CN110977537A - Clamp for processing arc straight groove of rectangular plate - Google Patents
Clamp for processing arc straight groove of rectangular plate Download PDFInfo
- Publication number
- CN110977537A CN110977537A CN201911338969.9A CN201911338969A CN110977537A CN 110977537 A CN110977537 A CN 110977537A CN 201911338969 A CN201911338969 A CN 201911338969A CN 110977537 A CN110977537 A CN 110977537A
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- processing
- positioning seat
- plate
- arc
- rectangular plate
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Classifications
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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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Abstract
A clamp for processing the arc straight slot of a rectangular plate comprises a bottom plate, a positioning seat, a pressing plate, a cylindrical pin, a compression screw, an inner hexagonal plug screw and a return spring, wherein after a workpiece is clamped and fastened, the arc can be turned, bored, milled, ground, discharge-machined and the like, as long as the distance from the arc center to the end surface is fixed, the distance is theoretically constant as long as the tool is qualified and the clamping can not be in place during clamping, and the arc radius can be rapidly detected by adopting a conventional measuring method such as a vernier caliper, an inner diameter ruler and the like during processing, so that the manufacturing and processing are directly guided, when the accuracy requirement of the arc radius is very high, the inner diameter ruler can be used for rapidly detecting, the problems of high processing difficulty, processing period and detection period of the arc straight slot on the rectangular plate workpiece are solved, and the guiding significance of the detection result on actual processing is improved, the processing quality control difficulty of the parts is reduced, and the processing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a clamp for machining an arc straight groove of a rectangular plate.
Background
As shown in FIGS. 11-12, a straight circular arc groove is formed on one end face of a rectangular plate part, and the circular arc radius of the groove has high precision requirement and the tolerance is only 0.05. Meanwhile, the center line of the arc is parallel to the end face, the distance precision between the arc and the end face is high, and the tolerance is +/-0.05. When in processing, if the conventional profile milling processing method is adopted for processing, the processing efficiency is very low, and in the process of measuring on a machine tool, the processing tolerance is difficult to guarantee due to the limitation of a measuring method and measuring precision. If a special arc cutter is adopted for machining, the cutting force is large, the roughness after machining is poor, the service life of the cutter is short, and the precision after machining is difficult to control. If the workpiece is taken off from the processing equipment for inspection, the workpiece needs to be inspected after being corrected on special equipment, such as three-coordinate inspection, optical projection inspection, etc., which results in long inspection time and period. If the R gauge is used for detection, the actual arc radius value cannot be detected, and the distance from the arc center line to the end face cannot be detected. Therefore, the conventional detection method has little significance in guidance and operation of actual manufacturing and processing. If after off-line detection, unqualified phenomena exist and rework is needed, the workpiece is returned to the alignment machine tool, the difficulty and the workload are high, a large amount of manufacturing and processing time can be wasted, and the manufacturing and processing period of the product is greatly prolonged. The existing difficulty is more prominent, namely, the workpiece processing difficulty is high, the processing period is long, the detection period is long, and the detection result has little guiding significance on quality control in actual processing, so that the processing quality is difficult to control and the processing cost is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides a clamp for processing an arc straight groove of a rectangular plate.
The invention is realized by the following technical scheme.
The invention provides a clamp for processing an arc straight groove of a rectangular plate, which comprises a bottom plate, a positioning seat, a pressing plate, a cylindrical pin, a compression screw, an inner hexagonal plug screw and a return spring, wherein the cylindrical pin is arranged on the bottom plate;
the positioning seat is of an annular hollow structure, four square grooves communicated with the inner cavity are formed in the periphery of the inner wall of the annular wall of the positioning seat, pin holes are formed in the annular wall of the positioning seat, and the positioning seat is fixedly arranged on the bottom plate after cylindrical pins arranged on the bottom plate are inserted into the pin holes for positioning during installation;
the number of the pressing plates is four, the four pressing plates are respectively arranged in a square groove in the annular wall of the positioning seat, a threaded hole is formed in the annular wall of the positioning seat corresponding to the square groove, the inner hexagonal plug screw is arranged in the threaded hole, and the return spring penetrates through the inner hexagonal plug screw and is propped against the pressing plates;
the compression screws penetrate through the positioning seat and are propped against the pressing plates, when the clamping device is used, a workpiece to be processed is placed in the annular wall of the positioning seat, the pressing plates are arranged on the periphery of the annular wall of the positioning seat, the compression screws at the positions of the pressing plates are screwed down to extrude the pressing plates, and the workpiece to be processed is fastened in the four pressing plates.
And the safety pin penetrates through the annular wall of the positioning seat and is inserted into the safety pin hole of the pressing plate.
Furthermore, a concave spherical surface is arranged on the pressing plate, the head of the compression screw is spherical, and the compression screw is pressed against the concave spherical surface arranged on the pressing plate when being screwed down.
Further, the positioning device further comprises an inner hexagon screw, a plurality of threaded holes which are symmetrically distributed are formed in the corresponding position of the base plate and the positioning seat, and when the base plate is fixedly connected with the positioning seat, the base plate is tightly connected with the positioning seat through the threaded holes by the inner hexagon screw.
Furthermore, the number of the inner hexagonal screw plugs is eight, and two inner hexagonal screw plugs are arranged at each pressure plate along the radial direction of the positioning seat.
Furthermore, the number of the safety pins is eight, and two safety pins are arranged at each pressure plate along the radial direction of the positioning seat.
Furthermore, the number of the socket head cap screws is more than three, and the socket head cap screws are uniformly distributed along the circumference of the bottom plate.
Further, the number of the cylindrical pins is two, and the tolerance fit of the cylindrical pins is H7/m 6.
Further, the hardness of the pressing plate is lower than that of the workpiece to be processed.
Furthermore, a root cleaning groove is arranged at the intersection of the square groove and the inner annular wall of the positioning seat.
The invention has the beneficial effects that: the invention provides a clamp for processing an arc straight groove of a rectangular plate, which can perform processing such as turning, boring, milling, grinding, electric discharge processing and the like of the arc after clamping and fastening a workpiece, wherein the distance from the center of the arc to an end surface is fixed, the distance is theoretically constant as long as the tool is qualified and no clamping can not be in place during clamping, and the radius of the arc can be rapidly detected by adopting a conventional measuring method such as a vernier caliper, an inner diameter dial gauge and the like during processing, so that the manufacturing and processing are directly guided, when the precision requirement of the radius of the arc is high, the inner diameter kilometric ruler can be used for rapidly detecting, the problems of high processing difficulty, long processing period and long detection period of the arc straight groove on the rectangular plate workpiece are solved, the guiding significance of a detection result on actual processing is improved, and the processing quality control difficulty of the part is reduced, the processing cost is reduced.
Drawings
FIG. 1 is a schematic view of the mounting structure of the present invention;
FIG. 2 is a view from A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the positioning seat structure of the present invention;
FIG. 4 is a view from the direction B-B of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view taken at I of FIG. 3 in accordance with the present invention;
FIG. 6 is a schematic structural view of the base plate of the present invention;
FIG. 7 is a cross-sectional view of the invention of FIG. 6;
FIG. 8 is a schematic view of the construction of the platen of the present invention;
FIG. 9 is a right side view of FIG. 8 of the present invention;
FIG. 10 is a schematic view of the compression screw of the present invention;
FIG. 11 is a schematic view of the structure of a workpiece to be machined according to the present invention;
FIG. 12 is a top view of FIG. 11 in accordance with the present invention;
in the figure: 1-inner hexagonal screw, 2-cylindrical pin, 3-bottom plate, 4-pressing plate, 5-return spring, 6-inner hexagonal plug screw, 7-positioning seat, 71-square groove, 711-root cleaning groove, 8-compression screw and 9-safety pin.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1-2, the fixture for processing the arc straight groove of the rectangular plate mainly comprises parts such as an inner hexagonal screw 1, cylindrical pins 2, a bottom plate 3, a pressure plate 4, a return spring 5, an inner hexagonal plug screw 6, a positioning seat 7, a compression screw 8, a safety pin 9 and the like, wherein the bottom plate 3 is positioned by two cylindrical pins 2 and is fastened on the positioning seat 7 by four inner hexagonal screws 1; the four pressing plates 4 are arranged at the square groove 71 of the positioning seat 7, each pressing plate 4 is connected through a pressing screw 8 which is arranged on the positioning seat 7 through a thread, and the connection form is a spherical connection mechanism; each pressing plate 3 penetrates into the light hole by two safety pins 9, and the safety pins 9 are arranged on the positioning seat 7 in a threaded connection mode; each pressing plate 3 is pre-jacked towards the workpiece pressing direction by two return springs 5, and the return springs 5 are pressed into holes in the positioning seats 7 by the inner hexagonal screw plugs 6; the inner hexagonal plug 6 is installed on the positioning seat 7 in a threaded connection mode.
The socket head cap screws 1 are standard parts, the number of the drawings is 4, and the number of the parts can be increased or decreased according to the actual needs of the device, but not less than 3. The thread specification needs to meet the requirement of connection locking force.
The cylindrical pin 2 is a standard part, 2 cylindrical pins are selected, and the tolerance fit is H7/m 6. After the bottom plate 3 and the positioning seat 7 are assembled into an assembly, a pin hole is processed and finally the pin hole is installed.
As shown in fig. 3-5, the positioning seat 7 is made of 40Cr, and the hardness is HRC 28-32; the dimension L10 is 3-6 mm smaller than the width dimension B of the workpiece; the dimension L3 is designed according to the length dimension A of the workpiece, the precision of the dimension A is controlled within plus or minus 0.02 for the workpiece positioning to be controllable, and the tolerance of L3 is +0.03 to +0.05 mm; l2 is double of the nominal size L of the workpiece, the tolerance of the L2 is controlled within +/-0.015 mm, and the symmetry of the L2 is controlled within 0.01 mm; the phi D7 hole can be designed according to the operability when the part is assembled and disassembled, and the roughness requirement is below Ra1.6; l15 is 0.3- +0.5 mm; l16 is 3-8 mm; l17 is 1-2 mm larger than the thickness dimension C of the workpiece; the other sizes are matched with parts or standard parts to be assembled; each sharp edge rounding R1 is in smooth transition.
As shown in fig. 6-7, the base plate 3 is made of carbon steel. Wherein, the hole for installing the cylindrical pin 2 needs to be processed after being assembled with the positioning seat 7 into an assembly. The diameter of the inner hole phi D1 is 2-3 mm larger than 2 times of the radius of a workpiece processing arc; the inner holes phi D2 and phi D3 are designed according to the inner hexagon screw 1, and the unilateral clearance is ensured to be 0.3-0.5 mm; the depth dimension L19 of the step needs to be designed according to the socket head cap screw 1, and the end face of the socket head cap screw 1 is ensured to be lower than 0.5-1 mm; the thickness dimension L20 of the step is 4-6 mm; the outer circle size phi d1 needs to be matched with the outer circle phi d2 of the positioning seat 7, and the phi d1 is smaller than the phi d2 by 0.3-0.5 mm in double sides.
As shown in fig. 8-9, the pressing plate 4 is selected according to the material and hardness of the workpiece, and the hardness of the pressing plate is required to be slightly lower than that of the workpiece, and the main materials are HT200, HT250, aluminum alloy, copper alloy, steel No. 20, Q235 steel, and the like. The moving space of the device is designed according to the thickness dimension C of the workpiece, and the working distance is 3-6 mm; the dimension L5 is smaller than the dimension L4 of the positioning seat 7 by 0.05-0.1 mm; the L8 is smaller than the L7 size of the positioning seat 7 by 0.05-0.08 mm; l9 is smaller than L10 of the positioning seat 7 by 1-2 mm; l13 needs to ensure that when the pressure plate 4 is not blocked from returning to the limit position and when the pressure plate 4 moves to the limit position and no workpiece is installed, the head of the safety pin 9 is at least 5mm above the hole of the pressure plate 4; the pressing plate 4L11 is 0.5-2 mm; the aperture of each of the 2 phi D9 holes is 0.3-0.5 mm larger than the diameter of the safety pin 9; the concave spherical surface SRb is paired with the ball head SRa of the compression screw 8.
When the machining device is machined, the machining device is installed on machining equipment, an inner hole and an end face are corrected and then fastened, a workpiece is installed in a positioning seat 7 of the machining device, and after the workpiece is installed in place, the pressing plate 4 is driven to move forwards by clockwise rotating the pressing screw 8, so that the workpiece is pressed. Conversely, when the compression screw 8 is rotated counterclockwise, the pressing plate 4 is moved backward, thereby releasing the workpiece. The processing equipment can be electric discharge processing equipment, such as equipment for fast wire moving, medium wire moving, slow wire moving, electric spark and the like; or boring processing equipment, such as a boring machine, a milling machine, a processing center and the like; but also turning equipment such as a numerically controlled lathe.
When the device is used for rapid measurement, the machining device is directly placed on a workbench, after the device is cleaned, a matched workpiece is placed into a positioning seat 7 of the device, and after the device is installed in place, a compression screw 8 is rotated to drive a pressing plate 4 to move forwards, so that the workpiece is compressed for detection. Conversely, when the compression screw 8 is rotated counterclockwise, the pressing plate 4 is driven to move backward, so that the workpiece is loosened.
The device can also be used for processing the tapered slot and the special-shaped slot with the generatrix of any curve, wherein the central line of the similar structural parts is parallel to the positioning plane and is outside the plane; after fine adjustment, if the positioning surface is processed into an inclined surface, the method can be used for processing a chute and a special-shaped chute, wherein the center line of the chute is intersected with the positioning plane and is outside the plane, and the generatrix of the chute is an arbitrary curve; through fine adjustment, if a positioning part is added, the special-shaped groove machining tool can be used for machining a straight groove, a conical groove and a special-shaped groove with a generatrix being any curve on a special-shaped piece of which the center line is parallel to a positioning plane and the plane is outside; after fine adjustment, if the positioning surface is processed into an inclined surface and a positioning component is added, the method can be used for processing the chute of a special-shaped piece of which the center line is intersected with the positioning plane and the outside of the plane and the special-shaped chute of which the generatrix is an arbitrary curve.
Claims (10)
1. The utility model provides a anchor clamps that is used for straight groove of rectangular plate circular arc to process which characterized in that: the device comprises a bottom plate, a positioning seat, a pressing plate, a cylindrical pin, a compression screw, an inner hexagonal plug screw and a return spring, wherein the cylindrical pin is arranged on the bottom plate;
the positioning seat is of an annular hollow structure, four square grooves communicated with the inner cavity are formed in the periphery of the inner wall of the annular wall of the positioning seat, pin holes are formed in the annular wall of the positioning seat, and the positioning seat is fixedly arranged on the bottom plate after cylindrical pins arranged on the bottom plate are inserted into the pin holes for positioning during installation;
the number of the pressing plates is four, the four pressing plates are respectively arranged in a square groove in the annular wall of the positioning seat, a threaded hole is formed in the annular wall of the positioning seat corresponding to the square groove, the inner hexagonal plug screw is arranged in the threaded hole, and the return spring penetrates through the inner hexagonal plug screw and is propped against the pressing plates;
the compression screws penetrate through the positioning seat and are propped against the pressing plates, when the clamping device is used, a workpiece to be processed is placed in the annular wall of the positioning seat, the pressing plates are arranged on the periphery of the annular wall of the positioning seat, the compression screws at the positions of the pressing plates are screwed down to extrude the pressing plates, and the workpiece to be processed is fastened in the four pressing plates.
2. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the safety pin is arranged on the pressing plate, penetrates through the annular wall of the positioning seat and is inserted into the safety pin hole of the pressing plate.
3. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the pressing plate is provided with a concave spherical surface, the head of the pressing screw is spherical, and the pressing screw is pressed against the concave spherical surface arranged on the pressing plate when being screwed down.
4. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the bottom plate is fixedly connected with the positioning seat through the inner hexagon screws through the threaded holes.
5. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the number of the inner hexagonal screw plugs is eight, and two inner hexagonal screw plugs are arranged at each pressure plate along the radial direction of the positioning seat.
6. The jig for processing the arc straight groove of the rectangular plate according to claim 2, wherein: the number of the safety pins is eight, and two safety pins are arranged at each pressure plate along the radial direction of the positioning seat.
7. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 4, wherein: the number of the inner hexagon screws is more than three, and the inner hexagon screws are circumferentially and uniformly distributed along the bottom plate.
8. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the number of the cylindrical pins is two, and the tolerance fit of the cylindrical pins is H7/m 6.
9. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: the hardness of the pressing plate is lower than that of the workpiece to be processed.
10. The jig for processing the arc straight groove of the rectangular plate as set forth in claim 1, wherein: and a root cleaning groove is arranged at the intersection of the square groove and the inner annular wall of the positioning seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911338969.9A CN110977537A (en) | 2019-12-23 | 2019-12-23 | Clamp for processing arc straight groove of rectangular plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911338969.9A CN110977537A (en) | 2019-12-23 | 2019-12-23 | Clamp for processing arc straight groove of rectangular plate |
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| Publication Number | Publication Date |
|---|---|
| CN110977537A true CN110977537A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911338969.9A Pending CN110977537A (en) | 2019-12-23 | 2019-12-23 | Clamp for processing arc straight groove of rectangular plate |
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| CN (1) | CN110977537A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112077542A (en) * | 2020-09-15 | 2020-12-15 | 齐齐哈尔建华机械有限公司 | Machining method for symmetrically splitting thin-wall aluminum cylinder part |
| CN112453954A (en) * | 2020-11-13 | 2021-03-09 | 沈阳航天新光集团有限公司 | Cabin section machining multipurpose tool |
| CN112589485A (en) * | 2020-11-16 | 2021-04-02 | 中国航发西安动力控制科技有限公司 | Method for processing special-shaped sealing ring, and process pressing plate and positioning plate for processing |
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| CN112453954A (en) * | 2020-11-13 | 2021-03-09 | 沈阳航天新光集团有限公司 | Cabin section machining multipurpose tool |
| CN112589485A (en) * | 2020-11-16 | 2021-04-02 | 中国航发西安动力控制科技有限公司 | Method for processing special-shaped sealing ring, and process pressing plate and positioning plate for processing |
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Application publication date: 20200410 |
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