CN221734837U - Double-end edge machine clamp turning tool device - Google Patents

Abstract

The utility model relates to a machine-clamped turning tool device. In order to solve the problems of low processing efficiency, troublesome benchmark alignment and large size and roughness deviation in the existing bottom scraping processing of the inner bottom of the lower box body of the gear box, a double-edged machine-clamped turning tool device is provided, including a tool holder and a turning tool, one side of the tool holder is connected to a boring machine, and the other side is used to install the turning tool; the turning tool includes a tool rod, a tool head and a blade, the number of blades is two, the tool rod and the tool holder are vertically arranged, the tool head is detachably connected to the tool rod; the blade is detachably connected to the tool head. The utility model has the characteristics of high processing efficiency, simple benchmark alignment and small size and roughness deviation.

Description

Double-edged cutting tool clamp device

Technical Field

The utility model relates to a machine-clamped turning tool device, in particular to a double-end blade machine-clamped turning tool device.

Background Art

In order to prevent interference between the gear and the gearbox, the bottom of the inner cavity of the lower case of the gearbox needs to be scraped. Due to the interference between the tool bar and the inner cavity of the case, two welding turning tools are required for processing respectively. After the tool is replaced, the reference alignment needs to be re-performed, which not only reduces the processing efficiency, but also has a great impact on the size and roughness. Ordinary welding turning tools are prone to burning or breaking during use, causing the tool to be scrapped and increasing production costs. The cross-sectional area of the tool bar of ordinary welding turning tools is small, which is 22mm square. It is easy to vibrate during processing, which cannot meet the size requirements and often requires rework. It will also cause the roughness of the processed surface to fail to meet the requirements, and it must be manually polished before it can be delivered to customers. Therefore, improving the quality of the scraping bottom processing of the lower case of the gearbox, improving production efficiency, and reducing production costs has become an urgent problem to be solved.

Utility Model Content

The technical problem to be solved by the utility model is: in order to solve the problems of low processing efficiency, troublesome benchmark alignment and large size and roughness deviation in the existing gear box lower box inner cavity bottom scraping processing, a double-edged machine clamp turning tool device is provided.

The utility model adopts the following technical solution to solve the technical problem: a double-head asymmetric machine-clamped turning tool device, comprising a tool holder and a turning tool, one side of the tool holder is connected to a boring machine, and the other side is used to install the turning tool; the turning tool comprises a tool rod, a tool head and a blade, the number of blades is two, the tool rod and the tool holder are arranged perpendicular to each other, the tool head is detachably connected to the tool rod; the blade is detachably connected to the tool head.

Furthermore, the cutter head is provided with two countersunk holes, and the bolts are connected to the cutter rod through the countersunk holes; the blade is provided with a through hole, and the screws are connected to the cutter head through the through hole.

Furthermore, the cross section of the tool rod is a square, and the size of the cross section of the tool rod is (L/3)2, where L is the total length of the tool.

Furthermore, the center line of the tool head and the center line of the tool bar do not overlap. According to the configuration of the workpiece, the width of the machining interference area is a, and the offset distance is The length of the cutter head is L1mm, the width of the processing area is L2mm, and the length of the cutter is

The cutter head height H = r-R-Ksinα+5mm, r is the scraping bottom radius, R is the hole axis radius, and K is the slope width.

Furthermore, the center line of the cutter head is parallel to the center line of the cutter rod, and the left and right sides of the cutter head protrude from the cutter rod by a certain distance, and the protruding distance on one side of the cutter head is greater than the protruding distance on the other side.

Furthermore, the distance between the center line of the cutter head and the center line of the cutter rod is greater than 6.5mm, the right side of the cutter head protrudes from the cutter rod by greater than 2mm, and the left side of the cutter head protrudes from the cutter rod by 11mm; the length of the cutter head is ≤53mm, the width is ≤20mm, and the main body height is greater than 20mm.

Furthermore, the blade is rhombus-shaped, and the sharp angle portion of the blade is the cutting portion.

Furthermore, the blade thickness is 3-5 mm, and the diagonal lengths are ≤30 mm and ≥9.4 mm respectively.

Furthermore, after the blade and the cutter head are installed, the heights of the two blades are the same.

Furthermore, the two acute angles of the blade can be used interchangeably.

The beneficial effect of the utility model is that the double-ended blade machine-clamped turning tool device of the utility model has an increased cross-sectional area of the tool bar, which effectively eliminates the tool chattering phenomenon, improves the dimensional accuracy and surface roughness of the product, avoids labor waste and cost waste due to rework, and improves the physical quality of the product and reduces customer complaints. The setting of the double-ended blade avoids the tool changing process and the secondary reference alignment after the tool changing, which significantly improves the processing efficiency. A blade with strong interchangeability is used to replace the welded turning tool, and both ends of the diamond blade can be used, which not only shortens the downtime caused by tool damage or excessive wear, but also reduces material costs, and has a strong practical value.

In summary, the utility model has the characteristics of high processing efficiency, simple benchmark alignment and small size and roughness deviation.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described below in conjunction with the accompanying drawings and embodiments.

1 to 4 are schematic structural diagrams of the present utility model.

5 and 6 are cross-sectional views of the scraped bottom of the inner cavity of the lower case of the existing gear box.

FIG. 7 is a reference diagram for configuring a tool head and tool shank according to a workpiece to be processed.

In the figure: 1. tool holder, 2. tool rod, 3. tool head, 4. blade.

DETAILED DESCRIPTION

Now the utility model is further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

A double-edged cutting tool clamp device as shown in FIG. 1 to FIG. 7 comprises a tool holder 1 and a cutting tool. One side of the tool holder 1 is connected to a boring machine, and the other side is used for mounting the cutting tool.

The turning tool is divided into three parts: a tool bar 2, a tool head 3 and a blade 4. After installation, the tool bar 2 and the tool holder 1 are in a vertical or cross shape. The cross-sectional side length of the tool bar 2 is a square of 2 to 3 times the diameter of the tool head, that is, the cross-sectional size of the tool bar 2 is (L/3)2, where L is the total length of the tool. The increase in the cross-sectional area of the tool bar 2 effectively increases the rigidity of the tool, effectively eliminates the tool vibration phenomenon during machining, greatly improves the stability of the turning tool, significantly improves the dimensional accuracy of the scraped bottom surface, avoids machining rework and manual polishing, and significantly improves the appearance quality of the scraped bottom surface. The flatness of the scraped bottom surface is improved from Ra6.3 to close to Ra3.2.

There are two countersunk holes on the cutter head 3, which are fixedly connected to the cutter bar 2 by bolt countersunk holes. In order to facilitate the processing of the negative angle part of the inner cavity wheel side, the center line of the cutter head 3 does not coincide with the center line of the cutter bar 2 (parallel), and the distance between the center line of the cutter head 3 and the center line of the cutter bar 2 is ≮6.5mm. The right side of the cutter head protrudes from the cutter bar by more than 2mm, and the left side of the cutter head protrudes from the cutter bar. The empirical data should be more than 10mm, preferably 11mm; at the same time, the length of the cutter head is ≤53mm, the width is ≤20mm, and the main body height is more than 20mm; taking Figure 7 as an example, the center line of the cutter head 3 does not coincide with the center line of the cutter bar 2. According to the configuration of the workpiece, the width of the processing interference area is a, then the offset distance is The length of the tool head is L1mm, the width of the processing area is L2mm, and the tool length is The cutter head height H = rR-Ksinα+5mm, r is the scraping bottom radius, R is the hole axis radius, and K is the slope width.

The blade 4 is rhombus-shaped, and the sharp angle part of the blade is the cutting part. The thickness of the blade 4 is 3-5mm, and the diagonal lengths are ≤30mm and ≥9.4mm respectively. After the blade 4 and the cutter head 3 are installed, the two blades have the same height. A through hole is opened on the blade 4, and the blade 4 and the cutter head 3 are connected by screws, which is convenient for installation and replacement and has good interchangeability; there are two blades 4, which are optional CNC machine clamps. The specific size can be changed according to the blade installation position structure; after the blade 4 and the cutter head 3 are installed, the two blades 4 have the same height, and the two cutting edges of the blade 4 can be used to process the workpiece. When one side is worn out, the blade 4 can be rotated 180° and the other cutting edge can be used to continue processing; the main deflection angle of the blade 4 after installation is ≈180°.

Example: When performing bottom scraping on a gearbox (including negative angle areas)

The inner scraping bottom processing surface is an arc groove with a radial dimension of R315mm and an axial width of 115mm. The radial dimension of the box blank is R312mm. Due to the width limitation of the box structure, the use of conventional tools will interfere with the opening position in the wheel side shaft hole. The use of this tool can avoid interference and complete the processing in one go.

Step 1: Assemble the turning tool, fix the tool bar through the tool holder slot and locking screw, place the right turning tool close to the boring machine, and the left turning tool close to the workpiece, and the installation is completed.

Step 2: After locating the center of the shaft hole, use the inner diameter and end face of the shaft hole to calibrate the radial diameter and axial displacement respectively. After calibrating, process from the right side to the left side of the workpiece. f is 0.26mm/r, the spindle speed is 185 rpm, the feed speed is calculated as Vf=n·fz·z, n is the tool or workpiece speed, fz is the feed per tooth, z is the number of teeth, that is, Vf=48.1mm/min, and the axial movement is the axial width minus the length of the cutter head, that is, 115-53=62mm. The main deflection angle of the tool is close to 90°, and the theoretical cutting depth is (R315-R312), that is, 3mm, which can be processed in 2-3 cuts.

Due to the two blades 4, the processing area with a total length of 115 mm can be processed at one time without changing the tool direction, avoiding multiple tool adjustments, improving processing efficiency, and avoiding secondary tool connection, thereby improving surface quality.

The above description only describes the specific implementation methods of the utility model. Various examples do not limit the essential content of the utility model. Ordinary technicians in the relevant technical field can modify or deform the specific implementation methods described above after reading the description without departing from the essence and scope of the utility model.

Claims (10)

1. A double-edged machine-clamped turning tool device, comprising a tool holder and a turning tool, wherein one side of the tool holder is connected to a boring machine, and the other side is used to mount the turning tool; the characteristic is that the turning tool comprises a tool bar, a tool head and a blade, the number of blades is two, the tool bar and the tool holder are arranged perpendicular to each other, the tool head is detachably connected to the tool bar; the blade is detachably connected to the tool head. 2. The double-edged machine tool clamp device as described in claim 1 is characterized in that: two countersunk holes are formed on the tool head, and the bolts are connected to the tool rod through the countersunk holes; a through hole is formed on the blade, and the screw connects the blade to the tool head through the through hole. 3. The double-edged machine tool clamp device as described in claim 1 is characterized in that the cross section of the tool rod is square, the size of the cross section of the tool rod is (L/3)2, and L is the total length of the tool. 4. The double-edged cutting tool clamp device according to claim 1, characterized in that the center line of the cutting head and the center line of the cutting rod do not overlap, the width of the machining interference area is a, and the offset distance is (a+ The length of the cutter head is L1mm, the width of the processing area is L2mm, and the length of the cutter is The cutter head height H = r-R-Ksinα+5mm, r is the scraping bottom radius, R is the hole axis radius, and K is the slope width. 5. The double-edged machine tool clamp device as described in claim 4 is characterized in that the center line of the tool head is parallel to the center line of the tool rod, the left and right sides of the tool head protrude a certain distance from the tool rod, and the protruding distance on one side of the tool head is greater than the protruding distance on the other side. 6. The double-ended blade machine tool clamp device as described in claim 5 is characterized in that: the distance between the center line of the tool head and the center line of the tool rod is greater than 6.5mm, the right side of the tool head protrudes from the tool rod by greater than 2mm, and the left side of the tool head protrudes from the tool rod by 11mm; the length of the tool head is ≤53mm, the width is ≤20mm, and the main body height is greater than 20mm. 7. The double-edged blade machine-clamp turning tool device according to claim 1, characterized in that the blade is rhombus-shaped, and the acute angle part of the blade is the cutting part. 8. The double-edged blade machine tool clamp device according to claim 7, characterized in that the blade thickness is 3-5 mm, and the diagonal lengths are ≤30 mm and ≥9.4 mm respectively. 9. The double-edged blade machine tool clamp device according to claim 1, characterized in that after the blade and the cutter head are installed, the heights of the two blades are the same. 10. The double-edged blade machine-clamp turning tool device according to claim 7, characterized in that the two acute angles of the blade can be used interchangeably.