Boring bar for vertical lathe

Abstract

The utility model relates to the technical field of vertical lathe machining, in particular to a boring bar for a vertical lathe, which comprises a U-shaped seat matched with tool grooves in three directions of a tool apron of the vertical lathe and used for mounting the U-shaped seat on the tool apron of the vertical lathe. One end of the boring bar body is connected with the opposite side of the opening of the U-shaped seat, and the other end of the boring bar body is provided with a boring bar tool apron; according to the utility model, the U-shaped seat is arranged on the boring bar, and the U-shaped seat is matched with the original cutter groove structure of the vertical lathe cutter holder, so that the U-shaped seat is inserted into the cutter groove of the original vertical lathe cutter holder and is fixed by installing the fastening screw, and the original vertical lathe cutter holder does not need to be dismantled. The problem that an accessory boring rod needs to be replaced by disassembling and assembling an original vertical lathe tool apron is solved, and the vertical lathe tool apron is free of disassembling and assembling.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical lathe processing, in particular to a boring bar for vertical lathe. Background Art

[0002] During large vertical lathe processing, the tool is installed on the vertical lathe tool holder at the bottom of the vertical lathe slide. The vertical lathe tool holder has tool grooves in three directions formed by a clamping part and a supporting part. The tool is installed in the tool groove in one direction by a fastening screw for processing.

[0003] When turning the center hole of a part, if the hole diameter is small, the vertical lathe tool holder cannot be inserted into the hole for turning. At this time, the tool holder needs to be disassembled and the accessory boring bar replaced. After the hole processing is completed, the boring bar is disassembled and replaced with the tool holder. The tool holder, accessory boring bar and machine tool slide of the heavy vertical lathe have high assembly precision and are difficult to disassemble and assemble. In addition, the tool holder and accessory boring bar are relatively heavy, and it is inconvenient to disassemble, install and carry them manually. Utility Model Content

[0004] The purpose of the utility model is to provide a boring bar for a vertical lathe to solve the problem that when machining a small-diameter center hole by a vertical lathe, the vertical lathe tool holder cannot be inserted into the hole for turning, and the vertical lathe tool holder must be disassembled to replace the accessory boring bar. In order to achieve the above purpose, the utility model solves the problem through the following technical solutions:

[0005] The utility model provides a boring bar for a vertical lathe, comprising:

[0006] The U-shaped seat is adapted to the tool grooves in three directions of the vertical lathe tool holder and is used to install it on the vertical lathe tool holder;

[0007] The boring bar body has one end connected to the opposite side of the U-shaped seat opening and the other end provided with a boring bar tool holder.

[0008] As a further technical solution, a positioning step is provided between the U-shaped seat and the boring bar body, and the width of the positioning step is greater than the tool groove spacing of the vertical lathe tool holder.

[0009] As a further technical solution, the thickness of the U-shaped seat is smaller than the tool groove spacing of the vertical lathe tool holder.

[0010] As a further technical solution, a through hole is provided on the U-shaped seat, which corresponds to the position of the fastening screw through hole on the vertical lathe tool holder.

[0011] As a further technical solution, it also includes a fastening screw, which is a stepped shaft structure, and the stepped surface of the fastening screw abuts against the U-shaped seat in the working state.

[0012] As a further technical solution, the boring bar tool holder has a tool mounting groove.

[0013] As a further technical solution, the boring bar body is a cylindrical rod.

[0014] The beneficial effects of the above utility model are as follows:

[0015] (1) The utility model provides a U-shaped seat on the boring bar, and utilizes the original tool groove structure of the vertical lathe tool holder. The U-shaped seat only needs to be inserted into the tool groove of the original vertical lathe tool holder and fixed by installing the fastening screws, and the original vertical lathe tool holder no longer needs to be removed. The problem of having to disassemble the original vertical lathe tool holder to replace the accessory boring bar is solved, and the vertical lathe tool holder can be installed without disassembly.

[0016] (2) A positioning step is provided between the U-shaped seat and the boring bar body of the utility model, and the width of the positioning step is greater than the spacing between the tool grooves of the vertical lathe tool holder. When installed, it fits on the lower surface of the pressing part and the supporting part of the vertical lathe tool holder, and is used to align the through hole provided in the U-shaped seat with the through hole provided in the vertical lathe tool holder, thereby ensuring the smooth installation of the U-shaped seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute a limitation of the present invention. It should also be understood that these drawings are shown for simplicity and clarity and are not necessarily drawn to scale. The present invention will now be described and explained with additional features and details through the use of the drawings, in which:

[0018] Figure 1 The schematic diagram of the front view of the assembly structure of the boring bar for a vertical lathe and the ram of a vertical lathe in the embodiment of the utility model is shown;

[0019] Figure 2 A schematic side view of the assembly structure of a boring bar for a vertical lathe and a ram for a vertical lathe in an embodiment of the utility model is shown;

[0020] Figure 3 A schematic front view of a boring bar for a vertical lathe in an embodiment of the utility model is shown;

[0021] Figure 4 A schematic side view of a boring bar for a vertical lathe in an embodiment of the utility model is shown;

[0022] Figure 5 A schematic diagram showing the connection or separation of a boring bar for a vertical lathe with a vertical lathe ram in an embodiment of the utility model is shown.

[0023] In the figure: 1. boring bar for vertical lathe; 11. U-shaped seat; 12. positioning step; 13. boring bar body; 14. boring bar tool holder; 15. through hole; 16. tool mounting groove; 2. vertical lathe slide; 3. vertical lathe tool holder; 31. supporting part; 32. clamping part; 4. fastening screw; 5. boring bar holder. DETAILED DESCRIPTION

[0024] The technical solutions in typical embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] The structure of the vertical lathe slide 2 and the vertical lathe tool holder 3 is as follows: Figure 1 and Figure 2 As shown, in the prior art, during large vertical lathe processing, the tool is installed on the vertical lathe tool holder 3 at the lower part of the vertical lathe slide 2. The vertical lathe tool holder 3 has tool grooves in three directions formed by a clamping portion 32 and a supporting portion 31. The tool is installed in the tool groove in one direction by a fastening screw for processing.

[0026] In order to solve the problem that the vertical lathe tool holder must be disassembled to replace the accessory boring bar when machining a small-diameter center hole, this embodiment provides a boring bar for a vertical lathe, including a U-shaped seat 11, a positioning step 12, a boring bar body 13, and a boring bar tool holder 14.

[0027] In this embodiment, the U-shaped seat 11 is adapted to the tool grooves in three directions of the vertical lathe tool holder 3. After the tool grooves in three directions of the vertical lathe tool holder 3 are formed, a rectangular protrusion structure is actually formed in the middle thereof, which is used to place the tool. The overall structure is in an inverted T shape after being cut open, as shown in FIG. Figure 1 The groove of the U-shaped seat 11 of this embodiment cooperates with the protruding structure of the vertical lathe tool holder 3 to limit the horizontal freedom of the U-shaped seat 11. It cannot be seen that the function of the U-shaped seat is to install the boring bar on the vertical lathe tool holder 3.

[0028] It can be seen that, in this embodiment, by arranging the U-shaped seat 11 on the boring bar and utilizing the original tool groove structure of the vertical lathe tool holder 3, it is only necessary to insert the U-shaped seat 11 into the tool groove of the original vertical lathe tool holder and fix it by installing the fastening screws, and it is no longer necessary to remove the original vertical lathe tool holder. This solves the problem of having to disassemble the original vertical lathe tool holder to replace the accessory boring bar, and realizes the non-disassembly of the vertical lathe tool holder.

[0029] like Figure 2 As shown, the thickness of the U-shaped seat 11 is less than the spacing between the tool grooves of the vertical lathe tool holder 3 , so that there is a gap between the tool grooves of the vertical lathe tool holder and the U-shaped seat 11 , which facilitates the insertion of the U-shaped seat 11 .

[0030] like Figure 2 As shown, the through hole 15 provided on the U-shaped seat 11 corresponds to the position of the fastening screw through hole on the vertical lathe tool holder 3. The U-shaped seat 11 and the vertical lathe tool holder 3 are fixed by the fastening screw 4. In this embodiment, the fastening screw 4 is a stepped shaft structure, and the step surface of the fastening screw 4 abuts against the U-shaped seat 11 in the working state.

[0031] The fastening screw is provided with two threads M1 and M2. The thread M1 is screwed into the screw hole of the clamping part 32, and the step surface is pressed onto the U-shaped seat 11. The thread M2 passes through the through hole of the U-shaped seat and the hole of the supporting part. The mounting nut is tightened to tighten the clamping part 32 and the supporting part 31 of the vertical lathe tool holder 3 to achieve fixed installation of the U-shaped seat 11.

[0032] like Figure 3 and Figure 4 As shown, a positioning step 12 is provided between the U-shaped seat 11 and the boring bar body 13. The width of the positioning step 12 is greater than the spacing of the tool grooves of the vertical lathe tool holder 3, and its purpose is to fit on the lower surface of the pressing portion 32 and the supporting portion 31 of the vertical lathe tool holder 3 during installation. The positioning step 12 is used to align the through hole 15 provided in the U-shaped seat 11 with the through hole provided in the vertical lathe tool holder 3, so as to ensure the smooth installation of the U-shaped seat 11.

[0033] like Figure 3 and Figure 4 As shown, the boring bar body 13 is a cylindrical rod, one end of which is connected to the side opposite to the opening of the U-shaped seat 11, and the other end is provided with a boring bar tool holder 14. The boring bar tool holder 14 has a tool mounting groove 16, and the tool mounting groove 16 is used to mount a tool.

[0034] The boring bar of this embodiment is also equipped with a boring bar rack 5, which is used to place the boring bar rack vertically to avoid the risk of tipping. The boring bar rack 5 is fixedly installed next to the machine tool and within the X-direction travel of the vertical lathe tool holder. The boring bar rack 5 can use an ordinary support rack in the prior art, as long as it can support the boring bar 1 for vertical lathe and keep it in a vertical state. There are no other excessive requirements, and the structure will not be described in detail here.

[0035] like Figure 5 As shown, during installation, the vertical lathe boring bar 1 of this embodiment is placed on the boring bar rack 5, the vertical lathe slide 2 drives the vertical lathe tool holder 3 to move above the vertical lathe boring bar 1, the vertical lathe slide 2 moves down, and the U-shaped seat 11 of the vertical lathe boring bar 1 is inserted into the tool groove of the vertical lathe tool holder 3, and the fastening screws are inserted respectively to fix it.

[0036] During disassembly, the vertical lathe slide 2 and the vertical lathe boring bar 1 are moved to the top of the boring bar frame 5, moved down to contact the boring bar frame 5, the fastening screws are removed, and the vertical lathe slide 2 is moved upward to separate the vertical lathe tool holder 3 from the vertical lathe boring bar 1.

[0037] Although the utility model has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field can make possible changes and modifications to the technical solution of the utility model by using the methods and technical contents disclosed above without departing from the spirit and scope of the utility model. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A boring bar for a vertical lathe, characterized in that: include: The U-shaped seat is adapted to the tool grooves in three directions of the vertical lathe tool holder and is used to install it on the vertical lathe tool holder; The boring bar body has one end connected to the opposite side of the U-shaped seat opening and the other end provided with a boring bar tool holder.

2. A boring bar for a vertical lathe according to claim 1, characterized in that: A positioning step is provided between the U-shaped seat and the boring bar body, and the width of the positioning step is greater than the tool groove spacing of the vertical lathe tool seat.

3. A boring bar for vertical lathe according to claim 2, characterized in that: The thickness of the U-shaped seat is smaller than the tool groove spacing of the vertical lathe tool seat.

4. A boring bar for a vertical lathe as claimed in claim 3, characterized in that: The U-shaped seat is provided with a through hole corresponding to the position of the fastening screw through hole on the vertical lathe tool holder.

5. A boring bar for vertical lathe according to claim 4, characterized in that: It also includes a fastening screw, which is a stepped shaft structure, and in a working state, the stepped surface of the fastening screw abuts against the U-shaped seat.

6. A boring bar for vertical lathe according to claim 1, characterized in that: The boring bar tool holder has a tool mounting groove.

7. A boring bar for vertical lathe according to claim 1, characterized in that: The boring bar body is a cylindrical rod.

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