CN210997694U - Tool holder locking device of vertical turning and milling machining center - Google Patents
Tool holder locking device of vertical turning and milling machining center Download PDFInfo
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- CN210997694U CN210997694U CN201920990989.3U CN201920990989U CN210997694U CN 210997694 U CN210997694 U CN 210997694U CN 201920990989 U CN201920990989 U CN 201920990989U CN 210997694 U CN210997694 U CN 210997694U
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Abstract
The utility model discloses a vertical turnning and milling machining center cutter holder locking device, including cutter holder, tool changing hydro-cylinder, mount pad, clamping cylinder and 4 location voussoirs, tool changing hydro-cylinder piston rod end and cutter holder one side upper portion are connected, and the guide rail of cutter holder both sides supports respectively at the guide rail inslot that mount pad central authorities lower part corresponds, and the mount pad top is fixed under the slipway bottom. A flange edge radially extends from a cylinder bottom plate of the clamping oil cylinder, and the flange edge is fixed in the center of the upper part of the mounting seat, so that a piston rod of the clamping oil cylinder is vertically arranged in the center of the mounting seat downwards. The four positioning wedge blocks are spliced into a cross shape and fixed on the lower end surface of the piston rod of the clamping oil cylinder. The utility model discloses can lock the cutter holder more effectively, can prevent effectively that the cutter from taking place the displacement in the course of working, improve the locking rigidity and the precision of cutter holder, thereby improved the utility model discloses a reliability.
Description
Technical Field
The invention relates to a turn-milling machining center, in particular to an automatic cutter conveying device used for the turn-milling machining center, and belongs to the technical field of metal cutting composite machining centers.
Background
The vertical turning and milling machining center has the advantages of shortening a production process chain, reducing benchmark conversion, improving machining precision, shortening a product research and development period and the like, and is widely applied to various large enterprises in the mechanical manufacturing industry. The vertical turning and milling machining center of a certain model adopts a rotating disc type tool magazine and a dovetail groove type tool holder, the tool holder is sent to the mounting position of the lower portion of the ram through a hydraulic oil cylinder for stopping and positioning, and the dovetail part of the tool holder is tightly pushed downwards through piston rods of the two hydraulic oil cylinders below the ram so as to lock the tool holder through friction force. In actual use, the structure has the defects that the cutter holder is not accurately positioned when being fed and the cutter is easy to withdraw when the cutting force is too large, so that the cutter changing accuracy cannot be ensured in the automatic machining process. In order to overcome the defects, manufacturers of the existing vertical turn-milling machining center also adjust the structure, and mostly adopt a BT50 type taper shank positioning structure, but for a ram with a clamping oil cylinder structure of the existing vertical turn-milling machining center, when the BT50 type taper shank positioning structure is replaced, a rotating disc type tool magazine and a spindle ram need to be replaced at the same time, so that the change amount is large, and the cost is high.
Disclosure of Invention
The invention aims to provide a tool holder locking device of a vertical turning and milling machining center, which is combined with the existing rotating disc type tool magazine structure and a main shaft structure to improve the locking rigidity and precision of a tool holder.
The invention is realized by the following technical scheme:
a cutter holder locking device of a vertical turning and milling machining center comprises a cutter holder, a cutter changing oil cylinder, a mounting seat, a clamping oil cylinder and 4 positioning wedge blocks, wherein the cutter changing oil cylinder is horizontally arranged in one end of a machine body; a flange edge radially extends from a cylinder bottom plate of the clamping oil cylinder, and the flange edge is fixed in the center of the upper part of the mounting seat, so that a piston rod of the clamping oil cylinder is vertically arranged in the center of the mounting seat downwards; the four positioning wedge blocks are spliced into a cross shape and fixed on the lower end surface of the piston rod of the clamping oil cylinder.
The object of the invention can also be achieved in one step by the following technical measures.
Furthermore, one end of each positioning wedge block is in a right-angle V shape, the right-angle V shapes of one ends of the four positioning wedge blocks are abutted against and spliced with each other to form a cross key, a piston rod cross groove matched with the cross key is formed in the lower end face of the piston rod of the clamping oil cylinder, and the upper portions of the four positioning wedge blocks are embedded and fixed in the piston rod cross groove.
Furthermore, the cross section of the positioning wedge block is in a flat-bottom V shape, 30-degree chamfers are symmetrically arranged at the lower parts of two longitudinal sides of the flat-bottom V shape, and the 30-degree chamfers face the top end of the tool holder.
Further, a flat-bottom V-shaped cross groove matched with the flat-bottom V-shaped at the lower side of the cross key is formed in the top end of the tool holder; when the tool holder is locked, the piston rod of the clamping oil cylinder descends, and the four positioning wedge blocks descend and are embedded into the flat-bottom V-shaped cross groove to lock the tool holder.
Furthermore, the positioning wedge block is made of medium carbon steel, and the heat treatment hardness of the medium carbon steel is HB 220-260.
The tool holder is compact in structure, the flange edge of the clamping oil cylinder is fixed in the center of the upper part of the mounting seat, and the four positioning wedge blocks spliced into the cross shape are fixed in the cross groove on the lower end face of the piston rod of the clamping oil cylinder, so that the tool holder can be corrected and positioned from two mutually perpendicular directions, and the positioning accuracy of the tool holder is improved. Compared with the structure of the existing double-oil-cylinder locking tool holder, the single-oil-cylinder locking tool holder is easier to machine and more convenient for pipeline arrangement. The cross positioning wedge block is pressed into the flat-bottom V-shaped groove at the top of the tool holder, the locking force in the cutting direction is provided by the normal force generated by the contact of two side surfaces of the positioning wedge block and two side surfaces of the flat-bottom V-shaped groove when the piston rod of the clamping oil cylinder moves downwards, the normal force is far greater than the simple plane friction force generated by the downward movement of the piston rod of the existing clamping oil cylinder to press the top surface of the tool holder, the tool holder can be locked more effectively, the displacement of a tool in the machining process can be effectively prevented, the locking rigidity and the locking precision of the tool holder are improved.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged left side view of FIG. 1;
FIG. 3 is a cross-shaped view of four positioning wedges spliced together;
FIG. 4 is an enlarged sectional view A-A of FIG. 3;
fig. 5 is an enlarged sectional view B-B of fig. 1.
Detailed Description
The invention will be further explained with reference to the drawings and an embodiment of the SVT160 type vertical turn-milling machining center.
As shown in fig. 1 and fig. 2, the present embodiment includes a tool holder 1, a tool changing cylinder 2, a mounting base 3, a clamping cylinder 4 and 4 positioning wedges 5, the tool changing cylinder 2 is horizontally disposed in the right end of a machine body 10, the end of a piston rod 21 of the tool changing cylinder is connected with the upper portion of the right side of the tool holder 1, the bottom of the tool holder 1 is supported on a supporting bottom plate 101, reliable guarantee is provided for moving guide rails 11 on two sides of the tool holder 1 into guide rail grooves 31 corresponding to the lower portion of the center of the mounting base 3, and the guide rails 11 and the guide rail grooves 31 of the present embodiment both adopt dovetail-type guide rails and dovetail-. In the process of extending the piston rod 21 of the tool changing cylinder to the left, the bottom of the tool holder 1 moves downward and rightward to be close to the lower part of the mounting seat 3 under the support guide of the support bottom plate 101 outside the right side of the mounting seat 3, and then the guide rails 11 on the two sides of the tool holder 1 move into the guide rail grooves 31 corresponding to the lower part of the center of the mounting seat 3 until the tool holder 1 is positioned by the stop positioning plate 32 on the left side of the mounting seat 3. The structure ensures that the movement and the positioning of the tool holder 1 are accurate and reliable, and is convenient for realizing the automatic tool changing function.
The top of the mounting base 3 is fixed below the bottom of the ram 20 through 6 lower fastening screws 32, a flange edge 411 extends radially from a cylinder bottom plate 41 of the clamping cylinder 4, and the flange edge 411 is fixed at the center of the upper part of the mounting base 3 through 8 upper fastening screws 42, so that a clamping cylinder piston rod 43 is vertically arranged at the center of the mounting base 3 downwards.
As shown in fig. 3 and 4, one end of the positioning wedge 5 is a right-angled V-shape, the right-angled V-shapes at one ends of the four positioning wedges 5 are abutted against each other to splice into a cross key 50, a piston rod cross groove 421 matched with the cross key 50 is arranged on the lower end face of the piston rod 42 of the clamping cylinder, the four positioning wedges 5 are embedded and fixed in the piston rod cross groove 421 on the lower end face of the piston rod 42 of the clamping cylinder, the tool holder 1 can be corrected and positioned from two mutually perpendicular directions, and the positioning accuracy of the tool holder 1 is improved. The cross section of the positioning wedge block 5 is in a flat-bottom V shape, the lower parts of the two longitudinal sides of the flat-bottom V shape are symmetrically provided with 30-degree chamfers, the 30-degree chamfers face the top end of the tool holder 1, the positioning wedge block 5 can be guided into the flat-bottom V-shaped cross groove 12 of the tool holder 1, the normal force generated by the contact of the two sides of the positioning wedge block 5 and the inclined surfaces corresponding to the flat-bottom V-shaped cross groove 12 is far greater than the vertical force, and the tool holder 1 can be locked. The positioning wedge block 5 is made of medium carbon steel, the heat treatment hardness of the positioning wedge block is HB 220-260, frequent contact between the positioning wedge block 5 and the flat-bottom V-shaped cross groove 12 can be adapted, the service life of the positioning wedge block 5 is prolonged, and the tool holder 1 is ensured to be accurately locked.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (3)
1. A cutter holder locking device of a vertical turning and milling machining center comprises a cutter holder, a cutter changing oil cylinder and a mounting seat, wherein the cutter changing oil cylinder is horizontally arranged in one end of a machine body, the end head of a piston rod of the cutter changing oil cylinder is connected with the upper part of one side of the cutter holder, the bottom of the cutter holder is supported on a supporting bottom plate, guide rails on two sides of the cutter holder are respectively supported in corresponding guide rail grooves in the lower part of the center of the mounting seat, and the top of the mounting seat is fixed below the; the clamping device is characterized by further comprising a clamping oil cylinder and 4 positioning wedge blocks, wherein a flange edge radially extends out of a cylinder bottom plate of the clamping oil cylinder, and the flange edge is fixed in the center of the upper part of the mounting seat, so that a piston rod of the clamping oil cylinder is vertically arranged in the center of the mounting seat downwards; the four positioning wedge blocks are spliced into a cross shape and fixed on the lower end surface of the piston rod of the clamping oil cylinder; one end of each positioning wedge block is in a right-angle V shape, the right-angle V shapes at one ends of the four positioning wedge blocks are abutted and spliced with each other to form a cross key, a piston rod cross groove matched with the cross key is formed in the lower end face of a piston rod of the clamping oil cylinder, and the upper parts of the four positioning wedge blocks are embedded and fixed in the piston rod cross groove; the cross section of the positioning wedge block is in a flat-bottom V shape, 30-degree chamfers are symmetrically arranged at the lower parts of the two longitudinal sides of the flat-bottom V shape, and the 30-degree chamfers face the top end of the tool holder.
2. The vertical turning and milling center toolholder locking arrangement of claim 1, wherein: the top end of the tool holder is provided with a flat-bottom V-shaped cross groove matched with the flat bottom V at the lower side of the cross key; when the tool holder is locked, the piston rod of the clamping oil cylinder descends, and the four positioning wedge blocks descend and are embedded into the flat-bottom V-shaped cross groove to lock the tool holder.
3. The vertical turning and milling center toolholder locking arrangement of claim 1, wherein: the positioning wedge block is made of medium carbon steel, and the heat treatment hardness of the medium carbon steel is HB 220-260.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990989.3U CN210997694U (en) | 2019-06-28 | 2019-06-28 | Tool holder locking device of vertical turning and milling machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990989.3U CN210997694U (en) | 2019-06-28 | 2019-06-28 | Tool holder locking device of vertical turning and milling machining center |
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| Publication Number | Publication Date |
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| CN210997694U true CN210997694U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920990989.3U Active CN210997694U (en) | 2019-06-28 | 2019-06-28 | Tool holder locking device of vertical turning and milling machining center |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193742A (en) * | 2019-06-28 | 2019-09-03 | 中船动力有限公司 | Vertical turn-milling cutting center cutter presss from both sides locking device |
-
2019
- 2019-06-28 CN CN201920990989.3U patent/CN210997694U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193742A (en) * | 2019-06-28 | 2019-09-03 | 中船动力有限公司 | Vertical turn-milling cutting center cutter presss from both sides locking device |
| CN110193742B (en) * | 2019-06-28 | 2024-05-28 | 中船动力有限公司 | Tool holder locking device of vertical turning and milling machining center |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province, 212002 Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |
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| CP03 | Change of name, title or address |