Motorcycle handlebar tube connecting seat direction column hole machining clamp

Abstract

The utility model provides a motorcycle handlebar tube connecting seat direction column hole machining clamp which comprises a base frame, a positioning mechanism, a centering mechanism and a clamping mechanism. The base frame comprises an upper base plate, a lower base plate and supporting columns. The positioning mechanism is arranged in the center of the upper substrate and is coaxial with the through hole in the center of the upper substrate; the centering mechanism is arranged at the bottom of the upper base plate and comprises a core rod and an air cylinder I; a piston of the air cylinder I is upwards and vertically fixed on the bottom surface of the upper base plate; the two clamping mechanisms are arranged on the left side and the right side of the supporting column in a mirror symmetry mode, and each clamping mechanism comprises a clamping head, an air cylinder II, a trapezoidal sliding base and an air cylinder base. The boring tool has the advantages that on the premise that the axis of the steering column hole of the connecting base blank and the axis of the boring tool are guaranteed to be coaxial, the connecting base blank can be conveniently clamped and fixed, and the problem that the steering column hole of the connecting base blank is bored on one side is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motorcycle handlebar tube connecting seat direction column hole processing technology, especially to a motorcycle handlebar tube connecting seat direction column hole processing clamp. BACKGROUND

[0002] The motorcycle handlebar tube connecting seat is a connecting piece between the motorcycle handlebar and the direction column, and its shape is relatively complex; one end is a through hole (usually called direction column hole) sleeved on the direction column, the other end is a cylindrical rod inserted into the inner hole of the handlebar tube, and the two are connected together through a connecting plate, and the axes of the two are arranged at a set angle. In addition, a locking step is arranged on the opposite side of the cylindrical rod, and a locking gap and a locking screw hole are further arranged on the locking step (see attached Figure 1 、 2 ) The blank of the motorcycle handlebar tube connecting seat (hereinafter referred to as connecting seat blank) is usually an aluminum alloy die casting part, which is formed into a set shape by aluminum alloy die casting, and then is machined to meet the design requirements (see attached Figure 3 ) Due to the large direction column hole on the motorcycle handlebar tube connecting seat, the boring processing method is usually used for processing, that is, the connecting seat blank is clamped and fixed on the workbench surface of the boring machine, and the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter; then, the inner wall surface of the direction column hole of the connecting seat blank is bored. In order to save raw materials and reduce subsequent processing passes, the remaining machining allowance of the connecting seat blank is small when the connecting seat blank is processed by die casting; in addition, the process error of die casting processing makes the machining allowance of the direction column hole of the connecting seat blank small and unstable. Therefore, when the connecting seat blank is clamped and fixed on the workbench surface, it is required that the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter to ensure that the connecting seat blank will not be eccentric when clamped and fixed, so as to cause the boring processing of the direction column hole of the connecting seat blank to be "one-sided" (that is, a part of the inner wall of the direction column hole of the connecting seat blank is not machined, forming a "black edge").

[0003] The prior art motorcycle handlebar tube connecting seat direction column hole processing method uses a modified three-jaw chuck to clamp and fix the connecting seat blank. Since the shape of the connecting seat blank is extremely irregular, it is difficult to ensure that the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter, thereby causing the boring processing of the direction column hole of the connecting seat blank to be "one-sided". Obviously, the prior art motorcycle handlebar tube connecting seat direction column hole processing method has the problems that it is difficult to ensure that the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter, thereby causing the boring processing of the direction column hole of the connecting seat blank to be "one-sided". SUMMARY

[0004] In order to solve the problem that the axis of the direction column hole of the connecting seat blank is difficult to be coaxial with the axis of the boring cutter in the motorcycle handlebar pipe connecting seat direction column hole processing method of the prior art, thereby causing the boring processing of the direction column hole of the connecting seat blank to be "one side", the utility model provides a motorcycle handlebar pipe connecting seat direction column hole processing clamp.

[0005] The utility model motorcycle handlebar pipe connecting seat direction column hole processing clamp, include, base frame, positioning mechanism, centering mechanism and clamping mechanism, the base frame includes, upper base plate, lower base plate and support column, the upper base plate and lower base plate constitute frame structure through four support columns, and be provided with through -hole in the upper base plate center, the positioning mechanism sets up in the upper base plate center, and with the upper base plate center through -hole coaxial, include, support column and locking step column, the support column is hollow cylinder, its inner diameter is larger than the inner diameter of the direction column hole of the connecting seat blank, and the outer diameter is larger than the outer diameter of the direction column hole of the connecting seat blank, the locking step column is rectangle, sets up in the rear side of support column, is provided with rectangular cavity in the front side of locking step column, and the shape and size of rectangular cavity match with the locking step of connecting seat blank, the setting position and height of locking step column are just placed in the rectangular cavity of locking step column with the connecting seat blank coaxial inversion on the support column, the locking step of connecting seat blank just, the rectangular cavity of locking step column is accurate, the centering mechanism sets up in the bottom of upper base plate, include, core rod and cylinder I, the cylinder I piston is vertically fixed in the bottom surface of upper base plate upwards, the diameter of core rod matches with the inner diameter of the direction column hole of the connecting seat blank, and is connected in the cylinder I piston end head through the upper base plate center through -hole, the clamping mechanism is two, mirror image symmetry sets up in the left and right sides of support column, include, clamping head, cylinder II, trapezoidal slide and cylinder seat, the trapezoidal slide is fixed in the left and right sides of support column, the clamping head is rectangle board, is provided with V type gap in the front end of clamping head, is provided with trapezoidal slide way in the bottom of clamping head, and is installed on the trapezoidal slide through trapezoidal slide way, the cylinder seat is fixed in the outside of trapezoidal slide way, the cylinder II is fixed on the cylinder seat, and the piston end head is fixedly connected with the rear end of clamping head.

[0006] Further, the upper end of the core rod is provided with a taper, and the angle of the taper is 0.5-1.0°.

[0007] Further, the opening angle of the V-shaped gap in the front end of the clamping head is 90-120°.

[0008] The motorcycle handlebar pipe connecting seat direction column hole processing clamp has the beneficial technical effects that the connecting seat blank can be clamped and fixed conveniently under the premise that the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter, and the boring processing of the direction column hole of the connecting seat blank is solved. BRIEF DESCRIPTION OF DRAWINGS

[0009] ATTACHED Figure 1is a three-dimensional schematic view of a motorcycle handlebar tube connecting seat;

[0010] attached Figure 2 is a three-dimensional schematic view of another angle of the motorcycle handlebar tube connecting seat;

[0011] attached Figure 3 is a three-dimensional schematic view of a motorcycle handlebar tube connecting seat blank;

[0012] attached Figure 4 is a three-dimensional schematic view of the motorcycle handlebar tube connecting seat direction column hole processing fixture of the utility model;

[0013] attached Figure 5 is a three-dimensional schematic view of another angle of the motorcycle handlebar tube connecting seat direction column hole processing fixture of the utility model;

[0014] attached Figure 6 is a three-dimensional schematic view of the processing fixture after placing the connecting seat blank of the utility model;

[0015] attached Figure 7 is a three-dimensional schematic view of the connecting seat blank of the processing fixture of the utility model being clamped;

[0016] attached Figure 8 is a three-dimensional schematic view of the processing state of the processing fixture of the utility model.

[0017] In the figure, 1 is a base frame, 1-1 is an upper base plate, 1-2 is a lower base plate, and 1-3 is a support column; 2 is a positioning mechanism, 2-1 is a support column, and 2-2 is a locking step column; 3 is a centering mechanism, 3-1 is a core rod, and 3-2 is a cylinder I; 4 is a clamping mechanism, 4-1 is a clamping head, 4-2 is a cylinder II, 4-3 is a trapezoidal slide, and 4-4 is a cylinder seat; A is a connecting seat blank.

[0018] The motorcycle handlebar tube connecting seat direction column hole processing fixture of the utility model will be further described below in combination with the accompanying drawings and specific embodiments. Specific embodiments

[0019] Referring to the accompanying drawings, Figure 4 , 5The utility model motorcycle handlebar pipe connecting seat direction column hole processing clamp, including, base frame 1, positioning mechanism 2, centering mechanism 3 and clamping mechanism 4, the base frame includes, upper base plate 1-1, lower base plate 1-2 and support column 1-3, the upper base plate and lower base plate constitute frame structure through four support columns, and be provided with through -hole in the upper base plate center, the positioning mechanism is set up in the upper base plate center, and with the upper base plate center through -hole coaxial, including, support column 2-1 and locking step column 2-2, the support column is hollow cylinder, its inner diameter is larger than the inner diameter of connecting seat blank direction column hole, and the outer diameter is larger than the outer diameter of connecting seat blank direction column hole, the locking step column is rectangle, sets up in support column rear side, is provided with rectangular cavity in the front side of locking step column, and the shape and size of rectangular cavity are matched with the locking step of connecting seat blank, the setting position and height of locking step column are with the connecting seat blank coaxial inversion on support column after, the locking step of connecting seat blank just places in the rectangular cavity of locking step column for accurate, the centering mechanism sets up in the upper base plate bottom, including, core rod 3-1 and cylinder I 3-2, the cylinder I piston is vertically fixed in the upper base plate bottom surface upwards, the diameter of core rod is matched with the inner diameter of connecting seat blank direction column hole, and is connected in the cylinder I piston end head through the upper base plate center through -hole, the clamping mechanism is two, mirror image symmetry sets up in support column left and right sides, including, clamping head 4-1, cylinder II 4-2, trapezoidal slide 4-3 and cylinder seat 4-4, the trapezoidal slide is fixed in support column left and right sides, the clamping head is rectangle board, is provided with V type gap in the front end of clamping head, is provided with trapezoidal slide way in the bottom of clamping head, and is installed on trapezoidal slide through trapezoidal slide way, the cylinder seat is fixed in the outside of trapezoidal slide way, the cylinder II is fixed on cylinder seat, and piston end head is fixedly connected with clamping head rear end, when using, the utility model processing clamp is fixed coaxially on boring machine workbench surface (i.e. the center through -hole of upper base plate and boring machine rotation shaft are coaxial), the connecting seat blank is inverted coaxially on support column, thus, realize the basic positioning of connecting seat blank, open cylinder I, and the piston of cylinder I moves upwards and top into the core rod in the direction column hole of connecting seat blank, thus, realize the axis of connecting seat blank direction column hole and boring tool axis coaxial (see attached Figure 6 ), open cylinder II, and the piston of cylinder II pushes the clamping head and moves forward until clamping the outer circle of connecting seat blank, thus, realize the clamping fixation of connecting seat blank (see attached Figure 7 ), because clamping mechanism sets up in support column's left and right sides, and all are cylinder drive, thus, will not be influenced by the size tolerance of connecting seat blank outer circle, and guarantee the axis of connecting seat blank direction column hole and boring tool axis coaxial, open cylinder I, and the piston of cylinder I moves downwards, and drives the core rod to exit from the direction column hole of connecting seat blank (see attached Figure 8The boring machine is started, and the direction column hole of the connecting seat blank can be processed. Since the core rod of the centering mechanism precisely positions the direction column hole of the connecting seat blank before clamping and fixing, the direction column hole of the connecting seat blank after clamping and fixing can be coaxial with the boring cutter axis, so that the boring processing of the direction column hole of the connecting seat blank can not appear "one side" phenomenon.

[0020] As one of the preferred technical solutions, the upper end of the core rod is provided with a taper, and the angle of the taper is 0.5-1.0°. In this way, the connecting seat blanks with different size tolerances can be satisfied, and the direction column hole of the connecting seat blank can be better guaranteed to be coaxial with the boring cutter axis.

[0021] As one of the preferred technical solutions, the opening angle of the V-shaped notch at the front end of the clamping head is 90-120°. In this way, the connecting seat blank can be stably clamped, and is not affected by the size tolerance of the outer circle of the connecting seat blank.

[0022] Obviously, the beneficial technical effects of the motorcycle handlebar pipe connecting seat direction column hole processing clamp are that the connecting seat blank can be conveniently clamped and fixed under the premise that the axis of the direction column hole of the connecting seat blank is coaxial with the axis of the boring cutter, and the problems of boring processing "one side" of the direction column hole of the connecting seat blank are solved.

Claims

1. A jig for machining the steering column hole of a motorcycle handlebar tube connector, characterized in that, The machining fixture includes a base frame, a positioning mechanism, a centering mechanism, and a clamping mechanism; the base frame includes... The upper substrate, the lower substrate, and the support pillars; the upper substrate and the lower substrate form a frame structure through four support pillars, and a through hole is provided in the center of the upper substrate; the positioning mechanism is located in the center of the upper substrate and is coaxial with the through hole in the center of the upper substrate. The system includes a support column and a locking step column. The support column is a hollow cylinder with an inner diameter larger than the inner diameter of the column hole in the connecting seat blank and an outer diameter larger than the outer diameter of the column hole in the connecting seat blank. The locking step column is rectangular and is located behind the support column. A rectangular cavity is provided on the front side of the locking step column, and the shape and size of the rectangular cavity match the locking step of the connecting seat blank. The position and height of the locking step column are such that when the connecting seat blank is coaxially inverted on the support column, the locking step of the connecting seat blank is placed exactly within the rectangular cavity of the locking step column. The centering mechanism is located at the bottom of the upper base plate and includes a core rod and cylinder I. The piston of cylinder I is vertically fixed upwards. The core rod is fixed on the bottom surface of the upper substrate; the diameter of the core rod matches the inner diameter of the direction column hole of the connecting seat blank, and passes through the central through hole of the upper substrate to connect to the piston end of cylinder I; there are two clamping mechanisms, mirror-symmetrically arranged on the left and right sides of the support column, including a clamping head, cylinder II, trapezoidal slide, and cylinder seat; the trapezoidal slide is fixed on the left and right sides of the support column; the clamping head is a rectangular plate with a V-shaped notch at the front end and a trapezoidal slide at the bottom, and is mounted on the trapezoidal slide through the trapezoidal slide; the cylinder seat is fixed on the outside of the trapezoidal slide; cylinder II is fixed on the cylinder seat, and the piston end is fixedly connected to the rear end of the clamping head.

2. The jig for machining the direction post hole of the motorcycle handlebar tube connector according to claim 1, characterized in that, The upper end of the core rod is tapered, and the angle of the tapered angle is 0.5 to 1.0°.

3. The jig for machining the direction post hole of the motorcycle handlebar tube connector according to claim 1 or 2, characterized in that, The opening angle of the V-shaped notch at the front end of the clamping head is 90-120°.

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