Positioning clamp for machining thin-wall cartridge receiver type parts

Abstract

The utility model belongs to the technical field of auxiliary clamping devices for machining, and particularly relates to a positioning clamp for machining thin-wall casing parts. Comprising a bottom plate; the mounting plate is arranged on the bottom plate; the expansion block seat is provided with two mounting surfaces and is L-shaped; the vertical mounting surface is fixed on the mounting plate, the horizontal mounting surface is provided with a driving screw, and the upper end of the driving screw is in contact with the bottom surface of the expansion block; the expansion block is arranged on the expansion block seat; the base is fixed on a vertical mounting surface; the upper end face of the expansion block is an arc face and is driven by the driving screw to abut against the inner wall face of the part. The positioning plate is fixed on the mounting plate; a pressing plate is arranged on the positioning plate, arc-shaped protruding edges are arranged at the upper end and the lower end of the pressing plate respectively, and the edges at the lower end tightly press the protruding edges of the part. A plurality of expansion block seats and positioning plates are arranged on the mounting plate and are distributed in a staggered mode in the circumferential direction. According to the utility model, the problem that the machining efficiency is influenced and the machining precision is improved due to deformation caused by lower rigidity of thin-wall parts in the machining process is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of auxiliary clamping device of machining, specifically relates to a positioning fixture of processing thin -walled machine case class spare. BACKGROUND

[0002] The processing feature on the thin -walled spare, thin -walled machine case class straight -cylinder type spare is as a kind of more common mechanical parts, its because effectively save material and lighter in weight, greater strength is widely used.But in the machining process, thin -walled class spare produces deformation due to low rigidity, influence machining efficiency and spare machining precision.And in actual production process, the precision requirement of thin -walled machine case class spare is higher, and the production quantity is huge, thus design a kind of scheme to solve the machining deformation of thin -walled machine case class spare, and the problem of improving machining precision becomes the problem to be solved urgently. UTILITY MODEL CONTENTS

[0003] To solve the above technical problem, the utility model provides a positioning fixture of processing thin -walled machine case class spare, including,

[0004] Bottom plate, is installed on machine tool;

[0005] Mounting plate, is set up on the bottom plate;

[0006] Rise block seat, has two installation surfaces, and is L-shaped;Vertical installation surface is fixed on mounting plate, horizontal installation surface is set up on the drive screw, and the drive screw upper end is in contact with the bottom surface of rise block;

[0007] Rise block, is set up on rise block seat, and is provided with long screw hole;The long screw hole is provided with rise block fixing screw, and the rise block is fixed on the vertical installation surface;The upper end surface of rise block is arc, and is tightly pressed with the inner wall surface of part by the drive of drive screw;

[0008] Positioning plate, is fixed on mounting plate;Positioning plate is provided with pressing plate, and the upper end and the lower end of the pressing plate are respectively provided with arc convex edge, and the edge of lower end is tightly pressed with the convex edge of part;

[0009] The mounting plate is provided with a plurality of rise block seats and positioning plates, and the two are staggered distributed along the circumferential direction.

[0010] Further, the rise block seat and the mounting plate are provided with a cylindrical pin.

[0011] Further, the diameter of the upper end surface arc of the rise block can be multiple sizes.

[0012] Further, a guide sliding table is arranged on the rise block, and a guide sliding groove is arranged on the rise block seat for positioning and installation.

[0013] Further, the positioning plate is welded on the mounting plate;The mounting plate is welded on the bottom plate.

[0014] The utility model discloses a high-precision positioning fixture for processing thin-wall machine case parts, which solves the deformation of the thin-wall machine case parts caused by low rigidity during the processing, improves the machining efficiency and machining precision. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the structural schematic diagram of the utility model;

[0016] Figure 2 is the side view structural schematic diagram of the utility model;

[0017] Figure 3 is the structural schematic diagram of one embodiment of the expansion block seat;

[0018] Figure 4 is the structural schematic diagram of one embodiment of the expansion block;

[0019] Figure 5 is the structural schematic diagram of one embodiment of the positioning plate;

[0020] Figure 6 is the structural schematic diagram of one embodiment of the pressing plate. DETAILED DESCRIPTION

[0021] The principles and features of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not to limit the scope of the utility model.

[0022] REFERENCE Figures 1-6 A positioning fixture for processing thin-wall machine case parts, comprising a base plate 1, a mounting plate 2, a positioning plate 3, a pressing plate 4, an expansion block seat 5, an expansion block 6, an M10X40 internal hexagonal screw 7, an M10X55 internal hexagonal screw 8, a cylindrical pin 9 and a drive screw 10. Among them,

[0023] The base plate 1 is mounted on a machine tool.

[0024] The mounting plate 2 is arranged on the base plate 1.

[0025] The expansion block seat 5 has two mounting surfaces and is in the shape of L; the vertical mounting surface is fixed on the mounting plate, and the horizontal mounting surface is provided with a drive screw; the upper end of the drive screw 10 is in contact with the bottom surface of the expansion block.

[0026] The expansion block 6 is arranged on the expansion block seat and is provided with a long threaded hole; the long threaded hole is provided with an expansion block fixing screw, which fixes the expansion block on the vertical mounting surface; the upper end surface of the expansion block is arc-shaped and is in contact with the inner wall surface of the part 11 through the driving of the drive screw.

[0027] Positioning plate 3, fixed on the mounting plate; the positioning plate is provided with a pressing plate 4, the upper end and the lower end of the pressing plate are respectively provided with arc convex edges, the edge of the lower end is pressed against the convex edge of the part;

[0028] The mounting plate is provided with a plurality of expansion block seats and positioning plates, which are staggered and distributed in the circumferential direction to form a plurality of clamping and fixing units.

[0029] As an improvement of the scheme, a cylindrical pin is arranged between the expansion block seat and the mounting plate for positioning.

[0030] As an improvement of the scheme, the upper end face arc surface diameter of the expansion block can be of multiple sizes. Within a certain range, by replacing expansion blocks of different R sizes, a clamping fixture for parts of different sizes is realized, thereby reducing production cost and increasing efficiency.

[0031] As an improvement of the scheme, a guide sliding table is arranged on the expansion block, and a guide sliding groove is arranged on the expansion block seat for positioning and mounting.

[0032] As an improvement of the scheme, the positioning plate is welded on the mounting plate; the mounting plate is welded on the bottom plate.

[0033] The use method of the quick and simple inner expansion clamp for processing thin-walled parts is as follows: the clamp is fixed on the machine tool used, the center of the clamp is aligned through the reference A surface, the guide sliding table on the expansion block is put into the guide sliding groove of the expansion block seat to fit the expansion block seat, and the expansion block fixing screw 8 is lightly tightened. The part to be processed is installed on the clamp as shown, the part is aligned by lightly pressing the pressing plate 4; the pressing plate 4 is pressed tightly, the driving screw is tightened to drive the expansion block 7 to move upward in the direction of the guide sliding groove to tightly fit the part, and the expansion block fixing screw is tightened. After processing the wire harness, sequentially loosen the expansion block fixing screw, the driving screw, remove the pressing plate, and then remove the processed part.

[0034] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning fixture for machining thin-walled casing-type parts, characterized in that, The utility model relates to a kind of machine tool clamping device, including, Bottom plate, set on machine tool; Mounting plate, set on bottom plate; Expansion block seat, with two installation surfaces, L shape;Vertical installation surface is fixed on mounting plate, horizontal installation surface is set on set drive screw, the upper end of the drive screw is in contact with the bottom surface of expansion block; Expansion block, set on expansion block seat, set with long thread hole on top;Expansion block fixing screw is set in the long thread hole, expansion block is fixed on vertical installation surface;The upper end surface of expansion block is arc, and is clamped to the inner wall surface of part by the drive of drive screw; Positioning plate, fixed on mounting plate;Positioning plate is set with pressing plate, and the upper end and the lower end of the pressing plate are respectively set with arc convex edge, and the edge of lower end is clamped to the convex edge of part; The mounting plate is set with multiple expansion block seats and positioning plates, and the two are staggered distribution along the circumferential direction.

2. A fixture for holding thin-walled, box-shaped parts during machining, according to claim 1, characterized in that Cylinder pin is set between the expansion block seat and the mounting plate.

3. A fixture for holding thin-walled, box-shaped parts for machining according to claim 1, characterized in that The diameter of the upper end surface arc of the expansion block can be multiple sizes.

4. A fixture for holding thin-walled, box-shaped parts for machining according to claim 1, characterized in that Guide sliding platform is set on expansion block, and guide sliding groove is set on expansion block seat for positioning installation.

5. A fixture for holding thin-walled, box-shaped parts for machining according to claim 1, characterized in that The positioning plate is welded on the mounting plate;The mounting plate is welded on the bottom plate.

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