CN219725309U - Variable piston adds clamping apparatus - Google Patents
Variable piston adds clamping apparatus Download PDFInfo
- Publication number
- CN219725309U CN219725309U CN202321184352.8U CN202321184352U CN219725309U CN 219725309 U CN219725309 U CN 219725309U CN 202321184352 U CN202321184352 U CN 202321184352U CN 219725309 U CN219725309 U CN 219725309U
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- China
- Prior art keywords
- variable piston
- plate
- clamping plate
- fixture
- upper clamping
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- 238000003754 machining Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 abstract description 23
- 238000003801 milling Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model discloses a variable piston machining clamp which comprises a bottom plate and a bolt, wherein a first clamping mechanism and a second clamping mechanism are respectively arranged at two ends of the bottom plate, the first clamping mechanism comprises an upper clamping plate and a lower clamping plate which are arranged above and below a variable piston, the first clamping mechanism is used for fixing the variable piston between the upper clamping plate and the lower clamping plate, a positioning plate is also fixed on the bottom plate, one end of the bolt is inserted into a pin hole of the variable piston, the other end of the bolt is arranged above the positioning plate, the bolt is in line contact with the positioning plate, and the structure of the second clamping mechanism is identical with that of the first clamping mechanism. Compared with the prior art, the positioning plate is matched in a bolt jack mode, the position of the variable piston is well determined, and then two ends of the variable piston are respectively fixed on the two lower clamping plates through the two hinged upper clamping plates, so that the accuracy of the groove milling position of the follow-up variable piston is ensured. The whole structure is simple, the positioning and fixing procedures of the variable piston are few, and the operation is easy.
Description
Technical Field
The utility model relates to the technical field of variable piston machining, in particular to a variable piston machining clamp.
Background
The variable piston is an important spare part in the variable pump, both ends of the variable piston are cylindrical, a groove needs to be milled in the middle section, the variable piston needs to be fixed on a clamp before the groove is milled, and then the clamp is fixed on a machine tool. The patent application with publication number CN104889768A discloses a clamp for milling grooves of piston rods, and an adjusting groove is formed in the middle of an upper clamping plate, so that the clamp is suitable for piston rods with different sizes; through fixing the lower clamping block in the chute of the milling machine workbench through the second bolt, the whole clamp is more stable. However, as the two ends of the variable piston are cylindrical, the variable piston can freely rotate between the upper clamping plate and the lower clamping plate, and the problem of inaccurate positioning exists before fixing.
Disclosure of Invention
First, the technical problem to be solved
Based on the above, the utility model provides a variable piston machining clamp which is used for solving the problem of inaccurate positioning caused by lack of a positioning means before the variable piston is fixed by the existing clamp.
(II) technical scheme
The utility model aims to overcome the problems or at least partially solve the problems, and provides a variable piston machining clamp which comprises a bottom plate and a bolt, wherein a first clamping mechanism and a second clamping mechanism are respectively arranged at two ends of the bottom plate, the first clamping mechanism comprises an upper clamping plate and a lower clamping plate which are arranged above and below a variable piston, the first clamping mechanism is used for fixing the variable piston between the upper clamping plate and the lower clamping plate, a positioning plate is also fixed on the bottom plate, one end of the bolt is inserted into a pin hole of the variable piston, the other end of the bolt is arranged above the positioning plate, the bolt is in line contact with the positioning plate, and the structure of the second clamping mechanism is identical with that of the first clamping mechanism.
Preferably, a first limit groove is formed at the lower end of the upper clamping plate, and the variable piston is located between the first limit groove and the lower clamping plate.
Preferably, two vertical rods are fixed on the bottom plate, one end of the upper clamping plate is hinged with one vertical rod, and the other end of the upper clamping plate is fixed with the other vertical rod.
Preferably, the tip of punch holder is opened has the groove of dodging with montant looks adaptation, threaded connection has fastening nut on the montant, fastening nut is located the top of punch holder.
Preferably, the vertical rod is provided with a cylindrical pin, the cylindrical pin penetrates through the upper clamping plate, the upper clamping plate is connected with a locking screw in a threaded manner, and the locking screw is abutted to the cylindrical pin.
Preferably, a second limit groove is formed at the upper end of the lower clamping plate, and the variable piston is located between the first limit groove and the second limit groove.
Preferably, the lower clamping plate is provided with a positioning pin, the positioning pin stretches into the bottom plate, and the lower clamping plate is fixed with the bottom plate through a bolt.
Preferably, the second limiting groove is in a V-shaped structure.
Preferably, the lower end of the vertical rod is in threaded connection with the bottom plate, and the lower end of the vertical rod is in threaded connection with a locking nut.
Preferably, the positioning plate is fixed on the bottom plate through bolts.
(III) beneficial effects
The variable piston machining clamp has the following advantages:
according to the utility model, the positioning plate is matched in a bolt jack mode, the position of the variable piston is well determined, and then two ends of the variable piston are respectively fixed on the two lower clamping plates through the two hinged upper clamping plates, so that the accuracy of the groove milling position of the follow-up variable piston is ensured. The utility model has simple integral structure, less positioning and fixing procedures of the variable piston and easy operation.
Drawings
The features and advantages of the present utility model will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the utility model in any way, in which:
FIG. 1 is a schematic cross-sectional view of the present utility model from a top view;
FIG. 2 is a schematic cross-sectional view of the utility model at a front view angle;
FIG. 3 is a schematic cross-sectional view at left-hand angle of the present utility model;
FIG. 4 is a front view of the upper clamping plate of the present utility model;
FIG. 5 is a top view of the upper clamping plate of the present utility model;
FIG. 6 is a schematic view of a lower clamping plate according to the present utility model;
fig. 7 is a schematic view of another lower clamping plate according to the present utility model.
Reference numerals illustrate:
1. the hydraulic clamping device comprises a bottom plate, a bolt, a first clamping mechanism, a second clamping mechanism, a variable piston, a positioning plate, a upper clamping plate, a lower clamping plate, a first limiting groove, a vertical rod, a avoiding groove, a fastening nut, a cylindrical pin, a locking screw, a second limiting groove, a positioning pin, a locking nut, a first groove and a pin hole.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, electrical connection, direct connection, indirect connection through an intermediate medium, communication between two elements, or "transmission connection", i.e. power connection by various suitable means such as belt transmission, gear transmission or sprocket transmission. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, this embodiment provides a variable piston machining fixture, including a base plate 1 and a pin 2, wherein two ends of the base plate 1 are respectively provided with a first clamping mechanism 3 and a second clamping mechanism 4, the first clamping mechanism 3 includes an upper clamping plate 31 and a lower clamping plate 32 disposed above and below a variable piston 5, the first clamping mechanism 3 is used for fixing the variable piston 5 between the upper clamping plate 31 and the lower clamping plate 32, a positioning plate 6 is also fixed on the base plate 1, one end of the pin 2 is inserted into a pin hole 52 of the variable piston 5, the other end is disposed above the positioning plate 6, the pin 2 is in line contact with the positioning plate 6, and a rotation angle of the variable piston 5 is determined through the line contact, so as to determine a milling slot position (the first groove 51 is set as a milling slot position of the variable piston 5); the structure of the second clamping mechanism 4 is identical to that of the first clamping mechanism 3. Two ends of the variable piston 5 are respectively fixed through two clamping mechanisms, and then the variable piston 5 is positioned on the positioning plate 6 through the bolt 2, so that the position of the variable piston 5 on the clamp is positioned accurately, and the subsequent milling of grooves is facilitated.
As another embodiment of the present utility model: referring to fig. 4, a first limiting groove 311 is formed at the lower end of the upper clamping plate 31, the variable piston 5 is located between the first limiting groove 311 and the lower clamping plate 32, the upper clamping plate 31 includes two splayed inclined plates, a flat plate is fixed between the two inclined plates, the flat plate and the two inclined plates form the first limiting groove 311, and the flat plate is in contact with the variable piston 5.
As another embodiment of the present utility model: two vertical rods 33 are fixed on the bottom plate 1, one end of the upper clamping plate 31 is hinged with one vertical rod 33, and the other end is fixed with the other vertical rod 33. Specifically, one vertical rod 33 is a locking shaft screw rod, the other vertical rod 33 is a hinge fork seat screw rod, one end of the upper clamping plate 31 is hinged with the hinge fork seat screw rod, and the other end of the upper clamping plate is fixed with the locking shaft screw rod.
One embodiment of the upper clamp plate 31 secured to the locking shaft screw: referring to fig. 5, the end of the upper clamping plate 31 is provided with a avoiding groove 312 adapted to a locking shaft screw, the locking shaft screw is connected with a fastening nut 34 in a threaded manner, the fastening nut 34 is located above the upper clamping plate 31, and specifically, the fastening nut 34 is a hexagonal flange surface nut.
One embodiment of the upper clamp plate 31 being screw hinged to the hinge fork: the hinge fork seat screw rod is provided with a cylindrical pin 35, the cylindrical pin 35 penetrates through the upper clamping plate 31, the upper clamping plate 31 is connected with a locking screw 36 in a threaded mode, and the locking screw 36 is abutted with the cylindrical pin 35. During installation, the cylindrical pin 35 penetrates through the hinge fork seat screw rod and the upper clamping plate 31, then the cylindrical pin 35 is fixed on the upper clamping plate 31 through the locking screw 36, and the cylindrical pin 35 is rotationally connected with the hinge fork seat screw rod.
As another embodiment of the present utility model: referring to fig. 6 to 7, a second limiting groove 321 is formed at the upper end of the lower clamping plate 32, the variable piston 5 is located between the first limiting groove 311 and the second limiting groove 321, specifically, the second limiting groove 321 is in a V-shaped structure, and the variable piston 5 can be better fixed between the upper clamping plate 31 and the lower clamping plate 32 through the limiting of the two limiting grooves.
As another embodiment of the present utility model: the lower clamping plate 32 is provided with a positioning pin 37, the positioning pin 37 stretches into the bottom plate 1 to be positioned, and the lower clamping plate 32 is fixed with the bottom plate 1 through bolts. Specifically, the two positioning pins 37 are respectively located at two ends of the lower clamping plate 32, and the bolts on the lower clamping plate 32 pass through the lower clamping plate 32 from the bottom of the second limiting groove 321 to be in threaded connection with the bottom plate 1.
As another embodiment of the present utility model: the lower extreme and the bottom plate 1 threaded connection of montant 33, the lower extreme threaded connection of montant 33 has lock nut 38, and lock nut 38 is used for locking montant 33 on bottom plate 1, dodges the width that the groove 312 is greater than the diameter of montant 33 to splint 31 can swing and carry out the fine setting of height. Specific mode of height adjustment: the vertical bar 33 is rotated to adjust the height of the vertical bar 33, thereby adjusting the horizontal position of the upper clamping plate 31, which is mainly designed to solve the machining error, and the stroke required to be adjusted is short because the machining error is small.
Specifically, the positioning plate 6 is fixed to the base plate 1 by bolts.
In the utility model, two ends of the variable piston 5 are respectively placed on the second limiting grooves 321, then the bolt 2 is inserted into the pin hole 52 of the variable piston 5, and then the variable piston 5 is rotated, so that the bolt 2 is in line contact with the positioning plate 6. After the line contact is determined, the avoiding groove 312 of the upper clamping plate 31 passes through the vertical rod 33, the upper clamping plate 31 presses the variable piston 5 on the lower clamping plate 32, then the upper clamping plate 31 is fixed on the vertical rod 33 through the fastening nut 34, and the other upper clamping plate 31 is pressed on the variable piston 5 until the two ends of the variable piston 5 are respectively fixed by the first clamping mechanism 3 and the second clamping mechanism 4. According to the utility model, the positioning plate 6 is matched in a plug pin 2 jack mode, the position of the variable piston 5 is well determined, and then two ends of the variable piston 5 are respectively fixed on the two lower clamping plates 32 through the two hinged upper clamping plates 31, so that the slot milling position of the follow-up variable piston 5 is ensured to be accurate. The utility model has simple integral structure, less positioning and fixing procedures of the variable piston 5 and easy operation.
Finally, the method of the present utility model is only a preferred embodiment and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.
Claims (10)
1. The utility model provides a variable piston adds clamping apparatus, its characterized in that, includes bottom plate and bolt, the both ends of bottom plate are equipped with first fixture and second fixture respectively, first fixture is including setting up upper plate and the lower plate in the top and the below of variable piston, first fixture is used for fixing the variable piston between upper plate and lower plate, still be fixed with the locating plate on the bottom plate, the one end of bolt is inserted and is located in the pinhole of variable piston, and the top of locating plate is located to the other end, be line contact between bolt and the locating plate, second fixture's structure is the same with first fixture's structure.
2. The variable piston machining fixture of claim 1, wherein the lower end of the upper clamping plate is formed with a first limit groove, and the variable piston is located between the first limit groove and the lower clamping plate.
3. The variable piston machining fixture according to claim 2, wherein two vertical rods are fixed on the bottom plate, one end of the upper clamping plate is hinged with one vertical rod, and the other end of the upper clamping plate is fixed with the other vertical rod.
4. The variable piston machining clamp according to claim 3, wherein the end part of the upper clamping plate is provided with an avoidance groove matched with the vertical rod, the vertical rod is connected with a fastening nut in a threaded manner, and the fastening nut is located above the upper clamping plate.
5. The variable piston machining fixture of claim 4, wherein the vertical rod is provided with a cylindrical pin, the cylindrical pin penetrates through an upper clamping plate, a locking screw is connected to the upper clamping plate in a threaded manner, and the locking screw is abutted with the cylindrical pin.
6. The variable piston machining fixture of claim 2, wherein the upper end of the lower clamping plate is formed with a second limit groove, and the variable piston is located between the first limit groove and the second limit groove.
7. The variable piston machining fixture of claim 6, wherein the lower clamping plate is provided with a locating pin, the locating pin extends into the bottom plate, and the lower clamping plate is fixed with the bottom plate through a bolt.
8. The variable piston machining fixture of claim 7, wherein the second limiting groove is of a V-shaped configuration.
9. The variable piston machining fixture of claim 5, wherein the lower end of the vertical rod is in threaded connection with the bottom plate, and the lower end of the vertical rod is in threaded connection with a lock nut.
10. The variable piston machining fixture of claim 1, wherein the locating plate is bolted to the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321184352.8U CN219725309U (en) | 2023-05-17 | 2023-05-17 | Variable piston adds clamping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321184352.8U CN219725309U (en) | 2023-05-17 | 2023-05-17 | Variable piston adds clamping apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219725309U true CN219725309U (en) | 2023-09-22 |
Family
ID=88061302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321184352.8U Active CN219725309U (en) | 2023-05-17 | 2023-05-17 | Variable piston adds clamping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219725309U (en) |
-
2023
- 2023-05-17 CN CN202321184352.8U patent/CN219725309U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |