Special clamp for pushing sub-frame machining hole drilling machine

Abstract

The invention relates to the technical field of clamps, in particular to a special clamp for a pushing sub-frame machining hole drilling machine, which comprises a clamp body and a positioning main bolt fixed at the central position of the clamp body, and an annular structure of a workpiece is sleeved on the positioning main bolt; the positioning piece and the clamping piece are used for positioning and clamping the group of convex handles; one end of the drill plate is fixedly mounted on a convex boss on one side of the fixture body, and the other end of the drill plate is positioned right above the other group of convex handles on the workpiece; the drill bushing is installed on the drill plate in a penetrating mode and right faces the position, needing to be drilled, of the set of protruding handles located under the drill bushing to guide a drill bit on a drilling machine. And a workpiece can be stably fixed, so that the workpiece cannot be loosened or slide in the drilling process.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, in particular to a special clamp for a pushing sub-frame mechanical processing hole drilling machine. Background Art

[0002] In the drilling machine production process of the machinery manufacturing industry, fixtures are used to install workpieces and fix them in the correct position to complete their cutting, inspection, assembly, welding and other processes.

[0003] When the push sub-frame is used for drilling on a drilling machine, due to its special shape (the main body is a ring structure, and multiple sets of lugs are evenly spaced from the circumference of the ring structure, and holes need to be drilled on the lugs), the fixture is often unstable, resulting in low workpiece accuracy, failure to meet accuracy requirements, or damage to the machine tool.

[0004] Therefore, this solution proposes a special fixture for a push sub-frame machining hole drilling machine, which is designed according to the shape and size of the push sub-frame workpiece and can stably fix the workpiece. Summary of the invention

[0005] 1. Technical issues

[0006] The present invention aims to at least solve the problems in the prior art of loosening or sliding of the push sub-frame during drilling, the problem of complicated processing, and the problem of low workpiece precision, failure to meet precision requirements or damage to the machine tool due to unstable fixture.

[0007] (II) Technical content

[0008] This solution provides a special fixture for drilling holes of a push sub-frame, which is achieved by the following specific technical means, including:

[0009] The clamping body is installed on the drilling machine, and the top surface of the clamping body is a platform;

[0010] The main positioning bolt is fixed at the center of the clamping body, and the annular structure of the workpiece is placed on the main positioning bolt and placed on the platform;

[0011] A positioning member and a clamping member, wherein the positioning member is fixed on the platform, and the clamping member is movably mounted on the platform, and the clamping member cooperates with the positioning member to clamp a set of lugs located between the two;

[0012] A drilling template, one end of which is fixedly mounted on a raised boss on one side of the clamp body;

[0013] The drill sleeve is installed through the other end of the drilling template and is directly opposite to the position where the hole needs to be drilled on the workpiece to guide the drill bit on the drilling machine.

[0014] Optimal technical solution 1: In order to avoid vertical shaking of the workpiece when drilling, a set of main nuts is provided on the top of the main positioning bolt.

[0015] Preferred technical solution two: a slide groove is opened on the platform toward the direction of the positioning member, a vertical hole is opened on the clamping member, a group of positioning secondary bolts pass through the slide groove from the bottom and then pass through the vertical hole, and then the clamping member is fixed by tightening the secondary nut.

[0016] Preferred technical solution three: the diameter of the positioning auxiliary bolt column is preferably consistent with the diameter of the slide groove.

[0017] Preferred technical solution four: A group of open gaskets are placed between the workpiece and the main nut on the positioning main bolt.

[0018] Preferred technical solution five: One end of the drilling template can be removably mounted on the boss by means of a slotted cylindrical head screw and a cylindrical pin.

[0019] Preferred technical solution six: the bushing is fixed on the drilling template, and the drill sleeve is inserted into the bushing and placed.

[0020] (III) Technical Effect

[0021] The above structure enables this solution to have the following beneficial effects:

[0022] 1. This scheme has a simple design structure and is easy to manufacture;

[0023] 2. This solution has the characteristics of high strength, strong firmness and not easy to deform;

[0024] 3. This solution can stably fix the workpiece so that it will not loosen or slide during the drilling process;

[0025] 4. The use of this solution can ensure accurate positioning of the workpiece during the processing, thereby processing workpieces with stable dimensions and high precision;

[0026] 5. Using this solution can not only improve processing efficiency, but also ensure the safety of the processing process;

[0027] Special fixtures clamp the workpiece to a fixed state, thereby simplifying the machining process, reducing operation time, improving overall machining efficiency and extending the service life of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0030] Figure 2 This is a top view of the scheme;

[0031] Figure 3 This is the AA section view of this scheme;

[0032] Figure 4 This is a partial cross-sectional view of this scheme.

[0033] Among them, 1. clamping body; 11. platform; 12. boss; 13. slide groove;

[0034] 2. Positioning main bolt; 21. Main nut; 22. Opening gasket;

[0035] 3. Positioning parts;

[0036] 4. Clamping piece; 41. Positioning auxiliary bolt; 42. Auxiliary nut;

[0037] 5. Drill template; 51. Slotted cylindrical head screw; 52. Cylindrical pin;

[0038] 6. Drill sleeve; 61. Bushing; 62. Positioning screw;

[0039] 7. Workpiece; 71. Protruding handle. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 4 , a special fixture for a drilling machine for machining holes of a push-type subframe, comprising a clamp body 1, a positioning main bolt 2, a positioning member 3, a clamping member 4, a drilling template 5 and a drilling sleeve 6; wherein the clamp body 1 is installed on the drilling machine and is located below the drill bit on the drilling machine, the top surface of the clamp body 1 is a platform 11, the positioning main bolt 2 is fixed at the center position of the clamp body 1, and the annular structure sleeve of the workpiece 7 is placed on the positioning main bolt 2 and placed on the platform 11;

[0042] The positioning member 3 and the clamping member 4 are both mounted on the platform 11 and close to each other, and a group of lugs 71 on the workpiece 7 are placed between the positioning member 3 and the clamping member 4, and are clamped by the positioning member 3 and the clamping member 4. The side of the clamping member 4 that contacts the lugs 71 is an inclined surface that matches the lugs 71, thereby maintaining a sufficient contact surface with the lugs 71.

[0043] One end of the drilling template 5 is detachably mounted on a convex boss 12 on one side of the clamp body 1 by means of a slotted cylindrical head screw 51 and a cylindrical pin 52, and the other end is located just above another set of convex handles 71 on the workpiece 7;

[0044] The drill sleeve 6 passes through the drilling template 5 and is aligned with the position where holes need to be drilled on a group of lugs 71 located directly below it, guiding the drill bit on the drilling machine. When drilling, the drill bit on the drilling machine passes through the drill sleeve 6 and drills the lugs 71 below.

[0045] See also Figure 1-Figure 4 , a special fixture for a drilling machine for machining holes on a push-pushing sub-frame, a positioning member 3 is fixed on a platform 11, a slide groove 13 is provided on the platform 11 in the direction of the positioning member 3, and the bottom end of the clamping member 4 slides along the slide groove 13;

[0046] A vertical hole is provided on the clamping member 4, a set of positioning secondary bolts 41 pass through the slide slot 13 from the bottom of the slide slot 13 and then pass through the vertical hole, and a set of secondary nuts 42 are screwed on the top of the positioning secondary bolts 41, and the clamping member 4 moves toward the positioning member 3, and the positioning member 3 can be cooperated to complete the positioning and clamping of the set of lugs 71, so as to avoid horizontal shaking of the workpiece 7 when drilling, and then the secondary nuts 42 are tightened, so that the clamping member 4 can be pressed tightly on the platform 11 to fix its position;

[0047] The diameter of the bolt column of the auxiliary positioning bolt 41 is consistent with the diameter of the sliding groove 13 , thereby further improving the stability of the auxiliary positioning bolt 41 fixing the clamping member 4 .

[0048] See also Figure 1 and Figure 3 , a special fixture for the drilling machine for machining holes of the push-pushing sub-frame is used. In order to avoid vertical shaking of the workpiece 7 when drilling holes, a set of main nuts 21 are screwed on the top of the positioning main bolt 2, and the main nuts 21 are moved downward to press the workpiece 7;

[0049] A set of open washers 22 is placed between the workpiece 7 and the main nut 21 on the positioning main bolt 2. The open washers 22 can protect the workpiece 7 when the main nut 21 is tightened to prevent the main nut 21 from causing scratches on the top surface of the workpiece 7.

[0050] Therefore, the size of the open gasket 22 is larger than that of the main nut 21 , and preferably also larger than the aperture of the annular structure in the workpiece 7 .

[0051] See also Figure 1 and Figure 3 , a special fixture for the drilling machine for machining holes on the pushing sub-frame is used. A bushing 61 is fixed through the drilling template 5. The drill sleeve 6 is inserted into the bushing 61 and placed. A set of positioning screws 62 are screwed into the threaded holes on the drilling template 5 at the bottom ends. The enlarged ends of the tops are pressed on the protruding sides of the tops of the drill sleeves 6 to achieve pressing and fixing of the drill sleeves 6.

[0052] The undisclosed parts in the present invention are all prior art, and their specific structures and working principles are not described in detail.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special fixture for a drilling machine for machining holes on a push sub-frame, comprising a fixture body (1), which is installed on the drilling machine, and the top surface of the fixture body (1) is a platform (11), characterized in that: Also includes A main positioning bolt (2) is fixed on the clamp body (1), and the annular structure of the workpiece (7) is placed on the main positioning bolt (2) and placed on the platform (11); A positioning member (3) and a clamping member (4) are mounted on the platform (11), wherein the positioning member (3) and the clamping member (4) cooperate to clamp a set of lugs (71); A drilling template (5), one end of which is fixedly mounted on a boss (12) on one side of the clamp body (1), and the other end of which is located directly above another set of bosses (71) on the workpiece (7); The drill sleeve (6) is mounted on the drill template (5) and is directly opposite to the position where holes need to be drilled on a set of lugs (71) located directly below the drill sleeve, so as to guide the drill bit on the drilling machine.

2. The special fixture for drilling holes of a pushing subframe according to claim 1 is characterized in that: The positioning member (3) is fixed on the platform (11), and the clamping member (4) is movably mounted on the platform (11), and a group of lugs (71) on the workpiece (7) are placed between the positioning member (3) and the clamping member (4).

3. The special fixture for drilling holes of a pushing sub-frame according to claim 2 is characterized in that: A slide groove (13) is provided on the platform (11) in the direction of the positioning member (3); the bottom end of the clamping member (4) slides along the slide groove (13) and the clamping member (4) is fixed to the slide groove (13) by means of a positioning secondary bolt (41) extending through the slide groove (13) and cooperating with a secondary nut (42).

4. A special fixture for drilling holes of a pushing sub-frame according to claim 1 or 3, characterized in that: A main nut (21) is provided on the top of the main positioning bolt (2), and the main nut (21) moves downward to press the workpiece (7).

5. The special fixture for drilling holes of a pushing sub-frame according to claim 4 is characterized in that: A set of open gaskets (22) are placed on the main positioning bolt (2) between the workpiece (7) and the main nut (21).

6. The special fixture for drilling holes of a pushing sub-frame according to claim 1 is characterized in that: One end of the drilling template (5) is detachably mounted on the boss (12) via a slotted cylindrical head screw (51) and a cylindrical pin (52).

7. The special fixture for drilling holes of a pushing subframe according to claim 1 is characterized in that: The bushing (61) is fixed on the drilling template (5), and the drill sleeve (6) is inserted into the bushing (61) and placed therein. The bottom ends of a set of positioning screws (62) are screwed into threaded holes on the drilling template (5), and the top enlarged ends thereof are pressed against the protruding side edges of the top of the drill sleeve (6) to press and fix the drill sleeve (6).

8. The special fixture for drilling holes of a pushing sub-frame according to claim 3 is characterized in that: The diameter of the bolt column of the positioning auxiliary bolt (41) is consistent with the diameter of the sliding groove (13).

9. The special fixture for drilling holes of a pushing sub-frame according to claim 2 is characterized in that: The side surface of the clamping piece (4) that contacts the lug (71) is an inclined surface that matches the lug (71).

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