Horizontal lathe tool quick-changing device

Abstract

The utility model belongs to the technical field of horizontal lathes, and particularly relates to a horizontal lathe tool quick-changing device which is installed on a machine tool spindle and comprises a tool body, a first inner hexagon screw, a pressing block, a hole turning positioning plate, a first baffle and a nylon screw. A plurality of threaded through holes are formed in the top of the tool body, the first inner hexagon screws penetrate through the threaded through holes and are in threaded connection with the pressing block, the hole turning positioning plate is arranged on the upper surface of a bottom plate of the tool body, and the first baffles are arranged on the left side and the right side of the tool body respectively to abut against the hole turning positioning plate. A threaded through hole is formed in the surface of the hole turning positioning plate, and the nylon screw is installed in the threaded through hole and used for locking a part to be machined. The positioning device is suitable for positioning and processing square parts, and effectively ensures the product quality.

Description

Technical Field

[0001] This utility model belongs to the field of horizontal lathe technology, specifically relating to a quick-change device for tooling on a horizontal lathe. Background Technology

[0002] Electro-hydraulic servo valves are widely used in aviation, aerospace, shipbuilding, metallurgy, chemical and other fields. They are key components in electro-hydraulic servo control, and are hydraulic control valves that receive analog electrical signals and output modulated flow and pressure accordingly. Hydraulic control valves are characterized by fast dynamic response, high control accuracy, and long service life, therefore, high requirements are placed on the valve body machining accuracy and appearance quality.

[0003] Horizontal lathes are machine tools primarily used for machining the outer diameter, inner diameter, and threads of parts. Typically, the machine spindle drives the part in rotation as the primary motion, while the cutting tool performs axial and radial movements for feed. Lathes have a relatively complex structure and offer relatively high machining accuracy. External turning tools can be used to machine the end faces and outer diameters of parts; internal boring tools and drills can be used to machine the inner diameters and steps of parts; and thread turning tools can be used to machine the threads of parts.

[0004] Currently, horizontal lathes on the market are mainly used for machining shaft and disc parts. For holes in square parts (valve bodies), most lathes use four-jaw chucks to hold the parts and use dial gauges to correct the center of the holes to meet the part's positional requirements (eccentricity). This type of product is produced in small batches with many varieties, which leads to a significant increase in auxiliary machining time and makes it easier for the parts' dimensions and positional requirements to exceed tolerances. Therefore, this machining correction method is not conducive to practical promotion and is not suitable for the machining characteristics of products with many varieties and small batches.

[0005] Therefore, how to provide a quick positioning and replacement device for square-shaped parts suitable for horizontal lathes has become a problem that needs to be considered by those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to solve the problems of clamping square parts and ensuring the appearance quality of parts in existing production technologies, and to propose a quick-change tooling device for horizontal lathes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A quick-change tooling device for a horizontal lathe, mounted on the machine tool spindle, includes a tooling body, a first hexagon socket screw, a pressure block, a machining hole positioning plate, a first baffle, and nylon screws. The tooling body is hollow inside and connected to the front end face and left and right end faces respectively. The top of the tooling body is provided with several threaded through holes. The first hexagon socket screw passes through the threaded through holes and is threadedly connected to the pressure block. The machining hole positioning plate is set on the upper surface of the bottom plate of the tooling body. The first baffle is set on the left and right sides of the tooling body to press against the machining hole positioning plate. The surface of the machining hole positioning plate is provided with threaded through holes. The nylon screws are installed in the threaded through holes to lock the workpiece to be processed.

[0009] Furthermore, the rear end face of the tooling body is provided with a 7:24 conical inner hole, and the machine tool spindle is provided with a 7:24 cone that matches the conical inner hole.

[0010] Furthermore, the surface of the machine tool spindle is also provided with a cylindrical pin for circumferential positioning and a flange threaded hole arranged around the cone. The rear end face of the tooling body is provided with a pin hole corresponding to the cylindrical pin. The tooling body is fixed to the machine tool spindle by a second internal hexagon screw.

[0011] Furthermore, it also includes a first baffle, which is respectively disposed on the left and right sides of the tooling body to restrict and clamp the machine hole positioning plate.

[0012] Furthermore, it also includes a second baffle. The back plate of the machine hole positioning plate is provided with a threaded hole, and the second baffle is fixed to the machine hole positioning plate by a countersunk locking screw.

[0013] Furthermore, it also includes a counterweight, which is installed on the tooling body by a third hexagon socket screw, to make the dynamic balance value of the tooling body <0.01mm / Kg.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model features a simple structure and convenient installation, making it suitable for machining valve body parts (specifically, the bore diameter of square-shaped parts). By configuring corresponding tooling, it enables rapid part replacement while ensuring the required distance and dimensional tolerances between the reference surface and the center of the main bore, thus effectively guaranteeing the quality of the valve body product. This quick-change device is simple in structure, practical, and low in manufacturing cost, making it suitable for rapidly switching tooling during the processing of various types of small-batch products. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is a front view of the structure of this utility model;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a bottom view of the structure of this utility model;

[0020] Figure 5 This is a right view of the structure of this utility model;

[0021] Figure 6 This is a cross-sectional view of the structure of this utility model.

[0022] In the diagram, 1—machine tool spindle; 2—tool body; 3—cylindrical pin; 4—second hexagon socket screw; 5—counterweight; 6—third hexagon socket screw; 7—first baffle; 8—fifth hexagon socket screw; 9—pressure block; 10—first hexagon socket screw; 11—machine hole positioning plate; 12—second baffle; 13—countersunk head locking screw; 14—fourth hexagon socket screw; 15—nylon screw; 16—valve body. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figure 1-6 As shown, this embodiment discloses a quick-change tooling device for a horizontal lathe, installed on the machine tool spindle 1, used for machining the valve body 16 of an electro-hydraulic servo valve. It includes a tooling body 2, a first hexagon socket screw 10, a pressure block 9, a machining hole positioning plate 11, and nylon screws 15. The tooling body 2 is internally hollow and connected to the front end face and left and right end faces respectively. The pressure block 9 is disposed inside the tooling body 2. The top of the tooling body 2 has several threaded holes. The first hexagon socket screw 10 passes through the screw holes and is threadedly connected to the pressure block 9. The pressure block 9 is used for… To avoid damage to the surface of the valve body 16 during press-fitting, different threaded holes are selected to ensure that the pressure block 9 is as centered as possible in the valve body 16. The machining hole positioning plate 11 is fastened to the upper surface of the bottom plate of the tooling body 2 by the fourth internal hexagon screw 14. The valve body 16 is placed on the machining hole positioning plate 11. The side of the machining hole positioning plate 11 is provided with threaded holes. Nylon screws 15 are installed in the threaded through holes and lock the valve body 16. The valve body 16 is positioned by the pressure block 9 and the machining hole positioning plate 11 to meet the position and shape requirements of the valve body 16.

[0026] Specifically, the rear end face of the fixture body 2 is provided with a 7:24 conical inner hole, and the machine tool spindle 1 is provided with a 7:24 cone that matches the conical inner hole. The surface of the machine tool spindle 1 is also provided with a cylindrical pin 3 for circumferential positioning and a flange threaded hole surrounding the cone. The rear end face of the fixture body 2 is provided with a pin hole corresponding to the cylindrical pin 3. The 7:24 conical inner hole of the fixture body 2 is assembled onto the 7:24 cone of the machine tool spindle 1 and they cooperate with each other, so that the rotation center of the lathe is coaxial with the rotation center of the fixture body 2. Then, the cylindrical pin 3 on the bottom end face of the cone of the machine tool spindle 1 is used for circumferential positioning. Finally, the fixture body 2 is fastened to the machine tool spindle 1 with a second internal hexagon screw 4.

[0027] As a preferred embodiment of the present invention, it also includes a first baffle, which is threadedly connected to the left and right sides of the tooling body 2 by a fifth internal hexagon screw 8, thereby restricting and clamping the machine hole positioning plate 11.

[0028] As a preferred embodiment of the present invention, it also includes a second baffle 12. The back plate of the machine hole positioning plate 11 is provided with a countersunk threaded hole, and the second baffle 12 is fixed on the machine hole positioning plate 11 by a countersunk locking screw 13.

[0029] As a preferred embodiment of this utility model, it also includes a counterweight 5, which is provided with a strip groove. The counterweight 5 is mainly used to find the position of the overall device imbalance by performing vibration analysis or three-dimensional simulation mapping with a dynamic balancing instrument. Then, the counterweight 5 is aligned with the threaded hole on the tooling body 2 and fastened to the position of imbalance by the third internal hexagon screw 6 so that its dynamic balance value is <0.01mm / Kg.

[0030] In use, the quick-change device of this utility model is first fastened to the machine tool spindle 1. Then, the first baffle 7 is fixed to the machining hole positioning plate 11 by countersunk locking screws 13. The machining hole positioning plate 11 is installed on the tooling body 2 and flattened against the first baffle 7. The machining hole positioning plate 11 is then fastened with fifth hexagon socket screws 8. Vibration analysis or three-dimensional simulation mapping is performed using a dynamic balancing instrument to find the position of the overall device imbalance. Then, the counterweight 5 is aligned with the threaded hole on the tooling body 2 and fastened to the position of imbalance by third hexagon socket screws 6 to make its dynamic balance value <0.01mm / Kg. Finally, the valve body 16 is placed on the machining hole positioning plate 11 and pressed with pressure block 9 before machining the valve body 16.

[0031] Example 2

[0032] This utility model can also be adapted to different width, height and center distance dimensions of parts. Instead of setting the first baffle and the second baffle 12, a corresponding hole positioning plate 11 can be designed and selected. The hole positioning plate 11 can be directly installed on the tooling body 2 on the machine tool spindle 1. After being calibrated by a dial indicator, the part can be finally machined.

[0033] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A horizontal lathe tool quick change device installed on a machine tool spindle, characterized in that, The fixture includes a main body, a first hex socket screw, a pressure block, a machining hole positioning plate, a first baffle, and nylon screws. The main body of the fixture is hollow inside and connected to the front end face and the left and right end faces respectively. The top of the main body of the fixture is provided with several threaded through holes. The first hex socket screw passes through the threaded through holes and is threadedly connected to the pressure block. The machining hole positioning plate is set on the upper surface of the bottom plate of the main body of the fixture. The surface of the machining hole positioning plate is provided with threaded through holes. The nylon screws are installed in the threaded through holes for locking the parts to be processed.

2. The horizontal lathe tool quick change device according to claim 1, characterized in that, The rear end face of the tooling body is provided with a 7:24 conical inner hole, and the machine tool spindle is provided with a 7:24 cone that matches the conical inner hole.

3. The horizontal lathe tool quick change device according to claim 2, characterized in that, The surface of the machine tool spindle is also provided with a cylindrical pin for circumferential positioning and a flange threaded hole arranged around the cone. The rear end face of the tooling body is provided with a pin hole corresponding to the cylindrical pin. The tooling body is fixed to the machine tool spindle by a second internal hexagon screw.

4. The horizontal lathe tool quick change device according to claim 1, characterized in that, It also includes a first baffle, which is respectively disposed on the left and right sides of the tooling body to restrict and clamp the machine hole positioning plate.

5. The horizontal lathe tool quick change device according to claim 1, characterized in that, It also includes a second baffle. The back plate of the machine hole positioning plate is provided with a threaded hole, and the second baffle is fixed to the machine hole positioning plate by a countersunk locking screw.

6. The horizontal lathe tool quick change device according to claim 1, characterized in that, It also includes a counterweight, which is mounted on the tooling body by a third hexagon socket screw, to make the dynamic balance value of the tooling body <0.01mm / Kg.

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