CN112518372A - Positioning fixture for finish milling key groove of motor shaft - Google Patents
Positioning fixture for finish milling key groove of motor shaft Download PDFInfo
- Publication number
- CN112518372A CN112518372A CN202011453002.8A CN202011453002A CN112518372A CN 112518372 A CN112518372 A CN 112518372A CN 202011453002 A CN202011453002 A CN 202011453002A CN 112518372 A CN112518372 A CN 112518372A
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- CN
- China
- Prior art keywords
- positioning
- block
- base
- oil cylinder
- motor shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003801 milling Methods 0.000 title claims abstract description 14
- 210000000078 claw Anatomy 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/30—Milling straight grooves, e.g. keyways
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a positioning fixture for finish milling of a key groove of a motor shaft, which comprises a base, a clamping unit, an axial positioning block and an angular positioning unit, wherein two clamping tooth claws of the clamping unit can be driven to lift by a connecting rod and a connecting block respectively, and are matched with a V-shaped positioning groove of the axial positioning block to radially and axially position and clamp the motor shaft; the lifting direction of a rotary lifting oil cylinder of the angular positioning unit is vertical to the length direction of the V-shaped positioning groove, and the free end of the angular positioning block is positioned right above the V-shaped positioning groove and can be driven by the rotary lifting oil cylinder to move. The invention has simple structure, self-centering function, high repeated clamping precision and strong rigidity, and can improve the processing efficiency; the device has the mistake-proofing function, and avoids equipment, products, clamps and personnel damage; the universal fixture has strong universality, and can be suitable for motor shafts of different specifications by replacing the angular positioning block, the clamping tooth claw and the axial positioning block.
Description
Technical Field
The invention belongs to the field of clamps for machining, and particularly relates to a positioning clamp used for finish milling of a key groove of a motor shaft.
Background
The motor shaft is often required to be processed with a key groove with the length direction parallel to the axis of the motor shaft, the precision requirement is very high, the positioning clamp has high requirement on the positioning clamp during processing, the positioning clamp has high precision, and meanwhile, the rigidity is also required to be ensured.
Disclosure of Invention
In view of this, the present invention provides a positioning fixture for finish milling a key slot on a motor shaft, which specifically includes:
a base;
the clamping unit comprises a base, a lifting oil cylinder, a connecting block, two connecting rods and two clamping claws; the base is fixed on the base, and is provided with a Y-shaped guide through hole integrally formed by a lower slotted hole section and oblique hole sections extending from two oblique sides of the upper part; the lifting oil cylinder is fixed under the base, and the telescopic rod of the lifting oil cylinder is fixedly connected with the connecting block; the connecting block is arranged in the lower slotted hole section of the Y-shaped guide through hole; the two connecting rods respectively penetrate through the corresponding inclined hole sections of the Y-shaped guide through holes in a sliding manner, and can be driven by the connecting block to lift along the inclined hole sections; the upper part of each connecting rod exposed out of the inclined hole section is fixedly connected with a clamping claw;
the axial positioning block is fixed on the base and positioned below the space between the two clamping tooth claws, and the upper end of the axial positioning block is provided with a V-shaped positioning groove;
and the angular positioning unit comprises a rotary lifting oil cylinder and an angular positioning block fixed on the oil cylinder rod, the rotary lifting oil cylinder is arranged in the side direction of the length direction of the V-shaped positioning groove, the lifting direction of the rotary lifting oil cylinder is vertical to the length direction of the V-shaped positioning groove, and the free end of the angular positioning block is positioned right above the V-shaped positioning groove and can move to the position right above the V-shaped positioning groove under the driving of the rotary lifting oil cylinder.
A first shoulder retaining ring and a second shoulder retaining ring are sequentially arranged on the circumferential side of the connecting block from top to bottom, and a gap is reserved between the two shoulder retaining rings; the side part of the lower end of each connecting rod is provided with a connecting groove, the two side parts of the first shoulder blocking ring of the connecting block respectively extend into the connecting grooves of the corresponding connecting rods in a sliding manner, and the groove wall block below the connecting groove extends into a gap between the first shoulder blocking ring and the second shoulder blocking ring in a sliding manner.
The shaft end positioning device is characterized by further comprising a shaft end positioning unit, the shaft end positioning unit comprises a shaft end rotary telescopic oil cylinder and a shaft end positioning block, the shaft end rotary telescopic oil cylinder is located in the length direction of the V-shaped positioning groove, the telescopic direction is parallel to the length direction of the V-shaped positioning groove, and the free end of the shaft end positioning block can be attached to the end face of one axial end of the motor shaft under the driving of the shaft end rotary telescopic oil cylinder.
The connecting rod is provided with a guide surface parallel to the rod axis, and the inclined hole section of the Y-shaped guide through hole of the base is also provided with a corresponding guide surface.
The base is provided with an adjusting screw hole communicated with each inclined hole section correspondingly.
The center of the upper end of the connecting block is provided with a vertical guide bulge, the base is provided with a corresponding vertical guide hole, and the vertical guide hole is positioned between the two oblique hole sections of the Y-shaped guide through hole and communicated with the lower slot hole section.
And hanging rings are fixed at four corners of the base.
The invention has simple structure, self-centering function, high repeated clamping precision and strong rigidity, and can improve the processing efficiency; the device has the mistake-proofing function, and avoids equipment, products, clamps and personnel damage; the universal fixture has strong universality, and can be suitable for motor shafts of different specifications by replacing the angular positioning block, the clamping tooth claw and the axial positioning block.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the clamping unit and the axial positioning block;
FIG. 3 is a cross-sectional view of the clamping unit and the axial locating block;
FIG. 4 is a perspective view of the clamping unit with the base hidden;
FIG. 5 is a schematic view illustrating a state where the motor shaft is clamped and positioned according to the present invention;
fig. 6 is a schematic perspective view of the present invention with an additional shaft end positioning unit.
In the figure, a base 1; a base 2; a vertical guide hole 27; an angled bore section 28; an adjustment screw hole 29; an axial positioning block 3; a V-shaped positioning groove 31; a clamping jaw 4; an angular positioning unit 5; an angular positioning block 51; a lift cylinder 6; a coupling block 7; a first retaining shoulder ring 71; a second shoulder ring 72; a vertical guide projection 73; a connecting rod 8; the coupling groove 81; a lower slot wall block 811; a guide surface 82; a hanging ring 9; a motor shaft 10; a shaft end positioning unit 11; shaft end positioning block 111.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in the figure, the positioning fixture for finish milling of the key groove of the motor shaft comprises a base 1, a clamping unit, an axial positioning block 3 and an angular positioning unit 5;
as shown in fig. 2 to 4, the clamping unit includes a base 2, a lift cylinder 6, a coupling block 7, two connecting rods 8 and two clamping jaws 4;
the base 2 is fixed on the base 1, and the base 2 is provided with a Y-shaped guide through hole which is integrally formed by a lower slotted hole section 21 and an upper inclined hole section 28 extending from two inclined sides;
the lifting oil cylinder 6 is fixed under the base 1, and the telescopic rod of the lifting oil cylinder penetrates through the base 1 and then is fixedly connected with the bottom of the connecting block 7;
the connecting block 7 is arranged in the lower slotted hole section 21 of the Y-shaped guide through hole, the peripheral side of the connecting block is sequentially provided with a first shoulder retaining ring 71 and a second shoulder retaining ring 72 from top to bottom, and a gap is reserved between the two shoulder retaining rings;
the two connecting rods 8 respectively penetrate through the two inclined hole sections 28 of the Y-shaped guide through hole in a sliding manner, and the two connecting rods 8 can be driven by the connecting block 7 to lift along the inclined hole sections 28;
specifically, a connecting groove 81 is formed in the side portion of the lower end of each connecting rod 8, two side portions of a first shoulder blocking ring 71 of each connecting block 7 respectively extend into the corresponding connecting grooves 81 of the connecting rods 8, and a lower groove wall block 811 of each connecting groove 81 extends into a gap between the first shoulder blocking ring 71 and a second shoulder blocking ring 72;
the upper part of each connecting rod 8 exposed out of the inclined hole section 28 is fixedly connected with a clamping claw 4 through a bolt;
the axial positioning block 3 is fixed on the base 2 and is positioned below the space between the two clamping tooth claws 4, and the upper end of the axial positioning block is provided with a V-shaped positioning groove;
the angular positioning unit 5 comprises a rotary lifting oil cylinder and an angular positioning block 51 fixed on an oil cylinder rod, the rotary lifting oil cylinder of the angular positioning unit 5 is arranged in the lateral direction of the length direction of the V-shaped positioning groove, the lifting direction of the rotary lifting oil cylinder is vertical to the length direction of the V-shaped positioning groove, and the free end of the angular positioning block 51 is positioned right above the V-shaped positioning groove and can move to the V-shaped positioning groove under the driving of the rotary lifting oil cylinder;
when the tool is in a standby state, the lifting oil cylinder 6 is in an extending state, a sufficient gap is reserved between the two clamping tooth claws 4, the motor shaft 10 is placed into the V-shaped positioning groove of the axial positioning block 3 from the gap, and the V-shaped positioning groove is used for carrying out radial coarse positioning on the motor shaft; in addition, the annular shoulder part 1001 on the motor shaft 10 can be manually abutted against the length direction opening end surface of the V-shaped positioning groove of the axial positioning block 3 to manually position the motor shaft in the axial direction; the angular positioning unit 5 carries out angular positioning on one end of the motor shaft; the telescopic rod of the lifting oil cylinder 6 retracts, the two clamping tooth claws 4 are driven to press downwards through the connecting block 7 and the two connecting rods 8, and the motor shaft is clamped in the V-shaped positioning groove of the axial positioning block 3; after clamping, the angular positioning block 51 can be automatically moved away so as not to influence finish milling;
compared with a manual angular positioning method, the angular positioning unit 5 has an error-proofing function, and once the angular positioning unit is forgotten to move away in the manual condition, the angular positioning unit can collide with a cutter, so that equipment, a clamp and a product are damaged, and the situation that the angular positioning unit is forgotten to move away does not exist in hydraulic control.
As shown in fig. 6, a shaft end positioning unit 11 may be further added, the shaft end positioning unit 11 includes a shaft end rotary telescopic cylinder and a shaft end positioning block 111, the shaft end rotary telescopic cylinder is located in the length direction of the V-shaped positioning groove, the telescopic direction is parallel to the length direction of the V-shaped positioning groove, and the shaft end positioning block 111 can be driven by the shaft end rotary telescopic cylinder to have its free end abutted against the axial end face of the motor shaft 10, so as to achieve the axial automatic positioning of the motor shaft, instead of the aforementioned manual positioning.
Further, in order to prevent the connecting rod 8 from slightly rotating in the lifting process, the connecting rod 8 is cut off to form a guide surface 81, and the inclined hole section 28 of the Y-shaped guide through hole of the base 2 is also provided with a corresponding guide surface;
further, in order to facilitate fine adjustment of the pressing angle of the clamping jaw 4, the base 2 may further be provided with an adjusting screw hole 29 corresponding to each inclined hole section 28 and communicating with the inclined hole section, and the adjusting screw bolt may abut against the connecting rod 8 in the inclined hole section 28 to achieve fine adjustment of the pressing angle of the clamping jaw 4.
Further, in order to enhance the stability of the connecting block 7 during lifting, a vertical guide protrusion 73 is arranged at the center of the upper end of the connecting block 7, a corresponding vertical guide hole 27 is formed in the base 2, and the vertical guide hole 27 is located between the two inclined hole sections 28 of the Y-shaped guide through hole and communicated with the lower slot hole section 21.
In order to facilitate the integral movement, the four corners of the base 1 are also fixed with hanging rings 9.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. Positioning fixture for motor shaft finish milling keyway, its characterized in that includes:
a base (1);
the clamping unit comprises a base (2), a lifting oil cylinder (6), a connecting block (7), two connecting rods (8) and two clamping claws (4); the base (2) is fixed on the base (1), and the base (2) is provided with a Y-shaped guide through hole which is integrally formed by a lower slotted hole section (21) and oblique hole sections (28) extending from two oblique sides of the upper part; the lifting oil cylinder (6) is fixed under the base (1), and the telescopic rod of the lifting oil cylinder is fixedly connected with the connecting block (7); the connecting block (7) is arranged in a lower slotted hole section (21) of the Y-shaped guide through hole; the two connecting rods (8) are respectively slidably arranged in the corresponding inclined hole sections (28) of the Y-shaped guide through holes in a penetrating manner, and the two connecting rods (8) can be driven by the connecting block (7) to lift along the inclined hole sections (28); the upper part of each connecting rod (8) exposed out of the inclined hole section (28) is fixedly connected with a clamping claw (4);
the axial positioning block (3) is fixed on the base (2) and positioned below the space between the two clamping tooth claws (4), and the upper end of the axial positioning block is provided with a V-shaped positioning groove;
and the angular positioning unit (5) comprises a rotary lifting oil cylinder and an angular positioning block (51) fixed on the oil cylinder rod, the rotary lifting oil cylinder is arranged in the side direction of the length direction of the V-shaped positioning groove, the lifting direction of the rotary lifting oil cylinder is vertical to the length direction of the V-shaped positioning groove, and the free end of the angular positioning block (51) is positioned right above the V-shaped positioning groove and can be driven by the rotary lifting oil cylinder to move.
2. The positioning fixture for finish milling of the key groove on the motor shaft as set forth in claim 1, wherein a first shoulder retaining ring (71) and a second shoulder retaining ring (72) are sequentially arranged on the circumferential side of the coupling block (7) from top to bottom, and a gap is reserved between the two shoulder retaining rings; a connecting groove (81) is formed in the side portion of the lower end of each connecting rod (8), two side portions of a first shoulder blocking ring (71) of each connecting block (7) respectively extend into the connecting grooves (81) of the corresponding connecting rods (8) in a sliding mode, and a groove wall block (811) below each connecting groove (81) extends into a gap between the first shoulder blocking ring (71) and a second shoulder blocking ring (72) in a sliding mode.
3. The positioning fixture for finish milling of the key slot on the motor shaft according to claim 1, further comprising a shaft end positioning unit (11) which comprises a shaft end rotary telescopic cylinder and a shaft end positioning block (111), wherein the shaft end rotary telescopic cylinder is located in the length direction of the V-shaped positioning slot, the telescopic direction of the shaft end rotary telescopic cylinder is parallel to the length direction of the V-shaped positioning slot, and the free end of the shaft end positioning block (111) can be attached to the end face of one axial end of the motor shaft (10) under the driving of the shaft end rotary telescopic cylinder.
4. The positioning fixture for finish milling of key grooves on motor shafts as claimed in claim 1, wherein the connecting rod (8) is cut to form a guide surface (81) parallel to the shaft center of the connecting rod, and the oblique hole section (28) of the Y-shaped guide through hole of the base (2) is also provided with a corresponding guide surface.
5. The positioning fixture for finish milling of the key slot on the motor shaft as claimed in claim 1, wherein the base (2) is further provided with an adjusting screw hole (29) corresponding to each inclined hole section (28).
6. The positioning fixture for finish milling of the key slot on the motor shaft as claimed in claim 1, wherein a vertical guide protrusion (73) is provided at the center of the upper end of the coupling block (7), the base (2) is provided with a corresponding vertical guide hole (27), and the vertical guide hole (27) is located between two oblique hole sections (28) of the Y-shaped guide through hole and communicated with the lower slot hole section (21).
7. The positioning fixture for finish milling of the key slot on the motor shaft as claimed in claim 1, wherein hanging rings (9) are further fixed at four corners of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453002.8A CN112518372A (en) | 2020-12-11 | 2020-12-11 | Positioning fixture for finish milling key groove of motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453002.8A CN112518372A (en) | 2020-12-11 | 2020-12-11 | Positioning fixture for finish milling key groove of motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112518372A true CN112518372A (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011453002.8A Pending CN112518372A (en) | 2020-12-11 | 2020-12-11 | Positioning fixture for finish milling key groove of motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112518372A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441972A (en) * | 2021-08-31 | 2021-09-28 | 烟台拉斐尔生物科技有限公司 | Fixing instrument for processing bone fracture plate for medical orthopedics department |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205437928U (en) * | 2016-03-22 | 2016-08-10 | 海盐孚邦机械有限公司 | Sprayer push plate device processes novel anchor clamps |
| DE202018106562U1 (en) * | 2018-11-20 | 2019-01-11 | Chun-Wei Chang | Modular parallel vise construction |
| CN209698555U (en) * | 2019-03-28 | 2019-11-29 | 洛阳豫甲汽车零部件有限公司 | A kind of common shaft class keyseat clamp |
| CN210615880U (en) * | 2019-08-28 | 2020-05-26 | 江苏新贝斯特智能制造有限公司 | Motor shaft keyseat clamp |
| CN213998565U (en) * | 2020-12-11 | 2021-08-20 | 天津天海精密锻造有限公司 | Positioning fixture for finish milling key groove of motor shaft |
-
2020
- 2020-12-11 CN CN202011453002.8A patent/CN112518372A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205437928U (en) * | 2016-03-22 | 2016-08-10 | 海盐孚邦机械有限公司 | Sprayer push plate device processes novel anchor clamps |
| DE202018106562U1 (en) * | 2018-11-20 | 2019-01-11 | Chun-Wei Chang | Modular parallel vise construction |
| CN209698555U (en) * | 2019-03-28 | 2019-11-29 | 洛阳豫甲汽车零部件有限公司 | A kind of common shaft class keyseat clamp |
| CN210615880U (en) * | 2019-08-28 | 2020-05-26 | 江苏新贝斯特智能制造有限公司 | Motor shaft keyseat clamp |
| CN213998565U (en) * | 2020-12-11 | 2021-08-20 | 天津天海精密锻造有限公司 | Positioning fixture for finish milling key groove of motor shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441972A (en) * | 2021-08-31 | 2021-09-28 | 烟台拉斐尔生物科技有限公司 | Fixing instrument for processing bone fracture plate for medical orthopedics department |
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