Wear-resistant numerical control cutter handle

Abstract

The utility model provides an anti-abrasion numerical control cutter handle, which relates to the technical field of numerical control cutter handles and comprises a cutter handle body, a cutter is mounted at the lower end of the cutter handle body, a connecting mechanism is mounted between the cutter handle body and the cutter and comprises a mounting groove, and the mounting groove is arranged at the lower end of the cutter handle body. And a connecting block is mounted in the mounting groove in a clamping manner. A bolt is replaced by the limiting groove and the limiting block to transmit vibration, so that the vibration is more uniformly transmitted to the cutter handle body, the stress concentration is avoided, the cutter handle body is better protected, and meanwhile, through the attachment between the limiting sleeve and the connecting block, the cutter handle body is prevented from being damaged, and the service life of the cutter handle body is prolonged. And the situation that in the cutting process, waste chips are splashed to the position between the cutter handle and the cutter to cause blockage and abrasion is avoided, and the overall anti-abrasion effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control tool holders, and more specifically, to a wear-resistant numerical control tool holder. Background Technique

[0002] The numerical control tool holder is a key component used to hold the tool in a numerical control machine tool, and it plays a crucial role in machining. When connecting the tool and the tool holder, the tool and the tool holder are first fitted together, and then tightened on the tool holder with bolts to achieve the installation of the tool. However, during the cutting process of the material, vibrations are often transmitted to the tool holder through the bolts. When the vibration distribution is uneven, stress concentration occurs at the contact surface between the bolt and the tool holder, which in turn causes wear and reduces the service life of the tool holder. Therefore, we propose a wear-resistant numerical control tool holder to solve the above problems. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a wear-resistant numerical control tool holder, which solves the problem that during the cutting process of the material, vibrations are often transmitted to the tool holder through the bolts. When the vibration distribution is uneven, stress concentration occurs at the contact surface between the bolt and the tool holder, which in turn causes wear and reduces the service life of the tool holder.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A wear-resistant numerical control tool holder includes a tool holder body. A tool is installed at the lower end of the tool holder body. A connection mechanism is installed between the tool holder body and the tool. The connection mechanism includes an installation groove, which is arranged at the lower end of the tool holder body. A connection block is snap-fitted inside the installation groove. The tool is installed at the lower end of the connection block. Four sides of the inside of the installation groove are respectively movably penetrated and installed with limit blocks. The mutually close ends of the limit blocks are respectively snap-fitted inside the connection block. A limit sleeve is movably sleeved outside the tool holder body. The limit sleeve is in contact with the limit blocks, and the lower surface of the limit sleeve is in contact with the connection block.

[0006] Preferably, movable grooves are respectively penetrated through four sides of the installation groove. Movable plates are respectively movably installed inside the movable grooves. The sides of the movable plates close to the connection block are respectively connected to the limit blocks. Limit grooves are respectively arranged on the sides of the connection block close to the movable plates. The limit blocks are respectively snap-fitted inside the limit grooves.

[0007] Preferably, guiding blocks are respectively installed at the lower ends of the sides of the movable plate away from the connecting block. A plurality of guiding grooves are respectively provided at the lower ends of the inner parts of the limiting sleeves, and the guiding grooves respectively correspond to the guiding blocks one by one. The inner wall of the limiting sleeve is attached to the movable plate, and the guiding blocks are respectively clamped and installed inside the guiding grooves.

[0008] Preferably, extension blocks are respectively installed at the upper ends of the movable plate. Fixed rods are respectively installed at the upper ends of the inner parts of the movable grooves, and the rod bodies of the fixed rods are respectively movably installed through the inner parts of the extension blocks. A torsion spring is installed between the fixed rod and the extension block. Baffles are respectively installed at the upper ends of the inner parts of the movable grooves and close to one side of the limiting sleeve.

[0009] Preferably, sealing blocks are respectively installed on the upper surfaces of the connecting blocks and close to one side of the guiding grooves, and the sealing blocks are respectively clamped and installed at the lower ends of the inner parts of the guiding grooves.

[0010] Preferably, an extension sleeve is installed at the upper end of the limiting sleeve. The extension sleeve is movably sleeved on the outer side of the tool holder body. Threaded holes are respectively provided on the front and rear sides of the extension sleeve and the tool holder body, bolts are respectively installed in the inner parts of the threaded holes through threads, sliding grooves are respectively provided at the front and rear ends on both sides of the tool holder body, and sliding blocks are respectively installed at the front and rear ends on both sides of the inner part of the extension sleeve. The sliding blocks are respectively clamped and installed inside the sliding grooves.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) In the utility model, the limiting groove and the limiting block are used to replace the bolt to transmit vibration, so that the vibration is transmitted to the tool holder body more evenly, avoiding the situation of stress concentration, better protecting the tool holder body. At the same time, through the fitting between the limiting sleeve and the connecting block, it also avoids the waste chips during the cutting process from splashing between the tool holder and the tool to cause blockage and wear, further improving the overall anti-wear effect.

[0013] (2) In the utility model, the sliding block and the sliding groove are used to assist the extension sleeve and the limiting sleeve to move up and down, realizing the positioning installation or disassembly of the connecting block, improving the installation or disassembly speed of the connecting block. At the same time, through the engagement between the guiding groove and the guiding block, the stability of the limiting block is further improved, enabling the limiting block to be stably clamped into the limiting groove for positioning and transmission, which is more convenient. Then, the sealing block is used to seal the lower end of the guiding groove to avoid waste chips from splashing into the guiding groove to cause scratches and other damages. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of a wear-resistant numerical control tool holder of the utility model;

[0015] Figure 2 The front view structural schematic diagram of a wear-resistant numerical control tool holder of the present utility model;

[0016] Figure 3 A wear-resistant numerical control tool holder of the present utility model Figure 2 The sectional structural schematic diagram at A-A in it;

[0017] Figure 4 A wear-resistant numerical control tool holder of the present utility model Figure 2 The sectional structural schematic diagram at B-B in it;

[0018] Figure 5 A wear-resistant numerical control tool holder of the present utility model Figure 3 The enlarged structural schematic diagram at C in it.

[0019] In the figure: 1. Tool holder body; 2. Connection mechanism; 201. Connection block; 202. Installation groove; 203. Limiting groove; 204. Movable groove; 205. Movable plate; 206. Limiting block; 207. Extension block; 208. Fixed rod; 209. Guide block; 210. Guide groove; 211. Sealing block; 212. Limiting sleeve; 213. Extension sleeve; 214. Bolt; 215. Threaded hole; 216. Slide block; 217. Slide groove; 218. Baffle; 3. Tool. Specific embodiments

[0020] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1 to 5 shown, an embodiment of the present utility model provides a wear-resistant numerical control tool holder, including a tool holder body 1. A tool 3 is installed at the lower end of the tool holder body 1. A connection mechanism 2 is installed between the tool holder body 1 and the tool 3. The connection mechanism 2 includes an installation groove 202. The installation groove 202 is arranged at the lower end of the tool holder body 1. A connection block 201 is snap-fitted and installed inside the installation groove 202. A tool 3 is installed at the lower end of the connection block 201. Four sides inside the installation groove 202 are respectively movably penetrated and installed with limiting blocks 206. The mutually close ends of the limiting blocks 206 are respectively snap-fitted and installed inside the connection block 201. A limiting sleeve 212 is movably sleeved and installed on the outer side of the tool holder body 1. The limiting sleeve 212 is in contact with the limiting blocks 206, and the lower surface of the limiting sleeve 212 is in contact with the connection block 201.

[0022] As Figures 3 to 5As shown in the figure, in another embodiment of the present utility model, movable slots 204 are respectively provided through the four sides of the installation slot 202. Movable plates 205 are respectively installed movably inside the movable slots 204. One sides of the movable plates 205 close to the connection block 201 are respectively connected to the limiting blocks 206. Limiting slots 203 are respectively provided on one sides of the connection block 201 close to the movable plates 205. The limiting blocks 206 are respectively installed in the limiting slots 203 in a snap-fit manner. Lower ends of one sides of the movable plates 205 away from the connection block 201 are respectively installed with guiding blocks 209. A plurality of guiding slots 210 are respectively provided at the lower ends inside the limiting sleeves 212, and the guiding slots 210 respectively correspond to the guiding blocks 209 one by one. The movable plates 205 are in fit with the inner walls of the limiting sleeves 212. The guiding blocks 209 are respectively installed in the guiding slots 210 in a snap-fit manner. Upper ends of the movable plates 205 are respectively installed with extending blocks 207. Fixed rods 208 are respectively installed at the upper ends inside the movable slots 204, and the rod bodies of the fixed rods 208 are respectively installed movably through the extending blocks 207. A torsion spring is installed between the fixed rods 208 and the extending blocks 207. Baffles 218 are respectively installed at the upper ends inside the movable slots 204 and close to the limiting sleeves 212. Sealing blocks 211 are respectively installed on the upper surfaces of the connection block 201 and close to the guiding slots 210. The sealing blocks 211 are respectively installed in the lower ends inside the guiding slots 210 in a snap-fit manner. An extending sleeve 213 is installed at the upper end of the limiting sleeve 212. The extending sleeve 213 is movably sleeved on the outside of the tool handle body 1. Threaded holes 215 are respectively provided on the front and rear sides of the extending sleeve 213 and the tool handle body 1. Bolts 214 are respectively installed in the threaded holes 215 through threads. Slide slots 217 are respectively provided at the front and rear ends on both sides of the tool handle body 1. Slide blocks 216 are respectively installed at the front and rear ends on both sides inside the extending sleeve 213. The slide blocks 216 are respectively installed in the slide slots 217 in a snap-fit manner.

[0023] When the tool 3 needs to be installed, the user drives the connecting block 201 of the tool 3 and inserts it into the inside of the installation groove 202. Then the user can control the limiting sleeve 212 to move downward. Then, as the limiting sleeve 212 moves, the limiting sleeve 212 will push the movable plate 205 to drive the extension block 207 to rotate around the fixed rod 208 as the axis, so that the movable plate 205 slowly drives the limiting block 206 to insert into the inside of the limiting groove 203. At the same time, the extension block 207 will cooperate with the fixed rod 208 to twist the torsion spring. Then, as the limiting sleeve 212 continues to move, the guiding block 209 will gradually be stuck into the inside of the guiding groove 210. Then, when the limiting sleeve 212 is attached to the lower surface of the connecting block 201, the guiding block 209 will also be completely stuck into the inside of the guiding groove 210 to assist in positioning the movable plate 205. At the same time, the movable plate 205 will also be in an upright state by pushing, so that the movable plate 205 drives the limiting block 206 to be completely stuck into the inside of the limiting groove 203. Then the user installs the bolt 214 through the threaded hole 215 to realize the positioning of the extension sleeve 213. Thus, when the tool holder body 1 drives the tool 3 to work, the tool 3 will be transmitted to the movable plate 205 through the limiting groove 203 and the limiting block 206. Then the movable plate 205 will be transmitted to the tool holder body 1 and the extension sleeve 213 respectively through the fixed rod 208 and the guiding block 209. Then the vibration entering the extension sleeve 213 can be transmitted to the tool holder body 1 again through the slider 216 and the bolt 214 to transmit the vibration in multiple directions, avoiding the situation that the tool holder body 1 is worn due to stress concentration, and better protecting the tool holder body 1;

[0024] The slider 216 and the chute 217 are used to assist the extension sleeve 213 and the limiting sleeve 212 to move, improving the stability and accuracy during their movement;

[0025] When the tool holder body 1 does not need to be connected to the tool 3, the torsion spring will control the extension block 207 to drive the movable plate 205 to rotate outwards, making the movable plate 205 in an inclined state. Thus, when the user controls the extension sleeve 213 to move downward later, the extension sleeve 213 can push the movable plate 205, so that the movable plate 205 can drive the limiting block 206 to engage with the limiting groove 203;

[0026] The baffle 218 is used to position the inclination angle of the movable plate 205, so that the movable plate 205 can only maintain an inclined state when rotating outwards, rather than rotating 90° to produce a vertical state, which is more convenient for the extension sleeve 213 to push the movable plate 205 to move;

[0027] The working principle of this anti-wear numerical control tool holder:

[0028] In use, when the tool 3 needs to be installed, the user first inserts the tool 3 driving the connecting block 201 into the interior of the installation groove 202. Then the user can control the limiting sleeve 212 to move downward. As the limiting sleeve 212 moves, the limiting sleeve 212 will push the movable plate 205 to drive the extension block 207 to rotate around the fixed rod 208, so that the movable plate 205 slowly drives the limiting block 206 to insert into the interior of the limiting groove 203. At the same time, the extension block 207 will cooperate with the fixed rod 208 to twist the torsion spring. Then, as the limiting sleeve 212 continues to move, the guiding block 209 will gradually engage into the interior of the guiding groove 210. When the limiting sleeve 212 is in contact with the lower surface of the connecting block 201, the guiding block 209 will also be completely engaged into the interior of the guiding groove 210 to assist in positioning the movable plate 205. At the same time, the movable plate 205 will also be in an upright state by being pushed, so that the movable plate 205 drives the limiting block 206 to be completely engaged into the interior of the limiting groove 203. Then the user installs the bolt 214 through the threaded hole 215 to achieve the positioning of the extension sleeve 213. Thus, when the tool holder body 1 drives the tool 3 to work, the tool 3 will transfer the force through the limiting groove 203 and the limiting block 206 to the movable plate 205. Then the movable plate 205 will transfer the force to the tool holder body 1 and the extension sleeve 213 through the fixed rod 208 and the guiding block 209 respectively. Then the vibration entering the extension sleeve 213 can be transferred to the tool holder body 1 again through the slider 216 and the bolt 214 to transfer the vibration in multiple directions, avoiding the situation that stress concentration causes wear of the tool holder body 1 and better protecting the tool holder body 1.

[0029] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, based on the above description, other different forms of changes or variations can be made. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A wear-resistant numerical control tool holder, comprising a tool holder body (1), characterized in that: A tool (3) is installed at the lower end of the tool shank body (1). A connecting mechanism (2) is installed between the tool shank body (1) and the tool (3). The connecting mechanism (2) includes an installation groove (202). The installation groove (202) is provided at the lower end of the tool shank body (1). A connecting block (201) is snap-fitted inside the installation groove (202). The tool (3) is installed at the lower end of the connecting block (201). Four sides inside the installation groove (202) are respectively movably penetrated and installed with limit blocks (206). The mutually approaching ends of the limit blocks (206) are respectively snap-fitted inside the connecting block (201). A limit sleeve (212) is movably sleeved outside the tool shank body (1). The limit sleeve (212) is in contact with the limit blocks (206). The lower surface of the limit sleeve (212) is in contact with the connecting block (201).

2. The anti-wear numerical control tool holder according to claim 1, wherein: Activity grooves (204) are respectively penetrated through four sides of the installation groove (202). Activity plates (205) are respectively movably installed inside the activity grooves (204). The sides of the activity plates (205) close to the connecting block (201) are respectively connected to the limit blocks (206). Limit grooves (203) are respectively provided on the sides of the connecting block (201) close to the activity plates (205). The limit blocks (206) are respectively snap-fitted inside the limit grooves (203).

3. The anti-wear CNC tool holder according to claim 2, characterized in that: Guide blocks (209) are respectively installed at the lower ends of the sides of the activity plates (205) away from the connecting block (201). A number of guide grooves (210) are respectively provided at the lower ends inside the limit sleeve (212), and the guide grooves (210) respectively correspond to the guide blocks (209). The activity plates (205) are in contact with the inner wall of the limit sleeve (212). The guide blocks (209) are respectively snap-fitted inside the guide grooves (210).

4. A wear-resistant numerical control tool holder according to claim 3, characterized in that: Extension blocks (207) are respectively installed at the upper ends of the activity plates (205). Fixed rods (208) are respectively installed at the upper ends inside the activity grooves (204), and the rod bodies of the fixed rods (208) are respectively movably penetrated through the extension blocks (207). A torsion spring is installed between the fixed rods (208) and the extension blocks (207). Baffles (218) are respectively installed at the upper ends inside the activity grooves (204) and close to the limit sleeve (212).

5. The anti-wear CNC tool holder according to claim 4, characterized in that: Sealing blocks (211) are respectively installed on the upper surfaces of the connecting block (201) and close to the guide grooves (210). The sealing blocks (211) are respectively snap-fitted inside the lower ends of the guide grooves (210).

6. The anti-wear CNC tool holder according to claim 4, characterized in that: An extension sleeve (213) is installed at the upper end of the limit sleeve (212). The extension sleeve (213) is movably sleeved and installed on the outside of the tool holder body (1). Threaded holes (215) are respectively provided on the front and rear sides of the extension sleeve (213) and the tool holder body (1). Bolts (214) are respectively installed inside the threaded holes (215) by means of threads. Chutes (217) are respectively provided at the front and rear ends on both sides of the tool holder body (1). Sliders (216) are respectively installed at the front and rear ends on both sides inside the extension sleeve (213). The sliders (216) are respectively snap-fitted and installed inside the chutes (217).

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