Lathe tool clamping mechanism

Abstract

The utility model discloses a lathe tool clamping mechanism, and relates to the technical field of lathe tool clamping, the lathe tool clamping mechanism comprises a tool apron assembly composed of a convex base, a top plate and a clamping bolt, and a block-up assembly, the block-up assembly is used for supporting a tool and realizing alignment operation of tools with different thicknesses and a workpiece rotation center; the heightening assembly comprises an adjusting unit, a supporting unit and a locking unit. The adjusting unit is used for achieving alignment of tools with different thicknesses and the rotation center of the workpiece. The supporting unit is used for supporting a cutter handle of a cutter; the locking unit is used for locking the adjusting unit and the supporting unit. By arranging the heightening assembly, rapid alignment operation of the cutter and the rotation center of a workpiece can be achieved, when the horizontal cushion block moves backwards, the convex supporting arm can still well support a cutter handle of the cutter, and the situation that the suspension length of the front end of the cutter handle of the cutter is too long, and then the using stability of the cutter is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tool clamping, in particular to a lathe tool clamping mechanism. Background Art

[0002] A lathe is a machine tool that mainly uses a turning tool to perform turning processing on a rotating workpiece. When a CNC lathe processes parts, the tool motion trajectory of the machine tool should be strictly controlled according to the program instructions. If the tool tip is higher or lower than the center of rotation of the workpiece during tool setting, the actual motion trajectory will not coincide with the theoretical contour trajectory of the part.

[0003] However, the tool clamping device of traditional CNC lathes often does not have the function of adjusting the tool up and down. Generally, when there is a deviation in tool setting, a gasket is added to the lower side of the tool holder so that the tip of the turning tool reaches the center of rotation of the workpiece. Sometimes the turning tool is lower than the center of rotation of the workpiece, and the tool holder can only be processed or replaced with a small tool holder and a gasket is added to reach the center of rotation of the workpiece. The wear of the CNC lathe during use and the irregular shape of the workpiece will cause the tool to not coincide with the center of rotation of the workpiece during tool setting. Although the traditional method of adding gaskets to the tool setting can solve this problem, it will be affected by the thickness of the gasket, which often leads to large errors, consumes a lot of time and manpower, and reduces work efficiency. Summary of the Invention

[0004] The purpose of the present utility model is to provide a lathe tool clamping mechanism in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a lathe tool clamping mechanism, comprising a tool holder assembly consisting of a convex base, a top plate, and a clamping bolt, wherein the top plate is fixed to the top of the convex base protrusion by bolts, the clamping bolt is threadedly connected to the convex base around and extends to the bottom of the convex base, and a pad assembly is provided around the top of the convex base, the pad assembly is used to provide support for the tool and realize the alignment operation of the tool of different thicknesses with the rotation center of the workpiece;

[0006] The raising component includes an adjusting unit, a supporting unit, and a locking unit;

[0007] The adjustment unit is used to align the cutting tools of different thicknesses with the rotation center of the workpiece;

[0008] The support unit is used to support the handle of the tool;

[0009] The locking unit is used to lock the adjusting unit and the supporting unit.

[0010] As a further solution of the present invention: the adjustment unit includes a fixed rail, an inclined guide groove, a horizontal pad, a sliding groove, and a fixed guide block;

[0011] The fixed rail is installed on the top of the convex base edge, and the inclined guide grooves are symmetrically opened on both sides of the outer wall of the fixed rail;

[0012] The sliding groove is formed at the bottom of the horizontal pad and passes through both ends of the sliding groove. The fixed guide blocks are symmetrically formed on both sides of the inner wall of the sliding groove. The horizontal pad is sleeved on the outer side of the fixed rail through the sliding groove, and the fixed guide blocks are slidably connected to the inclined guide groove.

[0013] The bottom of the tool is attached to the upper surface of the horizontal pad, and the horizontal pad is moved along the inclined guide groove track by the fixed guide block to adjust the horizontal height of the top of the horizontal pad, thereby realizing the alignment of the tools of different thicknesses with the rotation center of the workpiece.

[0014] As a further solution of the present invention: the support unit includes a vertical convex groove, a horizontal convex groove, a convex support arm, and a convex limit block;

[0015] The vertical convex groove is opened at one end of the fixed rail and passes through the top of the fixed rail, and the horizontal convex groove is opened at the top of the horizontal pad and passes through both sides of the horizontal pad;

[0016] The convex support arm is horizontally slidably connected to the inner side of the horizontal convex groove, and the convex limit block is fixed to one end of the convex support arm and vertically slidably connected to the inner side of the vertical convex groove;

[0017] The upper surface of the convex support arm is flush with the upper surface of the horizontal pad, and the end of the convex support arm away from the convex limit block is flush with the outer wall end surface of the convex base. When the horizontal pad moves backward, the convex support arm is used to support the handle of the tool.

[0018] As a further solution of the present invention: the locking unit includes a side screw hole, a side fastening bolt, an end screw hole, and an end fastening bolt;

[0019] A plurality of side screw holes are provided on the outside of the horizontal pad and are distributed through the horizontal pad to communicate with the inner cavity of the sliding groove and the horizontal convex groove. The side fastening bolts are threadedly connected to the side screw holes and are respectively tightly fitted on the side surfaces of the fixed rail and the convex support arm, so as to achieve relative fixation between the horizontal pad and the fixed rail, and between the horizontal convex groove and the horizontal pad.

[0020] The end face screw hole is opened on the end face of the convex limit block and passes through the other end of the end face screw hole. The end face fastening bolt is threadedly connected to the end face screw hole and fits tightly against the inner wall of the vertical convex groove to achieve relative fixation of the convex limit block and the fixed rail.

[0021] As a further solution of the present invention: the top of the fixed rail and the top of the inner wall of the sliding groove are both inclined and match each other, and the width of the inner wall of the sliding groove matches the width of the outer wall of the fixed rail.

[0022] As a further solution of the present invention: the outer wall diameter of the fixed guide block matches the inner wall diameter of the inclined guide groove, and the inclination of the inclined guide groove and the fixed guide block matches the inclination of the top of the fixed rail and the top inclined surface of the inner wall of the sliding groove.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] By setting up the pad assembly, the tool and the workpiece rotation center can be quickly aligned. When the horizontal pad is moved backward, the convex support arm can still provide good support for the tool handle, avoiding the situation where the front end of the tool handle is suspended too long, which in turn affects the stability of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the heightening component of the present invention;

[0027] Figure 3 This is a structural cross-sectional view of the raising component of the present invention.

[0028] In the figure: 1. Tool holder assembly; 101. Convex base; 102. Top plate; 103. Clamping bolt; 2. Pad assembly; 201. Fixed rail; 202. Inclined guide groove; 203. Vertical convex groove; 204. Horizontal pad; 205. Sliding groove; 206. Fixed guide block; 207. Horizontal convex groove; 208. Convex support arm; 209. Convex limit block; 210. Side screw hole; 211. Side fastening bolt; 212. End screw hole; 213. End fastening bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 3In an embodiment of the present invention, a lathe tool clamping mechanism includes a tool holder assembly 1 consisting of a convex base 101, a top plate 102, and a clamping bolt 103. The top plate 102 is fixed to the top of the convex base 101 by bolts. The clamping bolt 103 is threadedly connected to the convex base 101 around and penetrates to the bottom of the convex base 101. A pad assembly 2 is provided around the top of the convex base 101. The pad assembly 2 is used to provide support for the tool to achieve alignment of tools of different thicknesses with the rotation center of the workpiece.

[0031] The raising component 2 includes an adjusting unit, a supporting unit, and a locking unit;

[0032] The adjustment unit is used to align the tool with different thicknesses with the center of rotation of the workpiece;

[0033] The support unit is used to support the handle of the tool;

[0034] The locking unit is used to lock the adjustment unit and the supporting unit;

[0035] The adjustment unit includes a fixed rail 201, an inclined guide groove 202, a horizontal pad 204, a sliding groove 205, and a fixed guide block 206;

[0036] The fixed rail 201 is installed on the top edge of the convex base 101, and the inclined guide grooves 202 are symmetrically opened on both sides of the outer wall of the fixed rail 201;

[0037] The sliding groove 205 is formed at the bottom of the horizontal pad 204 and passes through both ends of the sliding groove 205. The fixed guide blocks 206 are symmetrically formed on both sides of the inner wall of the sliding groove 205. The horizontal pad 204 is sleeved on the outer side of the fixed rail 201 through the sliding groove 205, and the fixed guide blocks 206 are slidably connected to the inclined guide groove 202.

[0038] The bottom of the tool is attached to the upper surface of the horizontal pad 204. The horizontal pad 204 moves along the inclined guide groove 202 through the fixed guide block 206 to adjust the horizontal height of the top of the horizontal pad 204, thereby achieving alignment of tools of different thicknesses with the rotation center of the workpiece;

[0039] The support unit includes a vertical convex groove 203, a horizontal convex groove 207, a convex support arm 208, and a convex limit block 209;

[0040] The vertical convex groove 203 is formed at one end of the fixed rail 201 and extends to the top of the fixed rail 201 . The horizontal convex groove 207 is formed at the top of the horizontal pad 204 and extends to both sides of the horizontal pad 204 .

[0041] The convex support arm 208 is horizontally slidably connected to the inner side of the horizontal convex groove 207, and the convex limit block 209 is fixed to one end of the convex support arm 208 and vertically slidably connected to the inner side of the vertical convex groove 203;

[0042] The upper surface of the convex support arm 208 is flush with the upper surface of the horizontal pad 204. The end of the convex support arm 208 away from the convex limit block 209 is flush with the outer wall end face of the convex base 101. When the horizontal pad 204 moves backward, the convex support arm 208 is used to support the handle of the tool.

[0043] In this embodiment, it should be noted that when the tool holder assembly 1 is in use, it is mounted on a lathe via a convex base 101. The lathe is provided with a driving assembly for driving the tool holder assembly 1 to move forward and backward, left and right, and to rotate. This structure is prior art, so it will not be described in detail.

[0044] When installing the tool on the tool holder assembly 1, the operating steps are as follows:

[0045] First, loosen the clamping bolt 103 at the corresponding position of the tool installation to ensure that there is enough space between the clamping bolt 103 and the spacer assembly 2 for the tool to be placed;

[0046] The tool is then placed on top of the horizontal pad 204. The alignment of the tool and the workpiece rotation center is measured using a measuring device. If there is a height difference between the tool and the workpiece rotation center, the horizontal pad 204 can be moved and adjusted:

[0047] When the horizontal pad 204 moves along the inclined guide groove 202 toward the rear end of the fixed track 201 through the fixed guide block 206, the height of the horizontal pad 204 rises synchronously, so that the height of the tool can be adjusted;

[0048] When the horizontal pad 204 moves along the inclined guide groove 202 toward the front end of the fixed rail 201 through the fixed guide block 206, the height of the horizontal pad 204 is synchronously lowered, so that the height of the tool can be lowered, thereby achieving the alignment operation of the tool and the rotation center of the workpiece;

[0049] After the tool height is adjusted, the clamping bolt 103 can be tightened to move the clamping bolt 103 downward to squeeze the tool, thereby clamping and fixing the tool.

[0050] During the above operation, when the height of the horizontal pad 204 is adjusted, the convex support arm 208 moves up and down synchronously with the horizontal pad 204, and its convex limit block 209 moves up and down along the vertical convex groove 203 trajectory, thereby ensuring that the height of the convex support arm 208 is synchronized with the horizontal pad 204. At the same time, the convex support arm 208 remains stationary in the horizontal direction, that is, the front end of the convex support arm 208 is always flush with the outer wall end face of the convex base 101. In this way, when the horizontal pad 204 moves backward, the convex support arm 208 can still provide good support for the handle of the tool, avoiding the situation where the front end of the handle of the tool is suspended too long, thereby affecting the stability of the tool.

[0051] Please refer to Figures 1 to 3 , the locking unit includes a side screw hole 210, a side fastening bolt 211, an end screw hole 212, and an end fastening bolt 213;

[0052] Multiple side screw holes 210 are provided on the outside of the horizontal pad 204 and extend through the horizontal pad 204 to communicate with the inner cavity of the sliding groove 205 and the horizontal convex groove 207. Side fastening bolts 211 are threadedly connected to the side screw holes 210 and tightly fit on the side surfaces of the fixed rail 201 and the convex support arm 208, respectively, to achieve relative fixation between the horizontal pad 204 and the fixed rail 201, and between the horizontal convex groove 207 and the horizontal pad 204.

[0053] The end face screw hole 212 is opened on the end face of the convex limit block 209 and passes through the other end of the end face screw hole 212. The end face fastening bolt 213 is threadedly connected to the end face screw hole 212 and fits tightly against the inner wall of the vertical convex groove 203 to achieve relative fixation of the convex limit block 209 and the fixed rail 201.

[0054] In this embodiment: when the height of the horizontal pad 204 needs to be adjusted, the side fastening bolts 211 and the end fastening bolts 213 need to be loosened. After the adjustment of the horizontal pad 204 is completed, they are tightened in sequence. In this way, the horizontal pad 204 and the fixed rail 201, the convex limit block 209 and the fixed rail 201, and the horizontal pad 204 and the convex support arm 208 are relatively fixed, thereby ensuring the stability of the heightening component 2 during use.

[0055] Please refer to Figures 1 to 3 , the top of the fixed rail 201 and the top of the inner wall of the sliding groove 205 are both inclined and match each other, and the inner wall width of the sliding groove 205 matches the outer wall width of the fixed rail 201;

[0056] The outer wall diameter of the fixed guide block 206 matches the inner wall diameter of the inclined guide groove 202 , and the inclination of the inclined guide groove 202 and the fixed guide block 206 matches the inclination of the top of the fixed rail 201 and the top of the inner wall of the sliding groove 205 .

[0057] In this embodiment, this structure can make the movement and adjustment of the horizontal pad 204 more stable without shaking or offsetting.

[0058] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A lathe tool clamping mechanism, comprising a tool holder assembly (1) consisting of a convex base (101), a top plate (102), and a clamping bolt (103), wherein the top plate (102) is fixed to the top of the convex base (101) by bolts, and the clamping bolt (103) is threadedly connected to the convex base (101) around and penetrates to the bottom of the convex base (101), characterized in that: A padding assembly (2) is provided around the top of the convex base (101), and the padding assembly (2) is used to provide support for the tool to achieve alignment of tools of different thicknesses with the rotation center of the workpiece; The raising component (2) comprises an adjusting unit, a supporting unit, and a locking unit; The adjustment unit is used to align the cutting tools of different thicknesses with the rotation center of the workpiece; The support unit is used to support the handle of the tool; The locking unit is used to lock the adjusting unit and the supporting unit.

2. A lathe tool clamping mechanism according to claim 1, characterized in that: The adjustment unit comprises a fixed rail (201), an inclined guide groove (202), a horizontal pad (204), a sliding groove (205), and a fixed guide block (206); The fixed track (201) is installed on the top edge of the convex base (101), and the inclined guide grooves (202) are symmetrically opened on both sides of the outer wall of the fixed track (201); The sliding groove (205) is opened at the bottom of the horizontal pad (204) and passes through both ends of the sliding groove (205), the fixed guide block (206) is symmetrically formed on both sides of the inner wall of the sliding groove (205), the horizontal pad (204) is sleeved on the outside of the fixed rail (201) through the sliding groove (205), and the fixed guide block (206) is slidably connected to the inclined guide groove (202); The bottom of the tool is attached to the upper surface of the horizontal pad (204), and the horizontal pad (204) moves along the track of the inclined guide groove (202) through the fixed guide block (206) to adjust the horizontal height of the top of the horizontal pad (204), thereby achieving alignment of the rotation center of tools of different thicknesses with the workpiece.

3. The lathe tool clamping mechanism according to claim 2, characterized in that: The support unit comprises a vertical convex groove (203), a horizontal convex groove (207), a convex support arm (208), and a convex limiting block (209); The vertical convex groove (203) is opened at one end of the fixed track (201) and penetrates to the top of the fixed track (201), and the horizontal convex groove (207) is opened at the top of the horizontal pad (204) and penetrates both sides of the horizontal pad (204); The convex support arm (208) is horizontally slidably connected to the inner side of the horizontal convex groove (207), and the convex limit block (209) is fixed to one end of the convex support arm (208) and vertically slidably connected to the inner side of the vertical convex groove (203); The upper surface of the convex support arm (208) is flush with the upper surface of the horizontal pad (204), and the end of the convex support arm (208) away from the convex limit block (209) is flush with the outer wall end surface of the convex base (101). When the horizontal pad (204) moves backward, the convex support arm (208) is used to support the handle of the tool.

4. The lathe tool clamping mechanism according to claim 3, characterized in that: The locking unit comprises a side screw hole (210), a side fastening bolt (211), an end screw hole (212), and an end fastening bolt (213); A plurality of side screw holes (210) are provided on the outside of the horizontal pad (204) and are distributed through the horizontal pad (204) and communicate with the inner cavity of the sliding groove (205) and the horizontal convex groove (207); the side fastening bolts (211) are threadedly connected to the side screw holes (210) and are respectively tightly fitted on the sides of the fixed rail (201) and the convex support arm (208), so as to achieve relative fixation between the horizontal pad (204) and the fixed rail (201) and the horizontal convex groove (207) and the horizontal pad (204); The end face screw hole (212) is opened on the end face of the convex limiting block (209) and passes through the other end of the end face screw hole (212). The end face fastening bolt (213) is threadedly connected to the end face screw hole (212) and is tightly fitted to the inner wall of the vertical convex groove (203) to achieve relative fixation between the convex limiting block (209) and the fixed track (201).

5. The lathe tool clamping mechanism according to claim 2, characterized in that: The top of the fixed track (201) and the top of the inner wall of the sliding groove (205) are both inclined and match each other, and the width of the inner wall of the sliding groove (205) matches the width of the outer wall of the fixed track (201).

6. The lathe tool clamping mechanism according to claim 5, characterized in that: The outer wall diameter of the fixed guide block (206) matches the inner wall diameter of the inclined guide groove (202), and the inclination of the inclined guide groove (202) and the fixed guide block (206) matches the inclination of the top of the fixed track (201) and the top of the inner wall of the sliding groove (205).

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