Tool pouch device of heavy-weight tool

Abstract

The utility model discloses a cutter sleeve device of a heavy-weight cutter, and belongs to the field of machine tool cutters. The utility model relates to a cutter sleeve device of a heavy-weight cutter, which is characterized in that the upper end part of a cutter handle is locked in a cutter holder through a locking block, an arc-shaped inclined surface is arranged on the locking block, the inner end surface of the cutter handle is in contact connection with the arc-shaped inclined surface of the locking block, shaft sleeves are transversely and fixedly arranged on two sides of the middle part of the cutter holder, and an ejector rod penetrates through the locking block and is inserted into the shaft sleeves; a compression spring is sleeved at the inner end of the ejector rod, and a match grinding gasket is sleeved outside the ejector rod between the compression spring and the locking block. According to the utility model, the weight of a cutter arranged on the cutter sleeve is increased, the traditional steel ball clamping is changed into inclined plane clamping, the original point contact is changed into surface contact, the contact area is increased, the clamping force is increased, unstable factors are reduced, the operation is convenient, the application range of the cutter sleeve is enlarged, and the production and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a tool sleeve device in an automatic tool changing mechanism of a machine tool, in particular to a tool sleeve device for a heavy tool, and belongs to the field of tool clamping of machine tools. Background Art

[0002] The tool holder for a machine tool is a key component of an automatic tool changing system. It determines the precise positioning of the tool in the tool magazine. Made of glass-fiber-reinforced unsaturated polyester, the tool holder is molded, offering low manufacturing costs, light weight, and low noise levels during operation. To achieve fast and reliable tool changes, the automatic tool changing system requires smooth, impact-free motion, and reliable operation. Automatic tool changing devices focus on shortening tool change time, minimizing interference with the machining range, ensuring tool maintenance, ensuring adequate tool magazine capacity, low vibration, high reliability, good adjustability with the main machine, and easy maintenance. A quality tool holder plays a crucial role in ensuring tool stability and consistent tool changes.

[0003] At present, the tool sleeve device adopts point contact locking tool, and the point contact locking tool usually uses a steel ball mechanism to lock the tool; the steel ball mechanism locking tool is more suitable for use on machine tools with relatively light tool weight. On some grinding tools with heavy tool weight, if this structure is used, problems such as tool falling and tool not being caught in place will occur, and a locking structure must be set up separately, which increases the production cost of the equipment and has high installation, debugging and maintenance costs. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a tool sleeve device for heavy tools, the purpose of which is to increase the weight of the clamped tool, reduce the unstable gap, increase the locking force, and facilitate operation. It improves grinding efficiency, saves production costs, and reduces installation, debugging and maintenance costs.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical solutions:

[0006] A tool sleeve device for a heavy-weight tool comprises a tool handle, a tool seat, a supporting follower, an adjusting bolt, a swing roller, a connecting base and a rotating shaft sleeve. The upper end of the tool handle is locked in the tool seat by a locking block. The locking block is provided with an arc-shaped inclined surface. The inner end surface of the tool handle is in contact and connected with the arc-shaped inclined surface of the locking block. Shaft sleeves are fixedly installed laterally on both sides of the middle part of the tool seat. A push rod passes through the locking block and is inserted into the shaft sleeve. The locking block is fixedly connected to the push rod. The inner end sleeve of the push rod is provided with a compression spring. A grinding washer is provided on the outer sleeve of the push rod between the compression spring and the locking block.

[0007] Preferably, a guide pin is inserted transversely into the upper portion of the locking block, and both ends of the guide pin are fixedly connected to the knife seat.

[0008] Preferably, the guide pin is arranged above the push rod and parallel to the push rod.

[0009] Preferably, the above-mentioned locking block is a special-shaped metal body structure, which is provided with two through holes, the upper through hole is inserted into the guide pin, and the lower through hole is inserted into the push rod. The outer side of the upper part of the special-shaped metal body is an upward inclined slope structure, and this inclined surface structure matches the inner end face of the knife seat. The outer side of the lower part of the special-shaped metal body is an inwardly concave arc groove, and the lower end face of the arc groove is a downwardly inclined arc slope, which matches the inner end face slope of the knife handle.

[0010] Preferably, the locking block is fixedly connected to the push rod via an installation pin.

[0011] Preferably, the knife holder is provided with an exhaust hole to facilitate the insertion and removal of the knife handle.

[0012] Preferably, the tool holder is provided with a positioning pin to locate the radial position of the tool handle.

[0013] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0014] This new tool holder increases the weight of the tool it holds. It switches from traditional steel ball clamping to bevel clamping, shifting from point contact to surface contact, increasing the contact area and clamping force while reducing instability. The curved bevel provides strong locking force, generating force components in both the positioning and clamping directions. Therefore, it can lock heavy tools weighing up to 16 kg. This allows for the manufacture of larger tools, thereby extending tool life, significantly reducing tool consumption costs, expanding the scope of use of the tool holder, and ensuring smooth operation during automatic tool changes. This new tool holder is easy to install, reduces unstable gaps, increases locking force, facilitates operation, improves grinding efficiency, saves production costs, and reduces installation, commissioning, and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the push rod position of the utility model.

[0018] Figure 4 A schematic diagram of the three-dimensional structure of the locking block of the present utility model.

[0019] In the figure: 1. Tool handle; 2. Locking block; 3. Compression spring; 4. Grinding washer; 5. Ejector rod; 6. Bushing; 7. Mounting pin; 8. Arc-shaped slope; 9. Tool holder; 10. Guide pin; 11. Support; 12. Support follower; 13. Adjusting bolt; 14. Swinging roller; 15. Connecting base; 16. Rotating sleeve. DETAILED DESCRIPTION

[0020] The following embodiments are only specific embodiments of the present invention. In order to make the purpose, technical solutions and advantages of the present invention clear at a glance, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The protection scope of the present invention is not limited by the embodiments.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a knife sleeve device for a heavy-weight tool, which includes a knife handle 1, a knife seat 9, a supporting follower 12, a swing roller 14, a connecting base 15 and a rotating shaft sleeve 16, wherein the upper end of the knife handle 1 is locked in the knife seat 9 by a locking block 2, and the locking block 2 is provided with an arc-shaped inclined surface. The inner end surface of the knife handle 1 is in contact with the arc-shaped inclined surface of the locking block 2, and a shaft sleeve 6 is fixedly installed on both sides of the middle part of the knife seat 9. The push rod 5 passes through the locking block 2 and is inserted into the shaft sleeve 6. The locking block 2 is fixedly connected to the push rod 5 by installing a latch 7. The push rod 5 moves axially in the shaft sleeve 6, driving the locking block 2 to move. The inner end sleeve of the push rod 5 is provided with a compression spring 3. A grinding washer 4 is provided on the outer shaft sleeve of the push rod 5 between the compression spring 3 and the locking block 2. The guide pin 10 penetrates the upper part of the locking block 2 laterally, and the two ends of the guide pin 10 are fixedly connected to the knife seat 9. The guide pin 10 is arranged above the push rod 5, and the locking block 2 can move axially on the guide pin 10.

[0022] like Figure 4 As shown, the locking block 2 is a special-shaped metal body structure with two through holes, the upper through hole is inserted into the guide pin 10, and the lower through hole is inserted into the push rod 5. The outer side of the upper part of the special-shaped metal body is an upward inclined slope structure, which matches the inner end face of the tool holder 9. The outer side of the lower part of the special-shaped metal body is an inwardly concave arc groove, and the lower end face of the arc groove is a downwardly inclined arc slope, and the arc slope 8 matches the inner end face slope of the tool handle 1.

[0023] The tool holder 9 is the main body of the tool sleeve device, which is equipped with an exhaust hole to ensure smooth insertion of the tool without compressed air generating back pressure; a positioning pin is installed on the tool holder 9 to ensure the correct installation orientation of the tool.

[0024] The structure and working principle of the utility model are as follows:

[0025] The tool handle 1 is directly locked in the tool holder 9 by the locking block 2, and is positioned and clamped on the tool holder 9 by the arc-shaped inclined surface 8; the magnitude of the locking force is adjusted by the compression spring 3 and the grinding washer 4, so that the locking force reaches a working state in which the tool can be changed and the tool is fixed; the locking block 2 and the push rod 5 are fixedly connected by the mounting pin 7. Since they are connected by the mounting pin, there is no connection gap, and there is no reverse gap when the push rod 5 is extended and retracted, thus ensuring stable and accurate motion transmission; the arc-shaped inclined surface of the locking block 2 is consistent with the inclined surface angle in the inner cavity of the tool handle 1, and the contact arc-shaped inclined surface position is hardened to increase hardness and wear resistance; all pin surfaces are hardened to increase their positioning or sliding stability and wear resistance.

[0026] The tool holder 9 is connected to the left and right supports 11 via a rotating sleeve 16. An adjusting bolt 13 is screwed onto the supports 11. A support follower 12 is mounted on the tool holder 9. A swing roller 14 is mounted on a connecting base 15, which is fixedly connected to the tool holder 9. The supports 11 are fixed to the cutterhead via screws and pins. The tool holder 9 rotates around the supports 11 via the rotating sleeve 16 to determine the tool change position. The angular limit of the tool holder 9's rotation around the supports 11 via the rotating sleeve 16 is determined by adjusting the adjusting bolt 13 and the support follower 12. The screwing length of the adjusting bolt 13 is adjusted to rotate the tool holder 9 to the desired angle. Screws and pins connect the base 15 to the tool holder 9, the support 11 to the turntable, and the support follower 12 to the tool holder 9. The swing roller 14, typically driven by a pneumatic cylinder, is the power source for rotating the tool holder 9 around the two supports 11. The cylinder drives the swing roller 14 to oscillate, with the swing stroke adjusted by the support follower 12 and the adjusting bolt 13. Adjacent rotating or sliding parts are each equipped with a self-lubricating sleeve, offering excellent wear resistance and extremely low friction. This is a conventional structure for existing machine tool tool holders and will not be described in detail.

[0027] A grinding wheel or other machining tool is clamped onto a universal toolholder 1. When locking the toolholder 1, it is inserted into the toolholder 9. The arc-shaped slope of the locking block 2 presses against the inner end face of the toolholder 1 to lock and position it. The compression spring 3 pushes the grinding washer 4, which drives the locking block 2 to compress the toolholder 1. The grinding washer 4 adjusts the compression spring force and the locking force, and evenly transmits the compression spring force to the locking block 2. The guide pin 10 guides the locking block 2 axially. The locking force is determined by the compression spring 3 and the push of the grinding washer 4. The toolholder 1 is fixed and positioned in the toolholder 9. When releasing the tool, an external cylinder pushes the ejector pin 5. The mounting pin 7 inside the ejector pin 5 drives the locking block 2 axially, releasing the toolholder 1 and preparing for tool arm extraction and tool changing.

Claims

1. A tool sheath device for a heavy-duty tool, comprising a tool handle (1), a tool seat (9), a support follower (12), an adjusting bolt (13), a swing roller (14), a connecting base (15) and a rotating shaft sleeve (16), characterized in that The upper end of the shank (1) is locked in the knife seat (9) by a locking block (2). The locking block (2) is provided with an arc-shaped inclined surface. The inner end surface of the shank (1) is in contact with the arc-shaped inclined surface of the locking block (2). A shaft sleeve (6) is fixedly installed on both sides of the middle of the knife seat (9). The push rod (5) passes through the locking block (2) and is inserted into the shaft sleeve (6). The locking block (2) and the push rod (5) are fixedly connected by a mounting pin (7). The inner end sleeve of the push rod (5) is provided with a compression spring (3). A grinding washer (4) is provided between the compression spring (3) and the locking block (2). The grinding washer (4) is also sleeved on the outer axial surface of the push rod (5).

2. A knife sheath device for heavy-duty knives according to claim 1, characterized in that A guide pin (10) is inserted transversely into the upper portion of the locking block (2), and both ends of the guide pin (10) are fixedly connected to the knife seat (9).

3. A knife sheath device for heavy-duty knives according to claim 2, characterized in that The guide pin (10) is arranged above the push rod (5) and is arranged parallel to the push rod (5).

4. A knife sheath device for heavy-duty knives according to claim 1 or 2, characterized in that The locking block (2) is a special-shaped metal body structure with two through holes, the upper through hole is inserted into the guide pin (10), and the lower through hole is inserted into the push rod (5). The outer side of the upper part of the special-shaped metal body is an upward inclined surface structure, which matches the inner end face of the tool holder (9). The outer side of the lower part of the special-shaped metal body is an inwardly concave arc groove, and the lower end face of the arc groove is a downwardly inclined arc slope (8), which matches the inner end face slope of the tool handle (1). The arc slope (8) is the contact matching surface for locking the tool.

5. A knife sheath device for heavy-duty knives according to claim 4, characterized in that The locking block (2) is fixedly connected to the top rod (5) via a mounting pin (7).

6. A knife sheath device for heavy-duty knives according to claim 1 or 2, characterized in that The knife seat (9) is provided with an exhaust hole to facilitate the insertion and removal of the knife handle (1).

7. A knife sheath device for heavy-duty knives according to claim 6, characterized in that The knife seat (9) is provided with a positioning pin to locate the radial position of the knife handle.

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