Square workpiece tool clamp

Abstract

The utility model discloses a square workpiece tool clamp. The square workpiece tool clamp comprises a base and a regular pentagonal prism-shaped supporting body, fasteners are installed at the two ends of the base, and a positioning groove is formed in the top of the base. The supporting body is provided with an inner cavity, five clamping grooves are formed in the side face of the supporting body, and an auxiliary fixing mechanism is arranged on one side of each clamping groove. According to the square workpiece tool clamp, the base and the supporting body of the pentagonal prism structure are arranged, the multiple clamping grooves are symmetrically formed in the supporting body, the square workpiece is positioned through the clamping grooves, the workpiece is preliminarily fixed through the auxiliary fixing mechanism, and the workpiece is fixed in the clamping grooves to be machined according to the negative pressure suction principle; and when the clamping groove cannot meet the machining requirement, other clamping grooves can be conveniently used for continuing operation, the service life of the clamp can be greatly prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a tooling fixture for square workpieces. Background Art

[0002] In the machining industry, milling is a commonly used machining method. During machining operations, the workpiece needs to be fixed, and this is when a fixture is needed.

[0003] The fixture used in conventional milling processing has only one clamping surface, which fixes the workpiece on the clamping surface and then processes it. However, due to repeated disassembly and assembly of the workpiece, the accuracy of the clamping surface continues to decline due to wear and bumps. When the accuracy of the clamping surface cannot meet the processing accuracy requirements, the fixture will be scrapped and a new fixture needs to be replaced. Therefore, when processing in large quantities, multiple sets of fixtures need to be prepared for replacement, which is costly.

[0004] Therefore, it is necessary to provide a square workpiece fixture to solve the above technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a square workpiece fixture that can increase the service life of the fixture and reduce the cost of use.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] The square workpiece fixture comprises: a base and a regular pentagonal prism-shaped support body, the support body is provided with an inner cavity, fasteners are installed at both ends of the base, the fasteners fix the support body on the base, a V-shaped positioning groove is provided on the top of the base, the two inclined surfaces of the positioning groove fit into the two adjacent downward surfaces of the support body, thereby positioning the support body, the side surface of the support body is composed of five planes, all of which are provided with square clamping grooves, one side of the clamping groove is provided with an auxiliary fixing mechanism, the clamping groove is provided with an air vent connected to the inner cavity of the support body, and support tubes are installed at both ends of the support body, and air inlet and outlet pipes are installed on the support tubes, the air inlet and outlet pipes are connected to the inner cavity, and the two air inlet and outlet pipes are respectively connected to the exhaust device and the air intake device, and the air in the inner cavity of the support body is extracted or discharged into the inner cavity of the support body through the exhaust device or the air intake device, thereby making the inner cavity of the support body negative pressure or positive pressure, and in the unused clamping groove, the air vent is blocked with a sealing bolt to prevent air leakage.

[0008] Preferably, the auxiliary fixing mechanism includes an installation groove opened on the side of the clamping groove, a top block is installed in the installation groove, and a driving component is provided on one side of the top block. The driving component can use elastic force or other rigid force to drive the top block to slide along the installation groove.

[0009] Preferably, the mounting groove is L-shaped, and the driving assembly includes a threaded groove opened on the outside of the mounting groove, an adjusting screw is installed in the threaded groove, and an insert plate is installed on the adjusting screw. The bottom end of the insert plate is inserted into the mounting groove and does not rotate with the adjusting screw. A mounting hole and an extrusion bevel are opened on the insert plate, the adjusting screw passes through the mounting hole, and the extrusion bevel contacts the side of the top block.

[0010] Preferably, a return spring is sleeved on the adjusting screw, and two ends of the return spring are in contact with the support body and the inserting plate respectively.

[0011] Preferably, a reverse bevel is provided on one side of the top block, and the reverse bevel is fitted with the extrusion bevel.

[0012] Preferably, a gasket is installed on one side of the top block, and the gasket can be made of a relatively soft material such as copper.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The utility model sets a base and a pentagonal prism structure support body, and symmetrically sets a plurality of clamping grooves on the support body. The clamping grooves are used to position the square workpiece, and the auxiliary fixing mechanism is used to preliminarily fix the workpiece. The workpiece is fixed in the clamping groove for processing by using the negative pressure suction principle, and the workpiece can be conveniently removed. When the clamping groove cannot meet the processing needs, other clamping grooves can be conveniently used to continue the operation, which can greatly improve the service life of the fixture and reduce the cost of use;

[0015] (2) The present invention can conveniently perform preliminary fixation of the workpiece by providing the mounting groove, the top block and the driving assembly;

[0016] (3) The utility model can conveniently drive the top block to move by providing a driving assembly including a threaded groove, a plug plate, an adjusting screw, and an extrusion slope;

[0017] (4) The present invention can facilitate the disengagement of the extrusion slope from the top block by installing a reset spring on the adjusting screw, thereby further releasing the fixing effect on the workpiece in the clamping groove;

[0018] (5) The utility model provides a reverse slope on one side of the top block, which helps to reduce wear and increase the service life of the top block and the insert plate;

[0019] (6) The utility model is beneficial to reducing the damage degree of the workpiece surface and improving product quality by installing a gasket on one side of the top block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the square workpiece fixture provided by the utility model;

[0021] Figure 2 for Figure 1 The schematic diagram of the structure of the base in the square workpiece fixture shown;

[0022] Figure 3 for Figure 1 The structural diagram of the support body in the square workpiece fixture shown;

[0023] Figure 4 for Figure 1 A schematic cross-sectional view of the support body in the square workpiece fixture shown;

[0024] Figure 5 for Figure 1 The schematic diagram of the structure of the mounting slot in the square workpiece fixture shown;

[0025] Figure 6 for Figure 1 The schematic diagram of the structure of the top block in the square workpiece fixture shown;

[0026] Figure 7 for Figure 1 The schematic diagram of the structure of the insert plate in the square workpiece fixture is shown.

[0027] Among them, the names corresponding to the figure marks are: 1-base, 2-support body, 3-fastener, 4-positioning groove, 5-clamping groove, 6-support tube, 7-inlet and outlet pipes, 8-air vent, 9-arc groove, 10-mounting groove, 11-top block, 12-thread groove, 13-insert plate, 14-adjusting screw, 15-sealing bolt, 16-reset spring, 17-reverse slope, 18-extrusion slope, 19-mounting hole, 20-gasket. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0029] Example 1:

[0030] like Figure 1-7As shown, the square workpiece fixture provided by the utility model includes: a base 1 and a regular pentagonal prism-shaped support body 2, the support body 2 is provided with an inner cavity, fasteners 3 are installed at both ends of the base 1, the fasteners 3 fix the support body 2 on the base 1, a V-shaped positioning groove 4 is provided on the top of the base 1, the two inclined surfaces of the positioning groove 4 fit the two adjacent downward surfaces of the support body 2, and then position the support body 2, the side surface of the support body 2 is composed of five planes, all of which are provided with square clamping grooves 5, and one side of the clamping groove 5 is provided with an auxiliary fixing mechanism for clamping The groove 5 is provided with an air vent 8 connected to the inner cavity of the support body 2, and support tubes 6 are installed at both ends of the support body 2. Inlet and outlet pipes 7 are installed on the support tube 6. The inlet and outlet pipes 7 are connected to the inner cavity. The two inlet and outlet pipes 7 are connected to the exhaust device and the air intake device respectively. The air in the inner cavity of the support body 2 is extracted or the air is discharged into the inner cavity of the support body 2 through the exhaust device or the air intake device, thereby making the inner cavity of the support body 2 negative pressure or positive pressure. In the unused clamping groove 5, the air vent 8 is blocked with a sealing bolt 15 to prevent air leakage. When in use, the base 1 is passed through Bolt it on the workbench, put the support body 2 into the card slot 4, so that two adjacent surfaces of the support body 2 fit into the card slot 4. At this time, the support tube 6 is located in the arc groove 9, and then snap the fastener 3 onto the top of the support tube 6, and use screws to connect and fix the fastener 3 to the base 1, so that the support body 2 is fixed on the base 1, and place the square workpiece in the upward clamping groove 5 to achieve the positioning of the workpiece. Use the auxiliary fixing mechanism to preliminarily fix the square workpiece, and then start the exhaust device to exhaust the air in the cavity of the support body 2 (the inlet and outlet pipes at the other end 7 is in a closed state), so that the inner cavity is under negative pressure, and the air in the clamping groove 5 is continuously transported inward through the air vent 8, thereby adsorbing the workpiece in the clamping groove 5, so that the workpiece is not easy to fall off and move from the clamping groove 5 during processing, and then the workpiece can be started for milling. After the processing is completed, the air intake device is started to inject air into the inner cavity of the support body 2 (the valve on the inlet and outlet pipe 7 at the other end is closed), so that the inner cavity is under positive pressure, and the gas is discharged into the clamping groove 5 from the air vent 8, and the workpiece is lifted from the clamping groove 5, making it convenient to remove the workpiece. If the clamping groove 5 cannot meet the required accuracy due to long-term use, at this time, the support body 2 can be rotated (rotation angle 72 degrees or an integer multiple thereof), and then other clamping grooves 5 can be replaced for use without replacing the support body 2 and the base 1. Then the support body 2 is fixed on the base 1, and the processing operation can be continued. Compared with the clamp with only one clamping surface, this clamp has five clamping surfaces, which effectively improves the service life of the clamp.

[0031] By setting a base 1 and a pentagonal prism structure support body 2, and symmetrically setting multiple clamping grooves 5 on the support body 2, the clamping grooves 5 are used to position the square workpiece, and the auxiliary fixing mechanism is used to preliminarily fix the workpiece. Finally, the negative pressure suction principle is used to fix the workpiece in the clamping groove 5 for processing, and the workpiece can be conveniently removed. When the clamping groove 5 cannot meet the processing needs, other clamping grooves 5 can be conveniently used to continue the operation, which can greatly improve the service life of the clamp and reduce the cost of use.

[0032] Example 2:

[0033] As shown in Figure 3-4, the auxiliary fixing mechanism includes a mounting groove 10 opened on the side of the clamping groove 5, and a top block 11 is installed in the mounting groove 10. A driving component is provided on one side of the top block 11. The driving component can use elastic force or other rigid force to drive the top block 11 to slide along the mounting groove 10. When in use, the square workpiece is placed in the clamping groove 5, and the driving component drives the top block 11 to move along the mounting groove 10 toward the side of the clamping groove 5, so that the top block 11 is against the side of the workpiece to perform preliminary fixation on the workpiece.

[0034] By providing the mounting groove 10, the top block 11 and the driving assembly, the workpiece can be conveniently initially fixed.

[0035] Example 3:

[0036] like Figure 3-7 As shown, the mounting groove 10 is L-shaped, and the driving assembly includes a threaded groove 12 opened on the outside of the mounting groove 10, and an adjusting screw 14 is installed in the threaded groove 12. An insert plate 13 is installed on the adjusting screw 14, and the bottom end of the insert plate 13 is inserted into the mounting groove 10, and it does not rotate with the adjusting screw 14. A mounting hole 19 and an extrusion slope 18 are opened on the insert plate 13, and the adjusting screw 14 passes through the mounting hole 19, and the extrusion slope 18 contacts the side of the top block 11. When in use, the adjusting screw 14 is rotated to lower its height, thereby lowering the insert plate 13, and the extrusion slope 18 squeezes one side of the top block 11, forcing the top block 11 to slide along the mounting groove 10.

[0037] By providing a driving assembly including the thread groove 12 , the inserting plate 13 , the adjusting screw 14 , and the extrusion slope 18 , the top block 11 can be conveniently driven to move.

[0038] Example 4:

[0039] like Figure 4As shown, a return spring 16 is sleeved on the adjusting screw 14, and the two ends of the return spring 16 are in contact with the support body 2 and the inserting plate 13 respectively. When in use, the adjusting screw 14 is lowered and the return spring 16 is shortened. After the adjusting screw 14 is rotated in the direction, the inserting plate 13 is lifted up under the action of the compressed spring 16, so that it is raised and reset, thereby causing the extrusion inclined surface 18 at the bottom end of the inserting plate 13 to disengage from the top block 11, and the top block 11 is loosened, losing its fixing effect on the workpiece in the clamping groove 5.

[0040] By installing a return spring 16 on the adjusting screw 14 , the extrusion inclined surface 18 can be easily disengaged from the top block 11 , thereby further releasing the fixing effect on the workpiece in the clamping groove 5 .

[0041] Example 5:

[0042] like Figure 6 As shown, a reverse bevel 17 is provided on one side of the top block 11, and the reverse bevel 17 is in contact with the extrusion bevel 18. When in use, the inserting plate 13 descends, and the extrusion bevel 18 moves in contact with the reverse bevel 17, and the contact surface between the two is large. Since the top block 11 will be subjected to a reaction force when it is against the workpiece, the larger contact surface can reduce the pressure and reduce the damage to the contact part between the top block 11 and the extrusion bevel 18, thereby extending the service life of the top block 11 and the inserting plate 13.

[0043] Providing a reverse slope 17 on one side of the top block 11 can help reduce wear and tear and increase the service life of the top block 11 and the inserting plate 13 .

[0044] Example 6:

[0045] like Figure 6 As shown, a gasket 20 is installed on one side of the top block 11. The gasket 20 can be made of a softer material such as copper. The end of the top block 11 equipped with the gasket 20 is against the workpiece. The gasket 20 is soft in texture and can effectively reduce damage to the workpiece surface, thereby improving product quality.

[0046] By installing the gasket 20 on one side of the top block 11, it is beneficial to reduce the damage degree of the workpiece surface and improve the product quality.

[0047] Working principle: When in use, fix the base 1 on the workbench with bolts, put the support body 2 into the slot 4, so that two adjacent surfaces of the support body 2 fit into the slot 4. At this time, the support tube 6 is located in the arc groove 9, and then the fastener 3 is fastened to the top of the support tube 6, and the fastener 3 is connected and fixed to the base 1 with screws, so that the support body 2 is fixed on the base 1, and a square workpiece is placed in the upward clamping groove 5 to achieve the positioning of the workpiece. The square workpiece is preliminarily fixed using the auxiliary fixing mechanism, and then the exhaust device is started to discharge the air from the inner cavity of the support body 2. The air (the air inlet and outlet pipes 7 at the other end are in a closed state) causes negative pressure in the inner cavity, and continuously transports the air in the clamping groove 5 inward through the air vents 8, thereby adsorbing the workpiece in the clamping groove 5, so that the workpiece is not easy to fall off and move from the clamping groove 5 during processing, and then the milling operation of the workpiece can be started. After the processing is completed, the air intake device is started to inject air into the inner cavity of the support body 2 (the air inlet and outlet pipes 7 at the other end are in a closed state), so that the inner cavity is under positive pressure, and the gas is discharged into the clamping groove 5 from the air vents 8, lifting the workpiece from the clamping groove 5, making it convenient to remove the workpiece.

[0048] If the clamping groove 5 cannot meet the required accuracy due to long-term use, the support body 2 can be rotated (rotation angle 72 degrees or an integer multiple thereof) to replace other clamping grooves 5 for use without replacing the support body 2 and the base 1. The support body 2 can then be fixed on the base 1 to continue the processing operation. Compared with a clamp with only one clamping surface, this clamp has five clamping surfaces, which effectively improves the service life of the clamp.

Claims

1. A square workpiece fixture, characterized in that: include: A base (1) and a regular pentagonal prism-shaped support body (2); Fasteners (3) are installed at both ends of the base (1), and a positioning groove (4) is provided on the top of the base (1); The support body (2) is provided with an inner cavity, and five clamping grooves (5) are provided on the side of the support body (2). An auxiliary fixing mechanism is provided on one side of the clamping groove (5). A plurality of air holes (8) communicating with the inner cavity are provided on the clamping groove (5). Support pipes (6) are installed at both ends of the support body (2), and air inlet and outlet pipes (7) are installed on the support pipes (6). The two air inlet and outlet pipes (7) are respectively installed with an exhaust device and an air intake device.

2. A square workpiece fixture according to claim 1, characterized in that: The auxiliary fixing mechanism comprises a mounting groove (10) provided on a side of the clamping groove (5), a top block (11) being installed in the mounting groove (10), and a driving assembly being provided on one side of the top block (11), and the driving assembly driving the top block (11) to slide along the mounting groove (10).

3. A square workpiece fixture according to claim 2, characterized in that: The driving assembly comprises a threaded groove (12) provided on the outer side of the mounting groove (10), an adjusting screw (14) being installed in the threaded groove (12), an inserting plate (13) being installed on the adjusting screw (14), the bottom end of the inserting plate (13) being inserted into the mounting groove (10), and an extrusion inclined surface (18) being provided on the inserting plate (13).

4. A square workpiece fixture according to claim 3, characterized in that: A return spring (16) is sleeved on the adjusting screw (14).

5. A square workpiece fixture according to claim 2, characterized in that: A reverse slope (17) is provided on one side of the top block (11).

6. A square workpiece fixture according to claim 2, characterized in that: A gasket (20) is installed on one side of the top block (11).

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