JP6113673B2 - Machine Tools - Google Patents

Description

  The present invention relates to a machine tool including a cover body that prevents scattering of coolant and cutting waste during workpiece machining.

  Machine tools represented by vertical lathes are provided with a cover body for preventing scattering so that coolant and cutting chips are scattered around during machining, so that they are not scattered outside the machine tool.

  This cover body has been proposed in various forms depending on the device configuration. For example, the cover body covers the entire machine tool as shown in Patent Document 1 or in the horizontal direction of the tool post as shown in Patent Document 2. There is a form that opens and closes in parallel with the direction of movement of the tool post, or a form that surrounds the periphery of the table along the outer periphery of a circular table on which a work is placed as shown in Patent Document 3.

JP 2012-045707 A JP 2011-016199 A JP 2006-068859 A

  However, the cover body that covers the entire machine tool as in Patent Document 1 is large in size and costly, and the tool post and the cross rail in the cover body are difficult to be completely waterproofed, so scattered coolant is applied. There was a problem that caused the failure.

  Further, the cover body that opens and closes in the left-right direction of the tool rest as in Patent Document 2 is parallel to the moving direction of the tool rest, and the opening direction becomes a direction away from the table. The accessibility to the table is poor, so the opening formed by the opening movement of the cover body also increases the distance from the table as it goes to the outside, making it difficult for the operator to reach the hand. There was a problem of becoming.

  Moreover, although the cover body of the shape along the outer periphery of the circular table like patent document 3 is excellent in the accessibility with respect to a table, when the ceiling was provided, it comprised so that this ceiling could be opened and closed by a mobile type In this case, there is a problem that the retreat movement position becomes on the table and interferes with the tool post, and when it is configured to be removable, it is dangerous to attach and detach the large and heavy ceiling, In addition, the ceiling is not covered due to poor workability, etc., so it is not possible to completely prevent splashing of coolant and cuttings, and the problem is that coolant and cutting waste are scattered outside. was there.

  In view of such a current situation, the present invention has excellent accessibility to a circular table, excellent workability with respect to the table, and is necessary for preventing external scattering of coolant and cutting waste without covering the entire machine tool. It is aimed to provide a revolutionary machine tool that can reduce the cost by preventing external splashing of coolant and cutting waste by providing a small fully-closed cover body that covers a small range .

  The gist of the present invention will be described with reference to the accompanying drawings.

  In a machine tool that covers a circular table 1 on which a workpiece W is placed and includes a cover body 2 that prevents splashing of coolant and cutting waste during workpiece machining, the cover body 2 surrounds the side of the table 1. The cover body 2 is configured as a fully-closed cover body 2 including a peripheral surface portion 3 and a top surface portion 4 that covers the upper surface. It is located on the back side and has a configuration in which the radius of curvature Rc is formed on a curved peripheral surface in a circular arc shape in plan view larger than the radius Rt of the table 1, and the left or right side of the table 1 is The movable peripheral surface portion 6 is opened in the opening direction as a configuration including a fixed peripheral surface portion 5 that surrounds and a movable peripheral surface portion 6 that surrounds the front side of the table 1 and is slidably movable with respect to the fixed peripheral surface portion 5. Slide to move to The peripheral surface portion 6 is configured to be superposed on the fixed peripheral surface portion 5 so that the front side of the cover body 2 is in an open state, and the top surface portion 4 is combined with a tool post 7 protruding upward from the top surface portion 4. A moving turret following moving top surface portion 8 and a front top surface portion 10 provided adjacent to the front side of the turret following moving top surface portion 8 are detachable or undulated. The turret moving range top surface opening 9 for moving the turret 7 covered by the turret following moving top surface portion 8 is configured to be freely openable and closable. A top surface portion 10 is provided so as to be retractable along the peripheral surface portion 3, and a front side top surface opening portion 12 covered with the front top surface portion 10 is configured to be openable and closable, and the tool rest moving range top surface opening portion 9 and The front side top surface opening 12 is connected to the peripheral surface portion 3. Those of the machine tool, characterized in that a provided in communication with the front side peripheral surface opening 11 that opens when moving to open the moving peripheral surface 6 configuration.

  Further, the tool post following moving top surface portion 8 is formed in a strip shape, provided in a projecting state on both sides in the moving direction of the tool post 7 and configured to move together with the tool post 7. 2. The machine tool according to claim 1, wherein the turret movement range top surface opening portion 9 is maintained in a closed state in a state in which the pedestal 7 moves during machining of the workpiece W. Is.

  The turret following moving top surface portion 8 is composed of a fixed portion 13 provided in a fixed state on the turret 7 and an opening / closing portion 14 provided so as to be able to be swung up and down and provided to be opened and closed. The machine tool according to any one of claims 1 and 2, wherein the tool post moving range top surface opening 9 is in an open state when the tool 14 is turned upright. is there.

  Further, when the movable peripheral surface portion 6, the front top surface portion 10, and the tool post following movable top surface portion 8 are opened, the front peripheral surface opening portion 11, the front top surface opening portion 12, and the cutter are respectively opened. The machine tool according to any one of claims 1 to 3, wherein the table moving range top surface opening 9 is configured to open in a communicating state.

  Further, as the configuration in which the moving peripheral surface portion 6 and the front top surface portion 10 are continuously provided and the front top surface portion 10 is opened and closed together with the moving peripheral surface portion 6, the moving peripheral surface portion 6 is moved in the opening direction. The front top surface portion 10 is also opened and moved so that, on the front side of the cover body 2, the front side peripheral surface opening portion 11 and the front side top surface opening portion 12 are simultaneously opened in communication. It concerns on the machine tool of any one of Claims 1-4 characterized by these.

  The top surface portion 4 includes the turret following moving top surface portion 8, the front top surface portion 10, and a fixed top surface portion 15 that covers either the left or right side of the table 1. When the front top surface portion 10 is slidably moved in the opening direction with respect to the fixed top surface portion 15, the front top surface portion 10 is superposed on the fixed top surface portion 15 to form the front top surface. The machine tool according to any one of claims 1 to 5, wherein the opening 12 is configured to be in an open state.

  Further, an inner cover portion 16 is provided on the inner side of the fixed peripheral surface portion 5 to prevent the scattering of coolant and cutting chips during workpiece processing. The inner cover portion 16 is provided on a concentric circle at the center of the table 1. The machine tool according to any one of claims 1 to 6, wherein the machine tool is characterized.

  Further, a gap filling member 17 for filling a gap formed between the tool post following moving top surface portion 8 and the front top surface portion 10 on the lower surface of the tool post following moving top surface portion 8 or the upper surface of the front top surface portion 10. The machine tool according to any one of claims 1 to 7, characterized in that it is configured to prevent splashing of coolant and cutting waste during workpiece machining from the gap.

  Since the present invention is configured as described above, it has excellent accessibility to a circular table, excellent workability with respect to the table, and is necessary for preventing external scattering of coolant and cutting waste without covering the entire machine tool. By providing a small, fully-closed cover body that covers a minimum range, it is possible to prevent the coolant and the cutting waste from being scattered outside, and to realize an epoch-making machine tool that can realize cost reduction.

  That is, according to the present invention, the front side circumferential surface opening formed by the opening movement of the moving circumferential surface portion has good accessibility to the table, and thereby, the workpiece from the front side circumferential surface opening can be moved. Work around the table such as installation / recovery work becomes extremely easy and workability is improved.

  In addition, the present invention is a small cover body that covers the minimum range necessary to prevent the coolant and cutting dust from being scattered outside without covering the entire machine tool, while the cover body is a fully closed type. , The spray range of coolant and cutting waste is narrowed, and the spray of coolant to the tool post and cross rail is eliminated.Therefore, the failure due to the adhesion of this coolant is reduced as much as possible. This is a revolutionary machine tool that is excellent in practicality, which can realize low cost and is excellent in economic efficiency, and the machine tool itself is downsized and the degree of freedom of installation is improved.

  In the invention according to claim 2, the machine tool is excellent in practicality and can be easily realized with a very simple configuration to maintain the fully closed state of the top surface by moving the tool post.

  Further, in the invention described in claim 3, the turret following moving top surface opening / closing structure has a simple structure, and the tool table moving range top surface opening can be opened and closed extremely easily. It becomes a machine.

  In the invention according to claim 4, a wide opening can be formed on the front side of the cover body. For example, a large work can be installed and recovered on the table in a suspended state. A machine tool with excellent workability.

  In the invention according to claim 5, the operability is further improved, and the machine tool is more practical.

  According to a sixth aspect of the present invention, there is provided an epoch-making machine tool that makes it possible to easily design and realize a fully-closed cover body with a simple configuration and to easily reduce the size of the cover body. Become.

  Further, in the invention according to claim 7, a machine tool excellent in practicality capable of efficiently cleaning the inside of the cover and collecting the cutting waste by limiting the range in which the coolant and the cutting waste are scattered in the cover. It becomes.

  In the invention according to the eighth aspect, the machine tool is further excellent in the performance of preventing the coolant and cutting chips from scattering to the outside.

It is a description perspective view which shows the fully closed state of the cover body of a present Example. It is explanatory plane sectional drawing which shows the surrounding surface part and inner side cover part of a present Example. It is an explanatory top view which shows the top | upper surface part of a present Example. It is explanatory drawing which shows the use condition (a ram is an origin position) of a present Example. It is explanatory drawing which shows the use condition (ram | ram is a process range limit position) of a present Example. It is an explanatory top view which shows the use condition (a ram is a workpiece | work measurement position) of a present Example. It is a perspective view which shows the use condition (The state which the front side peripheral surface opening part and the front side top surface opening part opened) of a present Example. It is a perspective view which shows the use condition (State which the tool post movement range top surface opening part, front side peripheral surface opening part, and front side top surface opening part opened) of a present Example. It is explanatory drawing which shows the gap filling member of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The cover body 2 of the present invention is configured as a fully-closed cover that does not cover the entire machine tool and covers a small range of the moving space of the ram 18 provided below the circular table 1 and the tool post 7. The size of 2 itself is downsized, and it is possible to reduce the cost and the range of splashing coolant and cutting waste is narrowed, so there is no splashing on the tool post 7 or cross rail, and failure due to splashing of coolant is made as much as possible. In addition, the overall size of the machine tool can be reduced, and the degree of freedom of installation location is improved.

  Further, in the present invention, the movable peripheral surface portion 6 slides and opens and closes while maintaining good accessibility to the circular table 1, so that the peripheral surface portion of the cover body 2 when the movable peripheral surface portion 6 is moved in the opening direction. The front side peripheral surface opening 11 formed on the front side of FIG. 3 is an opening having good accessibility to the circular table 1, and not only near the center of the opening but also around the left and right sides of the table. Since the distance up to 1 becomes close and the operator can approach the table 1 and work, the hand can easily reach the table 1 and the work W can be easily set and collected.

  Further, in the present invention, the position of the center of curvature Oc of the peripheral surface portion 3 having a circular arc shape in plan view is shifted to the left or right side with respect to the center Ot of the circular table 1. A space is formed, and the front top surface portion 10 covering the front top surface opening 12 can be retracted and moved in this space, so that even when the front top surface portion 10 is in an open state, the cutter A configuration that does not interfere with the movement of the table 7 can be achieved, and, for example, workability (for example, workpiece measurement work) in a state where the front top surface portion 10 is opened is also possible.

  Furthermore, since the present invention is configured to move the tool post following moving top surface portion 8 together with the tool rest 7, even if the upper surface of the table 1 is covered with the top surface portion 4, the tool rest 7 does not interfere with the top surface portion 4. The tool post 7 can be moved and processed while the fully closed state is maintained. Therefore, it is possible to reliably prevent the coolant and cutting waste from being scattered outside the cover body 2 during the processing. Can do.

  Further, in the present invention, the turret following moving top surface portion 8 that moves together with the turret 7 is opened to open the turret moving range top surface opening 9, and the front top surface portion 10 adjacent to the turret following moving top surface portion 8 is opened. Is opened, and the front side top surface opening 12 is opened, and further, the moving peripheral surface portion 6 is opened and the front side peripheral surface opening 11 is opened, then the tool post moving range top surface opening 9 and front side top surface opening 12 are opened. And a front opening on the front side surface 11 are formed so that a large opening can be formed, and for example, a large work W can be placed on the table 1 in a suspended state and recovered.

  As described above, the present invention is excellent in workability around the table 1 such as installation / recovery work of the workpiece W by providing the small fully-closed cover body 2 excellent in accessibility to the circular table 1. At the same time, it is an innovative machine tool that has excellent anti-scattering performance for coolant and cutting waste, and has excellent practicality that can be provided at low cost.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a machine tool that includes a cover body 2 that covers a circular table 1 on which a workpiece W is placed, and prevents scattering of coolant and cutting waste during workpiece processing.

  Specifically, in this embodiment, the machine is provided with a small fully-closed cover body 2 that covers a small range of the moving space of the ram 18 provided on the table 1 and the tool rest 7 that moves above the table 1. It is a machine.

  That is, the cover body 2 of the present embodiment is not a large-sized cover body that covers the entire machine tool including the tool rest and the cross rail as in the prior art, but a working space below the tool rest 7 as shown in FIG. The tool post 7 and the cross rail are configured in a small cover body 2 configured to be located outside the cover body 2.

  In addition, the cover body 2 of the present embodiment has a configuration including a peripheral surface portion 3 that surrounds the side of the circular table 1 and a top surface portion 4 that covers the upper side of the table 1. 2, the curvature center Oc is located on the left side and the back side with respect to the center Ot of the table 1, and the curvature radius Rc is a circular arc shape in plan view having a larger diameter than the radius Rt of the table 1. The configuration is formed on a curved peripheral surface.

  More specifically, the peripheral surface portion 3 of the present embodiment surrounds the fixed peripheral surface portion 5 that surrounds the left side of the circular table 1 and the front side of the table 1, with respect to the fixed peripheral surface portion 5. The movable peripheral surface portion 6 is provided so as to be slidable.

  More specifically, the movable peripheral surface portion 6 of the present embodiment is provided at a position where the movable peripheral surface portion 6 is in a close proximity to the circular table 1 in the closed state, that is, the front surface side of the cover body 2. When the movable peripheral surface portion 6 is slid in the opening direction, the movable peripheral surface portion 6 is overlapped with the fixed peripheral surface portion 5 to open the front side of the cover body 2, and to the front side of the cover body 2. A front-side peripheral surface opening 11 is formed as a work port for the work W to be taken in and out and for a worker to perform a fixing work or the like on the work W placed on the table 1. .

  That is, the opening surface of the front peripheral surface opening portion 11 of the present embodiment is formed on the moving peripheral surface portion 6 formed on the curved peripheral surface having a circular arc shape in plan view provided at a position where the circular table 1 is in the best proximity state. Therefore, the front side peripheral surface opening 11 also has good accessibility to the circular table 1, and is separated from the table 1 on the left and right end portions of the front side peripheral surface opening 11. The front side peripheral surface opening 11 is configured such that the distance is small and the hand can easily reach the table 1 and work easily.

  Further, the peripheral surface portion 3 of the present embodiment has the curvature center Oc of the peripheral surface portion 3 with respect to the center Ot of the circular table 1 so that the position where the movable peripheral surface portion 6 is closed is closest to the table 1. Therefore, the fixed peripheral surface portion 5 is disposed at a position farther from the table 1 than the movable peripheral surface portion 6. Specifically, as shown in FIG. 2, the left side of the circular table 1 is arranged. A relatively large space is opened on the side.

  In the present embodiment, this space is used as a retreat space portion 19, and this retreat space portion 19 is set to a space where the front top surface portion 10 constituting the top surface portion 4 described later can be retreated without interfering with the ram 18. .

  Further, in this embodiment, since a wide space is formed between the table 1 and the fixed peripheral surface portion 5 as described above, that is, on the left side of the table 1, the cutting waste scatters and accumulates in this space. Since it becomes easy and the problem that the collection processing of cutting waste becomes difficult arises, in order to solve this, the inner cover portion 16 is provided inside the fixed peripheral surface portion 5.

  Specifically, as shown in FIG. 2, the inner cover portion 16 of the present embodiment has a predetermined distance from the table 1 (in this embodiment, substantially the same as the spacing distance from the movable peripheral surface portion 6 on the front side of the table 1). It is provided so as to surround the back side from the left side of the circular table 1 on a concentric circle of the center Ot of the table 1 with an interval.

  That is, in this embodiment, by providing the inner cover portion 16 on the inner side of the peripheral surface portion 3, the scattered cutting waste falls downward on the inner cover portion 16, and the cutting provided on the lower side of the inner cover portion 16. It is configured to be collected by the waste collection unit 20.

  Further, the top surface portion 4 of this embodiment is provided at the lower end position height of the tool post 7 moving on the table 1, and the ram provided below the table 1 and the tool post 7 moving on the table 1. It is configured to cover 18 movement spaces.

  The top surface portion 4 of the present embodiment is configured by three top surface portions. Specifically, as shown in FIG. 3, a tool for moving the tool rest 7 passing over the center Ot of the circular table 1. The turret following moving top surface portion 8 covering the platform movement range top surface opening portion 9 and the front ceiling covering the front side top surface opening portion 12 adjacent to the turret movement range top surface opening portion 9 and above the front side of the table 1. A surface portion 10 and a fixed top surface portion 15 that covers a top surface opening portion other than the tool post movement range top surface opening portion 9 and the front side top surface opening portion 12 are configured.

  Specifically describing each top surface portion, the tool post following moving top surface portion 8 is formed in a band plate shape, provided in a projecting state on both sides in the moving direction of the tool rest 7, and moved together with the tool rest 7. In addition, in the moving range in which the tool post 7 moves during processing of the workpiece W, the closed state of the tool post moving range top surface opening 9 is maintained.

  Specifically, during machining of the workpiece W, the ram 18 moves from the origin position shown in FIG. 4 to the machining range limit position shown in FIG. In the movement range from the position in the position to the state in which the ram 18 shown in FIG. 5 is in the machining range limit position, as shown in the drawing, the tool post following movement top surface portion 8 causes the tool rest movement range top surface opening 9. The closed state is maintained, and the cover body 2 is configured to maintain the fully closed state.

  The turret following moving top surface portion 8 of the present embodiment will be described in more detail. The turret following moving top surface portion 8 of the present embodiment is provided with a fixing portion 13 provided in a fixed state on the turret 7 and a undulating rotation. The opening / closing part 14 is provided so as to be freely opened and closed.

  The fixing portion 13 has a through hole through which the ram 18 is disposed, and the ram 18 is disposed in a through state in the through hole so as to be provided at the lower end of the tool post 7. 7 is configured so as to cover the tool post movement range top surface opening 9 formed on the right side (origin side) of FIG.

  Specifically, as shown in FIG. 5, the fixing portion 13 of the present embodiment slightly protrudes from the left side of the tool post 7, and the ram 18 is in the machining range limit position from the right side of the tool post 7. The tool rest moving range top surface opening 9 formed below the tool rest 7 and on the right side of the tool rest 7 is configured to be covered.

  That is, in a state where the ram 18 is at the machining range limit position from the origin, the turret moving range top surface opening 9 below the turret 7 and on the right side of the turret 7 is covered with the fixed portion 13.

  Further, the opening / closing part 14 is pivotally connected to a portion protruding from the left side of the tool post 7 of the fixed part 13 and is provided so as to be able to turn up and down, and the tool post moving range formed on the left side of the tool post 7 is provided. The top surface opening 9 is covered.

  In other words, in this embodiment, the turret moving range top surface opening 9 formed on the left side of the tool rest 7 is opened and closed by the up-and-down turning operation of the opening and closing section 14.

  The raising / lowering rotation operation of the opening / closing part 14 of this embodiment is configured to be performed by an expansion / contraction operation of a cylinder 21 (an air cylinder is adopted in this embodiment) provided on the upper side of the tool post 7.

  Specifically, the tip of the cylinder 21 is connected to the tip of the opening / closing part 14, and when the cylinder 21 is retracted, the tip of the opening / closing part 14 is lifted and pivoted up with the pivoting part 22 at the boundary with the fixed part 13 as a fulcrum. The tool post movement range top surface opening 9 is configured to open, and when the opening / closing part 14 is in an upright state and the tool post movement range top surface opening 9 is opened, the cylinder 21 extends and the opening / closing part 14 is lowered. The turret moving range top surface opening 9 is closed by tilting and turning.

  In addition, the opening / closing part 14 of the present embodiment is provided so as to be able to swing up and down, and as a structure provided to be extendable and retractable, when the tool post 7 (ram 18) is moved to a machining range limit position or a workpiece measurement position, The opening / closing part 14 of the tool post following moving top surface part 8 is configured not to protrude from the peripheral surface part 3.

  In other words, the turret following moving top surface portion 8 of the present embodiment makes the turret moving range top surface opening 9 closed even when the ram 18 is at the origin as shown in FIG. Is longer than the fixed portion 13. Therefore, when the tool post 7 moves to the processing range limit position of the ram 18, the opening / closing part 14 provided on the left side of the tool post 7 protrudes outward from the peripheral surface part 3 and protrudes from the peripheral surface part 3. There is a risk that an operator may be injured by hitting the opened / closed portion 14 (the tool post following moving top surface portion 8).

  The present embodiment prevents the tool post following moving top surface portion 8 from protruding from the peripheral surface portion 3, and the opening / closing portion 14 on the projecting side of the tool post following moving top surface portion 8 so that the operator can work safely. Are provided so that the tool post 7 moves to a position where the tool post following moving top surface portion 8 protrudes from the peripheral surface portion 3, and the opening / closing portion 14 is retracted or retracted after being retracted. Thus, it is configured not to protrude from the peripheral surface portion 3.

  Specifically, the opening / closing part 14 of this embodiment is composed of a continuous part 14A pivotally connected to the fixed part 13 and a slide part 14B provided slidably with respect to the continuous part 14A. The slide portion 14B is configured such that the continuous portion 14A serves as a slide guide and is provided on the continuous portion 14A so as to be freely slidable on the overlapping portion, and the opening / closing portion 14 is expanded and contracted by the sliding movement of the slide portion 14B.

  More specifically, the opening / closing portion 14 of the present embodiment is configured such that the slide portion 14B is slidably movable with respect to the continuous portion 14A by a linear motion guide, and when retracted, as shown in FIG. The turret 7 is moved while the tip of the opening / closing part 14, that is, the slide part 14 B is in contact with the stopper 23 provided at the tip of the movement guide part for guiding the movement of the turret 7. The opening / closing part 14 is configured to be retracted by being pressed by the stopper 23 and sliding relative to the connecting part 14A.

  Further, when the ram 18 moves further to the left side than the state of FIG. 5 and the ram 18 as shown in FIG. 6 moves to the workpiece measurement position, in this embodiment, the opening / closing part 14 is retracted and the cylinder 21 is raised. It is configured to move and retract upward to avoid protrusion.

  In this embodiment, the opening / closing portion 14 is extended by pushing the slide portion 14B to the distal end side by extending the cylinder 21. However, for example, the connecting portion 14A and the slide portion 14B An urging member such as a spring may be interposed between the sliding portions 14B, and the sliding portion 14B may be slid in the extending direction by the urging force of the urging member.

  Further, as shown in FIG. 3, the front top surface portion 10 of the present embodiment is configured to be adjacent to the above-described tool post following moving top surface portion 8 and to be slidable along the peripheral surface portion 3.

  Further, the front top surface portion 10 of the present embodiment is configured to be connected to the movable peripheral surface portion 6 and configured to slide open and close together with the movable peripheral surface portion 6.

  That is, in this embodiment, when the movable peripheral surface portion 6 is moved in the opening direction, the front top surface portion 10 is also moved open, and the movable peripheral surface portion 6 is opened on the front side of the cover body 2 as shown in FIG. The front-side peripheral surface opening 11 that opens by movement and the front-side top surface opening 12 that opens by opening movement of the front top surface portion 10 are configured to be opened in a communication state at the same time.

  Further, in this embodiment, the tool post following moving top surface portion 8 is moved to the origin position of the ram 18 in a state where the front side peripheral surface opening portion 11 and the front side top surface opening portion 12 are opened in communication. In this state, when the opening / closing part 14 is turned upright to bring the tool post movement range top surface opening 9 into the open state, as shown in FIG. 8, the tool post movement range top surface opening 9 and the front side top surface opening are formed. The portion 12 and the front side circumferential surface opening 11 are in communication with each other so that a vast opening is formed.

  That is, in this embodiment, the tool post moving range top surface opening 9, the front side top surface opening 12, and the front side peripheral surface opening 11 are opened in a communicating state, so that the front side of the cover body 2 is wide. A simple opening is formed so that the workpiece W can be placed on the table 1 in a suspended state or collected.

  Further, when the front top surface portion 10 of this embodiment is slid in the opening direction, the front top surface portion 10 does not interfere with the ram 18 and retreats in a retreat space portion 19 formed between the table 1 and the fixed peripheral surface portion 5 of the peripheral surface portion 3. It is configured to do.

  In other words, in the present embodiment, when the movable peripheral surface portion 6 and the front top surface portion 10 are opened, the movable peripheral surface portion 6 and the front top surface portion 10 are retracted to a position where they do not interfere with the movement of the ram 18. The ram 18 is moved to the workpiece measurement position while the surface opening 11 and the front side top surface opening 12 are open, so that the workpiece measurement operation can be performed even when the inside of the cover body 2 is visible from the outside.

  Further, as shown in FIG. 3, the fixed top surface portion 15 covers the upper portion between the table 1 and the fixed peripheral surface portion 5 of the peripheral surface portion 3 and is covered by the tool post following moving top surface portion 8. It is comprised so that the back side (upper side upper side of the table 1) of the opening part 9 may be covered.

  In the present embodiment, the fixed top surface portion 15 serves as a base of the top surface portion 4, the front top surface portion 10 moves so as to overlap the upper surface side of the fixed top surface portion 15, and the tool post following moving top surface portion 8 is The upper surface side of the front top surface portion 10 and the fixed top surface portion 15 is moved so as to cover the tool post moving range top surface opening 9 formed between the front top surface portion 10 and the fixed top surface portion 15. Yes.

  In the present embodiment, when the turret following moving top surface portion 8 moves on the front top surface portion 10 and the fixed top surface portion 15, the top surface portion 10 and the fixed top surface are moved so that the top surface portions move smoothly without rubbing against each other. The tool post following moving top surface portion 8 is provided with a gap with respect to the surface portion 15.

  However, if a gap is formed between the front top surface portion 10, the fixed top surface portion 15, and the tool post following moving top surface portion 8, there is a possibility that coolant is scattered from the gap to the outside of the cover body 2. Therefore, in this embodiment, as shown in FIG. 9, a gap filling member 17 is provided between the front top surface portion 10, the fixed top surface portion 15 and the tool post following moving top surface portion 8, so that the coolant is scattered outside. It is set as the structure which prevented.

  Specifically, the gap filling member 17 is configured to be provided on the upper surfaces of the front top surface portion 10 and the fixed top surface portion 15 along the tool post movement range top surface opening 9. The gap filling member 17 may be provided on the back surface of the tool post following moving top surface portion 8.

  As described above, the present embodiment does not cover the entire machine tool with the cover body 2 but covers only the moving space of the ram 18 provided below the table 1 and the tool rest 7 with the cover body 2. The body 2 can be miniaturized and the cost can be reduced, and the splash range of the coolant and cutting chips is narrowed, so that there is no splash on the tool post 7 and the cross rail, and failure due to the splash of coolant is made as much as possible. In addition, the machine tool itself can be reduced in size, and the degree of freedom of installation location is improved.

  In addition, in this embodiment, since the movable peripheral surface portion 6 is configured to slide open and close while maintaining good accessibility to the circular table 1, the cover body is moved when the movable peripheral surface portion 6 is moved in the opening direction. The front peripheral surface opening portion 11 formed on the front surface side of the peripheral surface portion 2 is an opening portion having good accessibility to the circular table 1, so that the operator's hand can easily reach the table 1. This makes it easier to install and collect.

  Further, in the present embodiment, the position of the center of curvature Oc of the peripheral surface portion 3 having a circular arc shape in plan view is shifted to the left or right side with respect to the center Ot of the table 1. In this space, the front top surface portion 10 provided to be openable and closable at the front side top surface opening portion 12 can be retracted and moved so that the front top surface portion 10 can be opened even when the front top surface portion 10 is opened. It is possible to move the tool rest 7 without interfering with the top surface portion 10, and the movement range of the tool rest 7 with the front top surface portion 10 left open is widened, thereby improving workability.

  Further, in this embodiment, since the tool post following moving top surface part 8 is moved together with the tool rest 7, even if the upper surface of the table 1 is covered with the top surface part 4, the tool rest 7 does not interfere with the top surface part 4. The tool post 7 can be moved and processed while the fully closed state is maintained. Therefore, it is possible to reliably prevent the coolant and cutting waste from being scattered outside the cover body 2 during the processing. Can do.

  Furthermore, since the present embodiment has a configuration in which the tool post movement range top surface opening 9, the front side top surface opening 12, and the front side peripheral surface opening 11 can be opened in a communication state, It is possible to form a large opening on the front side, and for this reason, for example, a large work W can be installed and collected on the table 1 in a suspended state, and workability is improved.

  As described above, the present embodiment is provided with the small fully-closed cover body 2 excellent in accessibility to the circular table 1, thereby improving workability around the table 1 such as work W installation / recovery work. It is an innovative machine tool with excellent practicality that can be provided at low cost as well as excellent anti-scattering performance of coolant and cutting waste.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Table 2 Cover body 3 Peripheral surface part 4 Top surface part 5 Fixed peripheral surface part 6 Moving peripheral surface part 7 Tool post 8 Turret following movement top surface part 9 Tool post movement range top surface opening part
10 Front top
11 Front side opening
12 Front top opening
13 Fixed part
14 Opening / closing part
15 Fixed top
16 Inner cover
17 Gap filling member W Work Oc Center of curvature Ot Table center Rc Curvature radius Rt Table radius

Claims (8)

  In a machine tool that covers a circular table on which a workpiece is placed and includes a cover body that prevents the scattering of coolant and cutting waste during workpiece machining, the cover body covers the circumferential surface portion that surrounds the side of the table and the upper side. It is configured as a fully-enclosed cover body including a top surface portion to cover, and the peripheral surface portion has a center of curvature located on either the left or right side and a back side with respect to the center of the table, and a radius of curvature of the table. A curved peripheral surface having a circular arc shape in plan view larger than the radius is formed, and a fixed peripheral surface portion that surrounds one of the left and right sides of the table and a side of the front side of the table are enclosed. When the movable peripheral surface is slid and moved in the opening direction, the movable peripheral surface is overlapped with the fixed peripheral surface as a configuration comprising a movable peripheral surface provided slidably with respect to the fixed peripheral surface. Hippopotamus It is configured so that the front side of the body is in an open state, and the top surface part is on the front side of the turret following movement top surface part that moves together with the turret protruding upward from the top surface part, and on the front side of the turret following movement top surface part. The turret includes a front top surface portion provided in an adjacent state, and the turret following moving top surface portion is detachably or undulatingly rotatable, slidably movable, or extendable and is covered by the turret following moving top surface portion. The turret movement range for moving the turret is configured to be openable and closable, and the front top surface is provided so as to be retractable along the peripheral surface, and is covered with the front top surface. The turret movement range top surface opening and the front side top surface opening communicate with the front side peripheral surface opening that opens when the movable peripheral surface of the peripheral surface is opened and moved. The configuration provided in the state Machine tool according to claim.   The turret following movement top surface portion is formed in a band plate shape, provided in a projecting state on both sides in the moving direction of the turret, and configured to move together with the turret. The machine tool according to claim 1, wherein the tool post is configured to maintain a closed state of the top surface opening of the tool rest moving range in a state of moving during machining.   The turret following moving top surface portion is composed of a fixed portion provided in a fixed state on the turret and an opening / closing portion provided so as to be able to swing up and down, and provided so as to be opened and closed. The machine tool according to any one of claims 1 and 2, wherein the turret movement range top surface opening portion is in an open state.   When the moving peripheral surface portion, the front top surface portion, and the tool post following moving top surface portion are opened, the front side peripheral surface opening portion, the front side top surface opening portion, and the tool post moving range top surface opening portion are provided. The machine tool according to any one of claims 1 to 3, wherein the machine tool is configured to open in a communication state.   As the configuration in which the moving peripheral surface portion and the front top surface portion are connected in series and the front top surface portion is opened and closed together with the moving peripheral surface portion, when the moving peripheral surface portion is moved in the opening direction, the front top surface portion is also moved open. Then, on the front side of the cover body, the front-side peripheral surface opening and the front-side top surface opening are configured to be opened in a communication state at the same time. The machine tool according to claim 1.   The top surface portion includes the turret following moving top surface portion, the front top surface portion, and a fixed top surface portion that covers either the left or right side of the table, and the front top surface portion slides with respect to the fixed top surface portion. Provided to be movable, and when the front top surface portion is slid in the opening direction, the front top surface portion is overlapped with the fixed top surface portion and the front side top surface opening portion is in an open state. A machine tool according to any one of claims 1 to 5.   2. An inner cover portion for preventing scattering of coolant and cutting chips during workpiece machining is provided inside the fixed peripheral surface portion, and the inner cover portion is provided on a concentric circle at the center of the table. The machine tool according to any one of? 6.   A gap filling member is provided on the lower surface of the turret following movement top surface portion or the upper surface of the front top surface portion to fill a gap formed between the turret following movement top surface portion and the front top surface portion. The machine tool according to any one of claims 1 to 7, wherein the machine tool is configured to prevent scattering of coolant and cutting waste during workpiece machining.

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