Tap indexing shaft sliding module assembly

Abstract

This application discloses a tap indexing shaft sliding module assembly, including a tap positioning indexing shaft clamping module, a rear fixed center, and a sliding module. After oil is supplied through the oil inlet pipe, the sliding module panel slides on the sliding module main board. The surface finish of the sliding module panel and the sliding module main board exceeds 0.05 μm, and an oil film is generated after oil is supplied through the oil inlet pipe, forming a seal. This application achieves precise adjustment between the sliding panel and the main board through the design of the related structures of the sliding module. The grinding fit accuracy is high, and fine adjustment is achieved by relying on the adjusting screws on both sides to achieve a fit state that is both movable and precise. The entire sliding module internally supplies oil to the sliding module panel and the sliding module main board through hydraulic pressure. There is no leakage in the internal chamber, which creates internal pressure and floats the sliding module panel and the sliding module main board, reducing friction.

Description

Technical Field

[0001] This application relates to the field of tap finishing technology, and in particular to a tap indexing shaft sliding module assembly. Background Technology

[0002] Taps play a crucial role in the machinery industry. They can precisely machine internal threads and support various machining steps. However, in many applications where high precision is not required, to simplify operation, it is often chosen to slightly enlarge the pilot hole and directly use a head tap to complete the thread machining. But in the field of high-end equipment manufacturing, how to control the machining progress of the tap is a technical problem that needs to be solved. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a tap indexing shaft sliding module assembly, which solves the problem of insufficient precision during tap machining.

[0004] This application provides a tap indexing shaft sliding module assembly, including a tap positioning indexing shaft clamping module, a rear fixed center, and a sliding module;

[0005] The bottom of the tap positioning and indexing shaft clamping module is mounted on the sliding module for moving back and forth in the horizontal direction; the rear fixed center is fixed on the sliding module; the central axis of the tap positioning and indexing shaft clamping module and the central axis of the rear fixed center are on the same straight line; the tap positioning and indexing shaft clamping module is used to clamp the workpiece and then fix it with the rear fixed center to fix the workpiece.

[0006] The sliding module includes a sliding module panel, a sliding module main board, an adjusting pressure bar, and adjusting screws;

[0007] The top surface of the sliding module panel is fixed to the tap positioning indexing shaft clamping module by a nut; the sliding module panel is located on the top surface of the sliding module main board, and protrusions are provided on both sides of the sliding module panel; the adjusting pressure strip is provided between the protrusions and the sliding module main board; the adjusting screw is provided on the protrusion for adjusting the gap between it and the adjusting pressure strip; a fixing block is provided between the sliding module panel and the sliding module main board; a sealed chamber is formed between the fixing block, the sliding module panel, the sliding module main board and the adjusting pressure strip; the fixing block is used to connect the oil inlet pipe; after oil is introduced into the oil inlet pipe, the sliding module panel slides on the sliding module main board; the surface finish of the sliding module panel and the sliding module main board exceeds 0.05μm, and after oil is introduced into the oil inlet pipe, an oil film is generated to form a seal.

[0008] Furthermore, the tap positioning and indexing shaft clamping module includes a positioning and indexing shaft, a clamping mechanism, a tap indexing center extension rod, and a tap indexing center;

[0009] The positioning indexing shaft is coaxially connected to the clamping mechanism; the tap indexing tip extension rod is fixed to the front end of the clamping mechanism; the tap indexing tip is installed on the free end of the tap indexing tip extension rod by welding or screwing, and is made of cemented carbide or diamond.

[0010] Furthermore, the positioning indexing shaft includes a rotating spindle, a main bearing, a direct-drive DD motor servo stator, a motor rotor, and a flange; the direct-drive DD motor servo stator is connected to one end of the main bearing; the other end of the main bearing is connected to the rotating spindle; the motor rotor is installed inside the side wall of the direct-drive DD motor servo stator; a high-precision encoder is provided at the end of the motor rotor;

[0011] The front end of the rotating spindle is fixed to the clamping mechanism by an adjusting nut;

[0012] The end of the positioning indexing shaft is provided with an air guide rotary joint; an air passage is formed inside the positioning indexing shaft, and its outlet faces the clamping mechanism.

[0013] Furthermore, the clamping mechanism includes a chuck seat body, a limiting pin, a piston, and an end cap; the end cap is provided at the front end of the chuck seat body; a chamber is formed between the chuck seat body and the end cap for housing a piston that can move back and forth; a spring is provided at the front end of the piston, and an air port is connected to the rear end; the air port communicates with an air passage formed inside the positioning indexing shaft; a chuck is connected to the inner wall of the piston, and they move back and forth together; a limiting pin is provided on the end cap for controlling the direction of movement of the chuck and preventing the chuck from moving circumferentially.

[0014] Furthermore, a rear positioning bracket is provided on the sliding module, distributed at both ends of the sliding module panel; the rear fixed tip is fixed to the rear positioning bracket; the rear positioning bracket is fixed to the sliding module, and a positioning bracket adjustment block is provided on the top of the rear positioning bracket, allowing selection of a suitable height by replacement; the positioning bracket adjustment block has a positioning bracket adjustment screw on its surface facing the tap positioning indexing shaft clamping module, which allows for fine adjustment of the positioning bracket adjustment block in the horizontal direction; the positioning bracket adjustment block is fixed to the entire rear positioning bracket by the positioning bracket adjustment screw; the rear fixed tip passes through the top of the positioning bracket adjustment block, and a tip adjustment screw is provided on the positioning bracket adjustment block to adjust the position of the rear fixed tip in the horizontal and vertical directions.

[0015] The beneficial effects of this invention are:

[0016] This application achieves a precise fit between the sliding panel and the main board through the design of the related structure of the sliding module. The grinding fit is highly accurate, and fine adjustment is achieved by relying on the adjusting screws on both sides to achieve a fit that is both movable and precise. The entire sliding module is equipped with hydraulic pressure to deliver oil to the sliding module panel and the sliding module main board. The oil does not leak in the internal chamber, creating internal pressure that lifts the sliding module panel and the sliding module main board, reducing friction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of this application;

[0019] Figure 2 This is a cross-sectional structural diagram of this application;

[0020] Figure 3 It is a partial structural cross-sectional view;

[0021] Figure 4 This is a side structural diagram of this application;

[0022] Figure 5 This is a cross-sectional structural diagram from another angle of this application;

[0023] Figure 6 This is a cross-sectional structural diagram of the sliding module.

[0024] Meaning of the reference numerals in the diagram:

[0025] The components include: tap positioning and indexing shaft clamping module 100, positioning and indexing shaft 110, rotating spindle 111, main bearing 112, direct drive DD motor servo motor stator 113, motor rotor 114, flange 115, high-precision encoder 116, housing 117, oil seal 118, air guide rotary joint 119, clamping mechanism 120, piston 121, chuck seat body 122, limit pin 123, end cover 124, spring 125, chuck 126, adjusting nut 129, tap indexing center extension rod 130, and tap indexing center 140.

[0026] Rear fixed center 200, center adjusting screw 201, rear positioning bracket 210, positioning bracket adjusting block 211, positioning bracket adjusting screw 212;

[0027] Sliding module 300, sliding module panel 301, sliding module main board 302, adjusting pressure bar 303, adjusting screw 304, fixing block 305, protrusion 306, oil inlet pipe 307, oil outlet pipe 308, sealing plate 309. Detailed Implementation

[0028] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] The present application will be described below with reference to specific embodiments:

[0032] As shown in the figure, a tap indexing shaft sliding module assembly is divided into three parts: a tap positioning indexing shaft clamping module 100, a rear fixed center 200, and a sliding module 300.

[0033] The bottom of the tap positioning indexing shaft clamping module 100 is mounted on the sliding module 300 for moving back and forth in the horizontal direction.

[0034] Specifically, the tap positioning indexing shaft clamping module 100 is fixed to the sliding module panel 301 by a nut, and moves horizontally together with the sliding module panel 301 fixed by the nut.

[0035] The rear fixed tip 200 is fixed to the sliding module 300. Specifically, a rear positioning bracket 210 is provided on the sliding module 300, distributed at both ends of the sliding module 300 along with the sliding module panel 301. The rear positioning bracket 210 is fixed to the sliding module 300, and a positioning bracket adjustment block 211 is provided on the top of the rear positioning bracket 210, allowing for selection of a suitable height by replacement. A positioning bracket adjustment screw 212 is provided on the surface of the tap positioning indexing shaft clamping module 100 of the positioning bracket adjustment block 211, which allows for fine adjustment of the positioning bracket adjustment block 211 in the horizontal direction. The positioning bracket adjustment block 211 is fixed to the entire rear positioning bracket 210 by the positioning bracket adjustment screw 212.

[0036] The rear fixed tip 200 passes through the top of the positioning bracket adjustment block 211. The positioning bracket adjustment block 211 is provided with tip adjustment screws 201, which are used to adjust the position of the rear fixed tip 200 in the horizontal and vertical directions respectively. This adjustment is generally used for fine-tuning to improve the accuracy in the machining process.

[0037] The rear fixed center 200 is a non-rotating wear-resistant center. Its length and position can be adjusted by the center adjusting screw 201 according to different workpieces and grinding wheel sizes.

[0038] Under normal working conditions, the central axis of the tap positioning and indexing shaft clamping module 100 and the central axis of the rear fixed center 200 are on the same straight line. The tap positioning and indexing shaft clamping module 100 is used to clamp the workpiece and move towards the rear fixed center 200 to achieve the purpose of fixing the workpiece.

[0039] The tap positioning and indexing shaft clamping module 100 in this application includes a positioning and indexing shaft 110, a clamping mechanism 120, a tap indexing center extension rod 130, and a tap indexing center 140.

[0040] The positioning indexing shaft 110 is coaxially connected to the clamping mechanism 120. The tap indexing tip extension rod 130 is fixed to the front end of the clamping mechanism 120, and the tap indexing tip 140 is installed on the free end of the tap indexing tip extension rod 130 by welding or screwing, and is made of cemented carbide or diamond.

[0041] The main function of the tap indexing center extension rod 130 is to measure the coaxiality during installation using a micrometer scale. The accuracy can be adjusted to 0.001 mm via the screws on the side, achieving even higher precision at the center. The tap indexing center 140 can be replaced without damaging the extension rod and base through methods such as unsoldering. After replacement and adjustment to coaxiality, it can be dressed and ground online to achieve the same high precision as the mounting spindle.

[0042] As a specific embodiment, the positioning indexing shaft 110 includes a rotating spindle 111, a main bearing 112, a direct-drive DD motor servo motor stator 113, a motor rotor 114, and a flange 115 located inside the housing 117. The direct-drive DD motor servo motor stator 113 is connected to one end of the main bearing 112, and the other end of the main bearing 112 is connected to the rotating spindle 111. The motor rotor 114 is installed inside the side wall of the direct-drive DD motor servo motor stator 113, and a high-precision encoder 116 is provided at the end of the motor rotor 114. An oil seal 118 is provided at the front end of the positioning indexing shaft 110 to ensure internal airtightness.

[0043] The front end of the rotating spindle 111 is fixed to the clamping mechanism by adjusting nut 129. The end of the positioning indexing shaft 110 is provided with an air guide rotary joint 119, as shown in the figure. An air passage is formed inside the positioning indexing shaft 110, and its outlet faces the clamping mechanism. Specifically, it is located on the chuck body, facing the rear end of the piston 121. The entire tap positioning indexing shaft clamping module 100 rotates continuously under the action of the stator rotor.

[0044] The clamping mechanism 120 includes a chuck seat body 122, a limiting pin 123, and a piston 121. An end cap 124 is provided at the front end of the chuck seat body 122. A chamber is formed between the chuck seat body 122 and the end cap 124 for housing a piston 121 that can move back and forth. A spring 125 is provided at the front end of the piston 121, and an air passage is connected to its rear end. This air passage communicates with an air path formed inside the positioning indexing shaft. A chuck 126 is connected to the inner wall of the piston 121, and they move back and forth together. Under the action of the spring 125 (not shown in the figure, only the area where the spring is located is shown), the piston 121 can achieve controllable back and forth movement under the pressure within the control air passage A. A limiting pin 123 is provided on the end cap 124 to control the direction of movement of the chuck 126, preventing the chuck 126 from moving circumferentially, so that the chuck 126 can only move back and forth in the horizontal direction.

[0045] As a specific embodiment, the sliding module 300 includes a sliding module panel 301, a sliding module main board 302, an adjusting pressure bar 303, an adjusting screw 304, and a fixing block 305.

[0046] The top surface of the sliding module panel 301 is fixed with a nut to the tap positioning indexing shaft clamping module 100. The sliding module panel 301 is located on the top surface of the sliding module main board 302, and protrusions 306 are provided on both sides of the sliding module panel 301. An adjusting pressure strip 303 is provided between the protrusions 306 and the sliding module main board 302. Under normal conditions, the adjusting pressure strip 303 is fixedly connected to the sliding module main board 302. An adjusting screw 304 is provided on the protrusion 306 for adjusting the gap between it and the adjusting pressure strip 303.

[0047] The sliding module adjusting screw 304, as the main adjusting structure, can precisely control and adjust the fit between the sliding module panel 301 and the sliding module main board 302. If the grinding fit between the sliding module panel 301 and the sliding module main board 302 is not good, and the sliding module main board 302 is ground too small, it will be locked and the sliding module panel 301 will not move. If the allowance is too large, there will be a gap between the sliding module panel 301 and the sliding module main board 302, resulting in a lack of precision. In this case, the sliding module adjusting screw 304 can achieve a state of both movement and precision through fine adjustment.

[0048] A fixing block 305 is provided between the sliding module panel 301 and the sliding module main board 302, forming a sealed chamber between the fixing block 305, the sliding module panel 301, the sliding module main board 302, and the adjusting pressure strip 303. Internally, since the fixing block 305 connects to the oil inlet pipe 307, the oil pressure inside the chamber increases after oil is supplied through the oil inlet pipe 307, causing the sliding module panel 301 to slide on the sliding module main board 302. The surface finish of the sliding module panel 301 and the sliding module main board 302 exceeds 0.05 μm, and an oil film is formed after oil is supplied through the oil inlet pipe 307, creating a seal.

[0049] Meanwhile, an oil outlet pipe 308 is provided on the sliding module panel 301 to control the oil pressure in the chamber and facilitate the sliding module panel 301 to return to its rearward position. The entire sealed chamber supplies oil to the sliding module panel 301 and the sliding module main board 302 through oil pressure. There is no leakage in the sealed chamber, which creates internal pressure, causing the sliding module panel 301 and the sliding module main board 302 to float together, reducing friction.

[0050] In this embodiment, after surface finishing, the surface smoothness of the sliding module panel 301 and the sliding module main board 302 reaches 0.05μm, ensuring that the generated oil film will not leak, thus achieving a mechanical sealing effect. Simultaneously, sealing plates 309 are provided on the front and rear sides of the sliding module panel 301. These sealing plates 309 have an L-shaped structure to limit the forward and backward movement distance of the sliding module panel 301.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations (such as quantity, shape, position, etc.) can be made to the technical solutions of the present invention, and these equivalent transformations are all protected by the present invention.

Claims

1. A tap indexing shaft sliding module assembly, characterized in that, Includes a tap positioning and indexing shaft clamping module, a rear fixed center, and a sliding module; The bottom of the tap positioning and indexing shaft clamping module is mounted on the sliding module for moving back and forth in the horizontal direction; the rear fixed center is fixed on the sliding module; the central axis of the tap positioning and indexing shaft clamping module and the central axis of the rear fixed center are on the same straight line; the tap positioning and indexing shaft clamping module is used to clamp the workpiece and then fix it with the rear fixed center to fix the workpiece. The sliding module includes a sliding module panel, a sliding module main board, an adjusting pressure bar, and adjusting screws; The top surface of the sliding module panel is fixed to the tap positioning indexing shaft clamping module by a nut; the sliding module panel is located on the top surface of the sliding module main board, and protrusions are provided on both sides of the sliding module panel; the adjusting pressure strip is provided between the protrusions and the sliding module main board; the adjusting screw is provided on the protrusion for adjusting the gap between it and the adjusting pressure strip; a fixing block is provided between the sliding module panel and the sliding module main board; a sealed chamber is formed between the fixing block, the sliding module panel, the sliding module main board and the adjusting pressure strip; the fixing block is used to connect the oil inlet pipe; after oil is introduced into the oil inlet pipe, the sliding module panel slides on the sliding module main board; the surface finish of the sliding module panel and the sliding module main board exceeds 0.05μm, and after oil is introduced into the oil inlet pipe, an oil film is generated to form a seal.

2. The tap indexing shaft sliding module assembly according to claim 1, characterized in that, The tap positioning and indexing shaft clamping module includes a positioning and indexing shaft, a clamping mechanism, a tap indexing center extension rod, and a tap indexing center; The positioning indexing shaft is coaxially connected to the clamping mechanism; the tap indexing tip extension rod is fixed to the front end of the clamping mechanism; the tap indexing tip is installed on the free end of the tap indexing tip extension rod by welding or screwing, and is made of cemented carbide or diamond.

3. The tap indexing shaft sliding module assembly according to claim 2, characterized in that, The positioning indexing shaft includes a rotating spindle, a main bearing, a direct-drive DD motor servo stator, a motor rotor, and a flange; the direct-drive DD motor servo stator is connected to one end of the main bearing; the other end of the main bearing is connected to the rotating spindle; the motor rotor is installed inside the side wall of the direct-drive DD motor servo stator; a high-precision encoder is provided at the end of the motor rotor; The front end of the rotating spindle is fixed to the clamping mechanism by an adjusting nut; The end of the positioning indexing shaft is provided with an air guide rotary joint; an air passage is formed inside the positioning indexing shaft, and its outlet faces the clamping mechanism.

4. The tap indexing shaft sliding module assembly according to claim 3, characterized in that, The clamping mechanism includes a chuck seat body, a limiting pin, a piston, and an end cap; the end cap is provided at the front end of the chuck seat body; a chamber is formed between the chuck seat body and the end cap for housing a piston that can move back and forth; a spring is provided at the front end of the piston, and an air port is connected to the rear end; the air port is connected to an air passage formed inside the positioning indexing shaft; a chuck is connected to the inner wall of the piston, and they move back and forth together; a limiting pin is provided on the end cap to control the direction of movement of the chuck and prevent the chuck from moving circumferentially.

5. The tap indexing shaft sliding module assembly according to claim 3, characterized in that, A rear positioning bracket is provided on the sliding module, and is distributed at both ends of the sliding module panel; the rear fixed tip is fixed to the rear positioning bracket; the rear positioning bracket is fixed to the sliding module, and a positioning bracket adjustment block is provided on the top of the rear positioning bracket, allowing selection of a suitable height by replacement; the positioning bracket adjustment block has a positioning bracket adjustment screw on the surface facing the tap positioning indexing shaft clamping module, which allows for fine adjustment of the positioning bracket adjustment block in the horizontal direction; the positioning bracket adjustment block is fixed to the entire rear positioning bracket by the positioning bracket adjustment screw; the rear fixed tip passes through the top of the positioning bracket adjustment block, and a tip adjustment screw is provided on the positioning bracket adjustment block to adjust the position of the rear fixed tip in the horizontal and vertical directions.

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