Inner hole turning tool

Abstract

The utility model belongs to the field of workpiece machining auxiliary tools, and particularly relates to an inner hole turning tool which comprises a tool handle, a tool bar, a cooling device and a damping device. By adjusting the rod on the sliding cutter handle, the adjusting rod pushes the cutter rod to rotate, so that the transverse distance of the cutter rod is changed, and the cutter rod can meet the cutting requirements of inner holes with different sizes; meanwhile, the vibration reduction device is arranged in the cutter handle, vibration of the device is converted into heat energy through the vibration reduction device, the heat energy is absorbed through the cooling device, and vibration reduction of the device is achieved; in addition, the cooling device sprays cold liquid to the blade arranged at the top end of the cutter bar, the temperature of the blade is reduced, and the service life of the blade is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of workpiece processing auxiliary tools, and specifically relates to an inner hole turning tool. Background Art

[0002] In the valve industry, the process requirements for valve mechanical products are very high. It is rare to have a product that satisfies customers in one-time molding during machining, especially the requirements on details are more stringent. Therefore, after the product size is machined, it needs to be subsequently ground, polished and rust-proofed to be fully qualified.

[0003] At present, for different valve component workpieces, corresponding tools need to be selected, and in the cutting process of the workpiece, corresponding turning tools must be used. However, the existing turning tools have the following problems: cooling is difficult (it is difficult for the coolant to reach the inside of the workpiece), resulting in the failure of cutting heat transfer and rapid tool wear; cutting is prone to vibration, which not only affects the quality of processing, but also easily causes damage to the turning tool, which is very dangerous; different types of turning tools need to be replaced for different inner hole diameters. Utility Model Content

[0004] The purpose of the utility model is to provide an inner hole turning tool to solve the problems existing in the prior art. To achieve the above invention purpose, the technical solution adopted by the utility model is:

[0005] An internal hole turning tool comprises a tool handle, a tool rod, a cooling device and a vibration damping device; the cooling device comprises a first cooling device and a second cooling device; the tool handle is provided with the vibration damping device and the first cooling device for absorbing vibration; the vibration damping device is provided with the first cooling device in the circumferential direction; the tool handle is rotatably connected to the tool rod near one end of the vibration damping device; the tool handle is slidably connected to an adjusting rod; the adjusting rod is slidably connected to the tool rod; the second cooling device is provided in the adjusting rod; the adjusting rod pushes the tool rod to rotate, thereby adjusting the lateral distance of the tool rod to adapt to internal holes of different apertures; the first cooling device is used to absorb the heat generated by the vibration damping device; the second cooling device is used to absorb the heat generated by the tool.

[0006] Furthermore, a semi-annular liquid inlet groove and liquid outlet groove are provided at one end of the knife handle, and an annular cavity connecting the liquid inlet groove and the liquid outlet groove is provided at the bottom of the liquid inlet groove and the liquid outlet groove; a cavity is provided at the other end of the knife handle, and the cavity is located in the annular cavity.

[0007] Furthermore, the vibration damping device is slidably provided in the cavity, and the vibration damping device includes a guide rod 1, a spring 1, a connecting rod and a ring. The spring 1 is arranged outside the guide rod 1, and the two ends of the spring 1 are respectively connected to the connecting rod and the cutter head. A plurality of the rings are arranged outside the connecting rod, and the rings are slidably connected to the inner wall of the cavity. The spring 1 and the guide rod 1 are connected to the connecting rod.

[0008] Furthermore, a cutter head is provided at one end of the tool handle close to the vibration damping device, a threaded through hole is provided on the cutter head, a threaded blind hole is provided at one end of the tool handle close to the vibration damping device, and a screw is threadedly connected between the threaded through hole and the threaded blind hole; a U-shaped frame is provided at one end of the tool head away from the tool handle, a fixed end of the tool rod is rotatably connected in the U-shaped frame, a slide groove is provided on the cutter head, and the adjusting rod is slidably connected in the slide groove.

[0009] Furthermore, a second slide groove is provided on one side of the shank along the length direction, the adjusting rod is slidably provided in the second slide groove, a clamping groove is provided on one side of the adjusting rod along the length direction, the clamping groove is connected to the side wall of the first slide groove, and a threaded through hole two is provided on the side wall of the first slide groove and connected to the clamping groove, and a screw two is provided in the second threaded through hole for clamping the adjusting rod.

[0010] Furthermore, a through groove is provided in the length direction of the knife rod, and two symmetrically arranged fixing plates are provided at one end of the adjusting rod, and three threaded through holes are symmetrically provided on the two fixing plates. The knife rod is provided between the two fixing plates, and a screw three passes through one of the threaded through holes three and then penetrates the through groove and is threadedly connected to the other threaded through hole three. The diameter of the screw three is adapted to the aperture of the through groove.

[0011] Furthermore, a groove is provided on one side of the two fixing plates close to each other, a gasket is provided in the groove, and the gasket is connected to the side wall of the knife rod.

[0012] Furthermore, an infusion channel is provided inside the adjusting rod along the length direction, an infusion tube is provided between the fixing plates, the infusion tube includes a steerable folding portion and a tube portion, the tube portion includes an outer ring portion and an inner ring portion, two ends of the folding portion are respectively connected to the infusion channel and the tube portion, the outer ring portion abuts against the bottom of the knife rod, the inner ring portion is connected to the elastic member, and the direction of the output end of the tube portion is parallel to the length direction of the knife rod.

[0013] Furthermore, the elastic member includes a second guide rod arranged at one end of the adjusting rod, the second guide rod is located between the two fixing plates, a second spring is arranged outside the second guide rod, and both ends of the second spring are connected to the inner ring portion and the adjusting rod.

[0014] Furthermore, a blade seat is provided at the movable end of the knife rod, and the blade seat is used to place a blade.

[0015] The utility model has the following beneficial effects:

[0016] 1. The adjusting rod and the tool rod cooperate with each other. Pushing the adjusting rod in the second slide groove to slide can drive the tool rod to rotate, thereby adjusting the lateral length of the tool rod to adapt to inner holes of different sizes, so that there is no need to replace the turning tool, and the purpose of adapting one turning tool to inner holes of multiple sizes is achieved.

[0017] 2. A vibration reduction device is provided in the tool handle, which converts the vibration generated when the device is working into heat energy. At the same time, a cooling device is provided in the tool handle to absorb heat energy, thereby achieving the purpose of vibration reduction, preventing excessive vibration from damaging the tool, or excessive vibration from affecting the turning accuracy of the inner hole, etc.

[0018] 3. An infusion tube is provided, and the output end of the infusion tube is always kept parallel to the knife rod 3, that is, it is always facing the blade. When the blade is working, the cold liquid can be accurately sprayed onto the blade to prevent the blade from overheating and extend the service life of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the whole device;

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 It is a stereogram of the adjustment rod;

[0022] Figure 4 It is a stereoscopic image of the knife handle;

[0023] Figure 5 It is the front view of the tool handle and the vibration reduction device;

[0024] Figure 6 yes Figure 5 Middle AA section view;

[0025] Figure 7 It is a stereoscopic diagram of an infusion tube. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] like Figure 1-7 As shown, an internal hole turning tool comprises a tool handle 1, a tool rod 3, a cooling device and a vibration damping device; the cooling device comprises a cooling device 1 and a cooling device 2, the tool handle 1 is provided with the vibration damping device and the cooling device 1 for absorbing vibration, the vibration damping device is provided with the cooling device 1 in the circumferential direction, the tool handle 1 is rotatably connected to the tool rod 3 near one end of the vibration damping device, the tool handle 1 is slidably connected to the adjusting rod 2, the adjusting rod 2 is slidably connected to the tool rod 3, and the cooling device 2 is provided in the adjusting rod 2; the adjusting rod 2 pushes the tool rod 3 to rotate, thereby adjusting the lateral distance of the tool rod 3 to adapt to internal holes of different apertures, the cooling device 1 is used to absorb the heat generated by the vibration damping device, and the cooling device 2 is used to absorb the heat generated by the tool.

[0029] Specifically, the knife bar 3 is rotated by sliding the adjustment rod 2 to adjust the lateral distance of the knife bar 3 to adapt to the inner holes of different sizes. The blade is fixedly set on the blade seat 302. When working, the blade generates heat and vibration; the output end of the outer ring part 403 of the infusion tube 4 is a straight tube (such as Figure 7 The straight tube portion abuts against the bottom of the knife bar 3 (as shown in the top of the tube portion). Figure 2 As shown) and is always parallel to the knife rod 3 (that is, the output end of the infusion tube 4 is parallel to the knife rod 3), the cold liquid is sprayed to the blade through the output end of the infusion tube 4 to absorb the generated heat. The vibration generated by the blade is transmitted to the vibration reduction device through the knife rod 3 and the knife head 5. The spring 602 converts the vibration into elastic potential energy and drives the connecting rod 801 to move on the axis of the cavity 105. The ring 802 sleeved on the connecting rod 801 generates heat by friction with the cavity 105, and converts the vibration transmitted thereto into heat energy. The cold liquid enters from the liquid inlet tank 102 and flows out of the liquid outlet tank 103 to cool the cavity 105. The input end of the liquid inlet tank 102 and the input end of the infusion channel 205 are both connected to the refrigeration system (not shown).

[0030] like Figure 4 , 5As shown in Figures 6 and 7, a semi-circular liquid inlet groove 102 and a liquid outlet groove 103 are provided at one end of the knife handle 1, and an annular cavity 107 connecting the liquid inlet groove 102 and the liquid outlet groove 103 is provided at the bottom of the liquid inlet groove 102 and the liquid outlet groove 103; a cavity 105 is provided at the other end of the knife handle 1, and the cavity 105 is located in the annular cavity 107. The liquid inlet groove 102 and the liquid outlet groove 103 should be coaxial with the cavity 105, and the outer wall of the cavity 105 should be as thin as possible or made of heat-conducting material to facilitate the heat dissipation of the cold liquid. It is more preferred that the cavity 105 and its outer wall part use independent heat-conducting components.

[0031] like Figure 1 , 6 As shown, the cavity 105 is slidably provided with the vibration damping device, which includes a guide rod 701, a spring 702, a connecting rod 801 and a collar 802. The guide rod 701 is provided with the spring 702 at its outer surface, and the two ends of the spring 702 are respectively connected to the connecting rod 801 and the cutter head 5. The connecting rod 801 is provided with a plurality of collars 802 at its outer surface, and the collars 802 are slidably connected to the inner wall of the cavity 105. The spring 702 and the guide rod 701 are connected to the connecting rod 801. The collar 802 and the connecting rod 801 are interference fit, or a ring groove adapted to the collar 802 is provided on the connecting rod 801. The collar 802 is made of a material with a large friction force, such as a rubber ring, etc. The cutter head 5 and the handle 1 are connected by a thread. The various components in the vibration damping device are detachable, and the collar 802 is a consumable part that can be detached and replaced.

[0032] like Figure 2 , 5 The end of the tool handle 1 close to the vibration reduction device is provided with a tool head 5, a threaded through hole 501 is provided on the tool head 5, and a threaded blind hole 106 is provided on the end of the tool handle 1 close to the vibration reduction device, and a screw is threadedly connected to the threaded through hole 501 and the threaded blind hole 106; the end of the tool head 5 away from the tool handle 1 is provided with a U-shaped frame 503, and the fixed end of the tool rod 3 can be rotatably connected in the U-shaped frame 503, and the tool head 5 is provided with a slide groove 502, and the adjustment rod 2 can be slidably connected in the slide groove 502. The U-shaped frame 503 and the slide groove 502 are respectively located on both sides of the top of the tool head 5, and the U-shaped frame 503 and the slide groove 502 should be in a straight line (such as Figure 2 as shown).

[0033] like Figure 5A second slide groove 104 is provided on one side of the knife handle 1 along the length direction, and the adjusting rod 2 is slidably provided in the second slide groove 104. A clamping groove 201 is provided on one side of the adjusting rod 2 along the length direction, and the clamping groove 201 is connected to the side wall of the first slide groove 502. A second threaded through hole 101 connected to the clamping groove 201 is provided on the side wall of the first slide groove 502. A second screw for clamping the adjusting rod 2 is provided in the second threaded through hole 101. When the adjusting rod 2 is clamped, the adjusting rod 2 is fixed in the second slide groove 104 and no longer slides. At this time, the lateral length of the knife rod 3 is also fixed. In addition, a scale can be set on the adjusting rod 2, and the starting point of the scale can be set at an appropriate position (for example, the junction of the tool handle 1 and the tool head 5, and then the scale is set in the length direction of the adjusting rod 2), wherein the length of the tool rod 3 is fixed, and the lateral length of the tool rod 3 (i.e., the inner hole radius) can be determined according to the scale, wherein the scale is optimally a non-uniform scale, and the scale is directly expressed as the lateral length of the tool rod 3 so as to directly read the inner hole radius satisfied at this time.

[0034] like Figure 3 As shown, the knife bar 3 is provided with a through slot 301 in the length direction, and the adjusting rod 2 is provided with two symmetrically arranged fixing plates 202 at one end, and the two fixing plates 202 are symmetrically provided with threaded through holes 3 203, and the knife bar 3 is provided between the two fixing plates 202. The screw 3 passes through one of the threaded through holes 3 203 and then penetrates the through slot 301 and is threadedly connected to the other threaded through hole 3 203, and the diameter of the screw 3 is adapted to the aperture of the through slot 301. A groove 204 is provided on the side where the two fixing plates 202 are close to each other, and a gasket 206 is provided in the groove 204, and the gasket 206 is connected to the side wall of the knife bar 3. When the adjusting rod 2 moves up and down, the screw 3 can slide in the length direction of the through slot 301, and the screw 3 can be tightened / loosened. When tightened, since the screw 3 is fixed to the knife bar 3 and the adjusting rod 2, the adjusting rod 2 can no longer move up and down. The gasket 206 is made of a material with greater friction, such as rubber, to increase the friction between the adjustment rod 2 and the knife rod 3 to prevent the two from sliding when the screw 3 is tightened.

[0035] In addition, an infusion channel 205 is provided along the length direction of the adjusting rod 2, and an infusion tube 4 is provided between the fixing plates 202. The infusion tube 4 includes a foldable portion 402 and a tube portion 401, and the tube portion 401 includes an outer ring portion 403 and an inner ring portion 404. The two ends of the folded portion 402 are connected to the infusion channel 205 and the tube portion 401 respectively. The outer ring portion 403 abuts against the bottom of the knife rod 3, and the inner ring portion 404 is connected to an elastic member. The output end direction of the tube portion 401 is parallel to the length direction of the knife rod 3. The elastic member includes a guide rod 2 601 arranged at one end of the adjusting rod 2, and the guide rod 2 601 is located between the two fixing plates 202. A spring 2 602 is provided outside the guide rod 2 601, and the two ends of the spring 2 602 connect the inner ring portion 404 and the adjusting rod 2. The spring 2 602 is in a compressed state and will push the infusion tube 4 to rotate outward to ensure that the infusion tube 4 abuts against the knife rod 3.

[0036] In addition, a blade seat 302 is provided at the movable end of the blade rod 3, and the blade seat 302 is used to place a blade.

[0037] Working principle: During operation, slide the adjusting rod 2 according to the size of the inner hole to be polished so that the lateral length of the knife rod 3 adapts to the size of the inner hole, then turn the screw 2 to abut the clamping groove 201 to fix the position of the adjusting rod 3, and tighten the screw 3 to fix the position of the adjusting rod 2 on the knife rod 3, then fix the blade on the blade seat 302, and then place the entire device in the inner hole to be polished. During operation, cold liquid is passed into the liquid inlet groove 102 and the infusion channel 205. The cold liquid passed into the liquid inlet groove 102 will come out through the liquid outlet groove 103, and can be circulated and cooled through the refrigeration device. The cold liquid passed into the infusion channel 205 will be directly sprayed onto the blade to directly cool the blade.

[0038] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An internal hole turning tool, characterized in that: The invention comprises a tool handle (1), a tool rod (3), a cooling device and a vibration damping device; the cooling device comprises a first cooling device and a second cooling device; the tool handle (1) is provided with the vibration damping device and the first cooling device for absorbing vibration; the first cooling device is provided on the circumference of the vibration damping device; the tool handle (1) is rotatably connected to the tool rod (3) at one end close to the vibration damping device; the tool handle (1) is slidably connected to an adjusting rod (2); the adjusting rod (2) is slidably connected to the tool rod (3); the second cooling device is provided in the adjusting rod (2); the adjusting rod (2) pushes the tool rod (3) to rotate, thereby adjusting the lateral distance of the tool rod (3) to adapt to inner holes of different diameters; the first cooling device is used to absorb heat generated by the vibration damping device; the second cooling device is used to absorb heat generated by the tool.

2. An internal turning tool according to claim 1, characterized in that: A semi-annular liquid inlet groove (102) and a liquid outlet groove (103) are provided at one end of the knife handle (1), and an annular cavity (107) communicating with the liquid inlet groove (102) and the liquid outlet groove (103) is provided at the bottom of the liquid inlet groove (102) and the liquid outlet groove (103); a cavity (105) is provided at the other end of the knife handle (1), and the cavity (105) is located in the annular cavity (107).

3. An internal turning tool according to claim 2, characterized in that: The vibration damping device is slidably provided in the cavity (105), and the vibration damping device comprises a guide rod (701), a spring (702), a connecting rod (801) and a collar (802); the guide rod (701) is provided with the spring (702) at its outer surface; two ends of the spring (702) are respectively connected to the connecting rod (801) and the cutter head (5); a plurality of collars (802) are provided at its outer surface; the collars (802) are slidably connected to the inner wall of the cavity (105); the spring (702) and the guide rod (701) are connected to the connecting rod (801).

4. The inner hole turning tool according to claim 1, characterized in that: A cutter head (5) is provided at one end of the tool handle (1) close to the vibration damping device, a threaded through hole (501) is provided on the cutter head (5), a threaded blind hole (106) is provided at one end of the tool handle (1) close to the vibration damping device, a screw (1) is threadedly connected to the threaded through hole (501) and the threaded blind hole (106); a U-shaped frame (503) is provided at one end of the tool head (5) away from the tool handle (1), a fixed end of the tool rod (3) is rotatably connected in the U-shaped frame (503), a slide groove (502) is provided on the cutter head (5), and the adjustment rod (2) is slidably connected in the slide groove (502).

5. An internal turning tool according to claim 4, characterized in that: A second slide groove (104) is provided on one side of the knife handle (1) along the length direction, and the adjusting rod (2) is slidably provided in the second slide groove (104). A clamping groove (201) is provided on one side of the adjusting rod (2) along the length direction, and the clamping groove (201) is connected to the side wall of the first slide groove (502). A second threaded through hole (101) connected to the clamping groove (201) is provided on the side wall of the first slide groove (502), and a second screw for clamping the adjusting rod (2) is provided in the second threaded through hole (101).

6. The inner hole turning tool according to claim 1, characterized in that: The knife rod (3) is provided with a through slot (301) in the length direction, and one end of the adjustment rod (2) is provided with two symmetrically arranged fixing plates (202), and the two fixing plates (202) are symmetrically provided with threaded through holes (203), and the knife rod (3) is arranged between the two fixing plates (202). After the screw (3) passes through one of the threaded through holes (203), it penetrates the through slot (301) and is threadedly connected to the other threaded through hole (203), and the diameter of the screw (3) is adapted to the hole diameter of the through slot (301).

7. An internal hole turning tool according to claim 6, characterized in that: A groove (204) is provided on one side of the two fixing plates (202) close to each other, a gasket (206) is provided in the groove (204), and the gasket (206) is connected to the side wall of the knife rod (3).

8. The inner hole turning tool according to claim 6, characterized in that: An infusion channel (205) is provided along the inner side of the adjusting rod (2) in the longitudinal direction, and an infusion tube (4) is provided between the fixing plates (202). The infusion tube (4) comprises a foldable portion (402) and a tube portion (401) that can be turned, and the tube portion (401) comprises an outer ring portion (403) and an inner ring portion (404). The two ends of the folded portion (402) are respectively connected to the infusion channel (205) and the tube portion (401), the outer ring portion (403) abuts against the bottom of the knife rod (3), and the inner ring portion (404) is connected to an elastic member. The output end of the tube portion (401) is parallel to the length direction of the knife rod (3).

9. An internal hole turning tool according to claim 8, characterized in that: The elastic member comprises a second guide rod (601) arranged at one end of the adjusting rod (2), the second guide rod (601) being located between the two fixing plates (202), a second spring (602) being arranged outside the second guide rod (601), and two ends of the second spring (602) being connected to the inner ring portion (404) and the adjusting rod (2).

10. The inner hole turning tool according to claim 1, characterized in that: The movable end of the knife rod (3) is provided with a blade seat (302), and the blade seat (302) is used to place a blade.

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