Broaching tool chuck structure of horizontal broaching machine

Abstract

The utility model discloses a broaching tool chuck structure of a horizontal broaching machine. The broaching tool chuck structure comprises a tool clamping body tool apron and a tool jacking block arranged on the tool clamping body tool apron, a tool chamber used for containing a broaching tool is arranged between the tool clamping body tool apron and the tool jacking block, a stop pin is arranged below the tool chamber and on the tool clamping body tool apron, and an adjusting piece used for fixing the broaching tool is arranged above the stop pin. The stop pin is in interference fit with the cutter holder of the cutter clamping body, and the adjusting piece is detachably connected with the top of the stop pin; the adjusting piece comprises an inner hexagon screw capable of adjusting the height of the adjusting piece and a hexagon nut used for fixing the inner hexagon screw. According to the utility model, the adjusting piece composed of the inner hexagon screw with adjustable height and the hexagon nut is arranged to replace a stop pin with a fixed size, so that the problem that the stop pin cannot be shared when parts and broaches with different specifications are replaced is solved, the universality of the stop pin is realized, frequent replacement of the stop pin is avoided, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal cutting and processing equipment, in particular to a broach chuck structure of a horizontal broaching machine. Background Art

[0002] A broaching machine is a machine tool widely used in metal cutting. When using a broaching machine to process keyways and other structures, a broaching chuck is required to fix and guide the broach. However, the existing broaching chuck structure has the following problems:

[0003] 1. When replacing processing parts and broaches of different specifications, the stop pins cannot be shared due to their different sizes. The stop pins need to be replaced frequently, which increases the auxiliary time and reduces the processing efficiency.

[0004] 2. In the traditional broach chuck structure, after the broaching process is completed, the broach will often warp up or droop inside the tool holder, resulting in poor processing accuracy and may also damage the surface of the processed part.

[0005] 3. It is impossible to effectively prevent and correct the upward and downward movement of the broach, and precision control is difficult.

[0006] Therefore, the broach chuck structure in the prior art has the above-mentioned deficiencies, and new technical solutions are urgently needed for improvement and optimization to improve the efficiency and accuracy of broaching machine processing. Utility Model Content

[0007] The technical problem to be solved by the utility model is: to solve the above-mentioned technical problems and to provide a broach chuck structure for a horizontal broaching machine which solves the problems in the prior art of being unable to share a stop pin and being unable to prevent the broach from warping up and sagging.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] A broach chuck structure for a horizontal broaching machine includes a tool holder and a top tool block arranged on the tool holder. A tool chamber for placing the broach is arranged between the tool holder and the top tool block. A clamping member for resisting the broach is arranged below the tool chamber and on the tool holder.

[0010] Preferably, the clamping stopper includes a stop pin and an adjusting member disposed above the stop pin for fixing the broach.

[0011] Preferably, the stop pin is interference fit with the knife seat of the knife body, and the adjusting member is detachably connected to the top of the stop pin.

[0012] Preferably, the adjusting member comprises a hexagon socket screw whose height can be adjusted and a hexagon nut for fixing the hexagon socket screw.

[0013] Preferably, the clamping member is a hydraulic buffer.

[0014] Preferably, the top knife block is mounted on the knife seat of the knife body by means of a top knife block mounting screw.

[0015] Preferably, the top cutter block is also provided with a plurality of screws for preventing the broach from tilting upward after the pin is pulled.

[0016] Preferably, a pair of clamping claws are provided on both sides of the entrance of the knife chamber.

[0017] The beneficial effects of the utility model include:

[0018] (1) The utility model is provided with an adjusting member composed of a hexagon socket screw and a hexagon nut with adjustable height, which replaces a fixed-size stop pin, solves the problem that the stop pin cannot be shared when replacing parts and broaches of different specifications, realizes the versatility of the stop pin, avoids frequent replacement of the stop pin, and improves processing efficiency.

[0019] (2) The utility model fixes the broach by adjusting the height of the hexagon socket screw, thereby effectively preventing the broach from sagging after broaching, ensuring processing accuracy and avoiding damage to the processed parts.

[0020] (3) The utility model provides a hexagonal screw on the top cutter block, which can be tightened and fixed when the broach is tilted up, thereby solving the technical problem of being unable to effectively prevent and correct the problem of the broach tilting up, and realizing the control of the shape and precision of the broach. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural cross-sectional view of a broach chuck structure of a horizontal broaching machine in Example 1;

[0022] Figure 2 It is a schematic diagram of the overall structure of a broach chuck structure of a horizontal broaching machine in Example 1;

[0023] Figure 3 This is a schematic diagram of the structure of the hydraulic buffer in Example 2.

[0024] The above-mentioned figure marks: 1. tool holder of the tool holder; 2. top tool block; 3. top tool block mounting screw; 4. tool chamber; 5. stop pin; 6. hexagon socket screw; 7. hexagon nut; 8. hexagon screw; 9. broach; 10. clamping claw. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and examples, but these specific implementation schemes do not limit the protection scope of the present invention in any way.

[0026] Example 1

[0027] like Figure 1-2As shown, a broach chuck structure of a horizontal broaching machine includes a tool holder 1 and a top tool block 2 arranged on the tool holder 1, a tool chamber 4 for placing the broach is provided between the tool holder 1 and the top tool block 2, a stop pin 5 is provided on the tool holder 1 below the tool chamber 4, and an adjusting member for fixing the broach is provided above the stop pin 5.

[0028] In this embodiment, the stop pin 5 is interference fit with the tool holder 1 of the clamping tool body, and the adjusting member includes a hexagon socket screw 6 that can adjust its own height and a hexagon nut 7 for fixing the hexagon socket screw 6. The use of the hexagon socket screw 6 with adjustable height replaces the function of the original fixed-size stop pin 5, realizes the versatility of the stop pin 5, avoids the need for frequent replacement of the stop pin 5, saves processing time and increases the applicability of the structure. In addition, a hexagon nut 7 is set above the hexagon socket screw 6. By adjusting the height of the hexagon socket screw 6, the broach can be effectively prevented from sagging after broaching, thereby ensuring processing accuracy.

[0029] The adjustment and fixation of the height of the hexagon socket screw 6 can be set according to the actual conditions of different broaches and parts, which effectively prevents and corrects the problems of broach warping and sagging, and ensures the control of processing accuracy.

[0030] In this embodiment, the top cutter block 2 is mounted on the cutter body seat 1 by means of the top cutter block mounting screws 3. A plurality of screws are also provided on the top cutter block 2. The screws are hexagonal screws 8, which are used to prevent the broach 9 from tilting upward after the pin is pulled. The hexagonal screws 8 and the hexagon socket screws 6 apply force to the broach placed in the knife chamber 4 to fix the broach 9 in the knife chamber 4.

[0031] In this embodiment, a pair of clamping jaws 10 are provided on both sides of the entrance of the knife chamber 4, which can clamp part of the broach 9, help limit the lateral and longitudinal displacement of the broach, and cooperate with the stop pin 5 and other components to achieve accurate positioning of the broach 9. The inner hole or groove formed by the clamping jaw 10 can provide initial guidance and sliding guidance for the broach, making the movement of the broach 9 smoother.

[0032] The working principle and method of a broach chuck structure of a horizontal broaching machine in this embodiment are:

[0033] First, the broach 9 is inserted into the knife chamber 4 , a clearance fit is formed between the bottom surface of the broach 9 and the stop pin 5 located below the knife chamber 4 , and the broach 9 rests on the clamping jaw 10 to achieve preliminary positioning of the broach 9 .

[0034] Secondly, adjust the height of the hexagon socket screw 6 so that the bottom of the hexagon socket screw 6 contacts the top surface of the stop pin 5. Tighten the hexagon nut 7 to fix the hexagon socket screw 6. At this time, the hexagon socket screw 6 and the stop pin 5 are locked and fixed up and down, completing the adjustment and fixation of the height position of the broach 9. Then, tighten the hexagon screw 8 on the top cutter block 2.

[0035] Then, start the broaching machine to perform broaching operation. The clearance between the stop pin 5 and the bottom surface of the broach 9 allows the broach 9 to slide back and forth. The hexagon socket screw 6 prevents the broach 9 from sagging during the broaching process. The clamp 10 plays a role in auxiliary positioning and guiding.

[0036] Finally, when the processing is completed, the broach 9 may be tilted upward due to the cutting force, but because the hexagonal screw 8 on the top tool block 2 has been tightened, the hexagonal screw 8 will block the upward movement of the broach 9, avoiding the influence of the deformation of the broach 9 itself on subsequent processing.

[0037] In summary, the technical effects that can be achieved by the broach chuck structure of a horizontal broaching machine in this embodiment are:

[0038] 1. An adjusting piece consisting of a hexagon socket screw and a hexagon nut with adjustable height is set to replace the fixed-size stop pin, solving the problem that the stop pin cannot be shared when replacing parts and broaches of different specifications, realizing the versatility of the stop pin, avoiding frequent replacement of the stop pin, and improving processing efficiency.

[0039] 2. The design of the hexagon socket screw and the hexagon nut can fix the broach by adjusting the height of the hexagon socket screw, effectively preventing the broach from sagging after broaching, ensuring the processing accuracy and avoiding damage to the processed parts.

[0040] 3. The hexagonal screw on the top cutter block can be tightened and fixed when the broach is tilted up, which solves the technical problem of being unable to effectively prevent and correct the problem of broach tilting up, and realizes the control of the shape and accuracy of the broach.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that the combined structure of the stop pin, the hexagonal nut and the hexagon socket screw is replaced as follows: Figure 3 The hydraulic buffer shown in the figure. The other structures have not changed, so they will not be elaborated here.

[0043] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may be subject to various changes and modifications, and these changes and modifications fall within the scope of the invention claimed for protection.

Claims

1. A broach chuck structure for a horizontal broaching machine, comprising a broach body and a tool holder and a top tool block arranged on the broach body and the tool holder, characterized in that: A tool chamber for placing the broach is provided between the tool holder of the tool clamping body and the top tool block, and a clamping member for supporting the broach is provided below the tool chamber and on the tool holder of the tool clamping body; the clamping member includes a stop pin and an adjusting member provided above the stop pin, which is used to fix the broach; the stop pin and the tool holder of the tool clamping body are interference fit, and the adjusting member is detachably connected to the top of the stop pin; the adjusting member includes a hexagon socket screw which can adjust its own height and a hexagonal nut for fixing the hexagon socket screw.

2. The broaching chuck structure of a horizontal broaching machine according to claim 1, characterized in that: The clamping member is a hydraulic buffer.

3. The broaching chuck structure of a horizontal broaching machine according to claim 1, characterized in that: The top knife block is mounted on the knife holder of the knife clamping body through the top knife block mounting screws.

4. The broaching chuck structure for a horizontal broaching machine according to claim 3, characterized in that: The top cutter block is also provided with a plurality of screw rods for preventing the broach from tilting upward after the pin is pulled.

5. The broaching chuck structure for a horizontal broaching machine according to any one of claims 1 to 4, characterized in that: A pair of clamping claws are also provided on both sides of the entrance of the knife chamber.

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