CN220178739U - Precision machining clamp for platen parts - Google Patents
Precision machining clamp for platen parts Download PDFInfo
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- CN220178739U CN220178739U CN202322681500.3U CN202322681500U CN220178739U CN 220178739 U CN220178739 U CN 220178739U CN 202322681500 U CN202322681500 U CN 202322681500U CN 220178739 U CN220178739 U CN 220178739U
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- clamping
- mandrel
- seat
- claw
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- 238000003754 machining Methods 0.000 title claims abstract description 18
- 210000000078 claw Anatomy 0.000 claims abstract description 43
- 239000000428 dust Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model relates to a precision machining fixture for a platen part, belongs to the field of tool fixtures for machining, and is suitable for precision machining of the platen part. The structure comprises a bottom plate, and a fixed clamping and positioning device, a floating clamping device and a universal adjustable side roof device are arranged on the bottom plate. The floating clamping device consists of a clamping nut, a guide pin I, a lower claw, a guide shaft, a sliding base, an adjusting screw, an upper claw, a guide pin II, a dust cover, a fixed base, a mandrel, a spring I, a spring II, a rotary guide seat, a clamping spring seat and a spring III. The clamp applies the space cam guiding and cross universal transmission principle, has the advantages of simple structure, safety, reliability, high positioning sensitivity and precision, improves the production efficiency, ensures the stability of the machining precision of workpieces, and greatly reduces the production cost.
Description
Technical Field
The utility model relates to a precision machining clamp for platen parts, and belongs to the field of tool clamps for machining.
Background
In the field of machining, finish machining of platen parts such as saddles, sliding seats, working tables, sliding plates and the like is always a difficult point of the domestic machining industry, and the parallelism requirements of the upper surface and the lower surface of the platen parts and the flatness requirements of single surfaces are extremely high, and the perpendicularity requirements of the platen parts and other surfaces such as screw seat surfaces are also high. Therefore, the platen part finish machining adopts a clamping mode of 'three points are real and one point are virtual'. In the traditional modes of pressing, paper backing, adjustable support and the like, operators are required to continuously adjust the gesture of the workpiece so as to meet the processing requirement. The requirements on the technical capability are high, the artificial subjective influence factors are large, the precision stability of the produced workpiece is uncontrollable, the auxiliary working time is long, and the production cost is intangibly raised.
Disclosure of Invention
The utility model provides a precision machining fixture for platen parts, which ensures that the precision stability of a workpiece is controllable through the fixture, eliminates artificial subjective influence factors and reduces auxiliary working hours. The clamp uses the space cam guiding and cross universal transmission principle. The structure is simple, the positioning sensitivity and the positioning accuracy are high, the production efficiency is improved, the precision stability of the workpiece is ensured, and the production cost is greatly reduced.
In order to solve the technical problems, the specific technical scheme of the utility model is as follows: a precision machining clamp for platen parts comprises a bottom plate, wherein 3 fixed clamping and positioning devices, 1 floating clamping device and 2 universal adjustable side jacking devices are arranged on the bottom plate; the 3 fixed clamping positioning devices and the 1 floating clamping device correspond to four corners of the part to be clamped, and the 2 universal adjustable side jacking devices correspond to side positions of the part to be clamped;
the floating clamping device comprises a fixed base, a sliding base is arranged on the fixed base, a through hole is formed in the sliding base, and the bottom of the mandrel is inserted into the through hole; the clamping spring seat is sleeved outside the bottom of the mandrel, the lower part of the clamping spring seat is arranged between the mandrel and the sliding base, the upper part of the clamping spring seat extends outwards and is exposed out of the sliding base, and a spring III is arranged between the top surface of the sliding base and the upper extending part of the clamping spring seat;
the middle part of the mandrel is provided with a hole matched with the guide pin I, the middle part of the mandrel is sleeved with a lower claw, the lower part of the mandrel is outwards provided with a lower spring limiting table, the lower part of the lower claw is inwards provided with an upper spring limiting table, and a spring II is arranged between the lower spring limiting table and the upper spring limiting table; the lower clamping jaw is provided with U-shaped holes on the front side and the rear side, the guide pin I is arranged between the hole of the mandrel and the U-shaped holes of the lower clamping jaw, and the mandrel moves up and down along the U-shaped holes along with the guide pin I; the upper part of the guide shaft is arranged outside the lower claw, and the lower part of the guide shaft is arranged on the sliding base;
a rotary guide seat is sleeved outside the upper part of the mandrel, the bottom of the rotary guide seat is connected with the top surface of the lower claw, an upper claw is sleeved outside the upper part of the rotary guide seat, and a spring I is arranged between the upper surface of the bottom of the rotary guide seat and the lower surface of the upper claw; the side wall of the upper claw is provided with a through hole matched with a guide pin II, the rotary guide seat is provided with a guide groove, the guide groove is two straight grooves which are intersected in a 135-degree V shape along the normal projection of the outer circumference of the rotary guide seat, the guide pin II is arranged between the guide groove of the rotary guide seat and the through hole of the upper claw, and the guide pin II moves in the guide groove;
the top of the mandrel is provided with a clamping nut, and the bottom of the clamping nut is in compression contact with the upper surface of the upper claw.
The lower claw and one side of the upper claw extend out, the extending direction corresponds to the extending direction, the extending end of the upper claw is provided with an adjusting screw, and the adjusting screw can move up and down along the threaded hole of the upper claw.
The upper part of the mandrel is provided with threads matched with the clamping nut, and the middle of the mandrel is provided with a hole in interference fit with the guide pin I; the bottom of the mandrel is a conical side surface with a narrow upper part and a wide lower part, and is matched with a conical hole with a narrow upper part at the bottom of the clamp spring seat.
The lower part of the clamp spring seat is 8-degree conical matched with the mandrel, and rectangular grooves are uniformly formed in the lower part of the clamp spring seat along the circumferential direction.
Spring compression resistance of the springs I, II and III: spring III > spring II > spring I.
The upper part of the fixed base is provided with two T-shaped grooves, and the sliding base is arranged on the upper part of the fixed base through bolts and T-shaped blocks; the dust cover is arranged at the outer side of the clamp spring seat through a screw.
The fixed clamping and positioning device comprises a pressing plate, a positioning block, a supporting pillow, a clamping bolt, a cushion block and a jacket spring; the support pillow is of an I-shaped structure, a T-shaped groove is formed in the upper portion of the support pillow, a positioning block and a clamping bolt are arranged in the T-shaped groove, and the relative position of the support pillow can be adjusted along the T-shaped groove; the clamping bolt is provided with an outer sleeve spring, the upper part of the clamping bolt penetrates through the pressing plate, and the top of the clamping bolt is provided with a compression nut.
The universal adjustable side jacking device comprises a supporting body, a threaded through hole matched with an adjusting screw is formed in the upper portion of the supporting body, the adjusting screw penetrates through the threaded through hole of the supporting body, a circular through hole for installing a handle is formed in one end of the adjusting screw, and a side jacking head is installed at the other end of the adjusting screw.
The side top head is provided with a universal adjusting block, an inner ring and an outer ring from inside to outside; the universal adjusting block is matched with the inner ring through a pin shaft; the inner ring is matched with the outer ring through a pin shaft.
The beneficial effects of the utility model are as follows: the platen part finish machining fixture is suitable for finish machining procedures of thin plate parts such as machine tool saddles, sliding seats, working tables, sliding plates and the like, and is simple in structure, easy to operate, low in technical requirements on operators and high in positioning sensitivity and precision. Auxiliary working hours can be effectively reduced, and the stability of the machining precision of the workpiece is ensured while the production efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an isometric view of a fixed clamp positioning device;
FIG. 3 is an isometric view of a floating clamp;
FIG. 4 is a cross-sectional view of the floating clamp device;
FIG. 5 is an isometric view of a circlip seat;
FIG. 6 is an isometric view of a rotary steerable seat;
FIG. 7 is an exploded view of a universally adjustable side roof assembly;
fig. 8 is a schematic view of the working state of the present utility model.
Wherein, 1 bottom plate, 2 fixed clamping positioner: 2.1 pressing plate, 2.2 positioning blocks, 2.3 supporting pillows, 2.4 clamping bolts, 2.5 cushion blocks, 2.6 outer sleeve springs, 3 floating clamping devices: 3.1 clamping nut, 3.2 guide pin II, 3.3 lower jaw, 3.4 guide shaft, 3.5 sliding base, 3.6 adjusting screw, 3.7 upper jaw, 3.8 guide pin I, 3.9 dust cover, 3.10 fixed base, 3.11 mandrel, 3.12 spring I, 3.13 spring II, 3.14 rotating guide seat, 3.15 clamping spring seat, 3.16 spring III,4 universal adjustable side roof device; 4.1 handles, 4.2 supporting bodies, 4.3 adjusting screws, 4.4 outer rings, 4.5 check rings for shafts, 4.6 inner rings and 4.7 universal adjusting blocks.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
as shown in fig. 1, the utility model comprises a bottom plate 1, a fixed clamping and positioning device 2, a floating clamping device 3, a universal adjustable side roof device 4 and the like.
The bottom plate 1 is a rectangular thin plate, and a convex-shaped cavity is machined in the bottom plate to reduce weight. The rings are arranged around the bottom plate, the devices are arranged on the upper portion of the bottom plate 1, and the bottom plate 1 is fixed on a machine tool workbench through T-shaped blocks and bolts.
As shown in fig. 2, the fixing, clamping and positioning device 2 is a typical screw press plate clamping combination, and comprises a press plate 2.1, a positioning block 2.2, a supporting pillow 2.3, a clamping bolt 2.4, a cushion block 2.5 and a casing spring 2.6, wherein the supporting pillow 2.3 is of an I-shaped structure, a T-shaped groove is formed in the upper portion of the supporting pillow, the positioning block 2.2 and the clamping bolt 2.4 are arranged on the upper portion of the supporting pillow, and the relative positions of the cushion block 2.5 can be adjusted through the T-shaped groove so as to adapt to different workpieces.
As shown in fig. 3 and 4, the floating clamping device 3 comprises a mandrel 3.11, the upper part of the mandrel is provided with threads which are matched with a clamping nut 3.1, the middle part of the mandrel is provided with a through hole which is in interference fit with a guide pin I3.8, the guide pin I3.8 is arranged between a hole of the mandrel 3.11 and a U-shaped hole of a lower claw 3.3, and the lower part of the guide pin I3.8 is provided with an 8-degree conical surface which is in interference fit with a clamp spring seat 3.15 when the device is clamped. The spring II3.13 is coaxial with the mandrel 3.11 and the upper part of the spring II is attached to the lower claw 3.3. One end of the upper claw 3.7 is provided with a thread, and the upper claw is matched with the adjusting screw 3.6 to be responsible for adjusting the clamping distance of the device. The other end is a through hole penetrating through the rotary guide seat 3.14, the lower part of the through hole is jointed with the spring I3.12, and the upper part of the through hole is jointed with the lower surface of the clamping nut 3.1. The hole wall on one side of the upper claw 3.7 is provided with a through hole, the guide pin II3.2 is in interference fit with the through hole, and as shown in figure 5, a guide groove is arranged in the rotary guide seat 3.14. The upper jaw 3.7 is moved by a guide pin II3.2 along a guide groove in the rotary guide seat 3.14. The spring I3.12 is coaxial with the rotary guide seat 3.14, the upper part of the spring I is jointed with the lower surface of the upper claw 3.7, and the lower part is jointed with the flange of the rotary guide seat 3.14.
As shown in fig. 6, the guiding grooves of the rotary guiding seat 3.14 are two straight grooves which are intersected in a 135-degree V shape along the normal projection of the outer circumference of the cylindrical body of the rotary guiding seat 3.14. The guide pin II3.2 is arranged between a guide groove of the rotary guide seat 3.14 and a through hole of the upper claw 3.7, and the lower part of the rotary guide seat 3.14 is connected with the upper part of the lower claw 3.3 through bolts.
The middle part of the lower claw 3.3 is provided with a through hole, the mandrel 3.11 passes through the through hole, the front side and the rear side of the through hole are provided with U-shaped holes, and the mandrel 3.11 moves up and down along the U-shaped holes along with the guide pin I3.8. And limits the circular movement of the spindle 3.11. The right side of the lower jaw 3.3 is provided with a circular through hole which is matched with the guide shaft 3.4 and can move along the axial direction of the lower jaw. The lower part of the lower claw 3.3 is connected with the clamp spring seat 3.15 through bolts.
As shown in fig. 5, a through hole is formed in the clamp spring seat 3.15, the lower part of the clamp spring seat 3.15 is 8-degree conical matched with the mandrel 3.11, and rectangular grooves are uniformly machined in the lower part of the clamp spring seat 3.15 along the circumferential direction. The outer circle of the clamping spring seat 3.15 is in clearance fit with the middle through hole of the sliding base 3.5 and moves along the axial direction of the clamping spring seat, the spring III3.16 is coaxial with the clamping spring seat 3.15, the upper part of the spring III3.16 is attached to the flange of the clamping spring seat 3.15, and the lower part is attached to the upper surface of the sliding base 3.5. The right side of the sliding base 3.5 is provided with a threaded hole. One end of the guide shaft 3.4 is connected with screw threads. The other end passes through the right through hole of the lower jaw 3.3 and the axial position of the lower jaw is limited by a nut.
Spring compression resistance of springs I3.12, II3.13, III 3.16: spring III3.16 > spring II3.13 > spring I3.12.
Two T-shaped grooves are formed in the upper portion of the fixed base 3.10, and the sliding base 3.5 is mounted on the upper portion of the fixed base 3.10 through bolts and T-shaped blocks and adjusts the proper position according to the size and the position of a workpiece. The dust cover 3.9 is arranged on the flange of the clamp spring seat 3.15 through screws.
As shown in fig. 7, the universal adjustable side-top device 4 mainly comprises a support body 4.2, a threaded through hole is formed in the upper portion of the support body and matched with the adjusting screw 4.3, and the adjusting screw 4.3 penetrates through the threaded through hole of the support body 4.2. The left end of the adjusting screw 4.3 is provided with a circular through hole for installing the handle 4.1, and the right side is provided with a shaft shoulder and an annular groove for installing the shaft retainer ring 4.5 and the outer ring 4.4. Two through holes are formed in the circumferential direction of the outer ring 4.4, two through holes are formed in the circumferential direction of the inner ring 4.6, and the outer ring 4.4 and the inner ring 4.6 are matched through a pin shaft and rotate along the pin shaft. Two through holes are additionally arranged in the circumferential direction of the inner ring 4.6, are arranged at an included angle of 90 degrees with the through holes of the outer ring, are matched with the universal adjusting block 4.7 through a pin shaft, and rotate along the pin shaft.
Working principle:
the working process of the utility model is as follows: as shown in fig. 8, the workpiece to be processed is lifted above the clamp by a T52 horizontal lathe saddle of my company. The clamping bolts 2.4 in the fixed clamping and positioning device 2 are loosened, and the pressing plate 2.1 is adjusted to a non-interference position. The clamping nut 3.1 in the floating clamping device 3 is loosened in a rotating way, at the moment, the spring II3.13 is in a compressed state, the spring II3.13 stretches to the maximum position, the mandrel 3.11 is driven to move downwards, and the clamp spring seat 3.15 is separated from the mandrel 3.11; the spring III3.16 is in a compressed state, and the clamp spring seat 3.15 is separated from the limit of the mandrel 3.11, so that the spring III3.16 stretches to the maximum stretching position to drive the clamp spring seat 3.15 to move upwards. Continuing to rotate the clamping nut 3.1, the upper claw 3.7 moves along the rotary guide seat 3.14 by means of the pressure of the spring I3.12 until the guide pin II3.2 reaches the final position of the guide groove, and at the moment, the upper claw 3.7 has rotated 90 degrees to avoid the workpiece. The adjusting screw 4.3 in the universal adjustable side roof device 4 is loosened to a proper position. Slowly placing down the workpiece, and attaching the lower surface of the workpiece to the upper surfaces of the positioning block 2.2 and the lower claw 3.3. And 4.3, screwing an adjusting screw rod and positioning a workpiece. And adjusting the pressing plate 2.1 to a clamping position, and screwing the clamping bolt 2.4. The clamping nut 3.1 in the floating clamping device 3 is locked in a rotating mode, the upper clamping jaw 3.7 rotates to the 0 position and is attached to the upper surface of a workpiece, the clamping nut 3.1 is rotated continuously, the mandrel 3.11 moves upwards, and the clamping spring seat 3.15 is fixed with the sliding base 3.5 in a tensioning mode. And (5) finishing clamping the workpiece.
Claims (9)
1. The utility model provides a platen class part finish machining anchor clamps, includes bottom plate (1), its characterized in that: the bottom plate (1) is provided with 3 fixed clamping and positioning devices (2), 1 floating clamping device (3) and 2 universal adjustable side roof devices (4); the 3 fixed clamping positioning devices (2) and the 1 floating clamping devices (3) correspond to four corners of the part to be clamped, and the 2 universal adjustable side jacking devices (4) correspond to side positions of the part to be clamped;
the floating clamping device (3) comprises a fixed base (3.10), a sliding base (3.5) is arranged on the fixed base (3.10), a through hole is formed in the sliding base (3.5), and the bottom of the mandrel (3.11) is inserted into the through hole; the clamping spring seat (3.15) is sleeved outside the bottom of the mandrel (3.11), the lower part of the clamping spring seat (3.15) is arranged between the mandrel (3.11) and the sliding base (3.5), the upper part of the clamping spring seat extends outwards and exposes out of the sliding base (3.5), and a spring III (3.16) is arranged between the top surface of the sliding base (3.5) and the upper extending part of the clamping spring seat (3.15);
the middle part of the mandrel (3.11) is provided with a hole matched with the guide pin I (3.8), the middle part of the mandrel (3.11) is sleeved with a lower claw (3.3), the lower part of the mandrel (3.11) is outwards provided with a lower spring limiting table, the lower part of the lower claw (3.3) is inwards provided with an upper spring limiting table, and a spring II (3.13) is arranged between the lower spring limiting table and the upper spring limiting table; the front side and the rear side of the lower claw (3.3) are provided with U-shaped holes, a guide pin I (3.8) is arranged between the hole of the mandrel (3.11) and the U-shaped hole of the lower claw (3.3), and the mandrel (3.11) moves up and down along the U-shaped holes along with the guide pin I (3.8); the upper part of the guide shaft (3.4) is arranged outside the lower claw (3.3), and the lower part of the guide shaft (3.4) is arranged on the sliding base (3.5);
a rotary guide seat (3.14) is sleeved outside the upper part of the mandrel (3.11), the bottom of the rotary guide seat (3.14) is connected with the top surface of the lower claw (3.3), an upper claw (3.7) is sleeved outside the upper part of the rotary guide seat (3.14), and a spring I (3.12) is arranged between the upper surface of the bottom of the rotary guide seat (3.14) and the lower surface of the upper claw (3.7); the side wall of the upper claw (3.7) is provided with a through hole matched with the guide pin II (3.2), the rotary guide seat (3.14) is provided with a guide groove, the guide groove is two straight grooves which are projected along the outer circle Zhou Faxiang of the cylinder of the rotary guide seat (3.14) and are intersected in a 135-degree V shape, the guide pin II (3.2) is arranged between the guide groove of the rotary guide seat (3.14) and the through hole of the upper claw (3.7), and the guide pin II (3.2) moves in the guide groove;
the top of the mandrel (3.11) is provided with a clamping nut (3.1), and the bottom of the clamping nut (3.1) is in compression contact with the upper surface of the upper claw (3.7).
2. The platen-type part finishing jig according to claim 1, wherein: the lower claw (3.3) and the upper claw (3.7) extend out from one side, the extending direction corresponds to the extending direction, an adjusting screw (3.6) is arranged at the extending end of the upper claw (3.7), and the adjusting screw (3.6) can move up and down along the threaded hole of the upper claw (3.7).
3. The platen-type part finishing jig according to claim 1, wherein: the upper part of the mandrel (3.11) is provided with threads matched with the clamping nut (3.1), and the middle is provided with a hole in interference fit with the guide pin I (3.8); the bottom of the mandrel (3.11) is a conical side surface with a narrow upper part and a wide lower part, and is matched with a conical hole with a narrow lower part and a narrow upper part of the bottom of the clamp spring seat (3.15).
4. The platen-type part finishing jig according to claim 1, wherein: the lower part of the jump ring seat (3.15) is 8-degree conical matched with the mandrel (3.11), and rectangular grooves are uniformly machined in the lower part of the jump ring seat (3.15) along the circumferential direction.
5. The platen-type part finishing jig according to claim 1, wherein: spring compression resistance of the springs I (3.12), II (3.13) and III (3.16): spring III (3.16) > spring II (3.13) > spring I (3.12).
6. The platen-type part finishing jig according to claim 1, wherein: the upper part of the fixed base (3.10) is provided with two T-shaped grooves, and the sliding base (3.5) is arranged on the upper part of the fixed base (3.10) through bolts and T-shaped blocks; the dust cover (3.9) is arranged at the outer side of the clamp spring seat (3.15) through a screw.
7. The platen-type part finishing jig according to claim 1, wherein: the fixed clamping and positioning device (2) comprises a pressing plate (2.1), a positioning block (2.2), a supporting pillow (2.3), a clamping bolt (2.4), a cushion block (2.5) and an outer sleeve spring (2.6); the support pillow (2.3) is of an I-shaped structure, a T-shaped groove is formed in the upper portion of the support pillow, the positioning block (2.2) and the clamping bolt (2.4) are arranged in the T-shaped groove, and the cushion block (2.5) can be arranged in the T-shaped groove to adjust the relative position along the T-shaped groove; the clamping bolt (2.4) is provided with an outer sleeve spring (2.6), the upper part of the clamping bolt (2.4) penetrates through the pressing plate (2.1), and the top of the clamping bolt (2.4) is provided with a compression nut.
8. The platen-type part finishing jig according to claim 1, wherein: the universal adjustable side jacking device (4) comprises a supporting body (4.2), a threaded through hole matched with an adjusting screw (4.3) is formed in the upper portion of the supporting body (4.2), the adjusting screw (4.3) penetrates through the threaded through hole of the supporting body (4.2), a circular through hole for installing a handle (4.1) is formed in one end of the adjusting screw (4.3), and a side jacking head is installed at the other end of the adjusting screw.
9. The platen-type part finishing jig according to claim 8, wherein: the side top head is provided with a universal adjusting block (4.7), an inner ring (4.6) and an outer ring (4.4) from inside to outside; the universal adjusting block (4.7) is matched with the inner ring (4.6) through a pin shaft; the inner ring (4.6) is matched with the outer ring (4.4) through a pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322681500.3U CN220178739U (en) | 2023-10-08 | 2023-10-08 | Precision machining clamp for platen parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322681500.3U CN220178739U (en) | 2023-10-08 | 2023-10-08 | Precision machining clamp for platen parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220178739U true CN220178739U (en) | 2023-12-15 |
Family
ID=89102828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322681500.3U Active CN220178739U (en) | 2023-10-08 | 2023-10-08 | Precision machining clamp for platen parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220178739U (en) |
-
2023
- 2023-10-08 CN CN202322681500.3U patent/CN220178739U/en active Active
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