CN107398725B - Assembly machine for ball screw pair - Google Patents
Assembly machine for ball screw pair Download PDFInfo
- Publication number
- CN107398725B CN107398725B CN201710630352.9A CN201710630352A CN107398725B CN 107398725 B CN107398725 B CN 107398725B CN 201710630352 A CN201710630352 A CN 201710630352A CN 107398725 B CN107398725 B CN 107398725B
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- China
- Prior art keywords
- conveying
- screw
- base
- arc groove
- placing table
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
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
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides an assembly machine for a ball screw pair, which can conveniently and quickly assemble the ball screw pair, can avoid the problem that steel balls fall off in the assembly process, and has low labor intensity and high working efficiency; the guide rail type screw feeder comprises a base, a sliding rail is arranged on the base, a guide mechanism is arranged on the base between the sliding rails, a pressing mechanism and a placing mechanism for placing a screw rod and a screw nut are arranged on the sliding rails at two ends of the guide mechanism, the guide mechanism is driven by a driving mechanism, and a conveying pipe communicated with the guide mechanism is arranged above the guide mechanism.
Description
Technical Field
The invention relates to the technical field of ball screw pairs, in particular to an assembly machine for a ball screw pair.
Background
The ball screw pair is a transmission element most commonly used on tool machinery and precision machinery, has the main functions of converting rotary motion into linear motion or converting torque into axial repeated acting force, has the characteristics of high precision, reversibility and high efficiency, is widely applied to various industrial equipment and precision instruments due to small friction resistance, is a very critical component for a high-precision machine tool, and can effectively improve the positioning precision of the machine tool.
For assembly in the ball screw pair, grease is coated in the spiral groove in the screw, then the steel ball is stuck in the groove until the steel ball is fully circulated, and finally one end of the screw with the steel ball is screwed along the direction of the spiral groove of the screw rod until the screw is completely screwed with the screw rod.
Disclosure of Invention
The invention provides the assembly machine for the ball screw pair, which can conveniently and rapidly assemble the ball screw pair, can avoid the problem that the steel ball falls off in the assembly process, and has low labor intensity and high working efficiency.
The technical scheme is characterized by comprising a base, wherein a sliding rail is arranged on the base, a guide-in mechanism is arranged on the base between the sliding rails, a pressing mechanism and a placing mechanism for placing a screw rod and a screw nut are arranged on the sliding rails at two ends of the guide-in mechanism, the guide-in mechanism is driven by a driving mechanism, and a conveying pipe communicated with the guide-in mechanism is arranged above the guide-in mechanism.
It is further characterized by:
the jacking mechanism comprises a first support connected to the sliding rail, a guide seat is arranged on the first support, a rotating shaft is arranged on the upper portion of the guide seat in a penetrating mode and driven by a screwing motor, and the rotating shaft is of a hollow structure;
the placing mechanism comprises a second support connected to the sliding rail, a clamping seat is arranged on the second support, a placing table is fixed at the upper end part of one side of the clamping seat far away from the introducing mechanism, a U-shaped arc groove communicated with the placing table is formed in the top end part of the placing table and the clamping seat, a screw rod pressurizing cylinder is connected to the outer end part of the placing table, a piston rod of the screw rod pressurizing cylinder is connected with a center, and the center is arranged in the U-shaped arc groove of the placing table;
the groove width of the U-shaped arc groove on the placing table is smaller than that of the U-shaped arc groove on the clamping seat, and the two side end parts of the placing table and the clamping seat at the U-shaped arc groove are of tooth-shaped structures;
a screw is clamped in the U-shaped arc groove of the clamping seat, the screw rod is placed in the U-shaped arc groove of the placing table, and the end part of the screw rod is tightly propped up through the center;
the driving mechanism comprises guide cylinders respectively arranged at two ends of the base along the running direction, a piston rod of one side of the guide cylinder is connected with the guide seat, and a piston rod of the other side of the guide cylinder is connected with the second support;
the guide-in mechanism comprises a base fixed on the base, a positioning plate is fixed at the upper end of the base, a conveying block is fixed at the end part of the positioning plate, which is positioned at one side of the screw nut, a through hole which is positioned at the same central line of the rotating shaft is formed in the positioning plate and the conveying block, the through hole and the U-shaped arc groove are positioned at the same horizontal height, a conveying hole is formed in the conveying block from the top to the bottom vertically, an annular step-shaped bulge is formed at the end part of the conveying block, which is positioned at the through hole, a bump is arranged on the outer circular end surface of the bulge, a round hole is formed in the bump, a pore canal of the conveying hole extends to be communicated with the round hole, and the conveying pipe is communicated with the conveying hole;
the outer diameter of the rotating shaft is smaller than the diameter of the through hole and is not larger than the diameter of the screw rod, and the diameter of the through hole is smaller than the outer diameter of the screw nut;
steel balls and springs are alternately conveyed to the conveying holes at intervals through the conveying pipes, the diameters of the steel balls and the diameters of the springs are the same, and the diameters of the conveying holes and the circular holes are larger than the diameters of the steel balls and the diameters of the springs.
The ball screw assembly device has the beneficial effects that the guide-in mechanism, the pressing mechanism and the placing mechanism for placing the screw rod and the screw nut are arranged and are driven by the driving mechanism, the conveying pipe communicated with the guide-in mechanism is arranged above the guide-in mechanism, the conveying pipe conveys balls to the guide-in mechanism, and the pressing mechanism and the guide-in mechanism cooperate to realize the assembly of the ball screw assembly, so that the problem that the steel ball falls in the existing assembly process is avoided, the convenience and the rapidness are realized, the labor intensity is low, and the working efficiency is high.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a front view of a transport block;
FIG. 4 is a cross-sectional view of FIG. 3;
fig. 5 is a top view of fig. 3.
Detailed Description
As shown in fig. 1-5, the invention comprises a base 1, wherein a slide rail 2 is arranged on the base 1, an introduction mechanism is arranged on the base 1 between the slide rails 2, a pressing mechanism and a placing mechanism for placing a screw rod 3 and a screw 4 are arranged on the slide rails 2 positioned at two ends of the introduction mechanism, and are driven by a driving mechanism, and a conveying pipe 5 communicated with the introduction mechanism is arranged above the introduction mechanism.
The jacking mechanism comprises a first support 6 connected to the slide rail 2, a guide seat 7 is arranged on the first support 6, a rotating shaft 8 is arranged on the upper portion of the guide seat 7 in a penetrating mode and is driven by a screwing motor 9, and the rotating shaft 8 is of a hollow structure; the placing mechanism comprises a second support 10 connected to the slide rail 2, a clamping seat 11 is arranged on the second support 10, a placing table 12 is fixed at the upper end part of one side of the clamping seat 11 far away from the guiding mechanism, a U-shaped arc groove 13 communicated with the placing table 12 and the clamping seat 11 is formed in the top end part of the placing table 12, a screw rod pressurizing cylinder 14 is connected to the outer end part of the placing table 12, a piston rod of the screw rod pressurizing cylinder 14 is connected with a center 15, and the center 15 is arranged in the U-shaped arc groove 13 of the placing table 12; the groove width of the U-shaped arc groove 13 on the placing table 12 is smaller than the groove width of the U-shaped arc groove 13 on the clamping seat 11, and the placing table 12 at the U-shaped arc groove 13 and the two side end parts of the clamping seat 11 are of tooth-shaped structures; the screw 4 is clamped in the U-shaped arc groove 13 of the clamping seat 11, the screw rod 3 is placed in the U-shaped arc groove 13 of the placing table 12, the end part of the screw rod 3 is tightly propped up through the center 15, the screw rod 3 can be prevented from swinging in the moving process, an effective positioning effect is achieved, the driving mechanism comprises guide cylinders 16 and 17 which are respectively arranged at two end parts of the base 1 along the running direction, a piston rod of the guide gas 16 at one side is connected with the guide seat 7, and a piston rod of the guide cylinder 17 at the other side is connected with the second support 10; the guiding mechanism comprises a base 18 fixed on the base 1, a positioning plate 19 is fixed at the upper end of the base 18, a conveying block 20 is fixed at the end part of the positioning plate 19 positioned at one side of the screw 4, through holes 21 which are positioned at the same central line with the rotating shaft 8 are formed in the positioning plate 19 and the conveying block 20, the through holes 21 and the U-shaped arc grooves 13 are positioned at the same horizontal height, conveying holes 22 are formed in the conveying block 20 from the top vertically downwards, annular step-shaped protrusions 23 are formed in the end part of the conveying block 20 positioned at the through holes 21, bumps 24 are formed in the outer circular end surfaces of the protrusions 23, round holes 25 are formed in the bumps 24, the pore channels of the conveying holes 22 extend to be communicated with the round holes 25, and conveying pipes 5 are communicated with the conveying holes 22; the outer diameter of the rotating shaft 8 is smaller than the diameter of the through hole 21 and is not larger than the diameter of the screw rod 3, and the diameter of the through hole 21 is smaller than the outer diameter of the screw 4; steel balls and springs are alternately conveyed to the conveying holes 22 at intervals through the conveying pipes 5, the steel balls and springs alternately arranged are jacked into the threaded grooves of the nuts 4 through the rotating shafts 8, the tensioning force can be effectively improved, the steel balls are prevented from falling, the diameters of the steel balls and the springs are the same, and the diameters of the conveying holes 22 and the circular holes 25 are larger than those of the steel balls and the springs.
According to the invention, the screw 4 is clamped in the U-shaped arc groove 13 of the clamping seat 11, the screw rod 3 is placed in the U-shaped arc groove 13 of the placing table 12, the placing mechanism and the pushing mechanism move along the guide rail 2 through the driving mechanism, the screw 4 is sleeved and tightly pressed on the outer circumferential end surface of the boss 23, the rotating shaft 8 passes through the positioning plate 19, the through hole 21 on the conveying block 20 and the screw 4, and tightly pressed on one end of the screw rod 3, steel balls and springs are alternately conveyed to the conveying hole 22 through the conveying pipe 5, the rotating shaft 8 is driven by the screwing motor 9, the steel balls and springs are conveyed between the outer wall of the rotating shaft 8 and the inner wall of the screw 4 along the pore canal of the conveying hole 22, then are pushed into the thread groove of the screw 4 through the rotating shaft 8, after all pushing into the thread groove, the other end of the screw rod 3 is pushed tightly by the tip 15 and pushed by the piston rod of the screw pressurizing cylinder 14, and meanwhile, the rotating shaft 8 drives the screw rod 3 to rotate reversely to be screwed into the screw 4, so that the assembly of the ball pair is completed, the problem of falling down in the existing assembly process is avoided, convenience and high working efficiency is achieved.
Claims (7)
1. The assembly machine for the ball screw pair is characterized by comprising a base, wherein a sliding rail is arranged on the base, an introduction mechanism is arranged on the base between the sliding rails, a pressing mechanism and a placing mechanism for placing a screw rod and a screw nut are arranged on the sliding rails positioned at two ends of the introduction mechanism, the pressing mechanism and the placing mechanism are driven by a driving mechanism, and a conveying pipe communicated with the introduction mechanism is arranged above the introduction mechanism;
the jacking mechanism comprises a first support connected to the sliding rail, a guide seat is arranged on the first support, a rotating shaft is arranged on the upper portion of the guide seat in a penetrating mode and driven by a screwing motor, and the rotating shaft is of a hollow structure;
the placing mechanism comprises a second support connected to the sliding rail, a clamping seat is arranged on the second support, a placing table is fixed at the upper end part of one side of the clamping seat, which is far away from the guiding mechanism, a U-shaped arc groove which is communicated with the placing table is formed in the top end part of the placing table, a screw rod pressurizing cylinder is connected to the outer end part of the placing table, a piston rod of the screw rod pressurizing cylinder is connected with a center, and the center is arranged in the U-shaped arc groove of the placing table.
2. The assembly machine for the ball screw assembly according to claim 1, wherein the groove width of the U-shaped arc groove on the placing table is smaller than that of the U-shaped arc groove on the clamping seat, and the two side ends of the placing table and the clamping seat at the U-shaped arc groove are of tooth-shaped structures.
3. The assembly machine for the ball screw assembly according to claim 1, wherein a screw is clamped in the U-shaped arc groove of the clamping seat, the screw is placed in the U-shaped arc groove of the placing table, and the end of the screw is tightly propped up through the center.
4. The assembling machine for the ball screw assembly according to claim 1, wherein the driving mechanism includes guide cylinders respectively provided at both end portions of the base in the running direction, a piston rod of the guide cylinder on one side is connected to the guide holder, and a piston rod of the guide cylinder on the other side is connected to the second holder.
5. The assembly machine for the ball screw assembly according to claim 1, wherein the guiding mechanism comprises a base fixed on the base, a positioning plate is fixed at the upper end of the base, a conveying block is fixed at the end of the positioning plate, which is positioned on one side of the screw nut, a through hole which is positioned on the same central line as the rotating shaft is formed in the positioning plate and the conveying block, the through hole and the U-shaped arc groove are positioned at the same horizontal level, a conveying hole is formed in the conveying block from the top vertically downwards, an annular step-shaped bulge is formed in the end of the conveying block, a bump is arranged on the outer circular end face of the bulge, a round hole is formed in the bump, a pore canal of the conveying hole extends to be communicated with the round hole, and the conveying pipe is communicated with the conveying hole.
6. The assembly machine for a ball screw assembly according to claim 5, wherein an outer diameter of the rotation shaft is smaller than a diameter of the through hole, which is smaller than an outer diameter of the nut, and is not larger than a diameter of the screw.
7. The assembly machine for the ball screw assembly according to claim 5, wherein steel balls and springs are alternately conveyed to the conveying holes through conveying pipes at intervals, the diameters of the steel balls and the springs are the same, and the diameters of the conveying holes and the round holes are larger than those of the steel balls and the springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630352.9A CN107398725B (en) | 2017-07-28 | 2017-07-28 | Assembly machine for ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630352.9A CN107398725B (en) | 2017-07-28 | 2017-07-28 | Assembly machine for ball screw pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107398725A CN107398725A (en) | 2017-11-28 |
| CN107398725B true CN107398725B (en) | 2024-03-15 |
Family
ID=60401104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710630352.9A Active CN107398725B (en) | 2017-07-28 | 2017-07-28 | Assembly machine for ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107398725B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607414B (en) * | 2019-01-25 | 2023-11-10 | 南京工艺装备制造有限公司 | Device for assembling large ball screw pair |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138461A (en) * | 1991-11-20 | 1993-06-01 | Honda Motor Co Ltd | Method for supplying ball to nut screw |
| GB9625343D0 (en) * | 1995-12-05 | 1997-01-22 | Honda Motor Co Ltd | Ball quantitative supply system |
| JPH11270649A (en) * | 1998-03-25 | 1999-10-05 | Nippon Seiko Kk | Ball screw device |
| JP2004114224A (en) * | 2002-09-26 | 2004-04-15 | Nsk Ltd | Method for assembling ball screw device and device for assembling the same |
| CN102990279A (en) * | 2011-09-13 | 2013-03-27 | 浙江瑞远机床有限公司 | X-axis ball screw assembly fixture of numerically controlled lathe and method for using X-axis ball screw assembly fixture of numerically controlled lathe |
| CN103732950A (en) * | 2011-08-17 | 2014-04-16 | 日本精工株式会社 | Ball screw and assembly method therefor |
| CN204642486U (en) * | 2015-04-14 | 2015-09-16 | 浙江商业职业技术学院 | Ball-screw screw thread pair assembly support |
| CN207358539U (en) * | 2017-07-28 | 2018-05-15 | 无锡双益精密机械有限公司 | A kind of assembly machine for ball screw assembly, |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160096163A (en) * | 2014-02-27 | 2016-08-12 | 히다치 오토모티브 시스템즈 가부시키가이샤 | Power steering device and method for manufacturing ball screw for power steering device |
-
2017
- 2017-07-28 CN CN201710630352.9A patent/CN107398725B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138461A (en) * | 1991-11-20 | 1993-06-01 | Honda Motor Co Ltd | Method for supplying ball to nut screw |
| GB9625343D0 (en) * | 1995-12-05 | 1997-01-22 | Honda Motor Co Ltd | Ball quantitative supply system |
| JPH11270649A (en) * | 1998-03-25 | 1999-10-05 | Nippon Seiko Kk | Ball screw device |
| JP2004114224A (en) * | 2002-09-26 | 2004-04-15 | Nsk Ltd | Method for assembling ball screw device and device for assembling the same |
| CN103732950A (en) * | 2011-08-17 | 2014-04-16 | 日本精工株式会社 | Ball screw and assembly method therefor |
| CN102990279A (en) * | 2011-09-13 | 2013-03-27 | 浙江瑞远机床有限公司 | X-axis ball screw assembly fixture of numerically controlled lathe and method for using X-axis ball screw assembly fixture of numerically controlled lathe |
| CN204642486U (en) * | 2015-04-14 | 2015-09-16 | 浙江商业职业技术学院 | Ball-screw screw thread pair assembly support |
| CN207358539U (en) * | 2017-07-28 | 2018-05-15 | 无锡双益精密机械有限公司 | A kind of assembly machine for ball screw assembly, |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107398725A (en) | 2017-11-28 |
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