integrally arranged at the bottom end of the pull claw 1, the bottom surface of the first flange part 21 and the top surface of the convex ring 11 are both planes, the bottom surface of the first flange part 21 is opposite to the top surface of the convex ring 11, the tool apron comprises a first conical part 31, a second flange part 32 and a mounting part 33 which are integrally arranged up and down, a conical hole 51 which is matched with the first conical part 31 and is small in top and large in bottom is formed in the bottom of the sleeve 5, the first conical part 31 is installed in the conical hole 51 in a clearance fit mode, a gap 52 is formed between the top surface of the first conical part 31 and the top surface of the conical hole 51, the lower part of the blind rivet 2 is in threaded connection with the first conical part 31, the outer diameter of the second flange part 32 is identical to the outer diameter of the bottom of the sleeve 5, the top surface of the second flange part 32 is a plane, the top surface of the second flange part 32 is attached to the bottom surface of the sleeve 5, and the tool bar 7 is installed on the mounting part 33.
In embodiment 1, a second tapered portion 34 is integrally provided in the middle of the upper end of the first tapered portion 31, a third flange portion 22 is integrally provided in the middle of the blind rivet 2, the outer diameter of the second tapered portion 34 is larger than that of the third flange portion 22, the bottom surface of the third flange portion 22 is attached to the top surface of the second tapered portion 34, and the blind rivet 2 passes through the second tapered portion 34 to be in threaded connection with the first tapered portion 31.
The tool apron tensioning mechanism for a vertical lathe in embodiment 2 is basically the same as that in embodiment 1, as shown in the figure, except that in embodiment 2, the taper of the first taper portion 31 is 1:4, and the design of the large taper and the short taper meets the current international taper requirement, so that the standardized customization of parts can be realized, and the manufacturing and the maintenance are convenient.
When the tool holder tensioning mechanism pulls the tool, the bottom surface of the first flange part 21 on the tool holder tensioning mechanism contacts with the top surface of the convex ring 11 on the pull claw 1, the first conical part 31 on the tool holder is arranged in the conical hole 51 at the bottom of the sleeve 5 and is in close contact with the sleeve 5, the top surface of the second flange part 32 on the tool holder is in close contact with the bottom surface of the sleeve 5, the tool holder tensioning mechanism can bear enough large broaching force and only vertical pulling force, enough joint surface pressure of the tool holder can be ensured, and the bending rigidity of the tool holder is high, the repeated positioning accuracy is high, so that the large cutting amount cutting of the vertical lathe can be realized.
The maximum vertical broach force which can be borne by the tool apron tensioning mechanisms with different specifications can reach about 10 tons and is far higher than the maximum 2.5 tons of broach force which can be borne by the traditional standard P50T-2-MAS403 blind rivet.
Claims (2)
1. The tool apron tensioning mechanism for the vertical lathe comprises a pull claw, a pull nail and a tool apron, wherein the upper part of the pull claw is connected with a pull rod, the upper end of the pull nail stretches into the pull claw from the bottom of the pull claw, a sleeve is arranged on the outer sides of the pull rod and the pull claw, a ram is arranged on the outer side of the sleeve, the tool apron is arranged at the bottom end of the sleeve, the tool apron is characterized in that a first flange part is integrally arranged at the upper end of the pull nail, an inward convex ring is integrally arranged at the bottom end of the pull claw, the bottom surface of the first flange part and the top surface of the convex ring are plane, the bottom surface of the first flange part is opposite to the top surface of the convex ring, the tool apron comprises a first conical part, a second flange part and a mounting part which are integrally arranged up and down, a taper hole which is small at the bottom of the sleeve and is matched with the first conical part is formed, the first taper part is installed in the taper hole in a clearance fit way, the lower part of the blind rivet is fixed on the first taper part, the outer diameter of the second flange part is the same as the outer diameter of the bottom of the sleeve, the top surface of the second flange part is a plane, the top surface of the second flange part is attached to the bottom surface of the sleeve, the installation part is provided with a lathe cutter bar, the lower part of the blind rivet is in threaded connection with the first taper part, a clearance is reserved between the top surface of the first taper part and the top surface of the taper hole, the middle part of the upper end of the first taper part is integrally provided with the second taper part, the middle part of the blind rivet is integrally provided with the third flange part, the outer diameter of the second taper part is larger than the outer diameter of the third flange part, the bottom surface of the third flange part is attached to the top surface of the second conical part, and the blind rivet penetrates through the second conical part to be in threaded connection with the first conical part.
2. The tool apron tightening mechanism for a vertical lathe according to claim 1, wherein the taper of the first tapered portion is 1:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710234624.3A CN107052832B (en) | 2017-04-12 | 2017-04-12 | Tool apron tensioning mechanism for vertical lathe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710234624.3A CN107052832B (en) | 2017-04-12 | 2017-04-12 | Tool apron tensioning mechanism for vertical lathe |
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| Publication Number | Publication Date |
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| CN107052832A CN107052832A (en) | 2017-08-18 |
| CN107052832B true CN107052832B (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710234624.3A Active CN107052832B (en) | 2017-04-12 | 2017-04-12 | Tool apron tensioning mechanism for vertical lathe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664133A (en) * | 2018-12-27 | 2019-04-23 | 齐齐哈尔二机床(集团)有限责任公司 | A kind of vertical milling-lathe machining center attachment clamp system |
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| CN100344407C (en) * | 2000-04-10 | 2007-10-24 | 帕斯卡工程株式会社 | Tool holder |
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| CN101474682B (en) * | 2009-01-21 | 2010-11-03 | 齐齐哈尔二机床(集团)有限责任公司 | Tool-pulling structure for horizontal lathe tiger head tool holder |
| CN201913490U (en) * | 2010-12-21 | 2011-08-03 | 山东大学 | End toothed disc type high-speed solid shank |
| CN202367507U (en) * | 2011-12-29 | 2012-08-08 | 重庆机床(集团)有限责任公司 | High-rigidity connecting structure of spindle and knife handle |
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| CN204123169U (en) * | 2014-06-26 | 2015-01-28 | 宁波海天精工股份有限公司 | A kind of handle of a knife switching device of lathe BT60 main shaft |
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| CN205798475U (en) * | 2016-06-12 | 2016-12-14 | 福建成功机床有限公司 | A kind of vertical lathe tool rest broaching tool structure |
| CN206632686U (en) * | 2017-04-12 | 2017-11-14 | 宁波海天精工股份有限公司 | A kind of tool rest tensioning mechanism for vertical lathe |
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- 2017-04-12 CN CN201710234624.3A patent/CN107052832B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012147143A (en) * | 2011-01-11 | 2012-08-02 | Ricoh Co Ltd | Line illumination optical system and image reader |
| CN104148974A (en) * | 2014-06-26 | 2014-11-19 | 宁波海天精工股份有限公司 | Shank switching device for BT60 spindle on lathe |
| CN204893534U (en) * | 2015-08-11 | 2015-12-23 | 宁波海天精工股份有限公司 | Teper -shank mechanism that forges a knife |
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| CN107052832A (en) | 2017-08-18 |
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