Quick positioning clamp for finish machining of end face of special-shaped workpiece

Abstract

The utility model discloses a quick positioning clamp for finish machining of an end face of a special-shaped workpiece, which comprises a clamp body, the clamp body is provided with a clamping part, a positioning groove is arranged on the clamping part, an auxiliary positioning piece is arranged between the clamping part and the workpiece, a sliding groove is arranged on the clamping part, and a plurality of partition gaps are arranged on the clamping part. The auxiliary positioning piece is firstly installed on a workpiece, then the auxiliary positioning piece and the workpiece are inserted into the positioning groove together, meanwhile, it is ensured that the auxiliary positioning piece and the sliding groove are aligned, and finally the clamp body is locked on a main shaft of a machine tool through the locking piece. The elastic clamping arms can be folded to clamp a workpiece through the matching of the outer conical surface and the inner conical surface; the side face and the end face of the workpiece can be positioned through the positioning groove, the correct installation angle of the workpiece can be ensured through cooperation of the auxiliary positioning piece and the sliding groove, the positioning accuracy is ensured, and rapid and accurate positioning of the workpiece is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a quick positioning fixture for precision machining of the end face of irregularly shaped workpieces. Background Technology

[0002] When machining the workpiece shown in the attached figure, there is an angle between the center line of one end face and the inner hole and the axis of the outer side (arc surface). When the end face and inner hole of the workpiece need to be precision machined by CNC lathe, the clamping is time-consuming and labor-intensive. Therefore, this utility model came into being. Utility Model Content

[0003] To address the aforementioned technical problem of time-consuming and labor-intensive workpiece clamping and positioning when machining inclined end faces and inner holes, this utility model provides the following technical solution: a rapid positioning fixture for precision machining of irregularly shaped workpiece end faces, comprising a fixture body, a clamping part for positioning the workpiece, a positioning groove for positioning the workpiece on the clamping part, the positioning groove comprising: an end face positioning surface that matches the end face of the workpiece and a side face positioning surface that matches the side face of the workpiece, an auxiliary positioning component provided between the clamping part and the workpiece, the auxiliary positioning component being detachably connected to the workpiece, a sliding groove on the clamping part that is slidably connected to the auxiliary positioning component, the sliding groove communicating with the positioning groove, multiple dividing gaps on the clamping part for dividing the clamping part into several elastic clamping arms, the outer side of each elastic clamping arm having an outer conical surface that matches the inner conical surface of the machine tool spindle, and a locking component connected to the fixture body for locking the fixture body onto the machine tool spindle.

[0004] As described above, a quick positioning fixture for finishing the end face of an irregularly shaped workpiece has a positioning hole on the side of the workpiece. The auxiliary positioning component includes a positioning pin that can be inserted into the positioning hole and a positioning disc that can be engaged in a slide groove. The positioning disc is disc-shaped and its diameter is equal to the width of the slide groove.

[0005] The quick positioning fixture for finishing the end face of irregularly shaped workpieces as described above has a dividing gap width of 1-3 mm.

[0006] As described above, a quick positioning fixture for finishing the end face of an irregularly shaped workpiece has four dividing gaps on the clamping part for dividing the clamping part into four elastic clamping arms, one of which extends through the slide groove.

[0007] As described above, a quick positioning fixture for finishing the end face of an irregularly shaped workpiece has a stepped hole in its body, a locking element that passes through the stepped hole, and a threaded hole that mates with the bolt in the machine tool spindle.

[0008] The beneficial effects of this utility model are:

[0009] 1. When clamping, the fixture body of this utility model first installs the auxiliary positioning component onto the workpiece, then inserts the auxiliary positioning component and the workpiece together into the positioning groove, ensuring that the auxiliary positioning component and the slide groove are aligned. Finally, the fixture body is locked onto the machine tool spindle by the locking component. The cooperation of the outer and inner conical surfaces allows the elastic clamping arms to retract and clamp the workpiece. The positioning groove enables the positioning of the side and end faces of the workpiece. The cooperation of the auxiliary positioning component and the slide groove ensures the correct installation angle of the workpiece, ensuring positioning accuracy and achieving fast and accurate positioning of the workpiece. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the quick positioning fixture of this utility model for clamping workpieces;

[0011] Figure 2 This is one of the exploded schematic diagrams of the quick positioning fixture of this utility model clamping the workpiece;

[0012] Figure 3 This is a full sectional view of the quick positioning fixture of this utility model clamping the workpiece;

[0013] Figure 4 This is the second exploded view of the quick positioning fixture of this utility model clamping the workpiece. Detailed Implementation

[0014] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0015] like Figures 1 to 4As shown, this utility model discloses a quick positioning fixture for precision machining of the end face of an irregularly shaped workpiece. It includes a fixture body 1, which has a clamping portion 11 for positioning a workpiece 1000. The clamping portion 11 has a positioning groove 101 for positioning the workpiece 1000. The positioning groove 101 includes an end face positioning surface 1011 that matches the end face of the workpiece 1000 and a side face positioning surface 1012 that matches the side face of the workpiece 1000. An auxiliary positioning element 2 is provided between the clamping portion 11 and the workpiece 1000. The auxiliary positioning element 2 is detachable. The clamping part 11 is detached and connected to the workpiece 1000. The clamping part 11 is provided with a sliding groove 102 that is slidably connected to the auxiliary positioning part 2. The sliding groove 102 is connected to the positioning groove 101. The clamping part 11 is provided with multiple dividing gaps 103 for dividing the clamping part 11 into several elastic clamping arms 111. The outer side of each elastic clamping arm 111 is provided with an outer tapered surface 104 that cooperates with the inner tapered surface 801 of the machine tool spindle 800. The clamping body 1 is also connected with a locking part 3 for locking the clamping body 1 to the machine tool spindle 800. When clamping, the fixture body of this utility model first installs the auxiliary positioning component onto the workpiece, then inserts the auxiliary positioning component and the workpiece together into the positioning groove, ensuring that the auxiliary positioning component and the slide groove are aligned. Finally, the fixture body is locked onto the machine tool spindle by the locking component. The cooperation of the outer and inner conical surfaces allows the elastic clamping arms to retract and clamp the workpiece. The positioning groove enables positioning of the side and end faces of the workpiece, and the cooperation of the auxiliary positioning component and the slide groove ensures the correct installation angle of the workpiece, ensuring positioning accuracy and achieving fast and accurate positioning of the workpiece.

[0016] In this embodiment, a positioning hole 1001 is provided on the side of the workpiece 1000. The auxiliary positioning component 2 includes a positioning pin 21 that can be inserted into the positioning hole 1001 and a positioning disc 22 that can be engaged in the slide groove 102. The positioning disc 22 is disc-shaped, and its diameter is equal to the width of the slide groove 102. In use, the positioning pin 21 is first inserted into the positioning hole 1001, and then the workpiece is inserted into the positioning groove, so that the positioning disc 22 is engaged in the slide groove 102 to ensure the correct installation angle of the workpiece.

[0017] In this embodiment, in order to ensure that each elastic clamping arm clamps the workpiece, the width of the dividing gap 103 is 1-3 mm.

[0018] In this embodiment, the clamping part 11 is provided with four dividing gaps 103 for dividing the clamping part 11 into four elastic clamping arms 111, one of which penetrates the slide groove 102. This has the advantages of accurate positioning and convenient processing.

[0019] In this embodiment, a stepped hole 105 is provided in the fixture body 1, and the locking member 3 is a bolt that passes through the stepped hole 105. The machine tool spindle 800 is provided with a threaded hole that mates with the bolt; this facilitates the connection between the fixture body 1 and the machine tool spindle 800 and enables quick clamping.

[0020] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A quick-positioning fixture for finishing the end face of irregularly shaped workpieces, characterized in that, The fixture includes a clamp body (1), which has a clamping part (11) for positioning a workpiece (1000). The clamping part (11) has a positioning groove (101) for positioning the workpiece (1000). The positioning groove (101) includes an end face positioning surface (1011) that matches the end face of the workpiece (1000) and a side face positioning surface (1012) that matches the side face of the workpiece (1000). An auxiliary positioning element (2) is provided between the clamping part (11) and the workpiece (1000). The auxiliary positioning element (2) is detachably connected to the workpiece (1000). The clamping part (11) is provided with a sliding groove (102) that is slidably connected to the auxiliary positioning member (2). The sliding groove (102) is connected to the positioning groove (101). The clamping part (11) is provided with multiple dividing gaps (103) for dividing the clamping part (11) into several elastic clamping arms (111). The outer side of each elastic clamping arm (111) is provided with an outer conical surface (104) that cooperates with the inner conical surface (801) of the machine tool spindle (800). The clamping body (1) is also connected with a locking member (3) for locking the clamping body (1) on the machine tool spindle (800).

2. The quick positioning fixture for finishing the end face of irregularly shaped workpieces according to claim 1, characterized in that, The workpiece (1000) has a positioning hole (1001) on its side. The auxiliary positioning component (2) includes a positioning post (21) that can be inserted into the positioning hole (1001) and a positioning disk (22) that can be inserted into the slide groove (102). The positioning disk (22) is disc-shaped and its diameter is equal to the width of the slide groove (102).

3. A quick positioning fixture for finishing the end face of irregularly shaped workpieces according to claim 1, characterized in that, The width of the dividing gap (103) is 1-3 mm.

4. A quick positioning fixture for finishing the end face of irregularly shaped workpieces according to claim 2 or 3, characterized in that, The clamping part (11) is provided with four dividing gaps (103) for dividing the clamping part (11) into four elastic clamping arms (111), one of which is through the slide groove (102).

5. A quick positioning fixture for finishing the end face of irregularly shaped workpieces according to claim 4, characterized in that, The fixture body (1) is provided with a stepped hole (105), the locking member (3) is a bolt that passes through the stepped hole (105), and the machine tool spindle (800) is provided with a threaded hole that mates with the bolt.

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