CN220880845U - Z-axis thermal elongation compensation connection structure of spark machine - Google Patents
Z-axis thermal elongation compensation connection structure of spark machine Download PDFInfo
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- CN220880845U CN220880845U CN202322423687.7U CN202322423687U CN220880845U CN 220880845 U CN220880845 U CN 220880845U CN 202322423687 U CN202322423687 U CN 202322423687U CN 220880845 U CN220880845 U CN 220880845U
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- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 6
- 238000010892 electric spark Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model relates to a Z-axis thermal elongation compensation connection structure of a spark machine, which comprises a rack, wherein the rack comprises a first rack which is arranged in a sliding way along the Y-axis direction and a second rack which is fixedly connected to the first rack, and a first screw rod which rotates around the Z-axis direction is arranged in the second rack; the lower end of the first screw rod is rotatably abutted on the second frame, and the upper end of the first screw rod is telescopically rotated on the second frame; the main shaft slides along the Z-axis direction and is arranged on the second frame, a screw rod nut is connected to the first screw rod in a screwed mode, and the screw rod nut is fixed at the upper end portion of the main shaft. According to the utility model, the bottom of the first screw rod is abutted on the second frame, the upper end of the first screw rod is connected and slidingly arranged in the shaft hole of the second frame, the upper end of the main shaft is fixedly connected with the screw rod nut, when the temperature rises, the main shaft is thermally elongated downwards, the upper end of the first screw rod is thermally elongated, and the elongation directions of the first screw rod and the upper end are opposite, so that the thermal elongation of the discharge electrode at the lower end of the main shaft can be counteracted, and the machining error in the Z-axis direction is reduced.
Description
Technical Field
The application belongs to the technical field of spark machines, and particularly relates to a Z-axis thermal elongation compensation connecting structure of a spark machine.
Background
The spark machine is mainly used for electric spark machining. The method is widely applied to the manufacture of various metal molds and mechanical equipment. The electric spark machine is a special processing method for removing conductive material by utilizing the electric erosion effect generated by pulse discharge between two electrodes immersed in the working fluid, and is also called electric discharge processing or electric erosion processing. The Z-axis (main shaft) driving screw rod of the existing spark machine often adopts a connecting mode that the upper end part is rotatable and is abutted, the temperature can rise during processing, the screw rod and the main shaft are required to be thermally elongated, the screw rod can be thermally elongated downwards due to the connecting structure that the upper end is abutted, the thermal elongation of the main shaft can be downwards, the thermal elongation of the main shaft is overlapped, the downward elongation amplitude of the lower end part of the main shaft is increased, and the Z-axis direction processing precision is influenced.
Disclosure of utility model
The utility model aims to solve the technical problems that: in order to solve the defects in the prior art, the Z-axis thermal extension compensation connecting structure of the spark machine is provided, and aims to reduce the influence of thermal extension on a main shaft (Z axis) and reduce the machining precision error in the Z axis direction by changing the connecting structure of the Z axis.
The technical scheme adopted for solving the technical problems is as follows:
A spark machine Z-axis thermal elongation compensation connection comprising:
The machine frame comprises a first machine frame which is arranged in a sliding manner along the Y-axis direction and a second machine frame which is fixedly connected to the first machine frame, and a first screw rod which rotates around the Z-axis direction is arranged in the second machine frame;
The lower end of the first screw rod is rotatably abutted on the second frame, and the upper end of the first screw rod is telescopically rotated on the second frame;
The main shaft is arranged on the second frame in a sliding mode along the Z-axis direction, a screw rod nut is connected to the first screw rod in a screwed mode, and the screw rod nut is fixed to the upper end portion of the main shaft.
Preferably, according to the Z-axis thermal elongation compensation connecting structure of the spark machine, the upper end of the second rack is fixedly provided with the driving motor, and a coupling for connection is arranged between a power output shaft of the driving motor and the first screw rod.
Preferably, the Z-axis thermal elongation compensation connecting structure of the spark machine adopts an axial floating type coupler.
Preferably, according to the Z-axis thermal elongation compensation connecting structure of the spark machine, the upper end of the first screw rod is connected with the first bearing, and the outer ring of the first bearing is axially and slidably arranged in the shaft hole of the second frame.
Preferably, in the Z-axis thermal elongation compensation connecting structure of the spark machine, a first guide rail sliding block mechanism for sliding and guiding a main shaft is arranged on the second rack.
Preferably, in the Z-axis thermal elongation compensation connection structure of the spark machine, a second guide rail sliding block mechanism is arranged at the lower end of the first rack, and the first rack is arranged on the spark machine in a sliding manner along the Y-axis direction through the second guide rail sliding block mechanism.
Preferably, in the Z-axis thermal elongation compensation connecting structure of the spark machine, the first frame is provided with a second driving device for driving the first frame to slide along the Y-axis direction.
The beneficial effects of the utility model are as follows:
According to the utility model, the bottom of the first screw rod is abutted on the second frame, the upper end of the first screw rod is connected and slidingly arranged in the shaft hole of the second frame, the upper end of the main shaft is fixedly connected with the screw rod nut, when the temperature rises, the main shaft is thermally elongated downwards, the upper end of the first screw rod is thermally elongated, and the elongation directions of the first screw rod and the upper end are opposite, so that the thermal elongation of the discharge electrode at the lower end of the main shaft can be counteracted, and the machining error in the Z-axis direction is reduced.
Drawings
The technical scheme of the application is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a schematic three-dimensional structure of an embodiment of the present application;
FIG. 2 is a schematic top view of an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;
the reference numerals in the figures are:
A first frame 11;
a second frame 12;
a first screw 13;
A lead screw nut 14;
a drive motor 15;
a coupling 16;
A first rail-slider mechanism 17;
A second rail-slider mechanism 18;
a first bearing 19;
A main shaft 20.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically 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 application can be understood by those of ordinary skill in the art in a specific case.
The technical scheme of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments.
Examples
The present embodiment provides a Z-axis thermal elongation compensation connection structure of a spark machine, referring to fig. 1 to 3, including:
the machine frame comprises a first machine frame 11 and a second machine frame 12, wherein the first machine frame 11 is arranged in a sliding mode along the Y-axis direction, the second machine frame 12 is fixedly connected to the first machine frame 11, the second machine frame 12 is arranged along the Z-axis direction, a first screw rod 13 rotating around the Z-axis direction is arranged in the second machine frame 12, the lower end of the first screw rod 13 is rotatably abutted to the second machine frame 12, and the upper end of the first screw rod 13 is telescopically rotated on the second machine frame 12.
Preferably, in the Z-axis thermal elongation compensation connection structure of the spark machine according to this embodiment, a driving motor 15 is fixedly disposed at the upper end of the second frame 12, a coupling 16 for connection is disposed between a power output shaft of the driving motor 15 and the first screw rod 13, the coupling 16 is an axial floating coupling, the upper end of the first screw rod 13 is connected with a first bearing 19, and an outer ring of the first bearing 19 is axially slidably disposed in a shaft hole of the second frame 12.
In actual use, when the temperature rises, the first screw rod 13 is heated to generate a thermal elongation phenomenon, and as the bottom of the first screw rod 13 is abutted on the second frame 12, the first screw rod 13 can only push the first bearing 19 to extend towards the upper end.
The spark machine Z-axis thermal elongation compensation connection structure of this embodiment further includes a main shaft 20, the main shaft 20 is slidably disposed on the second frame 12 along the Z-axis direction, the first screw rod 13 is screwed with a screw rod nut 14, the screw rod nut 14 is fixed at the upper end of the main shaft 20, and the second frame 12 is provided with a first guide rail slider mechanism 17 for slidably guiding the main shaft 20.
In actual use, when the temperature rises, the main shaft 20 is heated and stretched, as the upper end of the main shaft 20 is fixedly connected with the screw nut 14, the main shaft 20 is stretched downwards, and the first screw rod 13 is stretched towards the upper end, and the stretching directions of the two are opposite, so that the thermal stretching of the discharge electrode at the lower end of the main shaft 20 can be counteracted, and the machining error in the Z-axis direction is reduced.
Preferably, in the Z-axis thermal elongation compensation connection structure of the spark machine according to this embodiment, the second guide rail slider mechanism 18 is disposed at the lower end of the first frame 11, the first frame 11 is slidably disposed on the spark machine along the Y-axis direction through the second guide rail slider mechanism 18, the first frame 11 is provided with a second driving device for driving the first frame 11 to slide along the Y-axis direction, the second driving device includes a second lead screw nut mechanism, the second lead screw nut mechanism is mounted on the frame of the spark machine, a lead screw of the second lead screw nut mechanism is connected with a power output shaft of a motor, a lead screw nut of the second lead screw nut mechanism is fixedly connected with the first frame 11, and when in operation, the motor drives the second lead screw nut mechanism to act, and drives the spindle 20 to slide along the Y-axis direction to perform electric discharge machining on a workpiece.
With the above-described preferred embodiments according to the present application as a teaching, the worker skilled in the art could make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.
Claims (7)
1. A spark machine Z-axis thermal elongation compensation connection structure, comprising:
The machine frame comprises a first machine frame (11) which is arranged in a sliding manner along the Y-axis direction and a second machine frame (12) which is fixedly connected to the first machine frame (11), wherein a first screw rod (13) which rotates around the Z-axis direction is arranged in the second machine frame (12);
The lower end of the first screw rod (13) is rotatably abutted on the second frame (12), and the upper end of the first screw rod (13) is telescopically rotated on the second frame (12);
The spindle (20), the spindle (20) slides along the Z axis direction and sets up on second frame (12), screw joint has lead screw nut (14) on first lead screw (13), lead screw nut (14) are fixed in spindle (20) upper end.
2. The spark machine Z-axis thermal elongation compensation connection structure according to claim 1, wherein a driving motor (15) is fixedly arranged at the upper end of the second frame (12), and a coupling (16) for connection is arranged between a power output shaft of the driving motor (15) and the first screw rod (13).
3. The spark machine Z-axis thermal elongation compensation connection structure according to claim 2, wherein the coupling (16) is an axial floating coupling.
4. A spark machine Z-axis thermal elongation compensation connection structure according to any one of claims 1-3, wherein the upper end of the first screw rod (13) is connected with a first bearing (19), and an outer ring of the first bearing (19) is axially slidably disposed in a shaft hole of the second frame (12).
5. The spark machine Z-axis thermal elongation compensation connection structure according to claim 4, wherein the second frame (12) is provided with a first guide rail slider mechanism (17) for sliding a guide main shaft (20).
6. The spark machine Z-axis thermal elongation compensation connection structure according to claim 5, wherein a second guide rail slider mechanism (18) is provided at the lower end of the first frame (11), and the first frame (11) is slidably disposed on the spark machine along the Y-axis direction through the second guide rail slider mechanism (18).
7. The structure for compensating for Z-axis thermal elongation of a spark machine according to claim 6, wherein the first frame (11) is provided with a second driving means for driving the first frame (11) to slide in the Y-axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423687.7U CN220880845U (en) | 2023-09-07 | 2023-09-07 | Z-axis thermal elongation compensation connection structure of spark machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423687.7U CN220880845U (en) | 2023-09-07 | 2023-09-07 | Z-axis thermal elongation compensation connection structure of spark machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220880845U true CN220880845U (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322423687.7U Active CN220880845U (en) | 2023-09-07 | 2023-09-07 | Z-axis thermal elongation compensation connection structure of spark machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220880845U (en) |
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2023
- 2023-09-07 CN CN202322423687.7U patent/CN220880845U/en active Active
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