CN219617236U - Eccentric processing lathe fixture for valve device - Google Patents

Abstract

The utility model provides a valve eccentric processing lathe fixture, which is arranged on a chuck of a spindle box of a lathe and comprises a workpiece positioning seat, a workpiece clamping assembly and a driving device for driving the workpiece clamping assembly to press a workpiece on the workpiece positioning seat, wherein the workpiece positioning seat is provided with a positioning groove for placing the workpiece, the rear side surface of the positioning groove is provided with a positioning protruding part for positioning the workpiece, the rear side surface of the positioning groove is also provided with a through hole corresponding to a hole to be processed of the workpiece, the through hole is concentric with the chuck of the spindle box, the workpiece clamping assembly is arranged on the front side of the workpiece positioning seat, and the driving device is connected with the workpiece clamping assembly and is used for driving the workpiece clamping assembly to press the workpiece in the positioning groove in the workpiece positioning seat. According to the utility model, the workpiece is not required to be locked by a screw, so that the production efficiency is greatly improved, and in addition, the through hole is concentric with the chuck of the spindle box, so that the concentricity of the hole to be processed of the workpiece and the chuck can be ensured.

Description

A lathe fixture for eccentric processing of valves

technical field

The application relates to the field of eccentric machining fixtures for valves, in particular to a lathe fixture for eccentric machining of valves.

Background technique

A lathe fixture for machining eccentric hole bushings is disclosed in the Chinese invention patent, its publication (announcement) number is: CN112091653A, its publication (announcement) date: 2020-12-18, which discloses a lathe fixture for processing eccentric hole bushings, It is used to set on the lathe, and use the general lathe to process the eccentric hole of the shaft. It includes a base, the base has a mounting plate, the mounting plate is provided with a clamping shaft, the mounting plate is provided with a T-shaped slot, and a V-shaped block is provided. The V-shaped block has a V-shaped groove. The first screw is set in the middle, the big end of the first screw is inserted into the T-shaped slot, the rod protrudes away from the clamping axis and passes through the V-shaped block, and the first nut is set to fit and lock the first screw thread The V-shaped block is provided with a support seat, and a second screw is provided. The large end of the second screw is inserted into the T-shaped slot, the rod passes through the support seat, and the second nut is threadedly matched with the second screw to fix the support seat. A briquetting block is provided, the briquetting block has a pressing surface and an abutting surface, a through hole is set on the side away from the abutting surface, a threaded hole is set on the support seat, and a third screw is set to pass through the through hole and thread the threaded hole.

However, this fixture has the following defects. If the workpiece is not round and the center of the machining circle is not in the center of the workpiece, it is difficult for the fixture to ensure that the center of the machining circle of the workpiece is concentric with the main body of the lathe head. In addition, the fixture needs to lock the workpiece through screws, so that Reduced production efficiency.

Utility model content

The present application provides a lathe clamp for eccentric processing of a valve device, which can ensure that the center of the processing circle remains concentric with the main body of the lathe head when the workpiece is processed, and can also improve production efficiency.

In order to achieve the above object, the application provides the following technical solutions:

A lathe fixture for eccentric processing of valves, the fixture is installed on the chuck of the headstock of the lathe, including a workpiece positioning seat, a workpiece clamping assembly and a driving device that drives the workpiece clamping assembly to press the workpiece on the workpiece positioning seat , the workpiece positioning seat has a positioning groove for placing the workpiece, a positioning protrusion is provided on the rear side of the positioning groove, the positioning protrusion is used for positioning the workpiece, and the positioning recess The rear side of the groove is also provided with a through hole, the through hole corresponds to the workpiece hole to be processed, the through hole is concentric with the chuck of the spindle box, and the workpiece clamping assembly is arranged on the front side of the workpiece positioning seat. The driving device is connected with the workpiece clamping assembly, and is used to drive the workpiece clamping assembly to press the workpiece into the positioning groove in the workpiece positioning seat.

In a possible implementation manner, the workpiece clamping assembly includes a pressing block, a pressing base plate, a piston, a connecting head, a pressing ring, a flange and a mounting seat, and the pressing block is installed on the front end of the pressing base plate On the surface, the rear end of the pressing bottom plate is threadedly connected with the front end of the piston, the connecting head is installed at the rear end of the piston, the piston is installed in the mounting seat, and can move forward and backward in the mounting seat, the method The flange is arranged at the rear end of the mounting seat, and is used to limit the position of the piston moving backward.

In a possible implementation manner, an opening is provided on a side of the positioning groove.

In a possible implementation manner, the pressing block is elastic.

In a possible implementation manner, the pressing bottom plate is elastic.

In a possible implementation manner, a mounting groove is provided on the side of the piston, and a marble is provided in the mounting groove, and the piston can move back and forth in the mounting seat through the marble.

The beneficial effect of this application is:

When the workpiece is clamped in the present application, the workpiece is first put into the positioning groove of the workpiece positioning seat, and the workpiece is positioned through the positioning protrusion. After the workpiece is positioned, the driving device starts to drive the workpiece clamping assembly to hold the workpiece Compressed in the positioning groove, so that the workpiece does not need to be locked by screws, thereby greatly improving production efficiency. In addition, the rear side of the positioning groove of the present application is also provided with a through hole, which corresponds to the hole to be processed in the workpiece. Correspondingly, the purpose of setting the through hole is to allow the tool of the lathe to penetrate into the workpiece to be processed for processing. The through hole is concentric with the chuck of the spindle box, so that when the workpiece is installed, the hole to be processed and the chuck of the workpiece can be guaranteed Concentric, reducing the generation of waste products.

Description of drawings

Fig. 1 is a valve device, i.e. a schematic diagram of a three-dimensional structure of a workpiece;

Fig. 2 is the structural representation when an embodiment of the present application is installed on a lathe;

Fig. 3 is a right side view of a valve device eccentric machining lathe fixture provided by an embodiment of the present application;

Fig. 4 is the sectional view at A-A place of Fig. 3;

Fig. 5 is an exploded perspective view of a lathe clamp for eccentric machining of a valve device provided by an embodiment of the application.

Explanation of reference signs:

1. Workpiece positioning seat; 2. Workpiece clamping assembly; 3. Driving device; 4. Workpiece;

11. Positioning groove; 12. Positioning protrusion; 13. Through hole; 14. Opening;

21. Compression block; 22. Compression bottom plate; 23. Piston; 24. Connector; 25. Compression ring; 26. Flange; 27. Mounting seat;

231, installation groove; 232, marbles;

Detailed ways

The terms used in the embodiments of the application are only used to explain the specific embodiments of the application, and are not intended to limit the application. The implementation of the embodiments of the application will be described in detail below with reference to the accompanying drawings.

The workpiece in this embodiment is the valve device as shown in FIG. 1 .

The lathe shown in Figure 2 is a numerically controlled lathe, which comprises a headstock 5, a chuck 6, a tool rest 7, a tailstock 8, and a bed 9, wherein the valve device eccentric processing lathe fixture is installed on the chuck of the lathe, The spindle box of the lathe can drive the chuck to drive the valve to eccentrically process the lathe fixture to rotate.

The chuck 6 and the rotary oil cylinder installed on the CNC lathe are the drive device 3 of the fixture. The hydraulic station provides the driving force, and the hydraulic oil pump is used to continuously supply liquid and pressurize the rotary cylinder. The oil pressure of the hydraulic station makes the rotary cylinder complete the telescopic movement of the piston rod. The piston rod thus drives the piston 23 to move back and forth to compress the workpiece.

As shown in Figure 3 and Figure 5, a valve device eccentric processing lathe clamp 10, the valve device eccentric processing lathe clamp is installed on the chuck of the headstock of the lathe, and can rotate with the chuck, including workpiece positioning Seat 1, workpiece clamping assembly 2 and drive workpiece clamping assembly 2 press the workpiece 4 on the driving device 3 on the workpiece positioning seat 1, the workpiece positioning seat 1 has a positioning groove 11 for placing the workpiece, and the positioning groove The rear side of 11 is provided with positioning protrusion 12, and positioning protrusion 12 is used for positioning workpiece 4, and the rear side of positioning groove 11 is also provided with through hole 13, and through hole 13 is corresponding to the hole to be processed of workpiece , the through hole 13 is concentric with the chuck of the spindle box, the workpiece clamping assembly 2 is arranged on the front side of the workpiece positioning seat 1, the driving device 3 is connected with the workpiece clamping assembly 2, and is used to drive the workpiece clamping assembly 2 to compress the workpiece In the positioning groove 11 in the workpiece positioning seat 1.

The driving device 3 in this embodiment may be a hydraulic cylinder, a motor, or an air cylinder, etc., which is not limited in this embodiment of the present application.

When clamping the workpiece 4 in the present application, the workpiece 4 is first put into the positioning groove 11 of the workpiece positioning seat 1, and the workpiece is positioned by the positioning protrusion 12. After the workpiece is positioned, the driving device 3 starts to drive The workpiece clamping assembly 2 presses the workpiece into the positioning groove 11, so that the workpiece does not need to be locked by screws, thereby greatly improving the production efficiency. In addition, the rear side of the positioning groove 11 of the present application is also provided with a through hole 13. The through hole 13 corresponds to the hole of the workpiece to be processed. The through hole 13 is set so that the tool of the lathe can be inserted into the workpiece to be processed for processing. The through hole 13 is concentric with the chuck of the spindle box, so that when the workpiece is installed Finally, it can ensure that the hole to be processed of the workpiece is concentric with the chuck, reducing the generation of waste products.

Specifically, as shown in Figure 4, the workpiece clamping assembly 2 includes a compression block 21, a compression base plate 22, a piston 23, a connector 24, a pressure ring 25, a flange 26 and a mounting seat 27, and the compression block 21 is installed On the front end face of the compression base plate 22, the rear end of the compression base plate 22 is threadedly connected with the front end of the piston 23, the connector 24 is installed on the rear end of the piston 23, the piston 23 is installed in the mounting seat 27, and can For forward and backward movement, the flange 26 is arranged at the rear end of the mounting seat 27 to limit the backward movement position of the piston 23 .

Specifically, as shown in FIG. 5 , an opening 14 is provided on a side of the positioning groove 11 . The opening 14 is provided to facilitate the clamping of the workpiece. When clamping, the workpiece only needs to be put into the positioning groove from the opening, thereby greatly improving the clamping speed of the workpiece.

Specifically, the pressing block 21 has elasticity, and the pressing bottom plate 22 has elasticity. Both the pressing block and the pressing bottom plate are made of PU material, so that the pressing block can play a buffering role when contacting the workpiece, thereby preventing the pressing block from crushing the workpiece.

Specifically, as shown in FIG. 5 , a mounting groove 231 is provided on the side of the piston 23 , and a marble 232 is disposed in the mounting groove 231 , and the piston 23 can move back and forth in the mounting seat 27 through the marble 232 . The arrangement of the marbles makes the movement of the piston in the mounting seat smoother and has a longer service life.

In the description of the embodiments of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a An indirect connection through an intermediary may be an internal communication between two elements or an interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

The devices or components referred to in the embodiments of the present application must have specific orientations, be constructed and operated in specific orientations, and therefore should not be construed as limiting the embodiments of the present application. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specifically specified.

The terms "first," "second," "third," "fourth," etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily Used to describe a particular sequence or sequence. It should be understood that data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein, for example, can be implemented in sequences other than those illustrated or described herein Furthermore, the terms "may include" and "have" and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus comprising a sequence of steps or units need not be limited to the expressly listed Instead, other steps or elements not explicitly listed or inherent to the process, method, product or apparatus may be included.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or modify some or all of the technical features. equivalent replacement. However, these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (6)

1. A valve eccentric processing lathe fixture, said fixture is installed on the chuck of the headstock of the lathe, its characterized in that: the workpiece clamping device comprises a workpiece positioning seat, a workpiece clamping assembly and a driving device for driving the workpiece clamping assembly to tightly press a workpiece on the workpiece positioning seat, wherein the workpiece positioning seat is provided with a positioning groove for placing the workpiece, a positioning protruding part is arranged on the rear side surface of the positioning groove and used for positioning the workpiece, a through hole is further formed in the rear side surface of the positioning groove and corresponds to a workpiece to be processed, the through hole is concentric with a chuck of a spindle box, the workpiece clamping assembly is arranged on the front side of the workpiece positioning seat, and the driving device is connected with the workpiece clamping assembly and used for driving the workpiece clamping assembly to tightly press the workpiece in the positioning groove in the workpiece positioning seat.

2. The valve eccentric tooling lathe fixture of claim 1, wherein: the workpiece clamping assembly comprises a compression block, a compression bottom plate, a piston, a connector, a compression ring, a flange and a mounting seat, wherein the compression block is mounted on the front end face of the compression bottom plate, the rear end of the compression bottom plate is in threaded connection with the front end of the piston, the connector is mounted at the rear end of the piston, the piston is mounted in the mounting seat and can move back and forth in the mounting seat, and the flange is arranged at the rear end of the mounting seat and used for limiting the position of the piston moving backwards.

3. The valve eccentric tooling lathe fixture of claim 1, wherein: an opening is formed in the side face of the positioning groove.

4. The valve eccentric tooling lathe fixture of claim 2, wherein: the compaction block has elasticity.

5. The valve eccentric tooling lathe fixture of claim 2, wherein: the compaction base plate has elasticity.

6. The valve eccentric tooling lathe fixture of claim 2, wherein: the side of the piston is provided with a mounting groove, a marble is arranged in the mounting groove, and the piston can move back and forth in the mounting seat through the marble.