CN118595953A - An inner wall grinding device for automobile VVT drive valve processing - Google Patents

Abstract

The invention discloses inner wall polishing equipment for processing an automobile VVT driving valve, which relates to the technical field of automobile driving valve processing and comprises a bottom plate frame, wherein a long screw rod is rotatably arranged on the bottom plate frame and is hollow; the transmission mechanism is used for driving the long screw rod to do telescopic rotation on the baseplate frame in the front-back direction, and the transmission mechanism is provided with a polishing motor for providing driving force. The inner wall polishing equipment for machining the automobile VVT driving valve has the advantages of being simple in structure, simple to operate, high in polishing precision, capable of meeting the machining requirements of standard automobile VVT driving valves with different cavity diameters, capable of polishing the inner wall within the effective axial length range in a uniform precision mode in unit time, high in efficiency, high in consistency and capable of guaranteeing the quality consistency of each valve in mass production.

Description

An inner wall grinding device for automobile VVT drive valve processing

Technical Field

The invention relates to the technical field of automobile drive valve processing, in particular to an inner wall grinding device for automobile VVT drive valve processing.

Background Art

With the rapid development of the automobile industry, the continuous advancement of engine technology has become the key to improving automobile performance and fuel economy. Variable valve timing technology, as an important part of it, achieves higher combustion efficiency and power output by adjusting the time of valve opening and closing. VVT drive valve is one of the core components to realize this technology, and its precision and quality directly affect the performance and life of the engine. In the production process of VVT drive valve, the processing quality of the inner wall is one of the key factors to ensure the performance of the valve. The precision of the inner wall processing is directly related to the sealing of the valve and the smoothness of the air flow channel, thereby affecting the working efficiency of the engine. At present, for the processing of the inner wall of VVT drive valve, traditional mechanical processing methods such as turning and milling are mostly used, but these methods are difficult to ensure the smoothness and precision of the inner wall, and the efficiency is low. In order to improve the processing quality of the inner wall of VVT drive valve, inner wall grinding technology has been adopted in recent years. However, most of the existing inner wall grinding equipment has the problems of complex structure, cumbersome operation, and insufficient grinding precision, which is difficult to meet the high standard processing requirements. At the same time, the traditional manual grinding method is not only inefficient, but also has poor consistency, and cannot ensure the quality consistency of each valve in mass production.

Summary of the invention

In order to solve the above technical problems, the present invention is implemented through the following technical solutions: An inner wall grinding device for processing an automobile VVT drive valve comprises a bottom plate frame, on which a long lead screw is rotatably mounted, and the long lead screw is hollow;

The transmission mechanism is used to drive the long lead screw to perform telescopic rotation in the front-rear direction on the bottom frame. The transmission mechanism has a grinding motor that provides driving force, and a pump installed on the left side of the transmission mechanism. The pump and the transmission mechanism are installed on both sides of the long lead screw, respectively. The transmission mechanism is rotatably installed with the bottom frame through the grinding motor. The grinding motor is installed on the top of the bottom frame and close to the transmission mechanism. The pump is installed on the left end of the bottom frame.

A grinding piece, used for grinding the inner wall of a VVT driving valve of an automobile, the grinding piece having a long sleeve for guiding dust, and a support installed below the grinding piece, the long sleeve being fixedly connected to the support, and the long sleeve being connected to a pump;

Among them, the end of the long screw rod away from the grinding motor is fixedly connected with a long sleeve rod, the surface of the long sleeve rod and the end away from the grinding motor is sleeved with a thick sleeve rod, the surface of the thick sleeve rod and the end away from the grinding motor is connected with a short tube head, the short tube head is connected to the inner cavity of the long sleeve rod, the surface of the thick sleeve rod and the end away from the grinding motor is installed with a grinding body, and the grinding body is used to extend and grind the inner wall of the automobile VVT drive valve.

Preferably, a straight rod is installed in the inner cavity of the long sleeve rod, a short head rod is installed at the end of the straight rod away from the grinding motor, a joint rod is threadedly connected to the end of the short head rod away from the straight rod, a locking rod is inserted inside the joint rod, a tooth window is opened through the surface of the long sleeve rod, and the tooth window is connected to the inner cavity of the long sleeve rod, and a sleeve cavity is left between the long sleeve rod and the thick sleeve rod.

Preferably, the end of the short tube head away from the thick sleeve rod is connected to a corrugated rubber tube, a first spring is installed around the corrugated rubber tube, and one end of the first spring is connected to the short tube head, the other end of the first spring is connected to a bucket piece, and the bucket piece is elastically installed with the short tube head through the first spring, the grinding body is oblate as a whole, and a bending portion is installed in the middle of the surface of the grinding body, the bending portion can be bent and deformed, and a second spring is connected to the middle position inside the grinding body, and the second spring is used to rebound the deformed bending portion to its initial shape.

Preferably, a bead rod is connected between the straight rod and the short head rod, and the bead rod is slidably installed with the bucket piece through a short tube head, a corrugated rubber tube and a first spring. A column is fixedly connected to the surface of the straight rod and one end away from the bead rod. A gear head is installed in the middle of the top of the column, and the gear head is elastically connected to the column. The gear head is meshed with the long sleeve rod through a tooth window.

Preferably, one end of the straight rod away from the bead rod is connected to a third spring, and one end of the third spring away from the straight rod is connected to the inner wall of the long sleeve rod, and the straight rod is elastically mounted with the long sleeve rod through the third spring.

Preferably, a fourth spring is connected to the middle of the inner side of the joint rod and one end close to the short head rod, two pairs of spring tongues are installed in a centrally symmetrical shape inside the joint rod, and the spring tongues are installed on the surface of the joint rod to be elastic and telescopic.

Preferably, a pair of latch teeth are fixedly installed at one end of the locking rod close to the fourth spring, a notch is left between the latch teeth, the spring tongue is locked and installed with the locking rod through the latch teeth, the notch corresponds to the spring tongue, the locking rod is installed with the joint rod pin through the latch teeth, the spring tongue and the fourth spring, and the joint rod is installed with the grinding body pin through the spring tongue and the locking rod.

Preferably, the transmission mechanism includes a turntable rotatably mounted on the top of the base frame, a pair of arms are centrally symmetrically mounted on one side of the turntable facing away from the grinding motor, a kit is mounted on one end of the arm close to the lead screw, the kit is threadedly mounted on the lead screw, and the arm and the kit are rotatably mounted.

Preferably, a collar is embedded and installed on the inner side of the long sleeve, the long sleeve is slidably installed with the long sleeve rod through the collar, the long sleeve is slidably installed with the thick sleeve rod through the collar, a guide cavity is opened around the inner side of the long sleeve, and the guide cavity is connected with the pump through the long sleeve.

Preferably, the grinding piece includes a pair of grinding discs, which are sleeved on the coarse sleeve rod and away from one end of the long sleeve rod, and hoop rings are symmetrically installed on both sides of the grinding discs, and the hoop rings are installed with grinding disc bolts, and the hoop rings are installed with coarse sleeve rod bolts. Air holes are opened on the surface of the grinding disc, and through holes are opened inside the grinding disc that penetrate the coarse sleeve rod, and the air holes are connected with the sleeve cavity through the through holes.

The present invention provides an inner wall grinding device for machining an automobile VVT drive valve, which has the following beneficial effects:

1. The inner wall grinding equipment for automobile VVT drive valve processing can realize adaptive grinding of the inner walls of automobile VVT drive valves of various different inner diameter models, and can also expand the effective movable distance of the grinding body away from the short pipe head by releasing the connecting ball rod for a certain distance in advance, so as to adapt to the working condition that the inner cavity of some automobile VVT drive valves has a local diameter expansion, and can adaptively grind this special variable diameter inner cavity, thereby expanding the use conditions of the grinding equipment, improving the types of automobile VVT drive valves that the grinding equipment can correspond to, and improving the practicability of the grinding equipment.

2. The inner wall grinding equipment for automobile VVT driving valve processing can facilitate the partial deformation of the whole grinding body under the action of centrifugal force by surrounding the bending part in the middle of the surface of the grinding body, so that the grinding body can adaptively deform and fit on the inner wall of the automobile VVT driving valve under the action of centrifugal force, so as to achieve the fitting contact and grinding of the inner wall of the automobile VVT driving valve, and can increase the flexible adaptability of the grinding body to the special automobile VVT driving valve with local cavity diameter changes inside, and will not directly cause hard scratches and damage to the inner wall of the automobile VVT driving valve, so as to achieve the flexible grinding operation of the inner wall of the automobile VVT driving valve, and ensure the grinding accuracy and quality of the inner wall of the automobile VVT driving valve.

3. The inner wall grinding equipment for automobile VVT drive valve processing can drive the grinding body to telescopic and rotating movement inside the automobile VVT drive valve through the long screw rod, so that it can not only grind the inner wall of the automobile VVT drive valve, but also reciprocate and grind the inner wall of the automobile VVT drive valve within a specified length and direction along the axial direction of the long screw rod, so that the grinding accuracy of each part of the inner wall of the automobile VVT drive valve can be kept consistent and balanced, eliminating the hidden danger of large deviation of local grinding accuracy, and ensuring the quality of the inner wall grinding operation of the automobile VVT drive valve.

4. The inner wall grinding equipment for automobile VVT drive valve processing utilizes the reciprocating motion path length of the grinding parts and the grinding body to grind inside the automobile VVT drive valve. The grinding motor can control the circumference of the turntable's clockwise and counterclockwise rotation on the base frame, so as to control the effective grinding path length of the inner wall of the automobile VVT drive valve on the axis of the grinding equipment, change the traditional extended grinding in a single direction, eliminate the inconsistency of grinding accuracy, avoid grinding errors, and eliminate the defects of inconsistent grinding accuracy.

5. The inner wall grinding equipment for automobile VVT drive valve processing can convert the connection structure between the straight rod and the short head rod into this flexible bead structure through the design of the bead rod, so that when you want to change the specific position of the meshing lock in the tooth window on the surface of the long sleeve rod through the action of lifting and pressing down, you can use a small bead constituting the bead rod as a unit of extension or contraction to accurately adjust the distance between the grinding body and the rough sleeve rod, so as to accurately control the contact grinding accuracy of the grinding body on the inner wall of the automobile VVT drive valve.

6. The inner wall grinding equipment for automobile VVT drive valve processing, regardless of whether the grinding discs are directly involved in the grinding operation of the inner wall of the automobile VVT drive valve, can use the installation of the two grinding discs inside the automobile VVT drive valve to serve as an effective shielding and protection structure to prevent dust from continuing to spread and pollute other parts of the inner wall. It can effectively prevent the long-distance diffusion of dust generated during grinding and reduce the degree of dust pollution to the inner cavity of the automobile VVT drive valve.

7. The inner wall grinding equipment for automobile VVT drive valve processing has a simple structure, simple operation, high grinding precision, and can meet the processing needs of standard automobile VVT drive valves with different cavity diameters. It can also perform uniform precision grinding on the inner wall within the effective axial length range within unit time, with high efficiency and consistency, and can ensure the quality consistency of each valve in mass production.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front structural schematic diagram of an inner wall grinding device for machining an automobile VVT drive valve according to the present invention;

FIG2 is a schematic diagram of the back structure of an inner wall grinding device for machining an automobile VVT drive valve according to the present invention;

FIG3 is a schematic diagram of a partial assembly structure of a grinding member and a rough sleeve rod according to the present invention;

FIG4 is a schematic diagram of the partial assembly structure of the grinding disc and the rough sleeve rod of the present invention;

FIG5 is a schematic diagram of a partial assembly structure of a thick sleeve rod and a short pipe head according to the present invention;

FIG6 is a schematic diagram of the internal structure of the long sleeve rod of the present invention;

FIG7 is a schematic diagram of a partial assembly structure of a straight rod and a joint rod of the present invention;

FIG8 is a schematic diagram of a partial assembly structure of a straight rod and a long sleeve rod of the present invention;

FIG9 is a schematic diagram of a partial assembly structure of a joint rod and a grinding body according to the present invention;

FIG10 is a schematic diagram of a partial assembly structure of a locking rod and a joint rod of the present invention;

FIG11 is a schematic structural diagram of a locking rod according to the present invention;

FIG12 is a schematic diagram of the assembly structure of the grinding disc and the hoop member of the present invention;

FIG. 13 is a schematic diagram of the assembly structure of the long sleeve and the thick sleeve rod of the present invention.

In the figure: 1, base frame; 2, long screw rod; 3, transmission mechanism; 4, grinding motor; 5, pump; 6, long sleeve; 7, grinding piece; 8, support; 21, long sleeve rod; 23, thick sleeve rod; 24, short tube head; 25, grinding body; 26, straight rod; 27, short head rod; 28, joint rod; 29, locking rod; 211, tooth window; 212, sleeve cavity; 241, corrugated rubber tube; 242, first spring; 2 43. bucket; 251. bending portion; 252. second spring; 261. connecting rod; 262. column; 263. gear head; 264. third spring; 281. fourth spring; 282. spring tongue; 291. latch tooth; 292. notch; 31. turntable; 32. arm; 33. kit; 61. collar; 62. guide cavity; 71. grinding disc; 72. hoop; 73. air hole; 74. perforation.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

In the first embodiment, as shown in FIGS. 1 to 13 , the present invention provides a technical solution: an inner wall grinding device for processing an automobile VVT drive valve, comprising a base frame 1 , on which a long lead screw 2 is rotatably mounted, and the long lead screw 2 is hollow;

The transmission mechanism 3 is used to drive the long screw rod 2 to perform telescopic rotation in the front-to-back direction on the bottom frame 1. The transmission mechanism 3 has a grinding motor 4 that provides driving force, and a pump 5 installed on the left side of the transmission mechanism 3. The pump 5 and the transmission mechanism 3 are installed on both sides of the long screw rod 2 respectively. The transmission mechanism 3 is rotatably installed with the bottom frame 1 through the grinding motor 4. The grinding motor 4 is installed on the top of the bottom frame 1 and close to the side of the transmission mechanism 3. The pump 5 is installed on the left end of the bottom frame 1;

A grinding piece 7 is used for grinding the inner wall of a VVT driving valve of an automobile. The grinding piece 7 has a long sleeve 6 for guiding dust, and a support 8 installed below the grinding piece 7. The long sleeve 6 is fixedly connected to the support 8, and the long sleeve 6 is connected to the pump 5.

Among them, the end of the long screw rod 2 away from the grinding motor 4 is fixedly connected to the long sleeve rod 21, the surface of the long sleeve rod 21 and the end away from the grinding motor 4 is sleeved with a thick sleeve rod 23, the surface of the thick sleeve rod 23 and the end away from the grinding motor 4 is connected with a short tube head 24, the short tube head 24 is connected to the inner cavity of the long sleeve rod 21, and the surface of the thick sleeve rod 23 and the end away from the grinding motor 4 is installed with a grinding body 25, and the grinding body 25 is used to extend and grind the inner wall of the automobile VVT drive valve.

A straight rod 26 is installed in the inner cavity of the long sleeve rod 21, a short head rod 27 is installed at the end of the straight rod 26 away from the grinding motor 4, a joint rod 28 is threadedly connected to the end of the short head rod 27 away from the straight rod 26, a locking rod 29 is inserted inside the joint rod 28, a tooth window 211 is opened through the surface of the long sleeve rod 21, and the tooth window 211 is connected to the inner cavity of the long sleeve rod 21, and a sleeve cavity 212 is left between the long sleeve rod 21 and the thick sleeve rod 23.

One end of the short tube head 24 away from the thick sleeve rod 23 is connected to a corrugated rubber tube 241, and a first spring 242 is installed around the corrugated rubber tube 241, and one end of the first spring 242 is connected to the short tube head 24, and the other end of the first spring 242 is connected to a bucket 243, and the bucket 243 is elastically installed with the short tube head 24 through the first spring 242. The grinding body 25 is overall oblate, and a bending portion 251 is installed in the middle of the surface of the grinding body 25, and the bending portion 251 can be bent and deformed. A second spring 252 is connected to the middle position inside the grinding body 25, and the second spring 252 is used to rebound the deformed bending portion 251 to its initial shape.

One end of the straight rod 26 away from the ball rod 261 is connected to the third spring 264 , and one end of the third spring 264 away from the straight rod 26 is connected to the inner wall of the long sleeve rod 21 . The straight rod 26 is elastically mounted with the long sleeve rod 21 through the third spring 264 .

A fourth spring 281 is connected to one end of the joint rod 28 in the middle of the inner side and close to the short head rod 27 . Two pairs of spring tongues 282 are installed in a centrally symmetrical manner inside the joint rod 28 , and the spring tongues 282 are installed on the surface of the joint rod 28 to be elastically telescopic.

A pair of latch teeth 291 are fixedly installed at one end of the locking rod 29 close to the fourth spring 281, and a notch 292 is left between the latch teeth 291. The spring tongue 282 is locked and installed with the locking rod 29 through the latch teeth 291, and the notch 292 corresponds to the spring tongue 282. The locking rod 29 is installed with the joint rod 28 by the latch teeth 291, the spring tongue 282 and the fourth spring 281, and the joint rod 28 is installed with the grinding body 25 by the spring tongue 282 and the locking rod 29.

The transmission mechanism 3 includes a turntable 31 rotatably mounted on the top of the base frame 1, and a pair of arm rods 32 are centrally symmetrically mounted on one side of the turntable 31 facing away from the grinding motor 4. A kit 33 is installed at one end of the arm rod 32 close to the long lead screw 2. The kit 33 is threadedly mounted on the long lead screw 2, and the arm rod 32 and the kit 33 are rotatably mounted.

The grinding piece 7 includes a pair of grinding discs 71, which are sleeved on the coarse sleeve rod 23 and away from one end of the long sleeve rod 21. Hoop rings 72 are symmetrically installed on both sides of the grinding discs 71. The hoop rings 72 are bolted to the grinding discs 71, and the hoop rings 72 are bolted to the coarse sleeve rod 23. An air hole 73 is opened on the surface of the grinding disc 71, and a through hole 74 is opened inside the grinding disc 71 to penetrate the coarse sleeve rod 23. The air hole 73 is connected to the sleeve cavity 212 through the through hole 74.

When in use, the grinding piece 7 is inserted into the interior of the automobile VVT drive valve, and then the grinding motor 4 and the pump 5 are activated at the same time. The grinding motor 4 drives the transmission mechanism 3 to rotate around the output end of the grinding motor 4, so that the turntable 31 performs a reciprocating rotation motion of clockwise and counterclockwise cycles on the base frame 1. With the help of the sleeve 33 and the threaded twisting push of the long lead screw 2, the long lead screw 2 can perform a telescopic rotation motion along the axial direction of the long lead screw 2 under the dual axial guidance of the base frame 1 and the long sleeve 6 at the top of the pillar 8, so as to drive the grinding body 25 to fit on the inner wall of the drive valve and rotate and grind at the same time.

During the grinding process, the grinding piece 7 and the grinding body 25 can be used and retracted according to the specific size of the inner diameter of the automobile VVT drive valve:

When the inner diameter of the automobile VVT driving valve is the same as the outer diameter of the grinding disc 71, at this time, by pulling out the locking rod 29 from the inside of the joint rod 28, the grinding body 25 that is limitedly locked on the joint rod 28 can be removed, and then the locking rod 29 is reinserted into the joint rod 28, and the spring tongue 282 pushed out of the surface of the joint rod 28 by the locking rod 29 is used as a limiting shielding structure to completely retract the bead rod 261 into the bucket 243; then lift up the gear head 263, and press the column 262 with your fingers along the direction of the straight rod 26 to retract the straight rod toward the direction of the long wire rod 2. 26, and then the gear head 263 is embedded in the tooth window 211, and re-engaged and locked with the long sleeve rod 21, so as to pull back the connecting rod 261, so that during the straight rod 26 pulls the connecting rod 261 back into the long sleeve rod 21, the first spring 242 can be squeezed by the bucket 243, and the bucket 243 is stored between the two grinding discs 71, so that the two grinding discs 71 are the only structural components on the surface of the rough sleeve rod 23 at this moment that contact and grind the inner wall of the automobile VVT drive valve, thereby realizing the targeted grinding of the inner wall of the automobile VVT drive valve of this size.

When the inner diameter of the automobile VVT drive valve is larger than the outer diameter of the grinding disc 71, at this time, it can be used as described above: insert the grinding piece 7 together with the grinding body 25 into the automobile VVT drive valve, and then rotate the grinding body 25 around the long sleeve rod 21 to a position where the axis of the grinding body 25 is perpendicular to the plane of the working platform, and then release the ball rod 261 until the side of the grinding body 25 away from the short tube head 24 contacts the inner wall, and then re-engage the gear head 263 in the tooth window 211 to position and lock the length of the extended ball rod 261, and then, driven by the rotation of the long screw rod 2, the inner wall of the automobile VVT drive valve can be fitted and rotated and polished with the aid of the grinding body 25.

When the inner diameter of the automobile VVT driving valve is smaller than the outer diameter of the grinding disc 71 and larger than the outer diameter of the rough sleeve rod 23, the inner wall of the automobile VVT driving valve can be polished by removing the grinding disc 71 and replacing it with a grinding disc 71 of corresponding diameter.

Through the above operation, adaptive grinding of the inner wall of automobile VVT drive valves of various different inner diameter models can be achieved, and the effective movable distance of the grinding body 25 away from the short tube head 24 can be expanded by releasing the ball rod 261 at one end in advance, so as to adapt to the working condition of local diameter expansion of the inner cavity of some automobile VVT drive valves. This special variable diameter inner cavity can be adaptively ground, which expands the use conditions of the grinding equipment, improves the types of automobile VVT drive valves that the grinding equipment can correspond to, and improves the practicability of the grinding equipment.

By surrounding the bending portion 251 in the middle of the surface of the grinding body 25, it is convenient for the grinding body 25 as a whole to be partially deformed under the action of centrifugal force, so that the grinding body 25 can adaptively deform and fit on the inner wall of the automobile VVT drive valve under the action of centrifugal force, so as to achieve fitting contact and grinding of the inner wall of the automobile VVT drive valve, and can increase the flexible adaptability of the grinding body 25 to special automobile VVT drive valves with local cavity diameter changes inside, without directly causing hard scratches and damage to the inner wall of the automobile VVT drive valve, so as to achieve flexible grinding operation on the inner wall of the automobile VVT drive valve, and ensure the grinding accuracy and quality of the inner wall of the automobile VVT drive valve.

The long lead screw 2 drives the grinding body 25 to move telescopically and rotationally inside the automobile VVT driving valve, so that the inner wall of the automobile VVT driving valve can be ground, and the inner wall of the automobile VVT driving valve can be reciprocated and ground within a specified length direction along the axial direction of the long lead screw 2, so that the grinding accuracy of each part of the inner wall of the automobile VVT driving valve can be kept consistent and balanced, eliminating the hidden danger of large local grinding accuracy deviation, and ensuring the quality of the grinding operation of the inner wall of the automobile VVT driving valve.

Specifically, by utilizing the reciprocating motion path length of the grinding piece 7 and the grinding body 25 for grinding inside the automobile VVT drive valve, the grinding motor 4 can be used to control the clockwise and counterclockwise rotation circumference of the turntable 31 on the base frame 1, thereby controlling the effective grinding path length of the inner wall of the automobile VVT drive valve on the axis of the grinding equipment, changing the traditional extended grinding in a single direction, eliminating the inconsistency of grinding accuracy, avoiding grinding errors, eliminating the defects of inconsistent grinding accuracy, and improving the finish.

Through the above operations, it can be known that the grinding equipment has a simple structure, simple operation, and high grinding precision. At the same time, it can meet the processing requirements of standard automobile VVT drive valves with different cavity diameters, and can perform uniform precision grinding on the inner wall within the effective axial length range within unit time. It has high efficiency and high consistency, and can ensure the quality consistency of each valve in mass production.

The second embodiment is based on the first embodiment, please refer to Figures 6 and 7, a ball connecting rod 261 is connected between the straight rod 26 and the short head rod 27, and the ball connecting rod 261 is slidably installed with the bucket 243 through the short tube head 24, the corrugated rubber tube 241 and the first spring 242. A column 262 is fixedly connected to the surface of the straight rod 26 and one end away from the ball connecting rod 261. A gear head 263 is installed in the middle of the top of the column 262, and the gear head 263 is elastically connected to the column 262, and the gear head 263 is meshed with the long sleeve rod 21 through the tooth window 211.

Through the design of the bead rod 261, the connection structure between the straight rod 26 and the short head rod 27 can be converted into this flexible bead structure, so that when one wants to subsequently change the specific position of the engagement lock in the tooth window 211 on the surface of the long sleeve rod 21 by lifting and pressing down, the distance between the grinding body 25 and the rough sleeve rod 23 can be accurately adjusted with a small bead constituting the bead rod 261 as a unit of extension or contraction, so as to accurately control the contact grinding accuracy of the grinding body 25 on the inner wall of the automobile VVT drive valve.

The third embodiment is based on the first and second embodiments, as shown in FIG13 , a collar 61 is embedded in the inner side of the long sleeve 6, the long sleeve 6 is slidably installed with the long sleeve rod 21 through the collar 61, the long sleeve 6 is slidably installed with the thick sleeve rod 23 through the collar 61, a guide cavity 62 is opened around the inner side of the long sleeve 6, and the guide cavity 62 is connected with the pump 5 through the long sleeve 6.

During the grinding process, regardless of whether the grinding discs 71 are directly involved in the grinding operation of the inner wall of the automobile VVT drive valve, the installation of the two grinding discs 71 inside the automobile VVT drive valve can be used as an effective shielding and protection structure to prevent dust from continuing to spread and pollute other parts of the inner wall. This can effectively prevent the long-distance diffusion of dust generated during grinding and reduce the degree of dust pollution to the inner cavity of the automobile VVT drive valve.

At the same time, when the pump 5 is activated, the generated dust can be timely adsorbed and collected into the sleeve cavity 212 by means of the communication between the air holes 73 and the perforations 74 opened on the surface of the grinding disc 71 and the sleeve cavity 212, and the dust can be pushed continuously by the suction force so that the dust can be finally collected into the dust storage container of the pump 5 through the guide cavity 62 opened inside the collar 61, so that the grinding equipment can grind the inner wall of the automobile VVT drive valve while realizing the real-time dust collection function, and there is no need to clean the inner cavity of the automobile VVT drive valve separately later, which saves the processing time of the automobile VVT drive valve and improves the grinding operation efficiency.

Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims (10)

1. Inner wall polishing equipment for machining of automobile VVT driving valve comprises a baseplate frame (1), and is characterized in that: a long screw rod (2) is rotatably arranged on the baseplate frame (1), and the long screw rod (2) is hollow;

The transmission mechanism (3) is used for driving the long screw rod (2) to stretch and rotate on the baseplate frame (1) in the front-rear direction, the transmission mechanism (3) is provided with a polishing motor (4) for providing driving force, and a pump (5) arranged on the left side of the transmission mechanism (3), the pump (5) and the transmission mechanism (3) are respectively arranged on two sides of the long screw rod (2), the transmission mechanism (3) is rotatably arranged with the baseplate frame (1) through the polishing motor (4), the polishing motor (4) is arranged on the top of the baseplate frame (1) and is close to one side of the transmission mechanism (3), and the pump (5) is arranged on the left end of the baseplate frame (1);

The polishing piece (7) is used for polishing the inner wall of the automobile VVT driving valve, the polishing piece (7) is provided with a long sleeve (6) for guiding dust, and a support post (8) arranged below the polishing piece (7), the long sleeve (6) is fixedly connected with the support post (8), and the long sleeve (6) is communicated with the pump (5);

The long-filament rod (2) is far away from one end fixedly connected with long sleeve rod (21) of motor (4) of polishing, the one end cover that motor (4) was polished in long sleeve rod (21) surface and was kept away from is equipped with thick sleeve rod (23), the one end that motor (4) was polished in thick sleeve rod (23) surface and was kept away from is connected with nozzle stub (24), nozzle stub (24) are linked together with long sleeve rod (21) inner chamber, thick sleeve rod (23) surface and the one end that motor (4) was polished in keeping away from are installed and are polished body (25), and body (25) of polishing are used for extending the polishing to car VVT drive valve inner wall.

2. The inner wall polishing device for machining an automobile VVT driving valve according to claim 1, wherein: install straight-bar (26) in long cover pole (21) inner chamber, short head pole (27) are installed to the one end that grinding motor (4) was kept away from to straight-bar (26), the one end threaded connection that straight-bar (26) was kept away from to short head pole (27) has joint pole (28), inside cartridge of joint pole (28) has locking lever (29), tooth window (211) have been seted up in long cover pole (21) surface run through, and tooth window (211) are linked together with long cover pole (21) inner chamber, leave between long cover pole (21) and thick cover pole (23) sleeve pipe chamber (212).

3. The inner wall polishing device for machining an automobile VVT driving valve according to claim 2, wherein: the utility model discloses a polishing body, including nozzle stub (24), thick loop bar (23) and polishing body (25), nozzle stub (24) are kept away from one end of thick loop bar (23) and are connected with ripple rubber tube (241), install first spring (242) around ripple rubber tube (241), and one end of first spring (242) is connected on nozzle stub (24), the other end of first spring (242) is connected with fight piece (243), fight piece (243) are installed through first spring (242) and nozzle stub (24) spring, the whole oblate that is of polishing body (25), just the surface mid-mounting of polishing body (25) has kink (251), the inside intermediate position of polishing body (25) is connected with second spring (252).

4. The inner wall polishing device for machining an automobile VVT driving valve according to claim 3, wherein: the utility model discloses a ball connecting rod is characterized in that a ball connecting rod (261) is connected between a straight rod (26) and a short head rod (27), the ball connecting rod (261) is matched with a bucket (243) through a short tube head (24), a corrugated rubber tube (241) and a first spring (242), an upright post (262) is fixedly connected with the surface of the straight rod (26) and one end far away from the ball connecting rod (261), a gear head (263) is arranged in the middle of the top of the upright post (262), the gear head (263) is elastically connected with the upright post (262), and the gear head (263) is meshed with a long sleeve rod (21) through a tooth window (211).

5. The inner wall polishing device for machining an automobile VVT driving valve according to claim 4, wherein: one end of the straight rod (26) far away from the bead connecting rod (261) is connected with a third spring (264), one end of the third spring (264) far away from the straight rod (26) is connected to the inner wall of the long sleeve rod (21), and the straight rod (26) is mounted in a bouncing way with the long sleeve rod (21) through the third spring (264).

6. The inner wall polishing device for machining an automobile VVT driving valve according to claim 5, wherein: the middle part of the inner side of the joint rod (28) and one end close to the short head rod (27) are connected with a fourth spring (281), two pairs of elastic tongues (282) are symmetrically arranged in the joint rod (28) in a central mode, and the elastic tongues (282) are elastically and telescopically arranged on the surface of the joint rod (28).

7. The inner wall polishing device for machining an automobile VVT driving valve according to claim 6, wherein: one end of locking lever (29) is close to fourth spring (281) fixed mounting has a pair of latch (291), leave breach (292) between latch (291), latch (282) are through latch (291) and locking lever (29) locking installation, breach (292) are corresponding cooperation with latch (282), latch (29) are through latch (291) and latch (282) and fourth spring (281) cooperation and are connected pole (28) bolt installation, connect pole (28) through latch (282) and locking lever (29) cooperation and grinding body (25) bolt installation.

8. The inner wall polishing device for machining an automobile VVT driving valve according to claim 7, wherein: the transmission mechanism (3) comprises a rotary table (31) rotatably mounted at the top of the baseplate frame (1), a pair of arm rods (32) are mounted on one surface, deviating from the polishing motor (4), of the rotary table (31) in a central symmetry mode, a sleeve member (33) is mounted at one end, close to the long screw rod (2), of each arm rod (32), the sleeve member (33) is in threaded mounting with the long screw rod (2), and the arm rods (32) are in rotary mounting with the sleeve member (33).

9. The inner wall polishing device for machining an automobile VVT driving valve according to claim 8, wherein: the novel long sleeve is characterized in that a sleeve ring (61) is mounted on the inner side of the long sleeve (6) in a jogged mode, the long sleeve (6) is slidably mounted with the long sleeve rod (21) through the sleeve ring (61), the long sleeve (6) is slidably mounted with the thick sleeve rod (23) through the sleeve ring (61), a guide cavity (62) is formed in the inner side of the long sleeve (6) in a surrounding mode, and the guide cavity (62) is communicated with the pump (5) through the long sleeve (6).

10. The inner wall polishing device for machining an automobile VVT driving valve according to claim 9, wherein: the polishing piece (7) comprises a pair of polishing discs (71), wherein the pair of polishing discs (71) are sleeved on a thick loop bar (23) and far away from one end of a long loop bar (21), hoop members (72) are symmetrically arranged on two sides of each polishing disc (71), each hoop member (72) is mounted with each polishing disc (71) through bolts, each hoop member (72) is mounted with the corresponding thick loop bar (23) through bolts, air holes (73) are formed in the surfaces of the polishing discs (71), through holes (74) are formed in the polishing discs (71) and penetrate through the thick loop bar (23), and the air holes (73) are communicated with a sleeve cavity (212) through the through holes (74).