Quick workpiece clamping jig for anti-warping positioning

Abstract

The utility model provides an anti-warping positioning quick workpiece clamping jig. The anti-warping positioning quick workpiece clamping jig comprises a tray, a flange, an adjusting base, a pressing block, a cylindrical nut and a height-adjustable foot pad. The flange, the adjusting base and the height-adjustable foot pad are installed on the tray, the pressing block is installed on the adjusting base, the bottom installation face of the adjusting base is of a tooth face structure and slides in cooperation with the tooth face structure of the tray at the installation position, the adjusting base can move on the tooth face of the tray, and the cylindrical nut and the adjusting bolt move along with the adjusting base. According to the fixture, the positions of the adjusting base and the pressing block are adjusted, the fixture adaptability to workpieces of different specifications is achieved, the pressing block is adopted for pressing the edge warping prevention and edge blocking high-precision positioning face of the workpiece, the product quality is improved, and meanwhile the production and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixture equipment, in particular to a quick workpiece clamping fixture for preventing warping and positioning. Background Art

[0002] With the widespread application of CNC machining center equipment in the field of mechanical processing, the fixtures on the machining center directly affect the efficiency, speed and accuracy of the processed parts. At present, there is no fixture for positioning workpieces, which is time-consuming and labor-intensive. In particular, there are few fast workpiece clamping fixtures with anti-warping positioning. They need to be re-positioned. When the workpiece is assembled again, it needs to be positioned again when the equipment is clamped. The operation is troublesome, the clamping time is very long, and the positioning accuracy is not high, which affects the processing quality and production efficiency of the workpiece, resulting in reduced equipment processing efficiency, increased difficulty in manual operation, increased labor costs, and cannot be mass-produced. At the same time, the cost of special fixtures with different fixtures for different workpiece specifications is increased, which makes the degree of automation and production efficiency of workpiece centering low. Utility Model Content

[0003] The utility model provides a quick workpiece clamping fixture with anti-warping positioning. The adjustable base and the inclined surface and dovetail groove of the clamping block cooperate to clamp the workpiece surface and have an anti-warping function. The adjustable base is fixed to the cylindrical nut by an adjusting bolt. The cylindrical nut is installed in the cylindrical installation groove of the tray and can slide, thereby driving the movement of the adjustable base and the clamping block to adapt to the positioning and processing dimensions of workpieces of different specifications and improve work efficiency.

[0004] To solve the above problems, the utility model provides a quick workpiece clamping fixture for anti-warping positioning, comprising a pallet, a rib, an adjustment base, a clamping block, a cylindrical nut and a height-adjustable foot; the rib, the adjustment base and the height-adjustable foot are installed on the pallet, the clamping block is installed on the adjustment base, the bottom mounting surface of the adjustment base is a tooth surface structure, which cooperates and slides with the tooth surface structure of the pallet at the installation position, the adjustment base can move on the tooth surface of the pallet, and the cylindrical nut and the adjusting bolt move accordingly, thereby adjusting the position of the adjustment base and the clamping block, which is used to adapt the fixture to workpieces of different specifications.

[0005] Preferably, the clamping block is fixed on the raised boss of the adjustment base by a clamping screw.

[0006] Preferably, the external thread of the clamping screw cooperates with the threaded hole in the dovetail groove of the adjustment base to screw-compress the clamping block.

[0007] Preferably, the dovetail slide rail of the clamping block cooperates with the dovetail groove of the adjusting base through the inclined surface, and the clamping block is fixed by the clamping screw. Through the limiting effect of the clamping block and the adjusting base, the clamping force of the clamping block is always in one direction to prevent the clamped workpiece from warping up.

[0008] Preferably, the adjustment base is fixed to a cylindrical nut by means of the adjustment bolt and mounted on a tray.

[0009] Preferably, the cylindrical nut is mounted in a cylindrical mounting groove on the tray and can slide.

[0010] Preferably, the clamping block is in direct contact with the surface of the workpiece, and the other end of the workpiece and the retaining edge are positioned in cooperation with each other to clamp the workpiece.

[0011] Preferably, the flatness of the surface where the rib contacts the workpiece is 0.01 mm, and the surface roughness is less than or equal to R1.6, which is used as a positioning reference surface for the workpiece.

[0012] The surface on the retaining edge that contacts the workpiece has high precision. When the workpiece is clamped, the contact surface on the retaining edge is used as the positioning reference. The clamping force applied to the workpiece is adjusted by screwing the mounting bolts of the clamping block in different directions. The workpiece is fitted on the positioning surface of the retaining edge with a suitable clamping force and clamped with the positioning surface on the retaining edge as the reference. Good X and Y surface straightness can be obtained during the initial clamping, which greatly reduces the number of adjustments during workpiece clamping, reduces the calibration time of the workpiece, and enables fast clamping of the workpiece.

[0013] Preferably, the height-adjustable feet are provided with adjusting screws installed at the bottom of the pallet, which are used to adjust the height of the fixture and the clamping workpiece in various directions, so that the pallet can achieve the parallelism of the X-axis and the Y-axis, thereby ensuring the quality of workpiece processing.

[0014] The beneficial effects of the utility model are as follows: the inclined surface and dovetail groove of the adjusting base and the clamping block are used to clamp the surface of the workpiece, which has an anti-warping function; the adjusting base is fixed to the cylindrical nut by an adjusting bolt; the cylindrical nut is installed in the cylindrical installation groove of the tray and can slide, thereby driving the movement of the adjusting base and the clamping block to adapt to the positioning and processing dimensions of workpieces of different specifications, and improve work efficiency; the rib structure can reduce the number of adjustments when the workpiece is clamped, reduce the calibration time of the workpiece, shorten the adjustment time when the workpiece is clamped, and enable the workpiece to be clamped quickly, which has the following advantages:

[0015] Improvement 1: The workpiece is easy to assemble with the rib positioning, and there is no need to re-drill and center the workpiece in the machine tool fixture, which saves time and effort and improves production efficiency;

[0016] Improvement 2: Simple structure, easy maintenance, movable adjustment base, workpieces can adapt to different specifications and sizes, workpiece interchangeability is good, the service life of the fixture is long, and cost is saved;

[0017] Improvement 3: The use of clamping blocks to clamp the workpiece to prevent warping, and the high-precision positioning surface of the retaining edge improves the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjustment base and the pressing block in the embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly structure of an embodiment of the utility model.

[0021] Reference numerals

[0022] 1. Height-adjustable feet; 2. Tray; 3. Tooth surface; 4. Cylindrical mounting groove; 5. Side rib; 6. Side rib bolt; 7. Cylindrical nut; 8. Adjustment base; 9. Adjustment bolt; 10. Clamping block; 11. Clamping screw; 12. Dovetail guide rail; 13. Inclined surface; 14. Dovetail groove. DETAILED DESCRIPTION

[0023] In order to more fully understand the technical content of the present invention, the technical solution of the present invention is further introduced and illustrated in conjunction with the accompanying drawings and specific embodiments, but is not limited thereto.

[0024] like Figures 1 to 3 As shown, a specific embodiment of the utility model is a quick workpiece clamping fixture for anti-warping positioning, comprising a pallet 2, a rib 5, an adjustment base 8, a clamping block 10, a cylindrical nut 7 and a height-adjustable foot 1; the rib 5, the adjustment base 8 and the height-adjustable foot 1 are installed on the pallet 2, the clamping block 10 is installed on the adjustment base 8, the bottom mounting surface of the adjustment base 8 is a tooth surface 3 structure, which slides in cooperation with the tooth surface 3 structure of the pallet 2 at the installation position, the adjustment base 8 can move on the tooth surface 3 of the pallet 2, and the cylindrical nut 7 and the adjusting bolt 9 move accordingly, thereby adjusting the position of the adjustment base 8 and the clamping block 10, which is used for the adaptability of the fixture to workpieces of different specifications.

[0025] Furthermore, the pressing block 10 is mounted and fixed on the raised boss of the adjustment base 8 by the pressing screw 11 .

[0026] Furthermore, the external thread of the clamping screw 11 cooperates with the threaded hole in the dovetail groove 14 of the adjustment base 8 to screw-compress the clamping block 10 .

[0027] Furthermore, the dovetail slide rail 12 of the clamping block 10 cooperates with the dovetail groove 14 of the adjusting base 8 through the inclined surface 13, and the clamping block 10 is fixed by the clamping screw 11. Through the limiting effect of the clamping block 10 and the adjusting base 8, the clamping force of the clamping block 10 is always in one direction to prevent the clamped workpiece from warping up.

[0028] Furthermore, the adjustment base 8 is fixed to the cylindrical nut 7 through the adjustment bolt 9 and is installed on the tray 2 .

[0029] Furthermore, the cylindrical nut 7 is installed in the cylindrical installation groove 4 on the tray 2 and can slide.

[0030] Furthermore, the clamping block 10 is in direct contact with the surface of the workpiece, and the other end of the workpiece and the retaining edge 5 are positioned in cooperation with each other to clamp the workpiece.

[0031] The retaining edge 5 is fixed to the pallet 2 by retaining edge bolts 6 and is positioned with the workpiece during processing.

[0032] Furthermore, the flatness of the surface where the rib 5 contacts the workpiece is 0.01 mm, and the surface roughness is less than or equal to R1.6, which is used as a positioning reference surface for the workpiece.

[0033] The surface on the flange 5 that contacts the workpiece has a high precision. When the workpiece is clamped, the contact surface on the flange 5 is used as the positioning reference. The clamping force applied to the workpiece is adjusted by screwing the mounting bolts of the clamping block 10 in different directions. The workpiece is fitted on the positioning surface of the flange 5 with a suitable clamping force and clamped with the positioning surface on the flange 5 as the reference. Good X and Y surface straightness can be obtained during the initial clamping, which greatly reduces the number of adjustments during workpiece clamping, reduces the calibration time of the workpiece, and enables quick clamping of the workpiece.

[0034] Furthermore, the height-adjustable foot 1 is provided with an adjusting screw installed at the bottom of the tray 2, which is used to adjust the height of the fixture and the clamping workpiece in various directions, so that the tray 2 can achieve the parallelism of the X-axis and the Y-axis, thereby ensuring the quality of workpiece processing.

[0035] The beneficial effects of the utility model are as follows: the inclined surface 13 and the dovetail groove 14 of the adjusting base 8 and the clamping block 10 cooperate to clamp the workpiece surface, which has an anti-warping function. The adjusting base 8 is fixed to the cylindrical nut 7 by the adjusting bolt 9. The cylindrical nut 7 is installed in the cylindrical mounting groove 4 of the tray 2 and can slide, thereby driving the movement of the adjusting base 8 and the clamping block 10 to adapt to the positioning and processing dimensions of workpieces of different specifications and improve work efficiency. The rib structure can reduce the number of adjustments when the workpiece is clamped, reduce the calibration time of the workpiece, shorten the adjustment time when the workpiece is clamped, and enable the workpiece to be clamped quickly. The utility model has the following advantages:

[0036] Improvement 1: The workpiece is easy to assemble with the rib positioning, and there is no need to re-drill and center the workpiece in the machine tool fixture, which saves time and effort and improves production efficiency;

[0037] Improvement 2: Simple structure, easy maintenance, movable adjustment base 8, workpieces can adapt to different specifications and sizes, workpiece interchangeability is good, the service life of the fixture is long, and cost is saved;

[0038] Improvement 3: The clamping block 10 is used to clamp the workpiece to prevent the edge from warping, and the high-precision positioning surface of the retaining edge improves the quality of the product.

[0039] The above only describes the preferred implementation methods of this patent and does not limit the scope of this patent. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings, directly or indirectly used in other related technical fields, falls within the scope of protection of this patent.

Claims

1. A quick workpiece clamping fixture for anti-warping positioning, characterized in that: It includes a tray, a rib, an adjustment base, a clamping block, a cylindrical nut and a height-adjustable pad; the rib, the adjustment base and the height-adjustable pad are installed on the tray, and the clamping block is installed on the adjustment base. The bottom mounting surface of the adjustment base is a tooth surface structure, which cooperates and slides with the tooth surface structure of the tray at the installation position. The adjustment base can move on the tooth surface of the tray, and the cylindrical nut and the adjusting bolt move accordingly, thereby adjusting the position of the adjustment base and the clamping block.

2. The anti-warping positioning fast workpiece clamping fixture according to claim 1 is characterized in that: The clamping block is fixed on the raised boss of the adjusting base by a clamping screw.

3. The anti-warping positioning fast workpiece clamping fixture according to claim 2 is characterized in that: The external thread of the clamping screw cooperates with the threaded hole in the dovetail groove of the adjustment base to screw-compress the clamping block.

4. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The dovetail slide rail of the clamping block cooperates with the dovetail groove of the adjusting base through the inclined surface, and the clamping block is fixed by the clamping screw. Through the limiting effect of the clamping block and the adjusting base, the clamping force of the clamping block is always in one direction to prevent the clamped workpiece from warping up.

5. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The adjusting base is fixed on the cylindrical nut through the adjusting bolt and is installed on the tray.

6. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The cylindrical nut is installed in a cylindrical installation groove on the tray and can slide.

7. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The clamping block is in direct contact with the surface of the workpiece, and the other end of the workpiece is positioned in cooperation with the retaining edge to clamp the workpiece.

8. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The flatness of the surface where the rib contacts the workpiece is 0.01 mm, and the surface roughness is less than or equal to R1.6, which is used as the positioning reference surface of the workpiece.

9. The anti-warping positioning fast workpiece clamping fixture according to claim 1, characterized in that: The height-adjustable feet are provided with adjusting screws installed at the bottom of the tray, and are used to adjust the height of the fixture and the clamping workpiece in various directions so that the tray can achieve parallelism between the X-axis and the Y-axis.

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