Fixture special for drilling machine
By introducing a combination design of V-blocks and oil cylinders in the special fixture of the drilling machine, combined with guide blocks and flip pressure plates, the problem of horizontal displacement of the workpiece during the drilling process is solved, achieving higher processing accuracy and stability.
Patent Information
- Application Number
- CN202422986624.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-12-05
AI Technical Summary
During the drilling process, the workpiece to be processed is easily displaced in the horizontal direction by the existing special fixture for drilling machines, resulting in deviation of the drilling position.
The fixture body includes a V-shaped block and a cylinder. The cylinder pushes the fixture body and the fixed component to clamp the workpiece to be processed. Combined with the guide block and the drilling template, multi-directional positioning is achieved. The hollow cylindrical support table and the flip pressure plate are used to ensure rigid connection.
It effectively prevents the horizontal displacement of the workpiece to be processed, ensures the accuracy of the drilling position, and improves processing accuracy and stability.
Smart Images
Figure CN223325508U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drilling machine clamps, and in particular relates to a special clamp for drilling machines. Background Art
[0002] Existing special fixtures for drilling machines only position the workpiece in the vertical direction. However, during the drilling process, various factors may cause the workpiece to be displaced in the horizontal direction, resulting in an offset in the drilling position. Utility Model Content
[0003] In view of the above problems, the utility model provides a special clamp for a drilling machine.
[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0005] A special fixture for a drilling machine includes a fixture base, a fixing assembly, a fixture body and a cylinder. The cylinder, fixing assembly and fixture body are arranged on the fixture base with relative intervals, and the fixture body is located between the cylinder and the fixing assembly. One end of the workpiece to be processed is fixed on the fixing assembly, and the side to be processed of the workpiece to be processed is placed on the side of the fixture body close to the fixing assembly. The cylinder shaft of the cylinder abuts against the fixture body, which is used to push the fixture body and then clamp the workpiece to be processed with the fixing assembly.
[0006] Furthermore, the clamp body includes a V-shaped block, the V-shaped notch open end of the V-shaped block faces the fixing assembly, and the free end of the cylinder shaft abuts against a side surface of the V-shaped block close to the cylinder.
[0007] Furthermore, the fixture body also includes two guide blocks that are mirror-symmetrically arranged relative to the central axis of the moving direction of the V-shaped block, and the opposite side surfaces of the two guide blocks are tightly arranged against the side surfaces of the V-shaped block.
[0008] Furthermore, the fixture body also includes a drilling template, the upper end surface of the V-shaped block and the upper end surfaces of the two guide blocks are located in the same horizontal plane, the drilling template is placed on the upper end surfaces of the V-shaped block and the two guide blocks, and the drilling template and the two guide blocks are positioned and connected by positioning pins and bolts; the side of the drilling template close to the fixed component is an open V-shaped end facing the cylinder, the end of the V-shaped end is located directly above the V-shaped notch of the V-shaped block, and a circular drill hole is opened within the angle of the V-shaped end.
[0009] Furthermore, the fixture body also includes a hollow cylindrical support platform, which is placed on the fixture base and located in the V-shaped notch of the V-shaped block. The hollow cylindrical support platform is arranged coaxially with the circular drilled hole.
[0010] Furthermore, the longitudinal section of the clamp base is L-shaped, and support plates parallel to its horizontal plates are symmetrically provided at both ends of the inner upper part of its vertical plate. The fixing assembly includes a rotating shaft, a flip pressure plate and a spindle. The two ends of the rotating shaft are fixed to the two support plates, one side of the flip pressure plate is rotatably connected to the rotating shaft, and the spindle is fixed below the flip pressure plate. A vertical center screw hole is provided on the spindle, and a spindle locating pin is screwed in the screw hole. The upper end of the spindle locating pin extends above the flip pressure plate, and the spindle locating pin is connected to the flip pressure plate through a gasket and a nut.
[0011] Furthermore, a notch is provided on the flip pressure plate at a position directly above the spindle, extending from its end surface away from the rotation axis in a direction perpendicular to the rotation axis, and the spindle positioning pin passes through the flip pressure plate through the notch.
[0012] Furthermore, the gasket is an open gasket, and the opening of the gasket is arranged opposite to the notch in the upper and lower directions.
[0013] Furthermore, the fixing assembly also includes a support platform, which is fixed on the fixture base. The lower end of the core shaft passes through the support platform and is fixedly connected to the fixture base, and the core shaft is arranged on the same central axis as the support platform.
[0014] Furthermore, a plurality of screw holes are distributed on the fixture base, and the fixture base is connected to the drilling machine workbench through bolts.
[0015] The utility model is a special fixture for drilling machines. The fixture body ensures the rigidity requirements of the fixture and is connected to the machine tool. The positioning spindle plays a major positioning role, and the operation of the cylinder piston rod drives the movement of the V-shaped block, ultimately achieving angular positioning and clamping of the workpiece. The top clamping plate adopts a hinge type, and the clamping plate can be loosened and the workpiece can be removed without completely unscrewing the clamping nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the special fixture for drilling machines described in this utility model. Figure 1 .
[0017] Figure 2 This is a schematic diagram of the structure of the special fixture for drilling machines described in this utility model. Figure 2 .
[0018] Among them, 1- fixture base, 2- oil cylinder, 3- V-shaped block, 4- hollow cylindrical support platform, 5- guide block, 6- drilling template, 7- support plate, 8- rotating shaft, 9- flip pressure plate, 10- support platform, 11- spindle, 12- spindle locating pin, 13- open gasket, 14- nut, 15- locating pin, 16- bolt, 61- circular drill hole, 91- notch. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] like Figure 1~Figure 2 As shown, a special fixture for drilling machines includes a fixture base 1, a fixing component, a fixture body and a cylinder 2. The cylinder 2, the fixing component and the fixture body are arranged on the fixture base 1 with relative intervals, and the fixture body is located between the cylinder 2 and the fixing component. One end of the workpiece to be processed is fixed on the fixing component, and the side to be processed of the workpiece to be processed is placed on the side of the fixture body close to the fixing component. The cylinder 2 axis of the cylinder 2 is in contact with the fixture body, which is used to push the fixture body and then clamp the workpiece to be processed with the fixing component; a plurality of screw holes are evenly distributed on the fixture base 1, and the fixture base 1 is connected to the drilling machine workbench by bolts.
[0021] The fixture body includes a V-shaped block 3, a hollow cylindrical support platform 4, two guide blocks 5 and a drilling template 6 that are mirror-symmetrically arranged relative to the central axis of the moving direction of the V-shaped block 3. The open end of the V-shaped notch of the V-shaped block 3 faces the fixed component, and the free end of the cylinder shaft abuts against the side surface of the V-shaped block 3 close to the cylinder 2; the opposite sides of the two guide blocks 5 are tightly arranged against the side surfaces of the V-shaped block 3; the upper end surface of the V-shaped block 3 and the upper end surfaces of the two guide blocks 5 are located in the same horizontal plane, and the drilling template 6 is placed On the upper end surfaces of the V-shaped block 3 and the two guide blocks 5, the drilling template 6 is positioned and connected to the two guide blocks 5 by positioning pins 15 and bolts 16; the side of the drilling template 6 close to the fixing component is a V-shaped end open toward the cylinder 2, and the end of the V-shaped end is located directly above the V-shaped notch of the V-shaped block 3, and a circular drill hole 61 is opened within the angle of the V-shaped end; the hollow cylindrical support platform 4 is placed on the fixture base 1 and is located in the V-shaped notch of the V-shaped block 3, and the hollow cylindrical support platform 4 is arranged coaxially with the circular drill hole 61.
[0022] The longitudinal section of the clamp base 1 is L-shaped, and support plates 7 parallel to its horizontal plates are symmetrically provided at both ends of the inner upper part of the vertical plate. The fixing assembly includes a rotating shaft 8, a flip pressure plate 9, a support platform 10 and a spindle 11. The two ends of the rotating shaft 8 are fixed on the two support plates 7, one side of the flip pressure plate 9 is rotatably connected to the rotating shaft 8, and the spindle 11 is fixed below the flip pressure plate 9. A vertical center screw hole is provided on the spindle 11, and a spindle positioning pin 12 is screwed in the screw hole. When the flip pressure plate 9 is located on the spindle 1 1 is provided at a position directly above the said fixture base 1, and a notch 91 is provided from its end surface on the side away from the rotating shaft 8 to extend perpendicular to the rotating shaft 8, the said spindle locating pin 12 passes through the said flip pressure plate 9 from the notch 91, and the opening of the opening gasket 13 is arranged opposite to the notch 91 up and down, and the spindle locating pin 12 is connected to the flip pressure plate 9 through the opening gasket 13 and the nut 14; the said support platform 10 is fixed on the said fixture base 1, and the lower end of the said spindle 11 passes through the said support platform 10 and is fixedly connected to the fixture base 1, and the spindle 11 is arranged on the support platform 10 with the center axis 11.
[0023] Before using this fixture, you need to align it on the drilling machine workbench. That is, install a Φ5mm measuring rod in the taper hole of the drilling machine spindle, move the drilling machine fixture, let the measuring rod smoothly extend into the drill sleeve, and then use the flip pressure plate to press the workpiece to prevent movement before drilling. The specific positioning and clamping work is as follows:
[0024] a. Positioning: According to the requirements of the process diagram and the principle of datum coincidence, the workpiece is positioned on the spindle locating pin using the large-end Φ30mm hole and the end face. The spindle locating pin limits movement in the X and Y directions; the lower end face of the flip plate limits movement and rotation in the X direction and rotation in the Y direction; the movable V-block limits rotation in the Z direction. Combined results limit six degrees of freedom to meet the processing requirements.
[0025] b. Clamping: Install a cylinder adjusting screw at the end to connect the spherical end face to the movable V-shaped block. Since the distance between the processing position and the clamping position is large, an auxiliary support is set.
[0026] Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A special fixture for drilling machine, characterized in that: It includes a fixture base, a fixing assembly, a fixture body and a cylinder. The cylinder, the fixing assembly and the fixture body are arranged on the fixture base with intervals relative to each other, and the fixture body is located between the cylinder and the fixing assembly. One end of the workpiece to be processed is fixed on the fixing assembly, and the side to be processed of the workpiece to be processed is placed on the side of the fixture body close to the fixing assembly. The cylinder shaft of the cylinder is in contact with the fixture body to push the fixture body and then clamp the workpiece to be processed with the fixing assembly.
2. A special fixture for drilling machine according to claim 1, characterized in that: The clamp body includes a V-shaped block, the V-shaped notch open end of the V-shaped block faces the fixing assembly, and the free end of the cylinder shaft abuts against a side surface of the V-shaped block close to the cylinder.
3. A special fixture for drilling machine according to claim 2, characterized in that: The clamp body further comprises two guide blocks which are arranged in mirror symmetry with respect to the central axis of the moving direction of the V-shaped block, and the opposite side surfaces of the two guide blocks are arranged in close contact with the side surfaces of the V-shaped block.
4. A special fixture for drilling machine according to claim 3, characterized in that: The fixture body also includes a drilling template, the upper end surface of the V-shaped block and the upper end surfaces of the two guide blocks are located in the same horizontal plane, the drilling template is placed on the upper end surfaces of the V-shaped block and the two guide blocks, and the drilling template and the two guide blocks are positioned and connected by positioning pins and bolts; the side of the drilling template close to the fixed component is an open V-shaped end facing the cylinder, the end of the V-shaped end is located directly above the V-shaped notch of the V-shaped block, and a circular drill hole is opened within the angle of the V-shaped end.
5. A special fixture for drilling machine according to claim 4, characterized in that: The fixture body also includes a hollow cylindrical support platform, which is placed on the fixture base and located in the V-shaped notch of the V-shaped block. The hollow cylindrical support platform is arranged coaxially with the circular drilled hole.
6. The special fixture for drilling machine according to claim 5, characterized in that: The longitudinal section of the clamp base is L-shaped, and support plates parallel to its horizontal plates are symmetrically provided at both ends of the inner upper part of the vertical plate. The fixing assembly includes a rotating shaft, a flip pressure plate and a core shaft. The two ends of the rotating shaft are fixed to the two support plates, one side of the flip pressure plate is rotatably connected to the rotating shaft, and the core shaft is fixed below the flip pressure plate. A vertical center screw hole is provided on the core shaft, and a core shaft locating pin is screwed in the screw hole. The upper end of the core shaft locating pin extends above the flip pressure plate, and the core shaft locating pin is connected to the flip pressure plate through a gasket and a nut.
7. A special fixture for drilling machine according to claim 6, characterized in that: A notch is provided on the flip pressure plate at a position directly above the spindle, extending from its end surface away from the rotation axis in a direction perpendicular to the rotation axis, and the spindle positioning pin passes through the flip pressure plate through the notch.
8. The special fixture for drilling machine according to claim 7, characterized in that: The gasket is an open gasket, and the opening of the gasket is arranged opposite to the notch in the upper and lower directions.
9. The special fixture for drilling machine according to claim 8, characterized in that: The fixing assembly also includes a support platform, which is fixed on the fixture base. The lower end of the mandrel passes through the support platform and is fixedly connected to the fixture base, and the mandrel is arranged on the same central axis as the support platform.
10. A special fixture for drilling machine according to any one of claims 1 to 9, characterized in that: A plurality of screw holes are evenly distributed on the clamp base, and the clamp base is connected to the drilling machine workbench through bolts.