CN200939506Y - The cutter head device of computer numerical control lathe - Google Patents

Abstract

A tool disc device for a computer numerically controlled lathe comprises a tool disc body, the end surface of the tool disc body is provided with a plurality of mounting holes arranged in a ring shape for mounting a predetermined type of tool set, and is characterized in that: at least one mounting surface is flattened and provided at the position corresponding to the mounting hole on the outer circumference of the tool disc body, and the mounting surface can be provided with a non-powered tool set, and the non-powered tool set comprises a tool seat and a tool that is locked and fixed on the tool seat and does not generate power. The tool uses the tool seat as a stress support point, and can shorten the suspension distance to reduce the torque generated by the tool when cutting, thereby achieving multiple work requirements such as strengthening rigidity, back-to-back processing, application of heavy cutting and improved processing accuracy.

Description

The cutter head device of computer numerical control lathe

technical field

The utility model relates to a computer numerical control (CNC) lathe, in particular to a cutterhead device of a computer numerical control lathe with the advantages of enhanced rigidity, back machining, applicable to heavy cutting, and improved machining accuracy.

Background technique

At present, lathe technology has developed many new processing types from the early horizontal lathe, among which the turning-milling concept compound machine is a masterpiece of machine tools with the best technology combination. Its biggest advantage is that it can easily do complex processing on the same machine. The processing of parts, such as turning, drilling, tapping, end face grooving, side grooving, side milling, curve milling...etc., can complete all the processing processes of a part with one machine tool, greatly reducing the up and down The processing time of the material change machine and the opportunity to reduce human tolerances, usually this kind of turn-milling compound machine must be equipped with a power turret to have the function of turning-milling compound. At present, most of the industry follows the so-called German fast in the design and development of turrets. The VDI Toolholder System specification, because VDI turrets occupy a considerable market share, in order to achieve the convenience of common sharing of industrial parts, most post-manufacturers or machine tool factories will follow this in the design of turrets A VDI specification for development and design.

Referring to Fig. 1 and shown in Fig. 2, the general VDI cutterhead device 10 mainly has a circular cutterhead body 11, and the center of the cutterhead body 11 is provided with a rotating shaft 111 that can be used for indexing and driving. The end surface of the main body 11 is concavely provided with a plurality of mounting holes 112 arranged in a circular arrangement, and the outer peripheral surface of the cutter head body 11 corresponding to each mounting hole 112 is obliquely concavely provided with a sliding hole 113 that penetrates directly into the mounting holes 112 , and a screw hole 114 that is further recessed at the bottom of the sliding hole 113, a cutter set 12 can be installed in each mounting hole 112, and a fixing tool that can fix the cutter set 12 as a lock is installed in the opposite sliding hole 113. Assembly 13, the fixing assembly 13 includes a fixing block 131 slidingly arranged in the sliding hole 113, and a locking screw 132 that penetrates into the fixing block 131 and is screwed into the screw hole 114, and the fixing block 131 corresponds to the mounting hole One side of 112 is provided with a cog portion 1311, and the locking screw 132 can be screwed to tighten or loosen the fixed block 131. The tool set 12 is fixed on the cutter head body 11, and can be used to tighten and loosen the fixed block 131 inside the lathe. The workpiece 100 clamped by the spindle head 1 is cut. The tool set 12 mainly includes an insertion shaft 121 that can be inserted into the installation hole 112, a tool seat 122 connected to the outer end of the insertion shaft 121, and a The tool 123 fixed on the outside of the tool seat 122 has a toothed part 1211 on the side of the outer periphery of the plug-in shaft 121 corresponding to the slide hole 113. When the fixed block 131 is in a relaxed state, the plug-in shaft 121 is inserted and installed The fixed block 131 can be pushed and inserted to the bottom in the hole 112, and then the locking screw 132 is screwed to lock the fixed block 131, so that the cog portion 1311 of the fixed block 131 and the toothed portion of the plug shaft 121 1211 are locked and engaged with each other, so that the cutter set 12 can be quickly installed on the cutter head body 11 .

Generally, the tool set 12 installed in the VDI cutter head device 10 can be divided into power type and non-power type. The power type tool can run at high speed because of its own power. The new type is not aimed at improving the power tool, so I will not introduce the power tool in more detail here. The general VDI cutter head device 10 is equipped with a non-power tool group 12, which is mainly used for cutting the end surface and inner and outer diameters of the workpiece 100. According to the different cutting conditions, the user can choose a suitable type of tool to be installed on the tool set 12. Referring again to Fig. 2, the tool set 12 is equipped with a tool 123 of the face turning tool type, so that the VDI cutter head When the device 10 is fed and moved in the radial direction, the tool 123 can cut the end face of the workpiece 100, as shown in FIG. When moving along the axial feed, the tool 124 can cut the outer diameter of the workpiece 100, as shown in FIG. When the axial feed moves, the tool 125 can cut the inner diameter of the workpiece 100 .

The tool set 12 mentioned above can indeed choose to install predetermined types of tools for various cutting actions according to various processing requirements, but its structure will produce a defect that is not conducive to cutting. The tool set 12 is inserted through the insertion shaft 121 The mounting hole 112 is fixed on the cutter head body 11. The plug shaft 121 is loosely fitted with the mounting hole 112 for the convenience of insertion, and there will be a small gap between the two, resulting in poor machining accuracy of the cutter set 12. , and the fixing block 131 is fastened only by a single locking screw 132, because the locking screw 132 needs to cooperate with the sliding hole 113 to operate inside, its size cannot be enlarged, so that the fixing block 131 cannot be firmly Locking and fixing the cutter set 12 is not stable. In addition, the cutter set 12 uses the cutter holder 122 to install the cutters 123 (124, 125), and the cutting ends of the cutters 123 (124, 125) are all overhanging. The outside of the cutter head body 11 is used to avoid the interference between the cutter head body 11 and the workpiece 100 during cutting. However, the non-powered tool set 12 is fixed on the cutter head body 11 through the insertion shaft 121, and the cutters 123 (124, 125 ) will be absorbed by the insertion shaft 121 when cutting the workpiece 100. It can be seen from Fig. 2, Fig. 3 and Fig. The distances (D1) (D2) (D3) are all too long, causing the tool 123 (124, 125) to easily vibrate when cutting, seriously affecting the machining accuracy of the workpiece 100, and also reducing the tool 123 (124) , 125) are not suitable for heavy cutting, and the tool 123 (124, 125) is hindered by the cutter head body 11, and can only feed in the direction of the spindle head 1. For a lathe equipped with a pair of spindles 2 In other words, the cutter set 12 installed on the cutter head body 11 cannot perform back-facing processing, further limiting its processing performance.

Utility model content

The purpose of the utility model is to provide a cutter head device of a computer numerical control lathe with the advantages of enhanced rigidity, back-to-back machining, applicable to heavy cutting, and improved machining accuracy.

The utility model provides a cutter head device of a computer numerical control lathe. The lathe has a spindle head. The cutter head device includes a circular cutter body. The mounting hole for installing a predetermined tool set is characterized in that: the outer periphery of the cutter head body is at least flattened at the position corresponding to the mounting hole and provided with a mounting surface, and a non-powered tool set has a tool holder mounted on the mounting surface , and a tool that is locked on the tool seat and does not generate power. The tool is provided with a cutting end extending toward the spindle head. The cutting end uses the tool seat as a stress support point, which can shorten the suspension distance and reduce the cutting moment.

The effect of the utility model is to use the outer periphery of the cutter body to install the non-powered cutter group on the flat installation surface, so that the overhang length of the cutter can shorten the distance, thereby achieving enhanced rigidity, back-to-back processing, suitable for heavy cutting and lifting processing The effect of precision.

Description of drawings

Figure 1 is a plan view of a general VDI cutter body;

Figure 2 is a schematic diagram of the cutting of a general VDI cutter head device, illustrating the situation in which a tool is installed for radial cutting;

Figure 3 is a schematic diagram of the cutting of a general VDI cutter head device, illustrating the situation in which a cutter is installed for axial cutting;

Figure 4 is a schematic diagram of the cutting of a general VDI cutter head device, illustrating the situation where a cutter is installed for inner diameter cutting;

Fig. 5 is a plan view of the first preferred embodiment of the cutterhead device of the computer numerical control lathe of the present invention, illustrating that it includes a cutterhead body and a non-powered tool set, and the cutterhead body is provided with several horizontally mounted cutterheads on the outer periphery. Set the mounting surface of the non-powered tool set;

Fig. 6 is a combination diagram of the above-mentioned preferred embodiment, illustrating that the non-powered tool set has a tool capable of cutting the workpiece radially toward the spindle head;

Fig. 7 is a schematic diagram of cutting in the second preferred embodiment, illustrating the situation that the non-powered tool set can be used for back machining with a secondary spindle;

Fig. 8 is a cutting schematic diagram of the third preferred embodiment, illustrating that the non-powered tool is assembled with a tool that can be used for bidirectional cutting with two tools;

Fig. 9 is a cutting schematic view of the fourth preferred embodiment, illustrating that the non-powered tool assembly is equipped with a tool capable of boring the inner diameter of the workpiece.

Detailed ways

Regarding the aforementioned and other technical content, features and effects of the present invention, the cutter head device of the computer numerical control lathe of the present invention will be described in detail below through the best embodiment and accompanying drawings. The same or similar components are represented by the same symbols below.

Referring to Fig. 5 and Fig. 6, in the first preferred embodiment of the cutter head device of the computer numerical control lathe of the present invention, a spindle head 1 is arranged inside the computer numerical control (CNC) lathe, and the spindle head 1 can be used to clamp and fix A workpiece 2, the cutterhead device is a turret structure conforming to the VDI specification, which includes a circular cutterhead body 20, and the cutterhead body 20 is provided with a rotating shaft 21 that can be used for indexing rotation at the center. The end face is provided with a plurality of installation holes 22 arranged in a ring shape, and these installation holes 22 can be used to install a predetermined type of power tool set (not shown). Since the power tool set belongs to the prior art, it will not be described here. Going into details again, the main improvement points of the utility model are:

The outer periphery of the cutter head body 20 is flattened at the positions corresponding to the mounting holes 22 and is provided with a plurality of installation surfaces 23, and the installation surfaces 23 make the outer periphery of the cutter head body 20 have a positive polygonal shape, and are located in the middle of the installation surface 23. A positioning groove 231 is further recessed.

At least one non-powered tool set 30 has a tool seat 31, several fixing screws 32 for locking the tool seats 31 on the mounting surface 23, and a tool 33 locked on the tool seat 31 without generating power, And a positioning piece 34 embedded in the bottom of the tool holder 31 and just fit into the positioning groove 231, the tool holder 31 uses the positioning piece 34 to insert and align the position on the mounting surface 23, and then use several fixing screws 32 to pass through The lock is fixed on the cutterhead body 20, and the tool 33 is mainly a turning tool type. In this embodiment, the tool 33 is connected to the front side of the tool seat 31, and it extends toward the direction of the spindle head 1. The cutting end 331 can radially cut the workpiece 100 clamped by the spindle head 1, and the cutting end 331 uses the tool seat 31 as a stress-bearing fulcrum, and there is a suspended space between the cutting end 331 and the fixing screw 32. distance (S1).

The above is an overview of the shapes and combined space patterns of the cutter head device of the computer numerical control lathe of the present invention. Then, the various cutting actions of the present invention and the expected functions that can be achieved are stated as follows:

Referring to Fig. 7, in the second preferred embodiment of the present invention, in addition to the spindle head 1, the CNC lathe is further provided with a sub-spindle 2 at a position opposite to the spindle head 1, on which the sub-spindle 2 can be Another workpiece 200 is clamped and fixed. At this time, the tool 33 is detachably connected to the rear side of the tool seat 31, and there is still a shortened suspension distance between the cutting end 331 of the tool 33 and the fixing screw 32 (S2 ), and the tool 33 can perform back machining on another workpiece 200 in the direction of the sub-spindle 2 .

Referring to Fig. 8, in the third preferred embodiment of the present invention, the cutter head body 20 is provided with another non-powered tool set 40, and the other non-powered tool set 40 includes a tool seat 41 and two respectively The cutters 42 and 43 fixed at the front and rear ends of the tool holder 41, the cutter 42 at the front can cut the workpiece 100 in the axial direction toward the spindle head 1, and there is a suspended space between the cutting end 421 and the tool holder 41. Distance (S3), the tool 43 positioned at the back can cut another workpiece 200 axially towards the direction of the sub-spindle 2, and another suspension distance (S4) is maintained between its cutting end 431 and the tool seat 41, each suspension The distances ( S3 ) ( S4 ) are relatively short, so that the cutters 42 , 43 have strong cutting rigidity.

Referring to Fig. 9, in the fourth preferred embodiment of the present invention, the cutter body 20 is provided with another non-powered tool set 50, and the other non-powered tool set 50 includes a tool seat 51, a The tool 52 fixed at the front side of the tool seat 51 and several fixing screws 53 that lock and fix the tool seat 51 on the cutter head body 20, the tool 52 extends a cutting end 521 toward the spindle head 1, which can be used for If the workpiece 100 is bored in the inner hole, if it is to be processed in the opposite direction, it is only necessary to install the tool 52 in the opposite direction. A suspension distance (S5) is maintained between the cutting end 521 and the fixing screw 53, and the suspension distance (S5) is equal to Compared with the general VDI cutter head device 10, the suspended distance (D3) of the cutter 143 is greatly shortened, so that the utility model can achieve stable and precise cutting ability.

To sum up, the cutter head device of the computer numerical control lathe of the present invention is mainly to solve the problem of the usability of the general VDI cutter head body 10, and the technical means of the utility model is mainly to utilize the circular cutter head body 20 outer circumference flat Cutting is provided with a mounting surface 23, is used for installing and connecting the non-powered tool group 30, so this tool 33 is to use the tool seat 31 as the stress support point, can shorten the suspended distance of the cutting end 331 of the tool 33, and reduce the cutting force generated by the tool 33. Torque greatly enhances the rigidity of the cutting tool 33, so the utility model is applicable to heavy cutting processing occasions, and the tool seat 31 is locked and fixed by a plurality of large-sized fixing screws 32, and the fixing effect is quite dense and stable, so that the tool 33 can be Steady cutting without tool vibration helps to improve machining accuracy. In addition, the utility model can be used in combination with the sub-spindle 2 to carry out back machining, so that the utility model has more cutting capabilities for various processing types.

Claims (7)

1. A cutterhead device of a computer numerically controlled lathe, the lathe has a spindle head, the cutterhead device includes a circular cutterhead body, the cutterhead body is provided with a plurality of ring-shaped arrays at the end surface for loading A mounting hole for a predetermined tool set is provided, which is characterized in that: The outer periphery of the cutter head body is at least flattened and provided with a mounting surface at a position corresponding to the mounting hole; and A non-powered tool set, which has a tool seat installed on the mounting surface, and a tool that is locked on the tool seat and does not generate power. The tool extends toward the spindle head and has a tool seat as a stress support. The cutting end of the point. 2. The cutterhead device of a computer numerically controlled lathe as claimed in claim 1, wherein the cutter is connected to the front side of the cutter seat and can cut radially toward the spindle head. 3. The cutter head device of a computer numerically controlled lathe according to claim 1, wherein the cutter is connected to the front side of the cutter seat and can cut axially toward the spindle head. 4. The cutterhead device of a computer numerically controlled lathe as claimed in claim 1, wherein the cutter is connected to the front side of the cutter seat and can perform inner diameter cutting toward the spindle head. 5. The cutter head device of a computer numerically controlled lathe as claimed in claim 1, wherein the lathe has a sub-spindle relatively arranged in the opposite direction of the main shaft head, and the tool is connected to the rear side of the tool seat and can move toward the sub-spindle. The direction of the main axis is processed in the opposite direction. 6. The cutterhead device of a computer numerically controlled lathe as claimed in claim 1, wherein the non-powered tool set includes a plurality of fixing screws that lock and fix the tool seat on the mounting surface. 7. The cutter head device of a computer numerically controlled lathe as claimed in claim 1, wherein the cutter head body is further provided with a positioning groove in the middle of the installation surface, and the non-powered tool set further includes a tool embedded in the tool The bottom of the seat and just fit into the locating piece in the locating groove.

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