Workpiece feeding and discharging device for batch machining of titanium alloy nuts

Abstract

A workpiece feeding and discharging device for titanium alloy nut batch machining is provided with a material supporting unit and a base unit. The material supporting unit comprises a supporting plate, conversion columns and positioning pins, the supporting plate fixes a plurality of outer sleeve nut workpieces through the conversion columns, the outer sleeve nut workpieces are located above the supporting plate, the positioning pins are fixedly installed on the bottom face of the supporting plate, and the two groups of positioning pins are arranged along the central axis of the supporting plate; the base unit comprises a base, a positioning pin seat and a pneumatic clamping mechanism, the base is communicated with an external high-pressure air source through an air path, a cavity communicated with the air path is further formed in the base, the positioning pin seat and the pneumatic clamping mechanism are assembled in the cavity, the positioning pin seat is matched with a positioning pin of the material supporting unit, and the pneumatic clamping mechanism is matched with the positioning pin of the material supporting unit. And the positioning pins are inserted into the corresponding positioning pin seats and are clamped and fixed through the pneumatic clamping mechanism. Batch feeding and discharging operation of workpieces is achieved, and therefore the purposes of guaranteeing workpiece clamping and positioning precision and product quality and improving work efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a workpiece loading and unloading device for batch processing of titanium alloy nuts without flaring made of titanium alloy. Background Art

[0002] As attached Figure 1 As shown, a non-flared duct sleeve nut 1 for an aircraft hydraulic system is made of titanium alloy and has the characteristics of high strength, high hardness, and light weight. However, when machining the titanium alloy, the titanium alloy has the problems of fast thermal conductivity and easy sticking of the material to the tool, which increases the difficulty of the machining operation and cannot complete the machining process efficiently and quickly. In particular, if the traditional single workpiece loading and unloading method is used, the work efficiency will be further reduced. Utility Model Content

[0003] The utility model provides a workpiece loading and unloading device for batch processing of titanium alloy nuts, which aims to form a supporting unit by carrying a plurality of groups of outer sleeve nut workpieces through a supporting plate, and realize rapid disassembly and assembly of the supporting unit and the base unit through the cooperation of a positioning pin arranged in the supporting unit and a pneumatic clamping mechanism in a base unit, so as to achieve the purpose of ensuring the workpiece clamping positioning accuracy and product quality and improving work efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A workpiece loading and unloading device for batch processing of titanium alloy nuts is provided with a supporting unit and a base unit; the supporting unit comprises a supporting plate, a conversion column and a locating pin, the supporting plate fixes a plurality of outer sleeve nut workpieces through the conversion column, the outer sleeve nut workpieces are located above the supporting plate, and locating pins are fixedly installed on the bottom surface of the supporting plate, the number of the locating pins is not less than two groups, and they are evenly arranged along the central axis of the supporting plate; the base unit comprises a base, a locating pin seat and a pneumatic clamping mechanism, the base is connected to an external high-pressure air source through an air circuit, a cavity which passes through the air circuit is also provided in the base, a locating pin seat and a pneumatic clamping mechanism are arranged in the cavity, the locating pin seat matches the locating pin of the supporting unit, the locating pin of the supporting unit is inserted into the corresponding locating pin seat, and is clamped and fixed by the pneumatic clamping mechanism.

[0006] The workpiece loading and unloading device for batch processing of the above-mentioned titanium alloy nuts, the locating pin seat is a special-shaped sleeve structure, the lower part of which is assembled with the base in an interference fit manner, and the upper part of the locating pin seat is provided with a flange extending outward, and the flange is engaged with the upper end face of the base to form an annular structure between the middle part of the locating pin seat and the inner wall of the base cavity, and a transition conical surface M1 is provided on the side wall of the annular structure.

[0007] The workpiece loading and unloading device for batch processing of the titanium alloy nuts is provided with a conical positioning surface N1 at the upper end of the inner hole of the positioning pin seat.

[0008] The workpiece loading and unloading device for batch processing of titanium alloy nuts, the pneumatic clamping mechanism includes a floating body, a compression spring, a clamping steel ball and a pneumatic switch; the floating body is a double-layer casing, the inner and outer layers of which are closed at the bottom and the upper end is an open structure, the central hole of the floating body is a stepped hole, and a transition conical surface M2 is set between the upper small diameter hole and the lower large diameter hole. The floating body is installed in the annular structure Q between the middle of the positioning pin seat and the inner wall of the base cavity, and can move up and down. When the floating body 2-2 is in the annular structure Q is at the bottom position, its transition conical surface M2 fits with the transition conical surface M1 on the side wall of the annular structure Q; the compression spring is installed in the inner and outer layers of the floating body, and its upper and lower ends respectively contact the top surface of the annular structure between the locating pin seat and the inner wall of the base cavity, and the closed surfaces of the inner and outer bottom layers of the floating body; the clamping steel ball is installed on the middle side wall of the locating pin seat, and a clamping steel ball installation slot is radially arranged on the middle side wall of the locating pin seat; the pneumatic switch is arranged on the air path connecting the base and the external high-pressure air source.

[0009] The workpiece loading and unloading device for batch processing of the above-mentioned titanium alloy nuts, the locating pin is fixedly assembled with the support plate by screws, and a guide conical surface, a clamping conical surface and a positioning conical surface N2 are provided on the outer wall of the locating pin; the guide conical surface is located at the lower part of the locating pin; the clamping conical surface is located above the guide conical surface, and the two are connected by a circular arc transition surface; the positioning conical surface is located at the upper part of the locating pin.

[0010] The workpiece loading and unloading device for batch processing of titanium alloy nuts, the upper end of the conversion column is connected to the outer sleeve nut workpiece through a threaded connection structure, the lower end is connected to the support plate through a threaded connection structure, and an annular limiting boss is arranged in the middle of the conversion column.

[0011] In the workpiece loading and unloading device for batch processing of titanium alloy nuts, the conversion column is also fixedly assembled with the support plate by screws.

[0012] In the workpiece loading and unloading device for batch processing of titanium alloy nuts, a connecting seat is embedded at the bottom of the inner hole of the positioning pin seat, and the base unit is fixed on the base platform of the CNC processing equipment through the connecting seat.

[0013] The utility model provides a workpiece loading and unloading device for batch processing of titanium alloy nuts, which can realize the rapid disassembly and assembly of the support unit and the base unit through the cooperation of the positioning pins set in the support unit and the positioning pin seats in the base unit and the pneumatic clamping mechanism; the support unit of the utility model is a universal component, which can be configured with at least two groups, each group of support units can simultaneously install a number of outer sleeve nut workpieces, and perform machining operations on them one by one through numerical control equipment. During this process, the operator can install the workpiece on another group of support units. When the workpieces in the previous group of support units are processed, the support unit can be taken out as a whole, replaced with another group of support units, and the machining operation can be continued. It can be seen that the utility model realizes the batch loading and unloading operation of the workpiece through the rapid disassembly and assembly of the support unit and the base unit, thereby achieving the purpose of ensuring the workpiece clamping positioning accuracy and product quality and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the outer sleeve nut workpiece structure;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 is a schematic diagram of the cross-sectional structure of the base unit;

[0017] Figure 4 yes Figure 3 The enlarged view of the structure at position Ⅰ in the middle;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the floating body;

[0019] Figure 6 1. It is a schematic diagram of the cross-sectional structure of the positioning pin seat;

[0020] Figure 7 1 is a schematic diagram of the cross-sectional structure of the support unit;

[0021] Figure 8 is a schematic diagram of the cross-sectional structure of the positioning pin;

[0022] Fig. 9 is a schematic diagram of the cross-sectional structure of the conversion column;

[0023] Figures 10 to 12 It is a schematic diagram of the rapid assembly process of the support unit and the base unit.

[0024] Explanation of the symbols in the figure:

[0025] 1 is the outer nut workpiece

[0026] 2 is the base unit

[0027] 2-1 is the base, 2-1-1 is the air path; 2-2 is the floating body, 2-2-1 is the closed surface; 2-3 is the compression spring; 2-4 is the positioning pin seat, 2-4-1 is the top surface of the annular structure, 2-4-2 is the clamping steel ball installation slot, 2-4-3 is the flange; 2-5 is the connecting seat; 2-6 is the clamping steel ball;

[0028] 3 is the support unit

[0029] 3-1 is a support plate; 3-2 is a positioning pin, 3-2-1 is an annular limiting boss, 3-2-2 is a guide conical surface; 3-3 is a conversion column, 3-3-1 is an annular limiting boss, and 3-4 is a screw;

[0030] 4 is a pneumatic switch. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Referring to FIG. 1 , a non-flared duct sleeve nut 1 for an aircraft hydraulic system is made of titanium alloy and has the characteristics of high strength, high hardness, and light weight. However, when machining the titanium alloy, the titanium alloy has the problems of fast heat conduction and easy sticking of the material to the tool, which increases the difficulty of the machining operation and cannot complete the machining process efficiently and quickly. In particular, if the traditional single workpiece loading and unloading method is adopted, the work efficiency will be further reduced.

[0033] See also Figure 2 , Figure 3 , Figure 7 The utility model provides a workpiece loading and unloading device for batch processing of titanium alloy nuts, which is provided with a supporting unit 3 and a base unit 2; the supporting unit 3 includes a supporting plate 3-1, a conversion column 3-3 and a positioning pin 3-2, the supporting plate 3-1 fixes a plurality of outer sleeve nut workpieces 1 through the conversion column 3-3, the outer sleeve nut workpiece 1 is located above the supporting plate 3-1, and the positioning pin 3-2 is fixedly installed on the bottom surface of the supporting plate 3-1, and the number of the positioning pins 3-2 is preferably two groups, which are evenly arranged along the central axis of the supporting plate 3-1; The base unit 2 includes a base 2-1, a positioning pin seat 2-4 and a pneumatic clamping mechanism. The base 2-1 is connected to an external high-pressure gas source through an air circuit 2-1-1. A cavity that passes through the air circuit 2-1-1 is also provided in the base 2-1. The positioning pin seat 2-4 and the pneumatic clamping mechanism are installed in the cavity. The positioning pin seat 2-4 matches the positioning pin 3-2 of the support unit 3. The positioning pin 3-2 of the support unit 3 is inserted into the corresponding positioning pin seat 2-4 and is clamped and fixed by the pneumatic clamping mechanism.

[0034] See also Figure 3 , Figure 4 , Figure 6The workpiece loading and unloading device for batch processing of titanium alloy nuts described in the utility model has a locating pin seat 2-4 that is a special-shaped sleeve structure. The lower part of the locating pin seat 2-4 is assembled with the base 2-1 in an interference fit manner. The upper part of the locating pin seat 2-4 is provided with a flange 2-4-3 extending outward, and the flange 2-4-3 is buckled with the upper end surface of the base 2-1. An annular structure Q is formed between the middle part of the locating pin seat 2-4 and the inner wall of the base cavity. A transition conical surface M1 is provided on the side wall of the annular structure Q, and a conical locating surface N1 is provided at the upper end of the inner hole of the locating pin seat 2-4.

[0035] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 The pneumatic clamping mechanism of the workpiece loading and unloading device for batch processing of titanium alloy nuts described in the utility model includes a floating body 2-2, a compression spring 2-3, a clamping steel ball 2-6 and a pneumatic switch 4; the floating body 2-2 is a double-layer casing, the bottom of the inner and outer layers are closed, and the upper end is an open structure, the central hole of the floating body is a stepped hole, and a transition conical surface M2 is set between the upper small diameter hole and the lower large diameter hole. The floating body 2-2 is installed in the annular structure Q between the middle of the positioning pin seat 2-4 and the inner wall of the base cavity, and can move up and down. When the floating body 2-2 is at the bottom position of the annular structure Q, its transition conical surface M2 is aligned with the transition conical surface on the side wall of the annular structure Q. The conical surface M1 fits; the compression spring 2-3 is installed in the inner and outer layers of the floating body 2-2, and its upper and lower ends respectively contact the top surface 2-4-1 of the annular structure between the locating pin seat and the inner wall of the base cavity, and the closed surface 2-2-1 of the bottom of the inner and outer layers of the floating body 2-2; the clamping steel ball 2-6 is installed on the middle side wall of the locating pin seat 2-4, and a clamping steel ball mounting slot 2-4-2 is radially arranged on the middle side wall of the locating pin seat, which can provide space for the clamping steel ball 2-6 to move radially along the locating pin seat 2-4 through the up and down movement of the floating body 2-2; the pneumatic switch 4 is arranged on the air path 2-1-1 connecting the base 2-1 with an external high-pressure air source.

[0036] See also Figure 7 , Figure 8 , Fig.10 , Fig.11 , Fig.12In the workpiece loading and unloading device for batch processing of titanium alloy nuts described in the utility model, in its support unit 3, the positioning pin 3-2 is fixedly assembled with the support plate 3-1 by means of a screw 3-4, and a guide conical surface 3-2-2, a clamping conical surface 3-2-1 and a positioning conical surface N2 are provided on the outer wall of the positioning pin 3-2; the guide conical surface 3-2-2 is located at the lower part of the positioning pin 3-2, and when the positioning pin 3-2 is inserted into the positioning pin seat 2-4, the clamping steel ball 2-6 is squeezed outward by the guide conical surface 3-2-2 Movement; the clamping conical surface 3-2-1 is located above the guiding conical surface 3-2-2, and the two are connected by an arc transition surface. After the locating pin 3-2 is inserted into the locating pin seat 2-4, the pneumatic switch 4 is closed, and the floating body 2-2 moves downward, pushing the clamping steel ball 2-6 to press the clamping conical surface 3-2-1; the positioning conical surface N2 is located on the upper part of the locating pin 3-2. After the locating pin 3-2 is inserted into the locating pin seat 2-4, the positioning conical surface N2 fits with the conical positioning surface N1 at the upper end of the inner hole of the locating pin seat 2-4.

[0037] See also Figure 7 , Fig. 9 In the workpiece loading and unloading device for batch processing of titanium alloy nuts described in the utility model, in its supporting unit 3, the upper end of the conversion column 3-3 is connected to the outer sleeve nut workpiece 1 through a threaded connection structure, and the lower end is connected to the support plate 3-1 through a threaded connection structure, and an annular limiting boss 3-3-1 is arranged in the middle of the conversion column 3-3; the conversion column 3-3 is also fixedly assembled with the support plate 3-1 by screws 3-4.

[0038] See also Figures 10 to 12 The utility model provides a workpiece loading and unloading device for batch processing of titanium alloy nuts, which is fixedly assembled with the base platform of the CNC processing equipment through the connecting seat 2-5 in the base unit 2, and the positioning pin 3-2 set in the supporting unit 3 cooperates with the positioning pin seat 2-4 in the base unit 2 and the pneumatic clamping mechanism to realize the rapid disassembly and assembly of the supporting unit 3 and the base unit 2; the supporting unit 3 of the utility model is a universal component and can be configured with at least two groups. Each group of supporting units can simultaneously install several outer sleeve nut workpieces 1, which are machined one by one by CNC equipment. During this process, the operator can install the workpiece on another group of supporting units. When the workpiece in the previous group of supporting units is processed, the supporting unit 3 can be taken out as a whole, replaced with another group of supporting units, and the machining operation can be continued.

Claims

1. A workpiece loading and unloading device for batch processing of titanium alloy nuts, characterized in that: A support unit (3) and a base unit (2) are provided; the support unit (3) comprises a support plate (3-1), a conversion column (3-3) and a positioning pin (3-2); the support plate (3-1) fixes a plurality of outer sleeve nut workpieces (1) via the conversion column (3-3); the outer sleeve nut workpieces (1) are located above the support plate (3-1); the positioning pins (3-2) are fixedly installed on the bottom surface of the support plate (3-1); the number of the positioning pins (3-2) is not less than two groups and is evenly arranged along the central axis of the support plate (3-1); the base unit (2) comprises a base ( 2-1), a positioning pin seat (2-4) and a pneumatic clamping mechanism, the base (2-1) is connected to an external high-pressure gas source through an air path (2-1-1), a cavity that passes through the air path (2-1-1) is also provided in the base (2-1), a positioning pin seat (2-4) and a pneumatic clamping mechanism are arranged in the cavity, the positioning pin seat (2-4) matches the positioning pin (3-2) of the support unit (3), the positioning pin (3-2) of the support unit (3) is inserted into the corresponding positioning pin seat (2-4), and is clamped and fixed by the pneumatic clamping mechanism.

2. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 1 is characterized in that: The positioning pin seat (2-4) is a special-shaped sleeve structure, the lower part of which is assembled with the base (2-1) in an interference fit manner, the upper part of the positioning pin seat (2-4) is provided with a flange (2-4-3) extending outward, the flange (2-4-3) is buckled with the upper end surface of the base (2-1), and an annular structure Q is formed between the middle part of the positioning pin seat (2-4) and the inner wall of the base cavity, and a transition conical surface M1 is provided on the side wall of the annular structure Q.

3. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 2 is characterized in that: A conical positioning surface N1 is provided at the upper end of the inner hole of the positioning pin seat (2-4).

4. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 3 is characterized in that: The pneumatic clamping mechanism comprises a floating body (2-2), a compression spring (2-3), a clamping steel ball (2-6) and a pneumatic switch (4); the floating body (2-2) is a double-layer casing, the inner and outer layers of which are closed at the bottom and open at the top; the central hole of the floating body is a stepped hole, and a transition conical surface M2 is provided between the upper small-diameter hole and the lower large-diameter hole; the floating body (2-2) is mounted in an annular structure Q between the middle of the positioning pin seat (2-4) and the inner wall of the base cavity, and can move up and down; when the floating body (2-2) is at the bottom of the annular structure Q, its transition conical surface M2 is in contact with the side wall of the annular structure Q. The upper transition conical surface M1 is fitted; the compression spring (2-3) is installed in the inner and outer layers of the floating body (2-2), and its upper and lower ends respectively contact the top surface (2-4-1) of the annular structure between the positioning pin seat and the inner wall of the base cavity, and the closed surface (2-2-1) of the inner and outer bottom layers of the floating body (2-2); the clamping steel ball (2-6) is installed on the middle side wall of the positioning pin seat (2-4), and a clamping steel ball installation slot hole (2-4-2) is radially arranged on the middle side wall of the positioning pin seat; the pneumatic switch (4) is arranged on the air path (2-1-1) that connects the base (2-1) with an external high-pressure air source.

5. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 4 is characterized in that: The positioning pin (3-2) is fixedly assembled with the support plate (3-1) by means of screws (3-4); a guide conical surface (3-2-2), a clamping conical surface (3-2-1) and a positioning conical surface N2 are provided on the outer wall of the positioning pin (3-2); the guide conical surface (3-2-2) is located at the lower part of the positioning pin (3-2); the clamping conical surface (3-2-1) is located above the guide conical surface (3-2-2), and the two are connected by means of a circular arc transition surface; the positioning conical surface N2 is located at the upper part of the positioning pin (3-2).

6. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to any one of claims 1 to 5, characterized in that: The upper end of the conversion column (3-3) is connected to the outer sleeve nut workpiece (1) through a threaded connection structure, and the lower end is connected to the support plate (3-1) through a threaded connection structure. An annular limiting boss (3-3-1) is provided in the middle of the conversion column (3-3).

7. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 6 is characterized in that: The conversion column (3-3) is also fixedly assembled with the support plate (3-1) via screws (3-4).

8. The workpiece loading and unloading device for batch processing of titanium alloy nuts according to claim 7 is characterized in that: A connecting seat (2-5) is embedded in the bottom of the inner hole of the positioning pin seat (2-4), and the base unit (2) is fixed on the base platform of the numerical control processing equipment through the connecting seat (2-5).

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