CN210967339U - Horizontal aligning device of vertical machining center - Google Patents

Abstract

The utility model discloses a horizontal alignment device for a vertical machining center, which is characterized in that the upper part of the handle body is a taper shank, the shape of the taper shank is consistent with the shape of the tool shank, the handle body is provided with a guiding inner cavity, and the guiding inner cavity is vertical A guide pin hole is arranged in the direction, a guide inner hole is arranged at the upper end of the pressure rod, and a horizontal installation inner hole is arranged at the lower end of the pressure rod; There is a compression spring between the upper end of the inner cavity, the rod body of the compression rod and the guide inner cavity are gap-fitted, the center line of the handle body coincides with the center line of the compression rod, and the compression rod is connected with the horizontal leveling block through the horizontal installation inner hole, and the horizontal alignment Both ends of the bottom of the flat block are respectively provided with spacers in the same horizontal and equal height state. The utility model is similar to the use of tools. The machine tool is automatically called out from the tool magazine and then participates in the leveling of the workpiece. After leveling, it is withdrawn and returned to the tool magazine to change other tools to process the workpiece, so that the leveling and processing of the workpiece are automatically completed. ,Increase productivity.

Description

A horizontal alignment device for a vertical machining center

technical field

The utility model belongs to the technical field of mechanical equipment, and relates to a motorized leveling device for workpieces used in a vertical machining center.

Background technique

As a pillar industry, the automobile industry is produced in large quantities everywhere. As its main component, the rear axle housing is a cavity structure, and the plane where it is assembled with the main reducer needs to be machined with threaded holes. As the structure of CNC equipment is processed more and more widely by vertical machining centers.

When the workpiece is processing threaded holes, its processing plane must be level, otherwise the processed threaded holes are not perpendicular to the assembly plane, and it will not be assembled; at present, most of the leveling fixtures are manually leveled and then removed from the leveling mechanism. The automatic machining of workpieces is started, which reduces the production efficiency of the machining center and increases the labor burden.

In view of this, there are many innovations in the prior art in trying to use motorized alignment, such as CN201810193301.9 "A Correction Method and Device for Horizontally Placing Vertical Machining Centers", but it can only be assembled and placed in vertical machining center equipment When the whole vertical machining center is calibrated, the leveling operation is carried out. Another example is CN201110107896.X "Face Milling Cutter Tool Setting Device for CNC Machining Center", which is only suitable for blade installation and adjustment and blade height measurement of face milling cutters of various sizes in CNC machining centers.

Relatively able to solve the problem of motor alignment, such as CN201210170359.4 "Machining Center Correction Fixture", including shaft, radial support and moving slider, the radial support is fixed at the end of the shaft, and the moving slider is installed on the shaft through a locking mechanism. On the radial bracket, install the dial indicator on the moving slide. The calibration fixture is installed on the tool handle, which can quickly align the center of the hole and has high efficiency.

Another example is CN201320395708.2 "A Rapid Proofing Device for Machining Center", the machining center platform is provided with an installation groove, and a positioning structure and a pressure block are installed in the installation groove; the bottom of the positioning structure is provided with an inclined surface opening, and the two sides of the pressure block are connected to the inclined surface. The sloping surface structure is slidingly matched with the opening. The sloping surface structure is in contact with the opening of the sloping surface. The top of the positioning structure is clamped in the installation slot, and a through hole is provided on it. The top of the pressing block is provided with a connecting hole corresponding to the through hole. The fixing piece is connected with the through hole of the positioning structure and the connecting hole of the pressing block, and then tightened downward to expand the opening of the inclined plane to fix the positioning structure on the platform of the machining center; the two sides of the top of the positioning structure are set for correcting the position of the material to be processed. noodle.

One of the two existing technologies is that the dial gauge finds the center of the alignment hole, and the other is that the positioning structure is accurately positioned in the installation groove of the machining center platform, so that the assembly of the entire machining center rapid calibration device can be completed.

The utility model takes a different approach. First, a similar tool alignment device is used, which is installed on the tool magazine and participates in the leveling of the workpiece. After leveling, the tool is changed to process the workpiece.

Utility model content

The purpose of the utility model is to provide a similar tool aligning device, that is, a device for horizontally aligning workpieces in a vertical machining center, so that the leveling workpieces of the rear axle housing are automatically performed by the equipment.

The technical scheme of the present utility model:

A horizontal alignment device for a vertical machining center, comprising a shank body, a compression spring, a guide pin, a horizontal leveling block, a spacer block and a pressure rod. A guide inner cavity is arranged in the body, a guide pin hole is arranged in the vertical direction on the guide inner cavity, a guide inner hole is arranged at the upper end of the pressure rod, and a horizontal installation inner hole is arranged at the lower end of the pressure rod;

The guide pin passes through the guide inner hole of the pressure rod and is connected to the guide pin hole of the handle body. The upper and lower limit positions between the guide pin and the guide inner hole are provided. A compression spring is arranged between the head of the pressure rod and the upper end of the guide cavity. Clearly matched with the guide cavity, the center line of the handle body coincides with the center line of the pressure rod. The pressure rod is connected to the horizontal leveling block through the horizontal installation inner hole. The bottom ends of the horizontal leveling block are respectively provided with spacers, two The pads are at the same level and the same height.

Further, the main body of the guiding inner cavity is a cylindrical inner cavity, the inner cylindrical cavity is provided with a guiding pin hole, and the axis of the inner cylindrical cavity is perpendicular to the axis of the guiding pin hole.

Further, the upper end of the pressing rod is a guide body, and the lower end is a horizontal connecting body. The guiding body is provided with a guiding inner hole, the axis of the guiding body is perpendicular to the centerline of the guiding inner hole, and the horizontal connecting body is provided with a horizontal installation inner hole.

Further, the installation end of the horizontal leveling block is positioned through the horizontal installation inner hole of the pressing rod and fixed by bolts.

The utility model adopts a motorized leveling device, which is similar to the use of tools and is installed on the tool magazine. After being automatically called out by the machine tool, it participates in the workpiece leveling. Process the workpiece, so that the leveling and processing of the workpiece are completed by the automatic operation of the equipment, which improves the production efficiency and reduces the labor burden.

Description of drawings

1 is a schematic structural diagram of a horizontal alignment device for a vertical machining center according to Embodiment 1 of the present invention.

FIG. 2 is a schematic view of the front structure of the pressing rod 6 according to the first embodiment of the present invention.

FIG. 3 is a left view structural schematic diagram of the pressing rod 6 according to Embodiment 1 of the present invention.

Detailed ways

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

Embodiment 1: The horizontal alignment device of a vertical machining center includes a handle body 1, a compression spring 2, a guide pin 3, a horizontal leveling block 4, a spacer block 5, a compression rod 6 and the like.

The shank body 1 is connected with the main shaft of the machining center through the taper shank pull stud to realize the automatic operation of tool change; the horizontal leveling block 4 is fixedly connected to the pressure rod 6 by bolts, and the pressure rod 6 can be fixed on the shank body through the clearance fit and the pressure spring 2. 1. The guide cavity provided in 1 slides up and down. The spacer block 5 is fixed on both ends of the leveling block 4 by bolt connection. When in use, it is in contact with the plane of the workpiece, and the two ends squeeze the plane of the workpiece to make it level; the reverse force of the workpiece is transmitted to the compression spring 2 through the pressure rod 6 to avoid The device is in rigid contact with the workpiece. The guide pin 3 is used to support the upward and downward sliding of the pressure rod 6 in the guide cavity provided in the handle body 1, and to limit the upper and lower positions.

The horizontal alignment device is similar to the tool, and the taper shank used in the shank body 1 is exactly the same as the tool, and the taper shank of the shank body 1 is the installation position of the horizontal alignment device. Therefore, the leveling device can be transferred out and in from the tool magazine by the automatic tool change of the equipment. When it is installed in the main shaft, the two spacers 5 on the leveling block 4 are in a state of horizontal and equal height.

Taking a car 3B rear axle housing as an example, the diameter of the cavity of the rear axle housing is Φ227MM (for assembly of the main reducer assembly), its plane has 10-M10X1.25 threaded holes, and the diameter of the distribution circle of the threaded holes is Φ250. The total length of the bridge body is 1237MM; Φ8.7 drill is used for drilling, M10X1.25 tap is used for tapping, and the chamfering adopts a replaceable non-standard chamfering knife. The equipment is a vertical machining center manufactured by Hangzhou Youjia Precision Machinery Co., Ltd., the model is VFP-40A.

Shank body 1 adopts BT40 taper shank structure, the length of the shank is 90MM, the front end has a Φ22H7 hole, and the depth is 75MM;

The total length of the pressure rod 6 is 108MM, the size of the square groove is 12MM wide (+0.021, 0), and the height is 25MM (+0.033, 0). Hole diameter Φ10 (+0.04, +0.02), length 16MM;

Horizontal leveling block 4 is 280MM in length, 12MM in width (-0.006, -0.02), and 25MM in height (-0.006, -0.02).

The device is used on CNC equipment such as vertical machining centers. Similar tools are installed on the tool magazine. After being called out, it participates in the leveling of the workpiece, and then returns to the tool magazine after completion, so that the leveling and processing of the workpiece are automatically controlled by the equipment. automatic running.

The axle housing is a steel plate formed part, the two halves are butt-welded into a tubular shape, the middle is enlarged to form an annular plane, and the two ends have turned outer circles as the process reference outer circle. When drilling the threaded holes on the annular plane, V is used. The shape block supports and clamps the outer circle of the process reference at both ends. Except for the contact area of the V-shaped block at both ends, the workpiece is all suspended. Because the machine tool spindle can only move vertically up and down, it is necessary to ensure that the annular plane is horizontal, otherwise, the machined threaded hole is not perpendicular to the plane and cannot be used.

This method adopts the leveling device installed in the tool magazine of the machine tool, which is installed into the spindle after automatic tool change. turn.

The machining action process of this process is as follows:

(1) The workpiece is supported by V-shaped blocks and clamped by the outer circle of the process reference at both ends. Except for the contact area of the V-shaped blocks at both ends, all of them are suspended;

(2) The horizontal alignment device is called for tool change. The horizontal alignment device is called out and imported from the tool magazine by the vertical machining center. When it is loaded into the spindle, the two spacers 5 on the horizontal leveling block 4 are horizontal, etc. high state;

When the leveling device is on the machine tool spindle and the machine tool spindle moves downward after positioning, one end block 5 of the leveling block 4 first contacts the high side of the workpiece, and when the machine moves downward, the workpiece is forced to wrap around the center of the V-shaped blocks at both ends. After the axis rotates to the spacers 5 at both ends and presses the workpiece at the same time, the spindle continues to descend; because the annular plane of the workpiece has a certain tolerance range relative to the height of the centerline of the reference at both ends, a certain margin should be reserved for the downward distance of the horizontal alignment device to cover the workpiece. The size deviation of the workpiece is guaranteed to ensure the reliability of the workpiece;

When the spindle continues to descend, the workpiece is under the downward pressure of the leveling device; and the leveling block 4 is reversely squeezed by the workpiece upward, thereby forcing the guide body of the pressing rod 6 to be guided by the guide pin 3 along the guide of the handle body 1 When the inner cavity moves up, the compression rod 6 squeezes the compression spring 2 when the compression rod 6 moves up, and the other end of the compression spring 2 transmits the force to the handle body 1 and then to the machine tool spindle;

Therefore, the force between the machine tool spindle and the workpiece is borne by the spring within a certain stroke range during the horizontal alignment of the device, which is not a mechanical rigid extrusion, which effectively avoids damage to the spindle accuracy.

After horizontal alignment, both ends of the workpiece are hydraulically clamped and supported; the horizontal alignment device returns to the tool magazine;

(3) Call Renishaw to measure the tool when changing the tool, detect the height coordinates of the workpiece ring plane and the center coordinates of the ring plane, and return the tool to the tool magazine after completion.

(4), then change the tool and call the 8.7 drill to drill holes and chamfers on the plane, and return the tool to the tool magazine after completion;

(5), then change the tool and call the M10X1.25 tap to process the thread, and return the tool to the tool magazine after completion;

(6) The hydraulic clamp is released, the protective door is unlocked, and it ends automatically.

In this embodiment, the tool magazine sheet metal of the vertical machining center has been restructured to increase the space for the tool change in and out position of the tool magazine, so that the tool change that only allows tool change with a diameter of 150mm is increased to allow tool change of a tool with a diameter of 280mm.

After the machining center of this embodiment is transferred into the leveling device, it moves to the workpiece leveling position, and the Z axis of the main shaft goes down, so that after the leveling device presses the workpiece plane in place, the workpiece is subjected to the pressure reaction force applied to the pressure of the leveling device. Spring 2, so as to keep the plane of the workpiece horizontal and avoid the indirect rigid extrusion of the workpiece and the spindle of the machine tool to operate the machine tool.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (4)

1. A horizontal alignment device of a vertical machining center is characterized by comprising a handle body (1), a pressure spring (2), a guide pin (3), a horizontal leveling block (4), a cushion block (5) and a pressure rod (6), wherein the upper part of the handle body (1) is a taper shank, the shape of the taper shank is consistent with that of a cutter handle, a guide inner cavity is arranged in the handle body (1), a guide pin hole is formed in the guide inner cavity in the vertical direction, a guide inner hole is formed in the upper end of the pressure rod (6), and a horizontal installation inner hole is formed in the lower end of the pressure rod (6);

guide pin (3) pass the direction hole of depression bar (6) and the direction pinhole connection of handle body (1), be equipped with pressure spring (2) between the direction inner chamber upper end of depression bar (6) head and handle body (1), depression bar (6) body of rod and direction inner chamber clearance fit sliding connection and guide pin (3) and spacing from top to bottom between the direction hole of depression bar (6), the central line of handle body (1) and the coincidence of the central line of depression bar (6), depression bar (6) are connected with horizontal leveling piece (4) through the horizontal installation hole, horizontal leveling piece (4) bottom both ends are equipped with cushion (5) respectively, two cushion (5) are same high state of level.

2. The horizontal aligning device of the vertical machining center according to claim 1, wherein the main body of the guide inner cavity of the handle body (1) is a cylindrical inner cavity, the cylindrical inner cavity is provided with a guide pin hole, and the axis of the cylindrical inner cavity is perpendicular to the axis of the guide pin hole.

3. The vertical machining center horizontal alignment device as claimed in claim 1 or 2, wherein the upper end of the pressure lever (6) is a guide body, the lower end of the pressure lever is a horizontal connector, the guide body is provided with a guide inner hole, the axis of the guide body is perpendicular to the center line of the guide inner hole, and the horizontal connector is provided with a horizontal installation inner hole.

4. The vertical machining center horizontal alignment device as claimed in claim 3, wherein the mounting end of the horizontal leveling block (4) is positioned through a horizontal mounting inner hole of the pressure rod (6) and fixed by a bolt.

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