Clamp for finish machining of electric planer tool holder

Abstract

The clamp comprises a base, two clamping arms, an inclined ejector block and a power device, a lifting groove is formed in the top of the base, the two clamping arms are installed on the base and located on the left side and the right side of the lifting groove, and the inclined ejector block is arranged in the lifting groove in a sliding fit mode and matched with the lifting groove. The power device is located on the front side of the inclined ejector block, and the output end is connected with the inclined ejector block. When the clamp is matched with the tool apron in a clamping mode, the tool apron is not prone to slipping, so that stable positioning can be achieved, and it is guaranteed that the finish machining precision and quality of the upper end face and the lower end face are not affected negatively.

Description

Technical Field

[0001] The present invention relates to the technical field of fixtures, and more specifically, to a fixture for finish machining of an electric planer tool holder. Background Art

[0002] The tool holder is an important component of an electric planer. It is used for installing the tool to ensure that the tool can be firmly fixed on the electric planer. The tool holder realizes the lifting and rotating movements of the tool through the drive of the motor, which makes the quality of the tool holder directly affect the cutting efficiency and product quality of the electric planer.

[0003] Figure 1 The structure of the commonly used tool holder 7 on the electric planer is shown. More specifically, reference can be made to the description of the Chinese patent with the publication number CN201931503 and the patent name "Tool shaft assembly for electric planer". The upper and lower end faces of the electric planer tool holder 7 are flat, and the upper and lower end faces have tool mounting grooves 702 for installing the tool. The front and rear end faces have continuous notches 703 and protrusions 704 arranged along their length directions. The surfaces of the notches 703 and protrusions 704 are arc surfaces. Tool shafts 701 are provided on the two side surfaces of the tool holder 7, and the tool shafts 701 are used to connect with the motor.

[0004] The above-mentioned electric planer tool holder is formed by die casting. Its upper and lower end faces are milled into flat surfaces, and the tool mounting grooves are machined. During machining, it must be fixed by a fixture to ensure its stable position and posture during the machining process. At the same time, it is also necessary to prevent the upper and lower end faces from being blocked by obstacles, so as to ensure the machining accuracy and quality. In order to prevent the upper and lower end faces of the tool holder from being blocked, generally, its front and rear end faces or two side surfaces are selected as the positioning surfaces to cooperate with the fixture. However, when the front and rear end faces of the tool holder with arc-shaped notches and protrusions are used to cooperate with the fixture, the clamping force is easily concentrated on the arc-shaped surface of the protrusion, resulting in excessive local clamping force and insufficient clamping force in other areas, and affecting the friction between the fixture and the tool holder, thus easily causing slippage. When the two side surfaces of the tool holder are used to cooperate with the fixture, due to the existence of the tool shafts, there is also excessive local clamping force, making it difficult to effectively fix, thus affecting the positioning effect of the tool holder, as well as the machining accuracy and quality. Summary of the Invention

[0005] In view of the above situation, in order to overcome the problem that when the upper and lower end faces of the above-mentioned electric planer tool holder are finish machined after forming, the fixture needs to cooperate with its front and rear end faces or two side surfaces to clamp and fix the tool holder, resulting in too concentrated clamping force, affecting the friction with the tool holder, causing the tool holder to be unable to be effectively fixed and easily slipping, and ultimately affecting the machining accuracy and quality, the purpose of the present utility model is to provide a fixture that is not prone to slippage when clamping and cooperating with the tool holder, so that a stable positioning can be obtained, and the finish machining accuracy and quality of the upper and lower end faces are not negatively affected.

[0006] In order to achieve the above purpose, the technical solution of the present invention is:

[0007] A fixture for finish machining of an electric planer tool holder, which comprises a base, clamping arms, an inclined ejector block and a power device. A lifting groove is formed at the top of the base. The number of the clamping arms is two, and they are both installed on the base and located on the left and right sides of the lifting groove. The inclined ejector block is slidably fitted in the lifting groove and is in conformity with the lifting groove. The power device is located on the front side of the inclined ejector block, and its output end is connected to the inclined ejector block.

[0008] Preferably, a clamping groove is formed on the clamping arm.

[0009] Preferably, a guide groove is formed at the top of the clamping arm.

[0010] Preferably, a first mounting hole and a second mounting hole are formed on the inclined ejector block. The first mounting hole penetrates through the upper and lower end faces of the inclined ejector block. One end of the second mounting hole communicates with the first mounting hole, and the other end penetrates through the front end of the inclined ejector block. The output end of the power device is inserted into the second mounting hole, and a positioning rod is arranged on the output end of the power device and is inserted into the first mounting hole.

[0011] Preferably, the diameter of the second mounting hole is larger than the diameter of the output end of the power device.

[0012] Preferably, the power device is a cylinder or an oil cylinder.

[0013] Preferably, the power device is installed on a partition board, and its output end penetrates through the partition board and is connected to the inclined ejector block.

[0014] Preferably, threaded positioning holes are formed on the base.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] The two groups of clamping arms of the fixture of the present utility model are clamped and matched with the tool shafts on the two side faces of the tool holder through their respective clamping grooves, ensuring that the clamping force received by the tool holder is evenly distributed and keeping the tool holder balanced. The power device drives the inclined ejector block to move along the lifting groove of the base. When the height of the inclined ejector block rises, it will contact the lower end face of the tool holder and provide support for it to prevent it from falling. At the same time, it drives the tool holder to move upward, and the tool shaft will form a tight fit with the clamping groove of the clamping arm, realizing the stable positioning of the tool holder, effectively solving the problem that the tool holder is prone to slipping when the existing fixture is matched with the tool holder, providing a strong guarantee for the machining accuracy and quality of the upper and lower end faces of the tool holder. When the tool holder is fixed by the fixture of the present utility model, the clamping arms are located on the left and right sides of the fixed tool holder, and the inclined ejector block is located below the tool holder. At this time, the upper end face of the tool holder will be completely exposed in the machining vision, avoiding the occlusion of obstacles and enabling the milling machining of the upper end face and the machining of the tool mounting groove to be carried out smoothly. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the existing electric planer tool holder;

[0018] Figure 2 is the overall structural schematic diagram of the fixture of the present utility model;

[0019] Figure 3 is the exploded structural schematic diagram of the fixture of the present utility model;

[0020] Figure 4 is the cross-sectional structural schematic diagram of the fixture of the present utility model;

[0021] Figure 5 is the present utility model Figure 4 amplified structural schematic diagram of part A;

[0022] Figure 6 is the overall structural schematic diagram when the existing electric planer tool holder is clamped and cooperated with the fixture of the present utility model;

[0023] Figure 7 is the present utility model Figure 6 amplified structural schematic diagram of part B.

[0024] As shown in the figure:

[0025] 1. Base; 101. Lifting groove; 102. Threaded positioning hole; 2. Clamping arm; 201. Clamping groove; 201a. Lower groove body; 201b. Upper groove body; 202. Guide groove; 3. Oblique ejector block; 301. First mounting hole; 302. Second mounting hole; 4. Power device; 401. Output end; 5. Positioning rod; 6. Partition board; 7. Tool holder; 701. Tool shaft; 702. Tool mounting groove; 703. Notch; 704. Protrusion. Detailed implementation manners

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of simplified description, rather than indicating or implying that such orientation is a specific orientation that must be had and specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention.

[0028] Such as Figures 2 to 4 and Figure 6 and Figure 7As shown in the figure, the utility model relates to a fixture for finish machining of an electric planer tool holder, which comprises a base 1, clamping arms 2, an inclined ejector block 3 and a power device 4. The base 1 is installed on a machining platform for finish machining of the tool holder 7. A lifting groove 101 is formed at the top of the base 1, and the lifting groove 101 also penetrates through the front end of the base 1. The clamping arms 2 are installed on the base 1. There are two groups of clamping arms 2, and the two clamping arms 2 are respectively located on the left and right sides of the lifting groove 101. The tool shaft 701 of the tool holder 7 is clamped by the two clamping arms 2. In the clamped state, the tool holder 7 is kept above the lifting groove 101. The inclined ejector block 3 is slidably matched with the lifting groove 101. The inclined ejector block 3 can slide back and forth along the lifting groove 101, and the inclined ejector block 3 fits with the lifting groove 101. That is to say, the mating surface between the bottom of the inclined ejector block 3 and the bottom of the lifting groove 101 is an inclined surface. Therefore, when the inclined ejector block 3 slides along the lifting groove 101, its height will change. When the height of the inclined ejector block 3 rises, it will contact the lower end surface of the upper tool holder 7 and provide support for the tool holder 7, and push the tool holder 7 to move upward, ensuring that the tool shaft 701 can tightly abut against the clamping arms 2 to form a tight fit. When the height of the inclined ejector block 3 drops, the tool holder 7 will be released, so that the tool shaft 701 of the tool holder 7 can be removed from the clamping arms 2. The power device 4 is located on the front side of the inclined ejector block 3, and the output end 401 is connected to the inclined ejector block 3. The power device 4 provides power for the sliding of the inclined ejector block 3 along the lifting groove 101, ensuring that the inclined ejector block 3 can automatically move along the lifting groove 101. The two clamping arms 2 of the fixture of the utility model are clamped and matched with the tool shafts 701 on the two side surfaces of the tool holder 7, ensuring that the clamping force received by the tool holder 7 is evenly distributed and keeping the tool holder 7 balanced. The power device 4 drives the inclined ejector block 3 to move along the lifting groove 101 of the base 1. When the height of the inclined ejector block 3 rises, it will contact the lower end surface of the tool holder 7 and provide support for it to prevent it from falling, and at the same time drive the tool holder 7 to move upward. The tool shaft 701 will form a tight fit with the two clamping arms 2, realizing the stable positioning of the tool holder 7, effectively solving the problem that the tool holder 7 is prone to slip when cooperating with the existing fixture, and providing a strong guarantee for the machining accuracy and quality of the upper and lower end surfaces of the tool holder 7. When the tool holder 7 is fixed by the fixture of the utility model, the clamping arms 2 are located on the left and right sides of the fixed tool holder 7, and the inclined ejector block 3 is located below the tool holder 7. At this time, the upper end surface of the tool holder 7 will be completely exposed in the machining vision, avoiding the occlusion of obstacles, and enabling the milling machining of the upper end surface and the machining of the tool loading groove 702 to proceed smoothly.

[0029] Further, a clamping groove 201 is formed on the clamping arm 2. The clamping groove 201 is used for clamping and cooperating with the tool shaft 701 on the tool holder 7. In the clamped state, the tool holder 7 is kept above the lifting groove 101. When the height of the inclined ejector block 3 rises, it will contact the lower end surface of the upper tool holder 7 and provide support for the tool holder 7, and push the tool holder 7 to move upward, ensuring that the tool shaft 701 can tightly abut against the clamping groove 201 of the clamping arm 2 to form a tight fit.

[0030] As Figures 2 to 4and Figure 7 As shown, the clamping groove 201 is composed of two parts: a lower groove body 201a and an upper groove body 201b. The lower groove body 201a communicates with the front part of the clamping arm 2 to form an opening. Overall, the shape of the clamping groove 201 is L-shaped. The tool shaft 701 of the tool holder 7 is inserted into the clamping groove 201 through the opening where the lower groove body 201a communicates with the front part of the clamping arm 2, and can move along the lower groove body 201a into the upper groove body 201b to form a clamping fit. It should be noted that the setting of the upper groove body 201b makes the height of the clamping groove 201 greater than the diameter of the tool shaft 701, so that when the height of the inclined ejector block 3 decreases, the tool holder 7 can be released, and the tool holder 7 can fall into the lower groove body 201a to ensure that the tool shaft 701 can be removed from the opening of the lower groove body 201a and from the clamping arm 2. The top shape of the upper groove body 201b matches the shape of the tool shaft 701 of the tool holder 7, which enables the tool shaft 701 to rotate in the upper groove body 201b, thereby changing the orientation of the tool holder 7. After the upper end face of the tool holder 7 is finish-machined, the tool holder 7 can be rotated to synchronously finish-machine the lower end face, simplifying the complex process of removing the tool holder 7 and repositioning it after the upper end face is finish-machined, thereby improving the efficiency of the finish machining of the tool holder 7.

[0031] As Figures 2 to 4 and Figure 7 shown, a guide groove 202 is opened at the top of the clamping arm 2. The guide groove 202 communicates with the two side faces of the clamping arm 2. It is used to determine the movement path of the tool when machining the tool mounting groove 702 on the upper or lower end face of the tool holder 7 and guide the tool to pass through to ensure the smooth machining of the tool mounting groove 702. After the tool mounting groove 702 is machined, it remains in the same straight line as the guide groove 202.

[0032] As Figures 2 to 5 shown, the inclined ejector block 3 is provided with a first mounting hole 301 and a second mounting hole 302. The first mounting hole 301 communicates with the upper and lower end faces of the inclined ejector block 3. One end of the second mounting hole 302 is communicated with the first mounting hole 301, and the other end is communicated with the front end of the inclined ejector block 3. Overall, the first mounting hole 301 and the second mounting hole 302 form a T-shaped hole channel in the inclined ejector block 3. The output end 401 of the power device 4 is inserted into the second mounting hole 302, and a positioning rod 5 is provided on the output end 401 of the power device 4. The positioning rod 5 is inserted into the first mounting hole 301. When the power device 4 operates, the movement action of its output end 401 can be transmitted to the inclined ejector block 3 through the positioning rod 5, thereby pushing and pulling the inclined ejector block 3 to realize the synchronous automatic movement of the inclined ejector block 3.

[0033] As Figure 5As shown, the diameter of the second mounting hole 302 is larger than the diameter of the output end 401 of the power device 4, thereby allowing the output end 401 of the power device 4 to move up and down a certain distance in the second mounting hole 302 when the height of the angled ejector block 3 changes, avoiding interference to the reciprocating movement of the output end 401 of the power device 4 caused by the height change of the angled ejector block 3.

[0034] Furthermore, the power device 4 is a cylinder or an oil cylinder. Preferably, the power device 4 is a cylinder.

[0035] As Figures 2 to 4 and Figure 6 shown, the power device 4 is mounted on a partition 6, and its output end 401 penetrates through the partition 6 and is connected to the angled ejector block 3. The partition 6 provides a stable mounting position for the power device 4, ensuring the relative positions of the power device 4 and the angled ejector block 3 remain stable.

[0036] As Figure 2 、 Figure 3 and Figure 6 shown, threaded positioning holes 102 are provided on the base 1. The threaded positioning holes 102 are used to connect threaded fasteners. The base 1 is fixed on the processing platform through the threaded fasteners. The self-locking property of the threaded connection can firmly fix the base 1 on the processing platform, and at the same time, it is also easy to install and disassemble the base 1.

[0037] Combined with Figures 2 to 7 , when the tool setting seat 7 of the utility model fixture is positioned, first, the tool shafts 701 on the two sides of the tool setting seat 7 are buckled into the lower groove body 201a of the clamping groove 201 of the corresponding clamping arm 2 and moved along the lower groove body 201a to the upper groove body 201b, and clamped and cooperated with the upper groove body 201b. Then, the output end 401 of the power device 4 drives the positioning rod 5 to move. The positioning rod 5 transmits the movement to the angled ejector block 3, causing the angled ejector block 3 to move along the lifting groove 101 of the base 1 and increase its height. As the height increases, the angled ejector block 3 will contact the lower end surface of the tool setting seat 7 and provide support for it to prevent it from falling. At the same time, it drives the tool setting seat 7 to move upward, and the tool shaft 701 will form a tight fit with the upper groove body 201b, realizing the stable positioning of the tool setting seat 7. Finally, the upper end surface of the tool setting seat 7 can be milled and the tool mounting groove 702 can be processed. After the upper end surface is processed, the angled ejector block 3 is moved back to allow the tool shaft 701 to move and rotate to a certain extent. At this time, the tool setting seat 7 can be rotated to adjust its orientation in preparation for the finish machining of the lower end surface. After the machining is completed, the power device 4 drives the angled ejector block 3 to move back again. Since the height of the clamping groove 201 at the upper groove body 201b is larger than the diameter of the tool shaft 701, the tool setting seat 7 can be released at this time, causing the tool setting seat 7 to fall into the lower groove body 201a, ensuring that the tool shaft 701 can be removed from the clamping arm 2 through the opening of the lower groove body 201a, and correspondingly releasing the restriction of the fixture on the tool setting seat 7.

[0038] The above embodiments and descriptions in the specification only illustrate the principles and the best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A fixture for finish machining of an electric planer tool holder, characterized in that, It includes a base (1), clamping arms (2), a lifter block (3) and a power device (4). A lifting groove (101) is formed at the top of the base (1). The number of the clamping arms (2) is two, and they are both installed on the base (1) and located on the left and right sides of the lifting groove (101). The lifter block (3) is slidably fitted in the lifting groove (101) and is in conformity with the lifting groove (101). The power device (4) is located at the front side of the lifter block (3), and its output end (401) is connected to the lifter block (3).

2. The fixture for finish machining of an electric planer tool holder according to claim 1, characterized in that, A clamping groove (201) is formed on the clamping arm (2).

3. The fixture for fine machining of an electric planer tool holder according to claim 2, characterized in that, The clamping groove (201) includes a lower groove body (201a) and an upper groove body (201b). The lower groove body (201a) communicates with the front part of the clamping arm (2). The shape of the top of the upper groove body (201b) matches the shape of the tool shaft (701) of the tool holder (7).

4. A fixture for finish machining of an electric planer tool holder according to claim 3, characterized in that, A guide groove (202) is formed at the top of the clamping arm (2).

5. A fixture for finish machining of an electric planer tool holder according to any one of claims 1 to 4, characterized in that, A first mounting hole (301) and a second mounting hole (302) are formed on the lifter block (3). The first mounting hole (301) penetrates through the upper and lower end faces of the lifter block (3). One end of the second mounting hole (302) communicates with the first mounting hole (301), and the other end penetrates through the front end of the lifter block (3). The output end (401) of the power device (4) is inserted into the second mounting hole (302). A positioning rod (5) is provided on the output end (401) of the power device (4), and the positioning rod (5) is inserted into the first mounting hole (301).

6. The fixture for finish machining of an electric planer tool holder according to claim 5, wherein, The diameter of the second mounting hole (302) is larger than the diameter of the output end (401) of the power device (4).

7. A fixture for finish machining of an electric planer tool holder according to any one of claims 1, 2, 3, 4 or 6, characterized in that, The power device (4) is a cylinder or an oil cylinder.

8. A fixture for finish machining of an electric planer tool holder according to claim 7, characterized in that, The power device (4) is installed on a partition plate (6), and its output end (401) penetrates through the partition plate (6) and is connected to the lifter block (3).

9. A fixture for finish machining of an electric planer tool holder according to claim 8, characterized in that, Threaded positioning holes (102) are formed on the base (1).

Images