Range-extending tool rest of center-sliding lathe

Abstract

The utility model discloses a range-extending tool rest of a center-moving lathe, which comprises a tool rest body matched with a gang tool rest. A cutter mounting square groove for mounting a square cutter bar is formed in the cutter rest body; and a high-pressure cutting oil integrated block mounting platform is arranged on the tool rest body. Through the application of the range-extending tool rest, guide-sleeve-free mode cutting can be implemented, and the actual material tailing is between 95 mm and 115 mm, so that one more workpiece can be manufactured for each bar, and compared with the original production mode, the range-extending tool rest has the advantages that raw materials are greatly saved, and the production requirement and the quality requirement are completely met at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of Swiss-type lathes, in particular to a tool holder with an extended range for Swiss-type lathes. Background Art

[0002] Swiss lathe is the full name of Swiss CNC lathe. It is a precision processing equipment that can perform various forms of cutting such as turning, drilling, boring, tapping and engraving on metal and other materials, thereby realizing complex integrated processing. It is mainly used for mass processing of precision hardware, shafts and other parts. In terms of processing efficiency and processing accuracy, it has made a qualitative leap compared to CNC lathes. Among them, according to the aspect ratio of the workpiece to be processed, it can be divided into two working modes: no guide sleeve mode and guide sleeve mode.

[0003] No guide sleeve mode: Due to the certain force or material bending during processing, if the cutting part of the tool tip is far away from the material clamping position, it will be difficult to achieve high-precision cutting technology. Therefore, under normal circumstances, the ratio of the extended length of the material to the material diameter (aspect ratio) during processing must be less than 4 (the smaller the better the processing stability), which is more suitable for short parts; since there is no guide sleeve in the middle, the tail of the raw material bar can be reduced to about 30mm in this mode (but it still needs to be longer than the total length of a single workpiece).

[0004] With guide sleeve mode: In order to process slender shaft workpieces (length-to-diameter ratio greater than 4), a mechanism that supports the raw material bar (i.e., guide sleeve) is installed between the chuck and the tool. The guide sleeve supports the material near the tool so that the tool tip is always cutting near the support point. Therefore, the bending of the material caused by the force generated during processing can be eliminated, thereby achieving high-precision processing. However, the material tail will be relatively long, about 200 mm.

[0005] As mentioned above, from the perspective of cost, the biggest difference between the guide sleeve-free mode and the guide sleeve-enabled mode is the length of the material tail. If conditions permit, it is more cost-effective to choose the guide sleeve-free mode.

[0006] In actual production using the center lathe, the inventor found that for the production of a worm shaft workpiece, the diameter of The total length is 109.5mm, use The bar material is processed by a 32-type processing equipment (i.e. the maximum allowable processing diameter is ) The center lathe used to be processed in the guide sleeve mode (the main reason is that the spindle length travel of the 32-type lathe is only 80mm in the guide sleeve-free mode, which is much smaller than the total length of the workpiece). Although this mode produces qualified products, it causes a large loss of raw materials due to the excessive length of the tail. In addition, since the spindle length travel is not enough in the guide sleeve-free mode, only the guide sleeve mode can be selected for processing. Therefore, the inventor proposes to use the guide sleeve-free mode, but at the same time solve the problem of tool vibration caused by the overhang being too long in the guide sleeve-free mode, which affects the production quality. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a tool holder with an extended range for a central lathe which can be used to reduce the loss of raw materials and meet the production and quality requirements.

[0008] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0009] A tool rest for a Swiss-type lathe with an extended range, comprising: a tool rest body, wherein the tool rest body is matched and installed with a tool rest;

[0010] The tool holder body is provided with a square tool mounting groove for mounting a square tool rod;

[0011] A high-pressure cutting oil integrated block mounting platform is arranged on the tool holder body.

[0012] Preferably, the contact surface where the tool holder body is connected to the tool row tool holder is a positioning wedge surface, which fits with the empty tool position surface of the tool row tool holder.

[0013] Preferably, the tool mounting square groove is provided on one side of the tool holder body.

[0014] Preferably, the high-pressure cutting oil integrated block mounting platform is opened on the other side of the tool holder body and is located on the upper part of the tool holder body.

[0015] Preferably, a high-pressure cutting oil integrated block locking screw hole is provided on the side surface of the high-pressure cutting oil integrated block mounting platform.

[0016] Preferably, the integrated block is installed on the high-pressure cutting oil integrated block installation platform and fixed through the locking screw holes of the high-pressure cutting oil integrated block.

[0017] Preferably, an oil injection hard pipe is led out from the integrated block, and its nozzle is adjusted so as to spray directly onto the knife tip on the square knife rod.

[0018] Preferably, a tool holder fastening countersunk hole for fixing the tool holder body to the tool row tool holder is provided on the tool holder body.

[0019] Preferably, a knife bar locking screw hole for fixing the square knife bar is provided on the knife holder body.

[0020] Preferably, the range-extending tool holder is made of spring steel.

[0021] The beneficial effects of the utility model are:

[0022] (1) The utility model provides an extended-range tool holder for a Swiss-type lathe. Through the application of the extended-range tool holder, guide sleeve-free cutting can be implemented, and the actual material tail is between 95 and 115 mm, so that each bar can make one more workpiece, which greatly saves raw materials compared to the original production method.

[0023] (2) The utility model provides an extended-range tool holder for a central lathe. A high-pressure cutting oil integrated block interface is designed on the extended-range tool holder. High-pressure cutting oil is sprayed during cutting, which makes cutting more efficient and has a better chip removal effect.

[0024] (3) The utility model provides an extended-range tool holder for a Swiss-type lathe. The material of the extended-range tool holder is made of high-quality spring steel, which has been tempered. The length and thickness are maximized without causing interference, so that the overall rigidity is good, the negative effects such as tool chattering are resolved, and the stability of production is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a tool holder with an extended stroke for a Swiss-type lathe according to the utility model;

[0026] Figure 2 The schematic diagram of the application of a tool holder with an extended range of a central lathe in production is shown;

[0027] The markings of the components in the accompanying drawings are as follows:

[0028] 1. Tool holder body; 2. Countersunk hole for fastening tool holder; 3. Screw hole for locking tool bar; 4. Square groove for tool installation; 5. Positioning wedge surface; 6. Installation platform for high-pressure cutting oil integrated block; 7. Locking screw hole for high-pressure cutting oil integrated block; 8. Square tool bar; 9. Tool holder; 10. Spindle; 11. Chuck; 12. Bar stock; 13. Workpiece. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] Example:

[0031] This embodiment introduces the structure of an extended-range tool post for a Swiss-type lathe.

[0032] like Figure 1 As shown, Figure 1 The utility model is a structural schematic diagram of a tool holder with an extended range for a Swiss-type lathe.

[0033] A tool rest for a Swiss-type lathe with an extended range comprises: a tool rest body 1, wherein the tool rest body 1 is matched and installed with a tool rest 9;

[0034] The tool holder body 1 is provided with a square tool mounting groove 4 for mounting a square tool rod 8;

[0035] The tool holder body 1 is provided with a high-pressure cutting oil integrated block mounting platform 6 .

[0036] Furthermore, the contact surface between the tool holder body 1 and the tool row tool holder 9 is a positioning wedge surface 5 , which fits with the empty tool position surface of the tool row tool holder 9 .

[0037] Furthermore, the tool mounting square groove 4 is provided on one side of the tool holder body 1 .

[0038] Furthermore, the high-pressure cutting oil integrated block mounting platform 6 is provided on the other side of the tool holder body 1 and is located on the upper part of the tool holder body 1 .

[0039] Furthermore, a high-pressure cutting oil integrated block locking screw hole 7 is provided on the side surface of the high-pressure cutting oil integrated block mounting platform 6 .

[0040] Furthermore, the integrated block is installed on the high-pressure cutting oil integrated block installation platform 6 and fixed through the locking screw holes 7 of the high-pressure cutting oil integrated block.

[0041] Furthermore, an oil injection hard pipe is led out from the integrated block, and its nozzle is adjusted so as to spray directly onto the knife tip on the square knife rod.

[0042] In this embodiment, a high-pressure cutting oil integrated block mounting platform is innovatively added. High rigidity combined with the spraying of high-pressure cutting oil during cutting can select faster cutting parameters and achieve better chip removal, allowing actual output to reach a higher efficiency level.

[0043] Furthermore, a tool holder fastening countersunk hole 2 for fixing the tool holder body 1 to the tool row tool holder 9 is provided on the tool holder body 1 .

[0044] Furthermore, a knife bar locking screw hole 3 for fixing the square knife bar is provided on the knife holder body 1 .

[0045] Furthermore, the extended-range tool holder is made of spring steel, which has been tempered, and the length and thickness are made as large as possible without causing interference, so that the overall rigidity is good, solving the negative effects such as tool vibration.

[0046] In this embodiment, the extended-range tool holder is designed and installed on the tool holder of the equipment, so that the cutting stroke of one clamping is increased by 40mm from the conventional 80mm, that is, 120mm (greater than the total length of the workpiece 109.5mm), meeting the stroke requirements for selecting the guide sleeve-free mode.

[0047] In this embodiment, the installation of the range-extending tool holder is briefly described:

[0048] (1) Leave a tool position empty on the tool rest 9 of the lathe, and then clean the tool position and its surroundings;

[0049] (2) placing the tool holder body 1 of the extended-range tool holder on the vacant tool position of the tool holder 9, and ensuring that its positioning wedge surface 5 fits in with the wedge surface of the vacant tool position;

[0050] (3) Put two bolts of appropriate specifications into the tool holder fastening countersunk holes 2 provided on the tool holder body 1, and tighten them one by one to ensure that the tool holder body 1 is firmly connected to the tool holder 9;

[0051] (4) Confirm the installation accuracy: Use the needle of the runout meter to touch the bottom of the tool mounting square slot 4, then select the manual mode on the equipment panel, select the corresponding axis, and turn the knob to move the extended-range tool holder up and down to confirm that the extended-range tool holder is not installed crookedly;

[0052] (5) Confirm that there is no interference: Select the manual mode on the equipment panel, select the manual crank of each axis, and observe whether the extended-range tool holder will collide with other parts of the equipment. If so, change the tool position or make other adjustments according to the specific situation to ensure no interference;

[0053] (6) Place the square knife bar 8 into the knife-mounting square groove 4, align the knife with the outer diameter of the material as the reference, then screw three bolts of appropriate specifications into the knife-locking screw holes 3, and tighten them one by one to fix the square knife bar 8;

[0054] (7) Install a suitable manifold on the high-pressure cutting oil manifold mounting platform 6, and then tighten a suitable bolt in the high-pressure cutting oil manifold locking screw hole 7 to lock the manifold;

[0055] (8) Lead out the oil spray pipe from the manifold and adjust it so that its nozzle sprays directly at the tool tip. Then tighten the pipe joint to fix the oil pipe. Spray high-pressure cutting oil during cutting to make cutting more efficient and chip removal better.

[0056] (9) After the installation is completed, the conventional machine adjustment, startup, and cutting processing steps will follow.

[0057] like Figure 2 As shown, Figure 2The schematic diagram of the application of a tool holder with an extended range of a central lathe in production is shown. When in use, the extended range tool holder is installed on an empty tool position of the tool holder 9, and the bar 12 is clamped and fixed on the spindle 10 by the chuck 11. After debugging, the workpiece 13 (that is, a worm shaft workpiece mentioned by the inventor in the background technology) is processed by cutting the bar 12.

[0058] The inventor applied the extended-range tool holder to actual production. Through statistics, it was found that a single piece of material could make 25 workpieces before improvement, and 26 workpieces after the application of the extended-range tool holder, which greatly improved the use value of raw materials and reduced the loss of raw materials. According to statistical calculations of the cost savings, a single piece of material weighs 17.6 kg and the unit price is 17.4 yuan / kg, so its price is 306.24 yuan, and the material cost can be saved by 306.24 / 25-306.24 / 26=12.2496-11.7785=0.4711 yuan. Based on an annual output of 500,000 pieces, 0.4711x500000=235,500 yuan can be saved each year. The application of the extended-range tool holder greatly saves raw materials and raw material costs. Statistics also show that the production rhythm and efficiency are very impressive; in terms of quality, because the mode without guide sleeves is less affected by the outer diameter of the raw material bar, the fluctuation of the workpiece's runout is smaller than that with guide sleeves, and the product quality is stable, which fully meets the actual production needs.

[0059] In addition, because the overall equipment is not changed, only the guide sleeve mode is switched to the guide sleeve-free mode, and an extended-range tool holder is added to the tool holder, the cost of the equipment is not increased, and the difficulty of operation in production is not increased.

[0060] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tool holder for a Swiss-type lathe with an extended range, characterized in that: include: A tool holder body (1), wherein the tool holder body (1) is matched and installed with a tool row holder (9); The tool holder body (1) is provided with a square tool mounting groove (4) for mounting a square tool rod (8); A high-pressure cutting oil integrated block mounting platform (6) is provided on the tool holder body (1).

2. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The contact surface between the tool holder body (1) and the tool row tool holder (9) is a positioning wedge surface (5) which fits the empty tool position surface of the tool row tool holder (9).

3. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The tool mounting square groove (4) is arranged on one side of the tool holder body (1).

4. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The high-pressure cutting oil integrated block mounting platform (6) is provided on the other side of the tool holder body (1) and is located on the upper part of the tool holder body (1).

5. The extended-range tool rest of a Swiss-type lathe according to claim 1 or 4, characterized in that: A high-pressure cutting oil integrated block locking screw hole (7) is provided on the side surface of the high-pressure cutting oil integrated block mounting platform (6).

6. The tool rest for a Swiss-type lathe with an extended range according to claim 5, characterized in that: The integrated block is installed on the high-pressure cutting oil integrated block installation platform (6) and fixed via the locking screw hole (7) of the high-pressure cutting oil integrated block.

7. The tool rest for a Swiss-type lathe with an extended range according to claim 6, characterized in that: An oil injection hard pipe is led out from the integrated block, and its nozzle is adjusted so as to spray directly onto the tip of the square knife rod (8).

8. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The tool holder body (1) is provided with a tool holder fastening countersunk hole (2) for fixing the tool holder body (1) to the tool row tool holder (9).

9. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The tool holder body (1) is provided with a tool rod locking screw hole (3) for fixing the square tool rod (8).

10. The tool rest for a Swiss-type lathe with an extended range according to claim 1, characterized in that: The material of the range-extending tool holder is spring steel.

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