Fixture for thin-wall workpiece with large cutting output

Abstract

The utility model discloses a thin-wall workpiece fixture for cutting output, which comprises a body, a positioning disc, a spring, a positioning sleeve, a retainer ring and a gland, the positioning disc is connected to the body through a bolt, the spring is arranged outside a sliding seat at the front end of the positioning disc in a penetrating manner, the positioning sleeve is arranged on the outer side of the sliding seat at the front end of the positioning disc in a sliding manner, and the retainer ring is arranged on the gland. The check ring is fixed to the positioning disc and limits and blocks the positioning sleeve at the front end of the positioning sleeve, and the gland is arranged in front of the positioning sleeve and moves forwards along with the pull rod. The utility model belongs to the technical field of clamp equipment, particularly relates to a clamp for a thin-wall workpiece with large cutting output, and effectively solves the problems that the thin-wall workpiece clamp is low in workpiece clamping precision, and the workpiece is not tightly clamped and rotates.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamp equipment, in particular to a clamp for thin-walled workpieces with large cutting volume. Background Art

[0002] In the field of mechanical processing, thin-walled cylindrical workpieces are one of the difficulties in turning. Due to their thin walls, the processing rigidity is poor and processing deformation is very likely to occur, which increases the shape and position errors of the parts and makes it difficult to guarantee the processing quality of the workpiece.

[0003] In order to improve the coaxial accuracy of the workpiece processing part and the inner hole; increase the cutting amount, ensure the strength of the tooling and prevent the workpiece from rotating, a fixture for thin-walled workpieces with large cutting amount is proposed. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model proposes a thin-walled workpiece clamp for large cutting volume, which effectively solves the problems of low clamping precision of the thin-walled workpiece clamp, loose clamping of the workpiece, and rotation of the workpiece.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a thin-walled workpiece clamp for a large cutting amount, comprising a main body, a positioning plate, a spring, a positioning sleeve, a retaining ring and a pressure cover. The positioning plate is connected to the main body by bolts, the spring is arranged outside the front end slide of the positioning plate, the positioning sleeve is slidably arranged on the outside of the front end slide of the positioning plate, the retaining ring is fixed on the positioning plate and limits the positioning sleeve at the front end of the positioning sleeve, and the pressure cover is arranged in front of the positioning sleeve and moves forward with the pull rod.

[0006] Preferably, the locating sleeve and the workpiece are tapered to ensure that the workpiece and the locating sleeve are matched without clearance, thereby improving the coaxiality between the outer circle processed part of the workpiece and the inner hole of the workpiece.

[0007] In order to better achieve the effect of pressurized fixation, the pressure cover is fixed to the front end of the machine tool cylinder rod, and the pressure cover is pulled to the left for compaction and fixation.

[0008] In order to achieve the clamping and fixing effect more quickly, the positioning sleeve can slide axially on the main body, but is limited by a key in the circumferential direction and cannot rotate. Under the action of the spring, the positioning sleeve will move to the right to the retaining ring position.

[0009] Furthermore, the positioning sleeve has a taper, and the workpiece will drive the positioning sleeve to move to the left until the workpiece is firmly attached to the end surface of the positioning plate.

[0010] The beneficial effects achieved by the utility model using the above structure are as follows: the scheme proposes a fixture for thin-walled workpieces with large cutting volume, which improves the coaxial accuracy of the workpiece processing part and the inner hole; increases the processing cutting volume, ensures the strength of the tooling and prevents the workpiece from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model provides a schematic cross-sectional structure diagram of a fixture for thin-walled workpieces with large cutting volume.

[0012] Among them, 1. body, 2. positioning plate, 3. spring, 4. positioning sleeve, 5. retaining ring, 6. pressure cover.

[0013] 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 to the present invention. DETAILED DESCRIPTION

[0014] 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.

[0015] like Figure 1 As shown, the utility model proposes a thin-walled workpiece clamp for large cutting volume, including a main body 1, a positioning plate 2, a spring 3, a positioning sleeve 4, a retaining ring 5 and a pressure cover 6. The positioning plate 2 is connected to the main body 1 by bolts, and the spring 3 is arranged outside the front end slide of the positioning plate 2. The positioning sleeve 4 is slidably arranged on the outside of the front end slide of the positioning plate 2. The retaining ring 5 is fixed on the positioning plate 2 and limits the positioning sleeve 4 at the front end of the positioning sleeve 4. The pressure cover 6 is arranged in front of the positioning sleeve 4 and moves forward with the pull rod.

[0016] like Figure 1 As shown, the locating sleeve 4 and the workpiece are tapered to ensure that the workpiece and the locating sleeve 4 are matched without clearance, thereby improving the coaxiality between the outer circle of the workpiece and the inner hole of the workpiece.

[0017] like Figure 1 As shown, the pressure cover 6 is fixed to the front end of the machine tool cylinder rod, and the pressure cover 6 is pulled to the left to be compacted and fixed.

[0018] like Figure 1 As shown, the positioning sleeve 4 can slide axially on the body 1, but is limited by a key in the circumferential direction and cannot rotate. Under the action of the spring 3, the positioning sleeve 4 will move to the right to the position of the retaining ring 5.

[0019] like Figure 1 As shown, the positioning sleeve 4 is tapered, and the workpiece will drive the positioning sleeve 4 to move to the left until the workpiece is firmly attached to the end surface of the positioning plate 2.

[0020] During specific use, the user places the workpiece on the positioning sleeve 4 and presses the pressure cover 6 onto the workpiece. The pull rod will move to the left as shown in the figure under the pulling force of the machine tool cylinder, thereby driving the pressure cover 6 to press the workpiece to the end face of the positioning disk 2. The positioning sleeve 4 is tapered, so the workpiece will drive the positioning sleeve 4 to move to the left as shown in the figure until the workpiece and the end face of the positioning disk 2 are firmly attached. At this time, the positioning sleeve 4 and the workpiece are still not fitted without clearance. At this time, the workpiece clamping has been completed, the machine tool can be started, and the outer circle of the workpiece can be processed. After processing is completed, the machine tool cylinder will be loosened, and the pull rod will move to the right as shown in the figure. The workpiece and the pressure cover 6 will move to the right at the same time. At this time, remove the pressure cover 6 and the workpiece, and a processing cycle is completed.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0023] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A fixture for thin-walled workpieces with large cutting volume, characterized by: The cam is secured to the body by a spring which is fixed to the front of the cam and secured to the workpiece so that the cam can be locked to the workpiece without any loosening of the threads which have been cut off.

2. A fixture for thin-walled workpieces with large cutting volume according to claim 1, characterized in that: The pressure cover is fixed to the front end of the machine tool oil cylinder pull rod, and the pressure cover is pulled to the left to be compacted, fitted and fixed.

3. A fixture for thin-walled workpieces with large cutting volume according to claim 2, characterized in that: The positioning sleeve is tapered, and the workpiece will drive the positioning sleeve to move to the left until the workpiece is firmly attached to the end surface of the positioning plate.

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