A tool assembly with compensation function

Abstract

The utility model provides a tool assembly with compensation function, including a base and a tool. The base is provided with a fixed seat and a guide rail. The guide rail is slidably connected with a sliding seat. The fixed seat is provided with a motor. The output shaft of the motor is connected with a screw rod. The sliding seat is provided with a screw rod nut connected with the screw rod. The sliding seat is provided with a tool installation groove for connecting the tool. The lower side of the tool installation groove is provided with a wedge groove, the bottom surface of the wedge groove is an inclined surface, a wedge block is provided in the wedge groove, and the upper and lower sides of the wedge block are respectively provided with an upper side inclined surface and a lower side inclined surface. A tool head is provided at one end of the tool, and a clamping inclined surface is provided at the lower side of the other end of the tool. A tightening mechanism for tightening the wedge block is connected to the sliding seat. In the utility model, when the length direction of the tool changes, the motor drives the screw rod to rotate to move the sliding seat along the guide rail, thereby moving the tool as a whole, and the length change of the tool is compensated by moving the tool, thereby ensuring the processing accuracy of the parts.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tools, in particular to a tool assembly with a compensation function. Background Art

[0002] In existing machine tool processing, the workpiece is cut by a tool. In traditional machine tools, the tool is directly fixed on the tool holder by screws.

[0003] However, in the actual processing, due to factors such as temperature changes and tool wear during processing, the overall length of the tool will change slightly. In traditional lathes, since the tool is directly fixed on the tool holder, it is difficult to compensate for the change in tool length, which affects the processing accuracy of parts.

[0004] Secondly, since the existing tool fixing methods all use screws to directly tighten and fix, this fixing method has poor stability. The screws are prone to loosening during the processing process, causing the tool to loosen to a certain extent, which will seriously affect the processing accuracy. Summary of the invention

[0005] The utility model aims to solve the deficiencies in the prior art and provide a tool assembly with a compensation function.

[0006] The purpose of the utility model is achieved through the following technical solutions: a tool assembly with compensation function, including a base, a tool, a fixed seat and a guide rail are provided on the base, a sliding seat is slidably connected to the guide rail, a motor is provided on the fixed seat, a lead screw is connected to the output shaft of the motor, and a lead screw nut connected to the lead screw is provided on the sliding seat; a tool mounting groove for connecting the tool is provided on the sliding seat;

[0007] A wedge-shaped groove is provided at the lower side of the tool installation groove, the bottom surface of the wedge-shaped groove is an inclined surface, a wedge block is provided in the wedge-shaped groove, and an upper inclined surface and a lower inclined surface are provided at the upper and lower sides of the wedge block respectively; a tool head is provided at one end of the tool, a clamping inclined surface is provided at the lower side of the other end of the tool, and a tightening mechanism for tightening the wedge block is connected to the sliding seat;

[0008] When the tool is installed in the tool installation groove, the upper inclined surface on the wedge block contacts the clamping inclined surface on the tool, and the lower inclined surface on the wedge block contacts the bottom surface of the wedge-shaped groove.

[0009] In the utility model, the base is arranged on the machine tool. When the length direction of the tool changes, the motor drives the screw to rotate. When the screw rotates, the cooperation between the screw and the screw nut causes the sliding seat to move along the guide rail, thereby causing the tool to move as a whole. The length change of the tool is compensated by the movement of the tool, thereby ensuring the machining accuracy of the parts. In addition, the utility model changes the traditional installation method of directly tightening the tool with a screw, and uses a wedge to wedge the tool. When installing, first insert one end of the tool into the tool installation groove, and then use the tightening mechanism to hold the wedge to move and make the wedge firmly wedge the tool, thereby effectively improving the stability of the tool installation, making it difficult for the tool to loosen, and avoiding the influence on the machining accuracy due to the loosening of the tool.

[0010] Preferably, an auxiliary fixing screw for tightening the tool is connected to the lower side of the tool mounting groove.

[0011] Preferably, the tightening mechanism comprises a first threaded hole arranged on the wedge sliding seat, the first threaded hole is located at one end of the wedge-shaped groove, a tightening screw is connected to the first threaded hole, and one end of the tightening screw faces the wedge block.

[0012] Preferably, a second threaded hole is provided on the sliding seat, the first threaded hole and the second threaded hole are respectively located at two ends of the wedge-shaped groove, and an auxiliary disassembly screw is connected to the second threaded hole.

[0013] Preferably, the angle between the upper inclined surface and the lower inclined surface is 6°-10°.

[0014] Preferably, the output shaft of the motor is connected to the screw rod via a coupling.

[0015] Preferably, the motor is a servo motor.

[0016] The beneficial effects of the utility model are:

[0017] 1. In the utility model, when the length direction of the tool changes, the motor drives the lead screw to rotate. When the lead screw rotates, the cooperation between the lead screw and the lead screw nut causes the sliding seat to move along the guide rail, thereby causing the tool to move as a whole. The change in the length of the tool is compensated by moving the tool, thereby ensuring the processing accuracy of the parts.

[0018] 2. The utility model changes the traditional installation method of directly tightening the tool with screws, and uses a wedge block to wedge the tool. During installation, one end of the tool is first inserted into the tool installation groove, and then the wedge block is supported by the tightening mechanism to move and the wedge block firmly wedges the tool, thereby effectively improving the stability of the tool installation, making it difficult for the tool to loosen, and avoiding the influence of the loose tool on the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the utility model.

[0020] Figure 2 Schematic diagram of the tool structure.

[0021] Figure 3 Schematic diagram of the structure of the wedge.

[0022] In the figure: 1, base, 2, fixed seat, 3, motor, 4, coupling, 5, lead screw, 6, sliding seat, 7, guide rail, 8, slider, 9, lead screw nut, 10, tool, 11, tool mounting groove, 12, wedge groove, 13, wedge block, 14, tightening screw, 15, auxiliary fixing screw, 16, auxiliary disassembly screw, 17, tool head, 18, clamping bevel, 20, upper bevel, 21, lower bevel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] like Figures 1 to 3 As shown, a tool assembly with compensation function includes a base 1 and a tool 10. The base 1 is provided with a fixed seat 2 and a guide rail 7. A sliding seat 6 is slidably connected to the guide rail 7. A motor 3 is provided on the fixed seat 2. A lead screw 5 is connected to the output shaft of the motor 3. The output shaft of the motor 3 and the lead screw 5 are connected through a coupling 4. The lead screw 5 is arranged parallel to the guide rail 7. A lead screw nut 9 connected to the lead screw 5 is provided on the sliding seat 6. A tool mounting groove 11 for connecting the tool 10 is provided on the sliding seat 6.

[0026] A wedge-shaped groove 12 is provided at the lower side of the tool installation groove 11, and the wedge-shaped groove 12 is connected to the tool installation groove 11. The bottom surface of the wedge-shaped groove 12 is an inclined surface, so that the groove depth at one end of the wedge-shaped groove 12 is greater than the groove depth at the other end. A wedge block 13 is provided in the wedge-shaped groove 12, and an upper side inclined surface 20 and a lower side inclined surface 21 are provided on the upper and lower sides of the wedge block 13, respectively. In this embodiment, the angle between the upper side inclined surface 20 and the lower side inclined surface 21 is 6°-10°.

[0027] A cutter head 17 is provided at one end of the cutter 10 , a clamping inclined surface 18 is provided at the lower side of the other end of the cutter 10 , and a tightening mechanism for tightening the wedge block 13 is connected to the sliding seat 6 .

[0028] When the tool 10 is installed in the tool mounting groove 11, the upper inclined surface 20 on the wedge block 13 contacts the clamping inclined surface 18 on the tool 10, and the upper inclined surface 20 on the wedge block 13 is parallel to the clamping inclined surface 18 on the tool 10; the lower inclined surface 21 on the wedge block 13 contacts the bottom surface of the wedge-shaped groove 12, and the lower inclined surface 21 on the wedge block 13 is parallel to the bottom surface of the wedge-shaped groove 12.

[0029] In the utility model, the base 1 is arranged on the machine tool. When the length direction of the tool 10 changes, the motor 3 drives the screw 5 to rotate. When the screw 5 rotates, the cooperation between the screw 5 and the screw nut 9 causes the sliding seat 6 to move along the guide rail 7, thereby causing the tool 10 to move as a whole. The length change of the tool 10 is compensated by moving the tool 10, thereby ensuring the machining accuracy of the parts. In addition, the utility model changes the traditional installation method of directly tightening the tool 10 with a screw, and uses a wedge block 13 to wedge the tool 10. When installing, first insert one end of the tool 10 into the tool installation groove 11, and then use the tightening mechanism to hold the wedge block 13 to move and make the wedge block 13 firmly wedge the tool 10, thereby effectively improving the stability of the installation of the tool 10, making it difficult for the tool 10 to loosen, and avoiding the influence of the loosening of the tool 10 on the machining accuracy.

[0030] It should be noted that when the wedge block 13 moves to the end of the wedge groove 12 with a larger groove depth, the distance between the uppermost end of the wedge block 13 and the top of the tool mounting groove 11 is greater than the maximum thickness of the tool 10 so that the tool 10 can be normally inserted into the tool mounting groove 11.

[0031] Specifically, the tightening mechanism includes a first threaded hole provided on the wedge sliding seat 6, the first threaded hole is located at one end of the wedge-shaped groove 12, a tightening screw 14 is connected to the first threaded hole, and one end of the tightening screw 14 faces the wedge block 13. By rotating the tightening screw 14, the front end of the tightening screw 14 presses against the wedge block 13 and pushes it to move, thereby tightening the wedge block 13.

[0032] In order to facilitate the disassembly of the tool 10, a second threaded hole is provided on the sliding seat 6, and the first threaded hole and the second threaded hole are respectively located at the two ends of the wedge groove 12, and the second threaded hole is connected with an auxiliary disassembly screw 16. When disassembling the tool 10, first rotate the tightening screw 14 to loosen the wedge block 13. Since the wedge block 13 is still in a wedging state, it is difficult to remove the tool 10. At this time, the auxiliary disassembly screw 16 can be rotated to make the auxiliary disassembly screw 16 push the wedge block 13 in the direction opposite to the wedging direction to loosen the wedge block 13, and then the tool 10 can be taken out of the tool installation groove 11; in this way, it is convenient to disassemble the tool 10.

[0033] The lower side of the tool installation groove 11 is connected with an auxiliary fixing screw 15 for tightening the tool 10. The upper end of the auxiliary fixing screw 15 faces the lower side of the tool 10, and the auxiliary fixing screw 15 is threadedly connected to the sliding seat 6. The utility model uses the wedge block 13 to wedge the tool 10 as the main fixing method of the tool 10, and uses the auxiliary fixing screw 15 to tighten the tool 10 as the auxiliary fixing method. By combining the two, the stability of the installation of the tool 10 is further improved.

[0034] In this embodiment, the motor 3 is a servo motor 3. The servo motor 3 has high rotation accuracy and can achieve precise compensation.

[0035] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A tool assembly with compensation function, characterized in that: It includes a base and a tool. The base is provided with a fixed seat and a guide rail. The guide rail is slidably connected with a sliding seat. The fixed seat is provided with a motor. The output shaft of the motor is connected with a lead screw. The sliding seat is provided with a lead screw nut connected with the lead screw. The sliding seat is provided with a tool mounting groove for connecting the tool. A wedge-shaped groove is provided at the lower side of the tool installation groove, the bottom surface of the wedge-shaped groove is an inclined surface, a wedge block is provided in the wedge-shaped groove, and an upper inclined surface and a lower inclined surface are provided at the upper and lower sides of the wedge block respectively; a tool head is provided at one end of the tool, a clamping inclined surface is provided at the lower side of the other end of the tool, and a tightening mechanism for tightening the wedge block is connected to the sliding seat; When the tool is installed in the tool installation groove, the upper inclined surface on the wedge block contacts the clamping inclined surface on the tool, and the lower inclined surface on the wedge block contacts the bottom surface of the wedge-shaped groove.

2. A tool assembly with compensation function according to claim 1, characterized in that: An auxiliary fixing screw for tightening the tool is connected to the lower side of the tool installation groove.

3. A tool assembly with compensation function according to claim 1, characterized in that: The tightening mechanism comprises a first threaded hole arranged on the wedge sliding seat, the first threaded hole is located at one end of the wedge-shaped groove, a tightening screw is connected in the first threaded hole, and one end of the tightening screw faces the wedge block.

4. A tool assembly with compensation function according to claim 3, characterized in that: The sliding seat is provided with a second threaded hole, the first threaded hole and the second threaded hole are respectively located at two ends of the wedge-shaped groove, and an auxiliary disassembly screw is connected to the second threaded hole.

5. A tool assembly with compensation function according to claim 1, 2, 3 or 4, characterized in that: The angle between the upper inclined surface and the lower inclined surface is 6°-10°.

6. A tool assembly with compensation function according to claim 1, 2, 3 or 4, characterized in that: The output shaft of the motor is connected to the lead screw via a coupling.

7. A tool assembly with compensation function according to claim 1, 2, 3 or 4, characterized in that: The motor is a servo motor.

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