A type of sheet metal processing fixture

Abstract

This utility model provides a fixture for machining sheet metal parts, including a fixture body, a clamping and fixing kit, and a connecting and mounting component for connecting to a machine tool table. The fixture body is characterized by having at least one clamping and fixing kit, with each kit forming a workstation. The clamping and fixing kit includes a positioning support plate, a pressure plate assembly, and a positioning fixture assembly. The positioning support plate is located on the front of the fixture body to support the workpiece; the pressure plate assembly and the positioning fixture assembly are located on one side of the positioning support plate to clamp and fix the workpiece to the positioning support plate; a fixture cutout portion I and a positioning support plate cutout portion are respectively provided on the fixture body and the positioning support plate corresponding to the holes on the back of the workpiece. This invention solves the problem of poor machining accuracy of sheet metal parts due to secondary clamping and positioning errors during machining, thereby significantly improving the machining accuracy and efficiency of sheet metal parts. It has a simple structure, is easy to manufacture, and has a low manufacturing cost.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling, and in particular to a tooling for processing sheet metal. Background Technology

[0002] In the machining of plate-type parts, the machining of the top surface, bottom surface, and the holes on their respective planes usually requires two operations. During the transfer of parts, the parts need to be positioned and clamped a second time, and the resulting clamping and positioning errors will affect the machining accuracy of the parts.

[0003] For example, when machining the bow plate on a carding machine, it is necessary to machine holes on the front and back of the bow plate, and also to machine the outer circle of one end of the bow plate.

[0004] How to design a machining fixture for sheet metal parts to solve the problem of poor machining accuracy caused by secondary clamping and positioning errors during the machining process of existing sheet metal parts, thereby significantly improving the machining accuracy and efficiency of sheet metal parts, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a plate processing fixture that solves the problem of poor processing accuracy of existing plate parts (especially the bow plate of a carding machine) due to secondary clamping and positioning errors during machining, thereby significantly improving the processing accuracy and efficiency of plate parts.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A plate machining fixture includes a fixture body, a clamping and fixing kit, and a connecting and mounting component for connecting to a machine tool table. The fixture body is characterized by having at least one clamping and fixing kit, each kit forming a workstation on the fixture body. Each clamping and fixing kit includes a positioning support plate, a pressure plate assembly, and a positioning clamping assembly. The positioning support plate is positioned on the front of the fixture body to support the workpiece. The pressure plate assembly and the positioning clamping assembly are positioned on one side of the positioning support plate to clamp and fix the workpiece to the positioning support plate. A fixture cutout portion I and a positioning support plate cutout portion are respectively provided on the fixture body and the positioning support plate corresponding to the holes on the back of the workpiece.

[0008] Improvement to the above technical solution: The workpiece is a carding machine bow plate, and the positioning support plate is an arc plate with the same arc shape as the carding machine bow plate. A recessed tooling cutout part II is provided on one side edge of the tooling body corresponding to one end of the back of the carding machine bow plate, so that one end of the carding machine bow plate is located in the tooling cutout part II.

[0009] Further improvement to the above technical solution: The clamping and fixing kit also includes a rotary plunger positioning assembly, which is installed on the back of the tooling body and near one end of the positioning support plate to stop one end of the workpiece.

[0010] Further improvements to the above technical solution: The tooling body includes three workstations formed by three sets of clamping and fixing kits. Each workstation has a tooling cutout part I and a tooling cutout part II. The positioning support plates in each workstation are arranged horizontally, and the positioning support plates in the three workstations are evenly arranged vertically.

[0011] Further improvements to the above technical solution: The tooling body is a square metal plate, the four corners of the tooling body are chamfered, and a lifting eye screw is provided at each of the four corners of the tooling body.

[0012] Further improvement to the above technical solution: Two tooling reinforcing ribs are vertically arranged on the back of the tooling body.

[0013] Further improvements to the above technical solution: The pressure plate assembly includes a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. A pressure plate is provided at one end of the flange of the flanged hexagonal nut, and a copper pressure block is provided on the bottom surface of the pressure plate. A screw hole is formed in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. A nut from the flanged hexagonal nut is fitted onto the upper end of the clamping screw, and a hexagonal nut is fitted onto the lower end of the clamping screw. A supporting screw is provided on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted onto the supporting screw. The positioning fixture assembly includes a positioning seat and a positioning pin. An installation hole is formed on the positioning seat, and a protrusion is provided on the top surface of the positioning seat. An insertion hole is provided on the protrusion, and the positioning pin is inserted into the insertion hole. The positioning seat is fixed to the front surface of the tooling body by screws, and the pressure plate assembly is mounted on the positioning seat.

[0014] Further improvements to the above technical solution: The rotary plunger positioning assembly includes: a handle, a sliding seat, a cylindrical pin, a base, a spring, a lubricating bearing sleeve, a positioning pin, and a movable shaft. One end of the handle is threaded to the sliding seat. The movable shaft passes through the sliding seat, and one end of the movable shaft is hinged to the sliding seat via a cylindrical pin. The movable shaft also passes through the base. One end of the base is provided with a notched disc. The other end of the movable shaft is connected to one end of the positioning pin. A spring is fitted over the movable shaft, and a lubricating bearing sleeve is fitted over the positioning pin.

[0015] Compared with the prior art, this utility model has the following advantages and positive effects:

[0016] 1. Improved machining accuracy and efficiency: By applying the tooling of this invention, the machining process that originally required two steps can be completed in a single clamping operation, avoiding secondary clamping errors and improving machining accuracy. At the same time, reducing two steps to one step also reduces the labor intensity of workers and increases machining efficiency.

[0017] 2. Reduce production costs: By applying the tooling of this utility model, one set of tooling can be reduced, and the amount of machine tool space required can be reduced, thus significantly reducing production costs. Attached Figure Description

[0018] Figure 1 This is a front view of a plate processing fixture of the present invention installed on a machine tool worktable;

[0019] Figure 2 This is a front view of a plate processing fixture of the present invention after clamping the bow plate;

[0020] Figure 3 This is a rear view of a plate processing fixture of the present invention after clamping the bow plate;

[0021] Figure 4 This is an enlarged view of the pressure plate assembly in a plate processing tooling according to this utility model;

[0022] Figure 5 This is a perspective view of a positioning fixture assembly in a sheet metal processing tooling according to the present invention;

[0023] Figure 6 This is a front view of a rotary plunger positioning assembly in a plate processing fixture according to the present invention;

[0024] Figure 7 This is a cross-sectional view along the axis of a rotary plunger positioning assembly in a plate processing fixture according to the present invention.

[0025] In the diagram: 1. Fixture body; 2. Positioning support plate; 3. Pressure plate assembly; 3.1. Hexagonal nut with flange; 3.2. Pressure plate; 3.3. Copper pressure block; 3.4. Clamping screw; 3.5. Hexagonal nut; 3.6. Support screw; 4. Positioning fixture assembly; 4.1. Positioning seat; 4.2. Positioning pin; 5. Eye bolt; 6. Rotary plunger positioning assembly; 6.1. Handle; 6.2. Sliding seat; 6.3. Cylindrical pin; 6.4. Base; 6.5. Spring; 6.6. Movable shaft; 6.7. Positioning pin shaft; 6.8. Lubricating bearing sleeve; 7. Fixture cutout part I; 8. Fixture cutout part II; 9. Fixture reinforcing rib plate; 10. Carding machine bow plate; 11. Machine tool worktable. Detailed Implementation

[0026] See Figures 1-3This utility model discloses an embodiment of a plate machining fixture, comprising a fixture body 1, a clamping and fixing kit, and a connecting and mounting component for connecting to a machine tool worktable 11. The fixture body 1 is equipped with at least one clamping and fixing kit, and each set of the clamping and fixing kit forms a workstation on the fixture body 1. The clamping and fixing kit includes a positioning support plate 2, a pressure plate assembly 3, and a positioning clamping fixture assembly 4. The positioning support plate 2 is provided on the front side of the fixture body 1 for supporting the workpiece; the pressure plate assembly 3 and the positioning clamping fixture assembly 4 are provided on one side of the positioning support plate 2 for clamping and fixing the workpiece attached to the positioning support plate 2; a fixture cutout portion I 7 and a positioning support plate cutout portion are respectively provided on the fixture body 1 and the positioning support plate 2 corresponding to the holes on the back side of the workpiece.

[0027] Furthermore, the aforementioned workpiece is a carding machine bow plate 10, and the aforementioned positioning support plate 2 is an arc-shaped plate that matches the arc shape of the carding machine bow plate 10. A recessed tooling cutout part II is provided on one side edge of the tooling body 1, corresponding to one end of the back of the bow plate 10, so that one end of the carding machine bow plate is located in the tooling cutout part II.

[0028] Furthermore, the aforementioned clamping and fixing kit also includes a rotary plunger positioning assembly 6, which is installed on the back of the tooling body 1 and near one end of the positioning support plate 2, for stopping one end of the workpiece (carding machine bow plate 10).

[0029] Furthermore, the aforementioned tooling body 1 includes 3 workstations formed by 3 sets of clamping and fixing kits. Each tooling body 1 corresponding to each workstation is provided with a tooling cutout part I 7 and a tooling cutout part II 8. The positioning support plate 2 in each workstation is arranged horizontally, and the positioning support plates 2 in the 3 workstations are evenly arranged vertically.

[0030] Furthermore, the aforementioned tooling body 1 is a square metal plate with chamfered corners at its four corners, and a lifting eye screw 5 is provided at each of the four corners of the tooling body 1.

[0031] To increase the strength of the tooling body 1, two tooling reinforcing ribs 9 are vertically arranged on the back of the tooling body 1.

[0032] Specifically: See Figure 4The aforementioned pressure plate assembly 3 includes: a flanged hexagonal nut 3.1, a pressure plate 3.2, a copper pressure block 3.3, a clamping screw 3.4, a hexagonal nut 3.5, and a support screw 3.6. A pressure plate 3.2 is installed at one end of the flange of the flanged hexagonal nut 3.1, and a copper pressure block 3.3 is installed on the bottom surface of the pressure plate 3.2. A screw hole is opened in the middle of the flange of the flanged hexagonal nut 3.1, and a clamping screw 3.4 is inserted into the screw hole. The upper end of the clamping screw 3.4 is fitted with the nut from the flanged hexagonal nut 3.1, and the lower end of the clamping screw 3.4 is fitted with a hexagonal nut 3.5. A support screw 3.6 is installed on the bottom surface of the flange of the flanged hexagonal nut 3.1, and a hexagonal nut 3.5 is fitted on the support screw 3.6.

[0033] See Figure 5 The aforementioned positioning fixture assembly 4 includes a positioning base 4.1 and a positioning pin 4.2. The positioning base 4.1 has mounting holes, a raised strip on its top surface, and an insertion hole on the raised strip. The positioning pin 4.2 is inserted into the insertion hole. The positioning base 4.1 is fixed to the front of the tooling body 1 by screws, and the aforementioned pressure plate assembly 3 is mounted on the positioning base 4.1.

[0034] See Figure 6 , Figure 7 The aforementioned rotary plunger positioning assembly 6 includes: a handle 6.1, a sliding seat 6.2, a cylindrical pin 6.3, a base 6.4, a spring 6.5, a lubricating bearing sleeve 6.8, a positioning pin 6.7, and a movable shaft 6.6. One end of the handle 6.1 is threaded externally, and the sliding seat 6.2 has an internally threaded hole. The handle 6.1 is threadedly connected to the sliding seat 6.2. The movable shaft 6.6 passes through the sliding seat 6.2, and one end of the movable shaft 6.6 is hinged to the sliding seat 6.2 via the cylindrical pin 6.3. The movable shaft 6.6 also passes through the base 6.4, one end of which has a notched disc. The other end of the movable shaft 6.6 is connected to one end of the positioning pin 6.7. A spring 6.5 is fitted over the movable shaft 6.6, and a lubricating bearing sleeve 6.8 is fitted over the positioning pin 6.7. When installing a workpiece, the handle 6.1 is turned, causing the positioning pin 6.7 in the rotary plunger positioning assembly 6 to extend, providing lateral positioning for the workpiece. When not in use, move handle 6.1 to retract the positioning pin 6.7.

[0035] The aforementioned positioning support plate 2 is an integral structure made of metal material. The width of the positioning support plate 2 is 40-60mm and the length is 700-800mm.

[0036] In use, this utility model discloses a plate processing fixture. The workpiece (carding machine bow plate 10) is positioned by the positioning support plate 2, the positioning clamp assembly 4, and the rotating plunger positioning assembly 6, and then clamped by the pressure plate assembly 3. The back of the workpiece (carding machine bow plate 10) is cleared by the fixture's cutout parts I 7 and II 8, allowing the machining of the back hole system to be completed by rotating the machine tool fixture table 11 180°. This achieves a single setup to complete machining operations that previously required two steps, significantly improving machining accuracy and efficiency, and effectively reducing manufacturing costs.

[0037] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A sheet metal machining fixture, comprising a fixture body, a clamping and fixing kit, and a connecting and mounting component for connection to a machine tool worktable, characterized in that, The tooling body is equipped with at least one set of clamping and fixing kits. Each set of clamping and fixing kits is set on the tooling body to form a station. The clamping and fixing kit includes a positioning support plate, a pressure plate assembly, and a positioning fixture assembly. The positioning support plate is set on the front of the tooling body for supporting the workpiece. The pressure plate assembly and the positioning fixture assembly are set on one side of the positioning support plate for clamping and fixing the workpiece attached to the positioning support plate. The tooling cutout part I and the positioning support plate cutout part are respectively set on the tooling body and the positioning support plate corresponding to the hole system on the back of the workpiece.

2. The plate processing fixture according to claim 1, characterized in that, The workpiece is a carding machine bow plate, and the positioning support plate is an arc plate with the same arc shape as the carding machine bow plate. A recessed tooling cutout part II is provided on one side edge of the tooling body corresponding to one end of the back of the carding machine bow plate, so that one end of the carding machine bow plate is located in the tooling cutout part II.

3. The sheet metal processing fixture according to claim 2, characterized in that, The clamping and fixing kit also includes a rotary plunger positioning assembly, which is installed on the back of the tooling body and near one end of the positioning support plate to stop one end of the workpiece.

4. The plate processing fixture according to claim 2 or 3, characterized in that, The tooling body includes three workstations formed by three sets of clamping and fixing kits. Each workstation has a tooling cutout part I and a tooling cutout part II. The positioning support plates in each workstation are arranged horizontally, and the positioning support plates in the three workstations are evenly arranged vertically.

5. The sheet metal processing fixture according to any one of claims 1-3, characterized in that, The fixture body is a square metal plate. Two fixture reinforcing ribs are vertically arranged on the back of the fixture body. The four corners of the fixture body are chamfered, and a lifting eye screw is provided at each of the four corners of the fixture body.

6. The sheet metal processing fixture according to claim 4, characterized in that, The fixture body is a square metal plate. Two fixture reinforcing ribs are vertically arranged on the back of the fixture body. The four corners of the fixture body are chamfered, and a lifting eye screw is provided at each of the four corners of the fixture body.

7. The plate processing fixture according to claim 1 or 2, characterized in that, The pressure plate assembly includes a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. A pressure plate is installed at one end of the flange of the flanged hexagonal nut, and a copper pressure block is installed on the bottom surface of the pressure plate. A screw hole is formed in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. A nut from the flanged hexagonal nut is fitted onto the upper end of the clamping screw, and a hexagonal nut is fitted onto the lower end of the clamping screw. A supporting screw is installed on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted onto the supporting screw. The positioning fixture assembly includes a positioning seat and a positioning pin. An installation hole is formed on the positioning seat, and a protrusion is provided on the top surface of the positioning seat. An insertion hole is provided on the protrusion, and the positioning pin is inserted into the insertion hole. The positioning seat is fixed to the front surface of the tooling body by screws, and the pressure plate assembly is installed on the positioning seat.

8. The sheet metal processing fixture according to claim 3, characterized in that, The pressure plate assembly includes a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. A pressure plate is installed at one end of the flange of the flanged hexagonal nut, and a copper pressure block is installed on the bottom surface of the pressure plate. A screw hole is formed in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. A nut from the flanged hexagonal nut is fitted onto the upper end of the clamping screw, and a hexagonal nut is fitted onto the lower end of the clamping screw. A supporting screw is installed on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted onto the supporting screw. The positioning fixture assembly includes a positioning seat and a positioning pin. An installation hole is formed on the positioning seat, and a protrusion is provided on the top surface of the positioning seat. An insertion hole is provided on the protrusion, and the positioning pin is inserted into the insertion hole. The positioning seat is fixed to the front surface of the tooling body by screws, and the pressure plate assembly is installed on the positioning seat.

9. The sheet metal processing fixture according to claim 3, characterized in that, The rotary plunger positioning assembly includes: a handle, a sliding seat, a cylindrical pin, a base, a spring, a lubricating bearing sleeve, a positioning pin, and a movable shaft. One end of the handle is threaded to the sliding seat. The movable shaft passes through the sliding seat, and one end of the movable shaft is hinged to the sliding seat via a cylindrical pin. The movable shaft also passes through the base. One end of the base is provided with a notched disc. The other end of the movable shaft is connected to one end of the positioning pin. A spring is fitted over the movable shaft, and a lubricating bearing sleeve is fitted over the positioning pin.

10. The sheet metal processing fixture according to claim 8, characterized in that, The rotary plunger positioning assembly includes: a handle, a sliding seat, a cylindrical pin, a base, a spring, a lubricating bearing sleeve, a positioning pin, and a movable shaft. One end of the handle is threaded to the sliding seat. The movable shaft passes through the sliding seat, and one end of the movable shaft is hinged to the sliding seat via a cylindrical pin. The movable shaft also passes through the base. One end of the base is provided with a notched disc. The other end of the movable shaft is connected to one end of the positioning pin. A spring is fitted over the movable shaft, and a lubricating bearing sleeve is fitted over the positioning pin.

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