CN111791164B - Clamp for machining top cover of inverter - Google Patents
Clamp for machining top cover of inverter Download PDFInfo
- Publication number
- CN111791164B CN111791164B CN202010841049.5A CN202010841049A CN111791164B CN 111791164 B CN111791164 B CN 111791164B CN 202010841049 A CN202010841049 A CN 202010841049A CN 111791164 B CN111791164 B CN 111791164B
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- CN
- China
- Prior art keywords
- pin
- bottom plate
- plate
- hole
- strip
- 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.)
- Active
Links
- 238000003754 machining Methods 0.000 title claims description 6
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The fixture for processing the top cover of the inverter comprises a bottom plate, wherein a plurality of table nails for supporting a workpiece are arranged on the bottom plate, one side of each table nail is correspondingly provided with a pressing mechanism, and a plurality of positioning mechanisms are arranged on the bottom plate; the pressing mechanism comprises an air cylinder arranged on the base, a pressing plate connected with the top end of a piston rod of the air cylinder and a hinged plate hinged to the middle part of the pressing plate and the bottom plate respectively, wherein the top end of the piston rod of the air cylinder is connected with the rear end of the pressing plate and can push the pressing plate upwards so that the front end of the pressing plate presses a workpiece on a corresponding table nail. The invention can avoid the displacement caused by the driving of the elastic ejector pin to a great extent when the elastic ejector pin is fixed, and ensure the positioning accuracy.
Description
Technical Field
The invention relates to the technical field of tool clamps, in particular to a clamp for machining an inverter top cover.
Background
In the production and processing process of the vehicle-mounted inverter, parts such as a shell and a top cover of the vehicle-mounted inverter are required to be processed, the existing processing method is to clamp a workpiece by using a set of clamp, then process the surface and the hole of the workpiece, and in order to clamp the top cover of the inverter, an elastic ejector pin is required to be used at the bottom of the workpiece besides a clamping mechanism, so that the auxiliary positioning and supporting functions are realized.
Generally speaking, after a positioning hole at the bottom of a workpiece is placed on an elastic ejector pin (meanwhile, the bottom of the workpiece is also put on other table nails), the elastic ejector pin needs to be fixed, and a common fixing mode is that a bolt is arranged on the side edge of the elastic ejector pin, one end of the bolt is abutted against the side surface of the elastic ejector pin by rotating the bolt, however, in the process of rotating the bolt, the bolt rotates and contacts with the elastic ejector pin, so that a certain torsion type sliding friction force is generated on the elastic ejector pin, the elastic ejector pin is driven to a certain extent, the elastic ejector pin is enabled to displace along the axial direction of the elastic ejector pin, and finally, the problem of inaccurate positioning is caused.
Disclosure of Invention
The invention aims to provide a clamp for processing an inverter top cover, which can prevent the elastic ejector pin from being driven to generate displacement to a great extent when the elastic ejector pin is fixed, and ensure the positioning accuracy.
In order to solve the technical problems, the invention adopts the following technical scheme: the clamp for processing the top cover of the inverter comprises a bottom plate, wherein a plurality of table nails for supporting a workpiece are arranged on the bottom plate, one side of each table nail is correspondingly provided with a pressing mechanism, and a plurality of positioning mechanisms are arranged on the bottom plate; the pressing mechanism comprises an air cylinder arranged on the bottom plate, a pressing plate connected with the top end of a piston rod of the air cylinder and a hinged plate respectively hinged to the middle part of the pressing plate and the bottom plate, wherein the top end of the piston rod of the air cylinder is connected with the rear end of the pressing plate and can push the pressing plate upwards so that the front end of the pressing plate presses a workpiece on a corresponding table nail; the positioning mechanism comprises a plurality of pin seats arranged on a bottom plate, each pin seat is provided with an elastic ejector pin for propping up against a positioning hole at the bottom of a workpiece, the top end of each pin seat is provided with a pin hole downwards, the bottom end of each elastic ejector pin is inserted into the pin hole, the side surface of the bottom end of each elastic ejector pin is provided with a limiting block, the inner wall of the pin hole above each limiting block is provided with a limiting step for blocking the limiting block, each pin hole is internally provided with a compression spring, the upper end and the lower end of each compression spring respectively prop against the bottom end of each elastic ejector pin and the bottom end of each pin hole, the side surface of each elastic ejector pin is provided with a strip-shaped groove along the axial direction, the threaded through holes between the strip-shaped grooves and the bolts are also provided with a movable ejector pin, the side surfaces of the movable ejector pins are axially provided with strip-shaped sliding blocks along the inner walls of the threaded through holes, the inner walls of the movable ejector pins are axially correspondingly provided with strip-shaped sliding ways for blocking the strip-shaped sliding blocks, the strip-shaped sliding blocks can move along the sliding ways, and rotate the bolt can enable one ends of the movable ejector pins to prop against one ends of the movable ejector pins to stretch into the strip-shaped grooves along the movable grooves.
Preferably, the outer wall surface of the movable ejector pin is a smooth surface.
More preferably, the length of the strip-shaped groove is smaller than the length of the elastic knock pin.
More preferably, the bottom plate is provided with a supporting member, and the bottom end of the hinge plate is hinged to the supporting member.
More preferably, the pin bosses are detachably connected to the base plate.
The working principle of the invention is as follows: when the workpiece is placed on the fixture, firstly the elastic ejector pins can be ejected into the positioning holes at the bottom of the workpiece, meanwhile the workpiece can be placed on each bench nail, then the bolts can be pushed against the movable ejector pins by rotating the bolts, the movable ejector pins extend into the strip-shaped grooves to tightly support the elastic ejector pins in the pin holes, so that the elastic ejector pins are kept stable, then each pressing mechanism presses the workpiece on the corresponding bench nail, and then the clamping work of the workpiece can be completed. In the process, the bolt is not directly contacted with the elastic ejector pin, but the movable ejector pin is used as a middle piece, and the movable ejector pin can not rotate by itself, so that the elastic ejector pin can not be subjected to sliding friction force in a torsion form, the elastic ejector pin can be prevented from being driven to displace to a great extent, and the positioning accuracy is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a positioning mechanism according to an embodiment;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;
Fig. 4 is a schematic structural view of the movable knock pin in the embodiment.
The reference numerals are:
1-bottom plate 2-workpiece 3-table nail
4 A-cylinder 4 b-pressing plate 4 c-hinged plate
4 D-support 5-pin base 6-elastic top pin
6 A-limiting block 6 b-strip-shaped groove 7-compression spring
8-Bolt 9-movable top pin 9 a-bar-shaped slider
9 B-a strip slideway.
Detailed Description
The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention.
It should be noted in advance that, in the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1-4, the clamp for processing the top cover of the inverter comprises a bottom plate 1, wherein a plurality of table nails 3 for supporting a workpiece 2 are arranged on the bottom plate 1, one side of each table nail 3 is correspondingly provided with a pressing mechanism, and a plurality of positioning mechanisms are arranged on the bottom plate 1; the pressing mechanism comprises an air cylinder 4a arranged on the bottom plate 1, a pressing plate 4b connected with the top end of a piston rod of the air cylinder 4a and a hinged plate 4c respectively hinged to the middle part of the pressing plate 4b and the bottom plate 1, wherein the top end of the piston rod of the air cylinder 4a is connected with the rear end of the pressing plate 4b and can press the workpiece 2 on the corresponding bench nail 3 by pushing the pressing plate 4b upwards; the positioning mechanism comprises a plurality of pin bosses 5 arranged on a bottom plate 1, each pin boss 5 is provided with an elastic jacking pin 6 for propping up against a positioning hole at the bottom of a workpiece 2, the top end of each pin boss 5 is provided with a pin hole downwards, the bottom end of each elastic jacking pin 6 is inserted into the pin hole, the side surface of the bottom end of each elastic jacking pin is provided with a limiting block 6a, the inner wall of the pin hole above each limiting block 6a is provided with a limiting step for blocking each limiting block 6a, each pin hole is internally provided with a compression spring 7, the upper end and the lower end of each compression spring 7 respectively prop against the bottom end of each elastic jacking pin 6 and the bottom end of the corresponding pin hole, the side surface of each elastic jacking pin 6 is provided with a strip-shaped groove 6b along the axial direction, the pin seat 5 is provided with a threaded through hole communicated with the strip-shaped groove 6b along the radial direction, the threaded through hole is connected with a bolt 8, the side surface of each movable jacking pin 9 is axially provided with a strip-shaped sliding block 9a, the inner wall of the threaded through hole is axially provided with a sliding block 9a correspondingly provided with a sliding way 9b for blocking the limiting the sliding block 9a along the axial direction, the sliding block 9a can move along the axial direction of the sliding block 9b, and one end of the strip-shaped sliding block 9 can prop up against one end of the bolt 8 by pushing the movable jacking pin 9 b.
When the fixture for processing the top cover of the inverter provided by the embodiment is used, a workpiece is placed on the fixture, firstly, the elastic ejector pins 6 can be ejected into the positioning holes at the bottom of the workpiece 2, meanwhile, the workpiece 2 can be placed on each table nail 3, then, the bolts 8 can be pushed against the movable ejector pins 9 by rotating the bolts 8, the movable ejector pins 9 extend into the strip-shaped grooves 6b to tightly support the elastic ejector pins 6 in the pin holes, the elastic ejector pins 6 are kept stable, and then, each pressing mechanism is used for pressing the workpiece 2 on the corresponding table nail 3, so that the clamping work of the workpiece 2 can be completed. In the process, the bolt 8 is not directly contacted with the elastic ejector pin 6, but the movable ejector pin 9 is used as a middle piece, and the movable ejector pin 9 cannot rotate by itself, so that a torsion type sliding friction force cannot be generated on the elastic ejector pin 6, the elastic ejector pin 6 can be prevented from being driven to displace to a great extent, and the positioning accuracy is ensured.
Preferably, the outer wall surface of the movable knock pin 9 is a smooth surface to reduce friction between the movable knock pin and the inner wall of the threaded through hole, so that the movable knock pin can move more smoothly.
More preferably, the length of the bar-shaped groove 6b is smaller than the length of the elastic knock pin 6, and the depth of the bar-shaped groove 6b is smaller than half the length of the movable knock pin 9, so that when the movable knock pin 9 abuts against the bottom of the bar-shaped groove 6b, a large portion of the movable knock pin 9 itself remains in the threaded through hole, so that the movable knock pin 9 can be more stable.
More preferably, the base plate 1 is provided with a supporting member 4d, and the bottom end of the hinge plate 4c is hinged to the supporting member 4d.
In addition, in the present embodiment, the pin base 5 is detachably connected to the base plate 1, so as to facilitate subsequent easy disassembly and assembly of the pin base 5 for maintenance or replacement.
The foregoing embodiments are preferred embodiments of the present invention, and in addition, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
In order to facilitate understanding of the improvements of the present application over the prior art, some of the figures and descriptions of the present application have been simplified and some other elements have been omitted for clarity, as will be appreciated by those of ordinary skill in the art.
Claims (5)
1. Inverter top cap adds clamping apparatus for processing, including bottom plate (1), its characterized in that: a plurality of table nails (3) for supporting the workpiece (2) are arranged on the bottom plate (1), one side of each table nail (3) is correspondingly provided with a pressing mechanism, and a plurality of positioning mechanisms are arranged on the bottom plate (1);
The pressing mechanism comprises an air cylinder (4 a) arranged on the bottom plate (1), a pressing plate (4 b) connected with the top end of a piston rod of the air cylinder (4 a) and a hinged plate (4 c) respectively hinged to the middle part of the pressing plate (4 b) and the bottom plate (1), wherein the top end of the piston rod of the air cylinder (4 a) is connected with the rear end of the pressing plate (4 b) and can press the front end of the pressing plate (4 b) on a corresponding table nail (3) by pushing the pressing plate (4 b) upwards;
The positioning mechanism comprises a plurality of pin seats (5) arranged on a bottom plate (1), each pin seat (5) is provided with an elastic jacking pin (6) for propping up against a positioning hole at the bottom of a workpiece (2), the top end of each pin seat (5) is provided with a pin hole downwards, the bottom end of each elastic jacking pin (6) is inserted into the pin hole, the side surface of the bottom end of each elastic jacking pin is provided with a limiting block (6 a), the inner wall of the pin hole above each limiting block (6 a) is provided with a limiting step for blocking the corresponding limiting block (6 a), the pin hole is internally provided with a compression spring (7), the upper end and the lower end of each compression spring (7) respectively prop against the bottom end of each elastic jacking pin (6) and the bottom end of the corresponding pin hole, the side surface of each elastic jacking pin (6) is provided with a strip-shaped groove (6 b) along the axial direction, the side surface of each pin seat (5) is provided with a threaded through hole for connecting the strip-shaped groove (6 b) along the radial direction, the threaded through hole is connected with a bolt (8), the threaded through hole between the strip-shaped groove (6 b) and the bolt (8) is also provided with a limiting step for blocking the limiting block (6 a) on the inner wall of the pin hole above the limiting block (6 a), the upper end and the lower end of the elastic jacking pin (9) of the elastic jacking pin) is provided with a slide block (9) along the axial direction, the strip-shaped slide way, the sliding way (9 b) and the sliding way along the axial direction of the sliding way, one end of the rod part of the bolt (8) can be pushed against the movable jacking pin (9), so that one end of the movable jacking pin (9) stretches into the strip-shaped groove (6 b) and abuts against the elastic jacking pin (6).
2. The inverter cover machining jig according to claim 1, wherein: the outer wall surface of the movable ejector pin (9) is a smooth surface.
3. The inverter cover processing jig according to claim 2, wherein: the length of the strip-shaped groove (6 b) is smaller than that of the elastic ejector pin (6).
4. The inverter cover machining jig according to claim 3, wherein: the bottom plate (1) is provided with a supporting piece (4 d), and the bottom end of the hinged plate (4 c) is hinged to the supporting piece (4 d).
5. The inverter cover machining jig according to claim 4, wherein: the pin seat (5) is detachably connected with the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841049.5A CN111791164B (en) | 2020-08-20 | 2020-08-20 | Clamp for machining top cover of inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841049.5A CN111791164B (en) | 2020-08-20 | 2020-08-20 | Clamp for machining top cover of inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111791164A CN111791164A (en) | 2020-10-20 |
| CN111791164B true CN111791164B (en) | 2024-04-26 |
Family
ID=72833795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010841049.5A Active CN111791164B (en) | 2020-08-20 | 2020-08-20 | Clamp for machining top cover of inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111791164B (en) |
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| CN107160309A (en) * | 2017-07-07 | 2017-09-15 | 苏州华徕光电仪器有限公司 | A kind of clamping structure |
| CN207283419U (en) * | 2017-09-20 | 2018-04-27 | 昆山鸿图电子有限公司 | Clamp-type inverter |
| CN207508714U (en) * | 2017-11-02 | 2018-06-19 | 内蒙古北方重工业集团有限公司 | The element floating support device adjusted with wedge mechanism |
| CN209223615U (en) * | 2018-11-06 | 2019-08-09 | 湖南省嘉力机械有限公司 | A kind of oil pump drive end bearing bracket fixture |
| CN210550567U (en) * | 2019-06-03 | 2020-05-19 | 宝鸡法士特齿轮有限责任公司 | Anchor clamps prevent interfering floating support device |
| CN210081222U (en) * | 2019-06-17 | 2020-02-18 | 湖南省嘉力机械有限公司 | Controller case anchor clamps |
| CN210081224U (en) * | 2019-06-17 | 2020-02-18 | 湖南省嘉力机械有限公司 | Ignition lock seat clamp |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111791164A (en) | 2020-10-20 |
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